LSB BANCSHARES INC /NC/
S-4/A, 1997-07-01
STATE COMMERCIAL BANKS
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<PAGE>   1

   
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 1, 1997
    
                                                 REGISTRATION NO. 333-27021

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549
   
                           AMENDMENT NO. 2 TO FORM S-4
    
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                        --------------------------------

                              LSB BANCSHARES, INC.
             (Exact Name of Registrant as Specified in its Charter)

                        --------------------------------

     NORTH CAROLINA                           6712                56-1348147
(State or Other Jurisdiction of  (Primary Standard Industrial  (I.R.S. Employer 
Incorporation or Organization)   Classification Code Number) Identification No.)

                                  ONE LSB PLAZA
                         LEXINGTON, NORTH CAROLINA 27292
                                 (910) 248-6500
               (Address, Including Zip Code, and Telephone Number,
        Including Area Code, of Registrant's Principal Executive Offices)

                                 ROBERT F. LOWE
                      PRESIDENT AND CHIEF EXECUTIVE OFFICER
                              LSB BANCSHARES, INC.
                                  ONE LSB PLAZA
                         LEXINGTON, NORTH CAROLINA 27292
                                 (910) 248-6500
            (Name, Address, Including Zip Code, and Telephone Number,
                   Including Area Code, of Agent For Service)

                                   Copies to:

         DAVID E. JOHNSTON                          JOHN W. BABCOCK
         HUNTON & WILLIAMS                      BELL, DAVIS & PITT, P.A.
 ONE NATIONSBANK PLAZA, SUITE 2650               635 WEST FOURTH STREET
       101 SOUTH TRYON STREET             WINSTON-SALEM, NORTH CAROLINA 27101
  CHARLOTTE, NORTH CAROLINA 28280                    (910) 722-3700
           (704) 378-4700


         Approximate date of commencement of proposed sale of the securities to
the public: As soon as practicable after this Registration Statement becomes
effective and all other conditions to the proposed merger (the "Merger")
described herein have been satisfied or waived.

         If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]

<PAGE>   2




THIS REGISTRATION STATEMENT COVERS ADDITIONAL SHARES OF THE COMMON STOCK OF THE
REGISTRANT THAT MAY BE ISSUED TO PREVENT DILUTION RESULTING FROM A STOCK SPLIT,
STOCK DIVIDEND OR SIMILAR TRANSACTION INVOLVING THE COMMON STOCK OF THE
REGISTRANT, PURSUANT TO RULE 416.

THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE TIME UNTIL THE REGISTRANT SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.


<PAGE>   3
                             LSB BANCSHARES, INC.

   CROSS REFERENCE SHEET PURSUANT TO ITEM 501(B) OF REGULATION  S-K SHOWING
    THE LOCATION IN THE JOINT PROXY STATEMENT-PROSPECTUS OF THE RESPONSES
                      TO THE ITEMS OF PART I OF FORM S-4


<TABLE>
<CAPTION>
ITEM                                                                   CAPTION OR LOCATION IN PROXY
NUMBER                             CAPTION                                STATEMENT-PROSPECTUS
- ------                             -------                               --------------------
<S>            <C>                                              <C>
A.             INFORMATION ABOUT THE TRANSACTION

1.             Forepart of Registration Statement and Outside
               Front Cover Page of Prospectus.................  Outside Front Cover of Joint Proxy Statement;  
                                                                Facing Page of Registration Statement
2.             Inside Front and Outside Back Cover of
               Prospectus ..................................... Available Information; Documents Incorporated
                                                                by  Reference; Table of Contents

3.             Risk Factors, Ratio of Earnings to Fixed
               Charges and Other Information..................  Summary; Comparative Market Prices and 
                                                                Dividends; Comparative Per Share Data

4.             Terms of the Transaction.......................  Summary; Description of the Merger; Effect
                                                                of the Merger on Rights of Shareholders;  
                                                                Description of LSB Capital Stock

5.             Pro Forma Financial Information..............    Documents  Incorporated by Reference;  Pro 
                                                                Forma Condensed Financial Information

6.             Material Contracts with Company Being 
               Acquired.....................................    Summary; Description of the Merger

7.             Additional Information Required for Reoffering
               by Persons and Parties Deemed to be
               Underwriters...................................  Not applicable

8.             Interest of Named Experts and Counsel..........  Opinions

9.             Disclosure of Commission Position on
               Indemnification for Securities Act 
               Liabilities....................................  Not applicable

B.             INFORMATION ABOUT THE REGISTRANT

10.            Information with Respect to S-3 Registrants....  Available Information; Documents    
                                                                Incorporated by Reference; Summary; 
                                                                Information About LSB

11.            Incorporation of Certain Information by
               Reference......................................  Documents Incorporated by Reference
</TABLE>


<PAGE>   4

<TABLE>
<CAPTION>
ITEM                                                                   CAPTION OR LOCATION IN PROXY
NUMBER                             CAPTION                                STATEMENT-PROSPECTUS
- ------                             -------                               --------------------
<S>            <C>                                              <C>
12.            Information with Respect to S-2 or S-3
               Registrants....................................  Not Applicable

13.            Incorporation of Certain Information by
               Reference......................................  Not Applicable

14.            Information  with Respect to Registrants  Other
               Than S-2 or S-3 Registrants....................  Not Applicable

C.             INFORMATION ABOUT THE COMPANY BEING ACQUIRED

15.            Information with Respect to S-3 Companies......  Not Applicable

16.            Information with Respect to S-2 or S-3
               Companies......................................  Available Information; Documents   
                                                                Incorporated by Reference; Summary; 
                                                                Information About ONSB

17.            Information with Respect to Companies Other
               Than S-2 or S-3 Companies......................  Not Applicable

D.             VOTING AND MANAGEMENT INFORMATION

18.            Information if Proxies, Consents, or
               Authorizations are to be Solicited.............  Documents Incorporated by Reference;  
                                                                Summary; Special Meeting of ONSB  
                                                                Shareholders; Special Meeting of LSB
                                                                Shareholders; Description of the Merger;  
                                                                Information About ONSB; Information 
                                                                About LSB; Description of LSB Capital Stock

19.            Information if Proxies, Consents, or
               Authorizations are not to be Solicited or in
               an Exchange Offer..............................  Not Applicable
</TABLE>



<PAGE>   5


                              OLD NORTH STATE BANK
                            161 SOUTH STRATFORD ROAD
                       WINSTON-SALEM, NORTH CAROLINA 27104

   
                                 July 1, 1997
    


To the Shareholders of
Old North State Bank:

   
       You are cordially invited to attend a Special Meeting of the Shareholders
(the "Special Meeting") of Old North State Bank to be held at the Holiday Inn
Select, 5790 University Parkway, Winston-Salem, North Carolina, at 9:00 A.M.,
local time, on Friday, August 1, 1997, notice of which is enclosed.
    

       At the Special Meeting, you will be asked to consider and vote on a
proposal to approve an Agreement and Plan of Reorganization and Merger, dated as
of March 14, 1997 (the "Agreement"), which provides for the merger (the
"Merger") of Old North State Bank with and into Lexington State Bank ("LSB
Bank"), with LSB Bank the surviving corporation resulting from the Merger. LSB
Bank is a wholly-owned subsidiary of LSB Bancshares, Inc. ("LSB"). Upon
consummation of the Merger, each share of Old North State Bank common stock
issued and outstanding will be exchanged for 0.948 of a share of LSB common
stock (subject to adjustment as described in the accompanying Joint Proxy
Statement/Prospectus), with cash being paid in lieu of issuing fractional
shares.

       Enclosed are the (i) Notice of Special Meeting, (ii) Joint Proxy
Statement/Prospectus, (iii) Proxy for the Special Meeting, (iv) Old North State
Bank's Annual Report on Form 10-KSB for the year ended December 31, 1996, and
(v) Old North State Bank's Quarterly Report on Form 10-QSB for the three months
ended March 31, 1997. The Joint Proxy Statement/Prospectus describes in more
detail the Agreement and the proposed Merger, including a description of the
conditions to consummation of the Merger and the effects of the Merger on the
rights of Old North State Bank shareholders. Please read these materials
carefully and consider thoughtfully the information set forth in them.

       The Board of Directors has approved the Agreement and consummation of the
Merger contemplated thereby, and recommends that you vote FOR approval of the
Agreement.

       It is important to understand that approval of the Agreement will require
the affirmative vote of two-thirds of the votes entitled to be cast at the
Special Meeting by the holders of the issued and outstanding shares of Old North
State Bank common stock. Accordingly, whether or not you plan to attend the
Special Meeting, you are urged to complete, sign, and return promptly the
enclosed proxy card. If you attend the Special Meeting, you may vote in person
if you wish, even if you previously have returned your proxy card. The proposed
Merger with LSB Bank is a significant step for Old North State Bank and your
vote on this matter is of great importance.

       On behalf of the Board of Directors, we urge you to vote FOR approval of
the Agreement by marking the enclosed proxy card "FOR" item one.

       We look forward to seeing you at the Special Meeting.

                              Sincerely,




        Nicholas A. Daves                 Robert E. Marziano
        Chairman of the Board             President and Chief Executive Officer


<PAGE>   6



                             OLD NORTH STATE BANK
                           161 SOUTH STRATFORD ROAD
                     WINSTON-SALEM, NORTH CAROLINA 27104
                                (910) 631-3900

   
                =============================================
                  NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                  TO BE HELD AT 9:00 A.M. ON AUGUST 1, 1997
                =============================================
    



To the Shareholders of
Old North State Bank:

   
       NOTICE IS HEREBY GIVEN that a special meeting of the shareholders (the
"Special Meeting") of Old North State Bank will be held at the Holiday Inn
Select, 5790 University Parkway, Winston-Salem, North Carolina, on Friday, 
August 1, 1997, at 9:00 A.M., local time, for the following purposes:
    

       1. MERGER. To consider and vote upon a proposal to approve an Agreement
and Plan of Reorganization and Merger, dated as of March 14, 1997 (the
"Agreement"), by and among Old North State Bank, Lexington State Bank ("LSB
Bank") and LSB Bancshares, Inc., the holding company of LSB Bank ("LSB"),
pursuant to which (i) Old North State Bank will merge (the "Merger") with and
into LSB Bank, with LSB Bank the surviving corporation, (ii) each share of the
$5.00 par value common stock of Old North State Bank ("Old North State Bank
Stock") issued and outstanding at the effective time of the Merger will be
exchanged for 0.948 of a share of the $5.00 par value common stock of LSB,
subject to possible adjustment, and cash in lieu of any fractional share, and
(iii) LSB will assume the obligations of Old North State Bank under certain
warrants and various stock plans and adopt substitute plans where appropriate,
all as more fully described in the accompanying Joint Proxy
Statement/Prospectus. A copy of the Agreement is set forth in Appendix A to the
accompanying Joint Proxy Statement/Prospectus and is hereby incorporated by
reference herein.

       2. OTHER BUSINESS. To transact such other business as may come properly
before the Special Meeting or any adjournments or postponements of the Special
Meeting.

       NOTICE OF DISSENTER RIGHTS. If Proposal 1 above is approved and the
Merger contemplated thereby is consummated, each holder of shares of Old North
State Bank Stock who (i) gives notice prior to the vote on the proposal of his
intent to demand appraisal rights and (ii) does not vote in favor of the
proposal would have the right to demand appraisal of such holder's shares of Old
North State Bank Stock and would be entitled to the rights and remedies of
Article 13 of the North Carolina Business Corporation Act ("NCBCA"). The right
of any such shareholder to any such rights and remedies is contingent upon
consummation of the Merger. In addition, the right of any such shareholder to
such rights and remedies is contingent upon strict compliance with the
requirements set forth in Article 13 of the NCBCA, the full text of which is
attached as Appendix B to the accompanying Joint Proxy Statement/Prospectus. For
a summary of the requirements of Article 13 of the NCBCA, see "DESCRIPTION OF
THE MERGER--Dissenters' Rights" in the accompanying Joint Proxy
Statement/Prospectus.

   
       Only shareholders of record at the close of business on June 26, 1997,
will be entitled to receive notice of and to vote at the Special Meeting or any
adjournment or postponement thereof. Approval of
    



<PAGE>   7

the Agreement requires the affirmative vote of two-thirds of the votes entitled
to be cast at the Special Meeting by holders of the issued and outstanding
shares of Old North State Bank Stock.

       THE BOARD OF DIRECTORS OF OLD NORTH STATE BANK RECOMMENDS THAT
SHAREHOLDERS VOTE FOR APPROVAL OF THE AGREEMENT.

                                            BY ORDER OF THE BOARD OF DIRECTORS




                                            Nicholas A. Daves
                                            Chairman


   
Winston-Salem, North Carolina
July 1, 1997
    

       WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING, PLEASE COMPLETE,
DATE, AND SIGN THE ENCLOSED FORM OF PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED
POSTAGE PAID RETURN ENVELOPE IN ORDER TO ENSURE THAT YOUR SHARES WILL BE
REPRESENTED AT THE SPECIAL MEETING.



<PAGE>   8


                             LSB BANCSHARES, INC.
                                ONE LSB PLAZA
                       LEXINGTON, NORTH CAROLINA 27292

   
                                 July 1, 1997
    

To the Shareholders of
LSB Bancshares, Inc.:

   
       You are cordially invited to attend a Special Meeting of the Shareholders
(the "Special Meeting") of LSB Bancshares, Inc. ("LSB") to be held at the
offices of LSB at One LSB Plaza, Lexington, North Carolina, at 1:00 P.M., local
time, on Friday, August 1, 1997, notice of which is enclosed.
    

       At the Special Meeting, you will be asked to consider and vote on a
proposal to issue shares of LSB common stock, $5.00 par value per share ("LSB
Stock"), pursuant to the terms of an Agreement and Plan of Reorganization and
Merger, dated as of March 14, 1997 (the "Agreement"), which provides for the
merger (the "Merger") of Old North State Bank with and into Lexington State Bank
("LSB Bank"), with LSB Bank the surviving corporation resulting from the Merger.
Upon consummation of the Merger, each share of Old North State Bank common stock
issued and outstanding will be exchanged for 0.948 of a share of LSB Stock
(subject to adjustment as described in the accompanying Joint Proxy
Statement/Prospectus), with cash being paid in lieu of issuing fractional
shares.

       Enclosed are the (i) Notice of Special Meeting, (ii) Joint Proxy
Statement/Prospectus, and (iii) Proxy for the Special Meeting. The Joint Proxy
Statement/Prospectus describes in more detail the Agreement and the proposed
Merger, including a description of the conditions to consummation of the Merger.
Please read these materials carefully and consider thoughtfully the information
set forth in them.

       The Board of Directors has approved the Agreement, consummation of the
Merger contemplated thereby, and the related issuance of shares of LSB Stock,
and recommends that you vote FOR approval of the issuance of LSB Stock in
connection with the Merger.

       Approval of the issuance of LSB Stock will require the affirmative vote
of a majority of the total votes cast on the proposal in person or by proxy at
the Special Meeting. Whether or not you plan to attend the Special Meeting, you
are urged to complete, sign, and return promptly the enclosed proxy card. If you
attend the Special Meeting, you may vote in person if you wish, even if you
previously have returned your proxy card. The proposed Merger with Old North
State Bank is a significant step for LSB and your vote on this matter is of
great importance.

       On behalf of the Board of Directors, we urge you to vote FOR approval of
the issuance of shares of LSB Stock in connection with the Merger by marking the
enclosed proxy card "FOR" item one.

       We look forward to seeing you at the Special Meeting.

                              Sincerely,


                              Robert F. Lowe
                              Chairman, President and Chief Executive Officer


<PAGE>   9


                             LSB BANCSHARES, INC.
                                ONE LSB PLAZA
                       LEXINGTON, NORTH CAROLINA 27292
                                (910) 248-6500


   
                =============================================

                  NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                  TO BE HELD AT 1:00 P.M. ON AUGUST 1, 1997

                =============================================
    


To the Shareholders of
LSB Bancshares, Inc.:

   
       NOTICE IS HEREBY GIVEN that a special meeting of the shareholders (the
"Special Meeting") of LSB Bancshares, Inc. ("LSB") will be held at the offices
of LSB at One LSB Plaza, Lexington, North Carolina, on Friday, August 1, 1997, 
at 1:00 P.M., local time, for the following purposes:
    

       1. PROPOSED ISSUANCE OF COMMON STOCK. To consider and vote upon a
proposal to issue shares of LSB common stock, $5.00 par value per share ("LSB
Stock"), pursuant to the terms of an Agreement and Plan of Reorganization and
Merger, dated as of March 14, 1997 (the "Agreement"), by and among Old North
State Bank, Lexington State Bank ("LSB Bank") and LSB, pursuant to which (i) Old
North State Bank will merge (the "Merger") with and into LSB Bank, with LSB Bank
the surviving corporation, (ii) each share of the $5.00 par value common stock
of Old North State Bank ("Old North State Bank Stock") issued and outstanding at
the effective time of the Merger will be exchanged for 0.948 of a share of LSB
Stock, subject to possible adjustment, and cash in lieu of any fractional share,
and (iii) LSB will assume the obligations of Old North State Bank under certain
warrants and various stock plans and adopt substitute plans where appropriate,
all as more fully described in the accompanying Joint Proxy
Statement/Prospectus. A copy of the Agreement is set forth in Appendix A to the
accompanying Joint Proxy Statement/Prospectus and is hereby incorporated by
reference herein.

       2. OTHER BUSINESS. To transact such other business as may come properly
before the Special Meeting or any adjournments or postponements of the Special
Meeting.

       Only shareholders of record at the close of business on June 17, 1997,
will be entitled to receive notice of and to vote at the Special Meeting or any
adjournment or postponement thereof. Approval of the issuance of LSB Stock in
connection with the Merger requires the affirmative vote of a majority of the
total votes cast on the proposal in person or by proxy at the Special Meeting.


<PAGE>   10

       THE BOARD OF DIRECTORS OF LSB RECOMMENDS THAT SHAREHOLDERS VOTE FOR
APPROVAL OF THE ISSUANCE OF SHARES OF LSB STOCK IN CONNECTION WITH THE MERGER.

                                            BY ORDER OF THE BOARD OF DIRECTORS




                                            Robert F. Lowe
                                            Chairman


   
Lexington, North Carolina
July 1, 1997
    

       WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING, PLEASE COMPLETE,
DATE, AND SIGN THE ENCLOSED FORM OF PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED
POSTAGE PAID RETURN ENVELOPE IN ORDER TO ENSURE THAT YOUR SHARES WILL BE
REPRESENTED AT THE SPECIAL MEETING.



<PAGE>   11






                                   PROSPECTUS

                              LSB BANCSHARES, INC.
                        AN ESTIMATED 1,826,350 SHARES OF
                     COMMON STOCK, $5.00 PAR VALUE PER SHARE

                              JOINT PROXY STATEMENT

                     FOR SPECIAL MEETINGS OF SHAREHOLDERS OF
                  OLD NORTH STATE BANK AND LSB BANCSHARES, INC.

       This Prospectus of LSB Bancshares, Inc., a bank holding company organized
and existing under the laws of the State of North Carolina ("LSB"), relates to
up to 1,826,350 shares of common stock, $5.00 par value per share, of LSB ("LSB
Stock"), including shares to be subject to assumed options and warrants, which
are issuable to the shareholders of Old North State Bank ("ONSB"), a bank
corporation organized and existing under the laws of the State of North
Carolina, upon consummation of the proposed merger (the "Merger") described
herein by which ONSB will merge with and into Lexington State Bank ("LSB Bank"),
a bank corporation organized and existing under the laws of the State of North
Carolina and a wholly-owned subsidiary of LSB, pursuant to the terms of the
Agreement and Plan of Reorganization and Merger, dated as of March 14, 1997 (the
"Agreement"), by and among ONSB, LSB Bank and LSB. The full text of the
Agreement is attached as Appendix A hereto.

       At the effective time of the Merger (the "Effective Time"), except as
described herein, each issued and outstanding share of common stock, par value
$5.00 per share, of ONSB ("ONSB Stock") will be converted into and exchanged for
0.948 of a share of LSB Stock (the "Exchange Rate"), assuming an Average Closing
Price (as defined herein) of LSB Stock of $20.00 per share. This would yield a
dollar value of LSB Stock received by ONSB shareholders of $18.96 per share of
ONSB Stock. The Exchange Rate could be greater or less than 0.948, depending
upon the Average Closing Price. To the extent that the Average Closing Price of
LSB Stock is between $20.00 and $24.00, the Exchange Rate shall be adjusted so
that the dollar value of LSB Stock received by the shareholders of ONSB will
range from $18.96 to $19.59, respectively, per share of ONSB Stock. To the
extent that the Average Closing Price of LSB Stock is between $15.00 and $20.00,
the Exchange Rate shall be adjusted so that the dollar value of LSB Stock
received by the shareholders of ONSB will range from $15.80 to $18.96,
respectively, per share of ONSB Stock. See "DESCRIPTION OF THE MERGER--Possible
Adjustment of Exchange Rate."

       The following table sets forth the Exchange Rates and resulting dollar
values of LSB Stock received by ONSB shareholders that correspond with various
assumed Average Closing Prices of LSB Stock:

<TABLE>
<CAPTION>
    Average Closing Price          Exchange          Dollar Value of
        of LSB Stock                 Rate               LSB Stock
        ------------                 ----               ---------
            <S>                     <C>                   <C>   
            $15.00                  1.053                 $15.80
             16.00                  1.027                  16.43
             17.00                  1.004                  17.06
             18.00                  0.982                  17.69
             19.00                  0.964                  18.32
             20.00                  0.948                  18.96
             21.00                  0.910                  19.11
             22.00                  0.876                  19.27
             23.00                  0.845                  19.43
             24.00                  0.816                  19.59
</TABLE>

<PAGE>   12

   
       The Average Closing Price as calculated for the period ending June 26,
1997 was $19.73, which would have required an adjustment of the Exchange Rate
to 0.952, yielding a dollar value of $18.80 per share of ONSB Stock based on
the closing price of LSB Stock on June 26, 1997 of $19.75 per share. As of June
26, 1997, 1,506,709 shares of LSB Stock would have been issued to ONSB
shareholders in connection with the Merger based upon 1,582,678 shares of ONSB 
Stock outstanding on such date. The actual dollar value of LSB Stock received
by, and the number of shares of LSB Stock issued to, ONSB shareholders may
differ from these amounts based upon changes in the sale price of LSB Stock and
the number of outstanding shares of ONSB Stock, respectively, after the date of
this Joint Proxy Statement/Prospectus ("Proxy Statement"). 
    

       The "Average Closing Price" is defined in the Agreement as the average of
the daily closing sale prices of LSB Stock on the Nasdaq National Market System
(as reported by The Wall Street Journal or, if not reported thereby, another
authoritative source as selected by LSB) for the 15 consecutive trading days
immediately preceding the ten-day period ending on the closing date of the
Merger (the "Closing Date"). If the Average Closing Price of LSB Stock is
greater than $24.00 or less than $15.00, the Board of Directors of both LSB and
ONSB each has the right to terminate the Agreement. See "DESCRIPTION OF THE
MERGER--Waiver, Amendment, and Termination."

   
       This Prospectus also serves as the Proxy Statement of ONSB, and is being
furnished to the shareholders of ONSB in connection with the solicitation of
proxies by the Board of Directors of ONSB for use at its special meeting of
shareholders (including any adjournment or postponement thereof, the "ONSB
Special Meeting"), to be held on August 1, 1997, to consider and vote upon the
Agreement. This Proxy Statement and related materials enclosed herewith are
being mailed to shareholders of ONSB on or about June 26, 1997.
    

       Each holder of shares of ONSB Stock has the right to dissent from the
Merger and to demand appraisal and payment of the fair value of such holder's
shares of ONSB Stock if the Merger is approved and consummated. The right of any
such shareholder to such rights and remedies is contingent upon strict
compliance with the requirements set forth in Article 13 of the North Carolina
Business Corporation Act ("NCBCA"), the full text of which is attached as
Appendix B hereto. A shareholder of ONSB who wishes to dissent from the Merger
(i) must give ONSB written notice of his intent to demand payment for his shares
if the Merger is effectuated, which notice must be actually received by ONSB
before the vote is taken at the ONSB Special Meeting, and (ii) must not vote any
shares of ONSB Stock in favor of the Merger. See "DESCRIPTION OF THE
MERGER--Dissenters' Rights."

   
       This Prospectus also constitutes the Proxy Statement of LSB. It is being
provided to LSB shareholders in connection with the solicitation of proxies by
the Board of Directors of LSB for use at its special meeting of shareholders
(including any adjournment or postponement thereof, the "LSB Special Meeting"),
to be held on August 1, 1997, to consider and vote upon the issuance of shares
of LSB Stock in connection with the Merger. This Proxy Statement and related
materials enclosed herewith are being mailed to shareholders of LSB on or about
June 17, 1997.

       The Merger is expected to close within three weeks after the ONSB 
shareholders approve the Agreement and the LSB shareholders approve the 
issuance of LSB Stock in connection with the Merger.
    

       In the event that the rights of the ONSB and LSB Boards of Directors to
terminate the Agreement are triggered, the respective Boards of Directors will
be obligated to act in the best interests of the shareholders of the respective
companies in deciding whether to terminate the Agreement. In making these
decisions, the LSB and ONSB Boards of Directors would consider all relevant
facts and circumstances existing at the time


                                       ii

<PAGE>   13

of their respective decisions, including primarily the new amount of
consideration to be paid by LSB to ONSB shareholders, the time and expense
incurred by the respective companies up to that time, the factors considered by
the respective Boards when they initially approved the Merger as they relate to
existing market conditions, and the advice of their respective financial
advisors. See "BACKGROUND OF AND REASONS FOR THE MERGER--LSB Reasons for the
Merger" and "--ONSB Reasons for the Merger."

       In the event that the termination rights of the Boards of Directors are
triggered and both Boards decide that the Merger continues to be in the best
interests of their respective shareholders, the LSB Board intends to resolicit
approval from its shareholders of the issuance of shares of LSB Stock in
connection with the Merger. The ONSB Board will resolicit approval of the
Merger from its shareholders in the event that termination rights are triggered
because the Average Closing Price of LSB Stock is less than $15.00. In addition,
in the event that the condition precedent to consummation of the Merger
requiring a favorable tax opinion from Bell, Davis & Pitt, P.A. is waived, the
Boards of Directors of both ONSB and LSB will resolicit the approval of their
respective shareholders.

       THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION, NOR HAS THE
SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS PROXY STATEMENT. ANY REPRESENTATION TO THE
CONTRARY IS A CRIMINAL OFFENSE.

       THE SECURITIES OFFERED HEREBY ARE NOT DEPOSITS, SAVINGS ACCOUNTS, OR
OTHER OBLIGATIONS OF A DEPOSITORY INSTITUTION AND ARE NOT INSURED BY THE FEDERAL
DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENTAL AGENCY OR
INSTRUMENTALITY. THE SECURITIES ARE NOT OBLIGATIONS OF NOR ARE THE SECURITIES
GUARANTEED BY LEXINGTON STATE BANK OR LSB BANCSHARES, INC. THE SECURITIES ARE
SUBJECT TO INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF PRINCIPAL INVESTED.

   
           The date of this Joint Proxy Statement is July 1, 1997.
    











                                      iii

<PAGE>   14



                              AVAILABLE INFORMATION

       LSB is subject to the reporting requirements of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), and, in accordance therewith, is
required to file reports, proxy and information statements, and other
information with the Securities and Exchange Commission (the "SEC"). Copies of
such reports, proxy and information statements, and other information can be
obtained, at prescribed rates, from the SEC by addressing written requests for
such copies to the Public Reference Section at the SEC at 450 Fifth Street,
N.W., Judiciary Plaza, Washington, D.C. 20549. In addition, such reports, proxy
and information statements, and other information can be inspected at the public
reference facilities referred to above and at the regional offices of the SEC at
7 World Trade Center, 13th Floor, New York, New York 10048 and Northwestern
Atrium Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. The
SEC maintains a World Wide Web site on the Internet at "http://www.sec.gov" that
contains reports, proxy and information statements and other information
regarding registrants that file electronically with the SEC, including LSB. The
shares of LSB Stock are listed on the Nasdaq National Market ("Nasdaq"), and
reports, proxy and information statements, and other information concerning LSB
also may be inspected at the offices of Nasdaq, 1735 K Street, N.W., Washington,
D.C. 20006.

       ONSB also is subject to the informational requirements of the Exchange
Act and, in accordance therewith, files reports, proxy statements and other
information with the Federal Reserve Board (the "Federal Reserve"). Copies of
such reports, proxy statements and other information filed by ONSB may be
obtained from the Federal Reserve at prescribed rates by written requests for
such copies to the Federal Reserve, Records Office, 20th and C Streets, N.W.,
Washington, D.C. 20551, or the Federal Reserve Bank of Richmond, 701 East Byrd
Street, Richmond, Virginia 23219. In addition, such documents are exhibits to
the Registration Statement (as defined herein) and may be inspected and copied
at the public reference facilities maintained by the SEC at the addresses set
forth above.

       This Proxy Statement constitutes part of the Registration Statement on
Form S-4 of LSB (including any exhibits and amendments thereto, the
"Registration Statement") filed with the SEC under the Securities Act of 1933,
as amended (the "Securities Act"), relating to the securities offered hereby.
This Proxy Statement does not include all of the information in the Registration
Statement, certain portions of which have been omitted pursuant to the rules and
regulations of the SEC. For further information about LSB and the securities
offered hereby, reference is made to the Registration Statement. The
Registration Statement may be inspected and copied, at prescribed rates, at the
SEC's public reference facilities at the addresses set forth above.

       All information contained in this Proxy Statement or incorporated herein
by reference with respect to LSB was supplied by LSB and all information
contained in this Proxy Statement or incorporated herein by reference with
respect to ONSB was supplied by ONSB.

       NO PERSON IS AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION NOT CONTAINED OR INCORPORATED BY REFERENCE IN THIS PROXY
STATEMENT, AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION SHOULD NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED. THIS PROXY STATEMENT DOES NOT
CONSTITUTE AN OFFER TO SELL, OR A SOLICITATION OF AN OFFER TO PURCHASE, THE
SECURITIES OFFERED BY THIS PROXY STATEMENT IN ANY JURISDICTION TO OR FROM ANY
PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH AN OFFER OR SOLICITATION IN SUCH
JURISDICTION. NEITHER THE DELIVERY OF THIS PROXY STATEMENT NOR ANY DISTRIBUTION
OF THE SECURITIES BEING OFFERED 


                                       iv

<PAGE>   15

PURSUANT TO THIS PROXY STATEMENT SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN
IMPLICATION THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF LSB OR ONSB OR THE
INFORMATION SET FORTH OR INCORPORATED BY REFERENCE HEREIN SINCE THE DATE OF THIS
PROXY STATEMENT.



























                                       v
<PAGE>   16



                       DOCUMENTS INCORPORATED BY REFERENCE

       The following documents previously filed with the SEC by LSB pursuant to
the Exchange Act are hereby incorporated by reference herein:

       (a) LSB's Annual Report on Form 10-K, as amended, for the year ended
       December 31, 1996;

       (b) LSB's Quarterly Report on Form 10-Q, as amended, for the quarterly
       period ended March 31, 1997;

       (c) LSB's Current Report on Form 8-K dated March 14, 1997; and

       (d) The description of LSB Stock contained in LSB's Registration
       Statement on Form 8-A filed November 17, 1992, under the Exchange Act and
       any other amendment or report filed for the purpose of updating such
       description.

       The following documents previously filed with the Federal Reserve by ONSB
pursuant to the Exchange Act are hereby incorporated by reference herein and
attached as exhibits to the Registration Statement of which this Proxy Statement
is a part:

       (a) ONSB's Annual Report on Form 10-KSB, as amended, for the fiscal year
       ended December 31, 1996 filed as exhibit 13.1 to the Registration
       Statement of which this Proxy Statement is a part;

       (b) ONSB's Quarterly Report on Form 10-QSB for the quarterly period ended
       March 31, 1997 filed as exhibit 13.4 to the Registration Statement of
       which this Proxy Statement is a part; and

       (c) ONSB's Current Report on Form 8-K dated March 21, 1997 filed as
       exhibit 99.3 to the Registration Statement of which this Proxy Statement
       is a part.

       All documents filed by LSB pursuant to Sections 13(a), 13(c), 14, or
15(d) of the Exchange Act after the date of this Proxy Statement and prior to
final adjournment of the ONSB Special Meeting and LSB Special Meeting shall be
deemed to be incorporated by reference in this Proxy Statement and to be a part
hereof from the date of filing of such documents. Any statement contained herein
or in a document incorporated or deemed to be incorporated by reference herein
shall be deemed to be modified or superseded for purposes hereof to the extent
that a statement contained herein or in any subsequently filed document which
also is, or is deemed to be, incorporated by reference herein modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed to constitute a part hereof, except as so modified or superseded.

       LSB will provide without charge, upon the written or oral request of any
person, including any beneficial owner, to whom this Proxy Statement is
delivered a copy of any and all information (excluding certain exhibits)
relating to LSB that has been incorporated by reference in the Registration
Statement. Such requests should be directed to Monty J. Oliver, Secretary and
Treasurer, LSB Bancshares, Inc., One LSB Plaza, Lexington, North Carolina 27292
(telephone (910) 248-6500). ONSB will provide without charge, upon the written
or oral request of any person, including any beneficial owner, to whom this
Proxy Statement is delivered, a copy of any and all information (excluding
certain



                                       vi

<PAGE>   17

   
exhibits) relating to ONSB that has been incorporated by reference in the
Registration Statement of which this Proxy Statement is a part. Such requests
should be directed to Charles V. Darnell, Senior Vice President and Chief
Financial Officer, Old North State Bank, 161 South Stratford Road,
Winston-Salem, North Carolina 27104 (telephone (910) 983-0682). In order to
ensure timely delivery of the documents, any request should be made by July 25,
1997.

       ONSB'S ANNUAL REPORT TO SHAREHOLDERS, AS AMENDED, FOR THE FISCAL YEAR
ENDED DECEMBER 31, 1996, AND ONSB'S QUARTERLY REPORT ON FORM 10-QSB FOR THE
FISCAL QUARTER ENDED MARCH 31, 1997, ACCOMPANY THIS PROXY STATEMENT.
    

       THIS JOINT PROXY STATEMENT/PROSPECTUS CONTAINS CERTAIN FORWARD-LOOKING
STATEMENTS WITH RESPECT TO THE FINANCIAL CONDITION, RESULTS OF OPERATIONS AND
BUSINESS OF LSB FOLLOWING THE CONSUMMATION OF THE MERGER, INCLUDING STATEMENTS
RELATING TO THE COST SAVINGS AND REVENUE ENHANCEMENTS THAT ARE EXPECTED TO BE
REALIZED FROM THE MERGER AND THE EXPECTED IMPACT OF THE MERGER ON LSB FINANCIAL
PERFORMANCE (SEE "DESCRIPTION OF THE MERGER-BACKGROUND OF AND REASONS FOR THE
MERGER"). THESE FORWARD-LOOKING STATEMENTS INVOLVE CERTAIN RISKS AND
UNCERTAINTIES. FACTORS THAT MAY CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM
THOSE CONTEMPLATED BY SUCH FORWARD-LOOKING STATEMENTS INCLUDE, AMONG OTHERS, THE
FOLLOWING POSSIBILITIES: (1) EXPECTED COST SAVINGS FROM THE MERGER CANNOT BE
FULLY REALIZED; (2) DEPOSIT ATTRITION, CUSTOMER LOSS OR REVENUE LOSS FOLLOWING
THE MERGER IS GREATER THAN EXPECTED; (3) COMPETITIVE PRESSURE IN THE BANKING
INDUSTRY INCREASES SIGNIFICANTLY; (4) COSTS OR DIFFICULTIES RELATED TO THE
INTEGRATION OF THE BUSINESS OF LSB AND ONSB ARE GREATER THAN EXPECTED; (5)
REQUIRED OPERATIONAL DIVESTITURES ARE GREATER THAN EXPECTED; (6) CHANGES IN THE
INTEREST RATE ENVIRONMENT REDUCE MARGINS; (7) GENERAL ECONOMIC CONDITIONS,
EITHER NATIONALLY OR REGIONALLY, ARE LESS FAVORABLE THAN EXPECTED, RESULTING IN,
AMONG OTHER THINGS, A DETERIORATION IN CREDIT QUALITY; (8) CHANGES OCCUR IN THE
REGULATORY ENVIRONMENT; (9) CHANGES OCCUR IN BUSINESS CONDITIONS AND INFLATION;
AND (10) CHANGES OCCUR IN THE SECURITIES MARKETS.

















                                      vii

<PAGE>   18


                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                                       PAGE
                                                                                                                       ----
<S>                                                                                                                      <C>
SUMMARY...................................................................................................................1
         The Parties......................................................................................................1
         Meeting Of ONSB Shareholders.....................................................................................1
         Meeting Of LSB Shareholders......................................................................................2
         The Merger.......................................................................................................2
         Comparative Market Prices Of Common Stock........................................................................7
         Comparative Per Share Data.......................................................................................8
SELECTED FINANCIAL DATA..................................................................................................11
PRO FORMA CONDENSED FINANCIAL INFORMATION................................................................................14
COMPARATIVE MARKET PRICES AND DIVIDENDS..................................................................................23
SPECIAL MEETING OF ONSB SHAREHOLDERS.....................................................................................24
         Date, Place, Time, And Purpose..................................................................................24
         Record Dates, Voting Rights, Required Votes, And Revocability Of Proxies........................................24
         Solicitation Of Proxies.........................................................................................25
         Recommendation..................................................................................................25
SPECIAL MEETING OF LSB SHAREHOLDERS......................................................................................26
         Date, Place, Time, And Purpose..................................................................................26
         Record Dates, Voting Rights, Required Votes, And Revocability Of Proxies........................................26
         Solicitation Of Proxies.........................................................................................27
         Recommendation..................................................................................................27
DESCRIPTION OF THE MERGER................................................................................................28
         General.........................................................................................................28
         Possible Adjustment Of Exchange Rate............................................................................28
         Effect Of The Merger On Stock Options And Warrants..............................................................29
         Background Of And Reasons For The Merger........................................................................30
         Opinion Of ONSB's Financial Advisor.............................................................................35
         Opinion Of LSB's Financial Advisor..............................................................................39
         Effective Time Of The Merger....................................................................................44
         Distribution Of LSB Stock Certificates..........................................................................44
         Conditions To Consummation Of The Merger........................................................................45
         Regulatory Approvals............................................................................................46
         Waiver, Amendment, And Termination..............................................................................47
         Dissenters' Rights..............................................................................................48
         Conduct Of Business Pending The Merger..........................................................................50
         Management And Operations After The Merger......................................................................52
         Interests Of Certain Persons In The Merger......................................................................52
         Option Agreement................................................................................................55
         Certain Federal Income Tax Consequences.........................................................................55
         Accounting Treatment............................................................................................56
         Expenses And Fees...............................................................................................57
         Resales Of LSB Stock............................................................................................57
</TABLE>


                                      viii

<PAGE>   19
<TABLE>
<S>                                                                                                                      <C>
EFFECT OF THE MERGER ON RIGHTS OF SHAREHOLDERS...........................................................................59
         Anti-Takeover Provisions Generally..............................................................................59
         Authorized Capital Stock........................................................................................59
         Amendment Of Articles Of Incorporation And Bylaws...............................................................60
         Classified Board Of Directors And Absence Of Cumulative Voting..................................................61
         Removal Of Directors............................................................................................62
         Limitations On Director Liability...............................................................................62
         Indemnification.................................................................................................63
         Special Meeting Of Shareholders.................................................................................65
         Constituency And Stakeholder Provisions.........................................................................65
         Actions By Shareholders Without A Meeting.......................................................................65
         Shareholder Nominations And Proposals...........................................................................65
         Fair Price Provisions...........................................................................................66
         Business Combinations...........................................................................................66
         Dissenters' Rights of Appraisal.................................................................................67
         Shareholders' Rights To Examine Books And Records...............................................................67
         Dividends.......................................................................................................67
INFORMATION ABOUT ONSB...................................................................................................69
         General.........................................................................................................69
         Security Ownership Of Management................................................................................69
INFORMATION ABOUT LSB....................................................................................................70
         General.........................................................................................................70
         Security Ownership Of Management................................................................................70
CERTAIN REGULATORY CONSIDERATIONS........................................................................................71
         General.........................................................................................................71
         Community Reinvestment..........................................................................................72
         Payment Of Dividends............................................................................................74
         Capital Adequacy................................................................................................75
         Support Of Subsidiary Banks.....................................................................................76
         Prompt Corrective Action........................................................................................76
         FDIC Insurance Assessments......................................................................................78
         Safety And Soundness Standards..................................................................................79
         Depositor Preference............................................................................................79
DESCRIPTION OF LSB CAPITAL STOCK.........................................................................................80
OTHER MATTERS............................................................................................................80
EXPERTS..................................................................................................................80
OPINIONS.................................................................................................................80
SHAREHOLDER PROPOSALS....................................................................................................81
</TABLE>

   
APPENDICES
     Appendix A: Agreement and Plan of Reorganization and Merger
     Appendix B: Article 13 of the North Carolina Business Corporation Act
     Appendix C: Opinion of Scott & Stringfellow, Inc.
     Appendix D: Opinion of The Carson Medlin Company
    



                                       ix
<PAGE>   20


                                     SUMMARY

       Following is a summary of certain information contained in this Proxy
Statement and the documents incorporated herein by reference. This summary is
not intended to be a complete description of the matters covered in this Proxy
Statement and is qualified in its entirety by the more detailed information
appearing elsewhere or incorporated by reference in this Proxy Statement.
Shareholders are urged to read carefully the entire Proxy Statement, including
the appendices. As used in this Proxy Statement, the terms "LSB" and "ONSB"
refer to those entities, respectively, and, where the context requires, to LSB
and its subsidiaries and ONSB and its subsidiary, respectively.

THE PARTIES

       ONSB. ONSB is a North Carolina bank corporation headquartered in
Winston-Salem, North Carolina that operates seven banking offices in Forsyth
County and Stokes County. ONSB offers a broad range of banking and
banking-related services. As of March 31, 1997, ONSB had total consolidated
assets of approximately $137.3 million, total consolidated deposits of
approximately $112.2 million, and total consolidated shareholders' equity of
approximately $11.4 million. The principal executive offices of ONSB are located
at 161 South Stratford Road, Winston-Salem, North Carolina 27104, and its
telephone number at such address is (910) 631-3900. Additional information with
respect to ONSB is included in documents incorporated by reference in this Proxy
Statement. See "AVAILABLE INFORMATION," "DOCUMENTS INCORPORATED BY REFERENCE"
and "INFORMATION ABOUT ONSB."

       LSB. LSB, a North Carolina corporation, is a bank holding company
registered with the Federal Reserve under the federal Bank Holding Company Act
of 1956, as amended (the "BHC Act"). LSB owns all of the outstanding shares of
LSB Bank, a North Carolina bank corporation that operates 14 banking offices
located in Davidson County, North Carolina. LSB, through LSB Bank and its
subsidiaries, offers a full range of financial services related to commercial
banking, savings and trusts, including the acceptance of deposits, corporate
cash management, discount brokerage, IRA plans, secured and unsecured loans and
trust functions. As of March 31, 1997, LSB had total consolidated assets of
approximately $431.6 million, total consolidated deposits of approximately
$362.0 million, and total consolidated shareholders' equity of approximately
$52.6 million.

       The principal executive offices of LSB and LSB Bank are located at One
LSB Plaza, Lexington, North Carolina 27292, and its telephone number at such
address is (910) 248-6500. Additional information with respect to LSB and its
subsidiary is included in documents incorporated by reference in this Proxy
Statement. See "AVAILABLE INFORMATION," "DOCUMENTS INCORPORATED BY REFERENCE"
and "INFORMATION ABOUT LSB."

MEETING OF ONSB SHAREHOLDERS

   
       This Proxy Statement is being furnished to the holders of ONSB Stock in
connection with the solicitation by the ONSB Board of Directors of proxies for
use at the ONSB Special Meeting at which ONSB shareholders will be asked to vote
upon (i) a proposal to approve the Agreement and (ii) such other business as may
properly come before the meeting. The ONSB Special Meeting will be held at the
Holiday Inn Select, 5790 University Parkway, Winston-Salem, North Carolina, at
9:00 A.M., local time, on Friday, August 1, 1997. See "SPECIAL MEETING OF ONSB
SHAREHOLDERS--Date, Place, Time, and Purpose."
    



<PAGE>   21

   
       ONSB's Board of Directors fixed the close of business on June 26, 1997, 
as the record date (the "ONSB Record Date") for determination of the
shareholders entitled to notice of and to vote at the ONSB Special Meeting.
Only holders of record of shares of ONSB Stock on the ONSB Record Date are
entitled to notice of and to vote at the ONSB Special Meeting. Each share of
ONSB Stock is entitled to one vote. Shareholders who execute proxies retain the
right to revoke them at any time prior to being voted at the ONSB Special
Meeting. On the ONSB Record Date, 1,582,678 shares of ONSB Stock were issued
and outstanding. See "SPECIAL MEETING OF ONSB SHAREHOLDERS--Record Dates,
Voting Rights, Required Votes, and Revocability of Proxies."
    

       Approval of the Agreement requires the affirmative vote of two-thirds of
the votes entitled to be cast at the ONSB Special Meeting by the holders of the
issued and outstanding shares of ONSB Stock. As of May 31, 1997, directors and
executive officers of ONSB and their affiliates were entitled to vote 240,007
shares (excluding options) or approximately 15.2% of the outstanding shares of
ONSB Stock. See "SPECIAL MEETING OF ONSB SHAREHOLDERS--Record Dates, Voting
Rights, Required Votes, and Revocability of Proxies."

MEETING OF LSB SHAREHOLDERS

   
       This Proxy Statement is being provided to the holders of LSB Stock in
connection with the solicitation by the LSB Board of Directors of proxies for
use at the LSB Special Meeting at which LSB shareholders will be asked to vote
upon (i) a proposal to issue shares of LSB Stock in connection with the Merger
and (ii) such other business as may properly come before the meeting. The LSB
Special Meeting will be held at the offices of LSB at One LSB Plaza, Lexington,
North Carolina, at 1:00 P.M., local time, on Friday, August 1, 1997. See 
"SPECIAL MEETING OF LSB SHAREHOLDERS--Date, Place, Time, and Purpose."
    

       The Board of Directors of LSB has fixed the close of business on June 17,
1997, as the record date (the "LSB Record Date") for determination of the
shareholders entitled to notice of and to vote at the LSB Special Meeting. Only
holders of record of shares of LSB Stock on the LSB Record Date will be entitled
to notice of and to vote at the LSB Special Meeting. Each share of LSB Stock is
entitled to one vote. Shareholders who execute proxies retain the right to
revoke them at any time prior to being voted at the LSB Special Meeting. On the
LSB Record Date, 5,405,177 shares of LSB Stock were issued and outstanding. See
"SPECIAL MEETING OF LSB SHAREHOLDERS--Record Dates, Voting Rights, Required
Votes, and Revocability of Proxies."

       Approval of the issuance of shares of LSB Stock in connection with the
Merger requires the affirmative vote of a majority of the total votes cast on
the proposal in person or by proxy at the LSB Special Meeting. As of May 31,
1997, directors and executive officers of LSB and their affiliates were entitled
to vote 224,673 shares (excluding options) or approximately 4.2% of the
outstanding shares of LSB Stock. In addition, at May 31, 1997, the LSB Bank
Trust Department held approximately 176,556 shares, or 3.3%, of the then
outstanding shares of LSB Stock. See "SPECIAL MEETING OF LSB SHAREHOLDERS --
Record Dates, Voting Rights, Required Votes, and Revocability of Proxies."

THE MERGER

       GENERAL. The Agreement provides for the acquisition of ONSB by LSB
pursuant to the merger of ONSB with and into LSB Bank. At the Effective Time,
each share of ONSB Stock then issued and outstanding will be converted into and
exchanged for 0.948 of a share of LSB Stock, assuming an Average Closing Price
of LSB Stock of $20.00 per share. This would yield a dollar value of LSB Stock
received by ONSB shareholders of $18.96 per share of ONSB Stock. The Exchange
Rate could be greater or less than 0.948, depending upon the Average Closing
Price. To the extent that the Average 




                                       2
<PAGE>   22

   
Closing Price of LSB Stock is between $20.00 and $24.00, the Exchange Rate shall
be adjusted so that the dollar value of LSB Stock received by the shareholders
of ONSB will range from $18.96 to $19.59, respectively, per share of ONSB Stock.
To the extent that the Average Closing Price of LSB Stock is between $15.00 and
$20.00, the Exchange Rate shall be adjusted so that the dollar value of LSB
Stock received by the shareholders of ONSB will range from $15.80 to $18.96,
respectively, per share of ONSB Stock. The Average Closing Price calculated
for the period ending June 26, 1997 was $19.73, which would have required an 
adjustment of the Exchange Rate to $0.952, yielding a dollar value of $18.80 
per share of ONSB Stock based on the closing price of LSB Stock on June 26,
1997 of $19.75 per share. See "DESCRIPTION OF THE MERGER--Possible Adjustment of
Exchange Rate."
    

       The "Average Closing Price" is defined in the Agreement as the average of
the daily closing sale prices of LSB Stock quoted on the Nasdaq National Market
System (as reported by The Wall Street Journal or, if not reported thereby,
another authoritative source as selected by LSB) for the 15 consecutive trading
days immediately preceding the ten-day period ending on the Closing Date. If the
Average Closing Price of LSB Stock is greater than $24.00 or less than $15.00,
the Board of Directors of both LSB and ONSB each has the right to terminate the
Agreement. See "DESCRIPTION OF THE MERGER--Waiver, Amendment, and Termination."

       No fractional shares of LSB Stock will be issued. Rather, cash (without
interest) will be paid in lieu of any fractional share interest to which any
ONSB shareholder would be entitled upon consummation of the Merger, in an amount
equal to such fractional part of a share of LSB Stock multiplied by the market
value of one share of LSB Stock at the Effective Time. The market value of one
share of LSB Stock at the Effective Time shall be the Average Closing Price. See
"DESCRIPTION OF THE MERGER--General."

       The Agreement also contemplates that at the Effective Time, each option
to acquire shares of ONSB Stock pursuant to stock options ("ONSB Options")
granted by ONSB under the ONSB Stock Plans, as that term is defined in the
Agreement, which are outstanding at the Effective Time, whether or not
exerciseable, will be converted into and become rights with respect to LSB Stock
on a basis adjusted to reflect the Exchange Rate. The Agreement also provides
that at the Effective Time, each warrant to purchase shares of ONSB Stock (the
"ONSB Warrants") outstanding at the Effective Time will be converted into and
become a warrant to purchase LSB Stock on a basis adjusted to reflect the
Exchange Rate. See "DESCRIPTION OF THE MERGER--Effect of the Merger on Stock
Options and Warrants."

       As of the ONSB Record Date, ONSB had 1,582,678 shares of ONSB Stock
issued and outstanding and 151,636 additional shares of ONSB Stock that could be
purchased upon exercise of the ONSB Options and ONSB Warrants. Assuming an
Exchange Rate of 0.948 of a share of LSB Stock for each share of ONSB Stock, it
is anticipated that upon consummation of the Merger, LSB would issue
approximately 1,500,379 shares of LSB Stock, excluding shares subject to assumed
warrants and options. Accordingly, LSB would then have issued and outstanding
approximately 6,905,556 shares of LSB Stock based on the number of shares of LSB
Stock issued and outstanding on the LSB Record Date.

       REASONS FOR THE MERGER AND RECOMMENDATIONS OF THE BOARDS OF DIRECTORS.
The Boards of Directors of ONSB and LSB believe that the Agreement and the
Merger are in the best interests of ONSB and LSB and their respective
shareholders. THE ONSB BOARD OF DIRECTORS RECOMMENDS THAT ONSB SHAREHOLDERS VOTE
FOR APPROVAL OF THE AGREEMENT. THE LSB BOARD OF DIRECTORS RECOMMENDS THAT LSB
SHAREHOLDERS VOTE TO APPROVE THE ISSUANCE OF SHARES OF LSB STOCK IN CONNECTION
WITH THE MERGER. The Boards of Directors of ONSB and LSB believe that the Merger
will result in a company with expanded opportunities for profitable growth and
that the 





                                       3
<PAGE>   23

combined resources and capital of ONSB and LSB will provide an enhanced ability
to compete in the changing and competitive financial services industry. See
"DESCRIPTION OF THE MERGER--Background of and Reasons for the Merger."

       In approving the Agreement, the Boards of Directors of ONSB and LSB
considered, among other things, ONSB's and LSB's respective financial
conditions, the financial terms and income tax consequences of the Merger, the
likelihood of the Merger being approved by regulatory authorities without undue
conditions or delay, legal advice concerning the proposed Merger, the opinions
of Scott & Stringfellow, Inc. ("Scott & Stringfellow") and The Carson Medlin
Company ("Carson Medlin"), respectively, as to the fairness of the Exchange
Rate, from a financial point of view, to the shareholders of ONSB and LSB,
respectively, and in general the fairness of the terms of the Merger to the
shareholders of the respective banks. See "DESCRIPTION OF THE MERGER--Background
of and Reasons for the Merger."

   
       OPINIONS OF FINANCIAL ADVISORS. Scott & Stringfellow has rendered an
opinion to ONSB that, based on and subject to the procedures, matters and
limitations described in its opinion and such other matters as it considered
relevant, as of the date of its opinion, the Exchange Rate is fair, from a
financial point of view, to the shareholders of ONSB. Carson Medlin has rendered
an opinion to LSB that, based on and subject to the procedures, matters and
limitations described in its opinion and such other matters as it considered
relevant, as of the date of its opinion, the Exchange Rate is fair, from a
financial point of view, to the shareholders of LSB. The opinions of Scott &
Stringfellow and Carson Medlin, dated as of June 19, 1997 and June 27, 1997,
respectively, are attached as Appendices C and D, respectively, to this Proxy
Statement. Shareholders are urged to read the opinions in their entirety for a
description of the procedures followed, matters considered, and limitations on
the reviews undertaken in connection therewith. See "DESCRIPTION OF THE
MERGER--Opinion of ONSB's Financial Advisor" and "--Opinion of LSB's Financial
Advisor."
    

       EFFECTIVE TIME. Subject to the conditions to the obligations of the
parties to effect the Merger, the Effective Time will occur on the date and at
the time that the Articles of Merger become effective with the North Carolina
Secretary of State. Unless otherwise agreed upon by ONSB and LSB, the Effective
Time is expected to occur as soon as practicable after approval of the Merger by
ONSB shareholders and LSB shareholders and the effective date (including
expiration of all applicable waiting periods) of all required consents of any
regulatory authority having jurisdiction over the Merger. See "DESCRIPTION OF
THE MERGER--Effective Time of the Merger," "--Conditions to Consummation of the
Merger," and "--Waiver, Amendment, and Termination."

       No assurance can be provided that the necessary shareholder and
regulatory approvals can be obtained or that the other conditions precedent to
the Merger can or will be satisfied. ONSB and LSB anticipate that all conditions
to the consummation of the Merger will be satisfied so that the Merger can be
consummated during the third quarter of 1997. Delays in the consummation of the
Merger could occur, however.

       EXCHANGE OF STOCK CERTIFICATES. Promptly after the Effective Time, LSB
will cause Wachovia Bank of North Carolina, N.A., Winston-Salem, North Carolina,
acting in its capacity as exchange agent for LSB (the "Exchange Agent"), to mail
to each holder of record of a certificate or certificates (collectively, the
"Certificates") which, immediately prior to the Effective Time, represented
outstanding shares of ONSB Stock, a letter of transmittal and instructions for
use in effecting the surrender and cancellation of the Certificates in exchange
for certificates representing shares of LSB Stock. Cash will be paid to the
holders of ONSB Stock in lieu of the issuance of any fractional shares of LSB
Stock. In no event will the holder of any surrendered Certificate(s) be entitled
to receive interest on any cash to be paid to such holder, and in no event will
ONSB, LSB, LSB Bank or the Exchange Agent be liable to any 



                                       4
<PAGE>   24

holder of ONSB Stock for any LSB Stock or dividends thereon or cash delivered in
good faith to a public official pursuant to any applicable abandoned property,
escheat, or similar law.

       REGULATORY APPROVALS AND OTHER CONDITIONS. The Merger is subject to
approval by the Federal Deposit Insurance Corporation (the "FDIC") and the North
Carolina Commissioner of Banks (the "Commissioner"). Applications for the
requisite approvals have been filed with each of these agencies. The FDIC is
expected to approve the Merger in mid-July 1997, and the Commissioner is
expected to approve the Merger at the meeting of the North Carolina State
Banking Commission on July 23, 1997. THERE CAN BE NO ASSURANCE THAT SUCH
REGULATORY APPROVALS WILL BE OBTAINED OR AS TO THE TIMING OF ANY SUCH APPROVALS.
THERE ALSO CAN BE NO ASSURANCE THAT ANY SUCH APPROVALS WILL NOT IMPOSE
CONDITIONS THAT ARE DEEMED BY ONSB OR LSB TO MATERIALLY ADVERSELY IMPACT THE
ECONOMIC OR BUSINESS ASSUMPTIONS OF THE TRANSACTIONS CONTEMPLATED BY THIS
AGREEMENT.

       Consummation of the Merger is subject to various other conditions,
including receipt of the required approval of ONSB shareholders and LSB
shareholders, receipt of an opinion of counsel as to the tax-free nature of
certain aspects of the Merger, and certain other conditions. See "DESCRIPTION OF
THE MERGER--Regulatory Approvals" and "--Conditions to Consummation of the
Merger."

       WAIVER, AMENDMENT, AND TERMINATION. The Agreement may be terminated and
the Merger abandoned at any time prior to the Effective Time (i) by mutual
consent of the Boards of Directors of ONSB and LSB, (ii) by the action of the
Board of Directors of either company under certain circumstances, including if
the Merger is not consummated by September 30, 1997, unless the failure to
consummate by such time is due to a breach of the Agreement by the party seeking
to terminate, or if the Average Closing Price is either less than $15.00 or more
than $24.00, or (iii) in certain circumstances, by one of the parties in the
event that the other defaults in the performance of its representations,
warranties and agreements contained in the Agreement. If for any reason the
Merger is not consummated, ONSB shall continue to operate as a bank under its
present management. To the extent permitted by law, the Agreement may be amended
upon the written agreement of LSB and ONSB without the approval of shareholders;
provided, however, that the provisions of the Agreement relating to the manner
or basis in which shares of LSB Stock will be exchanged for ONSB Stock may not
be amended after the ONSB Special Meeting without the requisite approval of the
holders of the issued and outstanding shares of ONSB Stock entitled to vote
thereon. In addition, in the event that the condition precedent to consummation
of the Merger requiring a favorable tax opinion from Bell, Davis & Pitt, P.A. is
waived, the Boards of Directors of both ONSB and LSB will resolicit the approval
of their respective shareholders. See "DESCRIPTION OF THE MERGER--Possible
Adjustment of Exchange Rate" and "--Waiver, Amendment, and Termination."

       DISSENTERS' RIGHTS. Pursuant to Article 13 of the NCBCA, the holders of
ONSB Stock have dissenters' rights with respect to the Merger. Any ONSB
shareholder who does not vote in favor of the proposal to approve the Agreement
and the Merger contemplated thereby and who complies with certain requirements
of the applicable provisions of the NCBCA may have the right to an appraisal and
payment for such person's shares of ONSB Stock. LSB shareholders do not have
dissenters' rights with respect to the Merger.

       TO PERFECT DISSENTERS' RIGHTS OF APPRAISAL, A HOLDER OF ONSB STOCK MUST
STRICTLY COMPLY WITH THE APPLICABLE STATUTORY PROVISIONS, A COPY OF WHICH
PROVISIONS IS ATTACHED TO THIS PROXY STATEMENT AS APPENDIX B. A SHAREHOLDER OF
ONSB WHO WISHES TO DISSENT FROM THE MERGER (I) MUST GIVE ONSB WRITTEN NOTICE OF
HIS INTENT TO DEMAND PAYMENT FOR HIS SHARES IF THE MERGER IS EFFECTUATED, WHICH
NOTICE MUST BE ACTUALLY RECEIVED BY ONSB BEFORE THE VOTE IS TAKEN AT THE ONSB
SPECIAL MEETING AND (II) MUST NOT VOTE ANY SHARES OF ONSB STOCK IN FAVOR OF THE
MERGER. ANY HOLDER OF ONSB




                                       5
<PAGE>   25

STOCK WHO RETURNS A SIGNED PROXY BUT WHO FAILS TO PROVIDE VOTING INSTRUCTIONS
WITH RESPECT TO THE PROPOSAL TO APPROVE THE AGREEMENT WILL BE DEEMED TO HAVE
VOTED IN FAVOR OF SUCH PROPOSAL AND WILL NOT BE ENTITLED TO ASSERT DISSENTERS'
RIGHTS OF APPRAISAL. See "DESCRIPTION OF THE MERGER--Dissenters' Rights."

       INTERESTS OF CERTAIN PERSONS IN THE MERGER. Certain members of ONSB's
management and Board of Directors have interests in the Merger in addition to
their interests as shareholders or option holders of ONSB generally. Those
interests relate to, among other things, the right of ONSB under the Agreement
to recommend candidates to fill two additional directorships on the LSB and LSB
Bank Boards of Directors, change in control provisions in existing employment
agreements with ONSB, appointment of certain current officers of ONSB as
officers of LSB Bank, provisions in the Agreement regarding indemnification and
eligibility for certain LSB employee benefits, and amendment of an existing
employment agreement between ONSB and the President of ONSB. See "DESCRIPTION OF
THE MERGER--Interests of Certain Persons in the Merger."

       In connection with the right of ONSB to recommend candidates to fill two
additional directorships on the Boards of Directors of LSB and LSB Bank, ONSB
has recommended Lloyd G. Walter, Jr. and Marvin D. Gentry, both of whom are
currently directors of ONSB. In addition, pursuant to the Agreement, Nicholas A.
Daves, Chairman of the Board of ONSB, Charles V. Darnell, Senior Vice President
and Chief Financial Officer of ONSB, and Suzanne J. Bullotta, Senior Vice
President of ONSB, will be appointed to the offices of Senior Vice President of
LSB Bank, and other officers of ONSB will be appointed to offices of LSB Bank
with titles equivalent to the titles held by such officers at ONSB. Upon
consummation of the Merger, LSB Bank will assume Messrs. Daves' and Darnell's
existing employment agreement with ONSB. LSB anticipates, however, entering
into new employment agreements with Messrs. Daves and Darnell to replace their
existing employment agreements with ONSB, although the terms thereof have not
been agreed upon, and no assurance can be given that such agreements will be
executed. See "DESCRIPTION OF THE MERGER--Management and Operations After the
Merger" and "--Interests of Certain Persons in the Merger."

       ONSB, LSB Bank and the current President and Chief Executive Officer of
ONSB, Robert E. Marziano, have entered into an amendment, effective upon the
Merger, of Mr. Marziano's existing employment contract with ONSB. The amendment
modifies the change in control provision of Mr. Marziano's current employment
agreement to provide that at the Effective Time, Mr. Marziano's employment will
terminate and LSB Bank will pay him a $285,000 severance payment in cash. The
amendment also contains a modified non-compete provision in exchange for which
LSB Bank will pay Mr. Marziano, during his lifetime, 60 equal monthly cash
payments of $2,000. See "DESCRIPTION OF THE MERGER--Interests of Certain Persons
in the Merger."

       OPTION AGREEMENT. In addition to the Agreement, ONSB and LSB have entered
into an option agreement (the "Option Agreement"), pursuant to which ONSB has
granted an option to LSB to purchase under certain conditions 265,675 shares of
ONSB Stock at an exercise price of $8.00 in cash per share (the "Lock-Up
Option"). The Lock-Up Option is exercisable only if: (i) an offer to acquire
ONSB has been received by ONSB, or solicited by ONSB, from a person or entity
other than LSB, and (ii) ONSB and such person or entity have entered into an
agreement concerning any merger, sale of substantial assets, tender offer, sale
of shares of stock or similar transaction involving ONSB. LSB's right to
exercise the Lock-Up Option has not been triggered as of the date of this Proxy
Statement.

       CERTAIN FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER. It is intended
that the Merger will be treated as a reorganization within the meaning of
Section 368 of the Internal Revenue Code of 1986, as amended (the "Code").
Consummation of the Merger is conditioned upon receipt by ONSB and LSB of a
written opinion of Bell, Davis & Pitt, P.A., substantially to this effect. If
the Merger qualifies as a




                                       6
<PAGE>   26

tax-free reorganization, no gain or loss will be recognized by an ONSB
shareholder upon the exchange of such shareholder's ONSB Stock solely for shares
of LSB Stock. Subject to the provisions and limitations of Section 302(a) of the
Code, gain or loss will be recognized with respect to cash received in lieu of
fractional shares. Gain recognition, if any, will not be in excess of the amount
of cash received. TAX CONSEQUENCES OF THE MERGER FOR INDIVIDUAL TAXPAYERS CAN
VARY, HOWEVER, AND ALL ONSB SHAREHOLDERS ARE URGED TO CONSULT THEIR OWN TAX
ADVISORS TO DETERMINE THE EFFECT OF THE MERGER ON THEM UNDER FEDERAL, STATE,
LOCAL AND FOREIGN TAX LAWS. For a further discussion of the federal income tax
consequences of the Merger, see "DESCRIPTION OF THE MERGER--Certain Federal
Income Tax Consequences."

       ACCOUNTING TREATMENT. It is intended that the Merger will be accounted
for as a pooling-of-interests for accounting and financial reporting purposes.
See "DESCRIPTION OF THE MERGER--Accounting Treatment."

       CERTAIN DIFFERENCES IN SHAREHOLDERS' RIGHTS. At the Effective Time, ONSB
shareholders, whose rights are governed by ONSB's Articles of Incorporation and
Bylaws, will automatically become LSB shareholders, and their rights as LSB
shareholders will be determined by LSB's Articles of Incorporation and Bylaws
and by the NCBCA.

       The rights of LSB shareholders differ from the current rights of ONSB
shareholders in certain respects. After the Merger, ONSB shareholders will have
the same rights as LSB shareholders. See "EFFECT OF THE MERGER ON RIGHTS OF
SHAREHOLDERS."

       CONDUCT OF BUSINESS PENDING THE MERGER. Each party has agreed in the
Agreement to, among other things, operate its business only in the ordinary
course and to take no action that would adversely affect its or the other
party's ability to perform its covenants and agreements under the Agreement. In
addition, ONSB has agreed not to take certain actions relating to the operation
of ONSB pending consummation of the Merger, except as otherwise permitted by the
Agreement. See "DESCRIPTION OF THE MERGER--Conduct of Business Pending the
Merger," for a description of these limitations on the conduct of ONSB's
business.

COMPARATIVE MARKET PRICES OF COMMON STOCK

   
       Shares of LSB Stock are traded over-the-counter and quoted electronically
through the Nasdaq National Market System under the symbol "LXBK." Shares of
ONSB Stock are traded on the OTC Bulletin Board System under the symbol "ONSB."
ONSB Stock quotes are listed in the Charlotte Observer. Scott & Stringfellow,
Interstate/Johnson Lane and Legg Mason Wood Walker, registered broker-dealers,
have been listed as market makers for ONSB Stock. The following table sets forth
the reported closing prices per share for LSB Stock, the last bid quotation for
ONSB Stock (as reported in the Charlotte Observer) and the equivalent per share
prices (as explained below) for ONSB Stock on January 17, 1997, the last full
business day preceding the public announcement of the intention of the parties
to effect the Merger, and on June 27, 1997, the latest practicable date prior
to the mailing of this Proxy Statement.
    




                                       7
<PAGE>   27


   
<TABLE>
<CAPTION>
                                                             
                                                             EQUIVALENT PER     
MARKET PRICE PER SHARE AT:      ONSB STOCK    LSB STOCK        SHARE PRICE
- --------------------------      ----------    ---------      -------------- 

<S>                               <C>           <C>             <C>   
January 17, 1997                  $14.25        $20.50          $19.43
June 27, 1997                     $16.75        $19.50          $18.49
</TABLE>
    

       The equivalent per share price of a share of ONSB Stock at each specified
date represents the closing sale price of a share of LSB Stock on such date
multiplied by the assumed Exchange Rate of 0.948. See "COMPARATIVE MARKET PRICES
AND DIVIDENDS."

       There can be no assurance as to what the market price of LSB Stock will
be if and when the Merger is consummated.

COMPARATIVE PER SHARE DATA

       The following table sets forth: (a) selected comparative per share data
for each of LSB and ONSB on an historical basis; (b) unaudited pro forma
comparative per share data assuming that the Merger had been effective during
the periods presented for LSB and ONSB combined; and (c) ONSB pro forma
equivalent amounts, using the Exchange Rate of 0.948 shares of LSB Stock for
each share of ONSB Stock. The Exchange Rate is subject to adjustment under
certain circumstances. See "THE MERGER--Exchange Rate." The unaudited pro forma
data has been prepared giving effect to the Merger as a pooling-of-interests.
For a description of the effect of pooling-of-interests accounting on the Merger
and the historical financial statements of LSB, see "THE MERGER--Accounting
Treatment."














                                       8
<PAGE>   28

         The comparative per share data presented are based on and derived from,
and should be read in conjunction with, the historical consolidated financial
statements and the related notes thereto of each of LSB and ONSB incorporated by
reference herein. See "DOCUMENTS INCORPORATED BY REFERENCE" and "--Selected
Financial Data."

<TABLE>
<CAPTION>
                                                         For the Three Months Ended              For the Year Ended
                                                                   March 31,                        December 31,
                                                         --------------------------      -------------------------------
                                                           1997           1996           1996          1995         1994
                                                           ----           ----           ----          ----         ----
<S>                                                       <C>             <C>           <C>            <C>         <C>  
Earnings per share
     LSB historical                                       $0.31           $0.20         $1.08          $0.89       $0.84           
     ONSB historical                                       0.21            0.19          0.65           0.50        0.44           
     LSB and ONSB pro forma                                0.29            0.20          1.00           0.85        0.79           
     ONSB pro forma equivalent                             0.27            0.19          0.95           0.81        0.75           
                                                                                                                                   
Cash dividends declared per share                                                                                                  
     LSB historical                                       $0.11           $0.10         $0.40          $0.38       $0.35           
     ONSB historical                                       0.00            0.00          0.00           0.00        0.04           
     LSB and ONSB pro forma                                0.11            0.10          0.40           0.38        0.35           
     ONSB pro forma equivalent                             0.10            0.09          0.38           0.36        0.33           
                                                                                                                                   
Shareholders' equity per share (end of period)                                                                                     
     LSB historical                                       $9.74           $9.00         $9.57          $8.95       $8.32           
     ONSB historical                                       7.17            6.56          7.07           6.52        5.33           
     LSB and ONSB pro forma                                9.16            8.55          9.00           8.39        7.88           
     ONSB pro forma equivalent                             8.68            8.11          8.53           7.95        7.47           
</TABLE>









                                       9
<PAGE>   29


                         NOTES TO COMPARATIVE SHARE DATA
                                   (UNAUDITED)

       Certain material, nonrecurring adjustments of approximately $900 thousand
(pre-tax) will be recorded in conjunction with the Merger. These adjustments
include amounts to effect the settlement of obligations under existing
employment contracts and amounts associated with the conversion of ONSB
branches. It is estimated that approximately $450 thousand of the expenses will
be directly related to effecting the Merger and therefore will not be deductible
for income tax purposes. The impact of these adjustments has been reflected in
the calculation of shareholders' equity per common share. The earnings per share
calculations do not reflect the impact of these adjustments.

       Pro forma cash dividends declared per common share represent historical
dividends per share paid by LSB.

       ONSB pro forma equivalent amounts are calculated by multiplying the LSB
and ONSB pro forma combined amounts by the Exchange Rate of 0.948 shares of LSB
Stock for each share of ONSB Stock. As provided in the Agreement, the Exchange
Rate may change due to changes in the LSB Stock price.



















                                       10
<PAGE>   30




                             SELECTED FINANCIAL DATA

       The following selected historical financial information has been derived
from historical consolidated financial statements of LSB and ONSB, respectively,
and should be read in conjunction with such historical financial statements and
the notes thereto, which are incorporated herein by reference. See "AVAILABLE
INFORMATION" and "DOCUMENTS INCORPORATED BY REFERENCE."























                                       11
<PAGE>   31



                                       LSB
                       SELECTED HISTORICAL FINANCIAL DATA

   
<TABLE>
<CAPTION>
                                                FOR THE THREE
                                                MONTHS ENDED                             FOR THE YEAR ENDED
                                                  MARCH 31,                                 DECEMBER 31,
                                            --------------------    --------------------------------------------------------
                                              1997        1996         1996       1995        1994          1993       1992
                                           ----------  ----------   ---------  ----------   ---------   -----------  -------
                                                                            (Dollars in thousands, except per share data)
<S>                                         <C>         <C>         <C>         <C>         <C>         <C>         <C>     
Summary of Operations
  Interest income                           $  8,144    $  7,141    $ 30,292    $ 28,051    $ 24,393    $ 22,916    $ 24,468
  Interest expense                             3,346       2,851      12,152      11,448       8,695       8,048       9,931
                                            --------    --------    --------    --------    --------    --------    --------

  Net interest income                          4,798       4,290      18,140      16,603      15,698      14,868      14,537
  Provision for loan and lease losses             93          73         562         252         219         941         843
                                            --------    --------    --------    --------    --------    --------    --------

  Net interest income after provision 
    for loan and lease losses                  4,705       4,217      17,578      16,351      15,479      13,927      13,694
  Noninterest income                           1,173         955       4,113       3,244       2,603       3,214       2,612
  Noninterest expense                          3,429       3,753      13,529      13,112      12,198      11,436      10,166
                                            --------    --------    --------    --------    --------    --------    --------

  Income before income taxes                   2,449       1,419       8,162       6,483       5,884       5,705       6,140
  Provision for income taxes                     763         345       2,323       1,701       1,422       1,349       1,736
                                            --------    --------    --------    --------    --------    --------    --------

  Net income                                $  1,686    $  1,074    $  5,839    $  4,782       4,462    $  4,356    $  4,404
                                            ========    ========    ========    ========    ========    ========    ========

Per Share Data (1)
  Earnings                                  $   0.31    $   0.20        1.08        0.89        0.84        0.82        0.83
  Cash dividends declared                       0.11        0.10        0.40        0.38        0.35        0.33        0.31
  Book value                                    9.74        9.00        9.57        8.95        8.32        7.90        7.40

Average Balance Sheets
  Securities at carrying value              $ 85,628    $108,276     102,550     106,728      99,475      91,532      95,098
  Loans and leases (2)                       273,973     225,566     246,998     214,380     202,589     189,773     177,561
  Other assets                                67,981      40,963      46,072      45,731      49,355      49,434      45,632
                                            --------    --------    --------    --------    --------    --------    --------

    Total assets                            $427,582    $374,805    $395,620    $366,839     351,419    $330,739    $318,291
                                            ========    ========    ========    ========    ========    ========    ========

  Deposits                                  $360,118    $322,475     336,210     317,450     303,919     286,155     277,379
  Other liabilities                            5,396       3,683       5,363       3,144       4,147       3,824       3,011
  Long-term debt                               9,663          --       4,258          --          --          --          --
  Shareholders' equity                        52,405      48,647      49,789      46,245      43,353      40,760      37,901
                                            --------    --------    --------    --------    --------    --------    --------

    Total liabilities and
      shareholders' equity                  $427,582    $374,805    $395,620    $366,839     351,419    $330,739    $318,291
                                            ========    ========    ========    ========    ========    ========    ========

Period End Balances
  Total assets                              $431,552    $370,756     421,600    $375,026     357,092    $342,980    $323,490
  Deposits                                   362,024     318,215     354,820     323,289     309,906     296,903     281,291
  Long-term debt                              10,333          --       9,167          --          --          --          --
  Shareholders' equity                        52,641      48,436      51,687      48,110      44,475      42,036      39,289

Selected Ratios 
  Rate of return on:
    Average total assets                        1.58%(3)    1.15%(3)    1.48%       1.30%       1.27%       1.32%       1.38%
    Average common shareholders' equity        12.87 (3)    8.83 (3)   11.73       10.34       10.29       10.69       11.62
  Dividend payout                              34.65       50.00       36.96       43.09       42.05       40.52       36.78
  Average equity to average assets             12.26       12.98       12.59       12.61       12.34       12.32       11.91
</TABLE>
    


- --------------------------------------
(1)    Per share data have been restated to give retroactive effect to the
       five-for-four stock splits paid February 15, 1996, March 31, 1994, and
       March 31, 1992.
(2)    Loans and leases are net of unearned income and the allowance for losses.
       Amounts include loans held for sale.
   
(3)    Calculated on an annualized basis.
    





                                       12
<PAGE>   32


                                      ONSB
                      SELECTED HISTORICAL FINANCIAL DATA(1)

   
<TABLE>
<CAPTION>
                                           FOR THE THREE
                                            MONTHS ENDED                             FOR THE YEAR ENDED
                                              MARCH 31,                                 DECEMBER 31,
                                        -------------------   ------------------------------------------------------
                                           1997      1996       1996       1995       1994      1993(2)      1992
                                        --------  ---------   --------   --------   -------    ---------  ----------
                                                                        (Dollars in thousands, except per share data)
<S>                                     <C>        <C>        <C>        <C>        <C>         <C>        <C>     
Summary of Operations
  Interest income                       $  2,613   $  2,340   $  9,891   $  4,282   $  2,945    $ 2,294    $  2,032
  Interest expense                         1,193      1,098      4,389      1,978      1,163        957         959
                                        --------   --------   --------   --------   --------    -------    --------

  Net interest income                      1,420      1,242      5,502      2,304      1,782      1,337       1,073
  Provision for loan and lease losses         25         60        243        115         63        120         123
                                        --------   --------   --------   --------   --------    -------    ---------

  Net interest income after provision 
    for loan and lease losses              1,395      1,182      5,259      2,189      1,719      1,217         950
  Noninterest income                         133        259        719        355        248        234         183
  Noninterest expense                      1,065      1,033      4,558      1,979      1,512      1,237       1,028
                                        --------   --------   --------   --------   --------    -------    --------

  Income before income taxes                 463        408      1,420        565        455        214         105
  Provision (benefit) for income taxes       137        117        394        187        156        (30)         --
                                        --------   --------   --------   --------   --------    -------    --------

  Net income                            $    326   $    291   $  1,026   $    378   $    299    $   244    $    105
                                        ========   ========   ========   ========   ========    =======    ========

Per Share Data (4)
  Earnings                              $   0.21   $   0.19       0.65        .50       0.44       0.36        0.16
  Cash dividends declared                     --         --         --         --       0.04         --          --
  Book value                                7.17       6.56       7.07       6.52       5.33       5.35        4.98

Average Balance Sheets
  Securities at carrying value          $ 37,089   $ 36,353   $ 38,236   $ 18,881   $ 11,373    $ 8,159    $  6,844    
  Loans and leases (3)                    84,488     71,749     76,192     30,279     24,725     20,822      17,137
  Other assets                            11,393     12,258      9,851      4,270      3,607      3,090       2,586
                                        --------   --------   --------   --------   --------    -------    --------

    Total assets                        $132,970   $120,360   $124,279   $ 53,430   $ 39,705    $32,071    $ 26,567
                                        ========   ========   ========   ========   ========    =======    ========

  Deposits                              $108,074   $103,027    106,063     47,964     35,146     28,298      22,981
  Other liabilities                        4,310      3,306      2,950        682        456        294         260
  Long-term debt                           9,152      3,626      4,620        397        370         --          --
  Shareholders' equity                    11,434     10,401     10,646      4,387      3,733      3,479       3,326
                                        --------   --------   --------   --------   --------    -------    --------

    Total liabilities and
      shareholders' equity              $132,970   $120,360   $124,279   $ 53,430   $ 39,705   $ 32,071    $ 26,567
                                        ========   ========   ========   ========   ========    ========   ========

Period End Balances
  Total assets                          $137,274   $123,900    130,245   $118,407   $ 46,748   $ 36,221    $ 30,105
  Deposits                               112,220    106,532    110,101    104,743     41,681     32,267      26,425
  Long-term debt                          10,017      5,000      4,908         --        375         --          --
  Shareholders' equity                    11,354     10,314     11,176     10,245      3,962      3,615       3,370

Selected Ratios
  Rate of return on:
    Average total assets                    0.98%(5)   0.97%(5)   0.82%      0.71%      0.75%      0.76%       0.40%
    Average common shareholders' equity    11.40 (5)  11.19 (5)   9.64       8.62       8.00       7.02        3.16
  Dividend payout                             --         --         --         --       9.19         --          --
  Average equity to average assets          8.60       8.64       8.57       8.21       9.40      10.85       12.52
</TABLE>
    

- --------------------------------------
(1)  On December 28, 1995, ONSB consummated a merger with Piedmont BancShares
     Corporation and its consolidated subsidiary, Enterprise Bank and Trust
     Company. The acquisition was accounted for under the purchase method of
     accounting. Accordingly, the consolidated financial statements reflect the
     results of operations of the acquired companies since the date of
     acquisition.
(2)  Effective January 1, 1993, ONSB adopted SFAS No. 109, "Accounting for
     Income Taxes," resulting in a one-time tax benefit. The cumulative effect
     of this accounting change on periods prior to and including December 31,
     1992 was to increase net deferred tax assets at January 1, 1993, and
     increase 1993 net income by $102 thousand. Earnings per share in 1993
     increased $.31 as a result of this change in accounting principle
(3)  Loans and leases are net of unearned income and the allowance for losses.  
     Amounts include loans held for sale.
(4)  Per share data have been restated to give  retroactive  effect to the 5% 
     stock dividend in 1994 and the  1.922-for-1 stock split in 1995.
   
(5)  Calculated on an annualized basis.
    






                                       13
<PAGE>   33



                    PRO FORMA CONDENSED FINANCIAL INFORMATION

       The following Pro Forma Condensed Financial Information and explanatory
notes are presented to show the impact of the Merger on LSB's historical
financial position and results of operations. The Merger is reflected in the Pro
Forma Condensed Financial Information under the pooling-of-interests method of
accounting.

       The Pro Forma Condensed Balance Sheet presented assumes that the Merger
was consummated on December 31, 1996, and the Pro Forma Condensed Income
Statements assume that the Merger was consummated at the beginning of each
period presented.

       ONSB acquired Piedmont BancShares Corporation and its consolidated
subsidiary, Enterprise Bank and Trust Company, in the fourth quarter of 1995.
The acquisition was accounted for under the purchase method of accounting, and,
accordingly, the consolidated financial statements of LSB reflected in the
following pro forma condensed financial information include the results of
operations of the acquired companies since the date of acquisition.

       The pro forma earnings are not necessarily indicative of the results of
operations had the Merger occurred at the beginning of the periods presented,
nor are they necessarily indicative of the results of future operations.





























                                       14
<PAGE>   34




                        PRO FORMA CONDENSED BALANCE SHEET
                                 MARCH 31, 1997
                                   (UNAUDITED)
                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                                                  
                                                                                                                   LSB AND
                                                                                   PRO FORMA ADJUSTMENTS            ONSB
                                                                                ---------------------------       PRO FORMA
                                                      LSB           ONSB           LSB              ONSB            DEBIT
                                                  ---------      ---------      ----------       ----------       ---------
<S>                                               <C>            <C>            <C>              <C>              <C>            
ASSETS
     Cash and cash equivalents                    $  16,517      $   4,978      $                $                $  21,495
     Federal funds sold and securities
        purchased under resale agreements
        or similar arrangements                      34,900          3,025                                           37,925
     Securities at carrying value                    84,569         38,794                                          123,363
     Loans and leases, net of unearned
        income                                      283,254         85,976                                          369,230
         Allowance for loan and lease losses         (3,086)        (1,026)                                          (4,112)

                                                  ---------      ---------      ---------        ---------        ---------
              Loans and leases, net                 280,168         84,950                                          365,118
                                                  ---------      ---------      ---------        ---------        ---------

     Premises and equipment, net                      8,811          2,355                                           11,166
     Other assets                                     6,587          3,172                                            9,759
                                                  ---------      ---------      ---------        ---------        ---------
              Total assets                        $ 431,552      $ 137,274      $     --        $      --         $ 568,826
                                                  =========      =========      =========        =========        =========

LIABILITIES AND SHAREHOLDERS' EQUITY
     Noninterest-bearing demand deposits          $  40,834         15,352      $                $                $  56,186
     Interest-bearing deposits                      321,190         96,868                                          418,058
                                                  ---------      ---------      ---------        ---------        ---------
              Total deposits                        362,024        112,220                                          474,244

     Short-term borrowed funds                        3,663          2,573                                            6,236
     Long-term debt                                  10,333         10,017                                           20,350
     Accounts payable and other                       2,891          1,110                             758(1)         4,759
     liabilities                                  ---------      ---------      ---------        ---------        ---------
              Total liabilities                     378,911        125,920            --               758          505,589
                                                  ---------      ---------      ---------        ---------        ---------

Shareholders' equity:
     Common stock, $5 par, 10,000,000               
        shares authorized, 5,403,539
        issued and outstanding at March 31,
        1997, 5,403,539 shares and 6,902,918
        shares pro forma issued and
        outstanding, respectively                    27,018          7,913            411(2)                         34,520
     Additional paid-in capital                      11,331          2,851                             411(2)        14,593
     Retained earnings                               14,428            855            758(1)                         14,525
     Net unrealized appreciation
        (depreciation) on securities
        available for sale                             (136)          (265)                                            (401)
                                                  ---------      ---------      ---------        ---------        ---------

              Total shareholders' equity             52,641         11,354          1,169              411           63,237
                                                  ---------      ---------      ---------        ---------        ---------

              Total liabilities and
                 shareholders' equity             $ 431,552      $ 137,274      $   1,169        $   1,169        $ 568,826
                                                  =========      =========      =========        =========        =========
</TABLE>


            See Notes for Pro Forma Condensed Financial Information.





                                       15
<PAGE>   35





                      PRO FORMA CONDENSED BALANCE SHEET
                              DECEMBER 31, 1996
                                 (UNAUDITED)
                (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                                                  
                                                                                                                   LSB AND
                                                                                   PRO FORMA ADJUSTMENTS            ONSB
                                                                                ---------------------------       PRO FORMA
                                                      LSB           ONSB           LSB              ONSB            DEBIT
                                                  ---------      ---------      ----------       ----------       ---------
<S>                                               <C>            <C>            <C>              <C>              <C>            
ASSETS                                                                                                     
     Cash and cash equivalents                    $  20,611      $   4,564      $                $                $  25,175
     Federal funds sold and securities                                                                            
        purchased under resale agreements                                                                         
        or similar arrangements                      26,720            --                                            26,720
     Securities at carrying value                    90,617         37,484                                          128,101
     Loans and leases, net of unearned                                                                            
        income                                      272,044         83,849                                          355,893
         Allowance for loan and lease losses         (3,075)        (1,000)                                          (4,075)
                                                  ---------      ---------      ----------       ----------       ---------
              Loans and leases, net                 268,969         82,849                                          351,818
                                                  ---------      ---------      ----------       ----------       ---------
                                                                                                                  
     Premises and equipment, net                      8,840          2,424                                           11,264
     Other assets                                     5,843          2,924                                            8,767
                                                  ---------      ---------      ----------       ----------       ---------
              Total assets                        $ 421,600      $ 130,245      $      --        $      --        $ 551,845
                                                  =========      =========      ==========       ==========       =========
                                                                                                                  
LIABILITIES AND SHAREHOLDERS' EQUITY                                                                              
     Noninterest-bearing demand deposits          $  43,987         18,532      $                $                $  62,519
     Interest-bearing deposits                      310,833         91,569                                          402,402
                                                  ---------      ---------      ----------       ----------       --------- 
              Total deposits                        354,820        110,101                                          464,921
                                                                                                                  
     Short-term borrowed funds                        3,285          2,825                                            6,110
     Long-term debt                                   9,167          4,908                                           14,075
     Accounts payable and other liabilities           2,641          1,235                              758(1)        4,634
                                                  ---------      ---------      ----------       ----------       ---------
              Total liabilities                     369,913        119,069             --               758         489,740
                                                  ---------      ---------      ----------       ----------       ---------  
                                                                                                                  
Shareholders' equity:                                                                                             
     Common stock, $5 par, 10,000,000                                                                             
       shares authorized, 5,403,539                                                                               
        issued and outstanding at December 31,                                                                    
        1996, 5,403,539 shares and 6,902,306         
        shares pro forma issued and                                                                               
        outstanding, respectively                    27,018          7,905               411 (2)                     34,512
     Additional paid-in capital                      11,331          2,850                              411(2)       14,592
     Retained earnings                               13,337            529               758 (1)                     13,108
     Net unrealized appreciation                                                                                  
        (depreciation) on securities                                                                              
        available for sale                                1           (108)                                            (107)
                                                  ---------      ---------        ----------    -----------       --------- 
                                                                                                                  
              Total shareholders' equity             51,687         11,176             1,161            403          62,105
                                                  ---------      ---------        ----------    -----------       --------- 
                                                                                                                  
              Total liabilities and                                                                               
              shareholders' equity                $ 421,600      $ 130,245        $    1,161    $     1,161       $ 551,845
                                                  =========      =========        ==========    ===========       =========
</TABLE>


            See Notes for Pro Forma Condensed Financial Information.



                                      16


 

<PAGE>   36




                     PRO FORMA CONDENSED INCOME STATEMENT
                  FOR THE THREE MONTHS ENDED MARCH 31, 1997
                                 (UNAUDITED)
                (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                         LSB AND ONSB
                                                                                          PRO FORMA
                                                            LSB              ONSB        COMBINED (3)
                                                        -----------     -----------      -----------
<S>                                                     <C>             <C>              <C>        
INTEREST INCOME
     Interest and fees on loans                         $     6,403     $     2,001      $     8,404
     Interest and dividends on securities                     1,250             585            1,835
     Interest on short-term investments                         491              27              518
                                                        -----------     -----------      -----------
         Total interest income                                8,144           2,613           10,757
                                                        -----------     -----------      -----------

INTEREST EXPENSE
     Interest on deposits                                     3,168           1,032            4,200
     Interest on short-term borrowed funds                       25              32               57
     Interest on long-term debt                                 153             129              282
                                                        -----------     -----------      -----------
         Total interest expense                               3,346           1,193            4,539
                                                        -----------     -----------      -----------

NET INTEREST INCOME                                           4,798           1,420            6,218
     Provision for loan losses                                   93              25              118
                                                        -----------     -----------      -----------

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES           4,705           1,395            6,100
                                                        -----------     -----------      -----------

NONINTEREST INCOME
     Service charges on deposit accounts                        505             135              640
     Other noninterest income                                   668              (2)             666
                                                        -----------     -----------      -----------
         Total noninterest income                             1,173             133            1,306
                                                        -----------     -----------      -----------

NONINTEREST EXPENSE
     Personnel expense                                        2,003             567            2,570
     Occupancy and equipment expense                            400             196              596
     Other noninterest expense                                1,026             302            1,328
                                                        -----------     -----------      -----------
         Total noninterest expense                            3,429           1,065            4,494
                                                        -----------     -----------      -----------

EARNINGS
     Income before income taxes                               2,449             463            2,912
     Income tax expense                                         763             137              900
                                                        -----------     -----------      -----------

     NET INCOME                                         $     1,686     $       326      $     2,012
                                                        ===========     ===========      ===========

PER SHARE
     Net income                                         $      0.31     $      0.21      $      0.29
                                                        ===========     ===========      ===========

AVERAGE SHARES OUTSTANDING                                5,403,539       1,582,395        6,903,640
                                                        ===========     ===========      ===========
</TABLE>

             See Notes to Pro Forma Condensed Financial Information.



                                       17


<PAGE>   37




                      PRO FORMA CONDENSED INCOME STATEMENT
                    FOR THE THREE MONTHS ENDED MARCH 31, 1996
                                   (UNAUDITED)
                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                        LSB AND ONSB
                                                                                          PRO FORMA
                                                            LSB             ONSB         COMBINED (3)
                                                        -----------     -----------      -----------
<S>                                                     <C>             <C>              <C>        
INTEREST INCOME
   Interest and fees on loans                           $     5,345     $     1,705      $     7,050
   Interest and dividends on securities                       1,648             595            2,243
   Interest on short-term investments                           148              40              188
                                                        -----------     -----------      -----------
       Total interest income                                  7,141           2,340            9,481
                                                        -----------     -----------      -----------

INTEREST EXPENSE
   Interest on deposits                                       2,835           1,032            3,867
   Interest on short-term borrowed funds                         16              14               30
   Interest on long-term debt                                    --              52               52
                                                        -----------     -----------      -----------
       Total interest expense                                 2,851           1,098            3,949
                                                        -----------     -----------      -----------

NET INTEREST INCOME                                           4,290           1,242            5,532
   Provision for loan losses                                     73              60              133
                                                        -----------     -----------      -----------

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES           4,217           1,182            5,399
                                                        -----------     -----------      -----------

NONINTEREST INCOME
   Service charges on deposit accounts                          493             119              612
   Other noninterest income                                     462             140              602
                                                        -----------     -----------      -----------
       Total noninterest income                                 955             259            1,214
                                                        -----------     -----------      -----------

NONINTEREST EXPENSE
   Personnel expense                                          1,942             537            2,479
   Occupancy and equipment expense                              359             187              546
   Other noninterest expense                                  1,452             309            1,761
                                                        -----------     -----------      -----------
       Total noninterest expense                              3,753           1,033            4,786
                                                        -----------     -----------      -----------

EARNINGS
   Income before income taxes                                 1,419             408            1,827
   Income tax expense                                           345             117              462
                                                        -----------     -----------      -----------

   NET INCOME                                           $     1,074     $       291      $     1,365
                                                        ===========     ===========      ===========

PER SHARE
   Net income                                           $      0.20     $      0.19      $      0.20
                                                        ===========     ===========      ===========

AVERAGE SHARES OUTSTANDING                                5,382,780       1,572,171        6,873,198
                                                        ===========     ===========      ===========
</TABLE>

             See Notes to Pro Forma Condensed Financial Information.




                                       18
<PAGE>   38




                      PRO FORMA CONDENSED INCOME STATEMENT
                      FOR THE YEAR ENDED DECEMBER 31, 1996
                                   (UNAUDITED)
                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<TABLE>
<CAPTION>
                                                                                         LSB AND ONSB
                                                                                          PRO FORMA
                                                             LSB            ONSB         COMBINED (3)
                                                        -----------     -----------      ------------
<S>                                                     <C>             <C>              <C>        
INTEREST INCOME
     Interest and fees on loans                         $    23,104     $     7,468      $    30,572
     Interest and dividends on securities                     6,132           2,329            8,461
     Interest on short-term investments                       1,056              94            1,150
                                                        -----------     -----------      -----------
         Total interest income                               30,292           9,891           40,183
                                                        -----------     -----------      -----------

INTEREST EXPENSE
     Interest on deposits                                    11,776           4,047           15,823
     Interest on short-term borrowed funds                      104              77              181
     Interest on long-term debt                                 272             265              537
                                                        -----------     -----------      -----------
         Total interest expense                              12,152           4,389           16,541
                                                        -----------     -----------      -----------

NET INTEREST INCOME                                          18,140           5,502           23,642
     Provision for loan losses                                  562             243              805
                                                        -----------     -----------      -----------

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES          17,578           5,259           22,837
                                                        -----------     -----------      -----------

NONINTEREST INCOME
     Service charges on deposit accounts                      2,032             525            2,557
     Other noninterest income                                 2,081             194            2,275
                                                        -----------     -----------      -----------
         Total noninterest income                             4,113             719            4,832
                                                        -----------     -----------      -----------

NONINTEREST EXPENSE
     Personnel expense                                        7,656           2,502           10,158
     Occupancy and equipment expense                          1,500             771            2,271
     Other noninterest expense                                4,373           1,284            5,657
                                                        -----------     -----------      -----------
         Total noninterest expense                           13,529           4,557           18,086
                                                        -----------     -----------      -----------

EARNING
     Income before income taxes                               8,162           1,421            9,583
     Income tax expense                                       2,323             395            2,718
                                                        -----------     -----------      -----------

     NET INCOME                                         $     5,839     $     1,026      $     6,865
                                                        ===========     ===========      ===========

PER SHARE
     Net income                                         $      1.08     $      0.65      $      1.00
                                                        ===========     ===========      ===========

AVERAGE SHARES OUTSTANDING                                5,393,813       1,576,623        6,888,452
                                                        ===========     ===========      ===========
</TABLE>

             See Notes to Pro Forma Condensed Financial Information.





                                       19
<PAGE>   39




                      PRO FORMA CONDENSED INCOME STATEMENT
                  FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1995
                                   (UNAUDITED)
                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                        LSB AND ONSB
                                                                                         PRO FORMA
                                                             LSB            ONSB         COMBINED (3)
                                                        -----------     -----------      -----------
<S>                                                     <C>             <C>              <C>        
INTEREST INCOME
     Interest and fees on loans                         $    20,290     $     3,071      $    23,361
     Interest and dividends on securities                     6,695           1,115            7,810
     Interest on short-term investments                       1,066              96            1,162
                                                        -----------     -----------      -----------
         Total interest income                               28,051           4,282           32,333
                                                        -----------     -----------      -----------

INTEREST EXPENSE
     Interest on deposits                                    11,402           1,947           13,349
     Interest on short-term borrowed funds                       46               4               50
     Interest on long-term debt                                  --              27               27
                                                        -----------     -----------      -----------
         Total interest expense                              11,448           1,978           13,426
                                                        -----------     -----------      -----------

NET INTEREST INCOME                                          16,603           2,304           18,907
     Provision for loan losses                                  252             115              367
                                                        -----------     -----------      -----------

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES          16,351           2,189           18,540
                                                        -----------     -----------      -----------

NONINTEREST INCOME
     Service charges on deposit accounts                      1,816             314            2,130
     Other noninterest income                                 1,428              41            1,469
                                                        -----------     -----------      -----------
         Total noninterest income                             3,244             355            3,599
                                                        -----------     -----------      -----------

NONINTEREST EXPENSE
     Personnel expense                                        7,469           1,057            8,526
     Occupancy and equipment expense                          1,444             304            1,748
     Other noninterest expense                                4,199             618            4,817
                                                        -----------     -----------      -----------
         Total noninterest expense                           13,112           1,979           15,091
                                                        -----------     -----------      -----------

EARNINGS
     Income before income taxes                               6,483             565            7,048
     Income tax expense                                       1,701             187            1,888
                                                        -----------     -----------      -----------

NET INCOME                                              $     4,782     $       378      $     5,160
                                                        ===========     ===========      ===========

PER SHARE
     Net income                                         $      0.89     $      0.50      $      0.85
                                                        ===========     ===========      ===========

AVERAGE SHARES OUTSTANDING                                5,365,497         750,659        6,077,122
                                                        ===========     ===========      ===========
</TABLE>

             See Notes to Pro Forma Condensed Financial Information.





                                       20
<PAGE>   40




                      PRO FORMA CONDENSED INCOME STATEMENT
                  FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1994
                                   (UNAUDITED)
                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                                         LSB AND ONSB
                                                                                           PRO FORMA
                                                             LSB           ONSB          COMBINED (3)
                                                        -----------     -----------      ------------
<S>                                                     <C>             <C>              <C>        
INTEREST INCOME
    Interest and fees on loans and leases               $    17,245     $     2,278      $    19,523
    Interest and dividends on securities                      6,205             633            6,838
    Interest on short-term investments                          943              34              977
                                                        -----------     -----------      -----------
        Total interest income                                24,393           2,945           27,338
                                                        -----------     -----------      -----------

INTEREST EXPENSE
    Interest on deposits                                      8,622           1,137            9,759
    Interest on short-term borrowed funds                        73               3               76
    Interest on long-term debt                                   --              23               23
                                                        -----------     -----------      -----------
        Total interest expense                                8,695           1,163            9,858
                                                        -----------     -----------      -----------

NET INTEREST INCOME                                          15,698           1,782           17,480
    Provision for loan and lease losses                         219              63              282
                                                        -----------     -----------      -----------

NET INTEREST  INCOME AFTER PROVISION FOR LOAN AND LEASE      15,479           1,719           17,198
LOSSES
                                                        -----------     -----------      -----------

 NONINTEREST INCOME
    Service charges on deposit accounts                       1,812             230            2,042
    Other noninterest income                                    791              18              809
                                                        -----------     -----------      -----------
        Total noninterest income                              2,603             248            2,851
                                                        -----------     -----------      -----------

NONINTEREST EXPENSE
    Personnel expense                                         6,946             802            7,748
    Occupancy and equipment expense                           1,374             225            1,599
    Other noninterest expense                                 3,878             485            4,363
                                                        -----------     -----------      -----------
        Total noninterest expense                            12,198           1,512           13,710
                                                        -----------     -----------      -----------

EARNINGS
    Income before income taxes                                5,884             455            6,339
    Income tax expense                                        1,422             156            1,578
                                                        -----------     -----------      -----------

    NET INCOME                                          $     4,462     $       299      $     4,761
                                                        ===========     ===========      ===========

PER SHARE                                               $      0.84     $      0.44      $      0.79
                                                        ===========     ===========      ===========
    Net income

AVERAGE SHARES OUTSTANDING                                5,338,545         686,611        5,989,452
                                                        ===========     ===========      ===========
</TABLE>

             See Notes to Pro Forma Condensed Financial Information.





                                       21
<PAGE>   41




               NOTES TO PRO FORMA CONDENSED FINANCIAL INFORMATION


Note 1.  Certain material, nonrecurring adjustments of approximately $900
         thousand (pre-tax) will be recorded in conjunction with the Merger.
         These adjustments include amounts to effect the settlement of
         obligations under existing employment contracts and amounts associated
         with the conversion of ONSB branches. It is estimated that
         approximately $450 thousand of the expenses will be directly related to
         effecting the Merger and therefore will not be deductible for income
         tax purposes. The impact of these adjustments has been reflected in the
         Pro Forma Condensed Balance Sheets as of March 31, 1997, and December
         31, 1996, respectively.

Note 2.  Based on an Exchange Rate of 0.948 for the conversion of ONSB Stock
         into LSB Stock. At March 31, 1997, and December 31, 1996, ONSB had
         1,582,678 and 1,580,978 shares of stock outstanding, respectively.

Note 3.  No pro forma adjustments relating to the Merger are reflected in the
         Pro Forma Condensed Income Statements.

Note 4.  ONSB's weighted average shares outstanding at December 31, 1995 are
         based on 750,659 average shares outstanding adjusted for a 1.922 for
         one stock split paid January 1, 1995 and the acquisition of Piedmont
         BancShares Corporation in exchange for 828,320 shares of ONSB Stock.

Note 5.  ONSB's weighted average shares outstanding at December 31, 1996 are
         based on 1,576,623 average shares outstanding adjusted for the exercise
         of stock options of 8,807 shares.








                                       22
<PAGE>   42




                     COMPARATIVE MARKET PRICES AND DIVIDENDS

         LSB Stock is traded over-the-counter and quoted electronically through
the Nasdaq National Market System under the symbol "LXBK." Shares of ONSB Stock
are traded on the OTC Bulletin Board System under the symbol "ONSB." Stock
quotes are listed in the Charlotte Observer. Scott & Stringfellow,
Interstate/Johnson Lane and Legg Mason Wood Walker, registered broker-dealers,
have been listed as market makers for ONSB Stock. The following table sets
forth, for the indicated periods, (i) the high and low sales prices for LSB
Stock as reported on the Nasdaq National Market System, (ii) the high and low
bid quotations of ONSB Stock, as reported by the Charlotte Observer, and (iii)
the cash dividends declared per share of LSB Stock and ONSB Stock for the
periods indicated. The following quotations reflect inter-dealer prices, without
retail mark-up, mark-down or commission and may not necessarily represent actual
transactions.

   
<TABLE>
<CAPTION>
                                                         LSB

                                                    PRICE RANGE(1)                        CASH DIVIDENDS
                                                    --------------                             PAID
                                               HIGH                LOW                      PER SHARE1
                                               ----                ---                      ----------
<S>                                          <C>                 <C>                          <C>    
1995
First Quarter                                $ 16.00             $ 14.40                      $ 0.095
Second Quarter                                 16.00               14.40                        0.095
Third Quarter                                  16.40               14.60                        0.095
Fourth Quarter                                 16.80               14.80                        0.095

1996
First Quarter                                  15.75               15.25                        0.10
Second Quarter                                 17.00               15.00                        0.10
Third Quarter                                  16.75               15.00                        0.10
Fourth Quarter                                 20.75               14.75                        0.10

1997
First Quarter                                  20.75               18.00                        0.11
Second Quarter through June 27, 1997           21.00               19.00                        0.11
</TABLE>
    
   
<TABLE>
<CAPTION>

                                                       ONSB(2)

                                                     PRICE RANGE                          CASH DIVIDENDS
                                                     -----------                                PAID
                                               HIGH                LOW                       PER SHARE
                                               ----                ---                       ---------
<S>                                          <C>                 <C>                         <C>   
1996
First Quarter                                $ 10.00             $ 9.50                      $   --
Second Quarter                                 10.75              10.00                          --
Third Quarter                                  11.75              10.75                          --
Fourth Quarter                                 14.25              11.75                          --

1997                                                                                             --
First Quarter                                  17.00              14.25                          --
Second Quarter through June 27, 1997           16.75              16.50                          --
</TABLE>
    
- ---------------------------------

(1)  Price and dividend amounts have been adjusted for a five-for-four stock
split that occurred on February 15, 1996.
(2)  Prior to January 1996, an active trading market for ONSB Stock did not
exist and shares traded on an infrequent basis. The following table therefore 
does not include the price range of ONSB Stock prior to that time.




                                       23
<PAGE>   43


                      SPECIAL MEETING OF ONSB SHAREHOLDERS

DATE, PLACE, TIME, AND PURPOSE
   

         This Proxy Statement is being furnished to the holders of ONSB Stock in
connection with the solicitation by the ONSB Board of Directors of proxies for
use at the ONSB Special Meeting at which ONSB shareholders will be asked to vote
upon a proposal to approve the Agreement. The ONSB Special Meeting will be held
at the Holiday Inn Select, 5790 University Parkway, Winston-Salem, North
Carolina, at 9:00 A.M., local time, on Friday, August 1, 1997. See "DESCRIPTION
OF THE MERGER."
    

RECORD DATES, VOTING RIGHTS, REQUIRED VOTES, AND REVOCABILITY OF PROXIES

   
         The close of business on June 26, 1997, has been fixed as the ONSB
Record Date for determining holders of outstanding shares of ONSB Stock entitled
to notice of and to vote at the ONSB Special Meeting. Only holders of ONSB Stock
of record on the books of ONSB at the close of business on the ONSB Record Date
are entitled to notice of and to vote at the ONSB Special Meeting. As of the
ONSB Record Date, 1,582,678 shares of ONSB Stock were issued and outstanding
and held by approximately 1,210 holders of record.
    

         Holders of ONSB Stock are entitled to one vote on each matter
considered and voted upon at the ONSB Special Meeting for each share of ONSB
Stock held of record as of the ONSB Record Date. To hold a vote on any proposal,
a quorum must be assembled, which is a majority of the shares of ONSB Stock
issued and outstanding and entitled to vote, present in person or represented by
proxy. In determining whether a quorum exists at the ONSB Special Meeting for
purposes of all matters to be voted on, all votes "for" or "against," as well as
all abstentions, with respect to the proposal receiving the most such votes,
will be counted. The vote required for the approval of the Agreement is
two-thirds of the shares of ONSB Stock entitled to be cast at the ONSB Special
Meeting by holders of the issued and outstanding shares of ONSB Stock.
Accordingly, with respect to the proposal to approve the Agreement, abstentions
and broker non-votes will be counted as part of the base number of votes to be
used in determining if the proposal has received the requisite number of base
votes for approval. Thus, an abstention and a broker non-vote will have the same
effect as a vote against the proposal.

         Shares of ONSB Stock represented by properly executed proxies, if such
proxies are received in time and not revoked, will be voted in accordance with
the instructions indicated on the proxies. IF NO INSTRUCTIONS ARE INDICATED,
SUCH PROXIES WILL BE VOTED FOR APPROVAL OF THE AGREEMENT AND, IN THE DISCRETION
OF THE PROXY HOLDER, AS TO ANY OTHER MATTER WHICH MAY COME PROPERLY BEFORE THE
ONSB SPECIAL MEETING. IF NECESSARY, THE PROXY HOLDER MAY VOTE IN FAVOR OF A
PROPOSAL TO ADJOURN THE ONSB SPECIAL MEETING IN ORDER TO PERMIT FURTHER
SOLICITATION OF PROXIES IN THE EVENT THERE ARE NOT SUFFICIENT VOTES TO APPROVE
THE FOREGOING PROPOSAL AT THE TIME OF THE ONSB SPECIAL MEETING.

         FAILURE BOTH TO RETURN THE PROXY CARD AND TO VOTE IN PERSON AT THE ONSB
SPECIAL MEETING WILL HAVE THE EFFECT OF A VOTE CAST AGAINST APPROVAL OF THE
AGREEMENT.



                                       24
<PAGE>   44

         An ONSB shareholder who has given a proxy may revoke it at any time
prior to its exercise at the ONSB Special Meeting by (i) giving written notice
of revocation to the Secretary of ONSB, (ii) properly submitting to ONSB a duly
executed proxy bearing a later date or (iii) attending the ONSB Special Meeting
and voting in person. All written notices of revocation and other communications
with respect to revocation of proxies should be addressed as follows: Old North
State Bank, 161 South Stratford Road, Winston-Salem, North Carolina 27104;
Attention: Cathy B. Marion, Secretary.

         As of May 31, 1997, the directors and executive officers of ONSB and
their affiliates were entitled to vote 240,007 shares of ONSB Stock, excluding
options, or approximately 15.2% of the issued and outstanding shares of ONSB
Stock.

SOLICITATION OF PROXIES

   
         Proxies may be solicited by the directors, officers and employees of
ONSB by mail, in person, or by telephone or telegraph. Such persons will receive
no additional compensation for such services. ONSB may also retain the services
of a private firm to solicit proxies on behalf of ONSB, for which ONSB would
pay a fee. ONSB may make arrangements with brokerage firms and other
custodians, nominees, and fiduciaries, if any, for the forwarding of
solicitation materials to the beneficial owners of ONSB Stock held of record by
such persons. Any such brokers, custodians, nominees, and fiduciaries will be
reimbursed for the reasonable out-of-pocket expenses incurred by them for such
services. All expenses associated with the solicitation of proxies, other
expenses associated with the ONSB Special Meeting, and expenses related to the
printing and mailing of this Proxy Statement, will be shared by LSB and ONSB as
provided in the Agreement. See "DESCRIPTION OF THE TRANSACTION--Expenses and
Fees."
    

RECOMMENDATION

         The Board of Directors of ONSB has approved the Agreement and the
Merger contemplated thereby, believes that the proposal to approve the Agreement
is in the best interests of ONSB and its shareholders, and recommends that the
ONSB shareholders vote FOR approval of the proposal to approve the Agreement.

















                                       25
<PAGE>   45


                       SPECIAL MEETING OF LSB SHAREHOLDERS

DATE, PLACE, TIME, AND PURPOSE

   
         This Proxy Statement is being provided to the holders of LSB Stock in
connection with the solicitation by the LSB Board of Directors of proxies for
use at the LSB Special Meeting at which LSB shareholders will be asked to vote
upon a proposal to approve the issuance of shares of LSB Stock in connection
with the Merger. The LSB Special Meeting will be held at the offices of LSB at
One LSB Plaza, Lexington, North Carolina, at 1:00 P.M., local time, on Friday,
August 1, 1997. See "DESCRIPTION OF THE MERGER."
    

RECORD DATES, VOTING RIGHTS, REQUIRED VOTES, AND REVOCABILITY OF PROXIES

         The close of business on June 17, 1997, has been fixed as the LSB
Record Date for determining holders of outstanding shares of LSB Stock entitled
to notice of and to vote at the LSB Special Meeting. Only holders of LSB Stock
of record on the books of LSB at the close of business on the LSB Record Date
are entitled to notice of and to vote at the LSB Special Meeting. As of the LSB
Record Date, 5,405,177 shares of LSB Stock were issued and outstanding and held
by approximately 2,076 holders of record.

         Holders of LSB Stock are entitled to one vote on each matter considered
and voted upon at the LSB Special Meeting for each share of LSB Stock held of
record as of the LSB Record Date. To hold a vote on any proposal, a quorum must
be assembled, which is a majority of the shares of LSB Stock issued and
outstanding and entitled to vote, present in person or represented by proxy. In
determining whether a quorum exists at the LSB Special Meeting for purposes of
all matters to be voted on, all votes "for" or "against," as well as all
abstentions, with respect to the proposal receiving the most such votes, will be
counted. The vote required for the approval of the issuance of shares of LSB
Stock in connection with the Merger is a majority of the total votes cast on the
proposal in person or by proxy at the LSB Special Meeting.

         Shares of LSB Stock represented by properly executed proxies, if such
proxies are received in time and not revoked, will be voted in accordance with
the instructions indicated on the proxies. IF NO INSTRUCTIONS ARE INDICATED,
SUCH PROXIES WILL BE VOTED FOR APPROVAL OF THE ISSUANCE OF SHARES OF LSB STOCK
IN CONNECTION WITH THE MERGER AND, IN THE DISCRETION OF THE PROXY HOLDER, AS TO
ANY OTHER MATTER WHICH MAY COME PROPERLY BEFORE THE LSB SPECIAL MEETING.

         An LSB shareholder who has given a proxy may revoke it at any time
prior to its exercise at the LSB Special Meeting by (i) giving written notice of
revocation to the Secretary of LSB, (ii) properly submitting to LSB a duly
executed proxy bearing a later date or (iii) attending the LSB Special Meeting
and voting in person. All written notices of revocation and other communications
with respect to revocation of proxies should be addressed as follows: LSB
Bancshares, Inc., One LSB Plaza, Lexington, North Carolina 27292; Attention:
Monty J. Oliver, Secretary.

         As of May 31, 1997, the directors and executive officers of LSB and
their affiliates were entitled to vote 224,673 shares of LSB Stock, excluding
options, or approximately 4.2% of the issued and outstanding shares of LSB
Stock. In addition, at May 31, 1997, the LSB Bank Trust Department held
approximately 176,556 shares, or 3.3%, of the then outstanding shares of LSB
Stock.




                                       26
<PAGE>   46

SOLICITATION OF PROXIES

         Proxies may be solicited by the directors, officers and employees of
LSB by mail, in person, or by telephone or telegraph. Such persons will receive
no additional compensation for such services. LSB may make arrangements with
brokerage firms and other custodians, nominees, and fiduciaries, if any, for the
forwarding of solicitation materials to the beneficial owners of LSB Stock held
of record by such persons. Any such brokers, custodians, nominees, and
fiduciaries will be reimbursed for the reasonable out-of-pocket expenses
incurred by them for such services. All expenses associated with the
solicitation of proxies, other expenses associated with the LSB Special Meeting,
and expenses related to the printing and mailing of this Proxy Statement, will
be shared by LSB and ONSB as provided in the Agreement. See "DESCRIPTION OF THE
TRANSACTION--Expenses and Fees."

RECOMMENDATION

         The Board of Directors of LSB has approved the Agreement, the Merger
contemplated thereby, and the related issuance of shares of LSB Stock. The LSB
Board of Directors believes that the proposal to approve the issuance of shares
of LSB Stock in connection with the Merger is in the best interests of LSB and
its shareholders, and recommends that the LSB shareholders vote FOR approval of
the proposal to approve the issuance of shares of LSB Stock in connection with
the Merger.



















                                       27
<PAGE>   47
                                      
                          DESCRIPTION OF THE MERGER

         THE FOLLOWING INFORMATION DESCRIBES CERTAIN ASPECTS OF THE MERGER. THIS
DESCRIPTION DOES NOT PURPORT TO BE COMPLETE AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO THE APPENDICES HERETO, INCLUDING THE AGREEMENT, WHICH IS ATTACHED
AS APPENDIX A TO THIS PROXY STATEMENT AND INCORPORATED HEREIN BY REFERENCE. ALL
SHAREHOLDERS ARE URGED TO READ THE APPENDICES IN THEIR ENTIRETY.

GENERAL

         The Agreement provides for the acquisition of ONSB by LSB pursuant to
the merger of ONSB with and into LSB Bank. At the Effective Time, each share of
ONSB Stock then issued and outstanding (excluding shares held by ONSB, LSB, or
their respective subsidiaries, in each case other than shares held in a
fiduciary capacity or in satisfaction of debts previously contracted, and
excluding shares held by shareholders who perfect their statutory rights of
appraisal) will be converted into and exchanged for 0.948 of a share of LSB
Stock, subject to adjustment as described below.

         No fractional shares of LSB Stock will be issued. Rather, cash (without
interest) will be paid in lieu of any fractional share interest to which any
ONSB shareholder would be entitled upon consummation of the Merger, in an amount
equal to such fractional part of a share of LSB Stock multiplied by the market
value of one share of LSB Stock at the Effective Time. The market value of one
share of LSB Stock at the Effective Time shall be the Average Closing Price.

         As of the ONSB Record Date, ONSB had 1,582,678 shares of ONSB Stock
issued and outstanding and 151,636 additional shares of ONSB Stock subject to
ONSB Options and ONSB Warrants. Assuming the Exchange Rate of 0.948 of a share
of LSB Stock for each share of ONSB Stock, it is anticipated that upon
consummation of the Merger, LSB would issue approximately 1,500,379 shares of
LSB Stock, excluding shares subject to assumed warrants and options.
Accordingly, LSB would then have issued and outstanding approximately 6,905,556
shares of LSB Stock based on the number of shares of LSB Stock issued and
outstanding on the LSB Record Date.

POSSIBLE ADJUSTMENT OF EXCHANGE RATE

         At the time of negotiation of the Agreement, it was the agreement of
the parties that in connection with the Merger ONSB shareholders would receive
LSB Stock with an equivalent dollar value (which equals the market price of LSB
Stock multiplied by the Exchange Rate) of $18.96 per share of ONSB Stock,
assuming a market value of LSB Stock of $20.00. Because the market price of LSB
Stock is subject to change between the date of execution of the Agreement and
consummation of the Merger, however, the parties agreed that they would share
the risk of such change by adjusting the equivalent per share dollar value
received by ONSB shareholders to the extent of changes in the market price of
LSB Stock. The ONSB shareholders would receive a higher equivalent per share
dollar value if the market price of LSB Stock was higher at the time of
consummation of the Merger than at the time the Agreement was executed, and
would receive a lower equivalent per share dollar value if the market price of
LSB Stock was lower at the time of consummation of the merger than at the time
of execution of the Agreement. The Agreement therefore provides that if the
Average Closing Price of LSB Stock is between $20.00 and $24.00, the Exchange
Rate will be adjusted in accordance with a formula set forth




                                       28
<PAGE>   48

in the Agreement so that the dollar value of LSB Stock received by ONSB
shareholders will range from $18.96 to $19.59, respectively, per share of ONSB
Stock. If the Average Closing Price of LSB Stock is between $15.00 and $20.00,
the Exchange Rate will be adjusted in accordance with another formula set forth
in the Agreement so that the dollar value of LSB Stock received by ONSB
shareholders will range from $15.80 to $18.96, respectively, per share of ONSB
Stock.

         The "Average Closing Price" is defined in the Agreement as the average
of the daily closing sale prices of LSB Stock on the Nasdaq National Market
System (as reported by The Wall Street Journal or, if not reported thereby,
another authoritative source as selected by LSB) for the 15 consecutive trading
days immediately preceding the ten-day period ending on the Closing Date. If the
Average Closing Price of LSB Stock is greater than $24.00 or less than $15.00,
the Board of Directors of both LSB and ONSB each has the right to terminate the
Agreement. If the Average Closing Price of LSB Stock is greater than $24.00 or
less than $15.00 and the Agreement is not terminated, the Exchange Rate will be
adjusted in accordance with the same formulas used to adjust the Exchange Rate
when the Average Closing Price is between $15.00 and $24.00. Those formulas are
set forth in Section 3.1 of the Agreement, which is attached as Appendix A to
this Proxy Statement/Prospectus.

   
         The Average Closing Price as calculated for the period ending June 26,
1997 was $19.73. The Exchange Rate therefore would have been adjusted to 0.952,
which would have yielded an equivalent dollar value to ONSB shareholders of
$18.80 per share of ONSB Stock based on the closing price of LSB Stock on 
June 26, 1997 of $19.75 per share.
    

         ONSB shareholders should be aware that the actual market value of a
share of LSB Stock at the Effective Time and at the time certificates for those
shares are delivered following surrender and exchange of certificates for shares
of ONSB Stock may be more or less than the Average Closing Price. ONSB
shareholders are urged to obtain information on the trading value of LSB Stock
that is more recent than that provided in this Proxy Statement. See "COMPARATIVE
MARKET PRICES AND DIVIDENDS."

EFFECT OF THE MERGER ON STOCK OPTIONS AND WARRANTS

         The Agreement contemplates that at the Effective Time, each ONSB Option
granted by ONSB under the 1990 Incentive Stock Option Plan of Old North State
Bank and the 1989 Employee Stock Option Plan of Piedmont BancShares Corporation
(which ONSB assumed in connection with its merger with Piedmont BancShares
Corporation in December 1995) (collectively, the "ONSB Stock Plans") and each
ONSB Warrant, which are outstanding at the Effective Time, whether or not
exercisable, will be converted into and become rights with respect to LSB
Stock, and LSB will assume each ONSB Option, in accordance with the terms of the
ONSB Stock Plans and stock option agreement by which it is evidenced, and each
ONSB Warrant, except that from and after the Effective Time, (i) LSB and its
Compensation Committee will be substituted for ONSB and the Committee of ONSB's
Board of Directors (including, if applicable, the entire Board of Directors of
ONSB) administering such ONSB Stock Plans and ONSB Warrants, (ii) each ONSB
Option and ONSB Warrant assumed by LSB may be exercised solely for shares of LSB
Stock, (iii) the number of shares of LSB Stock subject to such ONSB Option or
ONSB Warrant will be equal to the number of shares of ONSB Stock subject to such
ONSB Option or ONSB Warrant immediately prior to the Effective Time multiplied
by the Exchange Rate, and (iv) the per share exercise price under each such ONSB
Option or ONSB Warrant will be adjusted by dividing the per share exercise price
under each such ONSB Option or ONSB Warrant by the Exchange Rate and rounding up
to the nearest cent. Notwithstanding the provisions of clause (iii) of the
preceding sentence, LSB will not be obligated to issue any fraction of a share
of LSB Stock upon exercise of 



                                       29
<PAGE>   49

ONSB Options or ONSB Warrants and any fraction of a share of LSB Stock that
otherwise would be subject to a converted ONSB Option or ONSB Warrant will
represent the right to receive a cash payment equal to the product of such
fraction and the difference between the market value of one share of LSB Stock
at the time of exercise and the per share exercise price of such option or
warrant. The market value of one share of LSB Stock at the time of exercise will
be the closing price of LSB Stock on the Nasdaq National Market System (as
reported by The Wall Street Journal or, if not reported thereby, any other
authoritative source selected by LSB) on the last trading day preceding the date
of exercise. In addition, notwithstanding any other term in the Agreement, each
ONSB Option which is an "incentive stock option" will be adjusted as required by
Section 424 of the Code so as not to constitute a modification, extension, or
renewal of the option, within the meaning of Section 424(h) of the Code.


BACKGROUND OF AND REASONS FOR THE MERGER

         ONSB BACKGROUND. In October 1996, the ONSB Board of Directors, in
conjunction with management and as part of its strategic planning, began
analyzing ONSB's historical and anticipated results of operations, its markets
and prospects for growth, its ability to consummate acquisitions of other
financial institutions, its ability to respond to increasing competitive
pressures, near-term economic factors and the possibility of a decline in the
valuation by capital markets of commercial banks generally having the size and
other characteristics of ONSB, in order to determine the most effective means of
enhancing shareholder value. After careful consideration of all relevant
factors, the ONSB Board of Directors decided to solicit indications of interest
in the acquisition of ONSB from five selected compatible community banks
headquartered within a one hundred mile radius of Winston-Salem, including LSB.
Management was instructed to compile a confidential information memorandum and
submit it to the selected financial institutions with a request for an
indication of interest to be received by late November.

   
         In response to ONSB's solicitation of interest, three institutions
expressed interest, and their written proposals were shared with ONSB's
accounting advisors and Scott & Stringfellow, the financial advisor of the ONSB
Board of Directors. In December 1996, senior executives from the three
potential acquirers made presentations to the ONSB Board of Directors and its
financial advisor. The ONSB Board of Directors subsequently met with its
accounting and financial advisors to evaluate the three proposals. Each of the
offers was for an exchange of stock, and in each case the acquiring
institution's stock paid an established quarterly cash dividend. Two of the
potential acquirers' stocks were listed on the Nasdaq National Market System
and the third was traded on the OTC Bulletin Board. One of the offers was
rejected because of its proposed treatment of ONSB Options and ONSB Warrants,
which would have reduced the value received by the ONSB shareholders. The two
remaining offers were then compared using historical stock trading volumes,
cash dividends and internal operating statistics, including net interest
margins, efficiency ratios, returns on average assets and returns on average
equity. In addition, the ONSB Board of Directors considered the market value of
the securities offered in the competing proposals, which was higher in the LSB
offer, and the close geographic proximity of the LSB offices to existing ONSB
locations to be an advantage, affording greater opportunities for synergies in
serving banking customers with better products and convenience. Based on these
factors, the ONSB Board of Directors decided that the LSB offer was superior to
the other two. After a thorough discussion of the merits of each offer and
following the recommendation of the ONSB Board of Director's financial advisor,
the ONSB Board of Directors instructed management to negotiate a merger
agreement with LSB according to the terms proposed by LSB. On January 20, 1997,
ONSB executed a letter of intent and option agreement with LSB, which was
announced to regulatory authorities on January 21, 1997, and to the public
through a joint news release on January 22, 1997. Additional discussions and
negotiations with LSB, in consultation with the ONSB
    




                                       30
<PAGE>   50

Board of Director's financial, accounting and legal advisors, resulted in the
signing on March 14, 1997 of a definitive agreement to merge ONSB into LSB Bank.

         ONSB REASONS FOR THE MERGER. A number of factors were considered by the
ONSB Board of Directors in approving the terms of the Merger, including, without
limitation, information concerning the financial condition, results of
operations and prospects of LSB, LSB Bank and ONSB; the ability of the combined
entity to compete in the relevant banking market; the market price of ONSB
Stock; the anticipated tax-free nature of the Merger to ONSB and its
shareholders for federal income tax purposes; the financial terms of other
business combinations in the banking industry; and certain non-financial
factors. The ONSB Board of Directors concluded that the Merger with LSB Bank
would be in the best interests of the ONSB shareholders because it would 
further the ONSB Board of Director's long-term business strategy to enhance
shareholder value by increasing earnings, broadening product lines, expanding
distribution and diversifying geographically, all without sacrificing asset
quality. Of particular significance to the ONSB Board of Directors in deciding
to proceed with the Merger were the financial terms of the Merger, including
the Exchange Rate and the history of cash dividends paid by LSB, the future
prospects for the combined institution, financial and otherwise; and other
factors that the ONSB Board of Directors believed could have a favorable impact
on financial performance and long-term shareholder value.

         In weighing the various considerations with respect to the Merger, the
primary goals of the ONSB Board of Directors were to realize a gain in
shareholder value and provide additional liquidity for shareholders. Following
are the material factors considered by the Board of Directors with respect to 
the Merger:

                  (i)   financial and philosophical considerations, including 
         (a) the business, operations, earnings and financial condition,
         including the capital levels and asset quality, of LSB Bank on an
         historical, prospective and pro forma basis; (b) product overlap
         between ONSB and LSB Bank; (c) the compatibility of corporate goals,
         systems and organizations and the respective contributions each party
         would make to a combined entity; (d) the potential for enhanced
         shareholder value through increased deposit market share in the Triad
         area of North Carolina; (e) the enhanced opportunities for growth that
         the Merger would make possible as a result of the increased
         capitalization of the combined entity; (f) the opportunities for cost
         savings and synergies expected to result from the Merger; and (g) the
         ability, as a larger financial institution, to invest in more
         sophisticated technology to serve the needs of its customers;

                  (ii)  the terms of the Agreement, including the Exchange Rate.
         In deciding to approve and recommend the terms of the Merger, the ONSB
         Board of Directors considered the Exchange Rate in relation to (a) the
         respective book values and earnings per share of ONSB Stock and LSB
         Stock, and (b) the expected trading range of the stock of the two
         companies on a combined basis;

                  (iii) the financial advice rendered by Scott & Stringfellow
         regarding the terms of the Agreement. In considering such financial
         advice, the ONSB Board of Directors reviewed the methodology and
         appropriateness of the assumptions used by Scott & Stringfellow in its
         analysis of the fairness of the transaction;

                  (iv)  the  expectation  that the Merger would be tax-free for 
         federal income tax purposes to ONSB and its shareholders;



                                       31
<PAGE>   51

                 (v)   the current and prospective economic environment facing 
         financial institutions generally and ONSB in particular;

                 (vi)  the belief of the ONSB Board of Directors that annuities,
         mutual funds and life insurance products currently sold through a
         subsidiary of ONSB could be sold in greater volume through a three 
         county branch network; and

                 (vii) the combination of officers from both of the parties in
         the surviving bank and the representation of ONSB on the Board of
         Directors and committees thereof of the surviving bank.

         The ONSB Board of Directors believes that each of ONSB and LSB
currently is well-managed and possesses management philosophies and a strategic
focus that are compatible with those of the other, and that each institution
would contribute complementary business strengths resulting in a
well-diversified combined institution. In addition, both ONSB and LSB Bank are
considered "well-capitalized" under banking regulatory standards and the strong
capitalization of the combined entity should allow it to take advantage of
future opportunities that otherwise might not be available to either institution
individually. The ONSB Board of Directors also believes that the Merger will
enhance the ability of the combined institution to compete effectively in the
rapidly changing marketplace for banking and financial services and to take
advantage of opportunities for growth and diversification that might not be
otherwise available. There can be no assurance, however, that the results
anticipated by the ONSB Board of Directors in approving the Merger will be
achieved.

         For a discussion of the ownership of ONSB Stock by the Board of
Directors and executive officers of ONSB, see "INFORMATION ABOUT ONSB--Security
Ownership of Management."

         ONSB'S BOARD OF DIRECTORS RECOMMENDS THAT ONSB SHAREHOLDERS VOTE FOR
APPROVAL OF THE AGREEMENT.







                                       32
<PAGE>   52

         LSB BACKGROUND. The Board of Directors of LSB adopted a strategic plan
in November 1996, one directive of which is to evaluate appropriate
opportunities to acquire other financial institutions. In November 1996, LSB
received a confidential information memorandum soliciting LSB's interest in an
affiliation/acquisition transaction with ONSB. Upon its receipt of ONSB's
confidential information memorandum, LSB selected the Carson Medlin investment
banking firm to assist LSB in exploring the acquisition transaction with ONSB.
In response to ONSB's solicitation of interest, the LSB Board of Directors
approved a summary term sheet with respect to an offer to acquire ONSB. The
summary term sheet specifically addressed the following items: the proposed
form of transaction, including exchange rate; whether the ONSB Options and
ONSB Warrants would be converted; plans for ONSB executives covered by
employment contracts and severance agreements who would be adversely affected
by the transaction; and the estimated schedule for closing the transaction.
The amount of consideration that LSB proposed to pay ONSB shareholders as set
forth in the summary term sheet had been approved by LSB's Board of Directors
at its meeting on November 25, 1996, after a presentation by Carson Medlin of
various structures to accomplish the acquisition of ONSB and comparisons to
recent merger transactions among other North Carolina community banks. The
presentation included analyses of the anticipated effects of various structures
and purchase prices on LSB's estimated future performance, both on an aggregate
and per share basis. The summary term sheet was presented to ONSB soon
thereafter.

   
         After ONSB's receipt of LSB's summary term sheet, but prior to any
public announcement of the Merger, the market price of LSB Stock increased from
approximately $15 per share to $20 per share. As a result, ONSB proposed to 
LSB that LSB increase its proposed purchase price for all outstanding shares
of ONSB Stock from approximately $25 million (on a primary share basis), which
was reflected in the summary term sheet, to approximately $30 million (on a
primary share basis).

         On December 31, 1996, LSB delivered to ONSB a draft letter of intent,
together with a draft option agreement, to acquire ONSB. The draft letter
of intent included the $30 million purchase price (assuming an Average Closing
Price of LSB Stock of $20) proposed by ONSB. LSB and ONSB continued to 
negotiate the following issues: ONSB's right to select representatives for
election to LSB's Board of Directors; treatment of ONSB's senior management
employment contracts and severance arrangements; treatment of other ONSB
employees adversely affected by the Merger; the parties' right to terminate the
Agreement in the event that the market price of LSB Stock fell below a certain
price; the amount of break-up fee in the event that ONSB entered into a
strategic relationship with a third party after entering into a letter of
intent with LSB; and the number of shares of ONSB Stock that would be subject
to a lock-up option issued by ONSB to LSB and the exercise price related
thereto. 
    

         On January 20, 1997, LSB and ONSB executed a letter of intent and the 
Option Agreement. The consideration to be paid to ONSB shareholders as 
reflected in the letter of intent had been approved by LSB's Board of 
Directors at its meeting on December 30, 1996, after another presentation by 
Carson Medlin, which included analyses of the changes in the Exchange Rate as 
a result of changes in the market price of LSB Stock on the amount of the
aggregate purchase price for ONSB and the number of shares of LSB Stock to be
issued in connection therewith, and the corresponding estimated effect on LSB's
estimated future performance, both on an aggregate and per share basis.



                                       33
<PAGE>   53

   
         On January 30, 1997, LSB presented to ONSB an initial draft of the 
Agreement, which contained the terms reflected in the letter of intent
previously executed by the parties. Management of LSB and ONSB undertook
negotiations and agreed upon mutually acceptable modifications to the
Agreement. On March 11, 1997, LSB's and LSB Bank's Boards of Directors,
together with management, reviewed and considered the provisions of the
proposed Agreement after consulting with LSB's advisors. After a review of the
Agreement and based on their prior analyses and conclusions, the advice of
legal counsel, and the advice of Carson Medlin, the Boards of Directors of LSB
and LSB Bank concluded that a combination of ONSB and LSB, upon the general
terms set forth in the proposed Agreement, would be in the best interests of
LSB, LSB Bank and LSB's shareholders. The Boards of Directors of LSB and LSB
Bank approved and authorized the Agreement on March 11, 1997.
    

         On March 14, 1997, the ONSB Board of Directors, together with
management, reviewed and considered the provisions of the proposed Agreement
after consulting with ONSB's advisors. After a review of the Agreement and based
on its prior analyses and conclusions, the advice of legal counsel, and the
advice of Scott & Stringfellow, the Board of Directors concluded that a
combination of ONSB and LSB, upon the general terms set forth in the proposed
Agreement, would be in the best interests of ONSB and its shareholders. On March
14, 1997, LSB, LSB Bank and ONSB entered into the Agreement.

         LSB REASONS FOR THE MERGER. The LSB Board of Directors, as part of its
long-range strategic plan to increase shareholder value, has sought growth in
LSB's business by expanding its geographic markets and increasing presence in
its existing markets. LSB's Board of Directors believes that the acquisition of
profitable, well-managed financial institutions is an effective mean of
expanding LSB's markets and market presence. The LSB Board of Directors has
concluded that the acquisition of ONSB would be consistent with LSB's strategic
plan because ONSB is profitable and adds complementary geographic markets. ONSB
currently operates seven banking offices in the counties of Forsyth and Stokes,
North Carolina, which are contiguous to Davidson County, North Carolina, in
which LSB Bank currently operates 14 banking offices. In addition, LSB's Board
of Directors believes opportunities exist to reduce certain operating costs
subsequent to the Merger as a result of economies of scale and elimination of
certain duplicate functions. There can be no assurance, however, that such
reductions in operating costs will be achieved, or that the results anticipated
by the LSB Board of Directors in approving the Merger will be achieved.

         The additional material factors considered by the LSB Board of
Directors in approving the Agreement and the Merger were:

                  (i)   the information presented to the directors by the
         management of LSB concerning the business, operations, earnings, asset
         quality, and financial condition of ONSB, including the composition of
         the earning assets portfolio of ONSB;

                  (ii)  the financial terms of the Merger, including the
         relationship of the value of the consideration issuable in the Merger
         to the market value, tangible book value, and earnings per share of
         ONSB Stock;

                  (iii) the financial terms of the Merger, including the
         treatment of the Merger as a tax-free exchange of ONSB Stock for LSB
         Stock for federal income tax purposes;



                                       34
<PAGE>   54

                  (iv)     the likelihood of the Merger being approved by
         applicable regulatory authorities without undue conditions or delay;

                  (v)      the opportunity for reducing the noninterest expense
         of the operations of ONSB and the ability of the operations of ONSB
         after the Effective Time to contribute to the earnings of LSB through
         its existing products and services and additional services offered by
         LSB;

                  (vi)     the attractiveness of the ONSB franchise, the market
         position of ONSB in each of the markets in which it operates and the
         compatibility of the franchise of ONSB with the operations of LSB in
         the Piedmont area of the North Carolina economy;

                  (vii)    the compatibility of the community bank orientation
         of the operations of ONSB with that of LSB; and

                  (viii)   the financial advice rendered by Carson Medlin.

The LSB Board of Directors did not quantify or otherwise attempt to assign
relative or specific weights to the factors considered by the Board in
determining that the Merger is in the best interests of LSB shareholders.

         Based upon the factors discussed above, including the presentations of
Carson Medlin discussed above, the LSB Board of Directors determined that the
consideration to be paid to the shareholders of ONSB in connection with the
Merger is fair to LSB and its shareholders.

         LSB'S BOARD OF DIRECTORS RECOMMENDS THAT LSB SHAREHOLDERS VOTE FOR
APPROVAL OF THE ISSUANCE OF SHARES OF LSB STOCK IN CONNECTION WITH THE MERGER.

OPINION OF ONSB'S FINANCIAL ADVISOR

         GENERAL. The ONSB Board of Directors retained Scott & Stringfellow to
act as its financial advisor in connection with rendering a fairness opinion
with respect to the Merger. Scott & Stringfellow is a full service investment
banking and brokerage firm headquartered in Richmond, Virginia that provides a
broad array of services to corporations, financial institutions, individuals and
state and local governments. The Financial Institutions Group of Scott &
Stringfellow actively works with financial institutions in North Carolina,
Virginia, the District of Columbia, Maryland and West Virginia on these and
other matters. As part of its investment banking practice, it is continuously
engaged in the valuation of financial institutions and their securities in
connection with mergers and acquisitions, negotiated underwritings and secondary
distributions of listed and unlisted securities. Scott & Stringfellow was
selected by ONSB's Board of Directors based upon its expertise and reputation in
providing valuation and merger and acquisition and advisory services to
financial institutions.

         At a meeting held on March 14, 1997, the ONSB Board of Directors
approved and adopted the Agreement. At that meeting, Scott & Stringfellow
delivered an opinion to the ONSB Board of Directors that as of such date the
Exchange Rate, which is used to calculate the consideration to be received by



                                       35
<PAGE>   55

ONSB shareholders in the form of LSB Stock or in cash (subject to limitations on
the cash component of the consideration), was fair to the ONSB shareholders from
a financial point of view. Scott & Stringfellow's opinion was updated as of the
date of this Proxy Statement. No instructions or limitations were given or
imposed by the ONSB Board of Directors upon Scott & Stringfellow with respect to
the investigation made or procedures followed by Scott & Stringfellow in
rendering the opinion.

         The full text of Scott & Stringfellow's opinion, which sets forth the
assumptions made, matters considered and limits on the review undertaken by
Scott & Stringfellow, is set forth and attached hereto as Appendix C. ONSB
shareholders are urged to read the opinion in its entirety. The following is a
summary of certain analyses performed by Scott & Stringfellow that were the
basis of its opinion.

   
         Scott & Stringfellow has rendered its opinion to the Board of Directors
of ONSB that the terms of the Agreement are fair from a financial point of view.
In developing its opinion, Scott & Stringfellow reviewed and analyzed: (1) the
Agreement; (2) the Form S-4 Registration Statement to be filed with the SEC in
connection with the Merger; (3) ONSB's audited financial statements, Annual
Reports on Form 10-KSB, and annual Proxy Statements to shareholders for the
three years ended December 31, 1996; (4) unaudited financial statements for the
quarters ended March 31, 1996 and 1997 and other financial and non-financial
internal information relating to ONSB prepared by ONSB's management; 
(5) information regarding the trading markets for ONSB Stock and LSB Stock and
the price ranges within which the respective stocks have traded; (6) the
relationship of prices paid to relevant financial data, such as net worth,
earnings, deposits, and assets, in certain bank and bank holding company
mergers and acquisitions in North Carolina in recent years; (7) LSB's annual
reports to shareholders and its financial statements, Annual Reports on Form
10-K, and annual Proxy Statements to shareholders for the three years ended
December 31, 1996; (8) unaudited financial statements for the quarters ended
March 31, 1996 and 1997 and other financial and non-financial internal
information relating to LSB prepared by LSB's management, including but not
limited to asset quality, reserve adequacy, margin analysis, interest rate
sensitivity, internal controls, loan policies, budgets, regulatory matters and
legal matters; and (9) such other financial studies, analyses, inquiries and
other matters as Scott & Stringfellow deemed necessary. Scott & Stringfellow
has discussed with members of ONSB's and LSB's management past and current
business operations, prospects for the future, the background of the Merger,
the reasons and basis for the Merger, results of regulatory examinations, and
the business and future prospects of ONSB and LSB individually and as a
combined entity, as well as other matters relevant to its inquiry. Scott &
Stringfellow has conducted such other studies, analyses and investigations,
particularly of the banking industry, and considered such other information as
it deemed appropriate, the material portion of which is described below. Scott
& Stringfellow also took into account its assessment of general economic,
market and financial conditions and its expertise in other transactions, as
well as its experience in securities valuations and knowledge of the commercial
banking industry generally.
    

         Scott & Stringfellow relied without independent verification upon the
accuracy and completeness of all of the financial and other information reviewed
by it and conducted discussions with management of ONSB and LSB for purposes of
developing its opinion. With respect to financial forecasts reviewed by Scott &
Stringfellow for purposes of developing its opinion, Scott & Stringfellow
assumed that such financial forecasts were reasonably prepared on the basis
reflecting the best currently available estimates and judgment of the management
of ONSB and LSB as to the future financial performance of ONSB and LSB,
respectively. Any estimates contained in Scott & Stringfellow's analyses are not
necessarily indicative of future results or values, nor do they purport to be
appraisals or reflect prices at which securities could actually be bought or
sold. Scott & Stringfellow is not an expert in the evaluation of 





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<PAGE>   56

loan portfolios or allowances for loans losses with respect thereto and has
assumed without independent verification that such allowances for ONSB and LSB
are adequate to cover such losses. In addition, Scott & Stringfellow has not
reviewed individual credit files nor did it make an independent evaluation or
appraisal of the assets or liabilities of ONSB or LSB or any of their
subsidiaries nor was it furnished with any such appraisal. Scott and
Stringfellow's Opinion is directed to the Board of Directors of ONSB and does
not constitute a recommendation to any shareholders of ONSB as to how such
shareholder should vote with respect to the Merger.

         Scott & Stringfellow used the information gathered to evaluate the
financial terms of the Merger using standard valuation methods, including a
discounted cash flow analysis, a comparable acquisition analysis, a peer group
market comparable analysis, and a dilution analysis.

         DISCOUNTED CASH FLOW ANALYSIS. Scott & Stringfellow performed a
discounted cash flow analysis under various projections to estimate the fair
market value of the ONSB Stock. Among other things, Scott & Stringfellow
considered a range of asset and earnings growth for ONSB of between 6.0% and
10.0% and a required equity capital level of 8.0%. A range of discount rates
from 11.2% to 13.2% was applied to the cash flows resulting from the projections
during the first five years and residual values. The residual values were
estimated by capitalizing the projected final year earnings by the discount
rates less the projected long-term growth rate of the ONSB's earnings. The
discount rates, growth rates and capital levels were chosen based on what Scott
& Stringfellow, in its judgment, considered appropriate, considering, among
other things, ONSB's past and current financial performance and condition, the
general level of inflation, rates of return for fixed income and equity
securities in the market generally and particularly in the banking industry. The
discounted cash flow analysis indicated a reference range of $8.17 to $13.73 per
share of ONSB Stock. These values compare to the value of $18.96 of
consideration share of ONSB Stock pursuant to the Exchange Rate. Accordingly,
the present value of the ONSB Stock was calculated at less than the value of the
consideration to be received from LSB pursuant to the Agreement.

         COMPARABLE ACQUISITION ANALYSIS. Scott & Stringfellow compared the
relationship of prices paid to relevant financial data, such as net worth,
tangible net worth, earnings, deposits, assets, and tangible book premium to
core deposits, in 15 bank and bank holding company mergers and acquisitions in
North Carolina since June 30, 1994, representing all such transactions known to
Scott & Stringfellow to have occurred during this period, with the proposed ONSB
Merger and found the consideration to be received from LSB to be within the
relevant pricing ranges acceptable for such recent transactions. Specifically,
based upon the most recent transactions announced in North Carolina since June
30, 1994, excluding the ONSB Merger, the average price to book value ratio in
those transactions was 2.29, compared to 2.68 for the ONSB Merger; the average
price to tangible book value ratio was 2.37, compared to 2.85 for the ONSB
Merger; the average price to earnings ratio was 22. 58, compared to 29.24 for
the ONSB Merger; the average price to assets was 22.64%, compared to 23.03% for
the ONSB Merger; and the average tangible book premium to core deposits was
17.29%, compared to 32.34% for the ONSB Merger. For purposes of computing the
information with respect to the ONSB Merger, $18.96 per share consideration for
each share of ONSB Stock was used.

   
         PEER GROUP MARKET COMPARABLE ANALYSIS. Scott & Stringfellow analyzed
the performance and financial condition of LSB relative to the North Carolina
Bank Group (the "Bank Group"), which includes the following financial
institutions: First Bancorp, First Charter
    



                                       37
<PAGE>   57

   
Corporation, FNB Financial Services Corporation, FNB Corporation, Bank of
Granite Corporation, Peoples Bank, and Triangle Bancorp, Inc. Among the
financial information compared was information relating to tangible equity to
assets, loans to deposits, net interest margin, non-performing assets, total
assets, reserves to non-performing assets, and efficiency ratio. Additional
valuation information compared for the trailing twelve-month period ended March
31, 1997 was: (i) price to book value ratio, which was 2.0 for LSB, compared to
an average of 2.2 for the Bank Group; (ii) price to trailing earnings ratio,
which was 16.7 for LSB, compared to an average of 17.9 for the Bank Group; 
(iii) return on average assets, which was 1.58% for LSB, compared to an average
of 1.40% for the Bank Group; (iv) return on average equity, which was 12.74%
for LSB, compared to an average of 13.71% for the Bank Group; and (v) a
dividend yield of 2.21% for LSB, compared to an average of 2.05% for the Bank
Group. For purposes of calculating the average for the Bank Group, Scott &
Stringfellow excluded the high and low data points. Overall, in the opinion of
Scott & Stringfellow, LSB's operating performance and financial condition were
slightly better than the Bank Group average and LSB's market value was
reasonable when compared to the Bank Group. Accordingly, ONSB shareholders will
receive LSB Stock that is reasonably valued when compared to the Bank Group.

         DILUTION ANALYSIS. Based upon publicly available financial information
on 1996 performance of ONSB and LSB, Scott & Stringfellow considered the effect
of the transaction on the book value, earnings, and market value of ONSB and
LSB assuming an Average Closing Price of $20.00 per share of LSB Stock. The 
immediate effect on LSB, assuming $455,000 (or 15.1% of the last twelve months
non-interest expense preceding the announcement of the Merger) of cost savings 
of ONSB's non-interest expense, was to decrease earnings for the twelve months
ended March 31, 1997 by $0.04 per share, or 3.34%, and to decrease March 31,
1997 book value by $0.47 per share,  or 4.84%. The effect on ONSB under the
same assumption is to increase reported earnings $0.42 per share, or 63.19%, to
increase book value by $1.61 per share, or 22.46%, to receive dividends of
$0.42 per share, when historically no dividends have been paid by ONSB, and to
increase the pre-announcement market value of ONSB Stock by $5.52 per share to
$18.96 per share. This dilution analysis does not take into account the longer
term benefits for the combined companies resulting from the combination. Scott
& Stringfellow concluded from this analysis that the transaction would have a
positive effect on ONSB and the ONSB shareholders in that net income per share,
book value per share, dividends per share and market value per share of LSB
Stock to be received by the ONSB shareholders, after giving effect to the
Exchange Rate, would represent a substantial increase in each of these factors.
    

         The summary set forth above includes the material factors considered,
but does not purport to be a complete description of the presentation by Scott &
Stringfellow to the ONSB Board of Directors or of the analyses performed by
Scott & Stringfellow. The preparation of a fairness opinion involves various
determinations as to the most appropriate and relevant methods of financial
analysis and the application of those methods to the particular circumstances,
and, therefore, such an opinion is not readily susceptible to partial analysis
or summary description. Accordingly, notwithstanding the separate factors
summarized above, Scott & Stringfellow believes that its analysis must be
considered as a whole and that selecting portions of its analyses and the
factors considered by it, without considering all analyses and factors, would
create an incomplete view of the process underlying the preparation of Scott &
Stringfellow's opinion. As a whole, these various analyses contributed to Scott
& Stringfellow's opinion that the terms of the Agreement are fair from a
financial point of view to the ONSB shareholders.

         Pursuant to an engagement letter dated January 2, 1997 between ONSB and
Scott & Stringfellow, in exchange for its services, Scott & Stringfellow will
receive a fee of $35,000, which is




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<PAGE>   58

payable at closing, will be indemnified against certain liabilities, and will be
reimbursed for up to $2,000 of out-of-pocket expenses. Scott & Stringfellow has
worked with ONSB on various projects in the past for which it was compensated on
an hourly basis and a fixed fee for service basis. During the last two years,
ONSB has compensated Scott & Stringfellow in the amount of $11,894 for
consulting services rendered by Scott & Stringfellow to ONSB.

         THE FULL TEXT OF SCOTT & STRINGFELLOW'S OPINION, WHICH SETS FORTH
CERTAIN ASSUMPTIONS MADE, MATTERS CONSIDERED AND LIMITATIONS ON REVIEW
UNDERTAKEN, IS ATTACHED AS APPENDIX C TO THIS PROXY STATEMENT, IS INCORPORATED
HEREIN BY REFERENCE, AND SHOULD BE READ IN ITS ENTIRETY IN CONNECTION WITH THIS
PROXY STATEMENT. THE SUMMARY OF THE OPINION SET FORTH IN THIS PROXY STATEMENT IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE OPINION. SCOTT & STRINGFELLOW'S
OPINION IS DIRECTED ONLY TO THE FAIRNESS, FROM A FINANCIAL POINT OF VIEW, OF THE
EXCHANGE RATE TO THE SHAREHOLDERS OF ONSB AND DOES NOT CONSTITUTE A
RECOMMENDATION TO ANY SHAREHOLDER OF ONSB AS TO HOW SUCH SHAREHOLDER SHOULD VOTE
ON THE AGREEMENT.

OPINION OF LSB'S FINANCIAL ADVISOR

         GENERAL. Pursuant to an engagement letter dated November 15, 1996, the
Board of Directors of LSB retained Carson Medlin to act as its financial advisor
in connection with a potential acquisition of ONSB, for which Carson Medlin will
receive a fee of $50,000 and reimbursement of its out-of-pocket expenses. As
part of that engagement, Carson Medlin has rendered its opinion as to the
fairness of the Exchange Rate resulting from the terms of the Merger to the
shareholders of LSB from a financial point of view. Carson Medlin is a National
Association of Securities Dealers, Inc. member investment banking firm that
specializes in the securities of southeastern United States financial
institutions. As part of its investment banking activities, Carson Medlin is
regularly engaged in the valuation of southeastern United States financial
institutions and transactions relating to their securities, including mergers
and acquisitions.

   
         Carson Medlin delivered its opinion on June 30, 1997 to the Board of
Directors of LSB stating that the Exchange Rate resulting from the terms of the
Merger is fair to the shareholders of LSB from a financial point of view. The
full text of Carson Medlin's written opinion is attached as Appendix D to this
Proxy Statement and should be read in its entirety with respect to the
procedures followed, assumptions made, matters considered and qualifications and
limitations on the review undertaken by Carson Medlin in connection therewith.
The consideration to be received by ONSB shareholders and option holders in
connection with the Merger is the result of negotiations between LSB and ONSB.
Carson Medlin's opinion is addressed to LSB's Board of Directors only, and the
opinion does not constitute a recommendation to any LSB shareholder as to how
such shareholder should vote at the LSB Special Meeting or as to any other
matter. The summary of the opinion of Carson Medlin set forth in this Proxy
Statement is qualified in its entirety by reference to the full text of such
opinion attached as Appendix D.

         Carson Medlin has relied upon, without independent verification, the
accuracy and completeness of the information reviewed by it for the purpose of
rendering its opinion. Carson Medlin did not
    




                                       39
<PAGE>   59

undertake any independent evaluation or appraisal of the assets and liabilities
of LSB or ONSB, nor was it furnished with any such appraisals. Carson Medlin
assumed that the financial forecasts reviewed by it have been reasonably
prepared on a basis reflecting the best currently available judgments and
estimates of the managements of LSB and ONSB, and that such projected financial
results will be realized in the amounts and at the times contemplated thereby.
Carson Medlin is not an expert in the evaluation of loan portfolios,
underperforming or nonperforming assets, net charge-offs of such assets or the
adequacy of allowances for losses with respect thereto; has not reviewed any
individual credit files; and has assumed that the loan loss allowances for each
of LSB and ONSB are in the aggregate adequate to cover such losses. Carson
Medlin assumed that the Merger will be recorded as a pooling of interests under
generally accepted accounting principles. Carson Medlin's opinion is necessarily
based on economic, market and other conditions as in effect on the date of its
analysis and on information made available to it dated as of various earlier
dates.

         In connection with rendering its opinion, Carson Medlin performed a
variety of financial analyses. The preparation of a fairness opinion of this
nature involves various determinations as to the most appropriate and relevant
methods of financial analysis and the application of those methods to the
particular circumstances, and, therefore, is not readily susceptible to partial
analysis or summary description. Carson Medlin believes that its analyses must
be considered together as a whole and that selecting portions of such analyses
and the facts considered therein, without considering all other factors and
analyses, could create an incomplete view of the analyses and the process
underlying Carson Medlin's opinion. In its analyses, Carson Medlin made numerous
assumptions with respect to industry performance, business and economic
conditions and other matters, many of which are beyond the control of LSB and
ONSB and which may not be realized. Any estimates contained in Carson Medlin's
analyses are not necessarily predictive of actual future results or values,
which may be significantly more or less favorable than such estimates. Estimates
of values of companies do not purport to be appraisals or necessarily reflect
the prices at which such companies or their securities may actually be sold.
None of the analyses performed by Carson Medlin was assigned a greater
significance by Carson Medlin than any other.

   
         In connection with rendering its opinion dated June 27, 1997, Carson
Medlin reviewed (i) the Agreement; (ii) the annual reports to shareholders of
LSB, including audited financial statements, for the five years ended December
31, 1996; (iii) the annual reports to shareholders of ONSB, including audited
financial statements, for the five years ended December 31, 1996; (iv) the Proxy
Statement of LSB dated March 14, 1997 for the annual meeting of the shareholders
of LSB held on April 16, 1997; (v) the Proxy Statement of ONSB dated April 12,
1997 for the annual meeting of the shareholders of ONSB held on May 12, 1997;
(vi) interim financial statements of LSB and ONSB through March 31, 1997; (vii)
a preliminary copy of the Joint Proxy Statement prepared in connection with the
respective special meetings of the shareholders of LSB and ONSB to consider the
Merger; and (viii) certain other financial and operating information with
respect to the business, operations and prospects of LSB and ONSB.
    

         Carson Medlin also (i) held discussions with members of the senior
management of LSB and ONSB regarding their respective historical and current
business operations, financial conditions and future prospects; (ii) reviewed
the historical market prices and trading activity for LSB Stock and ONSB Stock
and compared them with those of certain publicly traded companies that it deemed
to be relevant; (iii) compared the results of operations of LSB and ONSB with
those of certain publicly traded companies that it deemed to be relevant; (iv)
compared the proposed financial terms of the Merger with




                                       40
<PAGE>   60

the financial terms, to the extent publicly available, of certain other recent
business combinations of commercial banking organizations; (v) analyzed the pro
forma financial impact of the Merger on LSB; and (vi) conducted such other
studies, analyses, inquires and examinations as Carson Medlin deemed
appropriate.

         The following is a summary of the principal analyses performed by
Carson Medlin in connection with rendering its opinion.

   
         SUMMARY OF TRANSACTION CONSIDERATION. Carson Medlin reviewed the terms
of the proposed transaction, including the Exchange Rate and the aggregate
transaction value. Carson Medlin considered the implied value of the
consideration offered, which, based on the $20.00 per share closing price of LSB
Stock on June 23, 1997, was approximately $18.96 per share of ONSB Stock,
representing a 29% premium over the closing price of ONSB Stock at the end of
the month (December 31, 1996) immediately preceding the public announcement of
the Merger. This represents total consideration of approximately $30.0 million
to be exchanged for the approximately 1,582,678 shares of ONSB Stock outstanding
and approximately $32.9 million to be exchanged for the ONSB Stock outstanding
and the approximately 151,636 options to purchase ONSB Stock outstanding. Carson
Medlin calculated that, as of April 30, 1997, the total consideration to be
exchanged for ONSB Stock outstanding represented 265% of ONSB's stated book
value at December 31, 1996 and 261% of ONSB's stated book value at March 31,
1997, adjusted pro forma for the conversion of stock options; 24.0 times ONSB's
net income for the quarter ended March 31, 1997 (annualized), adjusted pro forma
for the conversion of stock options; a 21.3% premium on ONSB's March 31, 1997
core deposits (defined as the aggregate transaction value minus stated book
value, as a percentage of core deposits), adjusted pro forma for the conversion
of stock options; and 23.7% of the total assets of ONSB at March 31, 1997,
adjusted pro forma for the conversion of stock options.
    

         COMPARABLE TRANSACTION ANALYSIS. Carson Medlin reviewed certain
information relating to the mergers of 16 selected North Carolina commercial
banks announced between September 1993 and December 1996 in which the acquired
banks had total assets of from $55 million to $900 million (the "Comparable
Transactions"). The Comparable Transactions are (acquiree/acquiror): First
Charlotte Financial/Centura Banks, Central State Bank/First Bancorp, Bank of
Iredell/United Carolina Bancshares, State Bank of Fayetteville/First Citizens
BancShares, Standard Bank & Trust/Triangle Bancorp, Columbus National
Bank/Triangle Bancorp, Security Capital Corp./CCB Financial Corp., Village
Bank/Triangle Bancorp, Bank of Union/First Charter Corp., Triad Bank/United
Carolina Bancshares, First Commercial Holding Co./Centura Banks, First Community
Bank/Centura Banks, Salem Trust Bank/CCB Financial Corp., FirstSouth
Bank/Centura Banks, Granville United Bank/Triangle Bancorp, and Carolina State
Bank/Bank of Granite Corp. Carson Medlin considered, among other factors, the
earnings, capital level, asset size and quality of assets of the acquired
financial institutions. Carson Medlin compared the transaction prices to the
then recently reported annual earnings, stated book values, total assets and
core deposits.

         On the basis of the Comparable Transactions, Carson Medlin calculated a
range of purchase prices as a percentage of stated book value for the Comparable
Transactions of from a low of 167% to a high of 304%, with a mean of 228%. These
transactions indicated a range of values for ONSB of from $21.0 million to $38.3
million, with a mean of $28.7 million (based on ONSB's stated book value of
$11.35 million at March 31, 1997, adjusted for the pro forma exercise of stock
options). The aggregate




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consideration to be exchanged for the outstanding ONSB Stock and options to
purchase ONSB Stock implied by the terms of the Merger is approximately $32.9
million or 265% of ONSB's stated book value at March 31, 1997, adjusted for the
pro forma exercise of stock options, which is above the mean for the Comparable
Transactions.

         Carson Medlin calculated a range of purchase prices as a multiple of
annual earnings for the Comparable Transactions from a low of 16.4 times to a
high of 29.8 times, with a mean of 21.2 times. These transactions indicted a
range of values for ONSB of from $22.5 million to $40.8 million, with a mean of
$29.0 million (based on ONSB's net income for the quarter ended March 31, 1997
(annualized), adjusted for the pro forma exercise of stock options). The
aggregate consideration to be exchanged for the outstanding ONSB Stock and
options to purchase ONSB Stock implied by the terms of the Merger is
approximately $32.9 million or 24.0 times ONSB's net income for the quarter
ended March 31, 1997 (annualized), adjusted for the pro forma exercise of stock
options, which is above the mean for the Comparable Transactions.

         Carson Medlin calculated the core deposit premiums for the Comparable
Transactions and found a range of values of from a low of 9.3% to a high of
28.9%, with a mean of 18.1%. The aggregate consideration to be exchanged for the
outstanding ONSB Stock and options to purchase ONSB Stock implied by the terms
of the Merger is approximately $32.9 million, implying a premium on ONSB's core
deposits as of March 31, 1997 of 21.3%, which is above the mean for the
Comparable Transactions.

         Finally, Carson Medlin calculated a range of purchase prices as a
percentage of total assets for the Comparable Transactions of from a low of
15.2% to a high of 31.0%, with a mean of 22.2%. The aggregate consideration to
be exchanged for the outstanding ONSB Stock and options to purchase ONSB Stock
implied by the terms of the Merger is approximately $32.9 million or 23.7% of
ONSB's assets at March 31, 1997, which is above the mean for the Comparable
Transactions.

         INDUSTRY COMPARATIVE ANALYSIS. In connection with rendering its
opinion, Carson Medlin compared selected operating results of LSB and ONSB to
those of 50 publicly-traded community commercial banks in Alabama, Florida,
Georgia, North Carolina, South Carolina, Virginia and West Virginia (the "SIBR
Banks") as contained in the Southeastern Independent Bank Review(TM), a
proprietary research publication prepared by Carson Medlin quarterly since 1991.
The SIBR Banks range in asset size from approximately $97 million to $2.3
billion and in shareholders' equity from approximately $9 million to $231
million. Carson Medlin considers this group of financial institutions more
comparable to LSB and ONSB than larger, more widely traded regional financial
institutions.

         Carson Medlin compared, among other factors, the profitability,
capitalization, and asset quality of LSB to those of the SIBR Banks. Carson
Medlin noted that (i) LSB had a return on average assets (ROA) for the year
ended December 31, 1996 of 1.48% compared to 1.23% on average for the SIBR
Banks; (ii) LSB had a return on average equity (ROE) for the year ended December
31, 1996 of 11.7% compared to 12.6% on average for the SIBR Banks; (iii) LSB had
common equity to total assets at December 31, 1996 of 12.3% compared to 9.6% on
average for the SIBR Banks; and (iv) LSB's ratio of nonperforming assets
(defined as loans 90 days past due, nonaccrual loans and other real estate
owned) to total loans and other real estate owned at December 31, 1996 was 0.6%
compared to 1.0% for the SIBR Banks. This comparison indicated that LSB's 1996
financial performance was generally higher than that of the average for the SIBR
Banks for most of the factors considered.




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<PAGE>   62

         Carson Medlin compared, among other factors, the profitability,
capitalization and asset quality of ONSB to those of the SIBR Banks. Carson
Medlin noted that (i) ONSB had a return, when adjusted for certain nonrecurring
expenses, on average assets (ROA) for the year ended December 31, 1996 of 1.0%
compared to 1.2% on average for the SIBR Banks; (ii) ONSB had a return on
average equity (ROE) for the year ended December 31, 1996 of 11.7% compared to
12.6% on average for the SIBR Banks; (iii) ONSB had common equity to total
assets at December 31, 1996 of 8.6% compared to 9.6% on average for the SIBR
Banks; and (iv) ONSB's ratio of nonperforming assets (defined as loans 90 days
past due, nonaccrual loans and other real estate owned) to total loans and other
real estate owned at December 31, 1996 was 0.5% compared to 1.0% for the SIBR
Banks. This comparison indicated that ONSB's 1996 financial performance was
lower than that of the average for the SIBR Banks for some of the factors
considered and higher for other factors considered.

         No company or transaction used in the preceding industry comparative or
comparable transaction analyses is identical to LSB, ONSB or the Merger.
Accordingly, evaluating the results of these analyses necessarily involves
complex considerations and judgments concerning differences in financial and
operating characteristics of LSB, ONSB and other factors that could affect the
value of the companies to which they are being compared. Mathematical analysis
(such as determining the average or median) is not, in itself, a meaningful
method of evaluating comparable industry or transaction data.

         CONTRIBUTION ANALYSIS. Carson Medlin reviewed the relative
contributions in terms of various balance sheet and income statement factors to
be made by LSB and ONSB to the combined institution based on (i) balance sheet
data at December 31, 1996 and (ii) income statement data for the year ended
December 31, 1996. The income statement and balance sheet components analyzed
included total assets, total loans, total deposits, shareholders' equity, and
net income (adjusted for extraordinary items). This analysis showed that, while
ONSB shareholders and option holders would own approximately 21.7% of the
aggregate outstanding shares and approximately 22.7% of the shares and options
of the combined institution based on the Exchange Rate and assuming an Average
Closing Price of LSB Stock of $20.00 per share, ONSB is contributing 23.6% of
total assets, 23.4% of total loans, 23.7% of total deposits, 17.8% of
shareholders' equity, and 17.6% of annual net income.

         DILUTION ANALYSIS. Carson Medlin analyzed the impact on LSB, on a pro
forma basis, of consolidating the results of operations of ONSB in future
periods. In particular, Carson Medlin compared LSB's results of future
operations on the basis of a combination with ONSB to the results of LSB's
future operations on a stand alone basis. Carson Medlin estimated, assuming an
Average Closing Price of LSB Stock of $20.00 per share and consummation of the
Merger in 1997, that as a result of the Merger, LSB per share earnings (before
nonrecurring expenses related to the Merger) would be diluted by less than 10%
for the initial year of combined operations, by approximately 1% in the second
year, and that the Merger would be accretive to LSB per share earnings
thereafter. Carson Medlin estimated that, as a result of the Merger, dilution to
LSB stated book value per share would be approximately 7.0% in the initial year
of combined operations, and that such dilution would decline by approximately
0.5% annually thereafter. Carson Medlin considers the magnitude and duration of
such impact on the results of LSB's operations to be typical of, and within the
range of acceptable industry standards for, transactions such as the Merger.



                                       43
<PAGE>   63

         The opinion expressed by Carson Medlin was based upon market, economic
and other relevant considerations as they existed and have been evaluated as of
the date of the opinion. Events occurring after the date of issuance of the
opinion, including but not limited to, changes affecting the securities markets,
the results of operations or material changes in the assets or liabilities of
LSB or ONSB, could materially affect the assumptions used in preparing the
opinion.

         THE FULL TEXT OF CARSON MEDLIN'S OPINION, WHICH SETS FORTH CERTAIN
ASSUMPTIONS MADE, MATTERS CONSIDERED AND LIMITATIONS ON REVIEW UNDERTAKEN, IS
ATTACHED AS APPENDIX D TO THIS PROXY STATEMENT, IS INCORPORATED HEREIN BY
REFERENCE, AND SHOULD BE READ IN ITS ENTIRETY IN CONNECTION WITH THIS PROXY
STATEMENT. THE SUMMARY OF THE OPINION SET FORTH IN THIS PROXY STATEMENT IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE OPINION. CARSON MEDLIN'S OPINION
IS DIRECTED ONLY TO THE FAIRNESS, FROM A FINANCIAL POINT OF VIEW, OF THE
EXCHANGE RATE TO THE SHAREHOLDERS OF LSB AND DOES NOT CONSTITUTE A
RECOMMENDATION TO ANY SHAREHOLDER OF LSB AS TO HOW SUCH SHAREHOLDER SHOULD VOTE
ON THE AGREEMENT.

EFFECTIVE TIME OF THE MERGER

         Subject to the conditions to the obligations of the parties to effect
the Merger, the Effective Time will occur on the date and at the time that the
Articles of Merger relating to the Merger become effective with the North
Carolina Secretary of State. Unless otherwise agreed upon by LSB and ONSB, the
Effective Time is expected to occur as soon as practicable after approval of the
Merger by the shareholders of ONSB and shareholders of LSB and the effective
date (including expiration of all applicable waiting periods) of all required
consents of any regulatory authority having jurisdiction over the Merger.

         No assurance can be provided that the necessary shareholder and
regulatory approvals can be obtained or that other conditions precedent to the
Merger can or will be satisfied. ONSB and LSB anticipate that all conditions to
consummation of the Merger will be satisfied so that the Merger can be
consummated during the third quarter of 1997.
Delays in the consummation of the Merger could occur, however.

         The Board of Directors of either ONSB or LSB generally may terminate
the Agreement if the Merger is not consummated by September 30, 1997, unless the
failure to consummate by that date is the result of a breach of the Agreement by
the party seeking termination, or if the Average Closing Price of LSB Stock is
less than $15.00 or more than $24.00. See "--Conditions to Consummation of the
Merger" and "--Waiver, Amendment, and Termination."

DISTRIBUTION OF LSB STOCK CERTIFICATES

         Promptly after the Effective Time, LSB will cause Wachovia Bank of
North Carolina, N.A., acting in its capacity as Exchange Agent, to mail a letter
of transmittal, together with instructions for the exchange of the Certificates
representing shares of ONSB Stock for certificates representing shares of LSB
Stock, to the former shareholders of ONSB.

         ONSB SHAREHOLDERS SHOULD NOT SEND IN THEIR CERTIFICATES UNTIL THEY
RECEIVE THE LETTER OF TRANSMITTAL AND INSTRUCTIONS.




                                       44
<PAGE>   64



         Upon surrender to the Exchange Agent of certificates for ONSB Stock,
together with a properly completed letter of transmittal, there will be issued
and mailed to each holder of ONSB Stock surrendering such items a certificate
or certificates representing the number of shares of LSB Stock to which such
holder is entitled, if any, and a check for the amount to be paid in lieu of
any fractional share (without interest), together with all undelivered
dividends or distributions in respect of such shares (without interest
thereon).  In no event will ONSB, LSB, LSB Bank, or the Exchange Agent be
liable to any holder of ONSB Stock for any LSB Stock or dividends thereon or
cash delivered in good faith to a public official pursuant to any applicable
abandoned property, escheat, or similar law.  After the Effective Time, to the
extent permitted by law, ONSB shareholders of record as of the Effective Time
will be entitled to vote at any meeting of LSB shareholders the number of whole
shares of LSB Stock into which their shares of ONSB Stock have been converted,
regardless of whether such shareholders have surrendered their ONSB Stock
certificates.  Whenever a dividend or other distribution is declared by LSB on
LSB Stock, the record date for which is at or after the Effective Time, the
declaration will include dividends or other distributions on all shares of LSB
Stock issuable pursuant to the Agreement, but no dividend or other distribution
payable after the Effective Time with respect to LSB Stock will be paid to the
holder of any unsurrendered ONSB Stock certificate until the holder duly
surrenders such certificate.  Upon surrender of such ONSB Stock certificate,
however, both the LSB Stock certificate, together with all undelivered
dividends or other distributions (without interest) and any undelivered cash
payments to be paid in lieu of fractional shares (without interest), will be
delivered and paid with respect to each share represented by such certificate.

         After the Effective Time, there will be no transfers of shares of ONSB
Stock on ONSB's stock transfer books.  If Certificates representing shares of
ONSB Stock are presented for transfer after the Effective Time, they will be
canceled and exchanged for the shares of LSB Stock and a check for the amount
due in lieu of fractional shares and undelivered dividends, if any, deliverable
in respect thereof.

CONDITIONS TO CONSUMMATION OF THE MERGER

         Consummation of the Merger is subject to various conditions, including
(i) receipt of the approval of the Agreement by the shareholders of ONSB as
required by North Carolina law and LSB shareholders as required under Nasdaq
rules, (ii) receipt of certain regulatory approvals required for consummation
of the Merger; (iii) receipt of all consents required for consummation of the
Merger or for the preventing of any default under any contract or permit which,
if not obtained or made,  is reasonably likely to have, individually or in the
aggregate, a material adverse effect on the defaulting party; (iv) the absence
of any law or order or any action taken by any court, governmental, or
regulatory authority prohibiting, restricting, or making illegal the
consummation of the Merger; (v) the Registration Statement being declared
effective and all necessary SEC and state approvals relating to the issuance or
trading of the shares of LSB Stock issuable pursuant to the Merger shall have
been received; (vi) receipt of approval of the shares of LSB Stock issuable
pursuant to the Merger for listing on the Nasdaq National Market, subject to
official notice of issuance; (vii) receipt of letters from Turlington and
Company, L.L.P. and Larrowe, Cardwell & Company, LC to the effect that the
Merger will qualify for "pooling-of-interests" accounting treatment; (viii)
receipt of a favorable opinion of Bell, Davis & Pitt, P.A. that the Merger will
constitute a "reorganization" under Section 368 of the Code and the exchange of
ONSB Stock for LSB Stock will not result in taxable gain or loss to ONSB
shareholders, except to the extent of any cash received; (ix) receipt of the
fairness opinions of Carson Medlin and Scott & Stringfellow; and (x)
satisfaction of certain other conditions, including the receipt of agreements
of affiliates of ONSB, certain legal opinions and various certificates from the
officers of ONSB and LSB


                                     45
<PAGE>   65

and the accuracy of all representations and warranties, the performance of all
agreements and compliance with all covenants made in the Agreement.  See
"--Regulatory Approvals" and "--Waiver, Amendment, and Termination".

         No assurance can be provided as to when or if all of the conditions
precedent to the Merger can or will be satisfied or waived by the party
permitted to do so. In the event the Merger is not consummated by September 30,
1997, the Agreement may be terminated and the Merger abandoned by the Board of
Directors of either ONSB or LSB, unless the failure to consummate the Merger is
caused by a breach of the Agreement by the terminating party. See "--Waiver,
Amendment, and Termination."

REGULATORY APPROVALS

         The Merger may not be consummated in the absence of receipt of the
requisite regulatory approvals. Applications for the approvals described below
have been submitted to the appropriate regulatory agencies.  The Merger and the
establishment of additional branch banking offices resulting from the Merger
will require the prior approval of the FDIC.  In evaluating the Merger, the
FDIC must consider, among other factors, the financial and managerial resources
and future prospects of LSB, LSB Bank and ONSB and the convenience and needs of
the communities to be served. The relevant statutes prohibit the FDIC from
approving the Merger if (i) it would result in a monopoly or be in furtherance
of any combination or conspiracy to monopolize or attempt to monopolize the
business of banking in any part of the United States or (ii) its effect in any
section of the country may be to substantially lessen competition or to  tend
to create a monopoly, or (iii) it would be a restraint of trade in any other
manner, unless the FDIC finds that the anticompetitive effects of the Merger
are clearly outweighed in the public interest by the probable effect of the
transaction in meeting the convenience and needs of the communities to be
served. The Merger may not be consummated until 30 days (which the FDIC may
reduce with the concurrence of the Attorney General of the United States to 15
days) following the date of the FDIC approval, during which time the United
States Department of Justice may challenge the transaction on antitrust
grounds. The commencement of any antitrust action would stay the effectiveness
of the approval of the agencies, unless a court of competent jurisdiction
specifically orders otherwise.  The FDIC is expected to approve the Merger in
mid-July 1997.

         The Merger also is subject to the approval of the North Carolina
Commissioner of Banks (the "Commissioner"). In its evaluation, the Commissioner
will take into account considerations similar to those applied by the FDIC.
The Commissioner is expected to approve the Merger at the meeting of the North
Carolina State Banking Commission on July 23, 1997.

         THERE CAN BE NO ASSURANCE THAT SUCH REGULATORY APPROVALS WILL BE
OBTAINED OR AS TO THE TIMING OF ANY SUCH APPROVALS. There also can be no
assurance that any such approvals will not impose conditions or be restricted
in a manner (including requirements relating to the raising of additional
capital or the disposition of assets) which in the reasonable judgment of the
Board of Directors of either LSB or ONSB would so materially adversely impact
the economic or business benefits of the transactions contemplated by the
Agreement that, had such condition or requirement been known, such party would
not in its reasonable judgment have entered into the Agreement.

         ONSB and LSB are not aware of any material governmental approvals or
actions that are required for consummation of the Merger, except as described
above. Should any other approval or action be required, it presently is
contemplated that such approval or action would be sought.





                                       46
<PAGE>   66

WAIVER, AMENDMENT, AND TERMINATION

         To the extent permitted by applicable law, ONSB and LSB, with the
approval of their respective Boards of Directors, may amend the Agreement by
written agreement at any time before or after shareholder approval of the
Agreement has been obtained; provided, however, that after the ONSB Special
Meeting, no amendment may alter the manner or basis in which shares of ONSB
Stock will be exchanged for LSB Stock without the requisite approval of the
holders of the issued and outstanding shares of ONSB Stock entitled to vote
thereon.  In addition, prior to or at the Effective Time, either ONSB or LSB,
or both, acting through their respective Boards of Directors or chief executive
officers or other authorized officers may waive any default in the performance
of any term of the Agreement by the other party, may waive or extend the time
for the compliance or fulfillment by the other party of any and all of its
obligations under the Agreement, and may waive any of the conditions precedent
to the obligations of such party under the Agreement, except any condition
which, if not satisfied, would result in the violation of any applicable law or
governmental regulation.  No such waiver will be effective unless written and
executed by a duly authorized officer of ONSB or LSB, as the case may be.  In
the event that the condition precedent requiring a favorable tax opinion from
Bell, Davis & Pitt, P.A. is waived, the Boards of Directors of both ONSB and
LSB will resolicit the approval of their respective shareholders with respect
to the Merger.

         Notwithstanding approval of the Agreement by the shareholders of ONSB
and LSB, the Agreement may be terminated and the Merger abandoned at any time
prior to the Effective Time (i) by mutual consent of the Boards of Directors of
ONSB and LSB; (ii) by the Board of Directors of ONSB or LSB (a) in the event of
any inaccuracy of any representation or warranty of the other party contained
in the Agreement which cannot be or has not been cured within 30 days after
receipt of written notice by the breaching party of such inaccuracy and which
inaccuracy would provide the terminating party the ability to refuse to
consummate the Merger under the Agreement (provided that the terminating party
is not then in breach of any representation or warranty or in material breach
of any covenant or other agreement contained in the Agreement), (b) in the
event of a material breach by the other party of any covenant or agreement
contained in the Agreement which cannot be or has not been cured within 30 days
after the receipt of written notice by the breaching party of such breach, (c)
if (1) any approval or consent of any regulatory authority required for
consummation of the Merger has been denied by final nonappealable action or is
not appealed within the time limit for appeal, or (2) the shareholders of ONSB
or LSB fail to vote their approval of the matters submitted for their approval,
(d) if the Merger is not consummated by September 30, 1997, provided that the
failure to consummate is not due to the breach of the Agreement by the party
electing to terminate, (e) if any of the conditions precedent to the
obligations of such party to consummate the Merger have not been satisfied or
fulfilled  by the appropriate party by September 30, 1997 (provided that the
terminating party is not then in breach of any representation or warranty or in
material breach of any covenant or other agreement contained in the Agreement),
or (f) if the Average Closing Price of LSB Stock is either below $15.00 or
above $24.00, provided such termination occurs during the seven-day period
after determination of the final Exchange Rate.

         If the Merger is terminated as described above, the Agreement will
become void and have no effect, except that certain provisions of the
Agreement, including those relating to the obligations to share certain
expenses, maintain the confidentiality of certain information obtained, and
return all documents obtained from the other party under the Agreement, will
survive such termination.  In





                                       47
<PAGE>   67

addition, termination of the Agreement under certain circumstances will not
relieve any breaching party from liability for any uncured willful breach of a
representation, warranty, covenant, or agreement giving rise to such
termination.  See "--Expenses and Fees" and "--Option Agreement."

DISSENTERS' RIGHTS

         Under the provisions of Article 13 of the NCBCA, any shareholder of
ONSB who (i) gives ONSB notice of his intent to demand payment for his shares
if the Merger is effectuated, which notice is actually received by ONSB before
the vote is taken at the ONSB Special Meeting and (ii) does not vote his shares
at the ONSB Special Meeting in favor of the proposal to approve the Agreement,
shall be entitled if the Agreement is approved and the Merger effectuated, to
receive payment in cash of the fair value of his shares upon compliance with
the procedural requirement of the Article.  A shareholder of ONSB who does not
satisfy such requirements is not entitled to payments for his shares under
Article 13 of the NCBCA.

         Specifically, Section 55-13-22 of the NCBCA provides that if proposed
corporate action creating dissenters' rights is authorized at a shareholders'
meeting, a corporation shall mail by registered or certified mail, return
receipt requested, a written dissenters' notice to all shareholders who
satisfied the requirements set forth above. The dissenters' notice must be sent
no later than 10 days after the corporate action was taken, and must supply a
form for demanding payment, state where the payment demand must be sent and
where and when certificates for certificated shares must be deposited, and set
a date by which the corporation must receive the payment demand, which date may
not be fewer than 30 nor more than 60 days after the date the dissenters'
notice is mailed. Under Section 55-13-23 of the NCBCA, a shareholder who sends
a dissenters' notice must demand payment and deposit his share certificates in
accordance with the terms of the notice. A shareholder who demands payment and
deposits his share certificates in accordance with the terms of the notice
retains all other rights of a shareholder until such rights are canceled or
modified by the taking of the proposed corporate action. A shareholder who does
not demand payment or deposit his share certificates where required, each by
the date set in the dissenters' notice, is not entitled to payment for his
shares.

         As soon as the proposed corporate action is taken, or upon receipt of
a payment demand, the corporation shall offer to pay each dissenting
shareholder who complied with the  requirements of Section 55-13-23 the amount
the corporation estimates to be the fair value of his shares, plus interest
accrued to the date of payment, and shall pay this amount to each dissenting
shareholder who agrees in writing to accept it in full satisfaction of his
demand.  However, pursuant to Section 55-13-28 of the NCBCA, a dissenting
shareholder may notify the corporation in writing of his own estimate of the
fair value of his shares and amount of interest due, and demand payment of such
estimate, or reject the corporation's offer and demand payment of the fair
value of his shares and interest due, if: (i) the dissenting shareholder
believes that the amount offered by the corporation is less than the fair value
of his shares or that the interest due is incorrectly calculated; (ii) the
corporation fails to make payment to a dissenting shareholder who accepts the
corporation's offer within 30 days after the dissenting shareholders'
acceptance; or (iii) the corporation, having failed to take the proposed
action, does not return the deposited certificates within 60 days after the
date set for demanding payment.

         A dissenting shareholder waives his right to demand payment unless he
notifies the corporation of his demand in writing under subparagraph (i) above
within 30 days after the corporation offered payment for his shares or under
subparagraphs (ii) or (iii) above within 30 days after the corporation has
failed to perform its required actions in a timely fashion. A dissenting
shareholder who fails to notify the





                                       48
<PAGE>   68

corporation of his demand under subparagraph (i) above within such 30-day
period shall be deemed to have withdrawn his dissent and demand for payment.

         If a demand for payment remains unsettled, the dissenting shareholder
may commence a proceeding within 60 days after the date of his payment demand
and petition the court to determine the fair value of the shares and accrued
interest. Upon service upon it of the petition filed with the court, the
corporation shall pay to the dissenting shareholder the amount previously
offered by the corporation. If the dissenting shareholder does not commence the
proceeding within the 60-day period, the dissenting shareholder shall have an
additional 30 days to either (i) accept in writing the amount offered by the
corporation, upon which acceptance the corporation shall pay such amount to the
dissenting shareholder in full satisfaction of his demand, or (ii) withdraw his
demand for payment and resume the status of a nondissenting shareholder. A
dissenting shareholder who takes no action within such 30-day period shall be
deemed to have withdrawn his dissent and demand for payment.

         A record shareholder may assert dissenters' rights as to fewer than
all the shares registered in his name only if he dissents with respect to all
shares beneficially owned by any one person and notifies the corporation in
writing of the name and address  of each person on whose behalf he asserts
dissenters' rights. The rights of such partial dissenting shareholder are
determined as if the shares as to which he dissents and his other shares were
registered in the names of different shareholders.

         A beneficial shareholder may assert dissenters' rights as to shares
held on his behalf only if: (i) he submits to the corporation the record
shareholder's written consent to dissent not later than the time the beneficial
shareholder asserts dissenters' rights; and (ii) he does so with respect to all
shares of which he is the beneficial shareholder.

         A failure to vote against approval of the Agreement will not
constitute a waiver of a shareholder's appraisal rights, provided that notice
in writing of the shareholder's intent to demand payment for his shares if the
Merger is effectuated is given to ONSB, which notice is actually received by
ONSB before the vote is taken at the ONSB Special Meeting.  Voting against
approval of the Agreement will not entitle a shareholder to receive cash for
his shares unless such shareholder complies with all of the procedural
requirements discussed above. Any holder of ONSB Stock who returns a signed
proxy but who fails to provide voting instructions with respect to the proposal
to approve the Agreement will be deemed to have voted in favor of the Agreement
and will not be entitled to assert dissenters' rights of appraisal.

         THE FOREGOING IS ONLY A SUMMARY OF THE RIGHTS OF DISSENTING HOLDERS OF
ONSB STOCK. ANY HOLDER OF ONSB STOCK WHO INTENDS TO DISSENT SHOULD CAREFULLY
REVIEW THE TEXT OF THE NORTH CAROLINA STATUTORY LAW SET FORTH IN APPENDIX B TO
THIS PROXY STATEMENT AND SHOULD ALSO CONSULT WITH HIS OR HER ATTORNEY. THE
FAILURE OF A ONSB SHAREHOLDER TO FOLLOW PRECISELY THE PROCEDURES SUMMARIZED
ABOVE AND SET FORTH IN APPENDIX B TO THIS PROXY STATEMENT MAY RESULT IN LOSS OF
APPRAISAL RIGHTS. NO FURTHER NOTICE OF THE EVENTS GIVING RISE TO APPRAISAL
RIGHTS OR ANY STEPS ASSOCIATED THEREWITH WILL BE FURNISHED TO HOLDERS OF ONSB
STOCK, EXCEPT AS INDICATED ABOVE OR OTHERWISE REQUIRED BY LAW.





                                       49
<PAGE>   69

         In general, any dissenting shareholder who perfects such holder's
right to be paid the "fair value" of such holder's ONSB Stock in cash will
recognize taxable gain or loss for federal income tax purposes upon receipt of
such cash. See "--Certain Federal Income Tax Consequences."

CONDUCT OF BUSINESS PENDING THE MERGER

         Pursuant to the Agreement, ONSB has agreed that, except as otherwise
expressly contemplated in the Agreement, ONSB will (a) operate its business
only in the usual, regular, and ordinary course; (b) preserve its business
organization and assets and maintain its rights and franchises; (c) take no
action which would (i) adversely affect the ability of any party to obtain any
consents required for the transactions contemplated in the Agreement without
imposition of a materially adverse condition or restriction or (ii) adversely
affect the ability of any party to perform its covenants and agreements under
the Agreement and to consummate the Merger; and (d) work with LSB to achieve
appropriate operating efficiencies, and to conform the accounting policies and
practices of ONSB to those of LSB.

         In addition, ONSB has agreed that, except as expressly contemplated or
permitted by the Agreement, it will not agree or commit to do any of the
following without the prior written consent of LSB: (i) amend its Articles of
Incorporation, Bylaws or other governing instruments; (ii) incur, guarantee, or
otherwise become responsible for, any additional debt in excess of an aggregate
of $100,000 except in the ordinary course of business consistent with past
practices, or forgive any indebtedness of any person owed to ONSB in excess of
$10,000, or permit the imposition on an asset of any additional lien (other
than those required in the ordinary course of business), or (iii) repurchase,
redeem, or otherwise acquire or exchange (other than exchanges in the ordinary
course under employee benefit plans) any shares of the capital stock of ONSB,
or declare or pay any dividend or make any other distribution in respect of
ONSB's capital stock; or (iv) except pursuant to the exercise of outstanding
stock options or warrants, issue, sell, pledge, encumber, authorize the
issuance of, or otherwise permit to become outstanding, any additional shares
of ONSB Stock or any other right to acquire any such stock; or (v) adjust,
split, combine, or reclassify any capital stock of ONSB or issue or authorize
the issuance of any other securities in respect of or in substitution for
shares of ONSB Stock, or sell, lease, mortgage or otherwise dispose of or
otherwise encumber (a) any shares of capital stock of any ONSB subsidiary, or
(b) any asset other than in the ordinary course of business for reasonable and
adequate consideration; or (vi) except for purchases of U.S. government agency
securities, purchase any securities or make any material investment in any
person other than a wholly-owned ONSB subsidiary, or otherwise acquire direct
or indirect control over any person, other than in connection with (a)
foreclosures in the ordinary course of business, or (b) acquisitions of control
by ONSB in its fiduciary capacity; or (vii) grant any increase in compensation
or benefits to the employees or officers of ONSB, except in accordance with
past practice or as required by applicable law; pay any severance or
termination pay or any bonus other than pursuant to written policies or
contracts in effect on the date of the Agreement, or enter into or amend any
severance agreements with any officer of ONSB; grant any increase in
compensation or other benefits to directors of ONSB; or voluntarily accelerate
the vesting of any stock options or other stock-based compensation or employee
benefits; or (viii) enter into or amend any employment contract between ONSB
and any person (unless such amendment is required by law) that ONSB does not
have the unconditional right to terminate without liability (other than
liability for services already rendered); or (ix) adopt any new employee
benefit plan or make any change in or to any existing employee benefit plans
other than that required by applicable law or that, in the opinion of counsel,
is necessary or advisable to maintain the tax qualified status of any such
plan; or (x) make any significant change in any tax or accounting methods,
principles, or practices or systems of internal accounting controls, except as
may be necessary to conform to changes in tax laws or regulatory accounting
requirements or generally





                                       50
<PAGE>   70

accepted accounting principles; or (xi) commence any litigation other than in
accordance with past practice, settle any litigation involving any liability of
ONSB for money damages in excess of $10,000 or restrictions upon the operations
of ONSB; or (xii) except in the ordinary course of business, enter into,
modify, amend or terminate any material contract or waive, release, compromise
or assign any material rights or claims thereunder.

         Pursuant to the Agreement, LSB has agreed that, except as otherwise
expressly contemplated by the Agreement, it shall (i) continue to conduct its
business in a manner that enhances the long-term value of the LSB Stock and the
business prospects of LSB and, to the extent consistent therewith, use its
reasonable best efforts to preserve intact LSB's core businesses and goodwill
with its employees and the communities it serves, and (ii) take no action that
would (a) materially adversely affect the ability of any party to obtain any
consents required for the transactions contemplated in the Agreement without
imposition of a materially adverse condition or restriction, or (b) materially
adversely affect the ability of any party to perform its covenants and
agreements under the Agreement; provided, that the foregoing shall not prevent
LSB from acquiring any other company or discontinuing or disposing of any of
its assets or business if such action is, in the judgment of LSB, desirable in
the conduct of the business of LSB.  LSB also agreed that it will not:  (x)
without the prior written consent of ONSB, amend the Articles of Incorporation
or Bylaws of LSB, in each case, in any manner adverse to the holders of ONSB
Stock, or (y) declare and pay any cash dividends on the LSB Stock except for
regular cash dividends with record and payment dates in accordance with LSB's
past record dates for cash dividends.





                                       51
<PAGE>   71


MANAGEMENT AND OPERATIONS AFTER THE MERGER

   
         The current directors and officers of LSB and LSB Bank will continue
to hold the same positions after consummation of the Merger as they held prior
to the Merger.   Under the Agreement, ONSB has the right to recommend
candidates to fill two additional directorships on the Board of Directors of
LSB and LSB Bank effective as of the consummation of the Merger.  ONSB has
recommended Lloyd G. Walter, Jr. and Marvin D. Gentry, both of whom are
currently directors of ONSB, to fill the additional directorships.  Additional
information regarding Messrs. Walter and Gentry is incorporated by reference to
ONSB's Annual Report on Form 10-KSB, as amended, for the year ended 
December 31, 1996.  In addition, under the Agreement, LSB will appoint Nicholas
A.  Daves to the office of Senior Vice President of LSB Bank, Charles V.
Darnell to the office of Senior Vice President of LSB Bank, Suzanne J. Bullotta
to the office of Senior Vice President of LSB Bank, and all other officers of
ONSB to offices at LSB Bank that carry titles equivalent to the titles held by
such officers at ONSB (except for the corporate secretary of ONSB who will be
appointed as an assistant corporate secretary of LSB Bank), all effective as of
consummation of the Merger.  See "--Interests of Certain Persons in the
Merger."  Information concerning the management of LSB and LSB Bank is
incorporated herein by reference to LSB's Annual Report on Form 10-K, as
amended, for the year ended December 31, 1996. See "DOCUMENTS INCORPORATED BY
REFERENCE."
    

         LSB Bank will be the surviving corporation resulting from the Merger
and shall continue to be governed by the laws of the State of North Carolina
and operate in accordance with its Articles of Incorporation and Bylaws as in
effect on the date of the Agreement until otherwise amended or repealed after
the Effective Time. ONSB will cease to be a separate entity.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

         GENERAL. Certain members of ONSB management and of the ONSB Board of
Directors have interests in the Merger that are in addition to any interests
they may have as shareholders of ONSB generally.  These interests include,
among other things, provisions in the Agreement relating to director and
officer insurance coverage for ONSB directors and officers, and certain
severance and other employee benefits, as described below.

         INSURANCE. The Agreement provides that LSB will use its reasonable
best efforts to maintain in effect for a period of three years after the Merger
director and officer liability insurance, of at least the same coverage and
amounts as provided by ONSB's current director and officer liability insurance,
with respect to claims arising from events that occur prior to the Effective
Time and covering persons who currently are covered by such insurance.

         LSB DIRECTORSHIPS.  Under the Agreement, ONSB has the right to
recommend candidates to fill two additional directorships on the Board of
Directors of LSB as of the Effective Time, which two directorships expire at
the 1998 annual meeting of LSB shareholders, and to specify one of those
candidates to be renominated upon expiration of his term to fill an additional
directorship with a term expiring in 1999 and the other candidate to fill an
additional directorship with a term expiring in 2000.  Under the Agreement, the
LSB Board of Directors will elect to the LSB Board two of the candidates
recommended to fill the two additional directorships expiring in 1998 and, upon
expiration of the terms of those candidates, will recommend to LSB shareholders
the election of the candidates recommended to fill the two additional
directorships expiring in 1999 and 2000.  The additional directors nominated by
ONSB and elected to the LSB Board will also be elected to the Board of
Directors of LSB Bank.  ONSB





                                       52
<PAGE>   72

has recommended Lloyd G. Walter, Jr. and Marvin D. Gentry, both of whom are
currently directors of ONSB, to fill the additional directorships. The Boards of
Directors of LSB and LSB Bank have appointed Messrs. Walter and Gentry to their
respective Boards, subject to consummation of the Merger.

         ONSB EXECUTIVE ARRANGEMENTS. Nicholas A. Daves serves as Chairman of
the Board of Directors of ONSB and Robert E. Marziano serves as President and
Chief Executive Officer of ONSB under employment contracts dated September 29,
1995, and April 10, 1995, respectively.  Each contract has a rolling three-year
term, with automatic renewal unless the contract is otherwise terminated.  The
base annual salaries of Mr. Daves and Mr. Marziano currently are fixed at
$112,400 and $135,000, respectively, with annual merit increases.  Mr. Daves'
contract also provides for a deferred compensation package.  If the employment
contracts are terminated without "cause," as defined in the contracts, ONSB
must pay all compensation and benefits due under the terminated contract for a
period of three years following the termination.  The employment contracts also
contain "change in control" provisions that permit Mr. Daves and Mr.  Marziano
to terminate their individual employment contracts in the event that their job
titles or responsibilities are significantly diminished.  In the event of such
termination, each individual is entitled to a severance payment of three times
his then current annual base salary.  In the absence of such termination, the
employment contracts continue without interruption, and the employee's base
annual salary is increased on each subsequent anniversary date of the
employment agreement by the greater of 10% or the increase in the Consumer
Price Index.

         Charles V. Darnell serves as Senior Vice President and Chief Financial
Officer of ONSB under an employment contract dated July 10, 1996.  The contract
expires June 30, 1997, subject to automatic one-year extensions unless either
party gives written notice to the other, at least 60 days prior to expiration
of the term, of intent to terminate the contract.  No such termination notice
was given with respect to the June 30, 1997 expiration date.  The base annual 
salary for Mr. Darnell is $75,000, with annual merit increases.  Mr. Darnell's
employment contract also contains a "change in control" provision that permits
Mr. Darnell to terminate the contact within six months of the "change in
control" transaction and receive a severance payment equal to his then current
annual base salary.  If the contract is not terminated, it is automatically
extended for a term of three years.

         The acquisition of ONSB by LSB will be deemed a "change in control"
under all three of the employment contracts with ONSB officers.  Accordingly,
Messrs. Daves and Marziano would have the option of terminating their
employment contracts and receiving the severance amounts provided for in such
contracts in the event that their job titles or responsibilities are
significantly diminished.  Mr. Darnell would have the option of terminating his
contract within six months of the Merger and receiving the severance amount
provided for in his contract. If  Messrs. Daves, Marziano and Darnell elected
to terminate their employment contracts, the severance payment estimated to be
due to each of them, assuming such termination occurred at the time of the
Merger, would be approximately $337,200, $405,000, and $75,000, respectively.

         On May 1, 1997, however, Mr. Marziano, ONSB and LSB Bank entered into
an amendment to his existing employment contract, effective upon the Merger.
The amendment modifies the change in control provision to provide that at the
Effective Time, Mr.  Marziano's employment will terminate and LSB Bank will pay
Mr. Marziano a $285,000 severance payment in cash.  The amendment also
eliminates provisions concerning Mr. Marziano's duties, term of employment,
compensation and right to severance payment in the event of changes in current
office or status as a director of ONSB and modifies the non-compete provisions.
The non-compete provisions were amended to: (i) extend the duration of the
non-compete from three years to five years after termination of employment;
(ii) expand the geographic scope of the restriction from 




                                       53
<PAGE>   73

Forsyth and Stokes Counties, North Carolina, to Forsyth, Stokes, Davidson, 
Yadkin, Rockingham, and Surrey Counties, North Carolina.  In exchange for the
modified non- compete provision, LSB Bank will pay Mr. Marziano, during his
lifetime, 60 equal monthly cash payments of $2,000.

         Under the Agreement, Messrs. Daves and Darnell are being appointed to
the offices of Senior Vice President of LSB Bank.  LSB expects to negotiate new
employment contracts with Messrs. Daves and Darnell to replace their existing
employment contracts, although no assurance can be given that such contracts
will be executed before or after the Effective Time, or that such persons will
not elect to terminate their existing employment contracts and seek the
severance payments provided for in such contracts.

         DIRECTOR AND OFFICER STOCK OPTIONS. ONSB has granted stock options to
Messrs. Daves and Marziano and certain other executive officers and directors
under the ONSB Stock Plans. The following table sets forth with respect to
Messrs. Daves and Marziano, all executive officers as a group, all outside
directors as a group, and all executive officers and directors as a group: (i)
the number of shares covered by options held by such persons, (ii) the weighted
average exercise price of all such options held by such persons, and (iii) the
aggregate value (i.e., stock price less option exercise price) of all such
options based upon the closing bid price of ONSB Stock of $16.50 on June 16,
1997 (as reported in the Charlotte Observer). All of the ONSB Options set forth
below are currently exercisable.

<TABLE>
<CAPTION>
                                                                               WEIGHTED
                                                                               AVERAGE
                                                                               EXERCISE                 AGGREGATE
                                                                               PRICE PER                 VALUE OF
                                                  OPTIONS HELD                  OPTION                    OPTIONS
                                                  ------------                 ---------                  -------
  <S>                                                <C>                        <C>                       <C>
  Nicholas A. Daves                                  20,498                     $ 9.09                    $151,890
  Robert E. Marziano                                 24,698                       5.45                     272,913
  Executive officers as a group (4 persons)          61,324                       7.01                     581,965
  Outside directors (15 persons)                       --                          --                          --
  All executive officers and directors as a          61,324                       7.01                     581,965
  group (19 persons)
</TABLE>

       Based on the closing price of LSB Stock ($20.00) on the Nasdaq National
Market System on June 16, 1997 (as reported by the Wall Street Journal),
assuming the Exchange Rate is 0.948, the aggregate value of the options to Mr.
Daves, Mr. Marziano, the executive officers as a group, the 15 outside
directors as a group and all executive officers and directors as a group would
be $202,315, $333,670, $732,822, $0 and $732,822, respectively.

       OTHER MATTERS RELATING TO ONSB EMPLOYEE BENEFIT PLANS. The Agreement
also provides that, after the Effective Time, LSB will provide generally to
officers and employees of ONSB who, at or after the Effective Time, become
officers or employees of a LSB company (other than Messrs. Daves, Marziano and
Darnell, who will have rights to employee benefits as provided in their
respective employment contracts), employee benefits under employee benefit
plans (other than stock option or other plans involving the potential issuance
of LSB Stock, except as set forth in the Agreement) on terms and conditions
substantially similar to those currently provided by the LSB companies to their
similarly situated officers and employees. For purposes of participation and
vesting (but not accrual of





                                       54
<PAGE>   74

benefits) under such employee benefit plans, the service of the employees of
ONSB under any ONSB employee benefit plan prior to the Effective Time shall be
treated as service with LSB under a similar employee benefit plan maintained by
LSB. LSB also will honor all employment, consulting and other compensation
contracts between ONSB and any current or former director, officer or employee
disclosed to LSB at the execution of the Agreement and all provisions for
vested benefits or other vested amounts earned or accrued through the Effective
Time under ONSB benefit plans disclosed to LSB at the execution of the
Agreement.  Any employee of ONSB (other than those serving pursuant to
employment contracts) who, following the Merger and at LSB's discretion, is
terminated by LSB for reasons other than "cause" (as defined in the Agreement)
within six months following the Effective Time shall be entitled to a severance
payment in an amount equal to one week's salary or wages for each full year of
prior continuous service with ONSB prior to the Merger; provided that any
severance payment shall equal at least two weeks' salary or wages.

OPTION AGREEMENT

         In addition to the Agreement, ONSB and LSB have entered into an option
agreement dated as of January 20, 1997 (the "Option Agreement"), pursuant to
which ONSB has granted an option to LSB to purchase under certain conditions
265,675 shares of ONSB Stock (subject to adjustment to ensure that at least
13.28% of the issued and outstanding shares of ONSB Stock at the time of
exercise are subject to the option) at an exercise price of $8.00 in cash per
share (the "Lock-Up Option").

         The Lock-Up Option is exercisable only if:  (i) an offer to acquire
ONSB has been received by ONSB, or solicited by ONSB, from a person or entity
other than LSB, and (ii) ONSB and such person or entity have entered into an
agreement concerning any merger, sale of substantial assets, tender offer, sale
of shares of stock or similar transaction involving ONSB.  The Lock-Up Option
may be exercised by LSB on a date that is the earlier of  (i) the consummation
of the Merger, (ii) the termination of the Merger Agreement in accordance with
the terms thereof or (iii) September 30, 1997.  LSB's right to exercise the
Lock-Up Option has not been triggered as of the date of this Proxy Statement.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

         THE FOLLOWING IS A SUMMARY OF CERTAIN ANTICIPATED FEDERAL INCOME TAX
CONSEQUENCES OF THE MERGER TO ONSB SHAREHOLDERS. THIS SUMMARY IS BASED ON THE
FEDERAL INCOME TAX LAWS AS NOW IN EFFECT AND AS CURRENTLY INTERPRETED; IT DOES
NOT TAKE INTO ACCOUNT POSSIBLE CHANGES TO SUCH LAWS OR INTERPRETATIONS,
INCLUDING AMENDMENTS TO APPLICABLE STATUTES OR REGULATIONS OR CHANGES IN
JUDICIAL OR ADMINISTRATIVE RULINGS, SOME OF WHICH MAY HAVE RETROACTIVE EFFECT.
THIS SUMMARY DOES NOT PURPORT TO ADDRESS ALL ASPECTS OF THE POSSIBLE FEDERAL
INCOME TAX CONSEQUENCES OF THE MERGER AND IS NOT INTENDED AS TAX ADVICE TO ANY
PERSON. IN PARTICULAR, AND WITHOUT LIMITING THE FOREGOING, THIS SUMMARY DOES
NOT ADDRESS THE FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER TO ONSB
SHAREHOLDERS IN LIGHT OF THEIR PARTICULAR CIRCUMSTANCES OR STATUS (FOR EXAMPLE,
AS FOREIGN PERSONS, TAX-EXEMPT ENTITIES, DEALERS IN SECURITIES, INSURANCE
COMPANIES, AND CORPORATIONS, AMONG OTHERS). NOR DOES THIS SUMMARY ADDRESS ANY
CONSEQUENCES OF THE MERGER UNDER ANY STATE, LOCAL, ESTATE, OR FOREIGN TAX LAWS.
ONSB SHAREHOLDERS, THEREFORE, ARE URGED TO CONSULT THEIR OWN TAX ADVISORS  AS
TO THE SPECIFIC TAX CONSEQUENCES TO THEM OF THE MERGER, INCLUDING TAX RETURN
REPORTING REQUIREMENTS, THE





                                       55
<PAGE>   75

APPLICATION AND EFFECT OF FEDERAL , FOREIGN, STATE, LOCAL, AND OTHER TAX LAWS,
AND THE IMPLICATIONS OF ANY PROPOSED CHANGES IN THE TAX LAWS.

         The Merger is intended to constitute a "reorganization" within the
meaning of section 368(a) of the Code, with ONSB, LSB, and LSB Bank each
intended to qualify as a "party to a reorganization" under section 368(b) of
the Code, in which case, in the opinion of Bell, Davis & Pitt, P.A., counsel to
ONSB, the following tax consequences will generally result (subject to the
limitations and qualifications referred to herein): (a) no gain or loss will be
recognized by the ONSB shareholders upon the receipt of LSB Stock solely in
exchange for their shares of ONSB Stock; (b) the basis of the LSB Stock to be
received by ONSB shareholders will be the same as the basis of the ONSB Stock
surrendered in the exchange; (c) the holding period of the LSB Stock to be
received by ONSB shareholders will include the holding period of the ONSB Stock
surrendered in exchange therefor, provided that the ONSB Stock was held as a
capital asset on the date of the exchange; and (d) the payment of cash to ONSB
shareholders in lieu of issuing fractional share interests in LSB will be
treated for federal income tax purposes as if the fractional shares were
distributed as part of the exchange and then were redeemed by LSB. These cash
payments will be treated as having been received as a distribution in full
payment in exchange for the stock redeemed as provided in section 302(a) of the
Code. If the redemption meets one of the four tests set forth in section 302,
any gain or loss recognized will be a capital gain or loss. If none of the four
tests provided in section 302 is met, the redemption will be treated as payment
of a dividend.

         A federal income tax ruling with respect to this transaction was not
requested from the Internal Revenue Service ("IRS").  Instead, Bell, Davis &
Pitt, P.A. will render an opinion concerning certain federal income tax
consequences of the proposed Merger under federal income tax law.  It is such
firm's opinion that, based upon the assumption the Merger is consummated in
accordance with North Carolina law and in conformity with the representations
made by the management of ONSB and LSB, the transaction will constitute a
"reorganization" within the meaning of section 368(a) of the Code ("Tax
Opinion"). The Tax Opinion addresses the tax consequences of the Merger under
North Carolina law, but does not address any other state, local, or other tax
consequences of the Merger. The Tax Opinion does not bind the IRS nor preclude
the IRS from adopting a contrary position. In addition, the Tax Opinion will be
subject to certain assumptions and qualifications and will be based on the
truth and accuracy of certain representations made by the management of ONSB
and LSB, as to, among other things, the fact that there is no plan or intention
by any of the shareholders of ONSB who own one percent (1%) or more of the
outstanding ONSB Stock, and to the best of the knowledge of the management of
ONSB, the remaining ONSB shareholders have no plan or intention, to sell,
exchange, or otherwise dispose of a number of shares of LSB Stock that they
will receive in the Merger that will reduce on the part of the ONSB
shareholders such shareholders' ownership of LSB Stock to a number of shares
having an aggregate value as of the date of the Merger of less than 50% of the
aggregate value of all of the stock of ONSB outstanding immediately prior to
the Merger.

         A successful IRS challenge to the "reorganization" status of the
Merger would result in a ONSB shareholder recognizing gain or loss with respect
to each share of ONSB Stock surrendered equal to the difference between the
shareholder's basis in such share and the fair market value, as of the
Effective Time of the Merger, of the LSB Stock received in exchange therefor.
In such event, a ONSB shareholder's aggregate basis in the LSB Stock received
would equal its fair market value and his or her holding period for such stock
would begin the day after the Merger.

ACCOUNTING TREATMENT

         It is anticipated that the Merger will be accounted for as a
pooling-of-interests. Under the pooling-of interests method of accounting, the
recorded amounts of the assets and liabilities of ONSB will be carried forward
at their previously recorded amounts, and prior period financial statements
will





                                       56
<PAGE>   76

be restated for all periods as though ONSB and LSB had been combined at the
beginning of the earliest period presented.

         In order for the Merger to qualify for pooling-of-interests accounting
treatment, substantially all (90% or more) of the outstanding ONSB Stock must
be exchanged for LSB Stock with substantially similar terms. There are certain
other criteria that must be satisfied in order for the Merger to qualify as a
pooling-of-interests, some of which criteria cannot be satisfied until after
the Effective Time.  In addition, it is a condition to closing that each party
receive assurances from Turlington and Company, L.L.P. and Larrowe, Cardwell &
Company, LC, in form and content satisfactory to such party, to the effect that
the Merger will qualify for pooling-of-interests accounting treatment.

         For information concerning certain conditions to be imposed on the
exchange of ONSB Stock for LSB Stock in the Merger by affiliates of ONSB and
certain restrictions to be imposed on the transferability of the LSB Stock
received by those affiliates in the Merger in order, among other things, to
ensure the availability of pooling-of-interests accounting treatment, see
"--Resales of LSB Stock."

EXPENSES AND FEES

         The Agreement provides, in general, that each of the parties will bear
and pay its own costs and expenses in connection with the transactions
contemplated by the Agreement, including filing, registration and application
fees, printing fees, and fees and expenses of its own financial or other
consultants, investment bankers, accountants, and legal counsel, except that
each party will pay one-half of (i) the SEC and Blue Sky filing fees incurred
in connection with the Registration Statement and this Proxy
Statement/Prospectus and (ii) the printing and distribution costs incurred in
connection with the printing and distribution of the Registration Statement and
this Proxy Statement/Prospectus.

RESALES OF LSB STOCK

         LSB Stock to be issued to shareholders of ONSB in connection with the
Merger will be registered under the Securities Act. All shares of LSB Stock
received by holders of ONSB Stock and all shares of LSB Stock issued and
outstanding immediately prior to the Effective Time, will be freely
transferable upon consummation of the Merger by those shareholders of ONSB not
deemed to be "Affiliates" of ONSB or LSB. "Affiliates" generally are defined as
persons or entities who control, are controlled by, or are under common control
with ONSB or LSB at the time of the ONSB Special Meeting (generally, executive
officers and directors).

         Rules 144 and 145 promulgated under the Securities Act restrict the
sale of LSB Stock received in the Merger by Affiliates and certain of their
family members and related interests. Generally speaking, during the year
following the Effective Time, Affiliates of ONSB or LSB may resell publicly the
LSB Stock received by them in the Merger within certain limitations as to the
amount of LSB Stock sold in any three-month period and as to the manner of
sale. After the one-year period, such Affiliates of ONSB who are not affiliates
of LSB may resell their shares without restriction. The ability of Affiliates
to resell shares of LSB Stock received in the Merger under Rule 144 or 145 as
summarized herein generally will be subject to LSB's having satisfied its
Exchange Act reporting requirements for specified periods prior to the time of
sale. Affiliates will receive additional information regarding the effect of
Rules 144 and 145 on their ability to resell LSB Stock received in the Merger.
Affiliates also would be permitted to resell LSB Stock received in the Merger
pursuant to an effective registration statement under the Securities Act or an
available exemption from the Securities Act registration requirements.  This
Proxy Statement does not cover any resales of LSB Stock received by persons who
may be deemed to be Affiliates of ONSB or LSB.





                                       57
<PAGE>   77

         ONSB has agreed to use its reasonable best efforts to cause each
person who it reasonably believes to be an Affiliate of ONSB to execute and
deliver to LSB not less than thirty (30) days prior to the Effective Time, an
agreement providing that such Affiliate will not sell, pledge, transfer, or
otherwise dispose of any LSB Stock obtained as a result of the Merger, except
in compliance with Securities Act and the rules and regulations of the SEC
thereunder and, in any case, until such time as financial results covering at
least 30 days of combined operations of LSB and ONSB have been published.
Certificates representing shares of ONSB Stock surrendered for exchange by any
person who is an Affiliate of ONSB for purposes of Rule 145(c) under the
Securities Act shall not be exchanged for certificates representing shares of
LSB Stock until LSB has received such a written agreement from such person. The
stock certificates representing LSB Stock issued to Affiliates in the Merger
may bear a legend summarizing the foregoing restrictions. LSB will not be
required to maintain the effectiveness of the Registration Statement under the
Securities Act for purposes of resales of shares of LSB Stock by such
affiliates.  See "--Conditions to Consummation of the Merger."





                                       58
<PAGE>   78


                 EFFECT OF THE MERGER ON RIGHTS OF SHAREHOLDERS

         As a result of the Merger, holders of ONSB Stock will be exchanging
their shares of ONSB Stock for shares of LSB Stock. LSB is a North Carolina
corporation governed by the NCBCA and LSB's Articles of Incorporation and
Bylaws.  Certain differences deemed material by ONSB and LSB exist between the
rights of ONSB shareholders and those of LSB shareholders. The differences are
summarized below.  The following discussion is necessarily general; it is not
intended to be a complete statement of all differences affecting the rights of
shareholders and their respective entities, and it is qualified in its entirety
by reference to the NCBCA as well as to LSB's Articles and Bylaws and ONSB's
Articles of Incorporation and Bylaws.

ANTI-TAKEOVER PROVISIONS GENERALLY

         The provisions of LSB's Articles of Incorporation and Bylaws described
below under the headings "--Authorized Capital Stock," "--Classified Board of
Directors and Absence of Cumulative Voting," "--Removal of Directors,"
"--Special Meeting of Shareholders," "--Actions by Shareholders Without a
Meeting," "--Shareholder Nominations and Proposals," and "--Business
Combinations" are referred to herein as the "Protective Provisions." In
general, the Protective Provisions make it more likely that LSB's Board of
Directors will play a central role if any group or person attempts to acquire
control of LSB, so that the Board can further the interests of LSB and its
shareholders as appropriate under the circumstances. For example, if the Board
determines that a sale of control of LSB is in the best interests of LSB and
its shareholders, the Protective Provisions enhance the Board's ability to
maximize the value to be received by the shareholders upon such a sale.

         Although LSB's management believes the Protective Provisions are
beneficial to LSB's shareholders, the Protective Provisions also may tend to
discourage some takeover bids. As a result, LSB's shareholders may be deprived
of opportunities to sell some or all of their shares at prices that represent a
premium over prevailing market prices.  On the other hand, defeating
undesirable acquisition offers can be a very expensive and time-consuming
process. To the extent that the Protective Provisions discourage undesirable
proposals, LSB may be able to avoid those expenditures of time and money.

         The Protective Provisions also may discourage open market purchases by
a potential acquirer. Such purchases may increase the market price of LSB Stock
temporarily, enabling shareholders to sell their shares at a price higher than
that which otherwise would prevail. In addition, the Protective Provisions may
decrease the market price of LSB Stock by making the stock less attractive to
persons who invest in securities in anticipation of price increases from
potential acquisition attempts. The Protective Provisions also may make it more
difficult and time consuming for a potential acquirer to obtain control of LSB
through replacing the Board of Directors and management. Furthermore, the
Protective Provisions may make it more difficult for LSB's shareholders to
replace the Board of Directors or management, even if a majority of the
shareholders believe such replacement is in the best interests of LSB. As a
result, the Protective Provisions may tend to perpetuate the incumbent Board of
Directors and management of LSB.

AUTHORIZED CAPITAL STOCK

         LSB.  LSB's Articles of Incorporation authorize issuance of up to
10,000,000 shares of LSB Stock, of which 5,405,177 shares were issued and
outstanding as of June 17, 1997.  LSB's Board of Directors may authorize the
issuance of additional shares of LSB Stock without further action by LSB's
shareholders, unless such action is required in a particular case by applicable
laws or regulations or by any stock exchange upon which LSB's capital stock may
be listed.  LSB's shareholders do not have the





                                       59
<PAGE>   79

preemptive right to purchase or subscribe to any unissued authorized shares of
LSB Stock or any option or warrant for the purchase thereof.

         Subject to the rights of shareholders who perfect dissenters' rights
of appraisal and the payment of cash in lieu of fractional shares, assuming an
Exchange Rate of 0.948, LSB will issue an estimated 1,644,130 shares of LSB
Stock in connection with the Merger, including shares to be subject to assumed
options and warrants.  Based on the number of shares of LSB Stock outstanding
on the LSB Record Date, it is anticipated that, following the consummation of
the Merger, a total of approximately 6,905,556 shares of LSB Stock will be
outstanding, excluding shares subject to assumed options and warrants.

         The authority to issue additional shares of LSB Stock provides LSB
with the flexibility necessary to meet its future needs without the delay
resulting from seeking shareholder approval. The authorized but unissued shares
of LSB Stock will be issuable from time to time for any corporate purpose,
including, without limitation, stock splits, stock dividends, employee benefit
and compensation plans, acquisitions, and public or private sales for cash as a
means of raising capital. Such shares could be used to dilute the stock
ownership of persons seeking to obtain control of LSB. In addition, the sale of
a substantial number of shares of LSB Stock to persons who have an
understanding with LSB concerning the voting of such shares, or the
distribution or declaration of a dividend of shares of LSB Stock (or the right
to receive LSB Stock) to LSB shareholders, may have the effect of discouraging
or increasing the cost of unsolicited attempts to acquire control of LSB.

         ONSB.  ONSB's Articles of Incorporation authorize the issuance of up
to 2,000,000 shares of ONSB Stock, of which 1,582,678 shares were issued and
outstanding as of the ONSB Record Date. ONSB's Board of Directors may authorize
the issuance of additional authorized shares of ONSB Stock without further
action by ONSB's shareholders, unless such action is required in a particular
case by applicable laws or regulations or by any stock exchange upon which
ONSB's capital stock may be listed. ONSB's shareholders do not have preemptive
right to purchase or subscribe to any unissued unauthorized shares of ONSB
Stock or any option or warrant for the purchase thereof.

AMENDMENT OF ARTICLES OF INCORPORATION AND BYLAWS

         LSB.  The Articles of Incorporation of LSB do not contain any
provisions governing amendments to the Articles.  Under North Carolina law, the
Articles may be amended by action of the Board of Directors of LSB and without
shareholder action only for minor technical revisions. Any other amendment must
be approved by a majority of the shares voting except that if the proposed
amendment creates dissenters' rights, the vote required is a majority of the
total votes entitled to be cast.

         Subject to certain restrictions set forth below, either the Board of
Directors or the shareholders of LSB may amend LSB's Bylaws. The Board of
Directors may amend or repeal the Bylaws and adopt new Bylaws except that: (i)
a bylaw adopted or amended by the shareholders may not be readopted, amended,
or repealed by the Board of Directors if neither the Articles of Incorporation
nor a bylaw adopted by the shareholders authorizes the Board of Directors to
adopt, amend, or repeal that particular bylaw; (ii) a bylaw that fixes a
greater quorum or voting requirement for the Board of Directors may not be
adopted by the Board of Directors by a vote of less than a majority of the
directors then in office and may not itself be amended by a quorum or vote of
directors less than the quorum or vote therein prescribed in such bylaw or
prescribed by the shareholders; and (iii) if a bylaw fixing a greater quorum or
voting requirement for the Board of Directors is originally adopted by the
shareholders, it may be amended or repealed only by the shareholders, unless
the Bylaws permit amendment or repeal by the Board of Directors.  The
shareholders of LSB generally may adopt, amend, or repeal the Bylaws upon the
affirmative vote of a plurality of the shareholders voting on the matter for
which a quorum is present.





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<PAGE>   80

         ONSB.  The Articles of Incorporation of ONSB do not contain any
provisions governing amendments to the Articles.  Under North Carolina law, the
Articles may be amended by action of the Board of Directors of ONSB and without
shareholder action only for minor technical revisions. Any other amendment must
be approved by a majority of the shares voting except that if the proposed
amendment creates dissenters' rights, the vote required is a majority of the
total votes entitled to be cast.

         The Board of Directors of ONSB may amend ONSB's Bylaws and adopt new
Bylaws, without shareholder approval, except as provided in the Bylaws. The
Bylaws provide that the Board of Directors of ONSB may not adopt a Bylaw (i)
requiring more than a majority of the voting shares for a quorum at a meeting
of shareholders or more than a majority of the votes cast to constitute action
by the shareholders, except where higher percentages are required by law, or
(ii) providing for the management of ONSB otherwise than by the Board of
Directors or its executive committee. In addition, no bylaw adopted or amended
by the shareholders of ONSB shall be altered or repealed by the Board of
Directors of ONSB.

CLASSIFIED BOARD OF DIRECTORS AND ABSENCE OF CUMULATIVE VOTING

         LSB.  The Bylaws of LSB provide that LSB's Board of Directors shall
consist of not less than nine nor more than 24 directors divided into three
classes, with each class to be as nearly equal in number as possible. The
directors in each class serve three-year terms of office. The number of persons
comprising the LSB Board of Directors is currently set at 12.  The effect of
LSB's having a classified Board of Directors is that only approximately
one-third of the members of the Board are elected each year, which effectively
requires two annual meetings for LSB's shareholders to change a majority of the
members of the Board. The purpose of dividing LSB's Board of Directors into
classes is to facilitate continuity and stability of leadership of LSB by
ensuring that experienced personnel familiar with LSB will be represented on
LSB's Board at all times, and to permit LSB's management to plan for the future
for a reasonable time.  By potentially delaying the time within which an
acquirer could obtain working control of the Board, however, this provision may
discourage some potential mergers, tender offers, or takeover attempts.

         Pursuant to the Bylaws, each shareholder generally is entitled to one
vote for each share of LSB Stock held and is not entitled to cumulative voting
rights in the election of directors. With cumulative voting, a shareholder has
the right to cast a number of votes equal to the total number of such holder's
shares multiplied by the number of directors to be elected. The shareholder has
the right to distribute all of his votes in any manner among any number of
candidates or to cumulate such shares in favor of one candidate. Directors are
elected by a plurality of the total votes cast by all shareholders. With
cumulative voting, it may be possible for minority shareholders to obtain
representation on the Board of Directors. Without cumulative voting, the
holders of more than 50% of the shares of LSB Stock generally have the ability
to elect 100% of the directors. As a result, the holders of the remaining LSB
Stock effectively may not be able to elect any person to the Board of
Directors. The absence of cumulative voting thus could make it more difficult
for a shareholder who acquires less than a majority of the shares of LSB Stock
to obtain representation on LSB's Board of Directors.

         ONSB. The Bylaws of ONSB provide that ONSB's Board of Directors shall
consist of not less than seven nor more than 25 individuals, the exact number
of directors to be elected being determined by the Board of Directors.
Currently, the Board of Directors of ONSB has set the number of directors at
17. The Bylaws of ONSB provide that ONSB's Board of Directors be divided into
three classes, with each class to be as nearly equal in number as possible. The
directors in each class serve three-year terms of office. The effect of ONSB
having a classified Board of Directors is that only approximately one-third of
the members of the Board are elected each year, which effectively requires two
annual meetings for ONSB's shareholders to change a majority of the members of
the Board. The purpose of dividing





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ONSB's Board of Directors into classes is to facilitate continuity and
stability of leadership of ONSB by ensuring that experienced personnel familiar
with ONSB will be represented on ONSB's Board at all times, and to permit
ONSB's management to plan for the future for a reasonable time.  By potentially
delaying the time within which an acquirer could obtain working control of the
Board, however, this provision may discourage some potential mergers, tender
offers, or takeover attempts. Pursuant to the Bylaws, each shareholder is
entitled to one vote for each share of ONSB Stock held.

REMOVAL OF DIRECTORS

         LSB.  LSB's Bylaws provide that a director may be removed only "for
cause" as such term is defined in the Bylaws.  To remove a director for certain
"for cause" actions as described in the Bylaws,  the Bylaws require the
affirmative vote of at least a majority of the total number of directors or a
majority vote of the total number of shares entitled to vote at an election for
such director.  To remove a director for certain other "for cause" actions as
described in the Bylaws, the Bylaws require the affirmative vote of at least
two-thirds of the total number of directors.  These provisions have the effect
of  preventing a majority shareholder from circumventing the classified board
system by removing directors and filling the vacancies with new individuals
selected by that shareholder.  Accordingly, the provision may have the effect
of impeding efforts to gain control of the Board of Directors by anyone who
obtains a controlling interest in LSB Stock.  The term of a director appointed
to fill a vacancy expires at the end of the term of such director's predecessor
in office.

         ONSB. ONSB's Bylaws provide that a director may be removed at any
time, with or without cause, by a vote of the shareholders holding a majority
of the outstanding shares entitled to vote at an election of directors. Unless
the entire Board is removed, however, an individual director shall not be
removed when the number of shares voting against the proposal for removal would
be sufficient to elect a director if such shares could be voted cumulatively at
an annual election. As a result, it would be more difficult to remove directors
representing minority shareholders.

LIMITATIONS ON DIRECTOR LIABILITY

         LSB.  LSB's Articles of Incorporation provide for the elimination of
the personal liability of each director arising out of an action by LSB or
otherwise for monetary damages for breach of his duty as a director, whether
such action is brought by or in the right of the corporation or otherwise,
except for liability with respect to (i) acts or omissions that the director at
the time of such breach knew or believed were clearly in conflict with the best
interests of LSB, (ii) any liability under Section 55-8-33 of the NCBCA
(liability for unlawful distributions), (iii) any transaction from which the
director derived an improper personal benefit, or (iv) acts or omissions
occurring prior to the effective date of the provision.

         Although this provision does not affect the availability of injunctive
or other equitable relief as a remedy for a breach of duty by a director, it
does limit the remedies available to a shareholder who has a valid claim that a
director acted in violation of his duties, if the action is among those as to
which liability is limited. This provision may reduce the likelihood of
shareholder derivative litigation against directors and may discourage or deter
shareholders or management from bringing a lawsuit against directors for breach
of their duties, even though such action, if successful, might have benefited
LSB and its shareholders. The SEC has taken the position that similar
provisions added to other corporations' certificates of incorporation would not
protect those corporations' directors from liability for violations of the
federal securities laws. Similarly, the federal banking laws may not allow
directors of banks and bank holding companies to avoid liability for violations
of federal banking law or to receive indemnification for such violations.





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         ONSB. ONSB's Articles of Incorporation provide for the elimination of
the personal liability of each director arising out of an action by ONSB or
otherwise for monetary damages for breach of his duty as a director, except
with respect to (i) acts or omissions not made in good faith that such director
at the time of such breach knew or believed were in conflict with the best
interests of the Corporation, (ii) any liability under Section 55-8-33 of the
NCBCA (liability for unlawful distributions) or any successor provision, (iii)
any transaction from which such director derived an improper personal benefit,
(iv) acts or omissions occurring prior to the effective date of the provision,
or (v) acts or omissions where the elimination of personal liability of
directors for monetary damages would be in violation of the provisions of
Chapter 53 of the North Carolina General Statutes.

INDEMNIFICATION

         LSB. Under the NCBCA, subject to certain exceptions, a corporation may
indemnify an individual made a party to a proceeding, because he is or was a
director, against liability incurred in the proceeding if (i) he conducted
himself in good faith; (ii) he reasonably believed (a) in the case of conduct
in his official capacity with the corporation, that his conduct was in its best
interests, and (b) in all other cases, that his conduct was at least not
opposed to its best interests; and (iii) in the case of any criminal
proceeding, he had no reasonable cause to believe his conduct was unlawful.
Moreover, unless limited by its articles of incorporation, a corporation must
indemnify a director who was wholly successful, on the merits or otherwise, in
the defense of any proceeding to which he was a party because he is or was a
director of the corporation against reasonable expenses incurred by him in
connection with the proceeding.  Expenses incurred by a director in defending a
proceeding may be paid by the corporation in advance of the final disposition
of such proceeding as authorized by the board of directors in the specific case
or as authorized or required under any provision in the articles of
incorporation or bylaws or by any applicable resolution or contract upon
receipt of an undertaking by or on behalf of a director to repay such amount
unless it shall ultimately be determined that he is entitled to be indemnified
by the corporation against such expenses. A director may also apply for
court-ordered indemnification under certain circumstances. Unless a
corporation's articles of incorporation provide otherwise, (i) an officer of a
corporation is entitled to mandatory indemnification and is entitled to apply
for court-ordered indemnification to the same extent as a director, (ii) the
corporation may indemnify and advance expenses to an officer, employee, or
agent of the corporation to the same extent as to a director and (iii) a
corporation may also indemnify and advance expenses to an officer, employee, or
agent who is not a director to the extent, consistent with public policy, that
may be provided by its articles of incorporation, bylaws, general or specific
action of its board of directors, or contract.

         In addition and separate and apart from the indemnification rights
discussed above, the NCBCA further provides that a corporation may in its
articles of incorporation or bylaws or by contract or resolution indemnify or
agree to indemnify any one or more of its directors, officers, employees, or
agents against liability and expenses in any proceeding (including without
limitation a proceeding brought by or on behalf of the corporation itself)
arising out of their status as such or their activities in any of the foregoing
capacities; provided, however, that a corporation may not indemnify or agree to
indemnify a person against liability or expenses he may incur on account of his
activities which were at the time taken known or believed by him to be clearly
in conflict with the best interests of the corporation. A corporation may
likewise and to the same extent indemnify or agree to indemnify any person who,
at the request of the corporation, is or was serving as a director, officer,
partner, trustee, employee, or agent of another foreign or domestic
corporation, partnership, joint venture, trust, or other enterprise or as a
trustee or administrator under an employee benefit plan. Any such provision for
indemnification may also include provisions for recovery from the corporation
of reasonable costs, expenses, and attorneys' fees in connection with the
enforcement of rights to indemnification and may further include provisions
establishing reasonable procedures for determining and enforcing the rights
granted therein.





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<PAGE>   83

         LSB's Bylaws provide for the mandatory indemnification, to the fullest
extent permitted by law, of any person who at any time serves or has served as
a director or officer of LSB, or in such capacity at the request of LSB for any
other entity, or as a trustee or administrator under any employee benefit plan
of LSB, in the event a claim is made or threatened against such person in, or
such person is made or threatened to be made a party to, any threatened,
pending or completed civil, criminal, administrative or investigative action,
suit or proceeding, whether or not brought by or on behalf of LSB, arising out
of such person's status as such or that person's activities in such capacity.
The indemnification provision in the LSB Bylaws covers (i) liabilities,
including payments in satisfaction of any judgment, money decree, excise tax,
fine or penalty as a result of any proceeding; and (2) litigation expenses,
including reasonable costs and expenses and attorneys' fees incurred in
connection with any proceeding and reasonable costs and expenses and attorneys'
fees incurred in connection with the enforcement of indemnification rights.
Furthermore, LSB will advance to such person his reasonable expenses incurred
in connection with any such action, suit or proceeding as authorized by the
Board of Directors in the specific case or as authorized or required under any
Bylaw upon receipt of an undertaking by or on behalf of such person to repay
such amount unless it is ultimately determined that such person is entitled to
be indemnified by LSB against such expenses.

         The LSB Board of Directors must take all such action as may be
necessary and appropriate to authorize LSB to pay the indemnification required
by the indemnification provision, including without limitation, to the extent
needed, making a good faith evaluation of the manner in which the claimant for
indemnity acted and of the reasonable amount of indemnity to such claimant.

         Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers, or persons controlling
LSB pursuant to the foregoing provisions, LSB has been informed that, in the
opinion of the SEC, such indemnification is against public policy as expressed
in the Securities Act and is therefore unenforceable.

         ONSB.  Under the NCBCA, directors and officers of ONSB would have the
same rights to indemnification as directors and officers of LSB. In addition,
the Bylaws of ONSB provide that any person who serves as a director or officer
of ONSB shall have the right to be indemnified by ONSB to the fullest extent
permitted by law against reasonable expenses, including attorney's fees,
actually and necessarily incurred in connection with any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative
or investigative, and whether or not brought by or on behalf of ONSB, and
reasonable payments made by such person in satisfaction of any judgment, money
decree, fine, penalty or settlement for which he may have become liable in any
such action, suit or proceeding.

         Furthermore, under the NCBCA, ONSB may advance to such person his
reasonable expenses incurred in connection with any such action, suit or
proceeding as authorized by the Board of Directors of ONSB in the specific case
upon the receipt of an undertaking from the person to repay such expenses if it
is ultimately determined that such person is not entitled to be indemnified by
ONSB against such expenses. ONSB's Bylaws further provide that the Board of
Directors of ONSB must take all such action as may be necessary and appropriate
to authorize ONSB to pay the indemnification required by the indemnification
provision, subject to monetary limits as established by the Board of Directors,
including without limitation, to the extent needed, making a good faith
evaluation of the manner in which the claimant for indemnity acted and of the
reasonable amount of indemnity due such claimant.





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SPECIAL MEETING OF SHAREHOLDERS

         LSB. LSB's Bylaws provide that special meetings of shareholders may be
called only by the Board of Directors or the President. Holders of LSB Stock do
not have the right to call a special meeting or to require that LSB's Board of
Directors call such a meeting. As a result, this provision, together with the
restriction on the removal of directors, would prevent a substantial
shareholder from compelling shareholder consideration of any proposal (such as
a proposal for a Business Combination) over the opposition of LSB's Board of
Directors by calling a special meeting of shareholders at which such
shareholder could replace the entire Board of Directors with nominees who were
in favor of such proposal.

         ONSB. ONSB's Bylaws provide that special meetings of shareholders may
be called by the President, the Board of Directors, or at the written request
of the holders of not less than one-tenth of all shares entitled to vote at the
meeting.

CONSTITUENCY AND STAKEHOLDER PROVISIONS

         LSB.  Neither LSB's Articles of Incorporation nor its Bylaws contain
any constituency or stakeholder provision.


         ONSB.  ONSB's Bylaws provide that, in considering the advisability of
ONSB entering into any combination, merger or other affiliation with another
corporation, the Board of Directors shall weigh the effects such affiliation
would have on ONSB's shareholders, officers, employees, customers and public.
This constituency provision of the Bylaws of ONSB may discourage or make more
difficult certain acquisition proposals and, therefore, may adversely affect
the ability of shareholders to benefit from certain transactions opposed by the
ONSB Board of Directors. The constituency provision would permit the ONSB Board
of Directors to take into account the effects of an acquisition proposal on a
broad number of constituencies and to consider any potential adverse effects in
determining whether to accept or reject such proposal.

ACTIONS BY SHAREHOLDERS WITHOUT A MEETING

         LSB. The Bylaws of LSB do not have provisions relating to actions by
shareholders without a meeting.  The NCBCA provides, however, that any action
required or permitted to be taken by LSB shareholders at a meeting of
shareholders may be taken by the unanimous written consent of the shareholders
entitled to vote on such action.

         ONSB. ONSB's Bylaws provide that any action that may be taken at a
meeting of the shareholders of ONSB may be taken without a meeting if a consent
in writing setting forth the action so taken is signed by all of the persons
who would be entitled to vote upon such action at a meeting.

SHAREHOLDER NOMINATIONS AND PROPOSALS

         LSB. Neither LSB's Articles of Incorporation nor its Bylaws provide
for a manner in which shareholders may nominate individuals for election to the
Board of Directors.  The procedure by which LSB shareholders may present
proposals for action by LSB shareholders, including nomination of individuals
for election to the Board of Directors, is governed by rules adopted under the
Exchange Act.

         ONSB. ONSB's Bylaws provide that any shareholder of ONSB may bring a
matter, including nomination of individuals for election to the Board of
Directors, before a meeting of ONSB





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<PAGE>   85

shareholders, provided that such shareholder is entitled to vote with respect
to such matter and such shareholder complies with the procedure set forth in
the Bylaws.

FAIR PRICE PROVISIONS

         LSB. The Articles of Incorporation of LSB do not contain a fair price
provision.  Fair price provisions are designed primarily to discourage attempts
to acquire companies in transactions utilizing two-tier pricing tactics, but
such provisions may affect and potentially discourage other transactions that
are not two-tier structured.

         ONSB. The Articles of Incorporation of ONSB do not contain a fair
price provision.

BUSINESS COMBINATIONS

         LSB.  The Bylaws of LSB provide that, unless a greater vote is
required by the Articles of Incorporation or law, any merger, share exchange of
the corporation or sale of all or substantially all of the corporation's assets
shall be approved only upon the affirmative vote of three-fourths of the
outstanding shares of LSB.  The requirement of a supermajority vote of
shareholders to approve certain business transactions may discourage a change
in control of LSB by allowing a minority of LSB's shareholders to prevent a
transaction favored by the majority of the shareholders.  The primary purpose
of the supermajority vote requirement, however, is to encourage negotiations
with LSB's management by groups or corporations interested in acquiring control
of LSB and to reduce the danger of a forced merger or sale of assets.

         The North Carolina Shareholder Protection Act requires, under certain
circumstances and  subject to certain exceptions, the affirmative vote of at
least 95% of the voting shares of a corporation to adopt or authorize certain
business combinations with any other entity. The 95% vote requirement does not
apply if all of certain fair price and procedural requirements are satisfied.
The North Carolina Shareholder Protection Act applies to corporations that have
a class of shares registered under Section 12 of the Exchange Act (a "public
corporation") and that have not opted out of the provisions of the North
Carolina Shareholder Protection Act. LSB's Articles provide that LSB will not
be subject to the North Carolina Shareholder Protection Act.

         The North Carolina Control Share Acquisition Act provides that in the
event any person or group acting in concert acquires certain designated
percentage interests of the total voting power of a corporation, the shares
acquired in the acquisition are not entitled to vote unless the right to vote
such shares is approved by a majority of all of the outstanding shares of the
corporation entitled to vote for the election of directors, excluding certain
"interested shares," as that term is defined by the statute. If voting rights
are granted to the control shares, other shareholders may have their shares
redeemed by the corporation at their fair value. The North Carolina Control
Share Acquisition Act applies only to a North Carolina public corporation with
certain required contacts with North Carolina (a "covered corporation"), the
bylaws or articles of incorporation of which do not opt out of the North
Carolina Control Share Acquisition Act, and does not apply to acquisitions of
stock pursuant to a merger or tender offer approved by the Board of Directors.

         ONSB. Except for the constituency and stakeholder provision discussed
above, neither ONSB's Articles of Incorporation nor its Bylaws contain a
provision relating to shareholder or Board of Director votes on business
combinations.  ONSB is subject to the North Carolina Shareholder Protection Act
and the North Carolina Control Share Acquisition Act.  The Merger, however, is
not subject to the provisions of either Act.





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<PAGE>   86

DISSENTERS' RIGHTS OF APPRAISAL

         LSB. Under the NCBCA, a shareholder is generally entitled to dissent
from, and obtain payment of the fair value of his shares in the event of: (i)
consummation of a plan of merger to which the corporation is a party, unless
either (a) shareholder approval is not required by the NCBCA or (b) such shares
are then redeemable by the corporation at a price not greater than the cash to
be received in exchange for such shares; (ii) consummation of a plan of share
exchange to which the corporation is a party as the corporation whose shares
will be acquired, unless such shares are then redeemable by the corporation at
a price not greater than the cash to be received in exchange for such shares;
(iii) consummation of a sale or exchange of substantially all of the
corporation's property other than in the usual and regular course of business,
including a sale in dissolution, but not including a sale pursuant to court
order or to a plan by which substantially all of the net proceeds of the sale
will be distributed in cash to the shareholders within one year after the date
of sale; (iv) an amendment of the articles of incorporation that materially and
adversely affects rights in respect of a dissenter's shares because it (a)
alters or abolishes a preferential right of the shares, (b) creates, alters, or
abolishes a right in respect of redemption of the shares, (c) alters or
abolishes a preemptive right of the holder of the shares to acquire shares or
other securities, (d) excludes or  limits the right of the shares to vote on
any matter, or to cumulate votes, (e) reduces the number of shares owned by the
shareholder to a fraction of a share if the fractional share so created is to
be acquired for cash under the NCBCA, or (f) changes the corporation into a
nonprofit corporation or cooperative organization; or (v) any corporate action
taken pursuant to a shareholder vote, to the extent the articles of
incorporation, bylaws, or a resolution of the board of directors provide that
voting or nonvoting shareholders are entitled to dissent and obtain payment for
their shares.  LSB's Articles of Incorporation and Bylaws do not provide for
any such additional dissenters' rights.

         ONSB.  Under the NCBCA, an ONSB shareholder is entitled to dissent
from, and obtain fair payment of the value of his shares to the same extent
discussed above for LSB shareholders. ONSB's Articles of Incorporation and
Bylaws do not provide for any additional dissenters' rights.

SHAREHOLDERS' RIGHTS TO EXAMINE BOOKS AND RECORDS

         LSB. The NCBCA provides that a shareholder may inspect the books and
records of a corporation upon a good faith written demand stating the purpose
of the inspection, if such purpose is reasonably related to such person's
interest as a shareholder.

         ONSB. ONSB shareholders have the same rights as LSB shareholders under
the NCBCA to inspect the books and records of ONSB upon a good faith written
demand stating the purpose of the inspection, if such purpose is reasonably
related to such person's interest as a shareholder.

DIVIDENDS

         LSB. Section 53-87 of the North Carolina General Statutes generally
allows LSB's subsidiary depository institution to pay cash dividends to LSB
only out of the subsidiary depository institution's undivided profits and only
if such subsidiary depository institution's surplus is equal to at least 50% of
its paid-in capital stock. Substantially all of the funds available for the
payment of dividends by LSB are derived from its subsidiary depository
institution.  There are various other statutory limitations on the ability of
LSB's subsidiary depository institutions to pay dividends to LSB. See "CERTAIN
REGULATORY CONSIDERATIONS--Payment of Dividends."

         ONSB. The ability of ONSB to pay dividends is subject to statutory and
regulatory restrictions on the payment of cash dividends, including the
requirement under North Carolina banking laws that





                                       67
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cash dividends be paid only out of undivided profits and only if the bank has
surplus of a specified level as discussed above. Federal bank regulatory
authorities also have the general authority to limit the dividends paid by
insured banks if such payment may be deemed to constitute an unsafe or unsound
practice. See "CERTAIN REGULATORY CONSIDERATIONS--Payment of Dividends."





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                             INFORMATION ABOUT ONSB

GENERAL

         ONSB is a North Carolina-chartered commercial bank headquartered in
Winston-Salem, North Carolina, with seven banking offices located in
Winston-Salem and the surrounding areas of Forsyth and Stokes Counties.  As of
March 31, 1997, ONSB had total consolidated assets of approximately $137.3
million, total consolidated deposits of approximately $112.2 million, and total
consolidated shareholders' equity of approximately $11.4 million. ONSB offers a
broad range of banking and banking-related services.

         ONSB was organized under the laws of the state of North Carolina and
commenced operations in 1989.  In December 1995, ONSB acquired Piedmont
BancShares Corporation ("Piedmont") and its wholly-owned subsidiary, Enterprise
Bank and Trust Company  ("Enterprise"), in a merger transaction pursuant to
which Piedmont and Enterprise merged into ONSB in exchange for shares of ONSB
Stock.  The principal executive office of ONSB is located at 161 South
Stratford Road, Winston-Salem, North Carolina  27104, and its telephone number
at such address is (910) 631-3900.  Additional information with respect to ONSB
is included in documents incorporated by reference in this Proxy Statement. See
"AVAILABLE INFORMATION," "DOCUMENTS INCORPORATED BY REFERENCE" and "CERTAIN
REGULATORY CONSIDERATIONS."

SECURITY OWNERSHIP OF MANAGEMENT

         Information regarding the ownership of securities of ONSB by
management of ONSB is incorporated by reference to ONSB's Annual Report on Form
10-KSB for the year ended December 31, 1996.  At May 31, 1997, directors and
executive officers of ONSB beneficially owned an aggregate of 240,007 shares of
ONSB Stock, which was 15.2% of the ONSB Stock then outstanding.





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                             INFORMATION ABOUT LSB

GENERAL

         LSB, a North Carolina corporation, is a bank holding company
registered with the Federal Reserve under the BHC Act. LSB owns all of the
outstanding shares of LSB Bank, a North Carolina bank corporation. LSB, through
LSB Bank and its subsidiaries, offers a full range of financial services
through 14 banking offices located in Davidson County, North Carolina.  As of
March 31, 1997, LSB had total consolidated assets of approximately $431.6
million, total consolidated deposits of approximately $ 362.0 million, and
total consolidated shareholders' equity of approximately $ 52.6 million.

         LSB Bank is a North Carolina bank with deposits insured by the Bank
Insurance Fund of the FDIC.  LSB Bank offers a wide range of financial services
in the areas of commercial banking, savings and trusts, including the
acceptance of deposits, corporate cash management, discount brokerage, IRA
plans, secured and unsecured loans and trust functions.  LSB Bank operates the
only independent trust department in Davidson County, providing estate
planning, estate and trust administration, IRA trusts, personal investment
accounts and pension and profit-sharing trusts.  LSB Bank also operates two
wholly-owned non-bank subsidiaries:  Peoples Finance Company of Lexington, Inc.
("Peoples Finance") and LSB Financial Services, Inc. ("LSB Financial
Services").  Peoples Finance is a finance company licensed under the laws of
the State of North Carolina that offers secured and unsecured loans to
individuals up to a maximum of $10,000, as well as dealer originated loans.
LSB Financial Services is a North Carolina corporation that offers a full range
of uninsured, nondeposit investment products, including mutual funds,
annuities, stocks and bonds.

         The principal executive offices of LSB and LSB Bank are located at One
LSB Plaza, Lexington, North Carolina 27292, and its telephone number at such
address is (910) 248-6500.  Additional information with respect to LSB and its
subsidiaries is included in documents incorporated by reference in this Proxy
Statement. See "AVAILABLE INFORMATION," "DOCUMENTS INCORPORATED BY REFERENCE,"
and "CERTAIN REGULATORY CONSIDERATIONS."

SECURITY OWNERSHIP OF MANAGEMENT

         Information regarding the ownership of securities of LSB by management
of LSB is incorporated herein by reference to LSB's Annual Report on Form 10-K
for the year ended December 31, 1996.  At May 31, 1997, directors and
executive officers of LSB beneficially owned an aggregate of 224,673 shares of
LSB Stock, which was 4.2% of the LSB Stock then outstanding. In addition, at
May 31, 1997, the LSB Bank Trust Department held approximately 176,556
shares, or 3.3%, of  the then outstanding shares of LSB Stock.





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                       CERTAIN REGULATORY CONSIDERATIONS

         The following discussion sets forth certain of the material elements
of the regulatory framework applicable to banks and bank holding companies and
provides certain specific information related to LSB and ONSB.

GENERAL

         LSB is a bank holding company registered with the Federal Reserve
under the BHC Act. As such, LSB and its non-bank subsidiaries are subject to
the supervision, examination and reporting requirements of the BHC Act and the
regulations of the Federal Reserve.

         The BHC Act requires every bank holding company to obtain the prior
approval of the Federal Reserve before: (i) it may acquire direct or indirect
ownership or control of any voting shares of any bank if, after such
acquisition, the bank holding company will directly or indirectly own or
control more than 5.0% of the voting shares of the bank; (ii) it or any of its
subsidiaries, other than a  bank, may acquire all or substantially all of the
assets of any bank; or (iii) it may merge or consolidate with any other bank
holding company.

         The BHC Act further provides that the Federal Reserve may not approve
any acquisition, merger or consolidation that would result in a monopoly or
would be in furtherance of any combination or conspiracy to monopolize or
attempt to monopolize the business of banking in any part of the United States,
or the effect of which may be substantially to lessen competition or to tend to
create a monopoly in any section of the country, or that in any other manner
would be in restraint of trade, unless it finds the anticompetitive effects of
the proposed transaction are clearly outweighed in the public interest by the
probable effect of the transaction in meeting the convenience and needs of the
community to be served. The Federal Reserve is also required to consider the
financial and managerial resources and future prospects of the bank holding
companies and banks concerned and the convenience and needs of the community to
be served.  Consideration of financial resources generally focuses on capital
adequacy, which is discussed below.

         The BHC Act, as amended by the interstate banking provisions of the
Riegle-Neal Interstate Banking and Branching Efficiency Act of 1994 (Interstate
Banking Act), which became effective on September 29, 1995, repealed the prior
statutory restrictions on interstate acquisitions of banks by bank holding
companies, such that LSB and any other bank holding company located in North
Carolina may now acquire a bank located in any other state, and any bank
holding company located outside North Carolina may lawfully acquire any North
Carolina-based bank, regardless of state law to the contrary, in either case
subject to certain deposit-percentage limitations, aging requirements, and
other restrictions.  The Interstate Banking Act also generally provides that,
after June 1, 1997, national and state-chartered banks may branch interstate
through acquisitions of banks in other states. By adopting legislation prior to
that  date, a state has the ability either to "opt in" and accelerate the date
after which interstate branching is permissible or "opt out" and prohibit
interstate branching altogether. North Carolina has enacted "opt in"
legislation that permits interstate branching in North Carolina on a reciprocal
basis through June 1, 1997, and on an unlimited basis thereafter.  Accordingly,
the banking subsidiary of LSB and ONSB are currently able to establish and
operate branches in other states that have also enacted "opt in" legislation.

         The BHC Act generally prohibits LSB from engaging in activities other
than banking or managing or controlling banks or other permissible subsidiaries
and from acquiring or retaining direct or indirect control of any company
engaged in any activities other than those activities determined by the





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Federal Reserve to be so closely related to banking or managing or controlling
banks as to be a proper incident thereto.  In determining whether a particular
activity is permissible, the Federal Reserve must consider whether the
performance of such an activity reasonably can be expected to produce benefits
to the public, such as greater convenience, increased competition, or gains in
efficiency, that outweigh possible adverse effects, such as undue concentration
of resources, decreased or unfair competition, conflicts of interest, or
unsound banking practices.

         For example, factoring accounts receivable, acquiring or servicing
loans, leasing personal property, conducting discount securities brokerage
activities, performing certain data processing services, acting as agent or
broker in selling credit life insurance and certain other types of insurance in
connection with credit transactions, and performing certain insurance
underwriting activities all have been determined by the Federal Reserve to be
permissible activities of bank holding companies. Despite prior approval, the
Federal Reserve has the power to order a holding company or  its subsidiaries
to terminate any activity or to terminate its ownership or control of any
subsidiary when it has reasonable cause to believe that continuation of such
activity or such ownership or control constitutes a serious risk to the
financial safety, soundness, or stability of any bank subsidiary of that bank
holding company and is inconsistent with sound banking principles.

         LSB Bank and ONSB are both members of the FDIC, and as such, their
deposits are insured by the FDIC to the maximum extent provided by law. LSB
Bank and ONSB are both subject to numerous state and federal statutes and
regulations that affect their business, activities, and operations. As a North
Carolina-chartered bank that is not a member of the Federal Reserve System, LSB
Bank is supervised and examined by the FDIC and the Commissioner. ONSB, a North
Carolina-chartered bank and member of the Federal Reserve System, is supervised
and examined by the Federal Reserve and the Commissioner. The federal banking
agencies and the Commissioner regularly examine the operations of LSB Bank and
ONSB and are given authority to approve or disapprove mergers, consolidations,
the establishment of branches, and similar corporate actions, and to prevent
the commencement or continuation of unsafe or unsound banking practices or
other violations of law. The federal banking agencies and the Commissioner
regulate and monitor all areas of the operations of LSB Bank and ONSB,
including loans, mortgages, issuances of securities, capital adequacy, loss
reserves, and compliance with the Community Reinvestment Act of 1977, as
amended (the "CRA") and other laws and regulations.  Interest and certain other
charges collected and contracted for by LSB Bank and ONSB are also subject to
state usury laws and certain federal laws concerning interest rates.

COMMUNITY REINVESTMENT

         ONSB and LSB are subject to the provisions of the CRA and the federal
banking agencies' implementing regulations. Under the CRA, all financial
institutions have a continuing and affirmative obligation consistent with their
safe and sound operation to help meet the credit needs for their entire
communities, including low- and moderate-income neighborhoods. The CRA does not
establish specific lending requirements or programs for financial institutions,
nor does it limit an institution's discretion to develop the types of products
and services that it believes are best suited to its particular community,
consistent with the CRA. The CRA requires a depository institution's federal
regulator, in connection with its examination of the institution, to assess the
institution's record in assessing and meeting the credit needs of the community
served by that institution, including low- and moderate-income neighborhoods.
The regulatory agency's assessment of the institution's record is made
available to the public. Further, such assessment is required of any
institution which has applied to: (i) charter a national bank; (ii) obtain
deposit insurance coverage for a newly chartered institution; (iii) establish a
new branch office that will accept deposits; (iv) relocate an office; or (v)
merge or consolidate with, or acquire the assets or assume the liabilities of,
a federally regulated financial institution. In the case of a bank holding
company applying for approval to acquire a bank or other bank holding company,
the





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Federal Reserve will assess the records of each subsidiary depository
institution of the applicant bank holding company, and such records may be the
basis for denying the application. Following their most recent CRA compliance
examinations, LSB Bank received an "Outstanding" CRA rating and ONSB received a
"Satisfactory" CRA rating.

         In April 1995, the federal banking agencies adopted revised CRA
regulations in order to provide clearer guidance to depository institutions on
the nature and extent of their CRA obligations and the methods by which those
obligations would be assessed and enforced. Under the new CRA regulations, the
evaluation system used to judge an institution's CRA performance consists of
three tests: a lending test; an investment test; and a service test. Each of
these tests will be applied by the institution's federal regulator in an
assessment context that would take into account such factors as: (i)
demographic data about the community; (ii) the institution's capacity and
constraints; (iii) the institution's product offerings and business strategy;
(iv) data on the prior performance of the institution and similarly-situated
lenders; and (v) information about lending, investment and service
opportunities in the institution's assessment areas. The new lending test - the
most important of the three tests for all institutions other than wholesale and
limited purpose (e.g., credit card) banks - will evaluate an institution's
record of helping to meet credit needs of its assessment areas through its
lending activities as measured by its home mortgage loans, small business and
farm loans, community development loans, and, at the option of the institution,
its consumer loans. The institution's regulator will weigh each of these
lending categories to reflect its relative importance to the institution's
overall business and, in the case of community development loans, the
characteristics and needs of the institution's service area and the
opportunities available for this type of lending. Assessment criteria for the
lending test will include: (i) geographic distribution of the institution's
lending; (ii) distribution of the institution's home mortgage, small business,
farm and consumer loans among different economic segments of the community;
(iii) the number and amount of home mortgage, consumer, small business and
small farm loans made by the institution; (iv) the number and amount of
community development loans outstanding, and (v) the institution's use of
innovative or flexible lending practices to meet the needs of low-to-moderate
income individuals and neighborhoods. At the election of an institution, or if
particular circumstances so warrant, the banking agencies will take into
account in making their assessments lending by the institution's affiliates  as
well as community development loans made by the lending consortia and other
lenders in which the institution has invested. As part of the new regulation,
all financial institutions will be required to report data on their small
business and small farm loans as well as their home mortgage loans, which are
currently required to be reported under the Home Mortgage Disclosure Act.

         The focus of the investment test will be the degree to which the
institution is helping to meet the credit needs of its service area through
qualified investments that (i) benefit low-to-moderate income individuals and
small businesses or farms, (ii) address affordable housing needs, or (iii)
involve donations of branch offices to minority or women's depository
institutions. Assessment of an institution's performance under the investment
test will be based upon the dollar amount of the institution's qualified
investments, its use of innovative or complex techniques to support community
development initiatives, the degree to which the qualified investments are
routinely provided by private investors, and its responsiveness  to credit and
community development needs. The service test will evaluate an institution's
systems for delivering retail banking services, taking into account such
factors as (i) the geographic distribution of the institution's branch offices
and ATMs, (ii) the institution's record of opening and closing branch offices
and ATMs, and (iii) the availability of alternative product delivery systems
such as home banking and loan production offices in low-to-moderate income
areas. The federal regulators also will consider an institution's community
development service as part of the service test.





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         A financial institution will have the option of having its CRA
performance evaluated based on a strategic plan of up to five years in length
that it had developed in cooperation with local community groups. In order to
be rated under a strategic plan, the institution will be required to obtain the
prior approval of its federal regulator.

         The joint agency CRA regulations provide that an institution evaluated
under a given test will receive one of five ratings for that test: outstanding,
high satisfactory, low satisfactory, needs to improve, or substantial
noncompliance. An institution will then receive a certain number of points for
its rating on each test, and the points will be combined to produce an overall
composite rating of either outstanding, satisfactory, needs to improve, or
substantial noncompliance. Under the agencies' rating guidelines, an
institution that receives an "outstanding" rating on the lending test will
receive an overall rating of at least "satisfactory", and no institution can
receive an overall rating of "satisfactory" unless it receives a rating of at
least "low satisfactory" on its lending test. In addition, evidence of
discriminatory or other  illegal credit practices would adversely affect an
institution's overall rating.  Under the new regulations, an institution's CRA
rating would continue to be taken into account by its regulator in considering
various types of applications.

PAYMENT OF DIVIDENDS

         LSB is a legal entity separate and distinct from its banking and other
subsidiaries. The principal source of cash flow of LSB, including cash flow to
pay dividends to its shareholders, is dividends from LSB Bank. There are
statutory and regulatory limitations on the payment of such dividends to LSB,
as well as by LSB and ONSB to their shareholders.

         LSB is not subject to any direct legal or regulatory restrictions on
dividends (other than the requirements under the NCBCA that distributions may
not be made if, after giving them effect, the corporation would not be able to
pay its debts as they become due in the usual course of business or the
corporation's total assets would be less than its liabilities).  LSB Bank and
ONSB, as North Carolina-chartered banks, are subject to North Carolina
statutory and regulatory restrictions on the payment of cash dividends,
including the requirement that cash dividends be paid only out of undivided
profits and only if the bank has surplus of a specified level. If a bank having
capital stock of $15,000 or more has surplus of less than 50% of its paid-in
capital stock, no cash dividend may be declared until the bank has transferred
from undivided profits to surplus 25% of its undivided profits or any lesser
percentage sufficient to raise the bank's surplus to an amount equal to 50% of
its paid-in capital stock.

         If, in the opinion of the federal banking regulator, a bank under its
jurisdiction is engaged in or is about to engage in an unsafe or unsound
practice (which, depending on the financial condition of the depository
institution, could include the payment of dividends), such authority may
require, after notice and hearing, that such institution cease and desist from
such practice. The federal banking agencies have indicated that paying
dividends that deplete a depository institution's capital base to an inadequate
level would be an unsafe and unsound banking practice. Under the Federal
Deposit Insurance Corporation Improvement Act of 1991 ("FDICIA"), a depository
institution may not pay any dividend if payment would cause it to become
undercapitalized or if it already is undercapitalized. See "--Prompt Corrective
Action." Moreover, the federal agencies have issued policy statements that
provide that as a matter of prudent banking, bank holding companies and insured
banks should generally only pay dividends out of current operating earnings.

         At March 31, 1997, under dividend restrictions imposed under federal
and state laws, LSB Bank and ONSB, without obtaining governmental approvals,
could declare aggregate dividends of approximately $39.3 million and $641,000,
respectively.





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<PAGE>   94

         The payment of dividends by LSB and ONSB may also be affected or
limited by other factors, such as the requirement to maintain adequate capital
above regulatory guidelines.

CAPITAL ADEQUACY

         LSB, LSB Bank and ONSB are required to comply with the capital
adequacy standards established by the Federal Reserve in the case of LSB and
ONSB and the FDIC in the case of LSB Bank. There are two basic measures of
capital adequacy for bank holding companies and their banking subsidiaries that
have been promulgated by the Federal Reserve and the FDIC: a risk-based measure
and a leverage measure. All applicable capital standards must be satisfied for
a bank holding company or a bank to be considered in compliance.

         The risk-based capital standards are designed to make regulatory
capital requirements more sensitive to differences in risk profile among banks
and bank holding companies, to account for off-balance-sheet exposure, and to
minimize disincentives for holding liquid assets. Assets and off-balance-sheet
items are assigned to broad risk categories, each with appropriate weights. The
resulting capital ratios represent capital as a percentage of total
risk-weighted assets and off-balance-sheet items.

         The risk-based capital guidelines establish a minimum ratio
("Risk-Based Capital Ratio") of total capital ("Total Capital") to
risk-weighted assets (including certain off-balance-sheet items, such as
standby letters of credit) of 8.0%. At least half of Total Capital must
comprise common stock, minority interests in the equity accounts of
consolidated subsidiaries, noncumulative perpetual preferred stock, and a
limited amount of cumulative perpetual preferred stock, less goodwill and
certain other intangible assets ("Tier 1 Capital"). The remainder may consist
of subordinated and other qualifying debt, other preferred stock, and a limited
amount of loan loss reserves ("Tier 2 Capital").  At March 31, 1997, LSB's
consolidated Risk-Based Capital Ratio and its Tier 1 Risk-Based Capital Ratio
(i.e., the ratio of Tier 1 Capital to risk-weighted  assets) were 21.53% and
20.34%, respectively, and ONSB's Risk-Based Capital and Tier 1 Risk-Based
Capital Ratios were 12.3% and 11.2% , respectively.

         In addition, the Federal Reserve has established minimum leverage
ratio guidelines for bank holding companies.  These guidelines provide for a
minimum ratio (the "Leverage Ratio") of Tier 1 Capital to average assets, less
goodwill and certain other intangible assets, of 3.0% for bank holding
companies that meet certain specified criteria, including having the highest
regulatory rating. All other bank holding companies generally are required to
maintain a Leverage Ratio of at least 3.0%, plus an additional cushion of 100
to 200 basis points. LSB's and ONSB's respective Leverage Ratios at March 31,
1997, were 12.34% and 7.9%. The guidelines also provide that bank holding
companies experiencing internal growth or making acquisitions will be expected
to maintain strong capital positions substantially above the minimum
supervisory levels without significant reliance on intangible assets.
Furthermore, the Federal Reserve has indicated that it will consider a
"tangible Tier 1 Capital Leverage Ratio" (deducting all intangibles) and other
indicia of capital strength in evaluating proposals for expansion or new
activities.

         The risk-based and leverage capital requirements adopted by the FDIC
and the Federal Reserve for LSB Bank and ONSB, respectively, are substantially
similar to those adopted by the Federal Reserve for bank holding companies.
Both LSB Bank and ONSB were in compliance with applicable minimum capital
requirements as of March 31, 1997. Neither LSB, LSB Bank, nor ONSB has been
advised by any federal banking agency of any specific minimum capital ratio
requirement applicable to it.

         Failure to meet capital guidelines could subject a bank to a variety
of enforcement remedies, including issuance of a capital directive, the
termination of deposit insurance by the FDIC, a prohibition





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on the taking of brokered deposits, and certain other restrictions on its
business. As described below, substantial additional restrictions can be
imposed upon FDIC-insured depository institutions that fail to meet applicable
capital requirements. See "--Prompt Corrective Action."

         The federal bank regulators continue to indicate their desire to raise
capital requirements applicable to banking organizations beyond their current
levels. In this regard, the federal banking agencies have, pursuant to FDICIA,
adopted an amendment to the risk-based capital standards that incorporates a
measure for market risk, would calculate the change in an institution's net
economic value attributable to increases and decreases in market interest rates
and would require banks with excessive interest rate risk exposure to hold
additional amounts of capital against such exposures.  The effect of the
amendment is that any bank or bank holding company with significant exposure to
market risk must measure that risk using its own internal value at risk model
and hold a commensurate amount of capital.  Compliance with the amended
procedure is required by January 1, 1998.

SUPPORT OF SUBSIDIARY BANKS

         Under Federal Reserve policy, LSB is expected to act as a source of
financial strength for, and to commit resources to support, LSB Bank. This
support may be required at times when, absent such Federal Reserve policy, LSB
may not be inclined to provide it. In addition, any capital loans by a bank
holding company to any of its banking subsidiaries are subordinate in right of
payment to deposits and to certain other indebtedness of such banks. In the
event of a bank holding company's bankruptcy, any commitment by the bank
holding company to a federal bank regulatory agency to maintain the capital of
a banking subsidiary will be assumed by the bankruptcy trustee and entitled to
a priority of payment. In addition, the Federal Deposit Insurance Act provides
that any financial institution whose deposits are insured by the FDIC generally
shall be liable for any loss incurred by the FDIC in connection with the
default of, or any assistance provided by the FDIC to, a commonly controlled
financial institution.

PROMPT CORRECTIVE ACTION

         FDICIA establishes a system of prompt corrective action to resolve the
problems of undercapitalized institutions. Under this system the federal
banking regulators have established five capital categories (well capitalized,
adequately capitalized, undercapitalized, significantly undercapitalized, and
critically undercapitalized) and are required to take certain mandatory
supervisory actions, and are authorized to take other discretionary actions,
with respect to institutions in the three undercapitalized categories, the
severity of which will depend upon the capital category in which the
institution is placed. Generally, subject to a narrow exception, FDICIA
requires the banking regulator to appoint a receiver or conservator for an
institution that is critically undercapitalized.

         Under the final agency rules implementing the prompt corrective action
provisions, an institution that (i) has a total Risk-Based Capital Ratio of 10%
or greater, a Tier 1 Risk-Based Capital Ratio of 6.0% or greater, and a
Leverage Ratio of 5.0% or greater and (ii) is not subject to any written
agreement, order, capital directive, or prompt corrective action directive
issued by the appropriate federal banking agency is deemed to be well
capitalized. An institution with a total Risk-Based Capital Ratio of 8.0% or
greater, a Tier 1 Risk-Based Capital Ratio of 4.0% or greater, and a Leverage
Ratio of 4.0% or greater is considered to be adequately capitalized. A
depository institution that has a total Risk-Based Capital Ratio of less than
8.0%, a Tier 1 Risk-Based Capital Ratio of less than 4.0%, or a Leverage Ratio
of less than 4.0% is considered to be undercapitalized. A depository
institution that has a total Risk-Based Capital Ratio of less than 6.0%, a Tier
1 Risk-Based Capital Ratio of less than 3.0%, or a Leverage Ratio of less than
3.0%. is considered to be significantly undercapitalized, and an institution
that has a tangible equity capital to assets ratio equal to or less than 2.0%
is deemed to be critically undercapitalized. For purposes of the regulation,
the term "tangible equity" includes core capital elements counted as Tier 1





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Capital for purposes of the risk-based capital standards, plus the amount of
outstanding cumulative perpetual preferred stock (including related surplus),
minus all intangible assets with certain exceptions. A depository institution
may be deemed to be in a capitalization category that is lower than is
indicated by its actual capital position if it receives a less than
satisfactory examination rating or if the agency has determined, after notice
and opportunity for a hearing, that the institution is in an unsafe or unsound
condition.

         An institution that is categorized as undercapitalized, significantly
undercapitalized, or critically undercapitalized is required to submit an
acceptable capital restoration plan to its appropriate federal banking agency.
Under FDICIA, a bank holding company must guarantee that a subsidiary
depository institution meet its capital restoration plan, subject to certain
limitations. The obligation of a controlling bank holding company under FDICIA
to fund a capital restoration plan is limited to the lesser of 5.0% of an
undercapitalized subsidiary's assets or the amount required to meet regulatory
capital requirements. An undercapitalized institution is also generally
prohibited from increasing its average total assets, making acquisitions,
establishing any branches, or engaging in any new line of business, except in
accordance with an accepted capital restoration plan or with the approval of
the FDIC. In addition, the appropriate federal banking agency is given
authority with respect to any undercapitalized depository institution to take
any of the actions it is required to or may take with respect to a
significantly undercapitalized institution as described below if it determines
"that those actions are necessary to carry out the purpose" of the prompt
corrective provisions.

         For those institutions that are significantly undercapitalized or
undercapitalized and either fail to submit an acceptable capital restoration
plan or fail to implement in any material respect an approved capital
restoration plan, the appropriate federal banking agency must require the
institution to take one or more of the following actions: (i) sell enough
shares, including voting shares, to become adequately capitalized; (ii) merge
with (or be sold to) another institution (or holding company), but only if
grounds exist for appointing a conservator or receiver; (iii) restrict certain
transactions with banking affiliates as if the "sister bank" exception to the
requirements of Section 23A of the Federal Reserve Act did not exist; (iv)
otherwise restrict transactions with bank or non-bank affiliates; (v) restrict
interest rates that the institution pays on deposits to prevailing rates in the
institution's region as determined by the agency; (vi) restrict asset growth or
reduce total assets; (vii) alter, reduce, or terminate activities that pose
excessive risk; (viii) hold a new election of directors; (ix) dismiss any
director or senior executive officer who held office for more than 180 days
immediately before the institution became undercapitalized, provided that in
requiring dismissal of a director or senior officer, the agency must comply
with certain procedural requirements, including the opportunity for an appeal
in which the director or officer will have the burden of proving his or her
value to the institution; (x) employ "qualified'' senior executive officers;
(xi) cease accepting deposits from correspondent depository institutions; (xii)
divest certain non-depository affiliates that pose a significant risk to the
institution; (xiii) be divested by a parent holding company; (xiv) prohibit a
bank holding company from making a capital distribution without Federal Reserve
approval; or (xv) require the bank's parent to divest itself of the institution
if the appropriate federal agency for the company determines that divestiture
would improve the bank's financial condition and future prospects.  In
addition, without the prior approval of the appropriate federal banking agency,
a significantly undercapitalized institution may not pay any bonus to any
senior executive officer or increase the rate of compensation for such an
officer.  The appropriate federal agency has additional powers with regard to
critically undercapitalized institutions, which include the authority to
appoint a receiver or conservator for the institution.

         At March 31, 1997, both LSB Bank and ONSB had the requisite capital
levels to qualify as well capitalized under the regulations implementing the
prompt corrective action provisions of FDICIA.





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<PAGE>   97


FDIC INSURANCE ASSESSMENTS

         FDIC insurance premiums are based on an assessment system for insured
depository institutions that takes into account the risks attributable to
different categories and concentrations of assets and liabilities. The system
assigns an institution to one of three capital categories: (i) well
capitalized; (ii) adequately capitalized; and (iii) undercapitalized. These
three categories are substantially similar to the prompt corrective action
categories described above, with the undercapitalized category including
institutions that are undercapitalized, significantly undercapitalized, and
critically undercapitalized for prompt corrective action purposes. An
institution is also assigned by the FDIC to one of three supervisory subgroups
within each capital group. The supervisory subgroup to which an institution is
assigned is based on the FDIC's consideration of a supervisory evaluation
provided to the FDIC by the institution's primary federal regulator.  The FDIC
also considers information that it determines to be relevant to the
institution's financial condition and the risk posed to the deposit insurance
funds (which may include, if applicable, information provided by the
institution's state supervisor). An institution's insurance assessment rate is
then determined based on the capital group and supervisory subgroup to which it
is assigned. Under the risk-based assessment system there are nine assessment
risk classifications (i.e., combinations of capital groups and supervisory
subgroups) to which different assessment rates are applied. Assessment rates
for members of both the Bank Insurance Fund ("BIF") and the Savings Association
Insurance Fund ("SAIF") for the first half of 1995, as they had been during
1994, ranged from 23 basis points (0.23% of deposits) for an institution in the
highest category (i.e., "well capitalized" and "healthy") to 31 basis points
(0.31% of deposits) for an institution in the lowest category (i.e.,
"undercapitalized" and "substantial supervisory concern"). These rates were
established for both funds to achieve a designated ratio of reserves to insured
deposits (i.e., 1.25%) within a specified period of time.

         Once the designated ratio for the BIF was reached during May 1995, the
FDIC was authorized to reduce the minimum assessment rate below 23 basis points
and to set future assessment rates at such levels that would maintain the BIF's
reserve ratio at the designated level. In August 1995, the FDIC adopted final
regulations reducing the assessment rates for BIF-member banks. Under the
revised schedule, BIF-insured banks, starting with the second half of 1995,
paid assessments ranging from 4.0 basis points to 31 basis points, with an
average assessment rate of 4.5 basis points. At the same time, the FDIC elected
to retain the pre-existing assessment rate of 23 to 31 basis points for SAIF
members for the foreseeable future given the undercapitalized nature of that
insurance fund. More recently, on November 14, 1995, the FDIC announced that,
beginning in 1996, it would further reduce the deposit insurance premiums for
BIF members in the highest capital and supervisory categories to $2,000 per
year, regardless of deposit size.  Because the continued assessment of
BIF-insured institutions in accordance with the BIF rate schedule would have
resulted in a designated reserve ratio in excess of that regarded by the FDIC
as necessary, the FDIC has adopted a temporary adjustment to the BIF rate
schedule.  The resulting adjusted rates, which are now in effect, range from 0
to 27 basis points.

         In September 1996, Congress enacted the Deposit Insurance Funds Act to
recapitalize the SAIF.  The legislation required SAIF-insured depository
institutions to pay a one time assessment of $4.7 billion to the SAIF in order
to raise its coverage to the "designated reserve ratio" of 1.25% prescribed by
the FDIA.  As a result, SAIF premiums were reduced beginning in 1997.  The
current rate schedule is identical to that of BIF-insured institutions and
ranges from 0 to 27 basis points.  In addition, the legislation also requires
BIF-insured members to pay an assessment to the Financing Corporation (FICO).
This assessment, which is currently approximately 1.3 basis points, is separate
and apart from the BIF assessment.





                                       78
<PAGE>   98

         Under the FDIA, insurance of deposits may be terminated by the FDIC
upon a finding that the institution has engaged in unsafe and unsound
practices, is in an unsafe or unsound condition to continue operations, or has
violated any applicable law, regulation, rule, order, or condition imposed by
the FDIC.

SAFETY AND SOUNDNESS STANDARDS

         The FDICIA requires the federal bank regulatory agencies to prescribe
standards, by regulations or guidelines, relating to internal controls,
information systems and internal audit systems, loan documentation, credit
underwriting, interest rate risk exposure, asset growth, asset quality,
earnings, stock valuation and compensation, fees and benefits and such other
operational and managerial standards as the agencies deem appropriate. The
federal bank regulatory agencies have adopted a set of guidelines prescribing
safety and soundness standards pursuant to FDICIA, as amended. The guidelines
establish operational and managerial standards relating to internal  controls
and information systems, internal audit systems, loan documentation, credit
underwriting, interest rate exposure, asset growth and compensation, fees, and
benefits. In general, the guidelines require, among other things, appropriate
systems and practices to identify and manage the risks and exposures specified
in the guidelines. The guidelines prohibit excessive compensation as an unsafe
and unsound practice and describe compensation as excessive when the amounts
paid are unreasonable or disproportionate to the services performed by an
executive officer, employee, director, or principal shareholders. The federal
banking agencies determined that stock valuation standards were not
appropriate. In addition, the agencies adopted regulations that authorize, but
do not require, an agency to order an institution that has been given notice by
an agency that it is in violation of a safety and soundness standard to submit
a compliance plan. If, after being so notified, an institution fails to submit
an acceptable compliance plan, the agency must issue an order directing action
to correct the deficiency and may issue an order directing other actions of the
types to which an undercapitalized association is subject under the prompt
correction action provisions of FDICIA. See "--Prompt Corrective Action."  If
an institution fails to comply with such an order, the agency may seek to
enforce such order in judicial proceedings and to impose civil money penalties.
The federal bank regulatory agencies also proposed guidelines for asset quality
and earnings standards, but have not yet adopted such standards.

DEPOSITOR PREFERENCE

         The Omnibus Budget Reconciliation Act of 1993 provides that deposits
and certain claims for administrative expenses and employee compensation
against an insured depository institution would be afforded a priority over
other general unsecured claims against such an institution in the "liquidation
or other resolution" of such an institution by any receiver.





                                       79
<PAGE>   99


                        DESCRIPTION OF LSB CAPITAL STOCK

         LSB is authorized to issue 10,000,000 shares of LSB Stock, of which
5,405,177 shares were issued and outstanding as of June 17, 1997.  The shares
of LSB Stock are nonassessable. In the event of the liquidation of LSB, holders
of LSB Stock would be entitled to share ratably in any of the assets or funds
of LSB that are available for distribution to LSB shareholders after the
satisfaction of LSB's liabilities (or after adequate provision is made
therefor) and after preferences of any outstanding preferred stock.

         Holders of LSB Stock are entitled to receive such dividends as may be
declared by the Board of Directors out of funds legally available therefor. The
ability of LSB to pay dividends is affected by the ability of its subsidiary
depository institution to pay dividends, which is limited by applicable
regulatory requirements and capital guidelines.  At March 31, 1997, under such
requirements and guidelines, LSB's subsidiary depository institution had $39.3
million of undivided profits legally available for the payment of dividends.
See "CERTAIN REGULATORY CONSIDERATIONS--Payment of Dividends."

         For a further description of LSB Stock, see "EFFECT OF THE MERGER ON
RIGHTS OF SHAREHOLDERS."

                                 OTHER MATTERS

         As of the date of this Proxy Statement, the Boards of Directors of
ONSB and LSB know of no matters that will be presented for consideration at the
ONSB Special Meeting or LSB Special Meeting other than as described in this
Proxy Statement. However, if any other matters shall properly come before the
ONSB Special Meeting or LSB Special Meeting or any adjournments thereof and be
voted upon, the enclosed respective proxies shall be deemed to confer
discretionary authority to the individuals named as proxies therein to vote the
shares represented by such proxies as to any such matters.

                                    EXPERTS

         The consolidated financial statements of LSB Bancshares, Inc. and
subsidiaries as of December 31, 1996 and 1995, and for each of the years in the
three-year period ended December 31, 1996, have been incorporated by reference
herein and in the Registration Statement in reliance upon the report of
Turlington and Company, L.L.P., independent certified public accountants,
incorporated by reference herein, and upon the authority of said firm as
experts in accounting and auditing.

         The consolidated financial statements of ONSB as of December 31, 1996
and 1995, and for each of the years in the three-year period ended December 31,
1996, have been incorporated by reference herein and in the Registration
Statement in reliance upon the report of Larrowe, Cardwell & Company, LC,
independent certified public accountants, incorporated by reference herein, and
upon the authority of said firm as experts in accounting and auditing.

                                    OPINIONS

         The legality of the shares of LSB Stock to be issued in the Merger
will be passed upon by Hunton & Williams, Charlotte, North  Carolina.

         Certain tax consequences of the transaction and certain legal matters
relating to ONSB will be passed upon by Bell, Davis & Pitt, P.A.,
Winston-Salem, North Carolina.





                                       80
<PAGE>   100

         As of the date of this Proxy Statement, certain members of Bell, Davis
& Pitt, P.A. owned an aggregate of approximately 2,561 shares of ONSB Stock.
No other expert or counsel retained by LSB or ONSB had, or is to receive in
connection with the Merger, a substantial interest, direct or indirect, in LSB
or ONSB or is otherwise connected with LSB or ONSB.

                             SHAREHOLDER PROPOSALS

         If the Merger is not consummated for any reason, ONSB expects to hold
its 1998 annual meeting of shareholders in April 1998. In such event, any
proposal of a shareholder that is intended to be presented at the 1998 annual
meeting of shareholders must be received by ONSB at its main office in
Winston-Salem, North Carolina no later than January 9, 1998 in order that any
such proposal be timely received for inclusion in the proxy statement and
appointment of proxy to be issued in connection with such meeting.

         If the Merger is consummated, LSB expects to hold its 1998 annual
meeting of shareholders in April 1998. Any proposal of a shareholder of LSB
that is intended to be presented at the 1998 annual meeting must be received by
LSB at its principal executive office in Lexington, North Carolina not later
than January 13, 1998 in order to be included in LSB's proxy statement and
appointment of proxy to be issued in connection with that meeting.





                                       81
<PAGE>   101


                                                                      APPENDIX A



                                                                 EXECUTION COPY









                 AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


                                  BY AND AMONG


                              LSB BANCSHARES, INC.,


                              LEXINGTON STATE BANK,


                                       AND


                              OLD NORTH STATE BANK



                           DATED AS OF MARCH 14, 1997



                                      A-1
<PAGE>   102



                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                     PAGE
                                                                                                     ----

<S>                        <C>                                                                         <C>
         Preamble.....................................................................................  1

         ARTICLE 1         TRANSACTIONS AND TERMS OF MERGER...........................................  2
                  1.1      Merger.....................................................................  2
                  1.2      Time and Place of Closing..................................................  2
                  1.3      Effective Time.............................................................  2

         ARTICLE 2         TERMS OF MERGER............................................................  3
                  2.1      Business of Surviving Bank.................................................  3
                  2.2      Assumption of Rights.......................................................  3
                  2.3      Assumption of Liabilities..................................................  3
                  2.4      Accounts and Deposits......................................................  3
                  2.5      Articles of Incorporation..................................................  3
                  2.6      Bylaws.....................................................................  4
                  2.7      Directors and Officers.....................................................  4

         ARTICLE 3         MANNER OF CONVERTING SHARES................................................  4
                  3.1      Conversion of Shares.......................................................  4
                  3.2      Anti-Dilution Provisions...................................................  5
                  3.3      Shares Held by ONSB or LSB.................................................  5
                  3.4      Dissenting Shareholders....................................................  5
                  3.5      Fractional Shares..........................................................  6
                  3.6      Conversion of Stock Options and Warrants; Restricted Stock.................  6

         ARTICLE 4         EXCHANGE OF SHARES.........................................................  8
                  4.1      Exchange Procedures........................................................  8
                  4.2      Rights of Former ONSB Shareholders.........................................  8

         ARTICLE 5         REPRESENTATIONS AND WARRANTIES OF ONSB.....................................  9
                  5.1      Organization, Standing and Power...........................................  9
                  5.2      Authority; No Breach By Agreement.......................................... 10
                  5.3      Capital Stock.............................................................. 11
                  5.4      ONSB Subsidiaries.......................................................... 11
                  5.5      Financial Statements; Regulatory Authority Filings......................... 12
                  5.6      Absence of Certain Changes or Events and Undisclosed Liabilities........... 12
                  5.7      Tax Matters................................................................ 13
                  5.8      Assets..................................................................... 14
                  5.9      Environmental Matters...................................................... 14
                  5.10     Compliance with Laws....................................................... 15
</TABLE>


                                      A-2
<PAGE>   103


<TABLE>
<S>                        <C>                                                                         <C>
                  5.11     Labor Relations............................................................ 15
                  5.12     Employee Benefit Plans..................................................... 16
                  5.13     Material Contracts......................................................... 18
                  5.14     Legal Proceedings.......................................................... 19
                  5.15     Reports.................................................................... 19
                  5.16     Statements True and Correct................................................ 19
                  5.17     Accounting, Tax and Regulatory Matters..................................... 20
                  5.18     State Takeover Laws........................................................ 20
                  5.19     Charter Provisions......................................................... 20
                  5.20     Support Agreements......................................................... 20
                  5.21     Derivatives Contracts...................................................... 21
                  5.22     D&O Insurance.............................................................. 21

         ARTICLE 6         REPRESENTATIONS AND WARRANTIES OF LSB...................................... 21
                  6.1      Organization, Standing and Power........................................... 21
                  6.2      Authority; No Breach By Agreement.......................................... 21
                  6.3      Capital Stock.............................................................. 22
                  6.4      SEC Filings; Financial Statements.......................................... 23
                  6.5      Absence of Certain Changes or Events and Undisclosed Liabilities........... 23
                  6.6      Tax Matters................................................................ 24
                  6.7      Compliance with Laws....................................................... 24
                  6.8      Legal Proceedings.......................................................... 25
                  6.9      Reports.................................................................... 25
                  6.10     Statements True and Correct................................................ 26
                  6.11     Accounting, Tax and Regulatory Matters..................................... 26
                  6.12     Authority of LSB Bank...................................................... 26
                  6.13     Environmental Matters...................................................... 27
                  6.14     Labor Relations............................................................ 28
                  6.15     Employee Benefit Plans..................................................... 28

         ARTICLE 7         CONDUCT OF BUSINESS PENDING CONSUMMATION................................... 30
                  7.1      Affirmative Covenants of ONSB.............................................. 30
                  7.2      Negative Covenants of ONSB................................................. 31
                  7.3      Covenants of LSB........................................................... 33
                  7.4      Adverse Changes in Condition............................................... 33
                  7.5      Reports.................................................................... 34
                  7.6      ONSB Right to Recommend Directors; Additional Officers..................... 34
                  7.7      ONSB's Disposition of Federal Reserve Bank Stock........................... 35

         ARTICLE 8         ADDITIONAL AGREEMENTS...................................................... 35
                  8.1      Registration Statement; ONSB Proxy Statement; Shareholder Approval......... 35
                  8.2      Nasdaq/NMS Listing......................................................... 36
                  8.3      Applications............................................................... 36
</TABLE>


                                      A-3
<PAGE>   104



<TABLE>
<S>                        <C>                                                                         <C>
                  8.4      Agreement as to Efforts to Consummate...................................... 36
                  8.5      Investigation and Confidentiality.......................................... 37
                  8.6      Press Releases............................................................. 37
                  8.7      No-Shop Covenant........................................................... 37
                  8.8      Accounting and Tax Treatment............................................... 38
                  8.9      State Takeover Laws........................................................ 38
                  8.10     Charter Provisions......................................................... 38
                  8.11     Agreement of Affiliates.................................................... 38
                  8.12     Employee Benefits and Contracts............................................ 39
                  8.13     Tax Free Reorganization.................................................... 40
                  8.14     D&O Insurance.............................................................. 40

         ARTICLE 9         CONDITIONS PRECEDENT TO OBLIGATIONS
                           TO CONSUMMATE.............................................................. 41
                  9.1      Conditions to Obligations of Each Party.................................... 41
                  9.2      Conditions to Obligations of LSB........................................... 43
                  9.3      Conditions to Obligations of ONSB.......................................... 44

         ARTICLE 10        TERMINATION................................................................ 46
                  10.1     Termination................................................................ 46
                  10.2     Effect of Termination...................................................... 47
                  10.3     Non-Survival of Representations and Covenants.............................. 48

         ARTICLE 11        MISCELLANEOUS.............................................................. 48
                  11.1     Definitions................................................................ 48
                  11.2     Expenses................................................................... 58
                  11.3     Brokers and Finders........................................................ 58
                  11.4     Entire Agreement........................................................... 58
                  11.5     Amendments................................................................. 59
                  11.6     Waivers.................................................................... 59
                  11.7     Assignment................................................................. 59
                  11.8     Notices.................................................................... 60
                  11.9     Governing Law.............................................................. 60
                  11.10    Counterparts............................................................... 61
                  11.11    Captions................................................................... 61
                  11.12    Interpretations............................................................ 61
                  11.13    Enforcement of Agreement................................................... 61
                  11.14    Severability............................................................... 61
</TABLE>



                                      A-4
<PAGE>   105




                                LIST OF EXHIBITS



EXHIBIT NUMBER  DESCRIPTION



         1.     Form of Plan of Merger. (ss. ss. 1.1, 9.1(i)).

         2.     Form of Affiliate Agreement between LSB and affiliates of
                ONSB. (ss. ss. 8.11, 9.2(g)).

         3.     Form of Support Agreement between LSB and ONSB directors
                and executive officers. (ss. ss. 5.20, 9.2(h)).

         4.     Matters as to which Bell, Davis & Pitt, P.A., counsel for ONSB,
                will opine. (ss.9.2(d)).

         5.     Matters as to which Hunton & Williams, counsel for LSB and
                LSB Bank, will opine. (ss. 9.3(d)).




                                      A-5
<PAGE>   106



                 AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


                  THIS AGREEMENT AND PLAN OF REORGANIZATION AND MERGER (this
"Agreement") is made and entered into as of March , 1997, by and among LSB
BANCSHARES, INC. ("LSB"), a North Carolina corporation, having its principal
office located in Lexington, North Carolina; LEXINGTON STATE BANK ("LSB Bank"),
a North Carolina chartered bank and a wholly-owned subsidiary of LSB, having its
principal office located in Lexington, North Carolina; and OLD NORTH STATE BANK
("ONSB"), a North Carolina chartered bank having its principal office located in
Winston-Salem, North Carolina.

                                    PREAMBLE

                  The respective Boards of Directors of ONSB and LSB are of the
opinion that the transactions described herein are in the best interests of the
parties and their respective shareholders. This Agreement provides for the
acquisition of ONSB by LSB pursuant to the merger of ONSB with and into LSB
Bank. At the effective time of such merger, the outstanding shares of the
capital stock of ONSB shall be converted into the right to receive shares of the
common stock of LSB (except as provided herein). As a result, shareholders of
ONSB shall become shareholders of LSB. The transactions described in this
Agreement are subject to the approvals of the shareholders of ONSB and LSB, the
Federal Deposit Insurance Corporation, the North Carolina State Banking
Commission, and the satisfaction of certain other conditions described in this
Agreement. It is the intention of the parties to this Agreement that the merger
(i) for federal income tax purposes shall qualify as a "reorganization" within
the meaning of Section 368(a) of the Internal Revenue Code, and (ii) for
accounting purposes shall qualify for treatment as a "pooling of interests"
consistent with GAAP and the rules and regulations of the SEC.

         As a condition and inducement to LSB's willingness to enter into this
Agreement, certain of ONSB's directors and executive officers will execute and
deliver to LSB, on the date hereof, a Support Agreement (a "Support Agreement"),
in substantially the form of Exhibit 3 to this Agreement.

         As an inducement to LSB's willingness to consummate the transactions
contemplated by this Agreement, ONSB and LSB have entered into a certain Option
Agreement dated as of January 20, 1997 (the "Option Agreement"), pursuant to
which ONSB has granted to LSB an option to purchase shares of common stock of
ONSB in accordance with the terms of such Option Agreement.

                  Certain terms used in this Agreement are defined in Section
11.1 hereof.

                  NOW, THEREFORE, in consideration of the premises and the
mutual warranties, representations, covenants and agreements set forth herein,
and other good and


                                      A-6
<PAGE>   107


valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties, intending to be legally bound, agree as follows:


                                    ARTICLE 1
                        TRANSACTIONS AND TERMS OF MERGER

                  1.1 MERGER. Subject to the terms and conditions of this
Agreement and the Plan of Merger, at the Effective Time, ONSB shall be merged
with and into LSB Bank, pursuant to Section 53-12 of Chapter 53 of the General
Statutes of North Carolina and in accordance with the provisions of Sections
53-13 and 53-17 of Chapter 53 and Section 55-11- 06 of Chapter 55 of the General
Statutes of North Carolina. LSB Bank shall be the Surviving Bank resulting from
the Merger and shall continue to be operated as a wholly-owned, first tier
Subsidiary of LSB and shall continue to be governed by the Laws of the State of
North Carolina as a state chartered bank, operating under the name "LSB". The
Merger shall be consummated pursuant to the terms of this Agreement, which has
been approved and adopted by the respective Boards of Directors of ONSB and LSB,
and the terms of the Plan of Merger to be entered into by LSB Bank and ONSB.

                  1.2 TIME AND PLACE OF CLOSING. The closing (the "Closing")
will take place at 9:00 A.M. (Eastern Standard Time) on the date that the
Effective Time occurs (or the immediately preceding day if the Effective Time is
earlier than 9:00 A.M.), or at such other time as the Parties, acting through
their chief executive officers or chairmen of the board of directors, may
mutually agree. The place of Closing shall be at the offices of Hunton &
Williams in Charlotte, North Carolina, or such other location as LSB shall
designate.

                  1.3 EFFECTIVE TIME. The Merger and other transactions
contemplated by this Agreement shall become effective on the date and at the
time the Articles of Merger reflecting the Merger shall become effective with
the Secretary of State of the State of North Carolina (the "Effective Time").
Subject to the terms and conditions hereof, unless otherwise mutually agreed
upon in writing by the chief executive officers or chairmen of the board of
directors of each Party, the Parties shall use their commercially reasonable
best efforts to cause the Effective Time to occur as soon as practicable
following the last to occur of (i) the effective date (including expiration of
any applicable waiting period) of the last required Consent of any Regulatory
Authority having authority over and approving or exempting the Merger, and (ii)
the date on which the shareholders of ONSB and LSB approve this Agreement and
the Plan of Merger to the extent such approval is required by applicable Law.




                                      A-7
<PAGE>   108


                                    ARTICLE 2
                                 TERMS OF MERGER

                  2.1 BUSINESS OF SURVIVING BANK. The business of the Surviving
Bank from and after the Effective Time shall continue to be that of a state
chartered bank organized under the laws of the State of North Carolina, and
shall be conducted at the main office of the Surviving Bank, which shall be
located at One LSB Plaza, Lexington, North Carolina 27292, and at its legally
established branches, offices, agencies, and facilities, whether in operation or
approved but unopened, at the Effective Time, including all such branches,
offices, agencies, and facilities of ONSB.

                  2.2 ASSUMPTION OF RIGHTS. As of the Effective Time, all
assets, rights, franchises, and interests of ONSB in every type of property
(real, personal and mixed) and choses in action shall be transferred to and
vested in the Surviving Bank by virtue of the Merger without any deed or other
transfer. The Surviving Bank, upon the Merger and without any order or other
action on the part of any court or otherwise, shall hold and enjoy all rights of
property, franchises, and interests, including appointments, designations, and
nominations, and all other rights and interests as trustee, executor,
administrator, registrar of stocks and bonds, guardian of estates, assignee, and
receiver, and in every other fiduciary capacity, in the same manner and to the
same extent as such rights, franchises, and interests were held or enjoyed by
ONSB at the Effective Time.

                  2.3 ASSUMPTION OF LIABILITIES. As of the Effective Time, the
Surviving Bank shall be liable for all liabilities of every kind and description
of ONSB and all deposits, debts, liabilities, obligations and contracts of ONSB,
whether matured or unmatured, accrued, absolute, contingent, or otherwise, shall
be those of the Surviving Bank, none of which shall be released or impaired by
the Merger, including liabilities arising out of the operation of a trust
department; all rights of creditors and other obligees and all liens on property
of ONSB shall be preserved unimpaired; and all actions and legal proceedings to
which ONSB was a party prior to the Merger shall be unaffected by the
consummation thereof and shall proceed as if the Merger had not taken place.

                  2.4 ACCOUNTS AND DEPOSITS. As of the Effective Time, all
accounts and deposits of ONSB shall be and continue to be accounts and deposits
of the Surviving Bank, without change in their respective terms, maturity,
minimum required balances or withdrawal value. As of the Effective Time, each
account or deposit of ONSB shall be considered for dividend or interest purposes
as an account or deposit of the Surviving Bank from the time said account or
deposit was opened in ONSB and at all times thereafter until such account or
deposit ceases to be an account or deposit of the Surviving Bank.

                  2.5 ARTICLES OF INCORPORATION. The Articles of Incorporation
of LSB Bank in effect immediately prior to the Effective Time shall be the
Articles of Incorporation of the Surviving Bank, until otherwise amended or
repealed in accordance with applicable law.


                                      A-8
<PAGE>   109


                  2.6 BYLAWS. The Bylaws of LSB Bank in effect immediately prior
to the Effective Time shall be the Bylaws of the Surviving Bank, until otherwise
amended or repealed in accordance with applicable law.

                  2.7 DIRECTORS AND OFFICERS. The directors of LSB Bank in
office immediately prior to the Effective Time, together with such additional
persons as elected in accordance with Section 7.6 hereof, shall serve as the
directors of the Surviving Bank from and after the Effective Time in accordance
with the Bylaws of the Surviving Bank. The officers of LSB Bank in office
immediately prior to the Effective Time, together with such additional persons
as appointed in accordance with Section 7.6 hereof, shall serve as the officers
of the Surviving Bank from and after the Effective Time in accordance with the
Bylaws of the Surviving Bank.


                                    ARTICLE 3
                           MANNER OF CONVERTING SHARES

                  3.1 CONVERSION OF SHARES. Subject to the provisions of this 
Article 3, at the Effective Time, by virtue of the Merger and without any
action the part of LSB, LSB Bank, ONSB, or the shareholders of the foregoing,
the shares of the constituent corporations shall be converted as follows:

                  (a) Each share of LSB Common Stock issued and outstanding
         immediately prior to the Effective Time shall remain issued and
         outstanding from and after the Effective Time.

                  (b) Each share of LSB Bank Common Stock issued and outstanding
         immediately prior to the Effective Time shall remain issued and
         outstanding from and after the Effective Time.

                  (c) Each share of ONSB Common Stock (excluding shares held by
         (i) any ONSB Company or any LSB Company (in each case other than in a
         fiduciary capacity or as a result of debts previously contracted) which
         shares shall be canceled as provided in Section 3.3 hereof, and (ii)
         shareholders who perfect their statutory appraisal rights as provided
         in Section 3.4 hereof) issued and outstanding at the Effective Time
         shall cease to be outstanding and shall be converted into and exchanged
         for the right to receive 0.948 of a share of LSB Common Stock, subject
         to adjustment at Closing pursuant to subparagraphs a. and b. of this
         Section 3.1(c) (as adjusted, the "Exchange Ratio"):

                           a. If the Average LSB Closing Price is above $20.00
                  per share (subject to each Party's right to terminate this
                  Agreement set forth in Section 10.1(i) hereof), the "Exchange
                  Ratio" shall be adjusted and calculated in


                                      A-9
<PAGE>   110


                  accordance with the following equation (rounded to the nearest
                  one-thousandth):

                           ER = [[(ALCP*$250,000)+$25,000,000]/IOS]/ALCP

                   Where:

                     ER    =  Exchange Ratio.
                     ALCP  =  Average LSB Closing Price.
                     IOS   =  1,582,678 shares of ONSB Common Stock, less any
                              shares canceled as provided in Section 3.3 hereof.

                  For example, assuming that (i) the Average LSB Closing Price
                  is determined to be $23.00, and (ii) none of such shares are
                  canceled as provided in Section 3.3 hereof; then, the adjusted
                  Exchange Ratio would be 0.845.

                           b. If the Average LSB Closing Price is below $20.00
                  per share (subject to each Party's right to terminate this
                  Agreement set forth in Section 10.1(i) hereof), the "Exchange
                  Ratio" shall be adjusted and calculated (using the same
                  abbreviated terms as in subparagraph a. above) in accordance
                  with the following equation (rounded to the nearest one
                  one-thousandth):

                           ER = [[(ALCP*$1,000,000)+$10,000,000]/IOS]/ALCP

                  For example, assuming that (i) the Average LSB Closing Price
                  is determined to be $16.00, and (ii) none of such shares are
                  canceled as provided in Section 3.3 hereof; then, the adjusted
                  Exchange Ratio would be 1.027.

                  3.2 ANTI-DILUTION PROVISIONS. In the event LSB or ONSB (in
breach of Section 7.2 hereof) changes the number of shares of LSB Common Stock
or ONSB Common Stock, respectively, issued and outstanding prior to the
Effective Time as a result of a stock split, stock dividend, or similar
recapitalization with respect to such stock and the record date therefor (in the
case of a stock dividend) or the effective date thereof (in the case of a stock
split or similar recapitalization for which a record date is not established)
shall be prior to the Effective Time, the Exchange Ratio shall be
proportionately adjusted.

                  3.3 SHARES HELD BY ONSB OR LSB. Each of the shares of ONSB
Common Stock held by any ONSB Company or by any LSB Company, in each case other
than in a fiduciary capacity or as a result of debts previously contracted,
shall be canceled and retired at the Effective Time, and no consideration shall
be issued in exchange therefor.

                  3.4 DISSENTING SHAREHOLDERS. Any holder of shares of ONSB
Common Stock who perfects such holder's dissenters' rights of appraisal in
accordance with and as


                                      A-10
<PAGE>   111



contemplated by Article 13 of the NCBCA shall be entitled to receive the value
of such shares in cash as determined pursuant to such provision of Law;
provided, however, that no such payment shall be made to any dissenting
shareholder unless and until such dissenting shareholder has complied with the
applicable provisions of the NCBCA and surrendered to the Surviving Bank the
certificate or certificates representing the shares for which payment is being
made. In the event that after the Effective Time a dissenting shareholder of
ONSB fails to perfect, or effectively withdraws or loses, such holder's right to
appraisal and of payment for such holder's shares, LSB shall issue and deliver
the consideration to which such holder of shares of ONSB Common Stock is
entitled under this Article 3 (without interest) upon surrender by such holder
of the certificate or certificates representing shares of ONSB Common Stock held
by such holder. ONSB will establish an escrow account with an amount sufficient
to satisfy the maximum aggregate payment that may be required to be paid to
dissenting shareholders. Upon satisfaction of all claims of dissenting
shareholders, the remaining escrowed amount, reduced by payment of the fees and
expenses of the escrow agent, will be returned to the Surviving Bank.

                  3.5 FRACTIONAL SHARES. Notwithstanding any other provision of
this Agreement, each holder of shares of ONSB Common Stock exchanged pursuant to
the Merger who would otherwise have been entitled to receive a fraction of a
share of LSB Common Stock (after taking into account all certificates delivered
by such holder) shall receive, in lieu thereof, cash (without interest) in an
amount equal to such fractional part of a share of LSB Common Stock multiplied
by the Average LSB Closing Price. No such holder will be entitled to dividends,
voting rights, or any other rights as a shareholder in respect of any fractional
shares.

                  3.6 CONVERSION OF STOCK OPTIONS AND WARRANTS; RESTRICTED
STOCK.

                  (a) At the Effective Time, each option, warrant or other right
         to purchase shares of ONSB Common Stock pursuant to stock options,
         warrants or stock appreciation rights ("ONSB Options") granted by ONSB
         under the ONSB Stock Plans or the ONSB Warrants, which are outstanding
         at the Effective Time, whether or not exercisable, shall be converted
         into and become rights with respect to LSB Common Stock, and LSB shall
         assume each ONSB Option, in accordance with the terms of the ONSB Stock
         Plan and stock option agreement or the ONSB Warrant, as the case may
         be, by which it is evidenced, except that from and after the Effective
         Time, (i) LSB and its Compensation Committee shall be substituted for
         ONSB and the Committee of ONSB's Board of Directors (including, if
         applicable, the entire Board of Directors of ONSB) administering such
         ONSB Stock Plan and ONSB Warrants, (ii) each ONSB Option assumed by LSB
         may be exercised solely for shares of LSB Common Stock (or cash in the
         case of stock appreciation rights), (iii) the number of shares of LSB
         Common Stock subject to such ONSB Option shall be equal to the number
         of shares of ONSB Common Stock subject to such ONSB Option immediately
         prior to the Effective Time multiplied by the Exchange Ratio, and (iv)
         the per share exercise price


                                      A-11
<PAGE>   112



         under each such ONSB Option shall be adjusted by dividing the per share
         exercise price under each such ONSB Option by the Exchange Ratio and
         rounding up to the nearest cent. Notwithstanding the provisions of
         clause (iii) of the preceding sentence, LSB shall not be obligated to
         issue any fraction of a share of LSB Common Stock upon exercise of ONSB
         Options and any fraction of a share of LSB Common Stock that otherwise
         would be subject to a converted ONSB Option shall represent the right
         to receive a cash payment upon exercise of such converted ONSB Option
         equal to the product of such fraction and the difference between the
         market value of one share of LSB Common Stock at the time of exercise
         of such Option and the per share exercise price of such ONSB Option.
         The market value of one share of LSB Common Stock at the time of
         exercise of an ONSB Option shall be the last sale price of such common
         stock on the Nasdaq/NMS (as reported by The Wall Street Journal or, if
         not reported thereby, any other authoritative source selected by LSB)
         on the last trading day preceding the date of exercise. In addition,
         notwithstanding the clauses (iii) and (iv) of the first sentence of
         this Section 3.6(a), each ONSB Option which is an "incentive stock
         option" shall be adjusted as required by Section 424 of the Internal
         Revenue Code, so as not to constitute a modification, extension or
         renewal of the option, within the meaning of Section 424(h) of the
         Internal Revenue Code. ONSB agrees to take all necessary steps to
         effectuate the foregoing provisions of this Section 3.6(a).

                  (b) As soon as practicable after the Effective Time, LSB shall
         deliver to the participants in each ONSB Stock Plan and the holders of
         the ONSB Warrants, as the case may be, an appropriate notice setting
         forth such participant's or holder's, as the case may be, rights
         pursuant thereto, and the grants pursuant to such ONSB Stock Plan and
         ONSB Warrants shall continue in effect on the same terms and conditions
         (subject to the adjustments required by Section 3.6(a) after giving
         effect to the Merger), and LSB shall comply with the terms of each ONSB
         Stock Plan to ensure, to the extent required by, and subject to the
         provisions of, such ONSB Stock Plan, that ONSB Options which qualified
         as incentive stock options prior to the Effective Time continue to
         qualify as incentive stock options after the Effective Time. At or
         prior to the Effective Time, LSB shall take all corporate action
         necessary to reserve for issuance sufficient shares of LSB Common Stock
         for delivery upon exercise ONSB Options assumed by it in accordance
         with this Section 3.6.

                  (c) All restrictions or limitations on transfer with respect
         to ONSB Common Stock awarded under the ONSB Stock Plans, the ONSB
         Warrants, or any other plan, program, or arrangement of any ONSB
         Company, to the extent that such restrictions or limitations shall not
         have already lapsed, and except as otherwise expressly provided in such
         plan, program, or arrangement, shall remain in full force and effect
         with respect to shares of LSB Common Stock into which such restricted
         stock is converted pursuant to Section 3.1 hereof.



                                      A-12
<PAGE>   113


                  (d) Notwithstanding the foregoing provisions of this Section
         3.6, in no event shall options and warrants issued by ONSB to purchase
         more than 151,636 shares of ONSB Common Stock be converted into or
         become rights with respect to LSB Common Stock in connection with the
         transactions contemplated by this Agreement.



                                    ARTICLE 4
                               EXCHANGE OF SHARES

                  4.1 EXCHANGE PROCEDURES. Promptly after the Effective Time,
LSB shall cause the exchange agent selected by LSB (the "Exchange Agent") to
mail to the former shareholders of ONSB appropriate transmittal materials (which
shall specify that delivery shall be effected, and risk of loss and title to the
certificates theretofore representing shares of ONSB Common Stock shall pass,
only upon proper delivery of such certificates to the Exchange Agent. After the
Effective Time, each holder of shares of ONSB Common Stock (other than shares to
be canceled pursuant to Section 3.3 hereof or as to which statutory dissenters'
rights have been perfected as provided in Section 3.4 hereof) issued and
outstanding at the Effective Time shall surrender the certificate or
certificates representing such shares (or, if applicable, a lost certificate
affidavit (including indemnification) in form and substance reasonably
acceptable to LSB and the Exchange Agent) to the Exchange Agent and shall
promptly upon surrender thereof receive in exchange therefor the consideration
provided in Section 3.1 hereof, together with all undelivered dividends or
distributions in respect of such shares (without interest thereon) pursuant to
Section 4.2 hereof. To the extent required by Section 3.5 hereof, each holder of
shares of ONSB Common Stock issued and outstanding at the Effective Time also
shall receive, upon surrender of the certificate or certificates representing
such shares (or a lost certificate affidavit referenced above), cash in lieu of
any fractional share of LSB Common Stock to which such holder may be otherwise
entitled (without interest). LSB shall not be obligated to deliver the
consideration to which any former holder of ONSB Common Stock is entitled as a
result of the Merger until such holder surrenders such holder's certificate or
certificates representing the shares of ONSB Common Stock (or a lost certificate
affidavit referenced above) for exchange as provided in this Section 4.1. The
certificate or certificates of ONSB Common Stock so surrendered shall be duly
endorsed, or accompanied with executed blank stock powers with signatures
guaranteed, as the Exchange Agent may require. Any other provision of this
Agreement notwithstanding, neither LSB, the Surviving Bank nor the Exchange
Agent shall be liable to a holder of ONSB Common Stock for any amounts paid or
property delivered in good faith to a public official pursuant to any applicable
abandoned property Law.

                  4.2 RIGHTS OF FORMER ONSB SHAREHOLDERS. At the Effective Time,
the stock transfer books of ONSB shall be closed as to holders of ONSB Common
Stock immediately prior to the Effective Time, and no subsequent transfer of
ONSB Common


                                      A-13
<PAGE>   114



Stock by any such holder shall thereafter be made or recognized. Until
surrendered for exchange in accordance with the provisions of Section 4.1
hereof, each certificate theretofore representing shares of ONSB Common Stock
(other than shares to be canceled pursuant to Section 3.3 hereof or as to which
the holder thereof has perfected dissenters' rights of appraisal as contemplated
in Section 3.4 hereof) shall from and after the Effective Time represent for all
purposes only the right to receive the consideration provided in Sections 3.1
and 3.5 hereof; subject, however, to the Surviving Bank's obligation to pay any
dividends or make any other distributions with a record date prior to the
Effective Time which have been declared or made by ONSB in respect of such
shares of ONSB Common Stock in accordance with the terms of this Agreement and
which remain unpaid at the Effective Time. To the extent permitted by Law,
former shareholders of record of ONSB shall be entitled to vote after the
Effective Time at any meeting of LSB shareholders the number of whole shares of
LSB Common Stock into which their respective shares of ONSB Common Stock are
converted, regardless of whether such holders have exchanged their certificates
representing ONSB Common Stock for certificates representing LSB Common Stock in
accordance with the provisions of this Agreement. Whenever a dividend or other
distribution is declared by LSB on the LSB Common Stock, the record date for
which is at or after the Effective Time, the declaration shall include dividends
or other distributions on all shares of LSB Common Stock issuable pursuant to
this Agreement, but no dividend or other distribution payable to the holders of
record of LSB Common Stock as of any time subsequent to the Effective Time shall
be delivered to the holder of any certificate representing shares of ONSB Common
Stock issued and outstanding at the Effective Time until such holder surrenders
such certificate for exchange as provided in Section 4.1 hereof. However, upon
surrender of such ONSB Common Stock certificate, both the LSB Common Stock
certificate (together with all such undelivered dividends or other distributions
without interest) and any undelivered cash payments to be paid for fractional
share interests (without interest) shall be delivered and paid with respect to
each share represented by such certificate.


                                    ARTICLE 5
                     REPRESENTATIONS AND WARRANTIES OF ONSB

                  ONSB hereby represents and warrants to LSB and LSB Bank as
follows:

                  5.1 ORGANIZATION, STANDING AND POWER. ONSB is a state
chartered bank duly organized, validly existing, and in good standing under the
Laws of the State of North Carolina, and has the corporate power and authority
to carry on its business as now conducted and to own, lease and operate its
Assets. ONSB is duly qualified or licensed to transact business as a foreign
corporation in good standing in the States of the United States and foreign
jurisdictions where the character of its Assets or the nature or conduct of its
business requires it to be so qualified or licensed, except for such
jurisdictions in which the failure to be so qualified or licensed is not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on ONSB.


                                      A-14
<PAGE>   115



                  5.2 AUTHORITY; NO BREACH BY AGREEMENT.

                  (a) ONSB has the corporate power and authority necessary to
         execute, deliver, and perform its obligations under this Agreement, the
         Option Agreement, the Confidentiality Agreement and the Plan of Merger
         and to consummate the transactions contemplated hereby and thereby,
         subject to the approval of this Agreement and the Plan of Merger by the
         holders of two-thirds of the outstanding shares of ONSB Common Stock.
         The execution, delivery, and performance of this Agreement, the Option
         Agreement, the Confidentiality Agreement and the Plan of Merger and the
         consummation of the transactions contemplated herein and therein,
         including the Merger, have been duly and validly authorized by all
         necessary corporate action in respect thereof on the part of ONSB,
         subject to the approval of this Agreement and the Plan of Merger by the
         holders of two-thirds of the outstanding shares of ONSB Common Stock.
         Subject to such requisite shareholder approval, this Agreement, the
         Option Agreement and the Confidentiality Agreement represent, and, when
         executed and delivered, the Plan of Merger will represent, legal,
         valid, and binding obligations of ONSB, enforceable against ONSB in
         accordance with their respective terms (except in all cases as such
         enforceability may be limited by applicable bankruptcy, insolvency,
         reorganization, moratorium, or similar Laws affecting the enforcement
         of creditors' rights generally and except that the availability of the
         equitable remedy of specific performance or injunctive relief is
         subject to the discretion of the court before which any such proceeding
         may be brought).

                  (b) Neither the execution and delivery of this Agreement, the
         Option Agreement, the Confidentiality Agreement and the Plan of Merger
         by ONSB, nor the consummation by ONSB of the transactions contemplated
         hereby and thereby, nor compliance by ONSB with any of the provisions
         hereof and thereof, will (i) conflict with or result in a breach of any
         provision of ONSB's Articles of Incorporation or Bylaws, or (ii) except
         as disclosed in Section 5.2(b) of the ONSB Disclosure Memorandum,
         constitute or result in a Default under, or require any Consent
         pursuant to, or result in the creation of any Lien on any Asset of any
         ONSB Company under, any Contract or Permit of any ONSB Company, or,
         (iii) except as disclosed in Section 5.2(b) of the ONSB Disclosure
         Memorandum, violate any Law or Order applicable to any ONSB Company or
         any of their respective Assets.

                  (c) Except as disclosed in Section 5.2(c) of the ONSB
         Disclosure Memorandum, no notice to, filing with, or Consent of, any
         public body or authority is necessary for the consummation by ONSB of
         the Merger and the other transactions contemplated in this Agreement,
         the Option Agreement, the Confidentiality Agreement and the Plan of
         Merger.



                                      A-15
<PAGE>   116



                  5.3 CAPITAL STOCK.

                  (a) The authorized capital stock of ONSB consists of 2,000,000
         shares of ONSB Common Stock, of which 1,582,678 shares are issued and
         outstanding as of the date of this Agreement and not more than
         1,734,314 shares will be issued and outstanding at the Effective Time.
         All of the issued and outstanding shares of ONSB Common Stock are duly
         and validly issued and outstanding and are fully paid and
         nonassessable. None of the outstanding shares of ONSB Common Stock has
         been issued in violation of any preemptive rights of the current or
         past shareholders of ONSB. ONSB has reserved 111,294 shares of ONSB
         Common Stock for issuance under the ONSB Stock Plans, pursuant to which
         options to purchase not more than 111,294 shares of ONSB Common Stock
         are outstanding. ONSB has reserved 40,342 shares of ONSB Common Stock
         for issuance under the ONSB Warrants, pursuant to which warrants to
         purchase not more than 40,342 shares of ONSB Common Stock are
         outstanding.

                  (b) Except as set forth in Section 5.3(a) hereof, or as
         provided in the Option Agreement, there are no shares of capital stock
         or other equity securities of ONSB outstanding and no outstanding
         Rights relating to the capital stock of ONSB.

                  5.4 ONSB SUBSIDIARIES. ONSB has disclosed in Section 5.4 of
the ONSB Disclosure Memorandum all of the ONSB Subsidiaries as of the date of
this Agreement. Except as disclosed in Section 5.4 of the ONSB Disclosure
Memorandum, ONSB or one of its Subsidiaries owns all of the issued and
outstanding shares of capital stock of each ONSB Subsidiary. No equity
securities of any ONSB Subsidiary are or may become required to be issued (other
than to another ONSB Company) by reason of any Rights relating to the capital
stock of such ONSB Subsidiary, and there are no Contracts by which any ONSB
Subsidiary is bound to issue (other than to another ONSB Company) additional
shares of its capital stock or Rights relating thereto or by which any ONSB
Company is or may be bound to transfer any shares of the capital stock of any
ONSB Subsidiary (other than to another ONSB Company). There are no Contracts
relating to the rights of any ONSB Company to vote or to dispose of any shares
of the capital stock of any ONSB Subsidiary. All of the issued and outstanding
shares of capital stock of each ONSB Subsidiary are duly authorized, validly
issued and fully paid and nonassessable under the applicable corporation Law of
the jurisdiction in which such Subsidiary is incorporated or organized and are
owned by a ONSB Company free and clear of any Lien. Each ONSB Subsidiary is a
corporation, and is duly organized, validly existing, and in good standing under
the Laws of the jurisdiction in which it is incorporated or organized, and has
the corporate power and authority necessary for it to own, lease, and operate
its Assets and to carry on its business as now conducted. Each ONSB Subsidiary
is duly qualified or licensed to transact business as a foreign corporation in
good standing in the States of the United States and foreign jurisdictions where
the character of its Assets or the nature or conduct of its business requires it
to be so qualified or licensed, except for such jurisdictions in which the
failure to be so qualified or licensed is not


                                      A-16
<PAGE>   117


reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on ONSB.

                  5.5 FINANCIAL STATEMENTS; REGULATORY AUTHORITY FILINGS.

                  (a) ONSB has disclosed in Section 5.5 of the ONSB Disclosure
         Memorandum, and has delivered to LSB copies of, all ONSB Financial
         Statements prepared for periods ended prior to the date hereof and will
         deliver to LSB copies of all ONSB Financial Statements prepared
         subsequent to the date hereof. The ONSB Financial Statements (as of the
         dates thereof and for the periods covered thereby): (i) are, or, if
         dated after the date of this Agreement, will be, in accordance with the
         books and records of the ONSB Companies, which are or will be, as the
         case may be, complete and correct and which have been or will have
         been, as the case may be, maintained in accordance with good business
         practices; and (ii) present or will present, as the case may be, fairly
         the consolidated financial position of the ONSB Companies as of the
         dates indicated and the consolidated results of operations, changes in
         shareholders' equity, and cash flows of the ONSB Companies for the
         periods indicated, in accordance with GAAP (subject to any exceptions
         as to consistency specified therein or as may be indicated in the notes
         thereto or, in the case of interim financial statements, to normal
         recurring year-end adjustments that are not material).

                  (b) ONSB has filed, and made copies available to LSB of, all
         forms, reports, and documents required to be filed by ONSB with the FRB
         or the FDIC since December 31, 1993 (collectively, the "ONSB FRB/FDIC
         Reports"). The ONSB FRB/FDIC Reports (i) at the time filed, complied in
         all material respects with the applicable requirements of the Laws that
         the FRB and the FDIC, as the case may be, are charged to administer and
         enforce, and (ii) did not at the time they were filed (or if amended or
         superseded by a filing prior to the date of this Agreement, then on the
         date of such filing) contain any untrue statement of a material fact or
         omit to state a material fact required to be stated in such ONSB
         FRB/FDIC Reports or necessary in order to make the statements in such
         ONSB FRB/FDIC Reports, in light of the circumstances under which they
         were made, not misleading. Except for ONSB Subsidiaries that are
         registered as a broker, dealer or investment advisor, neither ONSB nor
         any ONSB Subsidiary is required to file any forms, reports, or other
         documents with the SEC or NASD.

                  5.6 ABSENCE OF CERTAIN CHANGES OR EVENTS AND UNDISCLOSED
 LIABILITIES.

                  (a) Since September 30, 1996, (i) there have been no events,
         changes, or occurrences which have had, or are reasonably likely to
         have, individually or in the aggregate, a Material Adverse Effect on
         ONSB, and (ii) the ONSB Companies have not taken any action, or failed
         to take any action, prior to the date of this Agreement,


                                      A-17
<PAGE>   118



         which action or failure, if taken after the date of this Agreement,
         would represent or result in a material breach or violation of any of
         the covenants and agreements of ONSB provided in Article 7 hereof.

                  (b) No ONSB Company has any Liabilities that are reasonably
         likely to have, individually or in the aggregate, a Material Adverse
         Effect on ONSB, except Liabilities which are accrued or reserved
         against in the consolidated balance sheets of ONSB as of September 30,
         1996 included in the ONSB Financial Statements or reflected in the
         notes thereto. No ONSB Company has incurred or paid any Liability since
         September 30, 1996, except for such Liabilities incurred or paid in the
         ordinary course of business consistent with past business practice and
         which are not reasonably likely to have, individually or in the
         aggregate, a Material Adverse Effect on ONSB.

                  5.7 TAX MATTERS.

                  (a) All Tax Returns required to be filed by or on behalf of
         any of the ONSB Companies have been timely filed, or requests for
         extensions have been timely filed, granted, and have not expired for
         periods ended on or before December 31, 1995, and on or before the date
         of the most recent fiscal year end immediately preceding the Effective
         Time, and all Tax Returns filed are complete and accurate to the
         Knowledge of ONSB. All Taxes shown on filed Tax Returns have been paid.
         Except as disclosed in Section 5.7(a) of the ONSB Disclosure
         Memorandum, there is no audit examination, deficiency, or refund
         Litigation with respect to any Taxes. All Taxes and other Liabilities
         due with respect to completed and settled examinations or concluded
         Litigation have been paid.

                  (b) None of the ONSB Companies has executed an extension or
         waiver of any statute of limitations on the assessment or collection of
         any Tax due that is currently in effect.

                  (c) Adequate provision for any Taxes due or to become due for
         any of the ONSB Companies for the period or periods through and
         including the date of the respective ONSB Financial Statements has been
         made and is reflected on such ONSB Financial Statements.

                  (d) Deferred Taxes of the ONSB Companies have been provided
         for in the ONSB Financial Statements in accordance with GAAP.

                  (e) Each of the ONSB Companies is in compliance with, and its
         records contain all information and documents (including properly
         completed IRS Forms W-9) necessary to comply with, all applicable
         information reporting and Tax withholding requirements under federal,
         state, and local Tax Laws, and such records identify with specificity
         all accounts subject to backup withholding under Section 3406 of the


                                      A-18
<PAGE>   119


         Internal Revenue Code, except for such instances of noncompliance and
         such omissions as are not reasonably likely to have, individually or in
         the aggregate, a Material Adverse Effect on ONSB.

                  5.8 ASSETS. Except as disclosed or reserved against in the
ONSB Financial Statements, the ONSB Companies have good and marketable title,
free and clear of all Liens, to all of their respective Assets. All tangible
properties used in the businesses of the ONSB Companies are in good condition,
reasonable wear and tear excepted, and are usable in the ordinary course of
business consistent with ONSB's past practices. All Assets which are material to
the business of the ONSB Companies, held under leases or subleases by any of the
ONSB Companies, are held under valid Contracts enforceable in accordance with
their respective terms (except as enforceability may be limited by applicable
bankruptcy, insolvency, reorganization, moratorium, or other Laws affecting the
enforcement of creditors' rights generally and except that the availability of
the equitable remedy of specific performance or injunctive relief is subject to
the discretion of the court before which any proceedings may be brought), and
each such Contract is in full force and effect. The ONSB Companies currently
maintain insurance similar in amounts, scope, and coverage to that maintained by
other peer banking organizations. None of the ONSB Companies has received notice
from any insurance carrier that (i) such insurance will be canceled or that
coverage thereunder will be reduced or eliminated, or (ii) premium costs with
respect to such policies of insurance will be substantially increased. The
Assets of the ONSB Companies include all assets required to operate the business
of the ONSB Companies as presently conducted.

                  5.9 ENVIRONMENTAL MATTERS.

                  (a) To the Knowledge of ONSB, each ONSB Company, its
         Participation Facilities, and its Loan Properties are, and have been,
         in compliance with all Environmental Laws, except for violations which
         are not reasonably likely to have, individually or in the aggregate, a
         Material Adverse Effect on ONSB.

                  (b) There is no Litigation pending or, to the Knowledge of
         ONSB, threatened before any court, governmental agency, or board or
         other forum in which any ONSB Company or any of its Loan Properties or
         Participation Facilities has been or, with respect to threatened
         Litigation, may be named as a defendant or potentially responsible
         party (i) for alleged noncompliance (including by any predecessor) with
         any Environmental Law or (ii) relating to the release into the
         environment of any Hazardous Material, whether or not occurring at, on,
         under, or involving a site owned, leased, or operated by any ONSB
         Company or any of its Loan Properties or Participation Facilities.

                  (c) To the Knowledge of ONSB, there is no reasonable basis for
         any Litigation of a type described in subsection (b) above, except such
         as is not


                                      A-19
<PAGE>   120


         reasonably likely to have, individually or in the aggregate, a Material
         Adverse Effect on ONSB.

                  (d) To the Knowledge of ONSB, there have been no releases of
         Hazardous Materials in, on, under, or affecting any ONSB Company's
         current properties, or any Participation Facility or Loan Property of
         an ONSB Company, except such as are not reasonably likely to have,
         individually or in the aggregate, a Material Adverse Effect on ONSB.

                  5.10 COMPLIANCE WITH LAWS. ONSB is an "insured institution" as
defined in the Federal Deposit Insurance Act and applicable regulations
thereunder, and the deposits of ONSB are insured by the Bank Insurance Fund.
Each ONSB Company has in effect all Permits necessary for it to own, lease, or
operate its Assets and to carry on its business as now conducted, except for
those Permits the absence of which are not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on ONSB, and there
has occurred no Default under any such Permit, other than Defaults which are not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on ONSB. Except as disclosed in Section 5.10 of the ONSB Disclosure
Memorandum, no ONSB Company:

                  (a) Is in violation of any Laws, Orders, or Permits applicable
         to its business or employees conducting its business, except for
         violations which are not reasonably likely to have, individually or in
         the aggregate, a Material Adverse Effect on ONSB; and

                  (b) Has received any notification or communication from any
         agency or department of federal, state, or local government or any
         Regulatory Authority or the staff thereof (i) asserting that any ONSB
         Company is not in compliance with any of the Laws or Orders which such
         governmental authority or Regulatory Authority enforces, where such
         noncompliance is reasonably likely to have, individually or in the
         aggregate, a Material Adverse Effect on ONSB, (ii) threatening to
         revoke any Permits, the revocation of which is reasonably likely to
         have, individually or in the aggregate, a Material Adverse Effect on
         ONSB, or (iii) requiring any ONSB Company (A) to enter into or consent
         to the issuance of a cease and desist order, formal agreement,
         directive, commitment, or memorandum of understanding, or (B) to adopt
         any Board resolution or similar undertaking which restricts materially
         the conduct of its business, or in any manner relates to its capital
         adequacy, its credit or reserve policies, its management, or the
         payment of dividends.

                  5.11 LABOR RELATIONS. No ONSB Company is the subject of any
Litigation asserting that it or any other ONSB Company has committed an unfair
labor practice (within the meaning of the National Labor Relations Act or
comparable state law) or seeking to compel it or any other ONSB Company to
bargain with any labor organization as to wages or conditions of employment, nor
is any ONSB Company a party to or bound by any collective


                                      A-20
<PAGE>   121


bargaining agreement, contract, or other agreement or understanding with a labor
union or labor organization, nor is there any strike or other labor dispute
involving any ONSB Company, pending or threatened, or to the Knowledge of ONSB
is there any activity involving any ONSB Company's employees seeking to certify
a collective bargaining unit or engaging in any other organization activity.

                  5.12 EMPLOYEE BENEFIT PLANS.

                  (a) ONSB has disclosed in Section 5.12 of the ONSB Disclosure
         Memorandum, and has delivered or made available to LSB prior to the
         execution of this Agreement correct and complete copies, in each case,
         of all pension, retirement, profit-sharing, deferred compensation,
         stock option, employee stock ownership, severance pay, vacation, bonus,
         or other incentive plan, all other written employee programs,
         arrangements, or agreements, all medical, vision, dental, or other
         health plans, all life insurance plans, and all other employee benefit
         plans or fringe benefit plans, including, without limitation, "employee
         benefit plans" as that term is defined in Section 3(3) of ERISA,
         currently or previously adopted, maintained by, sponsored in whole or
         in part by, or contributed to by any ONSB Company or ERISA Affiliate
         thereof for the benefit of employees, retirees, dependents, spouses,
         directors, independent contractors, or other beneficiaries and under
         which employees, retirees, dependents, spouses, directors, independent
         contractors, or other beneficiaries are eligible to participate
         (collectively, the "ONSB Benefit Plans"). Any of the ONSB Benefit Plans
         which is an "employee pension benefit plan," as that term is defined in
         Section 3(1) of ERISA, is referred to herein as a "ONSB ERISA Plan."
         Any ONSB ERISA Plan which is also a "defined benefit plan" (as defined
         in Section 414(j) of the Internal Revenue Code or Section 3(35) of
         ERISA) is referred to herein as a "ONSB Pension Plan." On or after
         September 26, 1980, neither ONSB nor any ONSB Company has had an
         "obligation to contribute" (as defined in ERISA Section 4212) to a
         "multi-employer plan" (as defined in ERISA Sections 4001(a)(3) and
         3(37)(A)).

                  (b) ONSB has delivered or made available to LSB prior to the
         execution of this Agreement correct and complete copies of the
         following documents: (i) all trust agreements or other funding
         arrangements for such ONSB Benefit Plans (including insurance
         contracts), and all amendments thereto, (ii) with respect to any such
         ONSB Benefit Plans or amendments, all determination letters, rulings,
         opinion letters, information letters, or advisory opinions issued by
         the Internal Revenue Service, the United States Department of Labor, or
         the Pension Benefit Guaranty Corporation after December 31, 1974, (iii)
         annual reports or returns, audited or unaudited financial statements,
         actuarial valuations and reports, and summary annual reports prepared
         for any ONSB Benefit Plan with respect to the most recent three plan
         years, and (iv) the most recent summary plan descriptions and any
         material modifications thereto.



                                      A-21
<PAGE>   122


                  (c) All ONSB Benefit Plans are in compliance with the
         applicable terms of ERISA, the Internal Revenue Code, and any other
         applicable Laws, the breach or violation of which are reasonably likely
         to have, individually or in the aggregate, a Material Adverse Effect on
         ONSB. Each ONSB ERISA Plan which is intended to be qualified under
         Section 401(a) of the Internal Revenue Code has received a favorable
         determination letter from the Internal Revenue Service, and ONSB is not
         aware of any circumstances which will or could result in revocation of
         any such favorable determination letter. Each trust created under any
         ONSB ERISA Plan has been determined to be exempt from Tax under Section
         501(a) of the Internal Revenue Code and ONSB is not aware of any
         circumstance which will or could result in revocation of such
         exemption. With respect to each ONSB Benefit Plan, except as disclosed
         in Section 5.12(c) of the ONSB Disclosure Memorandum, no event has
         occurred which will or could give rise to a loss of any intended Tax
         consequences under the Internal Revenue Code or to any Tax under
         Section 511 of the Internal Revenue Code. There is no material pending
         or threatened Litigation relating to any ONSB ERISA Plan. No ONSB
         Company has engaged in a transaction with respect to any ONSB Benefit
         Plan that, assuming the taxable period of such transaction expired as
         of the date hereof, would subject any ONSB Company to a Tax or penalty
         imposed by either Section 4975 of the Internal Revenue Code or Section
         502(i) of ERISA in amounts which are reasonably likely to have,
         individually or in the aggregate, a Material Adverse Effect on ONSB.

                  (d) No ONSB Pension Plan has any "unfunded current liability,"
         as that term is defined in Section 302(d)(8)(A) of ERISA, and the fair
         market value of the assets of any such plan exceeds the plan's "benefit
         liabilities," as that term is defined in Section 4001 (a)(16) of ERISA,
         when determined under actuarial factors that would apply if the plan
         terminated in accordance with all applicable legal requirements. Since
         the date of the most recent actuarial valuation, there has been (i) no
         material change in the financial position of any ONSB Pension Plan,
         (ii) no change in the actuarial assumptions with respect to any ONSB
         Pension Plan, and (iii) no increase in benefits under any ONSB Pension
         Plan as a result of plan amendments or changes in applicable Law which
         is reasonably likely to have, individually or in the aggregate, a
         Material Adverse Effect on ONSB or materially adversely affect the
         funding status of such plan. Neither any ONSB Pension Plan nor any
         "single-employer plan," within the meaning of Section 4001(a)(15) of
         ERISA, currently or formerly maintained by any ONSB Company, or
         single-employer plan of any entity which is considered an employer with
         ONSB under Section 4001 of ERISA or Section 414 of the Internal Revenue
         Code or Section 302 of ERISA (whether or not waived) (an "ERISA
         Affiliate") has an "accumulated funding deficiency" within the meaning
         of Section 412 of the Internal Revenue Code or Section 302 of ERISA. No
         ONSB Company has provided, or is required to provide, security to a
         ONSB Pension Plan or to any single-employer plan of an ERISA Affiliate
         pursuant to Section 401(a)(29) of the Internal Revenue Code.


                                      A-22
<PAGE>   123


                  (e) No liability under Title IV of ERISA has been or is
         expected to be incurred by any ONSB Company with respect to any defined
         benefit plan currently or formerly maintained by any of them or by any
         ERISA Affiliate.

                  (f) No ONSB Company has any obligations for retiree health and
         life benefits under any of the ONSB Benefit Plans.

                  (g) Except as disclosed in Section 5.12 of the ONSB Disclosure
         Memorandum, neither the execution and delivery of this Agreement, the
         Option Agreement or the Plan of Merger nor the consummation of the
         transactions contemplated hereby and thereby will (i) result in any
         payment (including, without limitation, severance, unemployment
         compensation, golden parachute, or otherwise) becoming due to any
         director or any employee of any ONSB Company from any ONSB Company
         under any ONSB Benefit Plan or otherwise, (ii) increase any benefits
         otherwise payable under any ONSB Benefit Plan, or (iii) result in any
         acceleration of the time of payment or vesting of any such benefit.

                  (h) To the Knowledge of ONSB, no oral or written
         representation or communication with respect to any aspect of the ONSB
         Benefit Plans has been made to employees of any of the ONSB Companies
         prior to the date hereof which is not in accordance with the written or
         otherwise preexisting terms and provisions of such plans. All ONSB
         Benefit Plan documents and annual reports or returns, audited or
         unaudited financial statements, actuarial valuations, summary annual
         reports, and summary plan descriptions issued with respect to the ONSB
         Benefit Plans are correct and complete in all material respects and
         there have been no changes in the information set forth therein.

                  (i) Except as disclosed in Section 5.12(i) of the ONSB
         Disclosure Memorandum, none of the ONSB Companies has paid, or
         committed to pay, any bonus or commissions to any agent, manager or
         other employee of any ONSB Company with respect to any period
         commencing after December 31, 1995.

                  5.13 MATERIAL CONTRACTS. Except as disclosed in Section 5.13
of the ONSB Disclosure Memorandum, none of the ONSB Companies, nor any of their
respective Assets, businesses, or operations, is a party to, or is bound or
affected by, or receives benefits under: (i) any employment, severance,
termination, consulting, or retirement Contract providing for aggregate payments
to any Person in any calendar year in excess of $50,000; (ii) any Contract
relating to the borrowing of money by any ONSB Company or the guarantee by any
ONSB Company of any such obligation (other than Contracts evidencing deposit
liabilities, purchases of federal funds, fully-secured repurchase agreements,
and Federal Home Loan Bank advances of depository institution Subsidiaries,
trade payables, and Contracts relating to borrowings or guarantees made in the
ordinary course of business); (iii) any Contracts between or among ONSB
Companies; and (iv) any other Contract or


                                      A-23
<PAGE>   124


amendment thereto that would be required to be filed as an exhibit to a Form
10-K filed by ONSB with the SEC as of the date of this Agreement if ONSB were
required to file a Form 10-K with the SEC (together with all Contracts referred
to in Sections 5.8 and 5.12(a) hereof, the "ONSB Contracts"). With respect to
each ONSB Contract: (i) the Contract is in full force and effect; (ii) no ONSB
Company is in Default thereunder; (iii) no ONSB Company has repudiated or waived
any material provision of any such Contract; and (iv) no other party to any such
Contract is, to the Knowledge of ONSB, in Default in any respect, or has
repudiated or waived any material provision thereunder. Except as disclosed in
Section 5.13 of the ONSB Disclosure Memorandum, all of the indebtedness of any
ONSB Company for money borrowed is prepayable at any time by such ONSB Company
without penalty or premium.

                  5.14 LEGAL PROCEEDINGS. Except as disclosed in Section 5.14 of
the ONSB Disclosure Memorandum, there is no Litigation instituted or pending,
or, to the Knowledge of ONSB, threatened (or unasserted but considered probable
of assertion and which if asserted would have at least a reasonable probability
of an unfavorable outcome) against any ONSB Company, or against any Asset,
interest, or right of any of them, nor are there any Orders of any Regulatory
Authorities, other governmental authorities, or arbitrators outstanding against
any ONSB Company. Section 5.14 of the ONSB Disclosure Memorandum includes a
summary report of all Litigation as of the date of this Agreement to which any
ONSB Company is a party and in which the estimated maximum exposure is $50,000
or more.

                  5.15 REPORTS. Since January 1, 1992, or the date of
organization if later, each ONSB Company has timely filed all reports and
statements, together with any amendments required to be made with respect
thereto, that it was required to file with any Regulatory Authority. As of their
respective dates, each of such reports and documents, including the financial
statements, exhibits, and schedules thereto, complied in all material respects
with all applicable Laws. As of its respective date, each such report and
document did not, in all material respects, contain any untrue statement of a
material fact or omit to state a material fact required to be stated therein or
necessary to make the statements made therein, in light of the circumstances
under which they were made, not misleading.

                  5.16 STATEMENTS TRUE AND CORRECT. None of the information
supplied or to be supplied by any ONSB Company or any Affiliate thereof for
inclusion in the Registration Statement to be filed by LSB with the SEC will,
when the Registration Statement becomes effective, be false or misleading with
respect to any material fact, or contain any untrue statement of material fact,
or omit to state any material fact required to be stated thereunder or necessary
to make the statements therein not misleading. None of the information supplied
or to be supplied by any ONSB Company or any Affiliate thereof for inclusion in
the ONSB Proxy Statement to be mailed to ONSB's shareholders in connection with
the Shareholders Meeting, and any other documents to be filed by a ONSB Company
or any Affiliate thereof with the SEC or any other Regulatory Authority in
connection with the


                                      A-24
<PAGE>   125


transactions contemplated hereby, will, at the respective time such documents
are filed, and with respect to the ONSB Proxy Statement, when first mailed to
the shareholders of ONSB, be false or misleading with respect to any material
fact, or contain any untrue statement of material fact, or omit to state any
material fact required to be stated thereunder or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading, or, in the case of the ONSB Proxy Statement or any amendment
thereof or supplement thereto, at the time of the Shareholders' Meeting, be
false or misleading with respect to any material fact, or omit to state any
material fact required to be stated thereunder or necessary to correct any
material statement in any earlier communication with respect to the solicitation
of any proxy for the Shareholders' Meeting. All documents that any ONSB Company
or any Affiliate thereof is responsible for filing with any Regulatory Authority
in connection with the transactions contemplated hereby will comply as to form
in all material respects with the provisions of applicable Law.

                  5.17 ACCOUNTING, TAX AND REGULATORY MATTERS. No ONSB Company
or any Affiliate thereof has taken any action, or agreed to take any action, or
has any Knowledge of any fact or circumstance that is reasonably likely to (i)
prevent the transactions contemplated hereby, including the Merger, from
qualifying, for "pooling-of-interests" accounting treatment consistent with GAAP
and the rules and regulations of the SEC or treatment as a "reorganization"
within the meaning of Section 368(a) of the Internal Revenue Code, or (ii)
materially impede or delay receipt of any Consents of Regulatory Authorities
referred to in Section 9.1(b) hereof or result in the imposition of a condition
or restriction of the type referred to in the last sentence of such Section.

                  5.18 STATE TAKEOVER LAWS. No action is necessary by any ONSB
Company to exempt the transactions contemplated by this Agreement from any
applicable "moratorium," "control share," "fair price," "business combination,"
or other anti-takeover Laws of the State of North Carolina (collectively,
"Takeover Laws"), including Articles 9 and 9A of the NCBCA.

                  5.19 CHARTER PROVISIONS. Each ONSB Company has taken all
action so that the entering into of this Agreement and the Option Agreement and
the consummation of the Merger and the other transactions contemplated by this
Agreement and the Option Agreement do not and will not result in the grant of
any rights to any Person (other than a LSB Company) under the Articles of
Incorporation, Bylaws, or other governing instruments of any ONSB Company or
restrict or impair the ability of LSB or any of its Subsidiaries to vote, or
otherwise to exercise the rights of a shareholder with respect to, shares of any
ONSB Company that may be directly or indirectly acquired or controlled by LSB.

                  5.20 SUPPORT AGREEMENTS. At least a majority of the 
directors of ONSB and the President and Chief Executive Officer and the Chairman
of the Board of ONSB have executed and delivered to LSB Support Agreements.



                                      A-25
<PAGE>   126


                  5.21 DERIVATIVES CONTRACTS. Neither ONSB nor any of its
Subsidiaries is a party to or has agreed to enter into an exchange-traded or
over-the-counter swap, forward, future, option, cap, floor or collar financial
contract, or any other interest rate or foreign currency protection contract
that is not included in the ONSB Financial Statements, which is a financial
derivative contract (including various combinations thereof).

                  5.22 D&O INSURANCE. ONSB has (i) reported all claims to its
Knowledge under its past and present directors' and officers' liability
insurance policies in accordance with the terms and conditions of such policies
to permit coverage thereunder, and (ii) paid on a timely basis all premiums due
under such policies, and such policies have been in effect since the
organization of ONSB and no lapse of coverage has occurred since such date of
organization of ONSB.



                                    ARTICLE 6
                      REPRESENTATIONS AND WARRANTIES OF LSB

                  LSB and LSB Bank hereby jointly and severally represent and
warrant to ONSB as follows:

                  6.1 ORGANIZATION, STANDING AND POWER. LSB is a corporation
duly organized, validly existing, and in good standing under the Laws of the
State of North Carolina, and has the corporate power and authority to carry on
its business as now conducted and to own, lease and operate its Assets. LSB is
duly qualified or licensed to transact business as a foreign corporation in good
standing in the States of the United States and foreign jurisdictions where the
character of its Assets or the nature or conduct of its business requires it to
be so qualified or licensed, except for such jurisdictions in which the failure
to be so qualified or licensed is not reasonably likely to have, individually or
in the aggregate, a Material Adverse Effect on LSB.

                  6.2 AUTHORITY; NO BREACH BY AGREEMENT.

                  (a) LSB has the corporate power and authority necessary to
         execute, deliver and perform its obligations under this Agreement, the
         Option Agreement and the Confidentiality Agreement and to consummate
         the transactions contemplated hereby and thereby, subject to the
         approval of the issuance of LSB Common Stock contemplated herein by the
         holders of a majority of the outstanding shares of LSB Common Stock.
         The execution, delivery and performance of this Agreement, the Option
         Agreement and the Confidentiality Agreement and the consummation of the
         transactions contemplated herein and therein, including the Merger,
         have been duly and validly authorized by all necessary corporate action
         in respect thereof on the part of LSB, subject to the approval of the
         issuance of LSB Common Stock contemplated



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<PAGE>   127




         herein by the holders of a majority of the outstanding shares of LSB
         Common Stock. Subject to such shareholder approval, this Agreement, the
         Option Agreement and the Confidentiality Agreement represent legal,
         valid, and binding obligations of LSB, enforceable against LSB in
         accordance with their respective terms (except in all cases as such
         enforceability may be limited by applicable bankruptcy, insolvency,
         reorganization, moratorium, or similar Laws affecting the enforcement
         of creditors' rights generally and except that the availability of the
         equitable remedy of specific performance or injunctive relief is
         subject to the discretion of the court before which any proceeding may
         be brought).

                  (b) Neither the execution and delivery of this Agreement, the
         Option Agreement and the Confidentiality Agreement by LSB, nor the
         consummation by LSB of the transactions contemplated hereby and
         thereby, nor compliance by LSB with any of the provisions hereof and
         thereof, will (i) conflict with or result in a breach of any provision
         of LSB's Articles of Incorporation or Bylaws, or (ii) except as
         disclosed in Section 6.2(b) of the LSB Disclosure Memorandum,
         constitute or result in a Default under, or require any Consent
         pursuant to, or result in the creation of any Lien on any Asset of any
         LSB Company under, any Contract or Permit of any LSB Company, or, (iii)
         except as disclosed in Section 6.2(b) of the LSB Disclosure Memorandum,
         violate any Law or Order applicable to any LSB Company or any of their
         respective Assets.

                  (c) Except as disclosed in Section 6.2(c) of the LSB
         Disclosure Memorandum, no notice to, filing with, or Consent of, any
         public body or authority is necessary for the consummation by LSB or
         LSB Bank of the Merger and the other transactions contemplated in this
         Agreement, the Option Agreement, the Confidentiality Agreement and the
         Plan of Merger.

                  6.3 CAPITAL STOCK.

                  (a) The authorized capital stock of LSB consists of 10,000,000
         shares of LSB Common Stock, of which 5,403,539 shares were issued and
         outstanding as of September 30, 1996. All of the issued and outstanding
         shares of LSB Common Stock are, and all of the shares of LSB Common
         Stock to be issued in exchange for shares of ONSB Common Stock upon
         consummation of the Merger, when issued in accordance with the terms of
         this Agreement, will be, duly and validly issued and outstanding and
         fully paid and nonassessable. None of the outstanding shares of LSB
         Common Stock has been, and none of the shares of LSB Common Stock to be
         issued in exchange for shares of ONSB Common Stock upon consummation of
         the Merger, will be, issued in violation of any preemptive rights of
         the current or past shareholders of LSB. LSB has reserved 750,000
         shares of LSB Common Stock for issuance under the LSB Stock Plans,
         pursuant to which options to purchase not more


                                      A-27
<PAGE>   128


         than 271,395 shares of LSB Common Stock were outstanding as of February
         21, 1997.

                  (b) Except as disclosed in Section 6.3(a) hereof, there are no
         shares of capital stock or other equity securities of LSB outstanding
         as of September 30, 1996 and no outstanding Rights relating to the
         capital stock of LSB as of February 21, 1997.


                  6.4 SEC FILINGS; FINANCIAL STATEMENTS.

                  (a) LSB has filed and made available to ONSB all forms,
         reports, and documents required to be filed by LSB with the SEC since
         December 31, 1993, other than registration statements on Forms S-4 and
         S-8 (collectively, the "LSB SEC Reports"). The LSB SEC Reports (i) at
         the time filed, complied in all material respects with the applicable
         requirements of the 1933 Act and the 1934 Act, as the case may be, and
         (ii) did not at the time they were filed (or if amended or superseded
         by a filing prior to the date of this Agreement, then on the date of
         such filing) contain any untrue statement of a material fact or omit to
         state a material fact required to be stated in such LSB SEC Reports or
         necessary in order to make the statements in such LSB SEC Reports, in
         light of the circumstances under which they were made, not misleading.

                  (b) Each of the LSB Financial Statements contained in the LSB
         SEC Reports, including any LSB SEC Reports filed after the date of this
         Agreement until the Effective Time, complied or will comply as to form
         in all material respects with the applicable published rules and
         regulations of the SEC with respect thereto, was or will be prepared in
         accordance with GAAP applied on a consistent basis throughout the
         periods involved (except as may be indicated in the notes to such
         financial statements or, in the case of unaudited statements, as
         permitted by Form 10-Q of the SEC), and fairly presented or will fairly
         present the consolidated financial position of LSB and its Subsidiaries
         as at the respective dates and the consolidated results of its
         operations and cash flows for the periods indicated, except that the
         unaudited interim financial statements were or are subject to normal
         and recurring year-end adjustments which were nor or are not expected
         to be material in amount.

                  6.5 ABSENCE OF CERTAIN CHANGES OR EVENTS AND UNDISCLOSED
         LIABILITIES.

                  (a) Since September 30, 1996, (i) there have been no events,
         changes or occurrences which have had, or are reasonably likely to
         have, individually or in the aggregate, a Material Adverse Effect on
         LSB, and (ii) the LSB Companies have not taken any action, or failed to
         take any action, prior to the date of this Agreement, which action or
         failure, if taken after the date of this Agreement, would represent or


                                      A-28
<PAGE>   129



         result in a material breach or violation of any of the covenants and
         agreements of LSB provided in Article 7 hereof.

                  (b) No LSB Company has any Liabilities that are reasonably
         likely to have, individually or in the aggregate, a Material Adverse
         Effect on LSB, except Liabilities which are accrued or reserved against
         in the consolidated balance sheets of LSB as of September 30, 1996
         included in the LSB Financial Statements or reflected in the notes
         thereto. No LSB Company has incurred or paid any Liability since
         September 30, 1996, except for such Liabilities incurred or paid in the
         ordinary course of business consistent with past business practice and
         which are not reasonably likely to have, individually or in the
         aggregate, a Material Adverse Effect on LSB.

                  6.6 TAX MATTERS.

                  (a) All Tax Returns required to be filed by or on behalf of
         any of the LSB Companies have been timely filed, or requests for
         extensions have been timely filed, granted, and have not expired for
         periods ended on or before December 31, 1995, and on or before the date
         of the most recent fiscal year end immediately preceding the Effective
         Time, and all Tax Returns filed are complete and accurate to the
         Knowledge of LSB. All Taxes shown on filed returns have been paid.
         Except as disclosed in Section 6.6(a) of the LSB Disclosure Memoranda,
         there is no audit examination, deficiency, or refund Litigation with
         respect to any Taxes. All Taxes and other Liabilities due with respect
         to completed and settled examinations or concluded Litigation have been
         paid.

                  (b) None of the LSB Companies has executed an extension or
         waiver of any statute of limitations on the assessment or collection of
         any Tax due that is currently in effect.

                  (c) Adequate provision for any Taxes due or to become due for
         any of the LSB Companies for the period or periods through and
         including the date of the respective LSB Financial Statements has been
         made and is reflected on such LSB Financial Statements.

                  (d) Deferred Taxes of the LSB Companies have been provided for
         in the LSB Financial Statements in accordance with GAAP.

                  6.7 COMPLIANCE WITH LAWS. LSB is duly registered as a bank
holding company under the BHC Act. Each LSB Company has in effect all Permits
necessary for it to own, lease or operate its Assets and to carry on its
business as now conducted, except for those Permits the absence of which is not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on LSB, and there has occurred no Default under any such Permit, other
than Defaults which are not reasonably likely to have, individually or in


                                      A-29
<PAGE>   130



the aggregate, a Material Adverse Effect on LSB. Except as disclosed in Section
6.7 of the LSB Disclosure Memorandum, no LSB Company:

                  (a) is in violation of any Laws, Orders or Permits applicable
         to its business or employees conducting its business, except for
         violations which are not reasonably likely to have, individually or in
         the aggregate, a Material Adverse Effect on LSB; and

                  (b) has received any notification or communication from any
         agency or department of federal, state, or local government or any
         Regulatory Authority or the staff thereof (i) asserting that any LSB
         Company is not in compliance with any of the Laws or Orders which such
         governmental authority or Regulatory Authority enforces, where such
         noncompliance is reasonably likely to have, individually or in the
         aggregate, a Material Adverse Effect on LSB, (ii) threatening to revoke
         any Permits, the revocation of which is reasonably likely to have,
         individually or in the aggregate, a Material Adverse Effect on LSB, or
         (iii) requiring any LSB Company (A) to enter into or consent to the
         issuance of a cease and desist order, formal agreement, directive,
         commitment or memorandum of understanding, or (B) to adopt any Board or
         similar undertaking, which restricts materially the conduct of its
         business, or in any manner relates to its capital adequacy, its credit
         or reserve policies, its management, or the payment of dividends.

                  6.8 LEGAL PROCEEDINGS. Except as disclosed in Section 6.8 of
the LSB Disclosure Memorandum, there is no Litigation instituted or pending, or,
to the Knowledge of LSB, threatened (or unasserted but considered probable of
assertion and which if asserted would have at least a reasonable probability of
an unfavorable outcome) against any LSB Company, or against any Asset, interest,
or right of any of them that is reasonably likely to have, individually or in
the aggregate, a Material Adverse Effect on LSB, nor are the any Orders of any
Regulatory Authorities, other governmental authorities, or arbitrators
outstanding against any LSB Company, that are reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on LSB.

                  6.9 REPORTS. Since January 1, 1992, or the date of
organization if later, each LSB Company has timely filed all reports and
statements, together with any amendments required to be made with respect
thereto, that it was required to file with (i) the SEC, including, but not
limited to, Forms 10-K, Forms 10-Q, Form 8-K, and proxy statements; (ii) other
Regulatory Authorities; and (iii) any applicable state securities or banking
authorities (except, in the case of state securities authorities, failures to
file which are not reasonably likely to have, individually or in the aggregate,
a Material Adverse Effect on LSB). As of their respective date, each of such
reports and documents, including the financial statements, exhibits, and
schedules thereto, complied in all material respects with all applicable Laws.
As of its respective date, each such report and document did not, in all
material respects, contain any untrue statement of a material fact or omit to
state a material


                                      A-30
<PAGE>   131



fact required to be stated therein or necessary to make the statements made
therein, in light of the circumstances under which they were made, not
misleading.

                  6.10 STATEMENTS TRUE AND CORRECT. None of the information
supplied or to be supplied by any LSB Company or any Affiliate thereof for
inclusion in the Registration Statement to be filed by LSB with the SEC, will,
when the Registration Statement becomes effective, be false or misleading with
respect to any material fact, or contain any untrue statement of a material
fact, or omit to state any material fact required to be stated thereunder or
necessary to make the statements therein not misleading. None of the information
supplied or to be supplied by any LSB Company or any Affiliate thereof for
inclusion in the ONSB Proxy Statement to be mailed to ONSB's shareholders in
connection with the Shareholders' Meeting, and any other documents to be filed
by any LSB Company or any Affiliate thereof with the SEC or any other Regulatory
Authority in connection with the transactions contemplated hereby, will, at the
respective time such documents are filed, and with respect to the ONSB Proxy
Statement, when first mailed to the shareholders of ONSB, be false or misleading
with respect to any material fact, or contain any untrue statement of a material
fact, or omit to state any material fact required to be stated thereunder or
necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading, or, in the case of the ONSB Proxy
Statement or any amendment thereof or supplement thereto, at the time of the
Shareholders' Meeting, be false or misleading with respect to any material fact,
or contain any untrue statements of material fact, or omit to state any material
fact required to be stated thereunder or necessary to correct any statement in
any earlier communication with respect to the solicitation of any proxy for the
Shareholders' Meeting. All documents that any LSB Company or any Affiliate
thereof is responsible for filing with any Regulatory Authority in connection
with the transactions contemplated hereby will comply as to form in all material
respects with the provisions of applicable Law.

                  6.11 ACCOUNTING, TAX AND REGULATORY MATTERS. No LSB Company or
any Affiliate thereof has taken any action, or agreed to take any action, or has
any Knowledge of any fact or circumstance that is reasonably likely to (i)
prevent the transactions contemplated hereby, including the Merger, from
qualifying for "pooling-of-interests" accounting treatment consistent with GAAP
and the rules and regulations of the SEC or treatment as a "reorganization"
within the meaning of Section 368(a) of the Internal Revenue Code, or (ii)
materially impede or delay receipt of any Consents of Regulatory Authorities
referred to in Section 9.1(b) hereof or result in the imposition of a condition
or restriction of the type referred to in the last sentence of such Section.

                  6.12 AUTHORITY OF LSB BANK. LSB Bank is a state chartered bank
duly organized, validly existing, and in good standing under the Laws of the
State of North Carolina as a wholly owned, first tier Subsidiary of LSB. LSB
Bank has the corporate power and authority necessary to execute, deliver, and
perform its obligations under this Agreement and the Plan of Merger and to
consummate the transactions contemplated hereby


                                      A-31
<PAGE>   132



and thereby, subject to the approval of this Agreement and the Plan of Merger by
LSB, its sole shareholder. The execution, delivery, and performance of this
Agreement and the Plan of Merger and the consummation of the transactions
contemplated herein and therein, including the Merger, will be duly and validly
authorized by all necessary corporate action in respect thereof on the part of
LSB Bank, subject to the approval of this Agreement and the Plan of Merger by
LSB, its sole shareholder. Subject to such shareholder approval, this Agreement,
and, when executed and delivered, the Plan of Merger will, represent legal,
valid, and binding obligations of LSB Bank, enforceable against LSB Bank in
accordance with their respective terms (except in all cases as such
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, or similar Laws affecting the enforcement of
creditors' rights generally and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the discretion
of the court before which any proceeding may be brought).

                  6.13 ENVIRONMENTAL MATTERS.

                  (a) To the Knowledge of LSB, each LSB Company, its
         Participation Facilities, and its Loan Properties are, and have been,
         in compliance with all Environmental Laws, except for violations which
         are not reasonably likely to have, individually or in the aggregate, a
         Material Adverse Effect on LSB.

                  (b) There is no Litigation pending or, to the Knowledge of
         LSB, threatened before any court, governmental agency, or board or
         other forum in which any LSB Company or any of its Loan Properties or
         Participation Facilities has been or, with respect to threatened
         Litigation, may be named as a defendant or potentially responsible
         party (i) for alleged noncompliance (including by any predecessor) with
         any Environmental Law or (ii) relating to the release into the
         environment of any Hazardous Material, whether or not occurring at, on,
         under, or involving a site owned, leased, or operated by any LSB
         Company or any of its Loan Properties or Participation Facilities.

                  (c) To the Knowledge of LSB, there is no reasonable basis for
         any Litigation of a type described in subsection (b) above, except such
         as is not reasonably likely to have, individually or in the aggregate,
         a Material Adverse Effect on LSB.

                  (d) To the Knowledge of LSB, there have been no releases of
         Hazardous Materials in, on, under, or affecting any LSB Company's
         current properties, or any Participation Facility or Loan Property of
         an LSB Company, except such as are not reasonably likely to have,
         individually or in the aggregate, a Material Adverse Effect on LSB.



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                  6.14 LABOR RELATIONS. No LSB Company is the subject of any
Litigation asserting that it or any other LSB Company has committed an unfair
labor practice (within the meaning of the National Labor Relations Act or
comparable state law) or seeking to compel it or any other LSB Company to
bargain with any labor organization as to wages or conditions of employment, nor
is any LSB Company a party to or bound by any collective bargaining agreement,
contract, or other agreement or understanding with a labor union or labor
organization, nor is there any strike or other labor dispute involving any LSB
Company, pending or threatened, or to the Knowledge of LSB is there any activity
involving any LSB Company's employees seeking to certify a collective bargaining
unit or engaging in any other organization activity.

                  6.15 EMPLOYEE BENEFIT PLANS.

                  (a) LSB has disclosed in Section 6.15 of the LSB Disclosure
         Memorandum, and has delivered or made available to ONSB prior to the
         execution of this Agreement correct and complete copies, in each case,
         of all pension, retirement, profit-sharing, deferred compensation,
         stock option, employee stock ownership, severance pay, vacation, bonus,
         or other incentive plan, all other written employee programs,
         arrangements, or agreements, all medical, vision, dental, or other
         health plans, all life insurance plans, and all other employee benefit
         plans or fringe benefit plans, including, without limitation, "employee
         benefit plans" as that term is defined in Section 3(3) of ERISA,
         currently or previously adopted, maintained by, sponsored in whole or
         in part by, or contributed to by any LSB Company or ERISA Affiliate
         thereof for the benefit of employees, retirees, dependents, spouses,
         directors, independent contractors, or other beneficiaries and under
         which employees, retirees, dependents, spouses, directors, independent
         contractors, or other beneficiaries are eligible to participate
         (collectively, the "LSB Benefit Plans"). Any of the LSB Benefit Plans
         which is an "employee pension benefit plan," as that term is defined in
         Section 3(1) of ERISA, is referred to herein as a "LSB ERISA Plan." Any
         LSB ERISA Plan which is also a "defined benefit plan" (as defined in
         Section 414(j) of the Internal Revenue Code or Section 3(35) of ERISA)
         is referred to herein as a "LSB Pension Plan." On or after September
         26, 1980, neither LSB nor any LSB Company has had an "obligation to
         contribute" (as defined in ERISA Section 4212) to a "multi-employer
         plan" (as defined in ERISA Sections 4001(a)(3) and 3(37)(A)).

                  (b) LSB has delivered or made available to ONSB prior to the
         execution of this Agreement correct and complete copies of the
         following documents: (i) all trust agreements or other funding
         arrangements for such LSB Benefit Plans (including insurance
         contracts), and all amendments thereto, (ii) with respect to any such
         LSB Benefit Plans or amendments, all determination letters, rulings,
         opinion letters, information letters, or advisory opinions issued by
         the Internal Revenue Service, the United States Department of Labor, or
         the Pension Benefit Guaranty Corporation after December 31, 1974, (iii)
         annual reports or returns, audited or unaudited financial


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         statements, actuarial valuations and reports, and summary annual
         reports prepared for any LSB Benefit Plan with respect to the most
         recent three plan years, and (iv) the most recent summary plan
         descriptions and any material modifications thereto.

                  (c) All LSB Benefit Plans are in compliance with the
         applicable terms of ERISA, the Internal Revenue Code, and any other
         applicable Laws, the breach or violation of which are reasonably likely
         to have, individually or in the aggregate, a Material Adverse Effect on
         LSB. Each LSB ERISA Plan which is intended to be qualified under
         Section 401(a) of the Internal Revenue Code has received a favorable
         determination letter from the Internal Revenue Service, and LSB is not
         aware of any circumstances which will or could result in revocation of
         any such favorable determination letter. Each trust created under any
         LSB ERISA Plan has been determined to be exempt from Tax under Section
         501(a) of the Internal Revenue Code and LSB is not aware of any
         circumstance which will or could result in revocation of such
         exemption. With respect to each LSB Benefit Plan, except as disclosed
         in Section 6.15(c) of the LSB Disclosure Memorandum, no event has
         occurred which will or could give rise to a loss of any intended Tax
         consequences under the Internal Revenue Code or to any Tax under
         Section 511 of the Internal Revenue Code. There is no material pending
         or threatened Litigation relating to any LSB ERISA Plan. No LSB Company
         has engaged in a transaction with respect to any LSB Benefit Plan that,
         assuming the taxable period of such transaction expired as of the date
         hereof, would subject any LSB Company to a Tax or penalty imposed by
         either Section 4975 of the Internal Revenue Code or Section 502(i) of
         ERISA in amounts which are reasonably likely to have, individually or
         in the aggregate, a Material Adverse Effect on LSB.

                  (d) No LSB Pension Plan has any "unfunded current liability,"
         as that term is defined in Section 302(d)(8)(A) of ERISA, and the fair
         market value of the assets of any such plan exceeds the plan's "benefit
         liabilities," as that term is defined in Section 4001 (a)(16) of ERISA,
         when determined under actuarial factors that would apply if the plan
         terminated in accordance with all applicable legal requirements. Since
         the date of the most recent actuarial valuation, there has been (i) no
         material change in the financial position of any LSB Pension Plan, (ii)
         no change in the actuarial assumptions with respect to any LSB Pension
         Plan, and (iii) no increase in benefits under any LSB Pension Plan as a
         result of plan amendments or changes in applicable Law which is
         reasonably likely to have, individually or in the aggregate, a Material
         Adverse Effect on LSB or materially adversely affect the funding status
         of such plan. Neither any LSB Pension Plan nor any "single-employer
         plan," within the meaning of Section 4001(a)(15) of ERISA, currently or
         formerly maintained by any LSB Company, or single-employer plan of any
         entity which is considered an employer with LSB under Section 4001 of
         ERISA or Section 414 of the Internal Revenue Code or Section 302 of
         ERISA (whether or not waived) (an "ERISA Affiliate") has an
         "accumulated funding deficiency" within the meaning of Section 412 of
         the Internal Revenue Code or Section 302 of ERISA. No LSB Company has


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         provided, or is required to provide, security to a LSB Pension Plan or
         to any single-employer plan of an ERISA Affiliate pursuant to Section
         401(a)(29) of the Internal Revenue Code.

                  (e) No liability under Title IV of ERISA has been or is
         expected to be incurred by any LSB Company with respect to any defined
         benefit plan currently or formerly maintained by any of them or by any
         ERISA Affiliate.

                  (f) Except as disclosed in Section 6.15(f) of the LSB
         Disclosure Memorandum, no LSB Company has any obligations for retiree
         health and life benefits under any of the LSB Benefit Plans.

                  (g) Except as disclosed in Section 6.15(g) of the LSB
         Disclosure Memorandum, neither the execution and delivery of this
         Agreement, the Option Agreement or the Plan of Merger nor the
         consummation of the transactions contemplated hereby and thereby will
         (i) result in any payment (including, without limitation, severance,
         unemployment compensation, golden parachute, or otherwise) becoming due
         to any director or any employee of any LSB Company from any LSB Company
         under any LSB Benefit Plan or otherwise, (ii) increase any benefits
         otherwise payable under any LSB Benefit Plan, or (iii) result in any
         acceleration of the time of payment or vesting of any such benefit.

                  (h) To the Knowledge of LSB, no oral or written representation
         or communication with respect to any aspect of the LSB Benefit Plans
         has been made to employees of any of the LSB Companies prior to the
         date hereof which is not in accordance with the written or otherwise
         preexisting terms and provisions of such plans. All LSB Benefit Plan
         documents and annual reports or returns, audited or unaudited financial
         statements, actuarial valuations, summary annual reports, and summary
         plan descriptions issued with respect to the LSB Benefit Plans are
         correct and complete in all material respects and there have been no
         changes in the information set forth therein.


                                    ARTICLE 7
                    CONDUCT OF BUSINESS PENDING CONSUMMATION

                  7.1 AFFIRMATIVE COVENANTS OF ONSB. From the date of this
Agreement until the earlier of the Effective Time or the termination of this
Agreement in accordance with Article 10 hereof, unless the prior written consent
of LSB shall have been obtained, and except as otherwise expressly contemplated
herein, ONSB shall, and shall cause each of its Subsidiaries to: (a) operate its
business only in the usual, regular, and ordinary course; (b) preserve intact
its business organization and Assets and maintain its rights and franchises; (c)
take no action which would (i) adversely affect the ability of any Party to
obtain any


                                      A-35
<PAGE>   136


Consents required for the transactions contemplated hereby without imposition of
a condition or restriction of the type referred to in the last sentence of
Section 9.1(b) hereof, or (ii) adversely affect the ability of any Party to
perform its covenants and agreements under this Agreement and to consummate the
Merger; and (d) work with LSB and its Representatives to achieve appropriate
operating efficiencies and to conform the accounting policies and practices of
all ONSB Companies to those of LSB and its Subsidiaries.

                  7.2 NEGATIVE COVENANTS OF ONSB. From the date of this
Agreement until the earlier of the Effective Time or the termination of this
Agreement in accordance with Article 10 hereof, ONSB covenants and agrees that
it will not do or agree or commit to do, or permit any of its Subsidiaries to do
or agree or commit to do, any of the following without the prior written consent
of the chief executive officer or president of LSB:

                  (a) amend the Articles of Incorporation, Bylaws or other
         governing instruments of any ONSB Company; or

                  (b) incur, guarantee, or otherwise become responsible for, any
         additional debt obligation or other obligation for borrowed money
         (other than indebtedness of a ONSB Company to another ONSB Company) in
         excess of an aggregate of $100,000 (for the ONSB Companies on a
         consolidated basis) except in the ordinary course of the business of
         ONSB Companies consistent with past practices (which shall include, for
         ONSB, creation of deposit liabilities, purchases of federal funds,
         advances from the Federal Home Loan Bank with maturities of less than
         six (6) months, and entry into repurchase agreements fully secured by
         U.S. government or agency securities), or forgive any indebtedness of
         any Person owed to any ONSB Company in excess of $10,000, or impose, or
         suffer the imposition, on any Asset of any ONSB Company of any Lien or
         permit any such Lien to exist (other than in connection with deposits,
         repurchase agreements, bankers acceptances, "treasury tax and loan"
         accounts established in the ordinary course of business, the
         satisfaction of legal requirements in the exercise of trust powers, and
         Liens in effect as of the date hereof that are disclosed in the ONSB
         Disclosure Memorandum); or

                  (c) repurchase, redeem, or otherwise acquire or exchange
         (other than exchanges in the ordinary course under employee benefit
         plans), directly or indirectly, any shares, or any securities
         convertible into any shares, of the capital stock of any ONSB Company,
         or declare or pay any dividend or make any other distribution in
         respect of ONSB's capital stock; or

                  (d) except for this Agreement, or pursuant to the exercise of
         stock options or warrants outstanding as of the date hereof and
         pursuant to the terms thereof in existence on the date hereof, or
         pursuant to the Option Agreement, issue, sell, pledge, encumber,
         authorize the issuance of, enter into any Contract to issue, sell,
         pledge, encumber, or authorize the issuance of, or otherwise permit to
         become outstanding,


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         any additional shares of ONSB Common Stock or any other capital stock
         of any ONSB Company, or any stock appreciation rights, or any option,
         warrant, conversion, or other right to acquire any such stock, or any
         security convertible into any such stock; or

                  (e) adjust, split, combine, or reclassify any capital stock of
         any ONSB Company or issue or authorize the issuance of any other
         securities in respect of or in substitution for shares of ONSB Common
         Stock, or sell, lease, mortgage or otherwise dispose of or otherwise
         encumber (i) any shares of capital stock of any ONSB Subsidiary (unless
         any such shares of stock are sold or otherwise transferred to another
         ONSB Company), or (ii) any Asset other than in the ordinary course of
         business for reasonable and adequate consideration; or

                  (f) except for purchases of U.S. Treasury securities or U.S.
         Government agency securities, which in either case have maturities of
         three (3) years or less, purchase any securities or make any material
         investment, either by purchase of stock of securities, contributions to
         capital, Asset transfers, or purchase of any Assets, in any Person
         other than a wholly owned ONSB Subsidiary, or otherwise acquire direct
         or indirect control over any Person, other than in connection with (i)
         foreclosures in the ordinary course of business, or (ii) acquisitions
         of control by ONSB in its fiduciary capacity; or

                  (g) grant any increase in compensation or benefits to the
         employees or officers of any ONSB Company, except in accordance with
         past practice disclosed in Section 7.2(g) of the ONSB Disclosure
         Memorandum or as required by Law; pay any severance or termination pay
         or any bonus other than pursuant to written policies or written
         Contracts in effect on the date of this Agreement and disclosed in
         Section 7.2(g) of the ONSB Disclosure Memorandum, and enter into or
         amend any severance agreements with officers of any ONSB Company; grant
         any increase in fees or other increases in compensation or other
         benefits to directors of any ONSB Company; or voluntarily accelerate
         the vesting of any stock options or other stock-based compensation or
         employee benefits; or

                  (h) except as contemplated in this Agreement, enter into or
         amend any employment Contract between any ONSB Company and any Person
         (unless such amendment is required by Law) that the ONSB Company does
         not have the unconditional right to terminate without Liability (other
         than Liability for services already rendered), at any time on or after
         the Effective Time; or

                  (i) adopt any new employee benefit plan or program of any ONSB
         Company or make any change in or to any existing employee benefit plans
         or programs of any ONSB Company other than any such change that is
         required by Law


                                      A-37
<PAGE>   138



         or that, in the opinion of counsel, is necessary or advisable to
         maintain the tax qualified status of any such plan; or

                  (j) make any significant change in any Tax or accounting
         methods, principles, or practices or systems of internal accounting
         controls, except as may be necessary to conform to changes in Tax Laws
         or regulatory accounting requirements or GAAP; or

                  (k) commence any Litigation other than in accordance with past
         practice, settle any Litigation involving any Liability of any ONSB
         Company for money damages in excess of $10,000 or restrictions upon the
         operations of any ONSB Company; or

                  (l) except in the ordinary course of business, enter into,
         modify, amend or terminate any material Contract or waive, release,
         compromise or assign any material rights or claims thereunder.

                  7.3 COVENANTS OF LSB. From the date of this Agreement until
the earlier of the Effective Time or the termination of this Agreement in
accordance with Article 10 hereof, LSB covenants and agrees that it shall (a)
continue to conduct its business and the business of its Subsidiaries in a
manner, designed in its reasonable judgment, to enhance the long-term value of
the LSB Common Stock and the business prospects of the LSB Companies and to the
extent consistent therewith use all commercially reasonable best efforts to
preserve intact the LSB Companies' core businesses and goodwill with their
respective employees and the communities they serve, and (b) take no action
which would (i) materially adversely affect the ability of any Party to obtain
any Consents required for the transactions contemplated hereby without
imposition of a condition or restriction of the type referred to in the last
sentence of Section 9.1(b) hereof, or (ii) materially adversely affect the
ability of any Party to perform its covenants and agreements under this
Agreement; provided, that the foregoing shall not prevent any LSB Company from
acquiring any other company or discontinuing or disposing of any of its Assets
or business if such action is, in the judgment of LSB, desirable in the conduct
of the business of LSB and its Subsidiaries. LSB further covenants and agrees
that it will not: (x) without the prior written consent of the chief executive
officer, president or chairman of the Board of ONSB, amend the Articles of
Incorporation or Bylaws of LSB, in each case, in any manner adverse to the
holders of ONSB Common Stock, or (y) declare and pay any cash dividends on the
LSB Common Stock except for regular cash dividends on the LSB Common Stock with
record and payment dates in accordance with LSB's past record dates for cash
dividends.

                  7.4 ADVERSE CHANGES IN CONDITION. Each Party agrees to give
written notice promptly to the other Party upon becoming aware of the occurrence
or impending occurrence of any event or circumstance relating to it or any of
its Subsidiaries which (i) is reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on it,


                                      A-38
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or (ii) is reasonable likely to cause or constitute a material breach of any of
its representations, warranties, or covenants contained herein, and to use its
commercially reasonable best efforts to prevent or promptly to remedy the same.

                  7.5 REPORTS. Each Party and its Subsidiaries shall file all
reports required to be filed by it with Regulatory Authorities between the date
of this Agreement and the Effective Time and such Party shall deliver to the
other Party copies of all such reports filed by such Party and its Subsidiaries
promptly after the same are filed. If financial statements are contained in any
such reports filed with the SEC, in the case of LSB, or the FRB, in the case of
ONSB, such financial statements will fairly present the consolidated financial
position of the entity filing such statements as of the dates indicated and the
consolidated results of operations, changes in shareholders' equity, and cash
flows for the periods then ended in accordance with GAAP (subject in the case of
interim financial statements to normal recurring year-end adjustments that are
not material). As of their respective dates, such reports filed with the SEC or
the FRB, as the case may be, will comply in all material respects with the
Securities Laws, in the case of reports filed with the SEC, and the applicable
Laws enforced by the FRB, in the case of reports filed with the FRB, and will
not contain any untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made, not
misleading. Any financial statements contained in any other reports to another
Regulatory Authority shall be prepared in accordance with Laws applicable to
such reports.

                  7.6 ONSB RIGHT TO RECOMMEND DIRECTORS; ADDITIONAL OFFICERS.
From the date of this Agreement until the earlier of the date ten (10) days
prior to the scheduled Closing Date or the termination of this Agreement in
accordance with Article 10 hereof, ONSB shall have the right (subject to
shareholder requirement and age restrictions in the Bylaws of LSB) to (i)
recommend candidates to fill two (2) additional directorships on the class of
directors which terms expire at the 1998 annual meeting of LSB shareholders (the
"1998 Class"), which two additional directorships on the 1998 Class LSB's Board
of Directors will authorize on or before the Closing Date (expanding the Board
from 12 to 14 directorships), and (ii) specify which of those candidates shall
be reelected upon expiration of his or her term to fill (x) one (1) additional
directorship on the class of directors which terms expire at the 1999 annual
meeting of LSB shareholders (the "1999 Class"), and (y) one (1) additional
directorship on the class of directors which terms expire at the 2000 annual
meeting of LSB shareholders (the "2000 Class"), which additional directorships
on the 1999 Class and the 2000 Class LSB's Board of Directors will authorize on
or before the 1998 annual meeting of LSB shareholders. LSB shall notify ONSB in
writing of its Board's decisions whether to accept or reject candidates
recommended by ONSB to fill such two (2) additional directorships on the 1998
Class and to fill such additional directorships on the 1999 Class and the 2000
Class. Prior to the Effective Time, LSB's Board of Directors shall (subject to
shareholder requirement and age restrictions in the Bylaws of LSB) elect the two
candidates accepted by the LSB Board to fill the two (2) additional
directorships on the 1998


                                      A-39
<PAGE>   140



Class, provided such elections shall be contingent and become effective upon the
Closing of the Merger, and in connection with the 1998 annual meeting of LSB
shareholders, LSB's Board of Directors shall (subject to the Articles of
Incorporation and Bylaws of LSB and the occurrence of the Merger) recommend in
the proxy statement to the LSB shareholders the election of the particular
candidates accepted by the LSB Board to fill the one (1) additional directorship
on the 1999 Class and the one (1) additional directorship on the 2000 Class.
Notwithstanding anything to the contrary in this Section, the LSB Board may
reject any person(s) recommended by ONSB pursuant to this Section which in the
reasonable good faith judgment of the LSB Board could reasonably likely have an
adverse effect upon the LSB Board's ability to deliberate and take actions for
the benefit of the shareholders of LSB. Shortly after the election to LSB's
Board of Directors of the candidates recommended by ONSB as provided above (and
prior to the Effective Time with respect to candidates to fill the additional
directorships on the 1998 Class), LSB shall (subject to the Articles of
Incorporation and Bylaws of LSB Bank) cause such persons to be elected to LSB
Bank's Board of Directors for the same terms as such persons will serve as
directors on LSB's Board of Directors. Prior to the Effective Time, LSB Bank's
Board of Directors shall (subject to the Articles of Incorporation and Bylaws of
LSB Bank) appoint Nicholas A. Daves to the office of Senior Vice President of
LSB Bank, Charles V. Darnell to the office of Senior Vice President of LSB Bank,
Suzanne J. Bullotta to the office of Senior Vice President of LSB Bank, and all
other officers of ONSB to offices at LSB Bank that carries titles equivalent to
the titles held by such officers at ONSB (except for the corporate secretary of
ONSB that shall be appointed as an assistant corporate secretary of LSB Bank),
provided such appointments shall be contingent and become effective upon the
Closing of the Merger.

                  7.7 ONSB'S DISPOSITION OF FEDERAL RESERVE BANK STOCK. Prior to
the Effective Time, ONSB shall, and shall cause each of its Subsidiaries to,
take all necessary steps to sell or cause the cancellation of any and all shares
of Federal Reserve Bank stock owned by ONSB and its Subsidiaries.


                                    ARTICLE 8
                              ADDITIONAL AGREEMENTS

                  8.1 REGISTRATION STATEMENT; ONSB PROXY STATEMENT; SHAREHOLDER
APPROVAL. As soon as reasonably practicable after execution of this Agreement,
LSB shall file the Registration Statement with the SEC, provided ONSB has
provided, on a reasonably timely basis, all information concerning ONSB and its
Subsidiaries necessary for inclusion in the Registration Statement, and shall
use its commercially reasonable best efforts to cause the Registration Statement
to become effective under the 1933 Act as soon as reasonably practical after the
filing thereof and take any action required to be taken under the applicable
state Blue Sky or securities Laws in connection with the issuance of the shares
of LSB Common Stock upon consummation of the Merger. ONSB shall promptly furnish
all


                                      A-40
<PAGE>   141



information concerning it and the holders of its capital stock as LSB may
reasonably request in connection with such action. ONSB shall call a
Shareholders' Meeting, to be held as soon as reasonably practicable after the
Registration Statement is declared effective by the SEC, for the purpose of
voting upon approval of (i) this Agreement and the Plan of Merger, and (ii) such
other related matters as it deems appropriate. In connection with the
Shareholders' Meetings, (A) ONSB shall, if required, file the ONSB Proxy
Statement (which shall be included in the Registration Statement) with the FRB
and mail such ONSB Proxy Statement to its shareholders, (B) the Parties shall
furnish to each other all information concerning them that they may reasonably
request in connection with such ONSB Proxy Statement, (C) the Board of Directors
of ONSB shall recommend (subject to compliance with their fiduciary duties as
advised in writing by counsel to such Board) to its shareholders the approval of
this Agreement and the Plan of Merger, and (D) the Board of Directors and
officers of ONSB shall (subject to compliance with their fiduciary duties as
advised in writing by counsel to such Board) use their commercially reasonable
best efforts to obtain such shareholders' approval.

                  8.2 NASDAQ/NMS LISTING. LSB shall, prior to the Effective
Time, (i) file with the NASD a notification for the listing on the Nasdaq/NMS
relating to the proposed issuance of the shares of LSB Common Stock to be issued
to the holders of ONSB Common Stock pursuant to the Merger, and (ii) take all
other steps reasonably necessary to cause such shares to become listed on the
Nasdaq/NMS at the Effective Time.

                  8.3 APPLICATIONS. As soon as reasonably practical after
execution of this Agreement, LSB shall prepare and file, and ONSB shall
cooperate in the preparation and, where appropriate, filing of, applications
with all Regulatory Authorities having jurisdiction over the transactions
contemplated by this Agreement seeking the requisite Consents necessary to
consummate the transactions contemplated by this Agreement. The Parties shall
use their commercially reasonable best efforts to obtain the requisite Consents
of all Regulatory Authorities as soon as reasonably practical after the filing
of the appropriate applications.

                  8.4 AGREEMENT AS TO EFFORTS TO CONSUMMATE. Subject to the
terms and conditions of this Agreement, each Party agrees to use, and to cause
its Subsidiaries to use, its commercially reasonable best efforts to take, or
cause to be taken, all actions, and to do, or cause to be done, all things
necessary, proper, or advisable under applicable Laws to consummate and make
effective, as soon as practicable after the date of this Agreement, the
transactions contemplated by this Agreement, including, which limitation, using
its commercially reasonable best efforts to lift or rescind any Order adversely
affecting its ability to consummate the transactions contemplated herein and to
cause to be satisfied the conditions applicable to such Party referred to in
Article 9 hereof; provided, that nothing herein shall preclude either Party from
exercising its rights under this Agreement or the Option Agreement. Each Party
shall use, and shall cause each of its Subsidiaries to use, its


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commercially reasonable best efforts to obtain all Consents necessary or
desirable for the consummation of the transactions contemplated by this
Agreement.

                  8.5 INVESTIGATION AND CONFIDENTIALITY.

                  (a) Prior to the Effective Time, each Party shall keep the
         other Party advised of all material developments relevant to its
         business and to consummation of the Merger and shall permit the other
         Party and its Representatives to make or cause to be made such
         investigation of the business, books, records, contracts, employees,
         and properties of it and its Subsidiaries during normal business hours
         and of their respective financial and legal conditions as the other
         Party reasonably requests, provided that such investigation shall be
         reasonably related to the transactions contemplated hereby and shall
         not interfere unreasonably with normal operations. No investigation by
         a Party shall affect the representations and warranties of the other
         Party.

                  (b) Each Party shall, and shall cause its advisers and agents
         to, maintain the confidentiality of all confidential information
         furnished to it by the other Party concerning its and its Subsidiaries'
         businesses, operations, and financial positions and shall not use such
         information for any purpose except in furtherance of the transactions
         contemplated by this Agreement. If this Agreement is terminated prior
         to the Effective Time, each Party shall promptly return or certify the
         destruction of all documents, electronic files and copies thereof, and
         all work papers containing confidential information received from other
         Party.

                  (c) ONSB shall use its commercially reasonable best efforts to
         exercise its rights under confidentiality agreements entered into with
         Persons which were considering an acquisition transaction with ONSB to
         preserve the confidentiality of the information relating to ONSB
         provided to such parties.

                  8.6 PRESS RELEASES. Prior to the Effective Time, ONSB and LSB
shall consult with each other as to the form and substance of any press release
or other public disclosure materially related to this Agreement or any other
transaction contemplated hereby; provided, however, that nothing in this Section
8.6 shall be deemed to prohibit any Party from making any disclosure which its
counsel deems necessary or advisable in order to satisfy such Party's disclosure
obligations imposed by Law.

                  8.7 NO-SHOP COVENANT. Except with respect to this Agreement
and the transactions contemplated hereby, no ONSB Company nor any Affiliate
thereof nor any Representatives thereof retained by any ONSB Company shall
directly or indirectly solicit any Acquisition Proposal by any Person. Except to
the extent necessary to comply with the fiduciary duties of ONSB's Board of
Directors as advised in writing by counsel to such Board of Directors, no ONSB
Company or any Affiliate or Representative thereof shall


                                      A-42
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furnish any non-public information that it is not legally obligated to furnish,
negotiate with respect to, or enter into any Contract with respect to, any
Acquisition Proposal, but ONSB may communicate information about such an
Acquisition Proposal to its shareholders if and to the extent that it is
required to do so in order to comply with its legal obligations as advised in
writing by counsel. ONSB shall promptly notify LSB orally and in writing in the
event that it receives any inquiry or proposal relating to any such transaction.
ONSB shall (i) immediately cease and cause to be terminated as of the date of
this Agreement any existing activities, discussions or negotiations with any
Persons conducted heretofore with respect to any of the foregoing, and (ii)
direct and use its commercially reasonable best efforts to cause all of its
Representatives not to engage in any of the foregoing. The Parties agree that
nothing in this Section 8.7 shall affect ONSB's no-shop obligations and LSB's
right of first refusal and right to a break-up fee set forth in Section 8 of the
Letter of Intent.

                  8.8 ACCOUNTING AND TAX TREATMENT. Each of the Parties
undertakes and agrees to use its commercially reasonable best efforts to cause
the Merger, and to take no action which would cause the Merger not, to qualify
for "pooling-of-interests" accounting treatment consistent with GAAP and the
rules and regulations of the SEC and treatment as a "reorganization" within the
meaning of Section 368(a) of the Internal Revenue Code for federal income tax
purposes.

                  8.9 STATE TAKEOVER LAWS. No ONSB Company shall take any steps
to make the transactions contemplated by this Agreement subject to any Takeover
Law, including Articles 9 and 9A of the NCBCA.

                  8.10 CHARTER PROVISIONS. Each ONSB Company shall take all
necessary action to ensure that the entering into of this Agreement, the Option
Agreement, the Confidentiality Agreement and the Plan of Merger, and the
consummation of the Merger and the other transactions contemplated hereby and
thereby do not and will not result in the grant of any rights to any Person
under the Articles of Incorporation, Bylaws or other governing instruments of
any ONSB Company or restrict or impair the ability of LSB or any of its
Subsidiaries to vote, or otherwise exercise the rights of a shareholder with
respect to, shares of any ONSB Company that may be directly or indirectly
acquired or controlled by LSB.

                  8.11 AGREEMENT OF AFFILIATES. ONSB has disclosed in Section
8.11 of the ONSB Disclosure Memorandum each Person whom it reasonably believes
to be an "affiliate" of ONSB for purposes of Rule 145 under the 1933 Act. ONSB
shall use its commercially reasonable best efforts to cause each such Person to
execute and deliver to LSB not later than thirty (30) days prior to the
Effective Time, an Affiliate Agreement in substantially the form of Exhibit 2
(an "Affiliate Agreement"), providing that such Person will not sell, pledge,
transfer, or otherwise dispose of the shares of ONSB Common Stock held by such
Person, except as contemplated by such Affiliate Agreement or by this Agreement,
and will not sell, pledge, transfer, or otherwise dispose of the shares of LSB
Common Stock to be received by such Person upon consummation of the Merger,
except in compliance with applicable


                                      A-43
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provisions of the 1933 Act and the rules and regulations thereunder and until
such time as financial results covering at least thirty (30) days of combined
operations of LSB and ONSB have been published within the meaning of Section
201.01 of the SEC's Codification of Financial Reporting Policies. In order that
the Merger will qualify for "pooling-of-interests" accounting treatment
consistent with GAAP and the rules and regulations of the SEC, shares of LSB
Common Stock issued to such affiliates of ONSB in exchange for shares of ONSB
Common Stock shall not be transferable until such time as financial results
covering at least thirty (30) days of combined operations of LSB and ONSB have
been published within the meaning of Section 201.01 of the SEC's Codification of
Financial Reporting Policies, regardless of whether each such affiliate has
provided the Affiliate Agreement referred to in this Section 8.11 (and LSB shall
be entitled to place restrictive legends upon certificates for shares of LSB
Common Stock issued to affiliates of ONSB pursuant to this Agreement to enforce
the provisions of this Section 8.11). LSB shall not be required to maintain the
effectiveness of the Registration Statement under the 1933 Act for the purposes
of resale of LSB Common Stock by such affiliates.

                  8.12     EMPLOYEE BENEFITS AND CONTRACTS.

                  (a) Following the Effective Time, LSB shall provide generally
         to officers and employees of the ONSB Companies who at or after the
         Effective Time become employees of a LSB Company (other than Mr. Daves,
         Mr. Marziano and Mr. Darnell who shall have rights to employee benefits
         as provided under their existing agreements), employee benefits under
         employee benefit plans (other than stock option or other plans
         involving the potential issuance of LSB Common Stock, except as set
         forth in this Section 8.12), on terms and conditions substantially
         similar to those currently provided by the LSB Companies to their
         similarly situated officers and employees. For purposes of
         participation and vesting (but not accrual of benefits) under such
         employee benefit plans, (i) service under any qualified defined benefit
         plans of ONSB shall be treated as service under LSB's qualified defined
         benefit plans, (ii) service under any qualified defined contribution
         plans of ONSB shall be treated as service under LSB's qualified defined
         contribution plans, and (iii) service under any other employee benefit
         plans of ONSB shall be treated as service under any similar employee
         benefit plans maintained by LSB. LSB shall cause its, and its
         Subsidiaries', employee benefit plans to waive any pre-existing
         condition limitations covered under the applicable employee benefit
         plans of the ONSB Companies for any employees of the ONSB Companies who
         become or remain employees of any LSB Company. LSB also shall, and
         shall cause its Subsidiaries to, honor all employment, consulting and
         other compensation Contracts disclosed in Section 8.12 of the ONSB
         Disclosure Memorandum between any ONSB Company and any current or
         former director, officer, or employee thereof and all provisions for
         vested benefits or other vested amounts earned or accrued through the
         Effective Time under the ONSB Benefit Plans disclosed in Section 8.12
         of the ONSB Disclosure Memorandum.



                                      A-44
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                  (b) Each person employed by an ONSB Company on a full-time
         basis at the Effective Time (other than Mr. Daves, Mr. Marziano and Mr.
         Darnell) who, following the Merger and at LSB's sole discretion, is
         terminated by an LSB Company for reasons other than Cause (as defined
         below) within six (6) months following the Effective Time shall be
         entitled to a severance payment by LSB Bank in an amount equal to one
         (1) week's salary or wages for each full year of prior continuous
         service with an ONSB Company, provided that any severance payment shall
         consist of a minimum of two (2) weeks' salary or wages. For purposes of
         this Section, the term "Cause" shall mean (i) failure or refusal of
         employee to comply with duties and responsibilities substantially
         similar to those assigned to the employee immediately prior to the
         Merger, (ii) employee being charged by any duly constituted law
         enforcement agency or authority with a crime involving moral turpitude,
         theft, embezzlement, or fraud, or (iii) employee's excessive use or
         abuse of drugs, alcohol or other toxic substances. To the extent any
         ONSB Company maintains any plan or arrangement for the payment of
         severance or salary continuation benefits to employees, such plan or
         arrangement (except as provided in this Section 8.12(c)) shall be
         terminated at the Effective Time and be of no force and effect
         thereafter.

                  8.13 TAX FREE REORGANIZATION. The Parties agree to use their
commercially reasonable best efforts to obtain a written opinion of Bell, Davis
& Pitt, P.A., in form reasonably satisfactory to such Parties (the "Tax
Opinion"), to the effect that (i) the Merger will constitute a "reorganization"
within the meaning of Section 368(a) of the Internal Revenue Code, (ii) the
exchange in the Merger of ONSB Common Stock for LSB Common Stock will not give
rise to gain or loss to the shareholders of ONSB with respect to such exchange
(except that a shareholder who receives cash hereunder (as a result of the
exercise of dissenters' rights or in lieu of fractional shares) will recognize a
taxable gain up to the extent of any cash received, but will not recognize any
taxable loss), and (iii) each of ONSB, LSB, and LSB Bank will be a party to that
"reorganization" within the meaning of Section 368(b) of the Internal Revenue
Code and none of such parties will recognize gain or loss as a consequence of
the Merger. In rendering such Tax Opinion, counsel shall be entitled to rely
upon representations of officers of ONSB, LSB and LSB Bank reasonably
satisfactory in form and substance to such counsel.

                  8.14 D&O INSURANCE.

                  (a) LSB shall use its commercially reasonable best efforts
         (and ONSB shall cooperate prior to the Effective Time in these efforts)
         to maintain in effect for a period of three (3) years after the
         Effective Time ONSB's existing directors' and officers' liability
         insurance policy (provided that LSB may substitute therefor (i)
         policies of at least the same coverage and amounts containing terms and
         conditions which are substantially no less advantageous or (ii) with
         the consent of ONSB given prior to the Effective Time, any other
         policy) with respect to claims arising from facts or events which
         occurred prior to the Effective Time and covering persons who are


                                      A-45
<PAGE>   146


         currently covered by such insurance; provided, that LSB shall not be
         obligated to make aggregate premium payments for such three-year period
         in respect of such policy (or coverage replacing such policy) which
         exceed, for the portion related to ONSB's directors and officers, 250%
         of the annual premium payments on ONSB's current policy in effect as of
         the date of this Agreement (the "Maximum Amount"). If the amount of the
         premiums necessary to maintain or procure such insurance coverage
         exceeds the Maximum Amount, LSB shall use its commercially reasonable
         best efforts to maintain the most advantageous policies of directors'
         and officers' liability insurance obtainable for a premium equal to the
         Maximum Amount.

                  (b) If the Surviving Bank or any of its successors or assigns
         shall consolidate with or merge into any other Person and shall not be
         the continuing or surviving Person of such consolidation or merger or
         shall transfer all or substantially all of its assets to any Person,
         then and in each case, proper provision shall be made so that the
         successors and assigns of the Surviving Bank shall assume the
         obligations set forth in this Section 8.14.


                                    ARTICLE 9
                CONDITIONS PRECEDENT TO OBLIGATIONS TO CONSUMMATE

                  9.1 CONDITIONS TO OBLIGATIONS OF EACH PARTY. The respective
obligations of each Party to perform this Agreement and consummate the Merger
and the other transactions contemplated hereby are subject to the satisfaction
of the following conditions, unless waived by both Parties pursuant to Section
11.6 hereof:

                  (a) Shareholder Approval. The shareholders of ONSB and LSB
         shall have approved this Agreement and the Plan of Merger and the
         consummation of the transactions contemplated hereby and thereby,
         including the Merger, as and to the extent required by Law or by the
         provisions of any governing instruments.

                  (b) Regulatory Approvals. All Consents of, filings and
         registrations with, and notifications to, all Regulatory Authorities
         required for consummation of the Merger shall have been obtained or
         made and shall be in full force and effect and all waiting periods
         required by Law, including the HSR Act, shall have expired. No Consent
         obtained from any Regulatory Authority which is necessary to consummate
         the transactions contemplated hereby shall be conditioned or restricted
         in a manner (including requirements relating to the raising of
         additional capital or the disposition of Assets) which in the
         reasonable good faith judgment of the Board of Directors of either
         Party would so materially adversely impact the economic or business
         assumptions of the transactions contemplated by this Agreement that,
         had such condition or requirement been known, such Party would not, in
         its reasonable good faith judgment have entered into this Agreement.


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                  (c) Consents and Approvals. Each Party shall have obtained any
         and all Consents required for consummation of the Merger (other than
         those referred to in Section 9.1(b) hereof) or for the preventing of
         any Default under any Contract or Permit of such Party which, if not
         obtained or made, is reasonably likely to have, individually or in the
         aggregate, a Material Adverse Effect on such Party.

                  (d) Legal Proceeding. No court or governmental or regulatory
         authority of competent jurisdiction shall have enacted, issued,
         promulgated, enforced or entered any Law or Order (whether temporary,
         preliminary or permanent) or taken any other action which prohibits,
         restricts or makes illegal consummation of the transactions
         contemplated by this Agreement.

                  (e) Registration Statement. The Registration Statement shall
         be effective under the 1933 Act, no stop orders suspending the
         effectiveness of the Registration Statement shall have been issued, no
         action, suit, proceeding or investigation by the SEC to suspend the
         effectiveness thereof shall have been initiated and be continuing, and
         all necessary approvals under state securities Laws or the 1933 Act or
         1934 Act relating to the issuance or trading of the shares of LSB
         Common Stock issuable pursuant to the Merger shall have been received.

                  (f) Nasdaq/NMS Listing. The shares of LSB Common Stock
         issuable pursuant to the Merger shall have been approved for listing on
         the Nasdaq/NMS.

                  (g) Pooling Letters. Each of the Parties shall have received a
         letter, dated as of the Effective Time, in form and substance
         reasonably acceptable to such Party, from Arthur Anderson LLP to the
         effect that the Merger will qualify for "pooling-of-interests"
         accounting treatment under Accounting Principles Board Opinion No. 16
         and consistent with the rules and regulations of the SEC if closed and
         consummated in accordance with this Agreement. Each of the Parties also
         shall have received a letter, dated as of the Effective Time, and in
         form and substance reasonably acceptable to such Party, from Larrowe,
         Cardwell & Company, LC to the effect that such firm is not aware of any
         matters relating to ONSB and its Subsidiaries which would preclude the
         Merger from qualifying for "pooling-of-interests" accounting treatment
         under Accounting Principles Board Opinion No. 16 and consistent with
         the rules and regulations of the SEC.

                  (h) Tax Matters. Each Party shall have received a copy of the
         Tax Opinion referred to in Section 8.13 hereof. In addition, each Party
         shall have delivered to the other Parties a Certificate, dated as of
         the date of the Tax Opinion, signed by its duly authorized officers, to
         the effect that, to the best knowledge and belief of such officers, the
         statement of facts and representations made on behalf of the management
         of such Party, presented to the legal counsel delivering the Tax
         Opinion, were at the date of such presentation, true, correct, and
         complete, and are


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<PAGE>   148



         on the date of such Certificate, to the extent contemplated by the
         presentation, true, correct, and complete, as though such presentation
         had been made on the date of such Certificate.

                  (i) Plan of Merger; Articles of Merger. Each Party shall have
         received from LSB Bank and ONSB the executed Plan of Merger and the
         executed Articles of Merger.

                  9.2 CONDITIONS TO OBLIGATIONS OF LSB. The obligations of LSB
to perform this Agreement and consummate the Merger and the other transactions
contemplated hereby are subject to the satisfaction of the following conditions,
unless waived by LSB pursuant to Section 11.6(a) hereof:

                  (a) Representations and Warranties. For purposes of this
         Section 9.2(a), the accuracy of the representations and warranties of
         ONSB set forth in this Agreement shall be assessed as of the date of
         this Agreement and as of the Effective Time with the same effect as
         though all such representations and warranties had been made on and as
         of the Effective Time (provided that representations and warranties
         which are confined to a specified date shall speak only as of such
         date). The representations and warranties of ONSB set forth in Sections
         5.3 and 5.7 hereof shall be true and correct (except for inaccuracies
         which are de minimus in amount). The representations and warranties of
         ONSB set forth in Sections 5.17, 5.18, and 5.19 hereof shall be true
         and correct in all material respects. There shall not exist
         inaccuracies in the representations and warranties of ONSB set forth in
         this Agreement (including the representations and warranties set forth
         in Sections 5.3, 5.7, 5.17, 5.18, and 5.19) such that the aggregate
         effect of such inaccuracies has, or is reasonably likely to have, a
         Material Adverse Effect on ONSB; provided that, for purposes of this
         sentence only, those representations and warranties which are qualified
         by references to "material" or "Material Adverse Effect" shall be
         deemed not to include such qualifications.

                  (b) Performance of Agreements and Covenants. Each and all of
         the agreements and covenants of ONSB to be performed and complied with
         pursuant to this Agreement and the other agreements contemplated hereby
         prior to the Effective Time shall have been duly performed and complied
         with in all material respects.

                  (c) Certificates. ONSB shall have delivered to LSB (i) a
         certificate, dated as of the Effective Time and signed on its behalf by
         its Chairman of the Board and its President and Chief Executive
         Officer, to the effect that the conditions of its obligations set forth
         in Section 9.2(a) and 9.2(b) hereof have been satisfied, and (ii)
         certified copies of resolutions duly adopted by ONSB's Board of
         Directors and shareholders evidencing the taking of all corporate
         action necessary to authorize the execution, delivery and performance
         of this Agreement, the Option Agreement and


                                      A-48
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         the Plan of Merger, and the consummation of the transactions
         contemplated hereby and thereby, all in such reasonable detail as LSB
         and its counsel shall request.

                  (d) Opinion of Counsel. LSB shall have received a written
         opinion of Bell, Davis & Pitt, P.A., counsel to ONSB, dated as of the
         Effective Time, in form reasonably satisfactory to LSB and its counsel,
         as to the matters set forth in Exhibit 4.

                  (e) Fairness Opinion. LSB shall have received from The Carson
         Medlin Company a letter, dated not more than five (5) business days
         prior to the date of the LSB Proxy Statement, to the effect that, in
         the opinion of such firm, the terms of the Merger are fair, from a
         financial point of view, to the holders of LSB Common Stock.

                  (f) Accountant's Letters. LSB shall have received from
         Larrowe, Cardwell & Company, LC letters dated not more than five (5)
         days prior to (i) the date of the ONSB Proxy Statement, (ii) the date
         of the LSB Proxy Statement, and (iii) the Effective Time, with respect
         to certain financial information regarding ONSB, in form and substance
         reasonably satisfactory to LSB, which letters shall be based upon
         customary specified procedures undertaken by such firm in accordance
         with Statement of Auditing Standard No. 72.

                  (g) Affiliate Agreements. LSB shall have received from each
         affiliate of ONSB an executed Affiliate Agreement referred to in
         Section 8.11 hereof, to the extent necessary to assure in the
         reasonable judgment of LSB that the transactions contemplated hereby
         will qualify for "pooling-of-interests" accounting treatment consistent
         with GAAP and the rules and regulations of the SEC.

                  (h) Support Agreement. LSB Bank shall have received from at
         least a majority of the directors of ONSB and the President and Chief
         Executive Officer and the Chairman of the Board of ONSB executed
         Support Agreements referred to in the Preamble of this Agreement.

                  (i) Address Existing Dispute. ONSB shall have addressed the
         dispute referred to in Section 5.14 of the ONSB Disclosure Memorandum
         in a manner (including, without limitation, on terms and conditions, if
         resolved) reasonably satisfactory to LSB.

                  9.3 CONDITIONS TO OBLIGATIONS OF ONSB. The obligations of ONSB
to perform this Agreement and consummate the Merger and the other transactions
contemplated hereby are subject to the satisfaction or the following conditions,
unless waived by ONSB pursuant to Section 11.6(b) hereof:



                                      A-49
<PAGE>   150


                  (a) Representations and Warranties. For purposes of this
         Section 9.3(a), the accuracy of the representations and warranties of
         LSB set forth in this Agreement shall be assessed as of the date of
         this Agreement and as of the Effective Time with the same effect as
         though all such representations and warranties had been made on and as
         of the Effective Time (provided that representations and warranties
         which are confined to a specified date shall speak only as of such
         date). The representations and warranties of LSB set forth in Section
         6.3 hereof shall be true and correct (except for inaccuracies which are
         de minimus in amount). The representations and warranties of LSB set
         forth in Section 6.11 hereof shall be true and correct in all material
         respects. There shall not exist inaccuracies in the representations and
         warranties of LSB set forth in this Agreement (including the
         representations and warranties set forth in Sections 6.3 and 6.11) such
         that the aggregate effect of such inaccuracies has, or is reasonably
         likely to have, a Material Adverse Effect on LSB; provided that, for
         purposes of this sentence only, those representations and warranties
         which are qualified by references to "material" or "Material Adverse
         Effect" shall be deemed not to include such qualifications.

                  (b) Performance of Agreements and Covenants. Each and all of
         the agreements and covenants of LSB to be performed and complied with
         pursuant to this Agreement and the other agreements contemplated hereby
         prior to the Effective Time shall have been duly performed and complied
         with in all material respects.

                  (c) Certificates. LSB shall have delivered to ONSB (i) a
         certificate, dated as of the Effective Time and signed on its behalf by
         its Chairman of the Board, President and Chief Executive Officer, to
         the effect that the conditions of its obligations set forth in Section
         9.3(a) and 9.3(b) hereof have been satisfied, and (ii) certified copies
         of resolutions duly adopted by LSB's Board of Directors and the
         shareholders evidencing the taking of all corporate action necessary to
         authorize the execution, delivery and performance of this Agreement and
         the Option Agreement, and the consummation of the transactions
         contemplated hereby and thereby, all in such reasonable detail as ONSB
         and its counsel shall request.

                  (d) Opinion of Counsel. ONSB shall have received a written
         opinion of Hunton & Williams, counsel to LSB and LSB Bank, dated as of
         the Effective Time, in form reasonably satisfactory to ONSB and its
         counsel, as to the matters set forth in Exhibit 5.

                  (e) Fairness Opinion. ONSB shall have received from Scott &
         Stringfellow, Inc. a letter, dated not more than five (5) business days
         prior to the date of the ONSB Proxy Statement, to the effect that, in
         the opinion of such firm, the terms of the Merger are fair, from a
         financial point of view, to the holders of ONSB Common Stock.



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                                   ARTICLE 10
                                   TERMINATION

                  10.1 TERMINATION. Notwithstanding any other provision of this
Agreement and the Plan of Merger, and notwithstanding the approval of this
Agreement by the shareholders of ONSB or LSB, this Agreement may be terminated
and the Merger abandoned at any time prior to the Effective Time:

                  (a) By mutual consent of the Board of Directors of LSB and the
         Board of Directors of ONSB; or

                  (b) By the Board of Directors of either Party (provided that
         the terminating Party is not then in breach of any representation or
         warranty contained in this Agreement under the applicable standard set
         forth in Section 9.2(a) hereof in the case of ONSB and Section 9.3(a)
         in the case of LSB or in material breach of any covenant or other
         agreement contained in this Agreement) in the event of an inaccuracy of
         any representation or warranty of the other Party contained in this
         Agreement which cannot be or has not been cured within thirty (30) days
         after receipt of written notice by the breaching Party of such
         inaccuracy and which inaccuracy would provide the terminating Party the
         ability to refuse to consummate the Merger under the applicable
         standard set forth in Section 9.2(a) hereof in the case of ONSB and
         Section 9.3(a) hereof in the case of LSB; or

                  (c) By the Board of Directors of either Party (provided that
         the terminating Party is not then in breach of any representation or
         warranty contained in this Agreement under the applicable standard set
         forth in Section 9.2(a) hereof in the case of ONSB and Section 9.3(a)
         in the case of LSB or in material breach of any covenant or other
         agreement contained in this Agreement) in the event of a material
         breach by the other Party of any covenant or agreement contained in
         this Agreement which cannot be or has not been cured within thirty (30)
         days after the receipt of written notice by the breaching Party of such
         breach; or

                  (d) By the Board of Directors of either Party in the event (i)
         any Consent of any Regulatory Authority required for consummation of
         the Merger and the other transactions contemplated hereby shall have
         been denied by final nonappealable action of such authority or if any
         action taken by such authority is not appealed within the time limit
         for appeal, or (ii) the shareholders of ONSB or LSB fail to vote their
         approval of this Agreement and the Plan of Merger and the transactions
         contemplated hereby and thereby, as required by the Laws of the State
         of North Carolina at the shareholders' meeting where the transactions
         were presented to such shareholders for approval and voted upon; or



                                      A-51
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                  (e) By the Board of Directors of either Party in the event
         that the Merger shall not have been consummated by September 30, 1997,
         if the failure to consummate the transactions contemplated hereby on or
         before such date is not caused by any breach of this Agreement by the
         Party electing to terminate pursuant to this Section 10.1(e); or

                  (f) By the Board of Directors of either Party (provided that
         the terminating Party is not then in breach of any representation or
         warranty contained in this Agreement under the applicable standard set
         forth in Section 9.2(a) hereof in the case of ONSB and Section 9.3(a)
         in the case of LSB or in material breach of any covenant or other
         agreement contained in this Agreement) in the event that any of the
         conditions precedent to the obligations of such Party to consummate the
         Merger (other than as contemplated by Section 10.1(d) hereof) cannot be
         satisfied or fulfilled by the date specified in Section 10.1(e) hereof;
         or

                  (g) By the Board of Directors of LSB, in the event that the
         Board of Directors of ONSB shall have affirmed, recommended or
         authorized entering into any Acquisition Proposal in conflict with this
         Agreement or other transaction involving a merger, share exchange,
         consolidation or transfer of substantially all of the Assets of ONSB;
         or

                  (h) By the Board of Directors of LSB, at any time prior to the
         90th day after the date of this Agreement, in the event that the review
         of the Assets, business, financial condition, results of operations,
         and prospects of ONSB undertaken by LSB and its Representatives during
         such time period or any of the disclosures contained in the ONSB
         Disclosure Memorandum causes the Board of Directors of LSB to
         determine, in its reasonable good faith judgment, that a fact or
         circumstance exists or is likely to exist or result which materially
         and adversely impacts the economic benefits taken as whole to LSB of
         the transactions contemplated by this Agreement so as to render
         inadvisable the consummation of the Merger; or

                  (i) By the Board of Directors of either Party in the event the
         Average LSB Closing Price is either below $15.00 or above $24.00,
         provided that such termination must occur during the 7-day period
         commencing after the Pricing Period by the terminating Party giving
         written notice of termination to the other Party.

                  10.2 EFFECT OF TERMINATION. In the event of the termination of
this Agreement and abandonment of the Merger pursuant to Section 10.1 hereof,
this Agreement shall become void and have no effect, except that (i) the
provisions of this Section 10.2 and Article 11 and Section 8.5(b) hereof shall
survive any such termination and abandonment, and (ii) a termination pursuant to
Sections 10.1(b), 10.1(c), 10.1(f) or 10.1(g) hereof shall not relieve the
breaching Party from liability for an uncured willful breach of a
representation, warranty, covenant, or agreement giving rise to such
termination. The


                                      A-52
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Parties agree that a termination of the Agreement under this Article 10 shall
have no effect upon their rights and obligations under the Option Agreement and
the Letter of Intent except as otherwise provided therein.

                  10.3 NON-SURVIVAL OF REPRESENTATIONS AND COVENANTS. The
respective representations, warranties, obligations, covenants, and agreements
of the Parties shall not survive the Effective Time except this Section 10.3 and
Articles 2, 3, 4 and 11 and Sections 7.6, 8.11, 8.12 and 8.14 hereof.


                                   ARTICLE 11
                                  MISCELLANEOUS

                  11.1 DEFINITIONS.

                  (a) Except as otherwise provided herein, the capitalized terms
         set forth below shall have the following meanings:

                  "ACQUISITION PROPOSAL" with respect to a Party shall mean any
         tender offer or exchange offer or any proposal for a merger,
         acquisition of all of the stock or assets of, or other business
         combination involving such Party or any of its Subsidiaries or the
         acquisition of a substantial equity interest in, or a substantial
         portion of the assets of, such Party or any of its Subsidiaries.

                  "AFFILIATE" of a Person shall mean: (i) any other Person
         directly, or indirectly through one or more intermediaries,
         controlling, controlled by or under common control with such Person;
         (ii) any officer, director, partner, employer, or direct or indirect
         beneficial owner of any ten percent (10%) or greater equity or voting
         interest of such Person; or (iii) any other Person for which a Person
         described in clause (ii) acts in any such capacity.

                  "AGREEMENT" shall mean this Agreement and Plan of
         Reorganization and Merger, including the Exhibits, the LSB Disclosure
         Memorandum and the ONSB Disclosure Memorandum delivered pursuant hereto
         and incorporated herein by reference.

                  "ARTICLES OF MERGER" shall mean the Articles of Merger (which
         shall contain the Plan of Merger) to be executed by LSB Bank and filed
         with the Secretary of State of the State of North Carolina relating to
         the Merger as contemplated by Section 1.1 hereof.

                  "ASSETS" of a Person shall mean all of the assets, properties,
         businesses and rights of such Person of every kind, nature, character
         and description, whether real,


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         personal or mixed, tangible or intangible, accrued or contingent, or
         otherwise relating to or utilized in such Person's business, directly
         or indirectly, in whole or in part, whether or not carried on the books
         and records of such Person, and whether or not owned in the name of
         such Person or any Affiliate of such Person and wherever located.

                  "AVERAGE LSB CLOSING PRICE" shall mean the simple average of
         the last sale prices for LSB Common Stock on the Nasdaq/NMS (as
         reported by The Wall Street Journal or, if not reported thereby, any
         other authoritative source selected by LSB) on the trading days during
         the Pricing Period.

                  "BHC ACT" shall mean the federal Bank Holding Company Act of
         1956, as amended.

                  "CLOSING DATE" shall mean the date on which the Closing 
         occurs.

                  "CONFIDENTIALITY AGREEMENT" shall mean that certain
         Confidentiality Agreement dated as of January 20, 1997 between LSB and
         ONSB.

                  "CONSENT" shall mean any consent, approval, authorization,
         clearance, exemption, waiver, or similar affirmation by any Person
         pursuant to any Contract, Law, Order, or Permit.

                  "CONTRACT" shall mean any written or oral agreement,
         arrangement, authorization, commitment, contract, indenture,
         instrument, lease, obligation, plan, practice, restriction,
         understanding, or undertaking of any kind or character, or other
         document to which any Person is a party or that is binding on any
         Person or its capital stock, Assets or business.

                  "DEFAULT" shall mean (i) any breach or violation of or default
         under any Contract, Order or Permit, (ii) any occurrence of any event
         that with the passage of time or the giving of notice or both would
         constitute a breach or violation of or default under any Contract,
         Order or Permit, or (iii) any occurrence of any event that with or
         without the passage of time or the giving of notice would give rise to
         a right to terminate or revoke, change the current terms of, or
         renegotiate, or to accelerate, increase, or impose any Liability under,
         any Contract, Order or Permit.

                  "ENVIRONMENTAL LAWS" shall mean all Laws relating to pollution
         or protection of human health or the environment (including ambient
         air, surface water, ground water, land surface or subsurface strata)
         and which are administered, interpreted or enforced by the United
         States Environmental Protection Agency or state or local agencies with
         jurisdiction over, and including common law in respect of, pollution or
         protection of human health or the environment, including the
         Comprehensive


                                      A-54
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         Environmental Response Compensation and Liability Act, as amended, 42
         U.S.C. 9601 et seq., the Resource Conservation and Recovery Act, as
         amended, 4213.S.C. 6901 et seq., and other Laws relating to emissions,
         discharges, releases or threatened releases of any Hazardous Material,
         or otherwise relating to the manufacture, processing, distribution,
         use, treatment, storage, disposal, transport or handling of any
         Hazardous Material.

                  "ERISA" shall mean the Employee Retirement Income Security Act
         of 1974, as amended.

                  "EXHIBITS" 1 through 5, inclusive, shall mean the Exhibits so
         marked, copies of which are attached to this Agreement. Such Exhibits
         are hereby incorporated by reference herein and made a part hereof, and
         may be referred to in this Agreement and any other related instrument
         or document without being attached hereto or thereto.

                  "FDIC" shall mean the Federal Deposit Insurance Corporation.

                  "FRB" shall mean the Board of Governors of the Federal Reserve
         System.

                  "FRB/FDIC DOCUMENTS" shall mean all forms, proxy statements,
         registration statements, reports, schedules, and other documents filed,
         or required to be filed, by a Party or any of its Subsidiaries with the
         FRB or the FDIC pursuant to applicable Laws.

                  "GAAP" shall mean generally accepted accounting principles,
         consistently applied during the periods involved.

                  "HAZARDOUS MATERIAL" shall mean (i) any hazardous substance,
         hazardous material, hazardous waste, regulated substance or toxic
         substance (as those terms are defined by any applicable Environmental
         Laws) and (ii) any chemicals, pollutants, contaminants, petroleum,
         petroleum products, or oil (and specifically shall include asbestos
         requirement abatement, removal or encapsulation pursuant to the
         requirements of governmental authorities and any polychlorinated
         biphenyls).

                  "HSR ACT" shall mean Section 7A of the Clayton Act, as added
         by Title II of the Hart-Scott-Rodino Antitrust Improvements Act of
         1976, as amended, and the rules and regulations promulgated thereunder.

                  "INTERNAL REVENUE CODE" shall mean the Internal Revenue Code
         of 1986, as amended, and the rules and regulations promulgated
         thereunder.



                                      A-55
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                  "KNOWLEDGE" as used with respect to a Person (including
         references to such Person being aware of a particular matter) shall
         mean the actual knowledge after due inquiry of the Chairman, President,
         Chief Executive Officer, Corporate Secretary, Chief Financial Officer,
         Chief Accounting Officer, Chief Credit Officer, General Counsel, any
         Assistant or Deputy General Counsel, or any Senior or Executive Vice
         President of such Person.

                  "LAW" shall mean any code, law, ordinance, regulation,
         reporting or licensing requirement, rule, or statute applicable to a
         Person or its Assets, Liabilities or business, including, without
         limitation, those promulgated, interpreted or enforced by any of the
         Regulatory Authorities.

                  "LETTER OF INTENT" shall mean that certain letter of intent
         dated January 20, 1997 between LSB and ONSB, as amended on February 12,
         1997, relating to the transactions herein.

                  "LIABILITY" shall mean any direct or indirect, primary or
         secondly, liability, indebtedness, obligation, penalty, cost or expense
         (including without limitation, costs of investigation, collection and
         defense), claim, deficiency, guaranty or endorsement of or by any
         Person (other than endorsements of notes, bills, checks and drafts
         presented for collection or deposit in the ordinary course of business)
         of any type, whether accrued, absolute or contingent, liquidated or
         unliquidated, matured or unmatured, or otherwise.

                  "LIEN" shall mean any conditional sale agreement, default of
         title, easement, encroachment, encumbrance, hypothecation,
         infringement, lien, mortgage, pledge, reservation, restriction,
         security interest, title retention, or other security arrangement, or
         any adverse right or interest, charge, or claim of any nature
         whatsoever of, on, or with respect to any property or property
         interest, other than (i) Liens for current property Taxes not yet due
         and payable, and (ii) for depository institution, pledges to secure
         deposits and other Liens incurred in the ordinary course of the banking
         business.

                  "LITIGATION" shall mean any action, arbitration, cause of
         action, complaint, criminal prosecution, demand letter, governmental or
         other investigation, hearing, inquiry, administrative or other
         proceeding, relating to or affecting a Party, its Subsidiaries, its or
         their business, its or their Assets (including Contracts related to it
         or them), or the transactions contemplated by this Agreement, but shall
         not include regular, periodic examinations of depository institutions
         and their Affiliates by Regulatory Authorities.

                  "LOAN PROPERTY" shall mean any property owned by the Party in
         question or by any of its Subsidiaries or in which such Party or
         Subsidiary holds a security


                                      A-56
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         interest or other lien (including an interest in a fiduciary capacity),
         and, where required by the context, includes the owner or operator of
         such property, but only with respect to such property.

                  "LSB BANK COMMON STOCK" shall mean the common stock, par value
         $5.00 per share, of LSB Bank.

                  "LSB COMMON STOCK" shall mean the common stock, par value
         $5.00 per share, of LSB.

                  "LSB COMPANIES" shall mean, collectively, LSB and all LSB
         Subsidiaries.

                  "LSB DISCLOSURE MEMORANDUM" shall mean the written information
         entitled "LSB Bancshares, Inc. Disclosure Memorandum" delivered to ONSB
         prior to ONSB's execution of this Agreement, describing in reasonable
         detail the matters contained therein and, with respect to each
         disclosure made therein, specifically referencing each Section of this
         Agreement under which such disclosure is being made. Information
         disclosed with respect to one Section shall not be deemed to be
         disclosed for purposes of any other Section not specifically referenced
         with respect thereto. Such LSB Disclosure Memorandum is hereby
         incorporated by reference herein and made a part hereof, and may be
         referred to in this Agreement and any other related instrument or
         document without being attached hereto or thereto.

                  "LSB FINANCIAL STATEMENTS" shall mean (i) the consolidated
         balance sheets (including related notes and schedules, if any) of LSB
         as of September 30, 1996, and as of December 31, 1995 and 1994, and the
         related statements of income, changes in shareholders' equity, and cash
         flows (including related notes and schedules, if any), for the nine
         months ended September 30, 1996, and for each of the three fiscal years
         ended December 31, 1995, 1994 and 1993, as filed by LSB in SEC
         Documents, and (ii) the consolidated balance sheets of LSB (including
         related notes and schedules, if any) and related statements of income,
         changes in shareholders' equity, and cash flows (including related
         notes and schedules, if any) included in SEC Documents filed with
         respect to periods ended subsequent to September 30, 1996.

                  "LSB PROXY STATEMENT" shall mean the proxy statement used by
         LSB to solicit the approval of its shareholders of the transactions
         contemplated by this Agreement.

                  "LSB STOCK PLANS" shall mean the existing stock option plans
         of LSB designated as follows: (i) 1986 Employee Incentive Stock Option
         Plan, (ii) 1994 Directors' Stock Option Plan, and (iii) 1996 Omnibus
         Stock Incentive Plan.



                                      A-57
<PAGE>   158


                  "LSB SUBSIDIARIES" shall mean the Subsidiaries of LSB,
         including, without limitation, LSB Bank, Peoples Finance Company of
         Lexington, Inc., LSB Financial Services, Inc., and LSB Properties, Inc.

                  "MATERIAL" for purposes of this Agreement shall be determined
         in light of the facts and circumstances of the matter in question;
         provided that any specific monetary amount stated in this Agreement
         shall determine materiality in that instance.

                  "MATERIAL ADVERSE EFFECT" on a Party shall mean an event,
         condition, occurrence, change in facts, conditions or circumstances
         which, individually or in the aggregate, the other Party shall
         reasonable determine could have an adverse effect resulting in: (i)
         liability, loss, damage or injury and all reasonable costs and expenses
         (including reasonable counsel fees and costs of any suit related
         thereto) on the financial position, business, or results of operations
         of such Party and its Subsidiaries, taken as a whole, exceeding five
         (5%) percent of such Party's consolidated shareholders' equity set
         forth on its balance sheet as of September 30, 1996, which is a part of
         the ONSB Financial Statements or the LSB Financial Statements, as the
         case may be; or (ii) the inability of such Party to perform its
         obligations under this Agreement or to consummate the Merger or the
         other transactions contemplated by this Agreement; provided that
         "Material Adverse Effect" shall not be deemed to include the impact of
         (a) changes in banking and similar Laws of general applicability or
         interpretations thereof by courts or governmental authorities, (b)
         changes in GAAP or regulatory accounting principles generally
         applicable to banks and their holding companies, (c) the Merger and
         compliance with the provisions of this Agreement on the operating
         performance of the Parties, and (d) actions and omissions of a Party or
         any of its Subsidiaries taken with the prior informed written consent
         of the other Party.

                  "MERGER" shall mean the merger of ONSB with and into LSB Bank
         referred to in Section 1.1 hereof.

                  "NASD" shall mean the National Association of Securities
         Dealers, Inc.

                  "NASDAQ/NMS" shall mean the National Market System of the NASD
         Automated Quotations System.

                  "NCBCA" shall mean the North Carolina Business Corporation 
         Act.

                  "1933 ACT" shall mean the Securities Act of 1933, as amended.

                  "1934 ACT" shall mean the Securities Exchange Act of 1934, as
         amended.



                                      A-58
<PAGE>   159



                  "ONSB COMMON STOCK" shall mean the common stock, par value
         $5.00 per share, of ONSB.

                  "ONSB COMPANIES" shall mean, collectively, ONSB and all ONSB
         Subsidiaries.

                  "ONSB DISCLOSURE MEMORANDUM" shall mean the written
         information entitled "Old North State Bank Disclosure Memorandum"
         delivered to LSB prior to LSB's execution of this Agreement, describing
         in reasonable detail the matters contained therein and, with respect to
         each disclosure made therein, specifically referencing each Section of
         this Agreement under which such disclosure is being made. Information
         disclosed with respect to one Section shall not be deemed to be
         disclosed for purposes of any other Section not specifically referenced
         with respect thereto. Such ONSB Disclosure Memorandum is hereby
         incorporated by reference herein and made a part hereof, and may be
         referred to in this Agreement and any other related instrument or
         document without being attached hereto or thereto.

                  "ONSB FINANCIAL STATEMENTS" shall mean (i) the consolidated
         balance sheets (including related notes and schedules, if any) of ONSB
         as of September 30, 1996, and as of December 31, 1995 and 1994, and the
         related statements of income, changes in shareholders' equity, and cash
         flows (including related notes and schedules, if any) for the nine
         months ended September 30, 1996, and for each of the three fiscal years
         ended December 31, 1995, 1994 and 1993, as filed by ONSB in FRB/FDIC
         Documents, and (ii) the consolidated balance sheets of ONSB (including
         related notes and schedules, if any) and related statements of income,
         changes in shareholders' equity, and cash flows (including related
         notes and schedules, if any) included in FRB/FDIC Documents filed with
         respect to periods ended subsequent to September 30, 1996.

                  "ONSB PROXY STATEMENT" shall mean the proxy statement used by
         ONSB to solicit the approval of its shareholders of the transactions
         contemplated by this Agreement, which shall include the prospectus of
         LSB relating to the issuance of LSB Common Stock to holders of ONSB
         Common Stock in connection with the transactions contemplated in this
         Agreement.

                  "ONSB STOCK PLANS" shall mean the existing stock option plans
         of ONSB designated as follows: (i) 1989 Employee Stock Option Plan of
         Piedmont BancShares Corporation (assumed by ONSB in connection with its
         merger with Piedmont BancShares Corporation on December 28, 1995), and
         (ii) 1990 Incentive Stock Option Plan of Old North State Bank.

                  "ONSB SUBSIDIARIES" shall mean the Subsidiaries of ONSB, which
         shall include the ONSB Subsidiaries described in Section 5.4 hereof and
         any corporation,


                                      A-59
<PAGE>   160



         bank, savings association, or other organization acquired as a
         Subsidiary of ONSB in the future and owned by ONSB at the Effective
         Time.

                  "ONSB WARRANTS" shall mean the existing warrants issued by
         ONSB to purchase 40,342 shares of ONSB Common Stock, immediately
         exercisable at $9.09 per share, which expire on April 11, 2000.

                  "ORDER" shall mean any administrative decision or award,
         decree, injunction, judgment, order, quasi-judicial decision or award,
         ruling, or writ of any federal, state, local or foreign or other court,
         arbitrator, mediator, tribunal, administrative agency or Regulatory
         Authority.

                  "PARTICIPATION FACILITY" shall mean any facility or property
         in which the Party in question or any of its Subsidiaries participates
         in the management and, where required by the context, said term means
         the owner or operator of such facility or property, but only with
         respect to such facility or property.

                  "PARTY" shall mean either ONSB or LSB, and "Parties" shall
         mean both ONSB and LSB.

                  "PERMIT" shall mean any federal, state, local, and foreign
         governmental approval, authorization, certificate, easement, filing,
         franchise, license, notice, permit, or right to which any Person is a
         party or that is or may be binding upon or inure to the benefit of any
         Person or its securities, Assets or business.

                  "PERSON" shall mean a natural person or any legal, commercial
         or governmental entity, such as, but not limited to, a corporation,
         general partnership, joint venture, limited partnership, limited
         liability company, limited liability partnership, trust, business
         association, group acting in concert, or any person acting in a
         representative capacity.

                  "PLAN OF MERGER" shall mean the Plan of Merger, in
         substantially in the form of Exhibit 1 hereto, to be entered into by
         ONSB and LSB Bank setting forth the terms of the Merger.

                  "PRICING PERIOD" shall mean the fifteen (15) consecutive
         trading days preceding the beginning of the 10-day period ending on the
         Closing Date.

                  "REGISTRATION STATEMENT" shall mean the Registration Statement
         on Form S-4, or other appropriate form, including any pre-effective or
         post-effective amendments or supplements thereto, filed with the SEC by
         LSB under the 1933 Act with respect to the shares of LSB Common Stock
         to be issued to the shareholders of ONSB in connection with the
         transactions contemplated by this Agreement.


                                      A-60
<PAGE>   161



                  "REGULATORY AUTHORITIES" shall mean, collectively, the Federal
         Trade Commission, the United States Department of Justice, the FRB, the
         Office of Thrift Supervision (including its predecessor, the Federal
         Home Loan Bank Board), the Office of the Comptroller of the Currency,
         the FDIC, all state regulatory agencies having jurisdiction over the
         Parties and their respective Subsidiaries, the NASD, and the SEC.

                  "REPRESENTATIVE" shall mean any investment banker, financial
         advisor, attorney, accountant, consultant, or other representative of a
         Person.

                  "RIGHTS" shall mean all arrangements, calls, commitments,
         Contracts, options, rights to subscribe to, scrip, understandings,
         warrants, or other binding obligations of any character whatsoever
         relating to, or securities or rights convertible into or exchangeable
         for, shares of the capital stock of a Person or by which a Person is or
         may be bound to issue additional shares of its capital stock or other
         Rights.

                  "SEC" shall mean the United State Securities and Exchange
         Commission.

                  "SEC DOCUMENTS" shall mean all forms, proxy statements,
         registration statements, reports, schedules, and other documents filed,
         or required to be filed, by a Party or any of its Subsidiaries with any
         Regulatory Authority pursuant to the Securities Laws.

                  "SECURITIES LAWS" shall mean the 1933 Act, the 1934 Act, the
         Investment Company Act of 1940, as amended, the Investment Advisors Act
         of 1940, as amended, the Trust Indenture Act of 1939, as amended, and
         the rules and regulations of any Regulatory Authority promulgated
         thereunder.

                  "SHAREHOLDERS' MEETING" shall mean the meeting of the
         shareholders of ONSB to be held pursuant to Section 8.1 hereof,
         including any adjournment or adjournments thereof.

                  "SUBSIDIARIES" shall mean all those corporations, banks,
         associations, or other entities of which the entity in question owns or
         controls fifty percent (50%) or more of the outstanding equity
         securities either directly or through an unbroken chain of entities as
         to each of which fifty percent (50%) or more of the outstanding equity
         securities is owned directly or indirectly by its parent; provided,
         however, there shall not be included any such entity acquired through
         foreclosure or any such entity the equity securities of which are owned
         or controlled in a fiduciary capacity.

                  "SURVIVING BANK" shall mean LSB Bank, as the surviving bank
         resulting from the Merger.



                                      A-61
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                  "TAX" or "TAXES" shall mean all federal, state, local, and
         foreign taxes, charges, fees, levies, imposts, duties, or other
         assessments, including income, gross receipts, excise, employment,
         sales, use, transfer, license, payroll, franchise, severance, stamp,
         occupation, windfall profits, environmental, federal highway use,
         commercial rent, customs duties, capital stock, paid-up capital,
         profits, withholding, Social Security, single business and
         unemployment, disability, real property, personal property,
         registration, ad valorem, value added, alternative or add-on minimum,
         estimated, or other tax or governmental fee of any kind whatsoever,
         imposed or required to be withheld by the United States or any state,
         local, foreign government or subdivision or agency thereof, including
         any interest, penalties or additions thereto.

                  "TAX RETURN" shall mean any report, return, information
         return, or other information required to be supplied to a taxing
         authority in connection with Taxes, including any return of an
         affiliated or combined or unitary group that includes a Party or its
         Subsidiaries.

                  (b)      The terms set forth below shall have the meanings
         ascribed thereto in the referenced sections:

                           Affiliate Agreement             Section 8.11
                           Closing                         Section 1.2
                           Effective Time                  Section 1.3
                           ERISA Affiliate                 Section 5.12(d)
                           Exchange Agent                  Section 4.1
                           Exchange Ratio                  Section 3.1(c)
                           LSB Benefit Plans               Section 6.15(a)
                           LSB ERISA Plan                  Section 6.15(a)
                           LSB Pension Plan                Section 6.15(a)
                           LSB SEC Reports                 Section 6.4(a)
                           Maximum Amount                  Section 8.14
                           ONSB Benefit Plans              Section 5.12(a)
                           ONSB Contracts                  Section 5.13
                           ONSB ERISA Plan                 Section 5.12(a)
                           ONSB Pension Plan               Section 5.12(a)
                           ONSB Options                    Section 3.6
                           ONSB FRB/FDIC Reports           Section 5.5(b)
                           Support Agreement               Preamble
                           Takeover Law                    Section 5.18
                           Tax Opinion                     Section 8.13

                  (b) Any singular term in this Agreement shall be deemed to
         include the plurals and any plural term the singular. Whenever the
         words "include", "includes"


                                      A-62
<PAGE>   163



         or "including" are used in this Agreement, they shall be deemed
         followed by the words "without limitations."

                  11.2 EXPENSES.

                  (a) Except as otherwise provided in this Section 11.2, each of
         the Parties shall bear and pay all direct costs and expenses incurred
         by it or on its behalf in connection with the transactions contemplated
         hereunder, including filing, registration and application fees,
         printing fees, and fees and expenses of its own financial or other
         consultants, investment bankers, accountants, and legal counsel, except
         that each of the Parties shall bear and pay one-half of (i) the SEC and
         Blue Sky filing fees incurred in connection with the Registration
         Statement, the ONSB Proxy Statement and the LSB Proxy Statement, and
         (ii) the printing and distribution costs incurred in connection with
         the printing and distribution of the Registration Statement, the ONSB
         Proxy Statement and the LSB Proxy Statement.

                  (b) Nothing contained in this Section 11.2 shall constitute or
         shall be deemed to constitute liquidated damages for the willful breach
         by a Party of the terms of this Agreement or otherwise limit the rights
         of the non-breaching Party.

                  (c) Nothing contained in this Section 11.2 shall affect the
         break-up fee arrangement between the Parties set forth in Section 8 of
         the Letter of Intent.

                  11.3 BROKERS AND FINDERS. Except for Scott & Stringfellow,
Inc. as to ONSB, and The Carson Medlin Company as to LSB, each of the Parties
represents and warrants that neither it nor any of its officers, directors,
employees, or Affiliates has employed any broker or finder or incurred any
Liability for any financial advisory fees, investment bankers' fees, brokerage
fees, commissions, or finders' fees in connection with this Agreement or the
transactions contemplated hereby. In the event of a claim by any broker or
finder based upon his or its representing or being retained by or allegedly
representing or being retained by ONSB or LSB, each of ONSB and LSB, as the case
may be, agrees to indemnify and hold the other Party harmless of and from any
Liability in respect of any such claim.

                  11.4 ENTIRE AGREEMENT. Except for the binding provisions of
the Letter of Intent, the Option Agreement and the Confidentiality Agreement, or
as otherwise expressly provided herein, this Agreement (including the documents
and instruments referred to herein) constitutes the entire agreement among the
parties hereto with respect to the transactions contemplated hereunder and
supersedes all prior arrangements or understandings with respect thereto,
written or oral. Nothing in this Agreement, expressed or implied, is intended to
confer upon any Person, other than the parties hereto or their respective
successors, any rights, remedies, obligations, or liabilities under or by reason
of this Agreement, other than as provided in Section 8.11 hereof.


                                      A-63
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                  11.5 AMENDMENTS. To the extent permitted by Law, this
Agreement may be amended by a subsequent writing signed by each of the parties
hereto upon the approval of the Boards of Directors of each of the Parties,
whether before or after shareholder approval of this Agreement has been
obtained.

                  11.6 WAIVERS.

                  (a) Prior to or at the Effective Time, LSB, acting through its
         Board of Directors, Chairman of the Board, President, Chief Executive
         Officer, or other authorized officer, shall have the right to waive any
         Default in the performance of any term of this Agreement by ONSB, to
         waive on behalf of LSB and LSB Bank or extend the time for the
         compliance or fulfillment by ONSB of any and all of its obligations
         under this Agreement, and to waive any or all of the conditions
         precedent to the obligations of LSB under this Agreement, except any
         condition which, if not satisfied, would result in the violation of any
         Law. No such waiver shall be effective unless in writing signed by such
         duly authorized officer of LSB.

                  (b) Prior to or at the Effective Time, ONSB, acting though its
         Board of Directors, Chairman of the Board, President, Chief Executive
         Officer, or other authorized officer, shall have the right to waive on
         behalf of ONSB any Default in the performance of any term of this
         Agreement by LSB or LSB Bank, to waive or extend the time for the
         compliance or fulfillment by LSB of any and all of its obligations
         under this Agreement, and to waive any or all of the conditions
         precedent to the obligations of ONSB under this Agreement, except any
         condition which, if not satisfied, would result in the violation of any
         Law. No such waiver shall be effective unless in writing signed by such
         duly authorized officer of ONSB.

                  (c) The failure of any Party at any time or times to require
         performance of any provision hereof shall in no manner affect the right
         of such Party at a later time to enforce the same or any other
         provision of this Agreement. No waiver of any condition or of the
         breach of any term contained in this Agreement in one or more instances
         shall be deemed to be or construed as a further or continuing waiver of
         such condition or breach or a waiver of any other condition or of the
         breach of any other term of this Agreement.

                  11.7 ASSIGNMENT. Except as expressly contemplated hereby,
neither this Agreement nor any of the rights, interests or obligations hereunder
shall be assigned by any party hereto (whether by operation of Law or otherwise)
without the prior written consent of the other parties hereto. Subject to the
preceding sentence, this Agreement will be binding upon, inure to the benefit
of, and be enforceable by, the parties hereto and their respective successors
and assigns.



                                      A-64
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                  11.8 NOTICES. All notices or other communications which are
required or permitted hereunder shall be in writing and sufficient if delivered
by hand, by facsimile transmission, by registered or certified mail, postage
pre-paid, or by courier or overnight carrier, to the persons at the address set
forth below (or at such other address as may be provided hereunder), and shall
be deemed to have been delivered as of the date so received:

                  LSB and LSB Bank:  LSB Bancshares, Inc.
                                     One LSB Plaza
                                     Lexington, North Carolina 27292
                                     Telecopy Number: (910) 249-1589

                                     Attention:  Robert F. Lowe
                                                 Chairman of the Board, 
                                                 President and
                                                 Chief Executive Officer


                  Copy to Counsel:  Hunton & Williams
                                    One NationsBank Plaza, Suite 2650
                                    101 South Tryon Street
                                    Charlotte, North Carolina 28280
                                    Telecopy Number: (704) 378-4890

                                    Attention:  David E. Johnston

                  ONSB:             Old North State Bank
                                    161 South Stratford Road
                                    Winston-Salem, North Carolina 27104
                                    Telecopy Number: (910) 631-3922
                                    Attention:  Nicholas A. Daves
                                                Chairman of the Board

                  Copy to Counsel:  Bell, Davis & Pitt, P.A.
                                    635 West Fourth Street
                                    Winston-Salem, North Carolina  27101
                                    Telecopy Number: (910) 722-6558
                                    Attention: John W. Babcock


                  11.9 GOVERNING LAW. This Agreement shall be governed by and
construed in accordance with the Laws of the State of North Carolina, without
regard to any applicable conflicts of Laws, except to extent that the federal
laws of the United States may apply to the Merger.



                                      A-65
<PAGE>   166



                  11.10 COUNTERPARTS. This Agreement may be executed in two or
more counterparts, each of which shall be deemed to be an original, but all of
which together shall constitute one and the same instrument.

                  11.11 CAPTIONS. The captions contained in this Agreement are
for reference purposes only and are not part of this Agreement

                  11.12 INTERPRETATIONS. Neither this Agreement nor any
uncertainty or ambiguity herein shall be construed or resolved against any
party, whether under any rule of construction or otherwise. No party to this
Agreement shall be considered the draftsman. The parties acknowledge and agree
that this Agreement has been reviewed, negotiated and accepted by all parties
and their attorneys and shall be construed and interpreted according to the
ordinary meaning of the words used so as fairly to accomplish the purposes and
intentions of all parties hereto.

                  11.13 ENFORCEMENT OF AGREEMENT. The parties hereto agree that
irreparable damage would occur in the event that any of the provisions of this
Agreement was not performed in accordance with its specific terms or was
otherwise breached. It is accordingly agreed that the parties shall be entitled
to an injunction or injunctions to prevent breaches of this Agreement and to
enforce specifically the terms and provisions hereof in any court of the United
States or any state having jurisdiction, this being in addition to any other
remedy to which they are entitled at law or equity.

                  11.14 SEVERABILITY. Any term or provision of this Agreement
which is invalid or unenforceable in any jurisdiction shall, as to that
jurisdiction, be ineffective to the extent of such invalidity or
unenforceability without rendering invalid or unenforceable the remaining terms
and provision of this Agreement or affecting the validity or enforceability of
any of the terms or provisions of this Agreement in any other jurisdiction. If
any provision of this Agreement is so broad as to be unenforceable the provision
shall be interpreted to be only so broad as is enforceable.


                       [Signatures On The Following Page]


                                      A-66
<PAGE>   167



                  IN WITNESS WHEREOF, each of the parties hereto has caused this
Agreement to be executed on its behalf and its corporate seal to be hereunto
affixed and attested by officers thereunto, all duly authorized, all as of the
day and year first above written.


ATTEST:                             LSB BANCSHARES, INC.



- -------------------------------     ------------------------------------------
Secretary                           Robert F. Lowe
                                    Chairman, President and Chief Executive
                                    Officer
[CORPORATE SEAL]


ATTEST:                             LEXINGTON STATE BANK




- -------------------------------     ------------------------------------------
Secretary                           Robert F. Lowe
                                    Chairman, President and Chief Executive
                                    Officer
[CORPORATE SEAL]


ATTEST:                             OLD NORTH STATE BANK




- -------------------------------     ------------------------------------------
Secretary                           Nicholas A. Daves
                                    Chairman of the Board
[CORPORATE SEAL]

                                    ------------------------------------------
                                    Robert E. Marziano
                                    President and Chief Executive Officer





                                      A-67

<PAGE>   168
                                                                    APPENDIX B 

           PROVISIONS OF THE NORTH CAROLINA BUSINESS CORPORATION ACT
                    RELATING TO DISSENTERS' APPRAISAL RIGHTS
 
                                  ARTICLE 13.
 
                               DISSENTERS' RIGHTS
 
                                    PART 1.
 
                 RIGHT TO DISSENT AND OBTAIN PAYMENT FOR SHARES
                                 SEC. 55-13-01
 
DEFINITIONS.  In this Article:
 
     (1) "Corporation" means the issuer of the shares held by a dissenter before
the corporate action, or the surviving or acquiring corporation by merger or
share exchange of that issuer.
 
     (2) "Dissenter" means a shareholder who is entitled to dissent from
corporate action under G.S. 55-13-02 and who exercises that right when and in
the manner required by G.S. 55-13-20 through 55-13-28.
 
     (3) "Fair value", with respect to a dissenter's shares, means the value of
the shares immediately before the effectuation of the corporate action to which
the dissenter objects, excluding any appreciation or depreciation in
anticipation of the corporate action unless exclusion would be inequitable.
 
     (4) "Interest" means interest from the effective date of the corporate
action until the date of payment, at a rate that is fair and equitable under all
the circumstances, giving due consideration to the rate currently paid by the
corporation on its principal bank loans, if any, but not less than the rate
provided in G.S. 24-1.
 
     (5) "Record shareholder" means the person in whose name shares are
registered in the records of a corporation or the beneficial owner of shares to
the extent of the rights granted by a nominee certificate on file with a
corporation.
 
     (6) "Beneficial shareholder" means the person who is a beneficial owner of
shares held in a voting trust or by a nominee as the record shareholder.
 
     (7) "Shareholder" means the record shareholder or the beneficial
shareholder.
 
                                 SEC. 55-13-02
 
                                RIGHT TO DISSENT
 
     (a) In addition to any rights granted under Article 9, a shareholder is
entitled to dissent from, and obtain payment of the fair value of his shares in
the event of, any of the following corporate actions:
 
          (1) Consummation of a plan of merger to which the corporation (other
     than a parent corporation in a merger under G.S. 55-11-04) is a party
     unless (i) approval by the shareholders of that corporation is not required
     under G.S. 55-11-03(g) or (ii) such shares are then redeemable by the
     corporation at a price not greater than the cash to be received in exchange
     for such shares;
 
          (2) Consummation of a plan of share exchange to which the corporation
     is a party as the corporation whose shares will be acquired, unless such
     shares are then redeemable by the corporation at a price not greater than
     the cash to be received in exchange for such shares;
 
          (3) Consummation of a sale or exchange of all, or substantially all,
     of the property of the corporation other than as permitted by G.S.
     55-12-01, including a sale in dissolution, but not including a sale
     pursuant to court order or a sale pursuant to a plan by which all or
     substantially all of the net proceeds of the sale will be distributed in
     cash to the shareholders within one year after the date of sale;
 
                                     B-1
<PAGE>   169


 
          (4) An amendment of the articles of incorporation that materially and
     adversely affects rights in respect of a dissenter's shares because it
 
             (i) alters or abolishes a preferential right of the shares;
 
             (ii) creates, alters, or abolishes a right in respect of
        redemption, including a provision respecting a sinking fund for the
        redemption or repurchase, of the shares;
 
             (iii) alters or abolishes a preemptive right of the holder of the
        shares to acquire shares or other securities;
 
             (iv) excludes or limits the right of the shares to vote on any
        matter, or to cumulate votes;
 
             (v) reduces the number of shares owned by the shareholder to a
        fraction of a share if the fractional share so created is to be acquired
        for cash under G.S. 55-6-04; or
 
             (vi) changes the corporation into a nonprofit corporation or
        cooperative organization;
 
          (5) Any corporate action taken pursuant to a shareholder vote to the
     extent the articles of incorporation, bylaws, or a resolution of the board
     of directors provides that voting or nonvoting shareholders are entitled to
     dissent and obtain payment for their shares.
 
          (b) A shareholder entitled to dissent and obtain payment for his
     shares under this Article may not challenge the corporate action creating
     his entitlement, including without limitation a merger solely or partly in
     exchange for cash or other property, unless the action is unlawful or
     fraudulent with respect to the shareholder or the corporation.
 
                                 SEC. 55-13-03
 
                   DISSENT BY NOMINEES AND BENEFICIAL OWNERS
 
     (a) A record shareholder may assert dissenter's rights as to fewer than all
the shares registered in his name only if he dissents with respect to all shares
beneficially owned by any one person and notifies the corporation in writing of
the name and address of each person on whose behalf he asserts dissenters'
rights. The rights of a partial dissenter under this subsection are determined
as if the shares as to which he dissents and his other shares were registered in
the names of different shareholders.
 
     (b) A beneficial shareholder may assert dissenters' rights as to shares
held on his behalf only if:
 
          (1) He submits to the corporation the record shareholder's written
     consent to the dissent not later than the time the beneficial shareholder
     asserts dissenters' rights; and
 
          (2) He does so with respect to all shares of which he is the
     beneficial shareholder.
 
                                       B-2
<PAGE>   170


 
                                     PART 2
 
                  PROCEDURE FOR EXERCISE OF DISSENTERS' RIGHTS
 
                                 SEC. 55-13-20
 
                          NOTICE OF DISSENTERS' RIGHTS
 
     (a) If proposed corporate action creating dissenters' rights under G.S.
55-13-02 is submitted to a vote at a shareholders' meeting, the meeting notice
must state that shareholders are or may be entitled to assert dissenters' rights
under this Article and be accompanied by a copy of this Article.
 
     (b) If corporate action creating dissenters' rights under G.S. 55-13-02 is
taken without a vote of shareholders, the corporation shall no later than 10
days thereafter notify in writing all shareholders entitled to assert
dissenters' rights that the action was taken and send them the dissenters'
notice described in G.S. 55-13-22.
 
     (c) If a corporation fails to comply with the requirements of this section,
such failure shall not invalidate any corporate action taken; but any
shareholder may recover from the corporation any damage which he suffered from
such failure in a civil action brought in his own name within three years after
the taking of the corporate action creating dissenters' rights under G.S.
55-13-02 unless he voted for such corporate action.
 
                                 SEC. 55-13-21
 
                       NOTICE OF INTENT TO DEMAND PAYMENT
 
     (a) If proposed corporate action creating dissenters' rights under G.S.
55-13-02 is submitted to a vote at a shareholders' meeting, a shareholder who
wishes to assert dissenters' rights:
 
          (1) Must give to the corporation, and the corporation must actually
     receive, before the vote is taken written notice of his intent to demand
     payment for his shares if the proposed action is effectuated; and
 
          (2) Must not vote his shares in favor of the proposed action.
 
     (b) A shareholder who does not satisfy the requirements of subsection (a)
is not entitled to payment for his shares under this Article.
 
                                 SEC. 55-13-22
 
                               DISSENTERS' NOTICE
 
     (a) If proposed corporate action creating dissenters' rights under G.S.
55-13-02 is authorized at a shareholders' meeting, the corporation shall mail by
registered or certified mail, return receipt requested, a written dissenters'
notice to all shareholders who satisfied the requirements of G.S. 55-13-21.
 
     (b) The dissenters' notice must be sent no later than 10 days after the
corporate action was taken, and must:
 
          (1) State where the payment demand must be sent and where and when
     certificates for certificated shares must be deposited;
 
          (2) Inform holders of uncertificated shares to what extent transfer of
     the shares will be restricted after the payment demand is received;
 
          (3) Supply a form for demanding payment;
 
          (4) Set a date by which the corporation must receive the payment
     demand, which date may not be fewer than 30 nor more than 60 days after the
     date the subsection (a) notice is mailed; and
 
          (5) Be accompanied by a copy of this Article.
 
                                       B-3
<PAGE>   171
 
                                 SEC. 55-13-23
 
                             DUTY TO DEMAND PAYMENT
 
     (a) A shareholder sent a dissenters' notice described in G.S. 55-13-22 must
demand payment and deposit his share certificates in accordance with the terms
of the notice.
 
     (b) The shareholder who demands payment and deposits his share certificates
under subsection (a) retains all other rights of a shareholder until these
rights are cancelled or modified by the taking of the proposed corporate action.
 
     (c) A shareholder who does not demand payment or deposit his share
certificates where required, each by the date set in the dissenters' notice, is
not entitled to payment for his shares under this Article.
 
                                 SEC. 55-13-24
 
                               SHARE RESTRICTIONS
 
     (a) The corporation may restrict the transfer of uncertificated shares from
the date the demand for their payment is received until the proposed corporate
action is taken or the restrictions released under G.S. 55-13-26.
 
     (b) The person for whom dissenters' rights are asserted as to
uncertificated shares retains all other rights of a shareholder until these
rights are cancelled or modified by the taking of the proposed corporate action.
 
                                 SEC. 55-13-25
 
                                OFFER OF PAYMENT
 
     (a) As soon as the proposed corporate action is taken, or upon receipt of a
payment demand, the corporation shall offer to pay each dissenter who complied
with G.S. 55-13-23 the amount the corporation estimates to be the fair value of
his shares, plus interest accrued to the date of payment, and shall pay this
amount to each dissenter who agrees in writing to accept it in full satisfaction
of his demand.
 
     (b) The offer of payment must be accompanied by:
 
          (1) The corporation's most recent available balance sheet as of the
     end of a fiscal year ending not more than 16 months before the date of
     offer of payment, an income statement for that year, a statement of cash
     flows for that year, and the latest available interim financial statements,
     if any;
 
          (2) A statement of the corporation's estimate of the fair value of the
     shares;
 
          (3) An explanation of how the interest was calculated;
 
          (4) A statement of the dissenter's right to demand payment under G.S.
     55-13-28; and
 
          (5) A copy of this Article.
 
                                 SEC. 55-13-26
 
                             FAILURE TO TAKE ACTION
 
     (a) If the corporation does not take the proposed action within 60 days
after the date set for demanding payment and depositing share certificates, the
corporation shall return the deposited certificates and release the transfer
restrictions imposed on uncertificated shares.
 
     (b) If after returning deposited certificates and releasing transfer
restrictions, the corporation takes the proposed action, it must send a new
dissenters' notice under G.S. 55-13-22 and repeat the payment demand procedure.
 
                                       B-4
<PAGE>   172
 
                                 SEC. 55-13-28
 
  PROCEDURE IF SHAREHOLDER DISSATISFIED WITH CORPORATION'S OFFER OR FAILURE TO
                                    PERFORM
 
     (a) A dissenter may notify the corporation in writing of his own estimate
of the fair value of his shares and amount of interest due, and demand payment
of his estimate or reject the corporation's offer under G.S. 55-13-25 and demand
payment of the fair value of his shares and interest due, if:
 
          (1) The dissenter believes that the amount offered under G.S. 55-13-25
     is less than the fair value of his shares or that the interest due is
     incorrectly calculated;
 
          (2) The corporation fails to make payment to a dissenter who accepts
     the corporation's offer under G.S. 55-13-25 within 30 days after the
     dissenter's acceptance; or
 
          (3) The corporation, having failed to take the proposed action, does
     not return the deposited certificates or release the transfer restrictions
     imposed on uncertificated shares within 60 days after the date set for
     demanding payment.
 
     (b) A dissenter waives his right to demand payment under this section
unless he notifies the corporation of his demand in writing (i) under
subdivision (a)(1) within 30 days after the corporation offered payment for his
shares or (ii) under subdivisions (a)(2) and (a) (3) within 30 days after the
corporation has failed to perform timely. A dissenter who fails to notify the
corporation of his demand under subsection (a) within such 30-day period shall
be deemed to have withdrawn his dissent and demand for payment.
 
                                    PART 3.
 
                          JUDICIAL APPRAISAL OF SHARES
 
                                 SEC. 55-13-30
 
                                  COURT ACTION
 
     (a) If a demand for payment under G.S. 55-13-28 remains unsettled, the
dissenter may commence a proceeding within 60 days after the date of his payment
demand under G.S. 55-13-28 and petition the court to determine the fair value of
the shares and accrued interest. Upon service upon it of the petition filed with
the court, the corporation shall pay to the dissenter the amount offered by the
corporation under G.S. 55-13-25.
 
     (b) If the dissenter does not commence the proceeding within the 60-day
period, the dissenter shall have an additional 30 days to either (i) accept in
writing the amount offered by the corporation under G.S. 55-13-25, upon which
the corporation shall pay such amount to the dissenter in full satisfaction of
his demand, or (ii) withdraw his demand for payment and resume the status of a
nondissenting shareholder. A dissenter who takes no action within such 30-day
period shall be deemed to have withdrawn his dissent and demand for payment.
 
     (c) Reserved for future codification purposes.
 
     (d) The court shall have the discretion to make all dissenters (whether or
not residents of this State) whose demands remain unsettled parties to the
proceeding as in an action against their shares and all parties must be served
with a copy of the petition. Nonresidents may be served by registered or
certified mail or by publication as provided by law.
 
     (e) The jurisdiction of the court in which the proceeding is commenced
under subsection (b) is plenary and exclusive. The court may appoint one or more
persons as appraisers to receive evidence and recommend decision on the question
of fair value. The appraisers have the powers described in the order appointing
them, or in any amendment to it. The parties are entitled to the same discovery
rights as parties in other civil proceedings. However, in a proceeding by a
dissenter in a public corporation, there is no right to a trial by jury.
 
     (f) Each dissenter made a party to the proceeding is entitled to judgment
for the amount, if any, by which the court finds the fair value of his shares,
plus interest, exceeds the amount paid by the corporation.
 
                                       B-5
<PAGE>   173
 
                                  SEC.55-13-31
 
                          COURT COSTS AND COUNSEL FEES
 
     (a) The court in an appraisal proceeding commenced under G.S. 55-13-30
shall determine all costs of the proceeding, including the reasonable
compensation and expenses of appraisers appointed by the court, and shall assess
the costs as it finds equitable.
 
     (b) The court may also assess the fees and expenses of counsel and experts
for the respective parties, in amounts the court finds equitable:
 
          (1) Against the corporation and in favor of any or all dissenters if
     the court finds the corporation did not substantially comply with the
     requirements of G.S. 55-13-20 through 55-13-28; or
 
          (2) Against either the corporation or a dissenter, in favor of either
     or any other party, if the court finds that the party against whom the fees
     and expenses are assessed acted arbitrarily, vexatiously, or not in good
     faith with respect to the rights provided by this Article.
 
     (c) If the court finds that the services of counsel for any dissenter were
of substantial benefit to other dissenters similarly situated, and that the fees
for those services should not be assessed against the corporation, the court may
award to these counsel reasonable fees to be paid out of the amounts awarded the
dissenters who were benefited.
 
                                       B-6
<PAGE>   174



                                                                      APPENDIX C


   
                                June 19, 1997
    


Board of Directors
Old North State Bank
Stratford Road Branch - P.O. Box 5068
Winston-Salem, NC  27113-5068

Gentlemen:

     You have asked us to render our opinion relating to the fairness, from a
financial point of view, to the shareholders of Old North State Bank ("Old
North State") of the terms of an Agreement and Plan of Reorganization and
Merger by and among LSB Bancshares, Inc. ("LSB"), Lexington State Bank ("LSB
Bank") and Old North State dated March 14, 1997 (the "Merger Agreement").  The
Merger Agreement provides for the merger of Old North State with and into LSB's
wholly owned subsidiary LSB Bank (the "Merger") and further provides that each
share of Common Stock of Old North State which is issued and outstanding
immediately prior to the Effective Date of the Merger shall be converted into a
number of shares of LSB Common Stock according to the following:

     (1)   If LSB's stock price is above $20.00 per share, then the
           Exchange Ratio (the "Exchange Ratio") shall equal the following:

             ER = [[(ALCP * $250,000) + $25,000,000]/IOS]/ALCP

             Where:

             ER   = Exchange Ratio
             ALCP = Average LSB Closing Price (as defined in the Merger
                    Agreement)
             IOS  = 1,582,678 shares of Old North State Common Stock, less 
                    any shares canceled; or,

     (2)   If LSB's stock price is below $20.00 per share, then the
           Exchange Ratio shall equal the following:

                 ER   = [[(ALCP*$1,000,000) + $10,000,000]/IOS]/ALCP



                                     C-1
<PAGE>   175

   
Board of Directors
Old North State Bank
June 19, 1997
Page 2
    


   
           In developing our opinion, we have, among other things, reviewed and
      analyzed:  (1) the Merger Agreement; (2) the Registration Statement and
      this Proxy Statement; (3) Old North State's audited financial statements
      for the three years ended December 31, 1996; (4) unaudited financial
      statements for the quarters ended March 31, 1996 and 1997 and other 
      internal information relating to Old North State prepared by Old North 
      State's management; (5) information regarding the trading market for the 
      common stocks of Old North State and LSB and the price ranges within 
      which the respective stocks have traded; (6) the relationship of prices 
      paid to relevant financial data such as net worth, assets, deposits and 
      earnings in certain bank and bank holding company mergers and 
      acquisitions in North Carolina in recent years; (7) LSB's annual reports 
      to shareholders and its audited financial statements for the three years 
      ended December 31, 1996; and (8) unaudited financial statements for the
      quarters ended March 31, 1996 and 1997 and other internal information 
      relating to LSB prepared by LSB's management.  We have discussed with
      members of management of Old North State and LSB the background to the
      Merger, reasons and basis for the Merger and the business and future
      prospects of Old North State and LSB individually and as a combined
      entity.  Finally, we have conducted such other studies, analyses and
      investigations, particularly of the banking industry, and considered such
      other information as we deemed appropriate and usual and customary for
      transactions such as this.
    

           In conducting our review and arriving at our opinion, we have relied
      upon and assumed the accuracy and completeness of the information
      furnished to us by or on behalf of Old North State and LSB.  We have not
      attempted independently to verify such information, nor have we made any
      independent appraisal of the assets of Old North State or LSB.  We have
      taken into account our assessment of general economic, financial market
      and industry conditions as they exist and can be evaluated at the date
      hereof, as well as our experience in business valuation in general.

           On the basis of our analyses and review and in reliance on the
      accuracy and completeness of the information furnished to us and subject
      to the conditions noted above, it is our opinion that, as of the date
      hereof the terms of the Merger Agreement are fair from a financial point
      of view to the shareholders of Old North State Bank Common Stock.

                                   Very truly yours,

                                   SCOTT & STRINGFELLOW, INC.


   
                                   By: /s/ G. Jacob Savage III
                                       ----------------------------------------
                                       G. Jacob Savage III, CFA
                                       Managing Director & First Vice President

    

                                     C-2
<PAGE>   176


                                                                      APPENDIX D







   
June 27, 1997
    

Board of Directors
LSB Bancshares, Inc.
One LSB Plaza
P.O. Box 867
Lexington, North Carolina 27293-0867

Members of the Board:

You have requested our opinion as to the fairness, from a financial point of
view, of the Exchange Ratio, as defined below, to the stockholders of LSB
Bancshares, Inc. ("LSB") under the terms of a certain Agreement and Plan of
Reorganization and Merger dated as of March 14, 1997 (the "Agreement") by and
among LSB, Lexington State Bank and Old North State Bank ("ONSB") pursuant to
which ONSB will merge with and into Lexington State Bank (the "Merger").  Under
the terms of the Agreement, each of the outstanding shares of ONSB common stock
shall be converted into and exchanged for .948 of a share of LSB common stock,
subject to certain adjustments (the "Exchange Ratio").  The foregoing summary
of the Merger is qualified in its entirety by reference to the Agreement.

The Carson Medlin Company is a National Association of Securities Dealers, Inc.
(NASD) member investment banking firm which specializes in the securities of
southeastern United States financial institutions.  As part of our investment
banking activities, we are regularly engaged in the valuation of southeastern
United States financial institutions and transactions relating to their
securities.  We regularly publish our research on independent community banks
regarding their financial and stock price performance.  We are familiar with the
commercial banking industry in North Carolina and the Southeast and the major
commercial banks operating in that market.  We have been retained by LSB in a
financial advisory capacity to render our opinion hereunder, for which we will
receive compensation.

In reaching our opinion, we have analyzed the respective financial positions,
both current and historical, of LSB and ONSB.  In connection with rendering our
opinion, we reviewed (i) the Agreement; (ii) the annual reports to stockholders
of LSB, including audited financial statements, for the five years ended
December 31, 1996; (iii) the annual reports to stockholders of ONSB, including
audited financial statements, for the five years ended December 31, 1996; (iv)
the Proxy Statement of LSB dated March 14, 1997 for the annual meeting of the
stockholders of LSB held on April 16, 1997; (v) the Proxy Statement of ONSB
dated April 12,



                                     D-1
<PAGE>   177


   
Board of Directors
LSB Bancshares, Inc.
June 27, 1997
Page 2
    



1997 for the annual meeting of the stockholders of ONSB held on May 12, 1997;
(vi) interim financial statements of LSB and ONSB through March 31, 1997; (vii)
a preliminary copy of the joint Proxy Statement prepared in connection with the
respective special meetings of the stockholders of LSB and ONSB to be held to
consider the Merger; and (viii) certain other financial and operating
information with respect to the business, operations and prospects of LSB and
ONSB.

We also (i) held discussions with members of the senior management of LSB and
ONSB regarding their respective historical and current business operations,
financial conditions and future prospects; (ii) reviewed the historical market
prices and trading activity for the common stocks of LSB and ONSB and compared
them with those of certain publicly traded companies which we deemed to be
relevant; (iii) compared the results of operations of LSB and ONSB with those
of certain banking companies which we deemed to be relevant; (iv) compared the
proposed financial terms of the Merger with the financial terms, to the extent
publicly available, of certain other recent business combinations of commercial
banking organizations; (v) analyzed the pro forma financial impact of the
Merger on LSB; and (vi) conducted such other studies, analyses, inquiries and
examinations as we deemed appropriate.

We have relied upon and assumed, without independent verification, the accuracy
and completeness of all information provided to us.  We have not performed or
considered any independent appraisal or evaluation of the assets of LSB and
ONSB.  The opinion we express herein is necessarily based upon market, economic
and other relevant considerations as they exist and can be evaluated as of the
date of this letter.

Based upon the foregoing, it is our opinion that the Exchange Ratio provided
for in the Agreement is fair, from a financial point of view, to the
stockholders of LSB.

Very truly yours,


   
/s/ The Carson Medlin Company
- -----------------------------
THE CARSON MEDLIN COMPANY
    


                                     D-2
<PAGE>   178


                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

         Sections 55-8-50 through 55-8-58 of the General Statutes of North
Carolina provide for indemnification of directors, officers, employees, and
agents of a North Carolina corporation.  Subject to certain exceptions, a
corporation may indemnify an individual made a party to a proceeding because he
is or was a director against liability incurred in the proceeding if (i) he
conducted himself in good faith; and (ii) he reasonably believed (a) in the
case of conduct in his official capacity with the corporation, that his conduct
was in its best interests, and (b) in all other cases, that his conduct was at
least not opposed to its best interests; and (iii) in the case of any criminal
proceeding, he had no reasonable cause to believe his conduct was unlawful.
Moreover, unless limited by its articles of incorporation, a corporation must
indemnify a director who was wholly successful, on the merits or otherwise, in
the defense of any proceeding to which he was a party because he is or was a
director of the corporation against reasonable expenses incurred by him in
connection with the proceeding.  Expenses incurred by a director in defending a
proceeding may be paid by the corporation in advance of the final disposition
of such proceeding as authorized by the board of directors in the specific case
or as authorized or required under any provision in the articles of
incorporation or bylaws or by any applicable resolution or contact upon receipt
of an undertaking by or on behalf of a director to repay such amount unless it
shall ultimately be determined that he is entitled to be indemnified by the
corporation against such expenses.  A director may also apply for court-ordered
indemnification under certain circumstances.

         Unless a corporation's articles of incorporation provide otherwise,
(i) an officer of a corporation is entitled to mandatory indemnification and is
entitled to apply for court-ordered indemnification to the same extent as a
director, (ii) the corporation may indemnify or advance expenses to an officer,
employee, or agent of a corporation to the same extent as to a director, and
(iii) a corporation may also indemnify or advance expenses to an officer,
employee, or agent who is not a director to the extent, consistent with public
policy, that may be provided by its articles of incorporation, bylaws, general
or specific action of its board of directors, or contract.

         In addition and separate and apart from the indemnification rights
discussed above, the statutes further provide that a corporation may, in its
articles of incorporation or bylaws, or by contract or resolution, indemnify or
agree to indemnify any one of its directors, officers, employees, or agents
against liability and expenses in any proceeding (including without limitation
a proceeding brought by or on behalf of the corporation itself) arising out of
their status as such or their activities in any of the foregoing capacities;
provided, however, that a corporation may not indemnify or agree to indemnify a
person against liability or expenses he may incur on account of his activities
which were at the time taken known or believed by him to be clearly in conflict
with the best interests of the corporation.  A corporation may likewise and to
the same extent indemnify or agree to indemnify any person who, at the request
of the corporation, is or was serving as a director, officer, partner, trustee,
employee, or agent of another foreign or domestic corporation, partnership,
joint venture, trust or other enterprise or as a trustee or administrator under
an employee benefit plan.  Any such provision for indemnification may also
include provisions for recovery from the corporation of reasonable costs,
expenses, and attorneys' fees in connection with the enforcement of rights to
indemnification and may further include provisions establishing reasonable
procedures for determining and enforcing the rights granted therein.






<PAGE>   179


         As permitted by North Carolina statutory provisions, Article 8 of the
Bylaws of the Registrant provides as follows:





                                       ii
<PAGE>   180


                 Section 1.  Indemnification Provisions.  Any person who at any
         time serves or has served as a director or officer of the corporation
         or of any wholly owned subsidiary of the corporation, or in such
         capacity at the request of the corporation for any other foreign or
         domestic corporation, partnership, joint venture, trust or other
         enterprise, or as a trustee or administrator under any employee
         benefit plan of the corporation or of any wholly owned subsidiary
         thereof (a "Claimant"), shall have the right to be indemnified and
         held harmless by the corporation to the fullest extent from time to
         time permitted by law against all liabilities and litigation expenses
         (as hereinafter defined) in the event a claim shall be made or
         threatened against that person in, or that person is made or
         threatened to be made a party to, any threatened, pending or completed
         action, suit or proceeding, whether civil, criminal, administrative or
         investigative, and whether or not brought by or on behalf of the
         corporation, including all appeals therefrom (a "proceeding"), arising
         out of that person's status as such or that person's activities in any
         such capacity; provided, that such indemnification shall not be
         effective with respect to (a) that portion of any liabilities or
         litigation expenses with respect to which the Claimant is entitled to
         receive payment under any insurance policy or (b) any liabilities or
         litigation expenses incurred on account of any of the Claimant's
         activities which at the time taken known or believed by the Claimant
         to be clearly in conflict with the best interests of the corporation.

                 Section 2.  Definitions.  As used in this Article, (a)
         "liabilities" shall include, without limitation, (1) payments in
         satisfaction of any judgment, money decree, excise tax, fine or
         penalty for which Claimant had become liable in any proceeding and (2)
         payments in settlement of any such proceeding subject, however, to
         Section 3 of this Article; (b) "litigation expenses" shall include,
         without limitation, (1) reasonable costs and expenses and attorneys'
         fees and expenses actually incurred by the Claimant in connection with
         any proceeding and (2) reasonable costs and expenses and attorneys'
         fees and expenses in connection with the enforcement of rights to the
         indemnification granted hereby or by applicable law, if such
         enforcement is successful in whole or in part; and (c) "disinterested
         directors" shall mean directors who are not party to the proceeding in
         question.

                 Section 3.  Settlements.  The corporation shall not be liable
         to indemnify the Claimant for any amounts paid in settlement of any
         proceeding effected without the corporation's written consent.  The
         corporation will not unreasonably withhold its consent to any proposed
         settlement.

                 Section 4.  Litigation Expense Advances.

                 (a)Except as provided in subsection (b) below, any litigation
          expenses shall be advanced to any Claimant within 30 days of receipt
          by the secretary of the corporation of a demand therefor, together
          with an undertaking by or on behalf of the Claimant to repay to the
          corporation such amount unless it is ultimately determined that
          Claimant is entitled to be indemnified by the corporation against
          such expenses.  The secretary shall promptly forward notice of the
          demand and undertaking immediately to all directors of the
          corporation.

                 (b)Within 10 days after mailing of notice to the directors
           pursuant to subsection (a) above, any disinterested director may, if
           desired, call a meeting of all disinterested directors to review the
           reasonableness of the expenses so requested.  No advance shall be
           made if a majority of the disinterested directors affirmatively
           determines that the item of expense is unreasonable in amount; but
           if the disinterested directors determine that a portion of the
           expense item is reasonable, the corporation shall advance such
           portion.





                                      iii
<PAGE>   181

                 Section 5.  Approval of Indemnification Payments.  Except as
           provided in Section 4 of this Article, the board of directors of the
           corporation shall take all such action as may be necessary and
           appropriate to authorize the corporation to pay the indemnification
           required by Section 1 of this Article, including, without
           limitation, making a good faith evaluation of the manner in which
           the Claimant acted and of the reasonable amount of indemnity due the
           Claimant.  In taking any such action, any Claimant who is a director
           of the corporation shall not be entitled to vote on any matter
           concerning such Claimant's right to indemnification.

                 Section 6.  Suits by Claimant.  No Claimant shall be entitled
           to bring suit against the corporation to enforce his rights under
           this Article until sixty days after a written claim has been
           received by the corporation, together with any undertaking to repay
           as required by Section 4 of this Article.  It shall be a defense to
           any such action that the Claimant's liabilities or litigation
           expenses were incurred on account of activities described in clause
           (b) of Section 1, but the burden of proving this defense shall be on
           the corporation.  Neither the failure of the corporation to have
           made a determination prior to the commencement of the action to the
           effect that indemnification of the Claimant is proper in the
           circumstances, nor an actual determination by the corporation that
           the Claimant had not met the standard of conduct described in clause
           (b) of Section 1, shall be a defense to the action or create a
           presumption that the Claimant has not met the applicable standard of
           conduct.

                 Section 7.  Consideration; Personal Representatives and Other
           Remedies.  Any person who during such time as this Article or
           corresponding provisions of predecessor bylaws is or has been in
           effect serves or has served in any of the aforesaid capacities for
           or on behalf of the corporation shall be deemed to be doing so or to
           have done so in reliance upon, and as consideration for, the right
           of indemnification provided herein or therein.  The right of
           indemnification provided herein or therein shall inure to the
           benefit of the legal representatives of any person who qualifies or
           would qualify as a Claimant hereunder, and the right shall not be
           exclusive of any other rights to which the person or legal
           representative may be entitled apart from this Article.

                 Section 8.  Scope of Indemnification Rights.  The rights
            granted herein shall not be limited by the provisions of Section
            55-8-51 of the General Statutes of North Carolina or any successor
            statute.

                 As permitted by applicable statutes, the Registrant has
           purchased a standard director and officer liability insurance policy
           that will, subject to certain limitations, indemnify the Registrant
           and its officers and directors for damages they become legally
           obligated to pay as a result of any negligent act, error, or
           omission committed by directors or officers while acting in their
           capacities as such.

                 The indemnification provisions in the Bylaws may be
           sufficiently broad to permit indemnification of the Registrant's
           officers and directors for liabilities arising under the 1933 Act.





                                       iv
<PAGE>   182


ITEM 21.  EXHIBITS.

   
<TABLE>
<CAPTION>
             EXHIBIT NO.                              DESCRIPTION                                                                  
             ----------                               -----------                                                                  
             <S>                                      <C>                                                                          
             2.1*                                     Agreement and Plan of Reorganization and Merger, dated as                    
                                                      of March 14, 1997, Lexington State Bank and Old North State                
                                                      Bank (included                                                               
                                                      as Appendix A to the Prospectus/Proxy Statement contained                    
                                                      in Part I).                                                                  
             5.1                                      Opinion of Hunton & Williams regarding the validity 
                                                      of the shares of common stock of LSB Bancshares, Inc.  to be 
                                                      issued in connection with the Merger.                                        
             8.1*                                     Form of opinion of Bell, Davis & Pitt, P.A. regarding the 
                                                      federal income tax consequences of the Merger.      
             13.1*                                    Old North State Bank Annual Report on Form 10-KSB,  as                       
                                                      amended, for the fiscal year ended December 31, 1996.                        
             13.2*                                    Old North State Bank Annual Report to Shareholders, as                       
                                                      amended, for the fiscal year ended December 31, 1996.                        
             13.3*                                    Old North State Bank 1997 Proxy Statement.
             13.4*                                    Old North State Bank Quarterly Report on Form  10-QSB for                    
                                                      the quarterly period ended March 31, 1997.                                   
             23.1*                                    Consent of Turlington and Company, L.L.P., independent                       
                                                      certified public accountants for LSB Bancshares, Inc.                        
             23.2*                                    Consent of Larrowe, Cardwell & Company, LC independent                       
                                                      certified public accounts for Old North State Bank.                          
             23.3                                     Consent of Hunton & Williams (included in Exhibit 5.1).                      
             23.4*                                    Consent of Bell, Davis & Pitt, P.A.                                          
             23.5                                     Consent of Scott & Stringfellow, Inc.                                        
             23.6                                     Consent of The Carson Medlin Company.                                        
             24.1*                                    Powers of Attorney  (included on the signature page                          
                                                      hereof)                                                                      
             99.1*                                    Form of proxy of Old North State Bank.                                       
             99.2*                                    Form of proxy of LSB Bancshares, Inc.                                        
             99.3*                                    Old North State Bank Current Report on Form 8-K  dated                       
                                                      March 21, 1997.                                                              
             99.4                                     Consent of Lloyd G. Walter, Jr. to be named as a person 
                                                      about to become a director.
             99.5                                     Consent of Marvin D. Gentry to be named as a person 
                                                      about to become a director.
</TABLE>
    

* Previously filed.





                                       v
<PAGE>   183

ITEM 22. UNDERTAKINGS.

   A.    The undersigned registrant hereby undertakes:

         (1)     To file, during any period in which offers or sales are being
                 made, a post-effective amendment to this registration
                 statement;

         (i)     To include any prospectus required by Section 10(a)(3) of the
                 Securities Act of 1933;

         (ii)    To reflect in the prospectus any facts or events arising after
                 the effective date of the registration statement (or the most
                 recent post-effective amendment thereof) which, individually
                 or in the aggregate, represent a fundamental change in the
                 information set forth in the registration statement.
                 Notwithstanding the foregoing, any increase or decrease in
                 volume of securities offered (if the total dollar value of
                 securities offered would not exceed that which was registered)
                 and any deviation from the low or high end of the estimated
                 maximum offering range may be reflected in the form of
                 prospectus filed with the Commission pursuant to Rule 424(b)
                 if, in the aggregate, the changes in volume and price
                 represent no more than a 20 percent change in the maximum
                 aggregate offering price set forth in the "Calculation of
                 Registration Fee" table in the effective registration
                 statement.

         (iii)   To include any material information with respect to the plan
                 of distribution not previously disclosed in the registration
                 statement or any material change to such information in the
                 registration statement;

         (2)     That, for the purpose of determining any liability under the
                 Securities Act of 1933, each such post- effective amendment
                 shall be deemed to be a new registration statement relating to
                 the securities offered therein, and the offering of such
                 securities at that time shall be deemed to be the initial bona
                 fide offering thereof.

         (3)     To remove from registration by means of a post-effective
                 amendment any of the securities being registered which remain
                 unsold at the termination of the offering.

   B.    The undersigned registrant hereby undertakes that, for purposes of
         determining any liability under the Securities Act of 1933, each
         filing of the registrant's annual report pursuant to Section 13(a) or
         15(d) of the Securities Exchange Act of 1934 (and, where applicable,
         each filing of an employee benefit plan's annual report pursuant to
         Section 15(d) of the Securities Exchange Act of 1934) that is
         incorporated by reference in the registration statement shall be
         deemed to be a new registration statement relating to the securities
         offered therein, and the offering of such securities at that time
         shall be deemed to be the initial bona fide offering thereof.

   C.    Insofar as indemnification for liabilities arising under the
         Securities Act of 1933 may be permitted to directors, officers and
         controlling persons of the registrant pursuant to the foregoing
         provisions, or otherwise, the registrant has been advised that in the
         opinion of the Securities and Exchange Commission such indemnification
         is against public policy as expressed in the Act and is, therefore,
         unenforceable.  In the event that a claim for indemnification against
         such liabilities (other than the payment by the registrant of expenses
         incurred or paid by a director, officer or controlling person of the
         registrant in the successful defense of any action, suit or
         proceeding) is asserted by such director, officer or controlling
         person in connection with the securities being registered, the
         registrant will, unless in the opinion of its counsel the matter has
         been settled by controlling precedent, submit to a court of
         appropriate jurisdiction the question whether such indemnification by
         it is against public policy as expressed in the Act and will be
         governed by the final adjudication of such issue.



                                       vi
                                     
<PAGE>   184

   D.    (1) The undersigned registrant hereby undertakes as follows: that
         prior to any public reoffering of the securities registered hereunder
         through use of a prospectus which is a part of this registration
         statement, by any person or party who is deemed to be an underwriter
         within the meaning of Rule 145(c), the issuer undertakes that such
         reoffering prospectus will contain the information called for by the
         applicable registration form with respect to reofferings by persons
         who may be deemed underwriters, in addition to the information called
         for by the other items of the applicable form.

         (2) The registrant undertakes that every prospectus: (i) that is filed
         pursuant to paragraph (1) immediately preceding, or (ii) that purports
         to meet the requirements of Section 10(a)(3) of the Act and is used in
         connection with an offering of securities subject to Rule 415, will be
         filed as a part of an amendment to the registration statement and will
         not be used until such amendment is effective, and that, for purposes
         of determining any liability under the Securities Act of 1933, each
         such post-effective amendment shall be deemed to be a new registration
         statement relating to the securities offered therein, and the offering
         of such securities at that time shall be deemed to be the initial bona
         fide offering thereof.

  E.     The undersigned registrant hereby undertakes to respond to requests
         for information that is incorporated by reference into the prospectus
         pursuant to Item 4, 10(b), 11, or 13 of this form, within one business
         day of receipt of such request, and to send the incorporated documents
         by first class mail or other equally prompt means.  This includes
         information contained in documents filed subsequent to the effective
         date of the registration statement through the date of responding to
         the request.

  F.     The undersigned registrant hereby undertakes to supply by means of a
         post-effective amendment all information concerning a transaction, and
         the company being acquired involved therein, that was not the subject
         of and included in the registration statement when it became
         effective.





                                      vii
<PAGE>   185


                                   SIGNATURES


   
         Pursuant to the requirements of the Securities Act of 1933, the
registrant has duly caused this Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Lexington,
State of North Carolina, on July 1, 1997.
    

                                  LSB BANCSHARES, INC.


                                  By: /s/ Robert F. Lowe 
                                      -------------------------
                                      Robert F. Lowe 
                                      Chairman of the Board, President and Chief
                                      Executive Officer




                                     viii


<PAGE>   186

         Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

   
<TABLE>
<CAPTION>
             SIGNATURE                                          TITLE                                           DATE
             ---------                                          -----                                           ----
             <S>                                                <C>                                             <C>
             /s/ Margaret Lee W. Crowell*                       Director                                        July 1, 1997
             ---------------------------                                                                                     
             Margaret Lee W. Crowell

             /s/ Robert F. Lowe                                 Chairman of the Board,                          July 1, 1997
             ------------------                                  President and Chief Executive Officer           
             Robert F. Lowe                                      

             /s/ Robert E. Timberlake*                          Director                                        July 1, 1997
             ------------------------                                                                                        
             Robert E. Timberlake

             /s/ Julius S. Young, Jr.*                          Director                                        July 1, 1997
             ------------------------                                                                                        
             Julius S. Young, Jr.

             /s/ Leonard H. Beck*                               Director                                        July 1, 1997
             -------------------                                                                                             
             Leonard H. Beck

             /s/ Samuel R. Harris*                              Director                                        July 1, 1997
             --------------------                                                                                            
             Samuel R. Harris

             /s/ David A. Smith*                                Director                                        July 1, 1997
              -----------------                                                                                              
             David A. Smith

             /s/ Burr W. Sullivan*                              Director                                        July 1, 1997
             --------------------                                                                                            
             Burr W. Sullivan

             /s/ Peggy B. Barnhardt*                            Director                                        July 1, 1997
             ----------------------                                                                                          
             Peggy B. Barnhardt

             /s/ Walter A. Hill*                                Director                                        July 1, 1997
             ------------------                                                                                              
             Walter A. Hill

             /s/ Robert B. Smith, Jr.*                          Director                                        July 1, 1997
             ------------------------                                                                                        
             Robert B. Smith, Jr.

             /s/ Monty J. Oliver                                Secretary and Treasurer,                        July 1, 1997
             -------------------                                Chief Financial Officer
             Monty J. Oliver                                    (Chief Accounting Officer)
                                                                

                *By: /s/ Monty J. Oliver         
                     -------------------------          
                     Monty J. Oliver, 
                     as Attorney-in-Fact   
</TABLE>
    



                                       ix
<PAGE>   187

                                 EXHIBIT INDEX
   
<TABLE>
<CAPTION>
             EXHIBIT NO.                              DESCRIPTION                                                                  
             ----------                               -----------                                                                  
             <S>                                      <C>                                                                          
             2.1*                                     Agreement and Plan of Reorganization and Merger, dated as                    
                                                      of March 14, 1997, Lexington State Bank and Old North State                
                                                      Bank (included                                                               
                                                      as Appendix A to the Prospectus/Proxy Statement contained                    
                                                      in Part I).                                                                  
             5.1                                      Opinion of Hunton & Williams regarding the validity 
                                                      of the shares of common stock of LSB Bancshares, Inc.  to be 
                                                      issued in connection with the Merger.                                        
             8.1*                                     Form of opinion of Bell, Davis & Pitt, P.A. regarding the 
                                                      federal income tax consequences of the Merger.      
             13.1*                                    Old North State Bank Annual Report on Form 10-KSB,  as                       
                                                      amended, for the fiscal year ended December 31, 1996.                        
             13.2*                                    Old North State Bank Annual Report to Shareholders, as                       
                                                      amended, for the fiscal year ended December 31, 1996.                        
             13.3*                                    Old North State Bank 1997 Proxy Statement.
             13.4*                                    Old North State Bank Quarterly Report on Form  10-QSB for                    
                                                      the quarterly period ended March 31, 1997.                                   
             23.1*                                    Consent of Turlington and Company, L.L.P., independent                       
                                                      certified public accountants for LSB Bancshares, Inc.                        
             23.2*                                    Consent of Larrowe, Cardwell & Company, LC independent                       
                                                      certified public accounts for Old North State Bank.                          
             23.3                                     Consent of Hunton & Williams (included in Exhibit 5.1).                      
             23.4*                                    Consent of Bell, Davis & Pitt, P.A.                                          
             23.5                                     Consent of Scott & Stringfellow, Inc.                                        
             23.6                                     Consent of The Carson Medlin Company.                                        
             24.1*                                    Powers of Attorney  (included on the signature page                          
                                                      hereof)                                                                      
             99.1*                                    Form of proxy of Old North State Bank.                                       
             99.2*                                    Form of proxy of LSB Bancshares, Inc.                                        
             99.3*                                    Old North State Bank Current Report on Form 8-K  dated                       
                                                      March 21, 1997.                                                              
             99.4                                     Consent of Lloyd G. Walter, Jr. to be named as a person 
                                                      about to become a director.
             99.5                                     Consent of Marvin D. Gentry to be named as a person 
                                                      about to become a director.

</TABLE>
    

* Previously filed.




<PAGE>   1

                                                                     EXHIBIT 5.1

   
                              Hunton & Williams
                            One NationsBank Plaza
                            101 South Tryon Street
                                  Suite 2650
                       Charlotte, North Carolina 28280


                                 July 1, 1997
    


LSB Bancshares, Inc.
One LSB Plaza
Lexington, North Carolina  27292

Old North State Bank
161 South Stratford Road
Winston-Salem, North Carolina  27104

         Re: LSB Bancshares, Inc.
             Registration Statement on Form S-4 (File No. 333-27021)
             Proposed Merger of Old North State Bank with and into 
             Lexington State Bank

Gentlemen:

         We have acted as counsel for LSB Bancshares, Inc., a North Carolina
corporation ("LSB"), and Lexington State Bank, a North Carolina chartered bank
and a wholly-owned subsidiary of LSB ("LSB Bank"), in connection with the
proposed merger (the "Merger") of Old North State Bank, a North Carolina
chartered bank ("ONSB"), and the preparation of a Registration Statement on Form
S-4 filed with the Securities and Exchange Commission under the Securities Act
of 1933, as amended (the "Registration Statement"), relating to 1,826,350 shares
(subject to certain adjustments in the number of shares as provided in the
Merger Agreement defined below) of common stock of LSB, par value $5.00 per
share ("LSB Stock"), to be issued to the shareholders of ONSB upon consummation
of the Merger pursuant to a certain Agreement and Plan of Reorganization and
Merger dated as of March 17, 1997 among LSB, LSB Bank and ONSB, the form of
which has been filed as an Exhibit to the Registration Statement (the "Merger
Agreement").

         As counsel, we have examined and relied upon the originals, or copies
certified to our satisfaction, of the Merger Agreement and such other documents,
certificates and other instruments as in our judgment are necessary or
appropriate to enable us to render the opinions expressed below. As to any facts
material to our opinions expressed below, we have relied upon the
representations and warranties of the various parties in the Merger Agreement
and certificates of corporate officers of LSB and LSB Bank. In rendering the
opinions expressed below, we have assumed (i) the authenticity and conformity to
the original documents of all documents submitted to us as certified, conformed,
facsimile or photographic copies, and the genuineness of all 


<PAGE>   2

signatures on all documents, and (ii) the correctness and completeness of all
documents and certificates of all public officials.

         Based on the foregoing, we are of the opinion that the shares of LSB
Stock to be issued by LSB to the shareholders of ONSB pursuant to the Merger
Agreement have been duly authorized by all necessary corporate action, and, upon
issuance, following the consummation of the Merger in accordance with the terms
set forth in the Merger Agreement, will be validly issued, fully paid and
non-assessable.

         We consent of the filing of this opinion as an Exhibit to the
Registration Statement and to the reference to us under the caption "Opinions"
in the Prospectus and Joint Proxy Statement that forms a part of the
Registration Statement.

                                            Very truly yours,

   
                                            /s/ Hunton & Williams
    
                                            HUNTON & WILLIAMS



<PAGE>   1

                                                                EXHIBIT 23.5





   
                                June 19, 1997
    



Mr. David E. Johnston
Hunton & Williams
One NationsBank Plaza - Suite 2650
101 South Tryon Street
Charlotte, NC  28280

                                Re:     Old North State Bank/
                                        LSB Bancshares, Inc.

Dear Mr. Johnston:

   
                        CONSENT OF INVESTMENT BANKERS
                        -----------------------------

        We consent to the use, quotation and summarization in the Registration
Statement on Form S-4 of our Opinion of Fairness dated June 19, 1997,
rendered to the Board of Directors of Old North State in connection with its
merger with LSB Bancshares, Inc. and to the use of our name, and the statements
with respect to us, appearing in the Registration Statement.

                                                Sincerely,

                                                SCOTT & STRINGFELLOW, INC.

                                                /s/ G. Jacob Savage III
                                                -------------------------------
                                                G. Jacob Savage III, CFA
                                                Managing Director and First 
                                                Vice President
                                                Corporate Finance Department

    
 


<PAGE>   1
                                                                EXHIBIT 23.6



                     CONSENT OF THE CARSON MEDLIN COMPANY




   
We hereby consent to the inclusion as Appendix D to the Proxy Statement
constituting part of the Registration Statement on Form S-4 of LSB Bancshares,
Inc. of our letter to the Board of Directors of LSB Bancshares, Inc. and to the
references made to such letter and to the firm in such Proxy Statement.  In
giving such consent, we do not thereby admit that we come within the category
of persons whose consent is required under Section 7 of the Securities Act of
1933 or the rules and regulations of the Securities and Exchange Commission
thereunder.



                                                /s/ The Carson Medlin Co.

                                                THE CARSON MEDLIN COMPANY

Raleigh, North Carolina
June 27, 1997
    
 


<PAGE>   1

                                                                   EXHIBIT 99.4



                 Consent of Person About to Become A Director
     (pursuant to Rule 438 under the Securities Act of 1933, as amended)

     In connection with a Form S-4 filed by LSB Bancshares, Inc. with the
Securities and Exchange Commission (File No. 333-27021) (the "Registration
Statement"), I, Lloyd G. Walter, Jr., expect to be elected to the Board of
Directors of LSB Bancshares, Inc., as described therein. As of the effective
time of the Registration Statement, I will not be a member of the Board of
Directors of LSB Bancshares, Inc., and I am not required to sign the
Registration Statement.

     I hereby consent to being named in the Registration Statement as a future
member of LSB Bancshares, Inc.'s Board of Directors, and to the filing of the
Registration Statement as contemplated by LSB Bancshares, Inc.




6/29/97                                /s/ Lloyd G. Walter, Jr.
- -------------------------------        --------------------------------------
Date                                   Lloyd G. Walter, Jr.

<PAGE>   1

                                                                   EXHIBIT 99.5



                 Consent of Person About to Become A Director
     (pursuant to Rule 438 under the Securities Act of 1933, as amended)

     In connection with a Form S-4 filed by LSB Bancshares, Inc. with the
Securities and Exchange Commission (File No. 333-27021) (the "Registration
Statement"), I, Marvin D. Gentry, expect to be elected to the Board of
Directors of LSB Bancshares, Inc., as described therein. As of the effective
time of the Registration Statement, I will not be a member of the Board of
Directors of LSB Bancshares, Inc., and I am not required to sign the
Registration Statement.

     I hereby consent to being named in the Registration Statement as a future
member of LSB Bancshares, Inc.'s Board of Directors, and to the filing of the
Registration Statement as contemplated by LSB Bancshares, Inc.




6/29/97                                /s/ Marvin D. Gentry
- -------------------------------        --------------------------------------
Date                                   Marvin D. Gentry


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