HORIZON BANCORP INC /WV/
S-4, 1996-04-09
STATE COMMERCIAL BANKS
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<PAGE>   1



    As filed with the Securities and Exchange Commission on ________________
                                             Registration No. 33 ___________

_______________________________________________________________________________


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC  20549

                               __________________

                                    FORM S-4
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933

                               _________________

                             HORIZON BANCORP, INC.
             (Exact name of registrant as specified in its charter)

<TABLE>
<CAPTION>
<S>                                                <C>                                            <C>
        West Virginia                                          6711                                    55-063139
(State or other jurisdiction of                    (Primary Standard                              (I.R.S. Employer
incorporation or organization)                     Industrial Classification Code)                Identification No.)
</TABLE>


                                ONE PARK AVENUE
                         BECKLEY, WEST VIRGINIA  25802
                                 (304) 255-7000

         (Address and telephone number of principal executive offices)

                               _________________
 

FRANK S. HARKINS, JR.                                   COPY:  LYNN A. SMITH
HORIZON BANCORP, INC.                                   ROBINSON & MCELWEE
ONE PARK AVENUE                                         P.O. BOX 1791
BECKLEY, WV  25802                                      CHARLESTON, WV  25326
(304) 255-7000                                          (304) 347-8314
                       
                              _________________

           (Name, address and telephone number of agent for service)
                              _________________

            Approximate date of commencement of the proposed sale of
                           securities to the public:
  As soon as practicable after this Registration Statement becomes effective.

                        CALCULATION OF REGISTRATION FEE


<TABLE>
<CAPTION>

Title of Securities               Amount to          Proposed Maximum        Proposed Maximum         Amount of
to be registered                  be registered       offering price            aggregate           registration
                                                         per unit             offering price             fee

- ----------------------------------------------------------------------------------------------------------------
<S>                            <C>                   <C>                     <C>                  <C>  

Common Stock                   1,818,000             $18.51 (1)              $33,318,000 (1)      $11,489.00 (2)
                                Shares                                
- ----------------------------------------------------------------------------------------------------------------
</TABLE>
_______________

     1 Estimated solely for the purpose of calculating the registration fee in
accordance with Rule 457(f)(2) on the basis of the book value of the common
stock, par value $1.00 per share of Twentieth Bancorp, Inc. on  December 31,
1995 of $18.51 and the maximum of 1,800,000 shares of such stock to be exchanged
for 1,818,000 shares of Horizon Bancorp, Inc. stock.

       2 Calculated in accordance with Rule 457(f).

    The registrant hereby amends this registration statement on such date or
dates as may be necessary to delay its effective date 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 Section 8(a) may
determine.


<PAGE>   2

                             HORIZON BANCORP, INC.

CROSS REFERENCE SHEET PURSUANT TO RULE 501(6)

<TABLE>
<CAPTION>
FORM S-4                                                                                     SECTION CAPTION
ITEM NUMBER AND CAPTION                                                                      IN PROSPECTUS*
- -----------------------                                                                       ------------- 
<S>     <C>                                                                                    <C>
 1.     Forepart of Registration Statement and Outside Front Cover Page of
        Prospectus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      Cross-Reference Sheet;
                                                                                               Outside Front Cover Page;
                                                                                               Prospectus Page

 2.     Inside Front and Outside Back Cover Pages of Prospectus . . . . . . . . . . . . .      Available Information;
                                                                                               Incorporation of Certain
                                                                                               Documents By Reference; Table of
                                                                                               Contents

 3.     Risk Factors, Ratio of Earnings to Fixed Charges and Other
        Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      Summary; Risk Factors
                                                                                               Selected Financial
                                                                                               Information; Per Share Data;
                                                                                               Meeting of the Horizon
                                                                                               Shareholders; Meeting of the
                                                                                               Twentieth Shareholders

4.      Terms of the Transaction. . . . . . . . . . . . . . . . . . . . . . . . . . . . .      Summary; The Merger
                   

5.      Pro Forma Financial Information . . . . . . . . . . . . . . . . . . . . . . . . .      Pro Forma Financial
                                                                                               Information

6.      Material Contracts with the Company Being Acquired. . . . . . . . . . . . . . . .      The Merger
                 

7.      Additional Information Required for Reoffering by Persons and
        Parties Deemed to Be Underwriters . . . . . . . . . . . . . . . . . . . . . . . .      Not Applicable


8.      Interests of Named Experts and Counsel  . . . . . . . . . . . . . . . . . . . . .      Experts


9.      Disclosure of Commission Position on Indemnification for
        Securities Act Liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . .      PART II - Indemnification of
                                                                                               Directors and Officers


</TABLE>
<PAGE>   3
<TABLE>
<CAPTION>
FORM S-4                                                                                     SECTION CAPTION
ITEM NUMBER AND CAPTION                                                                      IN PROSPECTUS*
- -----------------------                                                                       ------------- 
<S>     <C>                                                                                    <C>

10.     Information with Respect to S-3 Registrants  . . . . . . . . . . . . . . . . . .       Not Applicable


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


12.     Information with Respect to S-2 or S-3 Registrants  . . . . . . . . . . . . . . .      Information About Horizon
                                                                                               Bancorp, Inc.; Incorporation of
                                                                                               Certain Documents by
                                                                                               Reference

13.     Incorporation of Certain Information by Reference  . . . . . . . . . . . . . . . .     Incorporation of Certain
                                                                                               Documents By Reference

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


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


16.     Information with Respect to S-2 or S-3 Companies  . . . . . . . . . . . . . . . . .    Information About Twentieth
                                                                                               Bancorp, Inc.; Incorporation of
                                                                                               Certain Documents By
                                                                                               Reference


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


18.     Information if Proxies, Consents or Authorizations are to be
        Solicited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   General Information;
                                                                                               Meeting of The Twentieth
                                                                                               Shareholders; Meeting of
                                                                                               The Horizon Shareholders;
                                                                                               The Merger; Incorporation of
                                                                                               Certain Documents By
                                                                                               Reference


19.     Information if Proxies, Consents or Authorizations are Not to be
        Solicited or in an Exchange Offer  . . . . . . . . . . . . . . . . . . . . . . . . .   Not Applicable


20.     Indemnification of Directors and Officers . . . . . . . . . . . . . . . . . . . . . .  PART II - Indemnification of
                                                                                               Directors and Officers
</TABLE>

<PAGE>   4
<TABLE>
<CAPTION>
FORM S-4                                                                                     SECTION CAPTION
ITEM NUMBER AND CAPTION                                                                      IN PROSPECTUS*
- -----------------------                                                                       ------------- 
<S>     <C>                                                                                    <C>

21.     Exhibits and Financial Statement Schedules. . . . . . . . . . . . . . . . . . . .      Exhibit Index

22.     Undertakings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      PART II - Undertakings

<FN>

* This Registration Statement on Form S-4 contains a prospectus/joint proxy
  statement to be sent to the shareholders of the company the Registrant 
  proposes to acquire via merger, Twentieth Bancorp, Inc., as well as to 
  Registrant's shareholders in connection with their vote on the merger.
</TABLE>
<PAGE>   5

                      [TO BE PLACED ON HORIZON LETTERHEAD]


                            _________________, 1996


Dear Shareholders:

     You are cordially invited to attend the Annual Meeting of Shareholders (the
"Annual Meeting") of Horizon Bancorp, Inc. ("Horizon" or "Company") which will
be held on Wednesday, August 14, 1996, at 4:00 p.m., local time, The Greenbrier,
White Sulphur Springs, West Virginia.  At the Annual Meeting, the shareholders
will elect a Board of Directors ("Board") and be asked to approve the
appointment of the Company's independent auditors for 1996.

     In addition to these routine matters, the shareholders will also be asked
to consider and vote upon two other matters.  The first is a proposal to
increase the authorized capital stock of the Company from 5,000,000 shares, par
value $1.00, to 20,000,000 shares, par value $1.00.  The increase in the
authorized capital stock is necessary so that the Company will have a sufficient
number of authorized but unissued shares so that it may consider additional
acquisitions in the future and other appropriate purposes.  Your Board
recommends that you vote "FOR" the charter amendment.

     The second matter is the proposed merger of  Twentieth Bancorp, Inc.
("Twentieth") with and into Horizon (the "Merger") in accordance with the terms
and conditions of the Plan of Merger and Reorganization by and between Twentieth
and Horizon dated February 6, 1996 (the "Merger Agreement").  As a result of the
proposed Merger, the separate corporate existence of Twentieth shall cease and
Twentieth's wholly-owned banking subsidiary, The Twentieth Street Bank, shall
operate as a wholly-owned banking subsidiary of Horizon. Approval of the Merger
requires the affirmative vote of the holders of a majority of the outstanding
shares of Horizon's common stock entitled to vote at the Annual Meeting.

     In connection with the proposed Merger, please be advised that your Board
of Directors has received the written opinion of  The Robinson-Humphrey
Company, Inc., an investment banking firm, ("Robinson-Humphrey"), that the terms
of the proposed Merger are fair to Horizon's shareholders from a financial point
of view.  Your Board of Directors believes that the proposed Merger is in the
best interest of Horizon and its shareholders.  After consideration of certain
rules governing companies such as Horizon that are listed on the Nasdaq
exchange, the Merger was structured as a merger of the two bank holding
companies.  Under the laws of the State of West Virginia, such a merger requires
the affirmative vote of the holders of a majority of the outstanding shares of
common stock of both Horizon and Twentieth.  Your Board recommends that you vote
"FOR" the Merger. Detailed information about the proposed Merger (including the
Robinson-Humphrey opinion and your Board's recommendation), and the other
proposals to come before the shareholders at the Annual Meeting is set forth in
the Prospectus/Joint Proxy Statement.

<PAGE>   6

     In addition to the proxy and the Prospectus/Joint Proxy Statement enclosed
herein, we have also enclosed a copy of Horizon's 1995 Annual Report and Form
10-K for the year ended December 31, 1995 and a copy of Twentieth's Form 10-K
for the year ended December 31, 1995.  The Horizon Annual Report and both of the
Form 10-Ks are incorporated by reference into the Prospectus/Joint Proxy
Statement.  If your envelope does not contain any of these documents, please
contact Abigail Scott, Senior Vice President, Bank of Raleigh, at One Park
Avenue, P. O. Drawer D, Beckley, West Virginia 25802, telephone number
304-255-7000, immediately.

     I hope you will attend the Annual Meeting.  Regardless of your plans to
attend, I urge you to execute and mail the enclosed proxy in the envelope
provided.  If you decide to attend the meeting, you may withdraw your proxy and
vote in person on all matters brought before it.


                                          Sincerely,
<PAGE>   7
                     [TO BE PLACED ON TWENTIETH LETTERHEAD]


                           ___________________, 1996


Dear Shareholders:

     You are cordially invited to attend a special meeting of Shareholders (the
"Special Meeting") of Twentieth Bancorp, Inc. ("Twentieth") which will be held
on Tuesday, August 13, 1996, at _______ ___.m., local time, in the Third Floor
Auditorium of The Twentieth Street Bank, 1900 Third Avenue, Huntington, West
Virginia.  At the Special Meeting, the shareholders will be requested to approve
the proposed merger of  Twentieth with and into Horizon Bancorp, Inc.
("Horizon") in accordance with the terms and conditions of the Plan of Merger
and Reorganization by and between Twentieth and Horizon dated February 6, 1996
(the "Merger Agreement").   As a result of the Merger, the separate corporate
existence of Twentieth shall cease and Twentieth's wholly-owned banking
subsidiary, The Twentieth Street Bank, shall operate as a wholly-owned banking
subsidiary of Horizon.  Approval of the Merger requires the affirmative vote of
the holders of a majority of the outstanding shares of Twentieth's common stock
entitled to vote at the Special Meeting.

     Upon consummation of the Merger, each Twentieth shareholder who does not
dissent from the Merger will be entitled to receive, subject to adjustment as
described in the Prospectus/Joint Proxy Statement, 1.01 shares of  common stock
of Horizon for each share of Twentieth stock held.  No fractional shares of
Horizon stock will be issued.  Rather, Horizon will pay cash for any fractional
shares at a price based upon the market value of the shares as more fully set
forth in the Merger Agreement.

     Your Board of Directors has received the written opinion of Baxter Fentriss
and Company, an investment banking firm, ("Baxter Fentriss"), that the terms of
the proposed Merger are fair to Twentieth's shareholders from a financial point
of view.  Your Board of Directors believes that the proposed Merger is in the
best interest of Twentieth and its shareholders.  Your Board recommends that you
vote "FOR" the Merger.  Detailed information about the proposed Merger
(including the Baxter Fentriss opinion and your Board's recommendation), is set
forth in the Prospectus/Joint Proxy Statement.

     In addition to the proxy and the Prospectus/Joint Proxy Statement enclosed
herein, we have also enclosed a copy of Horizon's 1995 Annual Report and Form
10-K for the year ended December 31, 1995 and a copy of Twentieth's Form 10-K
for the year ended December 31, 1995.  The Horizon Annual Report and both of the
Form 10-Ks are incorporated by reference into the Prospectus/Joint Proxy
Statement.  If your envelope does not contain any of these documents, please
contact B. C. McGinnis, III, President, Twentieth Bancorp, Inc. at 1900 Third
Avenue, P. O. Box 5527, Huntington, West Virginia 25703-0527, telephone number
304-526-6200, immediately.
<PAGE>   8
     I hope you will attend the Special Meeting.  Regardless of your plans to
attend, I urge you to execute and mail the enclosed proxy in the envelope
provided.  If you decide to attend the meeting, you may withdraw your proxy and
vote in person on all matters brought before it.

                                          Sincerely,
<PAGE>   9
                             HORIZON BANCORP, INC.

                                One Park Avenue
                          Beckley, West Virginia 25802
                                  304-255-7000


                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
                           TO BE HELD AUGUST 14, 1996


     NOTICE IS HEREBY GIVEN that the Annual Meeting of Shareholders (the "Annual
Meeting") of Horizon Bancorp, Inc. ("Horizon") will be held at The Greenbrier,
White Sulphur Springs, West Virginia, on Wednesday, August 14, 1996, at 4:00
p.m., local time, for the purpose of considering and voting upon the following
matters:

     1. The election of  a Board of  eighteen (18) Directors of Horizon Bancorp,
Inc., to serve until the next annual meeting of shareholders or until their
respective successors are elected and qualified;

     2. A proposal to amend the Articles of Incorporation for Horizon Bancorp,
Inc. by increasing the authorized capital stock from $5,000,000 being 5,000,000
shares of the par value of $1.00 each, to $20,000,000 being 20,000,000 shares of
the par value of $1.00 each;

     3. A proposal to approve the appointment by the Board of Directors of Ernst
& Young LLP as Independent Auditors for the year 1996;

     4. A proposal to approve and ratify the proposed merger of  Twentieth
Bancorp, Inc. ("Twentieth") with and into Horizon in accordance with the terms
and conditions of the Plan of Merger and Reorganization by and between Twentieth
and Horizon dated February 6, 1996 (the "Merger Agreement"); and

     5. Such other matters as may properly come before the meeting or any
adjournment thereof.

     Only those shareholders of record at the close of business on ___________,
1996 shall be entitled to notice of the meeting and to vote at the meeting and
any adjournments or postponements thereof.

     Your proxy is solicited by the Board of Directors of Horizon who recommend
that you vote in favor of the management nominees as directors, and in favor of
proposals 2, 3, and 4.  Even if you plan to attend the meeting in person, you
are urged to sign, date and return the enclosed proxy promptly in the enclosed
addressed envelope which requires no postage.  If you attend the Annual Meeting
in person, you may withdraw your proxy and vote in person. Your proxy may also
be
<PAGE>   10
revoked at any time prior to the meeting in the manner described in the
enclosed Prospectus/Joint Proxy Statement.  PROPERLY COMPLETED PROXIES WILL BE
VOTED IN ACCORDANCE WITH THE INSTRUCTIONS INDICATED THEREON; OR IF NO
INSTRUCTIONS ARE GIVEN, "FOR" THE ELECTION OF MANAGEMENT NOMINEES AS DIRECTORS
AND "FOR" APPROVAL OF PROPOSALS 2, 3 AND 4 ABOVE.


                                  By Order of the Board of Directors,
                                  Frank S. Harkins, Jr.
                                  Chairman of the Board

                                  Philip L. McLaughlin
                                  President and Chief Executive Officer

PLEASE SIGN, DATE AND RETURN THE ENCLOSED PROXY CARD AS PROMPTLY AS POSSIBLE
WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING.  IF YOU PLAN TO ATTEND THE
MEETING, PLEASE CHECK THE APPROPRIATE BOX ON THE PROXY CARD INDICATING THE
NUMBER OF PERSONS WHO WILL ATTEND.  THE MEETING WILL BEGIN PROMPTLY AT 4:00
P.M., AND A SHAREHOLDERS' RECEPTION WILL BE HELD FOLLOWING THE MEETING.
<PAGE>   11
                            TWENTIETH BANCORP, INC.

                               1900 Third Avenue
                           Huntington, West Virginia
                                 304-526-6200

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                           TO BE HELD AUGUST 13, 1996


     NOTICE IS HEREBY GIVEN that a Special Meeting of Shareholders (the "Special
Meeting") of Twentieth Bancorp, Inc. ("Twentieth") will be held in the Third
Floor Auditorium of The Twentieth Street Bank, Huntington, West Virginia, on
Tuesday, August 13, 1996, at ______ ___.m., local time, for the purpose of
considering and voting upon the following matters:

     1. A proposal to approve and ratify the proposed merger of  Twentieth
Bancorp, Inc. ("Twentieth") with and into Horizon in accordance with the terms
and conditions of the Plan of Merger and Reorganization by and between Twentieth
and Horizon dated February 6, 1996 (the "Merger Agreement"), pursuant to which
Twentieth will merge with and into Horizon, thereby rendering Twentieth's
wholly-owned banking subsidiary, The Twentieth Street Bank, a wholly-owned
banking subsidiary of Horizon.  As a result of the Merger, if consummated, each
outstanding share of Twentieth's common stock will be converted into the right
to receive, subject to adjustment as described in the Merger Agreement, 1.01
shares of Horizon common stock.  The Merger Agreement is attached to the
accompanying Prospectus/Joint Proxy Statement as Appendix I.

     2. Such other matters as may properly come before the meeting or any
adjournment thereof.

     Only those shareholders of record at the close of business on
________________, 1996 are entitled to receive notice of and to vote at the
Special Meeting and any adjournments or postponements thereof.

     Your proxy is solicited by the Board of Directors of Twentieth who
recommends you vote in favor of proposal 1 above.  Even if you plan to attend
the meeting in person, you are urged to sign, date and return the enclosed proxy
promptly in the enclosed addressed envelope which requires no postage.  If you
attend the Special Meeting in person, you may withdraw your proxy and vote in
person. Your proxy may also be revoked at any time prior to the meeting in the
manner described in the enclosed Prospectus/Joint Proxy Statement.  PROPERLY
COMPLETED PROXIES WILL BE VOTED IN ACCORDANCE WITH THE INSTRUCTIONS INDICATED
THEREON; OR IF NO INSTRUCTIONS ARE GIVEN, "FOR" APPROVAL OF PROPOSAL 1 ABOVE.

                                 By Order of the Board of Directors
<PAGE>   12

                        PROSPECTUS/JOINT PROXY STATEMENT

                             HORIZON BANCORP, INC.

                        1,818,000 SHARES OF COMMON STOCK


     Horizon Bancorp, Inc. ("Horizon") hereby offers up to 1,818,000 shares, in
the aggregate, of its common stock, $1.00 par value to the shareholders of
Twentieth Bancorp, Inc.,  ("Twentieth").  Under the terms of the Plan of Merger
and Reorganization between Horizon and Twentieth, shareholders of Twentieth who
do not dissent from the Merger will, upon consummation of the transaction
contemplated therein, receive 1.01 shares of Horizon common stock for each share
of Twentieth common stock they own, subject, however, to adjustment, as set
forth in this Prospectus/Joint Proxy Statement.  Horizon will not issue
fractional shares and in lieu thereof the Twentieth shareholders will receive
cash as provided for in the Plan of Merger and Reorganization.  Horizon and
Twentieth have only one class of stock, common stock, and all references to
"stock" of either company in this Prospectus/Joint Proxy Statement are
references to the respective company's common stock.

     Information concerning the proposed transaction is contained in the
following Joint Proxy Statement which is also a prospectus with regard to the
Twentieth shareholders.  The date of this Prospectus/Joint Proxy Statement is
_______________________, 1996.

     THERE ARE RISKS ASSOCIATED WITH THE ACQUISITION OF THE HORIZON SECURITIES
OFFERED HEREIN.  SEE, RISK FACTORS.

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


                                       i
<PAGE>   13
                             AVAILABLE INFORMATION

     This Prospectus/Joint Proxy Statement constitutes part of the Registration
Statement on Form S-4 of Horizon including exhibits and amendments thereto (the
"Registration Statement"), filed with the Securities and Exchange Commission
("SEC") under the Securities Act of 1933, as amended (the "Securities Act"), in
connection with the Merger described herein.  This Prospectus/Joint Proxy
Statement does not contain all of the information set forth in the Registration
Statement, certain portions of which have been omitted pursuant to the rules and
regulations of the SEC.  Copies of the Registration Statement can be obtained
from the SEC at prescribed rates by addressing written requests for such copies
to the Public Reference Section of the SEC, 450 Fifth Street, N. W., Room 1024,
Washington, D.C. 20549.  In addition, the Registration Statement may be
inspected and copied at the public reference facilities referred to above and at
the SEC's regional offices at 7 World Trade Center, Suite 1300, New York, New
York 10048 and Northwestern Atrium Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661.

     The common stock of Horizon Bancorp, Inc. is traded on the Nasdaq National
Market under the symbol "HZWV".  Reports, proxy statements and other information
for Horizon can also be inspected at the offices of Nasdaq Operations, 1735 K
Street, N.W., Washington, D.C. 2006.

     Horizon and Twentieth are subject to the informational requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, in
accordance therewith, file reports, proxy statements and other information with
the SEC.  Such reports, proxy statements and other information filed by Horizon
and by Twentieth may be inspected without charge and copies may be obtained at
prescribed rates from the SEC offices set forth above.

     All information contained or incorporated by reference in this
Prospectus/Joint Proxy Statement with respect to Horizon was supplied by
Horizon, and all information contained or incorporated herein by reference in
this Prospectus/Joint Proxy Statement with respect to Twentieth was supplied by
Twentieth.

     No person or entity has been authorized to give any information or to make
any representation not contained in this Prospectus/Joint Proxy Statement in
connection with the offering made hereby, and, if given or made, any such other
information or representation must not be relied upon as having been authorized
by Horizon or Twentieth.  This Prospectus/Joint Proxy Statement does not
constitute an offer to sell, or a solicitation of an offer to buy, any of the
securities offered hereby, or any other securities, to any person in any
jurisdiction in which such offer or solicitation is not authorized or in which
the person making such offer or solicitation is not authorized to do so, or to
any person to whom it is unlawful to make such offer or solicitation in such
jurisdiction.  Neither the delivery of this Prospectus/Joint Proxy Statement nor
any sale hereunder shall under any circumstances create any implication that
there has been no change in the affairs of Horizon or Twentieth or their
respective subsidiaries since any of the dates as of which information is
furnished herein or since the date hereof.


                                       ii
<PAGE>   14
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

     The following documents are incorporated herein by reference in this
Prospectus/Joint Proxy Statement: (i) Horizon's Annual Report on Form 10-K for
the year ended December 31, 1995; and (ii) Twentieth's Annual Report on Form
10-K for the year ended December 31, 1995.  Both documents were filed with the
SEC pursuant to Section 13 of the Exchange Act.

     In addition, all documents filed by Horizon or Twentieth pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date hereof
and prior to the time of the completion of the offering are hereby deemed to be
incorporated by reference.  Any statements contained in a document incorporated
or deemed to be incorporated by reference herein shall be deemed to be modified
or superseded for purposes of this Prospectus/Joint Proxy Statement to the
extent that a statement contained herein or in any other 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, except as so modified or superseded, to
constitute a part of this Prospectus/Joint Proxy Statement.

     THIS PROSPECTUS/JOINT PROXY STATEMENT INCORPORATES DOCUMENTS RELATING TO
HORIZON AND TO TWENTIETH BY REFERENCE WHICH ARE NOT PRESENTED HEREIN OR
DELIVERED HEREWITH.  THOSE DOCUMENTS, INCLUDING EXHIBITS WHICH ARE SPECIFICALLY
INCORPORATED BY REFERENCE INTO THOSE DOCUMENTS, BUT EXCLUDING EXHIBITS NOT
SPECIFICALLY INCORPORATED BY REFERENCE IN THOSE DOCUMENTS, ARE AVAILABLE UPON
REQUEST.  ANY REQUEST FOR A DOCUMENT RELATING TO HORIZON SHOULD BE DIRECTED TO
ABIGAIL SCOTT, HORIZON BANCORP, INC., ONE PARK AVENUE, BOX D, BECKLEY, WEST
VIRGINIA 25802.  ANY REQUEST FOR A DOCUMENT RELATING TO TWENTIETH SHOULD BE
DIRECTED TO B. C. MCGINNIS, III, TWENTIETH BANCORP, INC., 1900 THIRD AVENUE, BOX
5527, HUNTINGTON, WEST VIRGINIA 25703.  IN ORDER TO ENSURE TIMELY DELIVERY OF
THE DOCUMENTS BEFORE THE SHAREHOLDER MEETINGS, ANY SUCH REQUEST SHOULD BE MADE
BY AUGUST 5, 1996.

     The documents are available without charge, but persons requesting copies
of exhibits to such documents which are specifically incorporated by reference
in such documents will be charged the costs of reproduction and mailing.

     THE ANNUAL REPORT TO SHAREHOLDERS FOR HORIZON FOR THE YEAR ENDED DECEMBER
31, 1995, HORIZON'S FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1995,  AND
TWENTIETH'S FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1995 ACCOMPANIES THIS
PROSPECTUS/JOINT PROXY STATEMENT.


                                      iii
<PAGE>   15
                               TABLE OF CONTENTS
HEADING                                                                   PAGE
- -------                                                                   ----
GENERAL INFORMATION

MEETING OF THE TWENTIETH SHAREHOLDERS

 Purpose of Meeting.....................................................
 Other Business ........................................................
 Outstanding Shares and Voting Rights...................................
 Solicitation of Proxies................................................

MEETING OF THE HORIZON SHAREHOLDERS

 Purpose of Meeting.....................................................
 Election of Directors .................................................
 Approval of Auditors ..................................................
 Charter Amendment......................................................
 The Merger Agreement ..................................................
 Other Business.........................................................
 Shares and Voting Rights...............................................
 Solicitation of Proxies ...............................................

SUMMARY

 Horizon................................................................
 Twentieth..............................................................
 The Merger.............................................................
 Effective Time.........................................................
 Exchange Ratio.........................................................
 Adjustment of Exchange Ratio...........................................
 Opinion of Twentieth's Financial Advisor...............................
 Opinion of Horizon's Financial Advisor.................................
 Interest of Certain Persons in the Merger..............................
 Dissenters' Rights.....................................................
 Certain Federal Income Tax Consequences................................
 Resales by Affiliates..................................................
 Market Prices and Dividends............................................
 Comparison of Shareholders' Rights.....................................
 Reasons for the Merger.................................................
 Accounting Treatment...................................................
 Conditional Stock Option Agreement.....................................


                                       1
<PAGE>   16

RISK FACTORS

SELECTED FINANCIAL INFORMATION

 Horizon.................................................................
 Twentieth...............................................................

PER SHARE DATA

THE MERGER

 Background and Reasons for the Merger...................................
 Opinion of Baxter Fentriss..............................................
 Opinion of Robinson-Humphrey............................................
 General Description of the Terms of the Merger Agreement................
 Exchange Ratio..........................................................
 Adjustment of Exchange Ratio............................................
 Fractional Shares.......................................................
 Exchange of Twentieth Stock Certificates................................
 Lost Certificates.......................................................
 Conditions to Consummation..............................................
 Termination.............................................................
 Amendment...............................................................
 Conduct of Twentieth's Business Prior to Effective Time.................
 Regulatory Considerations...............................................
 Employment Contracts....................................................
 Directors of Twentieth Street Bank......................................
 Directors of Horizon ...................................................
 Restrictions on Resales by Affiliates...................................
 Certain Federal Income Tax Consequences.................................
 Accounting Treatment....................................................
 Dissenter's Rights......................................................
 Conditional Stock Option Agreement......................................

PRO FORMA FINANCIAL INFORMATION

INFORMATION ABOUT HORIZON BANCORP, INC.

 General Information.....................................................
 Bank of Raleigh.........................................................
 The National Bank of Summers of Hinton..................................
 Greenbrier Valley National Bank.........................................
 First National Bank in Marlinton........................................


                                       2
<PAGE>   17
 Committees of the Horizon Board of Directors..............................
 Compliance With Section 16(a) of the Securities Exchange Act of 1934......
 Legal Proceedings.........................................................
 Voting Rights and Required Vote...........................................
 Additional Information....................................................

INFORMATION ABOUT TWENTIETH BANCORP, INC.

 General Information.......................................................
 The Twentieth Street Bank.................................................
 Regulatory Matters........................................................
 Legal Proceedings.........................................................
 Additional Information....................................................

MARKET PRICES AND DIVIDENDS

SUPERVISION, REGULATION AND GOVERNMENTAL POLICY

 Bank Holding Company Regulation...........................................
 Bank Regulation...........................................................
 Capital Requirements......................................................
 Recent Banking Legislation................................................
 Enforcement Powers........................................................
 Possible Legislative Changes..............................................
 Effect of Governmental Policies...........................................

CAPITAL STOCK OF HORIZON

 Voting Rights ............................................................
 Dividend Rights...........................................................
 Preemptive Rights.........................................................
 Assessment and Redemption.................................................
 Liquidation Rights........................................................

CERTAIN DIFFERENCES IN THE RIGHTS OF HOLDERS OF TWENTIETH STOCK    
AND HORIZON STOCK

OPINIONS

EXPERTS

 Appendices:


                                       3
<PAGE>   18


I.    Plan of Merger and Reorganization .................................

II.   Opinion of Baxter Fentriss and Company dated
        February 6, 1996.................................................
      Opinion of Robinson-Humphrey Company dated
        February 6, 1996. ...............................................

III.  Sections 31-1-122 and 31-1-123 of the Code of
        West Virginia of 1931, as amended, concerning
        dissenters' rights...............................................


                                       4
<PAGE>   19
                        PROSPECTUS/JOINT PROXY STATEMENT

HORIZON BANCORP, INC.                               TWENTIETH BANCORP, INC.
One Park Avenue                                     1900 Third Avenue
Beckley, W. Va. 25802                               Huntington, W. Va. 25703
304-255-7000                                        304-526-6200

Meeting of the Shareholders of Horizon Bancorp, Inc. to be held August 14,
1996.

Meeting of the Shareholders of Twentieth Bancorp, Inc. to be held August 13,
1996.


                              GENERAL INFORMATION

     This Prospectus/Joint Proxy Statement is being furnished in connection with
two shareholders' meetings.  It is being furnished by Horizon Bancorp, Inc.
("Horizon") to its shareholders in connection with the solicitation of proxies
by the Board of Directors of Horizon for the annual shareholders' meeting to be
held at 4:00 p.m., local time, on August 14, 1996 at The Greenbrier, White
Sulphur Springs, West Virginia ("Horizon Shareholders' Meeting").  At that
meeting, the shareholders of Horizon will elect directors and consider and vote
upon proposals to (i) approve Ernst & Young LLP as Horizon's independent
auditors, (ii) to amend Horizon's Articles of Incorporation by increasing
Horizon's authorized capital stock (the "Charter Amendment"), and (iii) to
approve a Plan of Merger and Reorganization dated February 6, 1996 by and
between Horizon and Twentieth Bancorp, Inc. (the "Merger Agreement"). The Merger
Agreement provides that Twentieth Bancorp, Inc. will be merged with and into
Horizon (the "Merger").  As a result of the Merger, Horizon will continue as the
surviving bank holding company and Twentieth Bancorp, Inc. will cease to exist
as a separate entity.  As a result of the Merger, The Twentieth Street Bank
("Twentieth Street Bank") will become a wholly owned subsidiary of Horizon. The
Charter Amendment will increase Horizon's authorized capital stock from
$5,000,000  divided into 5,000,000 shares of the par value of $1.00 per share,
to $20,000,000 divided into 20,000,000 shares of the par value of $1.00 per
share.

     This Prospectus/Joint Proxy Statement is also being furnished by Twentieth
Bancorp, Inc. ("Twentieth") to its shareholders in connection with the
solicitation of proxies by the Board of Directors of  Twentieth for the special
shareholders' meeting to be held at _________________, local time, on August 13,
1996 in the Third Floor Auditorium of The Twentieth Street Bank, 1900 Third
Avenue, Huntington, West Virginia ("Twentieth Shareholders' Meeting").  At that
meeting, the shareholders of Twentieth will be asked to consider and vote upon a
proposal to approve the Merger Agreement.  As stated above, the Merger Agreement
provides that Twentieth will be merged with and into Horizon and Twentieth will
cease to exist as a separate entity.  Shareholders of Twentieth who do not
dissent from the Merger will receive 1.01 shares of Horizon common stock for
each share of Twentieth common stock they own subject to possible adjustment in
the event Horizon stock increases or decreases in value by more than fifteen
percent (15%) during the ten (10) days prior to consummation


                                       5
<PAGE>   20
of the transaction.   No fractional shares of Horizon common stock will be
issued.  In lieu of issuing fractional shares, Twentieth shareholders will
receive the cash value of the fractional share calculated in accordance with the
Merger Agreement.

     Consummation of the Merger is conditioned, among other things, on receipt
of the approval of the holders of a majority of the issued and outstanding stock
of Horizon and of Twentieth.  As of December 31, 1995, the directors and
executive officers of Horizon beneficially owned 13.63% of the issued and
outstanding stock of Horizon and it is anticipated that all such shares of stock
will be voted to approve the Merger.  As of December 31, 1995, the directors and
executive officers of Twentieth beneficially owned 16.73% of the issued and
outstanding stock of Twentieth and it is anticipated that all such shares of
stock will be voted to approve the Merger.  ALL SHAREHOLDERS SHOULD REVIEW THIS
PROSPECTUS/JOINT PROXY STATEMENT CAREFULLY, INCLUDING ALL EXHIBITS HERETO.


                     MEETING OF THE TWENTIETH SHAREHOLDERS

PURPOSE OF MEETING

     The purpose of the meeting of the Twentieth shareholders is to consider and
vote upon a proposal to approve the Merger Agreement pursuant to which Twentieth
will merge with and into Horizon.  THE BOARD OF DIRECTORS OF TWENTIETH HAS
APPROVED THE MERGER AGREEMENT AND RECOMMENDS THAT TWENTIETH SHAREHOLDERS VOTE
"FOR" THE PROPOSAL.  The Board of Directors of Twentieth believe the Merger
should improve the liquidity of the shares held by the Twentieth shareholders.
In addition, Horizon has similar management philosophies and commitment to
community as Twentieth. Twentieth shareholders who do not dissent from the
Merger will receive 1.01 shares of Horizon common stock for each share of
Twentieth common stock which they own; provided, however, that if the average
closing price for Horizon common stock over the ten days prior to the Effective
Time (as that term is defined in the Merger Agreement) is more than $46.00 per
share, or less than $34.00 per share then an adjustment to the exchange ratio of
1.01 will be made or the Merger Agreement will terminate. Assuming no
shareholder of either Horizon or Twentieth dissents from the Merger, and
assuming no adjustment in the exchange ratio, after the Merger, the existing
shareholders of Horizon will own collectively approximately 60.89% of the
outstanding Horizon stock and the present shareholders of Twentieth will own
collectively approximately 39.11% of the outstanding Horizon stock.

OTHER BUSINESS

     The Board of Directors of Twentieth knows of no further business to be
presented at the Twentieth Shareholders' Meeting; but if any further business
properly comes before the meeting, the persons named in the enclosed proxy will
vote all proxies in accordance with the recommendations of Twentieth's Board of
Directors.


                                       6
<PAGE>   21
OUTSTANDING SHARES AND VOTING RIGHTS

     As of February, 1, 1996, there were 1,800,000 shares of Twentieth stock
issued and outstanding.  Only shareholders of record as of the close of business
on ________________, 1996 are entitled to notice of, and to vote on matters, at
the Twentieth Shareholders' Meeting.

     In order for the Merger to be approved by the shareholders of Twentieth,
holders of a majority of the issued and outstanding shares of Twentieth stock,
or 900,001 shares, must vote to approve the Merger.  As indicated above, the
directors and executive officers of Twentieth beneficially own 16.73% of the
issued and outstanding stock of Twentieth and it is anticipated that all such
shares of stock will be voted to approve the Merger.

SOLICITATION OF PROXIES

     The accompanying Twentieth proxy is solicited by and on behalf of the Board
of Directors of Twentieth.  All expenses of preparing, printing and mailing the
proxy, the proxy statement and other materials used in solicitation thereof will
be paid fifty percent (50%) by Twentieth and fifty percent (50%) by Horizon.  In
addition to the use of the mails, proxies may be solicited to a limited extent
by personal interview and telephone by directors, officers and regular employees
of Twentieth, none of whom will receive additional compensation for such
services.  Twentieth may also request brokerage houses, custodians and nominees
to forward soliciting materials to the beneficial owners of stock which such
persons hold of record.  Twentieth and Horizon will pay the reasonable expenses
of such persons for forwarding such materials.

     This Prospectus/Joint Proxy Statement is being mailed to Twentieth
shareholders on or about _____________________, 1996.


                      MEETING OF THE HORIZON SHAREHOLDERS

PURPOSE OF MEETING

     The Horizon Shareholders' Meeting is the annual meeting of shareholders of
Horizon Bancorp, Inc.  At the Horizon Shareholders' Meeting the Horizon
shareholders will elect directors and be asked to approve the appointment of
Ernst & Young LLP as independent auditors for Horizon for the year 1996.  In
addition to these routine matters, at the Horizon Shareholders' Meeting the
Horizon shareholders will be asked to consider and vote upon proposals to
approve the Charter Amendment and to approve the Merger Agreement.

ELECTION OF DIRECTORS

     The bylaws of Horizon provide that the Board of Directors shall consist of
not fewer than five (5) and no more than thirty (30) individuals, as fixed and
determined, from time to time, by the Horizon Board of Directors.  The Board of
Directors has fixed the number of directors to be elected at the Horizon
Shareholders' Meeting and to constitute the Board of Directors of Horizon at
eighteen (18).


                                       7
<PAGE>   22

     The bylaws of Horizon provide for cumulative voting rights for election of
directors.  At each election for directors, shareholders entitled to vote shall
have the right to vote, in person or by proxy, the number of shares owned by
them for as many persons as there are directors to be elected, or to accumulate
their vote by giving one candidate as many votes as the number of such directors
multiplied by the number of their shares shall equal, or by distributing such
votes on the same principle among any number of such candidates.  If any shares
are voted cumulatively for the election of directors, the proxies unless
otherwise directed, will have full discretion and authority to accumulate their
votes and vote for less than all such nominees.

     To be eligible for nomination and election at an annual meeting, no
director shall have attained the age of seventy (70) years as of the date of the
meeting.  All persons who management for Horizon will nominate for election at
the Horizon Shareholders' Meeting as set forth below satisfy this requirement. A
director need not be a resident of the State of West Virginia.

     The bylaws of Horizon provide that nominations, other than those made by or
on behalf of existing management of Horizon, shall be made in writing and shall
be delivered or mailed to the Chairman or President of Horizon, not less than
fourteen (14) days nor more than fifty (50) days prior to the meeting of
shareholders.  If less than twenty-one (21) days' notice of the meeting is given
to shareholders, such nominations shall be mailed or delivered to the Chairman
or President of Horizon no later than the close of business on the seventh (7th)
day following the day on which the notice of meeting was mailed. Such
notification shall contain the following information to the extent known to the
notifying shareholder: (a) the name and address of each proposed nominee; (b)
the principal occupation of each proposed nominee; (c) the total number of
shares of capital stock of Horizon that will be voted for each proposed nominee;
(d) the name and residence address of the notifying shareholder; and (e) the
number of shares of capital stock of Horizon owned by the notifying shareholder.
Nominations not made in accordance herewith may, in Horizon's discretion, be
disregarded by the chairman of the meeting, and upon his instruction, the vote
tellers may disregard all votes cast for each nominee.

     The Merger Agreement provides that in the event the Merger is effected,
Twentieth shall select six (6) individuals who shall be appointed to the Board
of Directors of Horizon.  Twentieth has identified the individuals to be added
to the Horizon Board of Directors and information regarding these individuals is
included in this Prospectus/Joint Proxy Statement.  See, "THE MERGER --
Directors of Horizon".

     Set forth below are the persons who management for Horizon will nominate
for election at the Horizon Shareholders' Meeting to serve as directors of
Horizon until the 1997 annual meeting of shareholders, or until their successors
are elected and qualified.  The table sets forth background information on each
director nominee.  All positions set forth under the column "Principal
Occupation or Employment Last 5 Years" are currently held unless otherwise
indicated by the phrase "(until 19__)."  Unless obvious from the name of the
company, the principal business activity of each named entity is stated in
parenthesis, such as "(retail)".


                                       8
<PAGE>   23



<TABLE>
<CAPTION>
                            SERVED          FAMILY
                            AS A            RELATIONSHIP
                            DIRECTOR OF     WITH OTHER  PRINCIPAL OCCUPATION OR
NOMINEES               AGE  HORIZON SINCE   NOMINEES    EMPLOYMENT LAST 5 YEARS
- --------               ---  -------------   --------    -----------------------
<C>                    <C>  <C>             <C>         <S>

John M. Alderson, IV   66   1993            None        Retired Claims Agent - State Farm Insurance Company, Lewisburg, WV; Owner -
                                                        J. M. Alderson Store, Alderson, WV (retail); Director - Allegheny Bankshares
                                                        Corporation, Lewisburg, WV (until 1993); Director - The First National Bank
                                                        of Alderson, Alderson, WV; Director - Greenbrier Valley National Bank,
                                                        Lewisburg, WV; Director - Horizon Bancorp, Inc., Beckley, WV

Phillip W. Cain        48   1995            None        Executive Vice President, Chief Executive Officer and Director - First
                                                        National Bank in Marlinton, Marlinton, WV; Director - Horizon Bancorp, Inc.,
                                                        Beckley, WV

W. H. File, III        48   1993            (1)         Partner - File, Payne, Scherer & File, Beckley, WV (law firm); Director -
                                                        Bank of Raleigh, Beckley, WV; Director - Horizon Bancorp, Inc., Beckley, WV

David W. Hambrick      54   1993            None        President and Chief Operating Officer - Allegheny Bankshares Corporation,
                                                        Lewisburg, WV (until 1993); Executive Vice President - Greenbrier Valley
                                                        National Bank, Lewisburg, WV; Director - First National Bank in Marlinton,
                                                        Marlinton, WV; Director, Executive Vice President and Chief Financial
                                                        Officer - Horizon Bancorp, Inc., Beckley, WV

Frank S. Harkins, Jr.  56   1982            None        Chairman of the Board and Director - Horizon Bancorp, Inc.; Director -
                                                        National Bank of Summers, Hinton, WV; Director - Greenbrier Valley National
                                                        Bank, Lewisburg, WV; Director, President and Chief Executive Officer - Bank
                                                        of Raleigh, Beckley, WV 

</TABLE>


                                       9
<PAGE>   24
<TABLE>

<C>                    <C>  <C>             <C>         <S>

Tracy W. Hylton, II    47   1993            None        President - Eller, Inc., Beckley, WV (surface mining); President - Nell Jean
                                                        Industries, Inc., Mabscott, WV (mine supply); President - Upper Laurel
                                                        Company, Skelton, WV; President - New Land Leasing Company, Inc., Skelton,
                                                        WV; President - MIN, Inc., Beckley, WV (surface mining); President, Gracie,
                                                        Inc., Mabscott, WV (land leasing); President - Tammie Lynn Coal Company,
                                                        Inc., Skelton, WV (surface mining); Vice President - Nell Jean Enterprises,
                                                        Beckley, WV (retail); President -  Lightning, Inc., Skelton, WV (land
                                                        leasing); President -  Patience, Inc., Skelton, WV  (surface mining);
                                                        Director - Bank of  Raleigh; Director - Horizon Bancorp, Inc., Beckley, WV

Robert L. Kosnoski     61   1993            None        President - Mountaineer Parts & Repair, Inc., Mt. Hope, WV; President -
                                                        Beckley Flying Service, Beckley, WV; President - Paint Creek Coal Co., Mt.
                                                        Hope, WV (coal mining); Director - Bank of Raleigh, Beckley, WV; Director -
                                                        Horizon Bancorp, Inc., Beckley, WV.

Thomas E. Lilly        57   1993            None        Chairman and CEO - Lillys' Crown Jewelers Corporation, Beckley, WV (retail
                                                        jewelry); President - Lillys' Crown Jewelers Corporation, Beckley, WV;
                                                        Participant - J.T.J., Limited Liability Company, Beckley, WV; Director -
                                                        Bank of Raleigh, Beckley, WV; Director - Horizon Bancorp, Inc., Beckley, WV

Carolyn H. McCulloch   67   1984            None        Director and Chairman of the Board - Bank of Raleigh, Beckley, WV; Director
                                                        and Vice President - Horizon Bancorp, Inc., Beckley, WV

Philip L. McLaughlin   55   1993            None        Director, Chairman of the Board and Chief Executive Officer - Allegheny
                                                        Bankshares Corporation, Lewisburg, WV (until 1993); Director, President and
                                                        Chief Executive Officer - Greenbrier Valley National Bank, Lewisburg, WV;
                                                        Director - First National 

</TABLE>


                                       10
<PAGE>   25

<TABLE>
<C>                    <C>  <C>             <C>         <S>
                                                        Bank in Marlinton, Marlinton, WV; Director - Bank of Raleigh, Beckley, WV;
                                                        Director, President and Chief Executive Officer Horizon Bancorp, Inc.,
                                                        Beckley, WV

Harper W. Nelson       58   1993            None        Director, Vice President and Secretary - Marlinton Electric Co., Inc.,
                                                        Marlinton, WV (petroleum); Director - WV Petroleum Marketers Association,
                                                        Marlinton, WV (marketer of petroleum); Director - First National Bank in
                                                        Marlinton, Marlinton, WV; Director - Allegheny Bankshares Corporation,
                                                        Lewisburg, WV (until 1993); Director - Horizon Bancorp, Inc., Beckley, WV

Rodney H. Pack         60   1993            None        Executive Vice President - Acme Limestone Corporation, Fort Springs, WV
                                                        (crushed limestone manufacturing); President - Raleigh Ready Mix and
                                                        Asphalt, Inc., Sprague, WV (Portland cement concrete and asphaltic
                                                        supplier); President - Wolf Creek Corporation, Alderson, WV (land
                                                        development); Director - Greenbrier Valley National Bank, Lewisburg, WV;
                                                        Director - Allegheny Bankshares Corporation, Lewisburg, WV (until 1993);
                                                        Director - Horizon Bancorp, Inc., Beckley, WV

E. M. Payne III        60   1985            (1)         Partner - File, Payne, Scherer & File, Beckley, WV (law firm); President -
                                                        Piney Land Company, Beckley, WV (land development, coal gas and timber);
                                                        President - McCreery Coal Land Company, Beckley, WV (land development, coal,
                                                        gas and timber); President - Combahee Investment Corporation, Beckley, WV
                                                        (land management and development); President - Hilton Head Equity Management
                                                        Co., Inc., Beckley, WV (land management and development); President - The
                                                        James T. McCreery  Company, Inc., Beckley, WV (land development, coal and
                                                        timber); Secretary and Director - Horizon Bancorp, Inc.; Director - Bank of
                                                        Raleigh, Beckley, WV

</TABLE>


                                       11
<PAGE>   26

<TABLE>
<C>                    <C>  <C>             <C>         <S>

R. T. Rogers           62   1985            None        President and CEO - R. T. Rogers Oil Co., Hinton, WV (oil and fuel
                                                        distributor); Director - National Bank of Summers of Hinton, Hinton, WV;
                                                        Director - Horizon Bancorp, Inc., Beckley, WV

James E. Songer        63   1985            None        President - Homeseekers Land & Building Co., Inc., Beckley, WV, (real
                                                        estate); President - Songer Insurance, Inc., Beckley, WV (insurance);
                                                        President - Sunset Memorial Park, Inc. (perpetual care); Director - Bank of
                                                        Raleigh, Beckley, WV; Director - Horizon Bancorp, Inc., Beckley, WV

Albert M. Tieche, Jr.  43   1992            None        Assistant Administrator & Treasurer - Beckley Hospital, Inc., Beckley, WV;
                                                        Administrator and Treasurer - Beckley Hospital, Inc., Beckley, WV; President
                                                        Extend-A-Care, Inc. (health care); Director - Bank of Raleigh, Beckley, WV;
                                                        Director - Horizon Bancorp, Inc., Beckley, WV

E. A. Tuckwiller, Jr.  68   1993            None        Owner - Stonehill Farm, Lewisburg, WV; Director - Greenbrier Valley National
                                                        Bank, Lewisburg, WV; Director - Allegheny Bankshares Corporation, Lewisburg,
                                                        WV (until 1993); Director - Horizon Bancorp, Inc., Beckley, WV

Earl R. Turner         61   1995            None        Senior Vice President - National Bank of Summers of Hinton, Hinton, WV
                                                        (until 3/95); President, CEO and Director - National Bank of Summers of
                                                        Hinton, Hinton, WV; Director - Horizon Bancorp, Inc., Beckley, WV
<FN>
(1) W. H. File, III, and E. M. Payne III are brothers-in-law.

</TABLE>


     If, prior to the Horizon Shareholders' meeting,  any nominee for election
as director would be unexpectedly rendered unable to serve as director by reason
of death or other occurrence, proxies may be voted for a substitute nominee or
nominees, if any, designated by the Board of Directors of Horizon.

     The enclosed proxy will be voted "FOR" the election of management nominees
as directors unless otherwise directed.


                                       12
<PAGE>   27

     THE BOARD OF DIRECTORS OF HORIZON RECOMMENDS THE ELECTION BY THE
SHAREHOLDERS OF ALL OF THE ABOVE NOMINEES.

APPROVAL OF AUDITORS

     At the Horizon Shareholders' Meeting, the Horizon shareholders will be
asked to approve the appointment by the Board of Directors of Ernst & Young LLP
as independent certified public accountants for the year 1996.  The firm of
Ernst & Young LLP has audited the financial statements of Horizon and its
subsidiaries for the years 1993, 1994 and 1995.  Audit services performed by
Ernst & Young LLP include the annual audit and preparation of various reports
based thereon, and services relating to Horizon's Form 10-K annual report filed
with the SEC.

     THE BOARD OF DIRECTORS OF HORIZON RECOMMENDS THE APPROVAL BY THE
SHAREHOLDERS OF ERNST & YOUNG LLP TO SERVE AS INDEPENDENT AUDITORS FOR HORIZON
AND ITS SUBSIDIARIES FOR THE CALENDAR YEAR 1996.  If such selection does not
receive a majority of the votes represented in person or by proxy, management
will request the later approval of an alternate auditor.  Horizon is advised
that no member of Ernst & Young LLP has any direct or indirect interest
in Horizon or its subsidiaries.  Representatives of Ernst & Young LLP are
expected to be present at the Horizon Shareholders' Meeting and will have an
opportunity to make a statement and to respond to appropriate questions.

     The enclosed proxy will be voted "FOR" the selection of Ernst & Young LLP
as independent auditors unless otherwise directed.  The affirmative vote by the
holders of the majority of the shares of Horizon stock represented at the
Horizon Shareholders' Meeting is required to approve the selection of Ernst &
Young LLP.

CHARTER AMENDMENT

     At the Horizon Shareholders' Meeting, the Horizon shareholders will be
asked to consider and vote upon a proposal to amend Horizon's Articles of
Incorporation.  The amendment will be to increase the authorized capital stock
of Horizon from Five Million Dollars ($5,000,000), being Five Million
(5,000,000) shares of common stock, par value One Dollar ($1.00) per share, to
Twenty Million Dollars ($20,000,000), being Twenty Million (20,000,000) shares
of common stock, par value One Dollar ($1.00) per share.

     Assuming no shareholders of either Horizon or Twentieth dissent from the
Merger, and assuming no adjustment to the exchange ratio, after the Merger
approximately Four Million Six Hundred Forty-Eight Thousand One Hundred Thirty
(4,648,130) shares of Horizon stock will be outstanding.  Horizon would have an
insufficient amount of authorized but unissued stock with which to consider any
subsequent acquisition involving the issuance of Horizon stock or to undertake
other


                                       13
<PAGE>   28
actions such as stock splits or stock dividends.  Although the Horizon Board of
Directors does not presently have any additional acquisitions under active
consideration nor does it presently intend to declare a stock split or stock
dividend, the Board believes that it is in Horizon's best interest to amend its
charter so that Horizon shall be in a position to consider future acquisitions
and other stock related matters when they arise.

     THE BOARD OF DIRECTORS OF HORIZON RECOMMENDS THE APPROVAL BY THE HORIZON
SHAREHOLDERS OF THE CHARTER AMENDMENT.  The enclosed proxy will be voted "FOR"
the Charter Amendment unless otherwise directed.  The affirmative vote by the
holders of a majority of the outstanding shares of Horizon stock is required to
approve the Charter Amendment.

THE MERGER AGREEMENT

     At the Horizon Shareholders' Meeting the Horizon shareholders will also be
asked to consider and vote upon a proposal to approve the Merger Agreement
pursuant to which Twentieth will merge with and into Horizon and The Twentieth
Street Bank will become a wholly owned subsidiary of Horizon.  Horizon
shareholders who do not dissent from the Merger will continue to own the stock
in Horizon which they presently own.  Assuming no shareholder of either Horizon
or Twentieth dissents from the Merger and no adjustment to the Exchange Ratio
occurs, after the Merger the existing shareholders of Horizon will own
collectively approximately 60.93% of the outstanding Horizon stock and the
present shareholders of Twentieth will own collectively approximately 39.07% of
the outstanding Horizon stock.

     THE BOARD OF DIRECTORS OF HORIZON HAS APPROVED THE MERGER AGREEMENT AND
RECOMMENDS THAT HORIZON SHAREHOLDERS VOTE "FOR" THE PROPOSAL.  In order for the
Merger to be approved by the shareholders of Horizon, holders of a majority of
the issued and outstanding shares of Horizon stock, or One Million Four Hundred
Fifteen Thousand Sixty-Six (1,415,066) shares, must vote to approve the Merger.

     The Board of Directors recommends a vote "FOR" the Merger for a number of
reasons.  First the Merger will permit Horizon to expand its operations into the
Southwestern part of West Virginia, including one of the major metropolitan
areas of the state.  This will create immediate opportunities to expand services
offered and to cross-sell existing products.  In addition the Merger should
enable Horizon to achieve economies of scale which should enable Horizon, as the
surviving company, to compete more effectively.  Finally, the increased size of
Horizon resulting from the Merger should attract more interest from a wider
range of investors and more coverage of analysis.  See, "THE MERGER --
Background and Reasons for the Merger".

OTHER BUSINESS

     The Board of Directors of Horizon knows of no further business to be
presented at the Horizon Shareholders' Meeting; but if any further business
properly comes before the meeting, the


                                       14
<PAGE>   29
persons named in the enclosed proxy will vote all proxies in accordance with
the recommendations of Horizon's Board of Directors.

OUTSTANDING SHARES AND VOTING RIGHTS

     As of  March 15, 1996, there were Two Million Eight Hundred Thirty-Five
Thousand Six Hundred Seventy (2,835,670) shares of Horizon stock issued and
outstanding which includes Five Thousand Five Hundred Forty (5,540) shares held
as treasury (non-voting) stock.  Only shareholders of record as of the close of
business on ________________, 1996 are entitled to notice of, and to vote on
matters at the Horizon Shareholders' Meeting.

     As indicated above, as of December 31, 1995 the directors and executive
officers of Horizon beneficially owned 13.63% of the issued and outstanding
stock of Horizon and it is anticipated that all such shares of stock will be
voted to approve all proposals.

     As of March 21, 1996, the Bank of Raleigh, a wholly owned subsidiary of
Horizon, holds of record as trustee, agent, custodian or executor, but not
beneficially, Two Hundred Twelve Thousand Three Hundred Sixty-Six (212,366)
shares of stock representing 7.5% of the  issued and outstanding stock of
Horizon.  The bank owns the Horizon stock as agent or sole trustee of certain
revocable and irrevocable trusts and as sole executor of certain estates. These
shares will be voted by the Bank of Raleigh pursuant to the terms of the trust
agreement or at the direction of either the principal or the grantor, in the
case of revocable trusts, and at the direction of the majority of the adult
beneficiaries, in the case of irrevocable trusts and in the case of estates in
which the bank serves as sole executor.

SOLICITATION OF PROXIES

     The accompanying Horizon proxy is solicited by and on behalf of the Board
of Directors of Horizon.  All expenses of preparing, printing and mailing the
proxy, the proxy statement and other materials used in solicitation thereof will
be paid fifty percent (50%) by Horizon and fifty percent (50%) by Twentieth.  In
addition to the use of the mails, proxies may be solicited to a limited extent
by personal interview and telephone by directors, officers and regular employees
of Horizon, none of whom will receive additional compensation for such services.
Horizon may also request brokerage houses, custodians and nominees to forward
soliciting materials to the beneficial owners of stock which such persons hold
of record.  Horizon and Twentieth will pay the reasonable expenses of such
persons for forwarding such materials.

     This Prospectus/Joint Proxy Statement is being mailed to Horizon
shareholders on or about _____________________, 1996.

                                       15
<PAGE>   30

                               SUMMARY OF MERGER

     The following is a brief summary of certain information relating to the
Merger contained elsewhere in this Prospectus/Joint Proxy Statement.  This
summary is not intended to be a summary of all material information relating to
the Merger and is qualified in its entirety by reference to more detailed
information contained elsewhere in this Prospectus/Joint Proxy Statement,
including the Appendices hereto and in the documents incorporated herein by
reference.  A copy of the Merger Agreement is set forth in Appendix I to this
Prospectus/Joint Proxy Statement and reference is made thereto for a complete
description of the terms of the Merger Agreement.  Shareholders are urged to
read carefully the entire Prospectus/Joint Proxy Statement, including the
Appendices.

HORIZON

     Horizon is a registered bank holding company organized under the laws of
the State of West Virginia and headquartered in Beckley, West Virginia.  It was
chartered on May 10, 1982.  Its primary business is the operation of four (4)
subsidiary banks:  Bank of Raleigh, Beckley, West Virginia; The National Bank of
Summers of Hinton, Hinton, West Virginia; Greenbrier Valley National Bank,
Lewisburg, West Virginia; and First National Bank in Marlinton, Marlinton, West
Virginia.  Through its bank subsidiaries, Horizon offers a full selection of
commercial and consumer banking services, including credit and deposit services
and trust services.  At December 31, 1995, based on total assets of
approximately Six Hundred Fourteen Million Seven Hundred Forty-Five Thousand
Dollars ($614,745,000), Horizon was the eighth (8th) largest banking
organization doing business in West Virginia.  Its primary source of income is
dividends from its subsidiary banks.  See, "INFORMATION ABOUT HORIZON BANCORP,
INC."

TWENTIETH

     Twentieth is a registered bank holding company organized under the laws of
West Virginia and headquartered in Huntington, West Virginia.  Twentieth was
chartered on June 13, 1983 to serve as the parent holding company of The
Twentieth Street Bank, Huntington, West Virginia ("Twentieth Street Bank").
Twentieth Street Bank is a community oriented financial institution offering a
full selection of commercial and consumer banking services, including credit and
deposit services and trust services.  At December 31, 1995, based on total
assets of approximately Three Hundred Seventeen Million Three Hundred Eight
Thousand Dollars ($317,308,000), Twentieth was the twelfth (12) largest banking
organization doing business in West Virginia.  Its primary source of income is
dividends from its subsidiary bank.  See, "INFORMATION ABOUT TWENTIETH BANCORP,
INC."

THE MERGER

     The Board of Directors of Horizon and Twentieth have each approved the
Merger Agreement which provides for the merger of Twentieth with and into
Horizon.  As a result of the Merger, Twentieth will cease to exist as a separate
entity and Horizon will continue to operate under its charter and its name,
Horizon Bancorp, Inc.  After the Merger, Twentieth Street Bank will continue to
operate as an independent subsidiary bank and will be owned by Horizon as the
surviving bank holding company.  The subsidiary banks of Horizon will continue
to operate as independent subsidiary


                                       16
<PAGE>   31
banks of Horizon.  See, "THE MERGER -- General Description of the Terms of the
Merger Agreement."

     Pursuant to the terms of the Merger Agreement and subject to adjustment,
Twentieth shareholders who do not dissent will be entitled to receive 1.01
shares of Horizon stock in exchange for each share of Twentieth stock  they own.
See, "THE MERGER -- Exchange Ratio" and "THE MERGER -- Adjustment of Exchange
Ratio."  No fractional shares of Horizon stock will be issued in connection with
the Merger and in lieu thereof  Horizon will pay Twentieth shareholders the
value of any fractional shares of Twentieth stock, in cash, at a price per share
equivalent to the average of the reported daily closing prices of Horizon stock
on the Nasdaq National Market during the period of ten (10) consecutive trading
days ending on the business day immediately preceding the date of the Twentieth
Shareholders' Meeting.  See, "THE MERGER -- Fractional Shares."

     The material conditions to the Merger are (i) the approval of the Merger
Agreement by the shareholders of Horizon and by the shareholders of Twentieth as
herein described, (ii) availability of pooling of interests accounting for the
Merger; and (iii) final approval of the Merger by the Board of Governors of the
Federal Reserve System ("Federal Reserve") and the West Virginia Board of
Banking and Financial Institutions (the "West Virginia Board").  Applications
for required approvals have been filed with the Federal Reserve and the West
Virginia Board.  Although no assurances are or can be given, Horizon and
Twentieth believe that all such required regulatory approvals will be obtained.
The Merger must close not less than thirty (30) days and not more than ninety
(90) days after approval by the Federal Reserve unless extended in writing by
the Federal Reserve.  See, "THE MERGER -- Conditions to Consummation."

     If the Merger is not approved by either the shareholders of Horizon or by
the shareholders of Twentieth at the shareholders' meetings or any adjournment
thereof, or if any of the other conditions to the Merger are not satisfied or,
where possible, waived, Twentieth will remain an independent West Virginia
corporation, Twentieth will not merge with Horizon and Twentieth Street Bank
will not become a wholly-owned subsidiary of Horizon.

REASONS FOR THE MERGER

     From Horizon's perspective, the Merger is beneficial for a number of
reasons. First the Merger will permit Horizon to expand its operations into the
Southwestern part of West Virginia, including one of the major metropolitan
areas of the state.  This will create immediate opportunities to expand services
offered and to cross-sell existing products.  In addition the Merger should
enable Horizon to achieve economies of scale which should enable Horizon, as the
surviving company, to compete more effectively.  Finally, the increased size of
Horizon resulting from the Merger should attract more interest from a wider
range of investors and more coverage from investment research analysts.  See,
"THE MERGER -- Background and Reasons for the Merger".


     From Twentieth's perspective, the Merger is beneficial because it should
improve the liquidity of the stock owned by the Twentieth shareholders.
Furthermore, as a merger partner, Horizon has similar management philosophies as
Twentieth and shares a strong commitment to the community which it serves. See,
"THE MERGER--Background and Reasons for the Merger."


                                       17
<PAGE>   32
EFFECTIVE TIME

     Assuming satisfaction of all conditions to the consummation of the Merger
(See, "THE MERGER -- Conditions to Consummation"),  the "Effective Time" of the
Merger will be the date and time specified in the Certificate of Merger issued
by the West Virginia Secretary of State in accordance with West Virginia law.
The Effective Time shall in no event be more than ten (10) days following the
closing date.  The closing date shall be the date specified by Horizon after
expiration of any and all required waiting periods following the effective date
of required approvals of the Merger by government or regulatory authorities. It
is currently anticipated that the Effective Time will be August 30, 1996.

EXCHANGE RATIO

     Upon consummation of the Merger, each outstanding share of Twentieth stock
(excluding any shares held by dissenting shareholders) will, subject to
adjustment,  be converted into the right to receive 1.01 newly issued shares of
Horizon stock.  Any fractional shares resulting from the Merger will not be
issued and shareholders of Twentieth will instead receive cash in lieu of the
issuance of any fractional shares of Horizon stock.  See, "THE MERGER --
Exchange Ratio" and "THE MERGER -- Fractional Shares."

ADJUSTMENT OF EXCHANGE RATIO

     The Merger Agreement provides that if the average closing price for Horizon
common stock over the ten (10) trading days prior to the anticipated Effective
Time is more than $46.00 per share, then the exchange ratio shall become $46.46
divided by the average closing price over the ten (10) trading days.  In such
event, the Board of Directors of Twentieth can either accept the lower exchange
ratio or terminate the Merger Agreement.  If the average closing price for
Horizon common stock over the (10) ten trading days prior to the Effective Time
is less than $34.00 per share, then the exchange ratio shall become $34.34
divided by the average closing price over the ten (10) trading days.  In such
event, the Board of Directors of Horizon can either permit the higher exchange
ratio or terminate the Merger Agreement.  The bank holding company having the
option to proceed at the adjusted exchange ratio must consent to proceed no
later than seventy-two (72) hours after the last of the ten (10) trading days.

     It is anticipated that if the Exchange Ratio decreases because the average
closing price of Horizon stock is more than $46.00 per share, the Twentieth
Board of Directors will elect to proceed with the Merger in which event the
Exchange Ratio will be less than 1.01.  It is also anticipated that if the
Exchange Ratio increases because the average closing price of Horizon stock is
less than $34.00 per share, the Horizon Board of Directors will elect to
terminate the Merger Agreement.  See, "THE MERGER -- Adjustment of Exchange
Ratio."


                                       18
<PAGE>   33
OPINION OF TWENTIETH'S FINANCIAL ADVISOR

     Twentieth has received the opinion of Baxter Fentriss and Company ("Baxter
Fentriss") dated February 6, 1996, that, as of that date the consideration to be
received by the Twentieth shareholders in exchange for their stock in the Merger
was fair, from a financial point of view, to the Twentieth shareholders.  In
connection with the opinion and other financial advisory services provided to
Twentieth, Twentieth has agreed to pay Baxter Fentriss (i) an advisory fee of
$15,000, (ii) a merger fee equal to .90% of the aggregate consideration paid,
(iii) a fairness opinion fee of $50,000, and (iv) reimbursement of all
reasonable out-of-pocket expenses incurred in connection with its services
provided to Twentieth, not to exceed $10,000 without Twentieth's prior approval.
The merger fee will be reduced by the amount of the fairness opinion fee in the
event of a successful transaction.  As of March 1, 1996, Twentieth has paid
Baxter Fentriss $30,129 of such amount with the balance of the fee payable upon
consummation of the Merger.  For additional information concerning Baxter
Fentriss and its opinion, See, "THE MERGER -- Opinion of Baxter Fentriss" and
the opinion of such firm attached as Appendix II to the Prospectus/Joint Proxy
Statement.

OPINION OF HORIZON'S FINANCIAL ADVISOR

     Horizon has received the opinion of Robinson-Humphrey Company
("Robinson-Humphrey") dated February 6, 1996, that, as of that date, the
transaction is fair, from a financial point of view, to the Horizon
shareholders.  In connection with the opinion and other advisory services
provided to Horizon, Horizon has agreed to pay Robinson - Humphrey (i) a
Fairness Opinion Fee of $150,000, and (ii) a total Success Fee of $425,000 to be
paid upon consummation of the Merger.  The Fairness Opinion Fee will be credited
against the Success Fee.  As of March 1, 1996, Horizon has paid
Robinson-Humphrey the Fairness Opinion Fee of $150,000.   The Success Fee less
the Fairness Opinion Fee is payable upon consummation of the Merger.  For
additional information concerning Robinson-Humphrey and its opinion, See, "THE
MERGER -- Opinion of Robinson-Humphrey" and the opinion of such firm attached as
Appendix II to the Prospectus/Joint Proxy Statement.

INTEREST OF CERTAIN PERSONS IN THE MERGER

     The Merger Agreement provides that Twentieth Street Bank may and it is
anticipated that Twentieth Street Bank will offer employment agreements to
Bernard C. McGinnis, III, Thomas L. McGinnis and Brian A. Shepherd.  Such
employment contracts shall be for employment by Twentieth Street Bank at the
individual's position, location and compensation as of January 1, 1996.  The
term of the Employment Contracts offered to Bernard C. McGinnis, III and Thomas
L. McGinnis shall be three (3) years from the Effective Time and the term of the
Employment Contract offered to Brian A. Shepherd shall be two (2) years from the
Effective Time.  A copy of the form of  such employment contracts is attached as
Exhibit C to the Merger Agreement.  A copy of the Merger Agreement is attached
as Appendix I to the Prospectus/Joint Proxy Statement. See, "THE MERGER --
Employment Contracts."

DISSENTERS' RIGHTS

     Under West Virginia law, the shareholders of Twentieth and the shareholders
of Horizon may each exercise dissenters' rights in connection with the Merger.
Assuming shareholder approval and


                                       19
<PAGE>   34
consummation of the Merger, shareholders who properly exercise their
dissenters' rights will be entitled to the fair value of their shares in
accordance with Sections 31-1-122 through 31-1-123 of the Code of West Virginia
of 1931, as amended (the "West Virginia Code"), a copy of which is attached as
Appendix III to this Prospectus/Joint Proxy Statement.  Failure to exercise
dissenters' rights properly will result in the loss of such rights.  See, "THE
MERGER -- Dissenters' Rights."

     Under West Virginia law, a shareholder who dissents is entitled to receive
cash equal to the fair market value of the shareholder's stock as of the date
prior to the vote approving the merger EXCLUDING ANY APPRECIATION OR
DEPRECIATION IN ANTICIPATION OF THE MERGER.  If the parties cannot agree on such
value, the value will be determined by a court proceeding.  A shareholder who
votes "AGAINST" the Merger is not required to also dissent.  For example, a
Horizon shareholder can vote "AGAINST" the Merger and sell his, her or its stock
in the market if the Merger is nonetheless approved and consummated. Similarly,
a Twentieth shareholder can vote "AGAINST" the Merger and not dissent, but sell
his, her or its Horizon stock received in exchange for the Twentieth stock in
the market if the Merger is approved.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     The Merger is structured to qualify as a tax free exchange for federal
income tax purposes to Twentieth shareholders who receive Horizon stock in
exchange for their Twentieth stock.  In such event, no gain or loss will be
recognized by Twentieth shareholders as a result of the Merger.  Cash received
by a Twentieth shareholder (i) in lieu of fractional shares, or (ii) as payment
to dissenting shareholders would be taxable.  Because of the complexity of the
federal income tax laws and because the tax consequences may vary depending upon
a shareholder's individual circumstances or tax status, it is recommended that
each shareholder of Twentieth consult his or her tax advisor concerning the
federal (and applicable state, local or other) tax consequences of the Merger.
The Merger will have no taxable effect on Horizon shareholders unless a Horizon
shareholder dissents in which case taxable gain or  loss will be recognized by
the Horizon shareholder.  See, "THE MERGER -- Certain Federal Income Tax
Consequences."

RESALES BY AFFILIATES

     As a condition to Horizon's obligation to consummate the Merger, affiliates
of Twentieth must have entered into agreements that they will not sell any
shares of Horizon stock received upon consummation of the Merger except in
compliance with Rule 145 under the Securities Act or otherwise in compliance
with the Securities Act and the rules and regulations promulgated thereunder.
See, "THE MERGER -- Restrictions on Resales by Affiliates."

MARKET PRICES AND DIVIDENDS

     Horizon stock is traded in the over-the-counter market and the shares are
quoted on the Nasdaq National Market.  On February 6, 1996, the last business
day before announcement of the Merger, the last reported sales price for Horizon
stock was $43.00.  On _________, 1996, the last


                                       20
<PAGE>   35
reported sales price on the Nasdaq National Market for Horizon stock was
$_____________.

     Horizon has paid cash dividends since 1982.  Although Horizon currently
intends to continue paying quarterly cash dividends on the Horizon stock, there
can be no assurance that Horizon's dividend policy will remain unchanged after
completion of the Merger.  The declaration and payment of dividends thereafter
will depend upon business conditions, operating results, capital and reserve
requirements, and the Board of Directors' consideration of other relevant
factors.

     Currently there is no established market on which Twentieth stock is listed
or traded.  Purchases and sales of Twentieth stock occur from time to time in
private transactions.  On February 6, 1996, the last business day before
announcement of the Merger, the last sale price for Twentieth stock known to
management was Twenty Dollars ($20.00) per share for Two Hundred (200) shares on
December 5, 1995.  On March 1, 1996, the last sale price for Twentieth stock
known to management remained the sale on December 5, 1995 for Two Hundred (200)
shares at Twenty Dollars ($20.00) per share.

     Twentieth has paid cash dividends since 1983.  There can be no assurance
that, in the absence of the consummation of the Merger, dividends would be paid
in the future.  The declaration, payment and amount of any such future dividends
would depend upon business conditions, operating results, capital, reserve
requirements, regulatory authorization and Twentieth's Board of Directors'
consideration of other relevant factors.  See, "MARKET PRICES AND DIVIDENDS."

COMPARISON OF SHAREHOLDERS' RIGHTS

     Since Horizon and Twentieth are both West Virginia corporations and bank
holding companies, the rights of the shareholders of each are substantially the
same.  Neither Horizon nor Twentieth offers its shareholders' preemptive rights.
The Bylaws of Horizon, however, do require approval by two-thirds of all
directors for approval of certain material actions, including but not limited
to, approving any merger, sale or corporate reorganization.  See, "CERTAIN
DIFFERENCES IN THE RIGHTS OF HOLDERS OF TWENTIETH STOCK AND HORIZON STOCK."

ACCOUNTING TREATMENT

     Horizon expects the Merger to be accounted for under the pooling of
interests method of accounting.  Under the pooling of interests method of
accounting, the acquired institution's balance sheet is not adjusted to market
value but remains at historical cost.  Under this method of accounting, Horizon
will restate its prior period financial statements (eliminating any intercompany
accounts and expensing transaction costs as incurred) to include the acquired
institution for all periods presented.  


                                       21
<PAGE>   36
CONDITIONAL STOCK OPTION AGREEMENT

     On February 6, 1996, Horizon and Twentieth entered into a Conditional Stock
Option Agreement pursuant to which Twentieth granted Horizon an option to
purchase from Twentieth common stock in Twentieth in an amount up to 19.9% of
the shares of Twentieth's common stock outstanding at the time the option is
exercised. The option may be exercised only upon the occurrence of certain
stated events relating to the acquisition of Twentieth by a third party.  The
option price for the Twentieth stock is $40.40 per share.

     The purpose of the Conditional Stock Option Agreement is to reduce the
likelihood that a third party could attempt to interfere with the proposed
Merger by acquiring or attempting to acquire control of  Twentieth.  The
Conditional Stock Option Agreement terminates on December 31, 1996 or the date
on which the Merger is effected, whichever first occurs.  See, "THE MERGER --
Conditional Stock Option Agreement."


                                  RISK FACTORS

     Twentieth shareholders who do not dissent will be exchanging their
Twentieth stock for Horizon stock.  Many of the risks associated with holding
Twentieth stock will be similar to the risks of holding Horizon stock.  There
are risks inherent in any equity investment.  Horizon and Twentieth are each
West Virginia bank holding companies subject to substantial state and federal
regulation including regulation of business opportunities and the ability to pay
dividends.

     Horizon shareholders who do not dissent will continue to hold Horizon
stock. From a Horizon shareholder's perspective, taken as a group, one impact of
the Merger will be the voting dilution resulting from the addition of the
Twentieth shareholders as shareholders of Horizon.  Assuming no Horizon
shareholder and no Twentieth shareholder dissents from the Merger, and assuming
further no adjustment in the Exchange Ratio, after the Merger the existing
Horizon shareholders will own 60.89% of all of the issued and outstanding stock
of Horizon.

     For both Twentieth and Horizon shareholders, there is the risk associated
with the expansion of size and geographic region associated with the Merger as
well as the risk associated with the acquired assets and liabilities of the
other company.

     There is also the risk that the Merger will not receive the necessary
regulatory or shareholder approvals or that all of the other conditions to the
Merger will not be met.


                         SELECTED FINANCIAL INFORMATION

HORIZON

     The following table sets forth selected financial data and other operating
information of Horizon at the dates and for the periods ended December 31, 1995,
1994, 1993, 1992, and 1991, is derived from, and should be read in conjunction
with, Horizon's consolidated financial statements,


                                       22
<PAGE>   37
related notes and other financial information incorporated herein by reference.
Dollars are expressed in thousands except per share data.  See, "INCORPORATION
OF CERTAIN DOCUMENTS BY REFERENCE."

<TABLE>
<CAPTION>
                                                              FIVE YEAR SELECTED FINANCIAL SUMMARY
                                          ----------------------------------------------------------------------------   
                                            1995             1994              1993            1992             1991
                                            ----             ----              ----            ----             ----
<S>                                       <C>              <C>              <C>              <C>              <C>
OPERATING RESULTS:
Interest Income                           $ 46,474         $ 41,217         $ 40,647         $ 42,609         $ 45,199
Interest Expense                            18,051           14,573           15,266           18,735           23,879
Net Interest Income                         28,423           26,644           25,381           23,874           21,320
Provision for Loan Losses                    1,061            1,525            1,955            2,069            2,754
Noninterest Income                           3,022            2,447            2,506            2,598            2,214
Noninterest Expense                         18,324           17,394           16,353           15,392           14,707
Provision for Income Taxes                   3,989            3,201            3,060            2,851            1,627
Net Income                                   8,071            6,971            6,519            6,160            4,446

PER SHARE OF COMMON STOCK:
Net Income:                               $   2.85         $   2.46         $   2.30         $   2.17         $   1.55
Dividends Declared                            1.05             0.97             0.93             0.85             0.75
Book Value                                   25.13            22.43            21.39            19.98            18.36

AVERAGE BALANCE SHEET SUMMARY:
Total Loans                               $399,759         $362,027         $331,948         $307,542         $273,449
Investment Securities                      148,770          159,942          173,993          175,152          185,882
Total Assets                               595,867          563,564          550,174          530,144          506,783
Deposits                                   503,796          477,511          469,655          452,690          432,274
Long-Term Debt                                   0              266              800            1,400            2,150
Shareholders' Equity                        67,300           61,767           58,431           54,929           51,880

BALANCES AT YEAR-END:
Total Assets                              $614,745         $569,935         $555,671         $541,131         $511,624
Net Loans                                  419,880          370,582          343,539          317,995          281,562
Investment Securities                      149,533          155,150          170,359          166,948          184,938
Earning Assets                             571,813          531,082          522,196          507,784          477,568
Deposits                                   514,475          483,555          472,415          463,356          435,150
Shareholders' Equity                        71,107           63,582           60,637           56,647           52,819

KEY FINANCIAL RATIOS:
Average Equity to Average Assets             11.29%           10.96%           10.62%           10.36%           10.24%
Return on Average Assets                      1.35             1.24             1.18             1.16             0.88
Return on Average Equity                     11.99            11.29            11.16            11.21             8.57
Efficiency Ratio                             58.27            59.79            58.64            58.14            62.49
Dividends Declared as a Percent
  of Net Income                              36.84            39.48            39.19            34.50            43.61
Average Loans to Average Deposits            79.35            75.82            70.68            67.94            63.26

ASSET QUALITY:
Nonperforming Loans to
  Total Loans                                 1.30%            1.26%            2.50%            1.73%            1.97%
Nonperforming Assets to Total
  Assets                                      0.98             0.98             1.76             1.41             1.64
Allowance for Loan Losses to
  Nonperforming Loans                       117.92           132.89            64.61            83.81            62.71
Allowance for Loan
   Losses as a  Percent
   of Total Loans                             1.53             1.68             1.62             1.45             1.24
</TABLE>

                                       23
<PAGE>   38

TWENTIETH

     The following table sets forth selected financial data and other operating
information of Twentieth at the dates and for the periods ended December 31,
1995, 1994, 1993, 1992, and 1991, is derived from, and should be read in
conjunction with, Twentieth's consolidated financial statements,  related notes
and other financial information incorporated herein by reference.  Dollars are
expressed in thousands except per share data.  See, "INCORPORATION OF CERTAIN
DOCUMENTS BY REFERENCE."

<TABLE>
<CAPTION>
                                                              FIVE YEAR SELECTED FINANCIAL SUMMARY
                                          ------------------------------------------------------------------------------   
                                            1995            1994              1993             1992              1991
                                            ----            ----              ----             ----              ----
<S>                                       <C>              <C>              <C>              <C>               <C>
YEAR-END BALANCES:
Total Assets                              $317,308         $312,671          $308,345         $307,123          $286,670
Total Earning Assets                       290,442          285,587           284,186          282,263           263,913
Total Deposits                             280,257          279,064           276,383          275,852           258,397
Shareholders' Equity                        33,276           29,310            28,305           26,168            24,237

OPERATING RESULTS:
Total Interest Income                     $ 23,716         $ 21,014          $ 20,382         $ 22,526          $ 24,624
Total Interest Expense                       9,120            7,116             7,923           10,504            13,275
Net Interest Income                         14,596           13,898            12,459           12,022            11,349
Provision for Loan Losses                    1,444              739               381              893             1,555
Noninterest Income                           1,606            1,147             1,457            1,238             1,053
Noninterest Expense                         11,347           11,152            10,558            9,655             8,731
Net Income                                   3,411            3,154             2,977            2,712             2,116

PER SHARE OF COMMON
  STOCK:
Net Income(1)                             $   1.90         $   1.75          $   1.65         $   1.51          $   1.18
Book Value(2)                                18.51            16.29             15.73            14.54             13.49
Cash Dividends(2)                              .60              .50               .47              .43               .40

AVERAGE BALANCE SHEET SUMMARY:
Loans, Net of Unearned Income             $198,098         $190,175          $177,060         $159,535          $146,478
Investment Securities                       85,083           92,081           101,026          113,908           110,492
Total Assets                               312,713          307,215           304,620          299,406           281,320
Deposits                                   275,579          274,262           273,074          270,050           250,683
Shareholders' Equity                        31,590           29,106            27,535           25,234            23,056

KEY FINANCIAL RATIOS:
Return on Average Assets                      1.09%            1.03%             0.98%            0.91%             0.75%
Return on Average Equity                     10.80            10.84             10.81            10.75              9.18
Average Equity to Average Assets             10.10             9.47              9.04             8.43              8.20

<FN>
(1)Per Common share based on weighted average common shares outstanding.

(2)Reflects a 3-1 stock split.
</TABLE>


                                       24
<PAGE>   39
                                 PER SHARE DATA

     The following unaudited consolidated financial information reflects certain
per share data relating to (i) net income, book value, and cash dividends
declared per common share for Horizon and Twentieth on a historical basis, and
(ii) net income book value and cash dividends declared per common share on a pro
forma basis for Horizon after giving effect to the Merger, and (iii) net income,
book value, and cash dividends declared per common share on a pro forma
equivalent basis for Twentieth assuming that the Merger had been effected for
the period presented, no shareholders exercise their rights to dissent and the
proposed transaction is accounted for using pooling of interests method of
accounting.  The data presented should be read in conjunction with and has been
derived from historical consolidated financial statements of Horizon and
Twentieth and the related notes thereto incorporated herein by reference.  See,
"INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE."

Equivalent Per Share Information
Horizon Bancorp, Inc. / Twentieth Bancorp, Inc.

<TABLE>
<CAPTION>
                                                     Horizon Bancorp, Inc.          Twentieth Bancorp, Inc.
                                                     ---------------------          -----------------------
                                                                                                     Equivalent
                                                                                                     Pro Forma-
                                                    Historical      Pro Forma       Historical         Note A
                                                    ----------      ---------       ----------       ---------- 
<S>                                                   <C>             <C>              <C>              <C>
Book value per share as of:
                    December 31, 1995                 $25.13         $22.46           $18.51           $22.68


Income per share from continuing operations:
For the years ended December 31,
                         1995                         $ 2.85         $ 2.47           $ 1.90           $ 2.49
                         1994                           2.46           2.18             1.75             2.20
                         1993                           2.30           2.04             1.65             2.06


Cash dividends per share:
For the years ended December 31,
                         1995                         $ 1.05         $ 1.05           $ 0.60           $ 1.06
                         1994                           0.97           0.97             0.50             0.98
                         1993                           0.93           0.93             0.47             0.94
<FN>

Note A -     The equivalent pro forma per share data for Twentieth Bancorp,
             Inc. is computed by multiplying Horizon Bancorp, Inc.'s pro forma
             per share information by 1.01 - the Exchange Ratio.
</TABLE>


                                       25
<PAGE>   40

                                   THE MERGER

     The following is a summary of certain terms and provisions of the proposed
Merger.  It includes a summary of the Merger Agreement which is qualified in its
entirety by reference to the Merger Agreement, which is incorporated by
reference herein and is attached hereto as Appendix I.

BACKGROUND AND REASONS FOR THE MERGER

     HORIZON'S PERSPECTIVE.  It is the opinion of the management and Board of
Directors of Horizon that the Merger is in the best interest of Horizon
shareholders for several reasons which are summarized as follows:

     1. The Merger will permit Horizon to expand its operations into the
     southwestern part of West Virginia including Huntington, one of the major
     metropolitan areas of the state.  This market diversification is viewed as
     healthy for the economic future of Horizon.  The Merger will also
     complement Horizon's philosophy of affiliating with banks which have a
     strong community orientation.

     2. The increased size of the combined companies should attract more
     interest from a wider range of investors as well as research analysts of
     banks and other financial institutions.  An expanded shareholder base and
     wider range of investor interest tends to increase share liquidity and may
     reduce the spread between the bid and asked price of Horizon's stock on the
     NASDAQ National Market System.

     3. The Merger will create immediate opportunities to expand services
     offered by the subsidiary banks and to cross-sell existing products.

     4. The Merger should enable management to achieve economies of scale which
     should enable Horizon as the surviving company to compete more effectively.
     Specifically, the management teams of Horizon and Twentieth have identified
     operational synergies that will be implemented during the first year
     following the Merger.  Expanded services and scale economies may result in
     increased earnings per share for Horizon and additional shareholder value;
     however, such enhancements cannot be guaranteed.

     Horizon has been actively seeking and reviewing affiliation opportunities
which would expand Horizon's market area and increase Horizon's size of in order
to achieve economies of scale and enable it to compete more effectively.
Horizon's philosophy has been to achieve, through the affiliation of community
banks, improved financial performance by seeking efficiencies in those areas not
apparent to customers while maintaining strong customer service and community
orientation by decentralizing management as it relates to decisions involving
customers and by increasing participation of the boards of directors of its
subsidiary banks.  In accordance with this philosophy,


                                       26
<PAGE>   41
management of Horizon has initiated and responded to contacts with and from
institutions of various sizes and different markets in West Virginia and
adjoining states.  The Board of Directors of Horizon has received and reviewed
information from time-to-time from outside consultants relating to bank merger
activity and has followed information about bank mergers and the terms of those
mergers in West Virginia and in the region surrounding West Virginia.

     In 1993 Horizon contacted Robinson-Humphrey to obtain outside advice
regarding merger activity.  Robinson-Humphrey provides a wide-range of
investment banking services, including private placement of debt and equity,
merger and acquisition advice, fairness opinions, valuations and brokerage
services. Robinson-Humphrey has extensive experience in the West Virginia market
and the markets in the southeastern region of the United States.

     After a review and consideration of the various alternatives, the Horizon
Board of  Directors concluded it would be in Horizon's best interest to increase
its size to achieve efficiencies and to enhance the marketability of Horizon
shares on the NASDAQ/NMS market.  The Horizon Board of Directors established a
strategic objective of obtaining a minimum size of approximately $1 billion in
assets in order to attract additional investor interest and coverage by
analysts.  With that objective, Horizon's management continued to seek
additional affiliations of community banks.

     In the fourth quarter of 1995, a representative of Twentieth contacted
Horizon for the purpose of expressing an interest by Twentieth in affiliating
with a larger company to improve the value and the liquidity of Twentieth's
shares. The Board of Directors of Horizon considered the expression of interest
by Twentieth and concluded that Horizon should pursue this opportunity.  The
acquisition of Twentieth, as a company with $300 million in assets and
approximately 425 shareholders, would increase Horizon's size to over $900
million in assets, increase the shareholder base and expand Horizon into a major
West Virginia market.

     Horizon engaged Robinson-Humphrey to analyze the proposed acquisition of
Twentieth, analyze Twentieth, and assist Horizon in developing a proposal to
offer to Twentieth which would be fair to Horizon's shareholders.
Robinson-Humphrey, utilizing publicly available information and information
provided by Twentieth, conducted various financial analyses to assist Horizon in
arriving at an offering exchange ratio of Horizon shares for Twentieth shares
under pooling-of-interest accounting.  The analysis provided by
Robinson-Humphrey included the pro-forma effect of the transaction at the
proposed exchange ratio.  See, "THE MERGER -- Opinion of Robinson-Humphrey." In
addition to the financial elements of the analysis of the proposed merger, the
Board  of Directors of Horizon considered other benefits that could be received
by Horizon as a result of the proposed acquisition.  Included in these strategic
benefits are the entry into an attractive West Virginia market with an existing
bank having a high market share, an increased shareholder base, the increased
profile of Horizon, and a good management team at Twentieth which supports
Horizon's community-bank philosophy.  After this analysis, the Board of
Directors of Horizon authorized management to make a proposal to Twentieth.

     On November 20, 1995, Horizon, having been authorized and directed by its
Board of Directors, made an offer to Twentieth of 1.01 shares of Horizon common
stock for each outstanding share of Twentieth common stock.  In accordance with
Horizon's philosophy of community-bank


                                       27
<PAGE>   42
management, Horizon's proposal included the continuation of the management of
Twentieth Street Bank, the subsidiary of Twentieth, and the addition of members
from Twentieth to Horizon's Board of Directors and Executive Committee.
Accordingly, B. C. McGinnis, III, President, Thomas L. McGinnis, Executive Vice
President, and Brian Shepherd, Senior Vice President, and Cashier are expected
to continue in their present capacity at Twentieth Street Bank.  In addition,
six (6) directors of Twentieth will be added to the Horizon Board of Directors
and three (3) of these members will join Horizon's Executive Committee.  See, 
"THE MERGER -- Directors of Horizon."

     TWENTIETH'S PERSPECTIVE. Over the years Twentieth has considered and
pursued merger opportunities as they arose. In 1984, Twentieth acquired by
purchase the First National Bank of West Hamlin and in 1985 the Bank of Milton.
These banks were considered attractive merger candidates because of their
earnings potential, the markets which they served and the close proximity to
Twentieth's main office in Huntington, West Virginia. Since 1985, Twentieth
reviewed and considered other merger candidates but no additional affiliations
were consummated. 

     In 1995, Twentieth became interested in affiliating with Horizon for a
number of reasons. First, the management and the Board of Directors of Twentieth
believe that a merger with Horizon should improve the liquidity of the shares
owned by the Twentieth shareholders. Presently, there is no established market
in which Twentieth stock is regularly traded nor any uniformly quoted price for
Twentieth stock. Purchases and sales of Twentieth stock occur from time to time
in private transactions. As a result of the merger with Horizon, the former
Twentieth shareholders will own Horizon stock which is traded on the Nasdaq
National Market. This should greatly increase the liquidity of the shares held
by Twentieth shareholders.

     Management and the Board of Directors of Twentieth further believe that a
merger with Horizon will be beneficial because of the similarities shared by the
two organizations. Horizon has similar management philosophies as Twentieth and
shares a strong commitment to the communities which it serves. These
similarities are evident by the terms of the Merger Agreement which provide for
the continuation of the management of Twentieth Street Bank. The Merger
Agreement also provides for the addition of six (6) members selected by
Twentieth to Horizon's Board of Directors and three (3) of such members to
Horizon's Executive Committee.

OPINION OF BAXTER FENTRISS

     GENERAL.  Baxter Fentriss has acted as financial advisor to Twentieth
Bancorp, Inc. and its subsidiary bank, Twentieth Street Bank, in connection with
the Merger.  Baxter Fentriss assisted Twentieth in identifying prospective
acquirors.  On February 6, 1996, Baxter Fentriss delivered to Twentieth its
opinion that as of such date, and on the basis of matters referred to herein,
the offer is fair, from a financial point of view, to the holders of Twentieth
common stock.  In rendering its opinion, Baxter Fentriss consulted with the
management of Twentieth and Horizon; reviewed the Merger Agreement and certain
publicly-available  information on the parties; and reviewed certain additional
materials made available by the management of Twentieth, Horizon and their
respective subsidiaries.

     In addition Baxter Fentriss discussed with the management of Twentieth and
Horizon their respective businesses and outlook.  No limitations were imposed by
Twentieth's Board of Directors upon Baxter Fentriss with respect to the
investigation made or procedures followed by it in rendering its opinion.  The
full text of Baxter Fentriss' written opinion is attached as Appendix II to this
Prospectus/Joint 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 Baxter Fentriss in
connection therewith.

     Baxter Fentriss' opinion is directed to Twentieth's Board of Directors
only, and is directed  only to the fairness, from a financial point of view, of
the Exchange Ratio.  It does not address Twentieth's underlying business
decision to effect the Merger, nor does it constitute a recommendation to any
Twentieth shareholder as to how such shareholder should vote with respect to the
Merger at the Twentieth Shareholders' Meeting or as to any other matter.

     Baxter Fentriss' opinion was one of many factors taken into consideration
by Twentieth's Board of Directors in making its determination to approve the
Merger Agreement, and the receipt of Baxter Fentriss' opinion is a condition
precedent to Twentieth consummating the Merger.  The opinion of Baxter Fentriss
does not address the relative merits of the Merger as compared to any
alternative business strategies that might exist for Twentieth or the effect of
any other business combination in which Twentieth might engage.

     Baxter Fentriss, as part of its investment banking business, is continually
engaged in the valuation of financial institutions and their securities in
connection with mergers and acquisitions and valuations for estate, corporate
and other purposes.  Baxter Fentriss is a recognized advisor to firms in the
financial services industry on mergers and acquisitions. Twentieth selected
Baxter


                                       28
<PAGE>   43
Fentriss as its financial advisor because Baxter Fentriss is an investment
banking firm focusing on bank and thrift transactions, and because of the
firm's experience and expertise in transactions similar to the
Merger.  Baxter Fentriss is not affiliated with Horizon or Twentieth.

     In connection with rendering its opinion to Twentieth's Board of Directors,
Baxter Fentriss performed a variety of financial analyses.  In conducting its
analyses and arriving at its opinion as expressed herein, Baxter Fentriss
considered such financial and other factors as it deemed appropriate under the
circumstances including, among others, the following:  (i) the historical and
current financial condition and results of operations of Horizon and Twentieth
including interest income, interest expense, interest sensitivity, noninterest
income, noninterest expense, earnings, book value, returns on assets and equity,
capitalization, the amount and type of non-performing assets, the impact of
holding certain non-earning real estate assets, the reserve for loan losses and
possible tax consequences resulting from the transaction; (ii) the business
prospects of Horizon and Twentieth; (iii) the economics of Horizon's and
Twentieth's respective market areas; (iv) the historical and current market for
Horizon and Twentieth common stock; and (v) the nature and terms of certain
other merger transactions that it believed to be relevant.  Baxter Fentriss also
considered its assessment of general economic, market, financial and regulatory
conditions and trends, as well as its knowledge of the financial institutions
industry, its experience in connection with similar transactions, its knowledge
of securities valuation generally, and its knowledge of merger transactions in
West Virginia.

     In connection with rendering its opinion, Baxter Fentriss reviewed (i) the
Merger Agreement; (ii) drafts of this Prospectus/Joint Proxy Statement; (iii)
the Annual Reports to shareholders, including the audited financial statements
of Twentieth for the year ended December 31, 1993 and 1994, and unaudited
financial data for the year ended December 31, 1995; (iv) the Annual Reports to
shareholders, including the audited financial statements of Horizon for the
years ended December 31, 1993 and 1994, and unaudited financial data for the
year ended December 31, 1995; (v) the 10Ks  for Twentieth and Horizon for the
year ended December 31, 1995; (vi) pro-forma, combined, unaudited, condensed
balance sheets as of December 31, 1995, as well as pro-forma, combined,
unaudited statements of income for the year ended December 31, 1995; and (vii)
certain additional financial and operating information with respect to the
business, operations and prospects of Horizon and Twentieth as it deemed
appropriate. Baxter Fentriss also (a) held discussions with members of the
senior management of Horizon and Twentieth regarding the historical and current
business operation, financial condition and future prospects of their respective
companies; (b) reviewed the historical market prices and trading activity for
the common stock of Twentieth and Horizon; (c) compared the results of
operations of Twentieth and Horizon with those of certain banking companies that
it deemed to be relevant; (d) analyzed the pro-forma financial impact of the
Merger on Horizon; (c) analyzed the pro forma financial impact of the Merger on
Twentieth; and (f) conducted such other studies, analyses, inquiries and
examinations as Baxter Fentriss deemed appropriate.

     VALUATION METHODOLOGIES.  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.  Moreover, the evaluation of fairness,
from a financial point of view, of the Exchange Ratio to holders of Twentieth
common stock was to some extent a subjective one based on the experience and
judgment of Baxter Fentriss and not merely


                                       29
<PAGE>   44
the result of mathematical analysis of financial data.  Accordingly,
notwithstanding the separate factors summarized below, Baxter Fentriss believes
that its analyses must be considered as a whole and that selecting portions of
its analyses and of the factors considered by it, without considering all
analyses and factors, could create an incomplete view of the evaluation process
underlying its opinion.  The ranges of valuations resulting from any particular
analysis described below should not be taken to be Baxter Fentriss' view of the
actual value of Twentieth or Horizon.  In performing its analyses, Baxter
Fentriss made numerous assumptions with respect to industry performance,
business and economic conditions and other matters, many of which are beyond
the control of Twentieth or Horizon.  The analyses performed by Baxter Fentriss
are not necessarily indicative of actual values or future results, which may be
significantly more or less favorable than suggested by such analyses.
Additionally, analyses relating to the values of businesses do not purport to
be appraisals or to reflect the prices at which businesses actually may be
sold.  In rendering its opinion, Baxter Fentriss assumed that, in the course of
obtaining the necessary regulatory approvals for the Merger, no conditions will
be imposed that will have a material adverse effect on the contemplated
benefits of the Merger, on a pro-forma basis, to Twentieth.

     The following is a summary of selected analyses performed by Baxter
Fentriss in connection with its opinion.

     STOCK PRICE HISTORY.  Baxter Fentriss studied the history of the trading
     prices and volume for Twentieth and Horizon common stock and compared that
     to publicly traded banks in West Virginia and to the price offered by
     Horizon. As of December 31, 1995, Twentieth's fully diluted book value was
     $18.51 per share.  There is no formal trading market for Twentieth common
     stock.

     COMPARATIVE ANALYSIS.  Baxter Fentriss compared the price to earnings
     multiple, price to book multiple, and price to assets multiple of the
     Horizon offer with other comparable merger transactions in West Virginia.
     The comparative multiples included both bank and thrift sales during the
     last 3 years.

     PRO-FORMA IMPACT.  Baxter  Fentriss considered the pro-forma impact of the
     transaction and concluded the transaction should have a positive long-term
     impact on Twentieth and Horizon shareholders.

     DISCOUNTED CASH FLOW ANALYSIS.  Baxter Fentriss performed a discounted cash
     flow analysis to determine hypothetical present value for a share of
     Twentieth's common stock as a 5 and 10 year investment.  Under this
     analysis, Baxter Fentriss considered various scenarios for the performance
     of Twentieth's stock using (i) a range from 6% to 12% in the growth of
     Twentieth's earnings and dividends and (ii) a range from 8 times to 20
     times earnings as the terminal value for Twentieth's stock.  A range of
     discount rates from 11% to 15% were applied to these alternative growth and
     terminal value scenarios.  These ranges of discount rates, growth
     alternatives, and terminal values were chosen based upon what Baxter
     Fentriss, in its judgment, considered to be appropriate taking into
     account, among other things, Twentieth's past and current performance, the
     general level of inflation, rates of return for fixed


                                       30
<PAGE>   45
     income and equity securities in the marketplace generally and for companies
     with similar risk profiles.  In most of the scenarios considered, the
     present value of a share of Twentieth's common stock was calculated at less
     than that of the Horizon offer.  Thus, Baxter Fentriss' discounted cash
     flow analysis indicated that Twentieth shareholders would be in a better
     financial position by receiving the Horizon common stock offered in the
     Merger rather than continuing to hold Twentieth's common stock.

     Using publicly available information on Horizon and applying the capital
guidelines of banking regulators, Baxter Fentriss' analysis indicated that the
Merger would not seriously dilute the capital and earnings capacity of Horizon
and would, therefore, likely not be opposed by the banking regulatory agencies
from a capital perspective.  Furthermore, Baxter Fentriss considered the likely
market overlap and the Federal Reserve guidelines with regard to market
concentration and did not believe there to be an issue with regard to possible
antitrust concerns.

     Baxter Fentriss has relied, without any independent verification, upon the
accuracy and completeness of all financial and other information reviewed.
Baxter Fentriss has assumed that all estimates, including those as to possible
economics of scale, were reasonably prepared by management and reflect their
best current judgements.  Baxter Fentriss did not make an independent appraisal
of the assets or liabilities of either Twentieth or Horizon, and has not been
furnished such an appraisal.

     No company or transaction used as a comparison in the above analysis is
identical to Twentieth, Horizon, or the Merger.  Accordingly, an analysis of the
results of the foregoing necessarily involves complex considerations and
judgments concerning differences in financial and operating characteristics of
the companies and other factors that could affect the public trading value of
the companies used for comparison in the above analysis.

     COMPENSATION OF BAXTER FENTRISS.  Baxter Fentriss has been, or will be,
paid (i) an advisory fee of $15,000, (ii) a merger fee, based on successful
completion of the proposed merger, equal to 0.90% of aggregate consideration
received by Twentieth or shareholders of Twentieth, (iii) a fairness opinion fee
of $50,000, and (iv) reasonable out-of-pocket expenses for its services. The
merger fee will be reduced by the amount of the fairness opinion fee in the
event of a successful transaction.  Twentieth has agreed to indemnify Baxter
Fentriss against certain liabilities, including certain liabilities under
federal securities laws.

OPINION OF ROBINSON-HUMPHREY

     GENERAL.  As part of its investment banking business, Robinson-Humphrey is
regularly engaged in the valuation of securities in connection with mergers and
acquisitions, negotiated underwritings, secondary distributions of listed and
unlisted securities, private placements, and valuations for estate, corporate
and other purposes.  Horizon's Board of Directors decided to retain
Robinson-Humphrey to act as Horizon's financial adviser in connection with the
Merger based upon Robinson-Humphrey's experience as a financial advisor in
mergers and acquisitions of financial institutions, particularly transactions in
the Southeastern region of the U.S., and its knowledge of


                                       31

<PAGE>   46
financial institutions and Horizon in particular. In connection with its
engagement by Horizon, Robinson-Humphrey has rendered an opinion to Horizon's
Board of Directors that, based on the matters set forth therein, consideration
to be given pursuant to the Merger is fair, from a financial point of view, to
Horizon.  The text of such opinion is set forth in Appendix II to this Proxy
Statement and should be read in its entirety by the shareholder of Horizon.

     The consideration to be given to Twentieth shareholders in the Merger was
determined by Twentieth and Horizon in their negotiations.  No limitations were
imposed upon Robinson-Humphrey by Horizon's Board of Directors or its management
with respect to the investigations made or the procedures followed by
Robinson-Humphrey in rendering its opinion.

     In connection with rendering its opinion to Horizon's Board of Directors,
Robinson-Humphrey performed a variety of financial analyses.  However, 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 summary description.  Robinson-Humphrey, in
conducting its analysis and in arriving at its opinion, has not conducted a
physical inspection of any of the properties or assets of Twentieth, and has not
made or obtained any independent valuation or appraisals of any properties,
assets or liabilities of Twentieth.  Robinson-Humphrey has assumed and relied
upon the accuracy and completeness of the financial and other information that
was provided to it by Twentieth or that was publicly available.
Robinson-Humphrey's opinion is necessarily based on economic, market and other
conditions as in effect on, and the information made available to it as of the
date of  its analysis.

     VALUATION METHODOLOGIES.  In connection with its opinion on the Merger and
the presentation of that opinion to Horizon's Board of Directors,
Robinson-Humphrey performed three valuation analyses with respect to Twentieth:
(i) a comparison with comparable publicly traded companies; (ii) an analysis of
comparable prices and terms of recent transactions involving financial
institutions buying banks; and (iii) a discounted cash flow analysis.  For
purposes of the comparable company and comparable transaction analyses,
Horizon's stock was valued at Forty Dollars ($40.00) per share, which was the
bid price for the stock on February 6, 1996 at the time Robinson-Humphrey
performed its analysis. Based on the Exchange Ratio of 1.01 Horizon shares for
each Twentieth share outstanding, the implied purchase price per share for
Twentieth is Forty Dollars and Forty Cents ($40.40).

     For the Comparable Company Analysis and the Comparable Transaction
Analysis, Robinson-Humphrey examined, among other things, the implied Forty
Dollars and Forty Cents ($40.40) purchase price to the book value, tangible
book, latest twelve months' earnings and assets of Twentieth.  The valuation
methodologies are discussed briefly below.

     COMPARABLE COMPANY ANALYSIS.  In performing its comparable company
     analysis, Robinson-Humphrey analyzed the value of Twentieth's common stock
     relative to publicly traded banks that had total assets comparable to
     Twentieth.  The institutions included in the comparison to Twentieth
     consisted of two groups:  (1) banks located in the Southeast with assets
     between $200 million and $400 million and (2) banks across the U.S. with
     assets between $200 million and $400 million.


                                       32
<PAGE>   47
     Among the market trading information compared was market price to book
     value, tangible book value and the latest twelve (12) months earnings per
     share. Robinson-Humphrey calculated the average multiples for the
     comparable companies and then applied a takeover premium of 25% (takeover
     price compared to trading price) to those multiples.  The average trading
     multiples to book value for Southeastern banks and nationwide banks are
     1.61x and 1.56x, respectively.  Adding the 25% premium to these multiples
     would produce takeover multiples of 2.01x and 1.95x, respectively, compared
     to the multiple of approximately 2.19x book value represented by the
     consideration to be received by Twentieth shareholders in the Merger.

     The average trading multiples to tangible book value per share for
     Southeastern banks and nationwide banks are 1.72x and 1.62x, respectively.
     Applying the 25% premium to these multiples would produce takeover
     multiples of 2.15x and 2.03x, respectively, compared to a multiple of
     approximately 2.23x tangible book value in the Merger.  The average trading
     multiples to latest twelve (12) months earnings for Southeastern banks and
     nationwide banks are 16.1x and 15.5x, respectively.  Adding the 25% premium
     to these multiples would produce takeover multiples of 20.1x and 19.4x,
     respectively, compared to 20.7x for the Merger.

     COMPARABLE TRANSACTION ANALYSIS.  Robinson-Humphrey performed three (3)
     analyses of premiums paid for selected banks with comparable
     characteristics to Twentieth.  Comparable transactions were considered to
     be (i) a total of seven (7) transactions since January 1, 1994 where the
     seller was a West Virginia bank; (ii) a total of twelve (12) transactions
     since January 1, 1995, where the seller was a Southeastern bank with assets
     between $200 million and $400 million; and (iii) a total of  thirty-four
     (34) transactions since January 1, 1995 where the seller was a U.S. bank
     with assets between $200 million and $400 million.  When determining if a
     transaction is fair, from a financial point of view, to an institution's
     shareholders, Robinson-Humphrey compares the proposed transaction with
     other transactions in the marketplace with similar characteristics.  Four
     (4) ratios that are considered by Robinson-Humphrey the most determinative
     in this fairness analysis are price/book value, price/tangible book value,
     price/earnings per share, and price as a percentage of total assets.  No
     one ratio, however, is determinative on its own, but rather the performance
     of the other ratio analyses must be reviewed.

     Based on the first of the foregoing transactions, merger agreements since
     January 1, 1994 where the seller was a West Virginia bank, the analysis
     yielded a range of transaction values to book value of 1.24x to 2.78x, with
     a mean of 1.88 x and a median of 1.84x.  These compare to a transaction
     value for the Merger of approximately 2.19x of Twentieth book value as of
     December 31, 1995.

     In addition, the analysis yielded a range of transaction values as a
     percentage of tangible book value for the comparable transactions ranging
     from 1.24x to 3.29x, with a mean of 1.95x and a median of 1.84x.  These
     compare to a transaction value to tangible book at December 31, 1995 of
     approximately 2.23x for the Merger.


                                       33
<PAGE>   48
     Furthermore, the analysis yielded a range of transaction values as a
     multiple of trailing twelve (12) month earnings per share.  These values
     ranged from 8.07x to 34.87x, with a mean of 19.71x and a median of 18.20x.
     These compare to a transaction value to the December 31, 1995 trailing
     twelve (12) months earnings per share of 20.73x for the Merger.

     Lastly, the analysis yielded a range of transaction values as a percentage
     of total assets for the comparable transactions ranging from 11.05 percent
     to 30.62 percent, with a mean of 20.99 percent and a median of 22.81
     percent. These compare to a transaction value to total assets at December
     31, 1995 of approximately 21.85 percent for the Merger.

     Based on the second of the foregoing transactions, merger agreements since
     January 1, 1995, where the seller was a Southeastern bank with assets
     between $200 million and $400 million, the analysis yielded a range of
     transaction values to book value of 1.54x to 3.49x, with a mean of 2.25x
     and a median of 2.26x.  These compare to a transaction value for the Merger
     of approximately 2.19x Twentieth book value as of December 31, 1995.

     In addition, the analysis yielded a range of transaction values as a
     percentage of tangible book value for the comparable transactions ranging
     from 1.57x to 4.15x, with a mean of 2.51x and a median of 2.43x.  These
     compare to a transaction value to tangible book at December 31, 1995 of
     approximately 2.23x for the Merger.

     Furthermore, the analysis yielded a range of transaction values as a
     multiple of trailing twelve (12) months earnings per share.  These values
     ranged from 13.29x to 26.54x with a mean of 19.58x and a median of 18.56x.
     These compare to a transaction value to the December 31, 1995 trailing
     twelve (12) months earnings per share of 20.73x for the Merger.

     Lastly, the analysis yielded a range of transaction values as a percentage
     of total assets for the comparable transactions ranging from 9.02 percent
     to 25.92 percent, with a mean of 16.85 percent and a median of 17.02
     percent. These compare to a transaction value to total assets at December
     31, 1995 of approximately 21.85 percent for the Merger.

     Based on transactions since January 1, 1995, where the seller was a U. S.
     bank, the analysis yielded a range of transaction values to book value of
     1.17x to 3.49x, with a mean of 2.12x and a median of 2.17x.  These compare
     to a transaction value for the Merger of approximately 2.19x Twentieth book
     value as of December 31, 1995.

     In addition, the analysis yielded a range of transaction values as a
     percentage of tangible book value for the comparable transactions ranging
     from 1.17x to 4.15x, with a mean of 2.25x and a median of 2.20x.  These
     compare to a transaction value to tangible book at December 31, 1995 of
     approximately 2.23x for the Merger.


                                       34
<PAGE>   49
     Furthermore, the analysis yielded a range of transaction values as a
     multiple of trailing twelve (12) months earnings per share.  These values
     ranged from 12.69x to 26.95x with a mean of 19.11x and a median of 18.03x.
     These compare to a transaction value to the December 31, 1995 trailing
     twelve (12) months earnings per share of 20.73x for the Merger.

     Lastly, the analysis yielded a range of transaction values as a percentage
     of total assets for the comparable transactions ranging from 7.84 percent
     to 27.28 percent, with a mean of 16.65 percent and a median of 16.19
     percent. These compare to a transaction value to total assets at December
     31, 1995 of approximately 21.85 percent for the Merger.

     No company or transaction used in the comparable company analyses or
     comparable transaction analyses is identical to Twentieth.  Accordingly, an
     analysis of the foregoing necessarily involves complex consideration and
     judgments, as well as other factors that affect the public trading value or
     the acquisition value of the company to which it is being compared.

     DISCOUNTED CASH FLOW ANALYSIS.  Using discounted cash flow analysis,
     Robinson-Humphrey estimated the present value of the future stream of
     after-tax cash flows that Twentieth could produce through 1999, under
     various circumstances, assuming that Twentieth performed in accordance with
     the earnings/return projections of management.  Robinson-Humphrey estimated
     the terminal value for Twentieth at the end of the period by applying
     multiples of earnings ranging from 10.0 to 12.0x and then discounting the
     cash flow streams, dividends paid to shareholders and terminal value using
     differing discount rates (ranging from 11.0 percent to 13.0 percent) chosen
     to reflect different assumptions regarding the required rates of return of
     Twentieth and the inherent risk surrounding the underlying projections.
     This discounted cash flow analysis indicated a reference range of $64.7
     million to $75.6 million, or $35.93 to $41.98 per share, for Twentieth.
     These compare to the value implied by the Exchange Ratio of $40.40, based
     on the market value of Horizon common stock as of February 6, 1996.  This
     fact, among others, contributes to Robinson-Humphrey's opinion that the
     Merger is fair from a financial point of view to the Horizon shareholders.

     COMPENSATION OF ROBINSON-HUMPHREY.  Pursuant to an engagement letter dated
January 23, 1996 between Horizon and Robinson-Humphrey, Horizon agreed to pay
Robinson-Humphrey a $150,000 Fairness Opinion Fee, which Fee has been paid by
Horizon and a total Success Fee of $425,000, which is to be paid by Horizon upon
consummation of the Merger.  The $150,000 Fairness Opinion Fee will be credited
against the Success Fee.  Horizon has also agreed to indemnify and hold harmless
Robinson-Humphrey and its officers and employees against certain liabilities in
connection with its services under the engagement letter, except for liabilities
resulting from the gross negligence of Robinson-Humphrey.


                                       35
<PAGE>   50
GENERAL DESCRIPTION OF THE TERMS OF THE MERGER AGREEMENT

     At the Effective Time, Twentieth will merge with and into Horizon and the
shareholders of Twentieth who do not dissent will receive, subject to
adjustment,  1.01 shares of Horizon stock for each share of Twentieth stock they
own.  As a result of the Merger, Twentieth Street Bank will become a
wholly-owned subsidiary of Horizon  and will continue to operate as an
independent bank from its existing offices.  The four existing subsidiaries of
Horizon will continue to operate as independent banks which are wholly owned
subsidiaries of Horizon.

     Upon consummation of the Merger, each of the members of the Board of
Directors of Twentieth Street Bank is expected to remain a director of the Bank.
In addition, Horizon shall appoint two (2) individuals to sit on the Board of
Directors of Twentieth Street Bank.  These two (2) new individuals will be Frank
S. Harkins, Jr. and Philip L. McLaughlin.  At the Effective Time, six (6)
individuals selected by Twentieth shall be appointed as additional members to
the Board of Directors of Horizon.  Twentieth has indicated that it plans to
select Jack G. Bazemore, William C. Dolin, Clarence E. Martin, B. C. McGinnis,
III, Jack McGinnis, and Thomas L. McGinnis for appointment to the Horizon Board
of Directors. and from these six (6), three (3) individuals shall be appointed
as additional members to Horizon's Executive Committee.  The individuals to be
appointed to the Horizon Executive Committee will be William C. Dolin, B. C.
McGinnis, III, and Thomas L. McGinnis. See, "THE MERGER -- Directors of
Horizon".  For a description of the persons who management for Horizon will
nominate for election as directors at the Horizon Shareholders' Meeting see
"MEETING OF THE HORIZON SHAREHOLDERS -- Election of Directors."

     Assuming all conditions to the Merger are satisfied, (See, "THE MERGER --
Conditions to Consummation") the closing of the Merger will occur on a date (the
"Closing Date") specified by Horizon after the expiration of any and all
required waiting periods following the effective date of the required approvals
of the Merger by governmental or regulatory authorities.  At the closing,
Twentieth and Horizon shall take such actions, including execution of a
Certificate of Merger, as required by the Merger Agreement and by law in order
to consummate the Merger and to cause it to become effective.  The Effective
Time shall be the date and time the Merger shall become effective as specified
in the Certificate of Merger filed with the Secretary of State of West Virginia.
In no event shall the Effective Time be more than ten (10) days following the
Closing Date.

     The Merger Agreement provides that, whether or not the transactions
contemplated thereby are consummated, each party will pay its own costs and
expenses incurred in connection with the Merger Agreement and the transactions
contemplated thereby.  However, all costs incurred in connection with the
preparation, printing and mailing of this Prospectus/Joint Proxy Statement shall
be deemed to be incurred and shall be paid fifty percent (50%) each by Horizon
and Twentieth.

EXCHANGE RATIO

     Assuming the Merger is effected, at the Effective Time, each outstanding
share of Twentieth stock (other than shares to which dissenters rights have been
properly exercised) shall  be converted, subject to adjustment, into 1.01 shares
of Horizon stock (the "Exchange Ratio").  See, "THE MERGER -- Adjustment of
Exchange Ratio".  In the event of any stock split, stock dividend or other


                                       36
<PAGE>   51
recapitalization by Horizon prior to the Effective Time the Exchange Ratio shall
be adjusted proportionately.

ADJUSTMENT OF EXCHANGE RATIO

     The Merger Agreement provides that in the event the average closing price
for Horizon common stock over the ten (10) trading days prior to the Effective
Time rises and is more than $46.00 per share, then the Exchange Ratio shall
become $46.46 divided by the average closing price over the ten (10) trading
days.  In such event, the Board of Directors of Twentieth can either accept the
lower Exchange Ratio or terminate the Merger Agreement.  If the average closing
price for Horizon common stock over the ten (10) trading days prior to the
Effective Time falls and is less than $34.00 per share, then the Exchange Ratio
shall become $34.34 divided by the average closing price over the ten (10)
trading days.  In such event, the Board of Directors of Horizon can either
permit the higher Exchange Ratio or terminate the Merger Agreement.   The party
having the option to proceed at the adjusted Exchange Ratio must, no later than
seventy-two (72) hours after the last of the subject ten (10) trading days,
grant its consent to proceed.

     It is anticipated that if the Exchange Ratio decreases because the average
closing price during the subject ten day trading period exceeds $46.00 per
share, the Board of Directors of Twentieth will elect to proceed at the adjusted
Exchange Ratio.  Although the Exchange Ratio will have decreased, the value of
the Horizon stock to be received by the Twentieth Shareholders will have
increased from the value at the time the Merger Agreement was executed.  It is
further anticipated that if the Exchange Ratio increases because the average
closing price of Horizon stock is less than $34.00 per share, the Board of
Directors of Horizon will elect not to proceed with the Merger.  The Merger at
an increased Exchange Ratio would not provide the Horizon shareholders with the
economic benefits anticipated from the Merger.

FRACTIONAL SHARES

     No fractional shares of Horizon stock will be issued in connection with the
Merger.  In the event the exchange of shares of Twentieth stock results in the
creation of fractional shares, in lieu of the issuance of fractional shares of
Horizon stock, Horizon will deliver cash to its transfer agent (the "Transfer
Agent") in an amount equal to the aggregate Market Value of all such fractional
shares and in such event the Transfer Agent shall divide such cash among and
remit it, WITHOUT INTEREST, to the former shareholders of Twentieth in
accordance with their respective interests.  Market Value for purpose of this
calculation is the average of the reported daily closing prices of Horizon stock
on the Nasdaq National Market during the period of ten (10) consecutive trading
days ending on the business day immediately preceding the date of the Twentieth
Shareholders' Meeting.

EXCHANGE OF TWENTIETH STOCK CERTIFICATES

     At the Effective Time, Horizon shall issue and deliver to its Transfer
Agent one (1) certificate representing the aggregate number of whole shares of
Horizon stock into which outstanding shares of Twentieth stock have been
converted.  As promptly as practicable following the Effective Time, Horizon
will mail to each former Twentieth shareholder of record a letter of instruction
and transmittal materials (the "Transmittal Letter") regarding the procedures to
be followed in the


                                       37
<PAGE>   52
exchange of certificates of Twentieth stock for certificates of Horizon stock.
When the Transmittal Letter is received, holders of Twentieth stock must follow
the instructions contained therein.

     Upon surrender of certificates representing shares of Twentieth stock to
Horizon, the Transfer Agent will issue, register and deliver a certificate
representing the number of whole shares of Horizon stock to which each such
shareholder is entitled.  Each holder of Twentieth stock entitled to receive a
fraction of a share of Horizon stock shall receive cash in the amount provided
in the Merger Agreement.

     A certificate for Horizon stock will be issued only in the name in which
the certificate for Twentieth stock surrendered for exchange is registered.
Horizon will issue a single certificate for shares of Horizon stock to which a
Twentieth shareholder is entitled.

     After the Effective Time and until surrender of Twentieth stock to the
Transfer Agent, each certificate that represented outstanding Twentieth stock
immediately prior to the Effective Time will be deemed to evidence ownership of
the number of shares of Horizon stock into which the shares represented by such
certificates have been exchanged and any right to receive cash in lieu of
fractional shares into which such shares would have converted.  NO SHAREHOLDER
WILL, HOWEVER, HAVE ANY VOTING RIGHTS OR  RECEIVE DIVIDENDS OR OTHER
DISTRIBUTIONS ON HORIZON STOCK UNTIL THE SURRENDER FOR EXCHANGE OF HIS OR HER
CERTIFICATES REPRESENTING SHARES OF TWENTIETH STOCK.  Upon surrender of
certificates representing Twentieth stock, each shareholder will receive the
number of shares of Horizon stock to which such shareholder is entitled and cash
in lieu of any fractional share, plus any dividends or other distributions on
Horizon stock which are payable to holders as of any record date following the
Effective Time.  NO INTEREST WILL BE PAYABLE WITH RESPECT TO CASH TO BE PAID IN
LIEU OF FRACTIONAL SHARES, IF ANY, OR WITHHELD DIVIDENDS OR OTHER DISTRIBUTIONS
OR CASH PAYMENTS IN RESPECT OF HORIZON STOCK PAYABLE AFTER THE EFFECTIVE TIME.

LOST CERTIFICATES

     Any shareholder of Twentieth whose stock certificate evidencing his or her
shares of Twentieth stock has been lost, destroyed, stolen or is otherwise
missing, shall be entitled to receive a Horizon stock certificate for his or her
exchanged shares upon compliance with any conditions imposed by the Transfer
Agent or Horizon.  Such conditions may include a requirement that the former
Twentieth shareholder provide a lost instruments indemnity or surety bond in
form, substance and amount satisfactory to the Transfer Agent and Horizon.

CONDITIONS TO CONSUMMATION

     The respective obligations of Horizon and Twentieth to consummate the
Merger are subject to the satisfaction of certain conditions, including, without
limitation, approval of the shareholders of Twentieth and Horizon; approval of
the Boards of Directors of Twentieth and Horizon; the receipt of  all necessary
regulatory approvals and expiration of all notice periods and waiting periods
required after the granting of any such approval, without any condition or
requirement contained in any such approval which, in the reasonable opinion of
Horizon, is materially disadvantageous or burdensome or would so adversely
impact the business or economic benefits of the Merger Agreement as to


                                       38
<PAGE>   53
render consummation of the Merger inadvisable; the absence of any order,
decree, or injunction which enjoins or prohibits consummation of the
transactions contemplated by the Merger Agreement, any pending or threatened
investigation of the Merger by the United States Department of Justice or any
actual or threatened litigation under federal antitrust laws relating to the
Merger, any suit, action, or proceeding pending or threatened in which it is
sought to restrain or prohibit the parties from consummating the Merger, or any
other suit, claim or proceeding pending or threatened against any of the
parties or any of their respective officers or directors which shall reasonably
be considered by any of the parties to be materially burdensome in relation to
the proposed Merger or materially adverse in relation to the financial
condition, results of operations, prospects, businesses, assets, loan
portfolios, investments, properties or operations of any of the parties and
which has not been dismissed or terminated within ninety (90) days of the
institution thereof; the accuracy of the representations and warranties set
forth in the Merger Agreement as of the Effective Time as if made on and as of
such date; the performance in all material respects of all material obligations
and compliance with all material covenants imposed on Horizon and Twentieth by
the Merger Agreement; the absence of a material adverse change in the financial
conditions, operations, businesses, assets, loan portfolios, investments,
properties or operations of Horizon or Twentieth; the compliance in all
material respects with all federal and state laws and regulations applicable to
the Merger, in which the violation of or failure to comply with any such law or
regulation could have a material adverse effect on the financial conditions,
operations, prospects, businesses, assets, loan portfolios, investments or
properties of Twentieth or Horizon; effectiveness of the Registration Statement
under the Securities Act and the absence of issuance, or threat of issuance, of
a stop order suspending such effectiveness, and Horizon's satisfaction of all
actions required by applicable state securities laws to cause the issuance of
Horizon stock in the Merger to be duly qualified or registered under such laws
or to be exempt therefrom; receipt by Horizon of written agreements from each
of the affiliates of Twentieth regarding restrictions on resales by such
affiliates; execution and delivery of a Certificate of Merger to effect the
Merger; receipt by Twentieth of all required consents to the assignment to
Horizon of all rights and obligations under any real property leases and any
personal property leases of Twentieth and Twentieth Street Bank, in such form
and substance as shall be satisfactory to Horizon; confirmation in writing that
neither Twentieth nor Twentieth Street Bank are in default under the terms and
conditions of any real property lease or personal property lease; that the
Merger is completed by December 31, 1996; and that neither Twentieth's
shareholders nor Horizon shareholders shall have exercised dissenter's rights
in an amount which would prevent pooling of interests.

     It also is a condition to consummation that Twentieth will have received
the opinion of Baxter Fentriss, dated as of a date prior to the mailing of this
Prospectus/ Joint Proxy Statement, to the effect that the terms of the Merger
are fair from a financial point of view to Twentieth and its shareholders. See,
"THE MERGER -- Opinion of Baxter Fentriss."  It is also a condition to
consummation that Horizon will have received the opinion of Robinson-Humphrey,
dated as of a date prior to the mailing of this Prospectus/Joint Proxy
Statement, that the Merger is fair from a financial standpoint to the
shareholders of Horizon.  See, "THE MERGER -- Opinion of Robinson - Humphrey."

     Either Twentieth or Horizon may waive in writing certain of the conditions
imposed with respect to its or their respective obligations to consummation of
the Merger upon a determination by the waiving party that such waiver would not
adversely affect the interests of the waiving party or


                                       39
<PAGE>   54
its shareholders.  The requirements that the Merger be approved by Twentieth's
shareholders, that all required regulatory approvals be received and that all
notice periods and waiting periods required after such regulatory approvals be
expired cannot be waived.

TERMINATION

     The Merger Agreement may be terminated at any time prior to the Effective
Time by the mutual consent of the parties.  In addition, any party, upon written
notice to the other party, may elect to terminate the Merger Agreement if (i)
the conditions precedent to the obligations of such party to consummate the
transactions contemplated by the Merger Agreement have not been satisfied or
waived; (ii) the shareholder approvals required to consummate the Merger are not
obtained, or (iii) if any of the regulatory applications for prior approval is
denied and the time period for appeals and requests for reconsideration of such
denial has run.  Either party may elect to terminate the Merger Agreement upon a
breach by the other party of (i) any covenant, obligation, agreement or
undertaking contained in the Merger Agreement or (ii) any representation or
warranty contained in the Merger Agreement, if such breach has not been cured by
the earlier of thirty (30) days after the date on which written notice of such
breach is given to the party committing such breach.

     In the event the Merger Agreement is terminated by Horizon as a result of a
breach of a representation or warranty by Twentieth, or the failure of Twentieth
to perform, or a violation by Twentieth of, any of its obligations, agreements
or covenants contained in the Merger Agreement, in addition to other remedies
available to Horizon at law or equity, Twentieth shall be obligated to pay
Horizon Two Hundred Thousand Dollars ($200,000).  In the event the Merger
Agreement is terminated by Twentieth as a result of a breach of a representation
or warranty by Horizon, or the failure of Horizon to perform, or a violation by
Horizon of, any of its obligations, agreements or covenants contained in the
Merger Agreement, Horizon shall be obligated to reimburse Twentieth for up to
(but not more than) One Hundred Thousand Dollars ($100,000) of Twentieth's
out-of-pocket expenses incurred in the transaction.

     The Merger Agreement also provides that if the average closing price for
Horizon stock over the ten (10) trading days prior to the Effective Time is more
than $46.00, then the Exchange Ratio shall become $46.46 divided by the average
closing price over the ten (10) trading days.  In this event, the Board of
Directors of Twentieth can accept the lower Exchange Rate or terminate the
Merger Agreement.  If, on the other hand, the average closing price for Horizon
over such ten (10) trading days period is less than $34.00, then the Exchange
Ratio shall become $34.34 divided by the average closing price over the ten (10)
trading days.  In that event, the Board of Directors of Horizon can terminate
the Merger Agreement or permit the higher Exchange Ratio.  The Board of
Directors of the party having the option to proceed at the modified Exchange
Ratio must grant its consent to proceed no later than seventy-two (72) hours
after the last of the subject ten (10) trading days.  See, "THE MERGER --
Adjustment to Exchange Ratio."

AMENDMENT

     The Merger Agreement may be amended, modified or supplemented in writing by
mutual agreement of Horizon and Twentieth, without shareholder approval,
provided that such amendment


                                       40
<PAGE>   55
or supplement must be approved by a majority of the respective Boards of
Directors and any such amendment cannot affect the Exchange Ratio.

CONDUCT OF TWENTIETH'S BUSINESS PRIOR TO THE EFFECTIVE TIME

     Under the terms of the Merger Agreement, from the date of the Merger
Agreement until consummation or termination thereof, Twentieth may not, without
the prior written consent of Horizon, among other things: (i) carry on its
business other than in the regular and usual course in substantially the same
manner as it was conducted prior to the date of the Merger Agreement; (ii)
declare or pay any dividends or make any other distributions in respect of its
capital stock except in the same manner and in amounts no greater than were paid
in 1995; (iii) make any change in its capital stock or issue, sell or redeem any
shares of its capital stock or any options related thereto; (iv) effect any
recapitalization, reclassification, stock dividend, stock split or like change
in capitalization; (v) amend its Articles of Incorporation or Bylaws; (vi)
impose or suffer the imposition, on any of its assets, of any lien or
encumbrance or permit such lien to remain to exist (other than in the ordinary
course of business consistent with its past practices); (vii) waive, release or
compromise any material rights other than in the ordinary course of business;
(viii) acquire, or merge with, any branch or acquire any significant part of the
assets of another person or entity or open any new branch office; (ix) increase
the compensation or benefits of or pay any bonus or other special or additional
compensation, to any of its directors, officers or employees other than standard
customary adjustments and merit increases which in the aggregate do not exceed
One Hundred Twenty Thousand Dollars ($120,000) including the 1995 officer
bonuses; (x) adopt, enter into, become bound by or substantially modify any
employment or consulting agreement or employee benefit, incentive, profit
sharing, change in control, "golden parachute," pension, retirement, stock
option or welfare contract, plan or arrangement or similar contract, plan or
arrangement in respect of any of its current or former directors, officers,
consultants or employees; (xi) solicit or encourage inquiries or proposals with
respect to, furnish any information relating to, or participate in any
negotiations or discussions concerning, any acquisition or purchase of all or a
substantial portion of the assets of, or a substantial equity interest in,
Twentieth or Twentieth Street Bank; (xii) enter into (a) any material contract
or agreement not made in the ordinary course of business, including, without
limitation, agreements with governmental or regulatory authorities, (b) any
contract or commitment which would obligate Twentieth to make expenditures of
more than Ten Thousand Dollars ($10,000), (c) enter into or become bound by any
note or other agreement relating to the borrowing of money by Twentieth or
Twentieth Street Bank or agreements or contracts pursuant to which Twentieth or
Twentieth Street Bank would guarantee, endorse or otherwise become liable for
the debt or liability of another person, except in the ordinary course of
business consistent with past practice, or (d) any contract, agreement or
understanding with a labor union; (xiii) change its lending, investment or
asset-liability management policies in any material respect; (xiv) generally
change its accounting practice, procedures and policies, except as required by
generally accepted accounting principles or governmental regulations; (xv) sell
or lease or enter into a contract to sell or lease any real estate, any
equipment, or any other fixed or capital asset having a value on its books or a
fair market value, whichever is greater, of more than Ten Thousand Dollars
($10,000) for any individual item or asset, or more than Twenty-Five Thousand
Dollars ($25,000) in the aggregate for all assets; (xvi) purchase or lease, or
enter into a contract to purchase or lease, any equipment or any other fixed
asset having a purchase price in excess of  Fifty Thousand Dollars ($50,000) for
any individual item or more than One Hundred


                                       41
<PAGE>   56
Thousand Dollars ($100,000) in the aggregate for all items; (xvii) enter into a
purchase commitment for supplies or services which calls for prices of goods or
fees for services materially higher than current market prices or which
obligate Twentieth or Twentieth Street Bank for a period longer than twelve
(12) months under such commitment; (xviii) sell, purchase or repurchase or
enter into an agreement to do so with respect to any loan or other receivable
or participation in any loan or other receivable; or (xix) sell or enter into a
contract to sell any asset of Twentieth or Twentieth Street Bank including any
trademark or trade name, or assign its right to or otherwise give permission or
consent to use or do business under the name of Twentieth or Twentieth Street
Bank or any name similar or release, or waive any license or right granted by
any other person to use any trademark or trade name or intellectual property
right of Twentieth or Twentieth Street Bank.

REGULATORY CONSIDERATIONS

     The Merger is subject to certain regulatory approvals, as set forth below.
To the extent that the following information describes statutes and regulations,
it is qualified in its entirety by reference to such statutes and regulations
and the regulations promulgated under such statutes.

     The Merger is subject to approval by the Federal Reserve under the Bank
Holding Company Act of 1956, as amended (the "BHC Act"), which permits a bank
holding company, such as Horizon, to merge with another bank holding company,
such as Twentieth, if the Federal Reserve has approved of the transaction based
upon its review of the financial and managerial resources and future prospects
of the existing and proposed institutions and the convenience and needs of the
community to be served.  See, "SUPERVISION, REGULATION AND GOVERNMENTAL POLICY -
Bank Holding Company Regulation.  This consideration includes an evaluation by
the Federal Reserve as to whether the Merger would result in a monopoly or
otherwise would substantially lessen competition or impair the financial and
managerial resources and future prospects of Horizon or Twentieth.  In addition,
the Federal Reserve must take into account the records of Horizon and Twentieth
in meeting the credit needs of the entire community, including low and
moderate-income neighborhoods, served by such institutions.

     The Merger is also subject to approval by the West Virginia Board.  A
public hearing must be held by the West Virginia Board to consider the Merger.
The West Virginia Board must make an examination and investigation of various
factors and must determine  that the Merger will not result in a monopoly or
further any attempt to monopolize the business of banking in any section of West
Virginia, that the Merger would not substantially lessen competition, unless the
anticompetitive effects are clearly outweighed in the public interest by action
taken in meeting the convenience and needs of the serviced community, and,
taking into consideration the financial and managerial resources and further
prospects of the companies and banks concerned, and that the Merger would be in
the best interest of the shareholders or customers involved.

     The Merger is subject to review by the United States Department of Justice
which may challenge the Merger on antitrust grounds.

     If any condition is imposed which, in the reasonable opinion of Horizon is
materially disadvantageous or burdensome or adversely affects the anticipated
economic or business benefits


                                       42
<PAGE>   57
of the Merger Agreement to Horizon as to render consummation of the Merger
inadvisable, the Merger Agreement permits Horizon to terminate the Merger
Agreement.  See, "THE MERGER -- Conditions to Consummation."

     Horizon and Twentieth are not aware of any other governmental approvals or
actions that are required for consummation of the Merger except as described
above.  Should any such approval or action be required, it is presently
contemplated that such approval or action would be sought or taken.  There can
be no assurance that any such approval or action, if needed, could be obtained,
would not delay consummation of the Merger or would not be conditioned in a
manner that would cause Horizon to abandon the Merger.

     Twentieth Street Bank has entered into and continues to operate under a
Memorandum of Understanding with the Federal Deposit Insurance Corporation dated
December 12, 1994 as a  result of certain compliance violations discovered
during the bank's examination in July, 1994.  The Memorandum of Understanding
will remain in place until, at least, a full scope examination is performed by
the FDIC which is scheduled for the third quarter of 1996.  There is no guaranty
that the Memorandum of Understanding will be removed at that time, and it is
possible that the Memorandum of Understanding will remain in effect after the
Effective Time.  A compliance visitation conducted on May 5, 1995 indicated that
Twentieth Street Bank's compliance with governing rules and regulations had
improved significantly and that Twentieth Street Bank's Board of Directors and
senior management had dedicated the necessary attention and resources to the
bank's compliance program.   See, "INFORMATION ABOUT TWENTIETH BANCORP, INC. --
Regulatory Matters."

EMPLOYMENT CONTRACTS

     Under the Merger Agreement, Horizon has consented and agreed that Twentieth
Street Bank may offer employment contracts (the "Employment Contracts") to B. C.
McGinnis, III, Thomas L. McGinnis, and Brian A. Shepherd.  Such Employment
Contracts shall be for employment by Twentieth Street Bank at the individual's
position, location and compensation as of January 1, 1996.  As of January 1,
1996, B. C. McGinnis, III  was employed by Twentieth Street Bank as President at
an annual salary of One Hundred Fifty-Five Thousand Six Hundred Dollars
($155,600.00), Thomas L. McGinnis was employed as Executive Vice President at an
annual salary of One Hundred Thousand Dollars ($100,000.00), and Brian A.
Shepherd as Senior Vice President and Cashier at an annual salary of
Seventy-Three Thousand Dollars ($73,000.00).  It is anticipated that Employment
Contracts will be entered into with each of the three individuals.  Given the
long history of employment of these individuals by Twentieth Street Bank,
management of Twentieth and Horizon believe that their continued employment is
in the best interest of Twentieth and Horizon.

     The term of the employment contracts offered to B. C. McGinnis, III and
Thomas L. McGinnis shall be three (3) years from the Effective Time and the term
of the Employment Contract offered to Brian Shepherd shell be two (2) years from
the Effective Time.  The Employment Contracts are to be substantially in the
form of Exhibit C attached to the Merger Agreement.  The Merger Agreement is
attached to this Prospectus/Joint Proxy Statement as Appendix I.  The form of
the Employment


                                       43
<PAGE>   58
Contract for B. C. McGinnis, III and Thomas L. McGinnis provide that in
addition to their salaries, they will be entitled to reimbursement for their
reasonable expenses associated with attendance at banking conventions, club
membership dues and continued use of a Twentieth Street Bank owned automobile
for business use.  B. C. McGinnis, III and Thomas L. McGinnis shall also be
eligible to participate in any additional plans, programs or benefits which
Twentieth Street Bank's Board of Directors makes available to its employees.

     The form of the Employment Contract for Brian A. Shepherd provides that in
addition to his salary, he will be entitled to reimbursement for his reasonable
expenses associated with attendance at banking conventions and club membership
dues.  Brian Shepherd shall also be eligible to participate in any additional
plans, programs or benefits which Twentieth Street Bank's Board of Directors
makes available to its employees. 

     During the first year of the Employment Contract, B. C. McGinnis, III,
Thomas L. McGinnis and/or Brian Shepherd may each terminate his employment with
Twentieth Street Bank and he will be paid his base salary for six (6) months,
during which time he may not compete with or be employed in competition to
Twentieth Street Bank. B. C. McGinnis, III, Thomas C. McGinnis and/or Brian
Shepherd may also terminate his Employment Contract at any time for "Good
Reason" as that term is defined in the Employment Contract.  If the Employment
Contract is terminated for "Good Reason" then he shall be paid his salary
through date of termination plus a monthly severance allowance equal to one
twelfth of his base salary for the remaining term of the Employment Contract.
If B. C. McGinnis, III, Thomas L. McGinnis and/or Brian Shepherd terminates his
Employment Contract for other than Good Reason, he will not have any right to
receive compensation or other benefits for any period after the termination
date.

     Twentieth Street Bank will have the right to terminate B. C. McGinnis, III,
Thomas L. McGinnis and/or Brian Shepherd's employment at any time for Good Cause
(as defined in the Employment Contracts).  If Twentieth Street Bank terminates
B. C. McGinnis, III, Thomas L. McGinnis and/or Brian Shepherd's employment for
Good Cause, he will not be entitled to receive compensation or other benefits
under the Employment Contract for any period after such termination.

DIRECTORS OF TWENTIETH STREET BANK

     The Board of Directors of Twentieth Street Bank following the Effective
Time is expected to consist of the current directors of Twentieth Street Bank
plus two (2) individuals named by Horizon.  Horizon intends to appoint Frank S.
Harkins, Jr. and Philip L. McLaughlin to Twentieth Street Bank's Board of
Directors if the Merger is consummated.  The directors of Twentieth Street Bank
are expected to continue to serve under the same terms and conditions, including
director fees, as are in place at the Effective Time.

DIRECTORS OF HORIZON

     After the Merger, the Directors of Horizon shall be the eighteen (18)
directors elected by the Horizon shareholders at the Horizon Shareholders'
Meeting and six (6) individuals selected by Twentieth.  Information regarding
the nominees proposed by management of Horizon for election at the Horizon
Shareholders' Meeting is set forth in "MEETING OF THE HORIZON SHAREHOLDERS --
Election of Directors".  Twentieth has indicated that it plans to select Jack G.
Bazemore, William C. Dolin, Clarence E. Martin, B. C. McGinnis, III, Jack
McGinnis and Thomas L.  McGinnis for appointment to the Horizon Board of
Directors. Information concerning these individuals is set forth below.


                                       44
<PAGE>   59
<TABLE>
<CAPTION>
                            SERVED            FAMILY
                            AS A              RELATIONSHIP
                            DIRECTOR OF       WITH OTHER     PRINCIPAL OCCUPATION OR
NAME                  AGE   TWENTIETH SINCE   NOMINEES       EMPLOYMENT LAST 5 YEARS
- ----                  ---   ---------------   --------       -----------------------
<S>                   <C>   <C>               <C>            <C>
Jack G. Bazemore      60    1990              None           President - Jabo Supply Corporation, Huntington, WV; Director -
                                                             The Twentieth Street Bank, Huntington, WV;
                                                             Director - Twentieth Bancorp, Inc., Huntington, WV

William C. Dolin      58    1983              None           President - Dolin Supply Co., Huntington, WV; Director -
                                                             The Twentieth Street Bank, Huntington, WV;
                                                             Director - Twentieth Bancorp, Inc., Huntington, WV

Clarence E. Martin    56    1994              None           Chief Executive Officer and Chief Financial Officer -
                                                             Arthur's Enterprises, Inc., Huntington, WV;
                                                             Director - The Twentieth Street Bank, Huntington, WV;
                                                             Director - Twentieth Bancorp, Inc., Huntington, WV

B. C. McGinnis, III   53    1983               (1)           President and Director - Twentieth Bancorp, Inc., Huntington, WV;
                                                             President and Director - The Twentieth Street Bank, Huntington, WV

Jack McGinnis         67    1983               (1)           President - Huntington Land Company, Barboursville, WV; Director -
                                                             The Twentieth Street Bank, Huntington, WV;
                                                             Director - Twentieth Bancorp, Inc., Huntington, WV

Thomas L. McGinnis    47    1990               (1)           Vice President and Director - Twentieth Bancorp, Inc., Huntington, WV;
                                                             Executive Vice President and Director  -
                                                             The Twentieth Street Bank, Huntington, WV

<FN>

(1) B. C. McGinnis, III and Thomas L. McGinnis are brothers.  Jack McGinnis is
    second cousin to B. C. McGinnis, III and Thomas L. McGinnis.

</TABLE>


                                       45
<PAGE>   60

RESTRICTIONS ON RESALES BY AFFILIATES

     The directors and executive officers of Twentieth, Twentieth Street Bank
and any shareholder owning 5% or more of Twentieth stock are deemed to be
"affiliates" of Twentieth.  Any sale or other disposition by such affiliates of
Horizon stock received by them pursuant to the Merger may be made only by
registration of such shares or in compliance with an exemption from the
registration requirements of the Securities Act.

     The obligation of Horizon and Twentieth to consummate the Merger is subject
to the condition that each affiliate of Twentieth must execute and deliver to
Horizon an agreement to the effect that each such person will not dispose of any
shares of Horizon stock to be received pursuant to the Merger in violation of
the Securities Act or the applicable rules and regulations of the SEC.

     This Prospectus/Joint Proxy Statement may not be used by any such affiliate
of Twentieth for the resale of any shares of Horizon stock received pursuant to
the Merger.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

     Horizon and Twentieth have each agreed to use their best efforts to cause
the Merger to qualify as a tax-free "reorganization" within the meaning of
Section 368(a)(1)(A) of the Internal Revenue Code of 1986 and that neither shall
take or permit its representatives to take any action that would cause the
Merger to fail to qualify as a tax free reorganization.  Horizon has received 
the opinion of Robinson & McElwee dated April 4, 1996 as to the tax effects of 
the transaction.

     The following is a summary discussion of the material federal income tax
consequences of the Merger to shareholders of Twentieth if the Merger qualifies
as a tax free reorganization.  The summary is based on the law as currently
constituted and is subject to change in the event of changes in the law,
including amendments to applicable statutes or regulations or changes in
judicial or administrative rulings some of which could be given retroactive
effect.  The summary does not address any foreign, state or local tax
consequences, except for certain West Virginia income tax consequences, nor does
it address all aspects of federal income taxation that may apply to the Merger.
Twentieth shareholders are urged, therefore, to consult their own tax advisors
as to the specific tax consequences to them of the Merger and the exchange of
their Twentieth stock for shares of Horizon stock, including, without
limitation, tax return reporting requirements, the application and effect of
federal, foreign, state and local and other tax laws, and the implications of
any proposed changes in the tax laws.

     There can be no assurance that the IRS could not successfully contest in
the courts  the qualification of the Merger as a tax free reorganization or that
legislative, administrative or judicial decisions or interpretations may not be
forthcoming that would significantly change the qualification


                                       46
<PAGE>   61
of the Merger as a tax free reorganization.  The IRS will not currently issue
private letter rulings concerning a transaction's qualification under certain
types of reorganizations or certain federal income tax consequences resulting
from such qualification.  Accordingly, no private letter ruling has been, nor
is it anticipated that such a ruling will be, requested from the IRS with
respect to the Merger.

     In the opinion of Robinson-McElwee the Merger of Twentieth with and into
Horizon will qualify as a statutory merger under the laws of West Virginia and a
tax-free reorganization within the meaning of Section 368(a)(1)(A) of the Code,
and:

     (i) No gain or loss will be recognized by Horizon or Twentieth by reason of
         the Merger;

    (ii) No gain or loss will be recognized by the shareholders of Twentieth
         upon receipt of Horizon stock  in exchange for their holdings of
         Twentieth stock;

   (iii) The tax basis in the Horizon stock received by a shareholder will be
         the same as the tax basis in the Twentieth stock surrendered in
         exchange therefor;

    (iv) The holding period for Horizon stock received in exchange for
         Twentieth stock will include the period during which the shareholder
         held the Twentieth stock surrendered in the exchange, provided that
         the Twentieth stock was held as a capital asset at the Effective Time;

     (v) The receipt of cash in lieu of a fractional share of Horizon stock will
         be treated as if the fractional share of Horizon stock was distributed
         as part of the exchange to the Twentieth shareholder and then redeemed
         by Horizon, resulting in capital gain or loss measured by the
         difference, if any, between the amount of cash received for such
         fractional share and the shareholder's basis in the fractional share;
         and,

    (vi) The receipt of cash by a Twentieth shareholder or a Horizon shareholder
         who exercises his or her statutory dissenter's rights, will be treated
         as having been received by the shareholder as a distribution in
         redemption of his or her stock.  If the redemption meets one of the
         four tests set forth in Section 302 of the Code, it will result in
         capital gain or loss measured by the difference, if any, between the
         amount of cash received for such stock and the shareholder's basis in
         the stock.  If the redemption does not meet one of the four tests of
         Section 302, such distribution will be treated as a dividend pursuant
         to Section 301 of the Code.

ACCOUNTING TREATMENT

     It is intended that Horizon will account for the Merger as a pooling of
interests for accounting and financial reporting purposes.  Under the pooling of
interests method of accounting, the assets and liabilities of Twentieth would be
added to those of Horizon at their recorded carrying amounts and the
shareholders' equity accounts of Horizon and Twentieth would be combined on
Horizon's consolidated balance sheet.  On a pooling of interests accounting
basis, income and other financial


                                       47
<PAGE>   62
statements of Horizon issued after consummation of the Merger would be restated
retroactively to reflect the consolidated combined financial position and
results of operations of Horizon and Twentieth as if the Merger had taken place
prior to the periods covered by such financial statements.  The unaudited pro
forma financial information contained in this Prospectus/Joint Proxy Statement
has been prepared using the pooling of interests accounting method to account
for the Merger.  The availability of accounting for the Merger as a pooling of
interests is a condition to consummation of the Merger.

DISSENTER'S RIGHTS

     The following summary does not purport to be a complete statement of the
procedures to be followed by Twentieth or a Horizon shareholder desiring to
exercise dissenters' appraisal rights as provided for under the West Virginia
Corporation Act and is qualified in its entirety by reference to the provisions
of West Virginia Code Sections 31-1-122 and 31-1-123, the full texts of which
are attached as Appendix III to this Prospectus/Joint Proxy Statement. Although
the West Virginia Corporation Act does not contain any specific provisions as to
exclusivity, in the absence of a showing of fraud, unfairness, or illegality,
the West Virginia Supreme Court of Appeals has held that Section 31-1-123
provides the exclusive remedy of a dissenting shareholder.

     AS THE PRESERVATION AND THE EXERCISE OF APPRAISAL RIGHTS REQUIRE STRICT
ADHERENCE TO THE PROVISIONS OF THESE LAWS, EACH SHAREHOLDER WHO MIGHT DESIRE TO
EXERCISE SUCH RIGHTS SHOULD CONSULT SUCH LAWS, SEEK THE ADVICE OF COUNSEL, AND
STRICTLY ADHERE TO THE PROVISIONS THEREOF.

     Pursuant to West Virginia Code Section 31-1-122, each Twentieth shareholder
and each Horizon shareholder has the right to dissent from the Merger as to all
or any part of the shares of Twentieth stock or Horizon stock registered in that
shareholder's name, provided the shareholder does not vote those shares in favor
of the Merger and complies with the procedures outlined in West Virginia Code,
Section 31-1-123.  Failure to vote against the Merger will not constitute a
waiver of a shareholder's dissenters' rights if all other procedures outlined in
West Virginia Code, Section 31-1-123 are followed.  Shareholders who mark their
proxies "ABSTAIN" or who do not vote at the Shareholders' Meeting may dissent as
to all of the shares which abstain from voting or are not voted in favor of the
Merger.  A shareholder may also vote "AGAINST" the Merger and not exercise his,
her or its right to dissent.

     Under West Virginia Code, Section 31-1-123, any Twentieth shareholder and
any Horizon shareholder who elects to exercise dissenters' rights must, prior to
or at the shareholders' meeting, file a written objection to the Merger with
Twentieth or Horizon, as applicable.  If the Merger receives the favorable vote
of a majority of the outstanding shares, and if the shareholder who has filed a
written objection has not voted in favor of the Merger, the shareholder must,
within ten (10) days after the date on which the shareholder vote is taken
approving the Merger, make written demand on Twentieth or Horizon, as the case
may be, for the payment of the fair value of those shares.  MERELY VOTING
AGAINST, OR ABSTAINING FROM VOTING ON, THE MERGER, IS NOT SUFFICIENT TO PRESERVE
THE RIGHTS OF A DISSENTING


                                       48
<PAGE>   63
SHAREHOLDER.  Any shareholder failing to file a timely written objection to the
Merger or failing to make demand within the ten (10) day period will be bound
by the terms of the Merger as contemplated in the Merger Agreement.  It is the
obligation of any shareholder desiring to dissent to ascertain the result of
the vote and such shareholder may do so by attending the Shareholders' Meeting
or thereafter making inquiry of Twentieth or Horizon.  Neither Horizon nor
Twentieth undertakes to notify shareholders of the favorable vote within such
ten (10) day period.

     Within twenty (20) days after demanding payment for shares of his or her
stock, each shareholder demanding payment must submit the certificate or
certificates representing his or her stock to the appropriate corporation for
notation on the certificate(s) that such demand has been made.  A failure to do
so will, at the option of Twentieth or Horizon, terminate the shareholder's
dissenter's rights unless a court of competent jurisdiction, for good and
sufficient cause shown, shall otherwise direct.

     Within ten (10) days after the date the Merger is consummated, Twentieth or
Horizon, as the case may be, will provide each dissenting shareholder who has
made demand as specified above with notice of consummation and such notice also
shall include a written offer to each dissenting shareholder to pay the amount
that each considers to be the fair value of its shares of stock.  The notice and
offer must be accompanied by certain statutorily prescribed financial
information.

     If the Merger is effected, Twentieth or Horizon, as appropriate, will pay
each properly dissenting shareholder, upon surrender of the certificate or
certificates representing the shares of the common stock as to which dissenters'
rights have been exercised, the fair value of the shares as of the day prior to
the date on which the vote is taken approving the Merger, EXCLUDING ANY
APPRECIATION OR DEPRECIATION IN ANTICIPATION OF THE MERGER.  Any shareholder
making this demand will be entitled only to payment of the fair value of his or
her shares of stock at the date and, as to such shares, is not thereafter
entitled to vote or exercise any rights as a shareholder of Twentieth or
Horizon.

     If the fair value of his or her shares is agreed upon by Twentieth or
Horizon, as the case may be,  and the dissenting shareholder within thirty (30)
days of the date of the consummation of the Merger, payment for the shares of
the dissenting shareholder must be made within ninety (90) days of the date of
the consummation of the Merger upon the surrender of the certificate or
certificates representing such shares.  If no agreement is reached within this
thirty (30) day period, then the dissenting shareholder must make a written
demand on Twentieth or Horizon, as applicable,  to seek a judicial determination
of the fair value of the shares of the dissenting shareholder pursuant to the
provisions of West Virginia Code, Section 31-1-123(e).  This written demand must
be given within sixty (60) days after the date of the consummation of the
Merger.  Within thirty (30) days after receipt of such written demand, Twentieth
or Horizon  must institute such legal proceeding. Twentieth or Horizon may seek
such determination, at its own election, within the sixty (60) day period after
the date of the consummation of the Merger. Any party to the proceeding may
appeal any judgment or ruling of the court as in other civil cases.

     The costs and expenses of any such legal proceeding shall be determined by
the court and assessed against Twentieth or Horizon, but the court may apportion
or assess all or part of such costs and expenses against any or all of the
dissenting shareholders who are parties to the proceeding and


                                       49
<PAGE>   64
to whom Twentieth or Horizon had made an offer to pay if the court finds that
the action of the shareholders in failing to accept such offer was arbitrary or
vexatious or not in good faith.

     The following is a summary of, the sequence of steps which must be followed
to perfect a dissenting shareholder's rights:

      1. File a written objection prior to or at the Shareholders' Meeting;

      2. Abstain or vote against the Merger at the Shareholders' Meeting;

      3. Within ten (10) days after the Shareholders' Meeting, make written
      demand for payment and, within twenty (20) days after such demand, submit
      the shareholder's stock certificates for notation thereon that such demand
      has been made; and

      4. Within sixty (60) days after the date of the consummation of the
      Merger, make written demand for institution of a civil action to determine
      the fair value of the shares of common stock unless agreement on value has
      previously been reached.

     A dissenting shareholder may withdraw a demand for payment only with the
consent of Twentieth or Horizon as the case may be.  The right of a shareholder
to be paid the fair value of his or her shares will cease and his or her status
as a shareholder will be restored if (i) the demand for payment is withdrawn
with the consent of Twentieth or Horizon; (ii) the Merger is abandoned or
rescinded; (iii) the shareholders revoke the authority to effect the Merger;
(iv) no demand or petition for determination of the fair value by a court of
general civil jurisdiction has been made or filed within the time provided under
subsection (e) of West Virginia Code, Section 31-1-123; or (v) a court of
general civil jurisdiction determines that the shareholder is not entitled to
obtain relief as a dissenting shareholder.

     Horizon shareholders desiring to dissent should submit the required written
objections, demand for payment, stock certificates and other required
submissions to:

               Abigail Scott 
               Horizon Bancorp, Inc. 
               One Park Avenue 
               Beckley, West Virginia  25802

     Twentieth shareholders desiring to dissent should submit the required
written objections, demand for payment, stock certificates and other required
submissions to:
 
               B. C. McGinnis, III
               Twentieth Bancorp, Inc.
               1900 Third Avenue
               Huntington, West Virginia 25703


                                       50
<PAGE>   65
CONDITIONAL STOCK OPTION AGREEMENT

     On February 6, 1996, Horizon and Twentieth entered into a Conditional Stock
Option Agreement pursuant to which Twentieth granted Horizon an irrevocable
option to purchase an amount of authorized but unissued common stock or treasury
stock of Twentieth which at the time of exercise of the option constitutes 19.9%
of the then outstanding shares of Twentieth's stock. The option price to be paid
by Horizon for the Twentieth stock is Forty Dollars and Forty Cents ($40.40) per
share.

     The option may be exercised only upon the occurrence of a Purchase Event.
A Purchase Event is defined as (i) the approval and acceptance by Twentieth and
its shareholders of an offer from an entity other than Horizon to be acquired by
such other entity whether by merger, consolidation, sale of assets or otherwise,
or (ii) the acquisition by an entity, other than Horizon, or by a group acting
in concert, of more than fifty percent (50%) of Twentieth's outstanding common
stock.  Horizon must give written notice of its intention to exercise the option
within twenty (20) days of the occurrence of a Purchase Event and if not
exercised within such twenty (20) day period, the option automatically
terminates.  If Horizon timely exercises its option, closing must occur within
thirty (30) days after Twentieth receives notice of the exercise by Horizon.
Provision is included in the Conditional Stock Option Agreement for the shares
and the purchase money to be delivered to representatives of Horizon and
Twentieth or into escrow pending receipt of any necessary regulatory approvals.
The term of the Conditional Stock Option Agreement is until December 31, 1996 or
completion of the transactions contemplated under the Merger Agreement,
whichever occurs first.

                        PRO FORMA FINANCIAL INFORMATION

       PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
               HORIZON BANCORP, INC. AND TWENTIETH BANCORP, INC.
                                 (IN THOUSANDS)

     The following unaudited pro forma condensed consolidated financial
statements combine the historical financial statements of Horizon and Twentieth
at December 31, 1995 and 1994 and for the three years in the period ended
December 31, 1995. These unaudited pro forma condensed consolidated financial
statements should be read in conjunction with the historical financial
statements of Horizon and Twentieth.

     It is expected that the acquisition of Twentieth will be accounted for
under the pooling-of-interests method of accounting. As required by that method,
financial information of the merging companies is combined as though the
companies had always been a single entity. These pro forma financial statements
may not be indicative of the results that actually would have occurred if the
combination had been in effect on the dates indicated or which may be obtained
in the future.

     The pro forma adjustments reflect the issuance of 1,818,000 shares of
Horizon common stock for 100% of the outstanding shares of Twentieth.  The
issuance represents an exchange ratio of 1.01 shares of Horizon for each of the
1,800,000 shares of Twentieth common stock outstanding.  NOTE: MINOR
DIFFERENCES MAY RESULT FROM ROUNDING


                                       51
<PAGE>   66
                                 (in thousands)
                        PRO FORMA CONDENSED CONSOLIDATED
                           BALANCE SHEET (UNAUDITED)
                               DECEMBER 31, 1995
                                  As Reported
                                  -----------
<TABLE>
<CAPTION>
                                            Horizon      Twentieth                         
ASSETS                                      Bancorp,      Bancorp,          Pro Forma      Pro Forma
                                            Inc.          Inc.              Adjustments    Consolidated
                                            -------       --------          -----------    ------------     
<S>                                        <C>            <C>              <C>                <C>
  Cash and cash equivalents                 $22,080        $17,728                             $39,808
  Held to maturity securities                34,413         32,890                              67,303
  Available for sale securities             115,120         63,109                             178,229
  Loans, net                                419,880        192,168                             612,048
  Premises and equipment                     10,209          7,090                              17,299
  Accrued interest receivable
    and other assets                         13,043          4,323                              17,366
                                             ------          -----                              ------


        Total assets                       $614,745       $317,308            0               $932,053
                                           ========       ========            =               ========

LIABILITIES AND SHAREHOLDERS' EQUITY:

  Deposits:
    Noninterest bearing                     $74,558        $41,970                            $116,528
    Interest bearing                        439,917        238,287                             678,204
                                            -------        -------                             -------

                           Total            514,475        280,257            0                794,732

  Short-term borrowings                      20,941          1,376                              22,317
  Accrued interest payable
    and other liabilities                     8,222          2,399                              10,621
                                              -----          -----                              ------

                                            543,638        284,032            0                827,670

  Common stock                                2,835          1,800           18      (1)         4,653
  Surplus                                    12,262          7,500          (18)     (1)        19,744
  Treasury stock                               (175)                                              (175)
  Retained earnings                          55,001         23,591                              78,592
  Net unrealized gain/(loss) on
     AFS securities                           1,184            385                               1,569
                                              -----            ---                               -----
                           Total             71,107         33,276            0                104,383
                                             ------         ------            -                -------
        Total Liabilities and 
          Shareholders' Equity             $614,745       $317,308           $0               $932,053
                                           ========       ========           ==               ========
                 
<FN>   
(1) The shareholders' equity accounts have been adjusted to reflect the
issuance of 1,818,000 shares of Horizon common stock at $1 par value

</TABLE>


                                       52
<PAGE>   67
                                 (in thousands)
                        PRO FORMA CONDENSED CONSOLIDATED
                           BALANCE SHEET (UNAUDITED)
                               DECEMBER 31, 1994
                                  As Reported
                                  -----------
<TABLE>
<CAPTION>
                                          Horizon       
                                          Bancorp,     Twentieth           Pro Forma         Pro Forma
                                          Inc.         Bancorp, Inc.       Adjustments      Consolidated
                                          -------      ------------        -----------      ------------
<S>                                      <C>          <C>                 <C>              <C>
ASSETS

  Cash and cash equivalents                 $24,432        $15,324                             $39,756
  Held to maturity securities                97,581         41,522                             139,103
  Available for sale securities              57,569         40,594                              98,163
  Loans, net                                370,582        203,471                             574,053
  Premises and equipment                      7,097          6,861                              13,958
  Accrued interest receivable
    and other assets                         12,674          4,899                              17,573
                                             ------          -----                              ------

        Total assets                       $569,935       $312,671            0               $882,606
                                           ========       ========            =               ========


LIABILITIES AND SHAREHOLDERS' EQUITY:

  Deposits:
    Noninterest bearing                     $70,781        $45,482                            $116,263
    Interest bearing                        412,774        233,582                             646,356
                                            -------        -------                             -------

                           Total            483,555        279,064            0                762,619

  Short-term borrowings                      16,797          3,374                              20,171
  Accrued interest payable
    and other liabilities                     6,001            923                               6,924
                                              -----            ---                               -----

                                            506,353        283,361            0                789,714

  Common stock                                2,835          1,500          318      (1)         4,653
  Surplus                                    12,262          7,500         (318)     (1)        19,444
  Treasury stock                                                                                     0
  Retained earnings                          49,903         21,559                              71,462
  Net unrealized gain/(loss)
   on AFS securities                         (1,297)        (1,249)                             (2,546)
  Deferred ESOP benefit                        (121)                                              (121)
                                              -----                                              -----

                           Total             63,582         29,310            0                 92,892
                                             ------         ------            -                 ------
        Total Liabilities and 
          Shareholders' Equity             $569,935       $312,671           $0               $882,606
                                           ========       ========           ==               ======== 
<FN>

(1) The shareholders' equity  accounts have been adjusted to reflect the
issuance of 1,818,000 shares of Horizon common stock at $1 par value.

</TABLE>


                                       53
<PAGE>   68
                       (In thousands, except share data)
                        PRO FORMA CONDENSED CONSOLIDATED
                        STATEMENT OF INCOME (UNAUDITED)
                          YEAR ENDED DECEMBER 31, 1995
                                  As Reported
                                  -----------

<TABLE>
<CAPTION>
                                            Horizon 
                                            Bancorp,     Twentieth         Pro Forma       Pro Forma
                                              Inc.      Bancorp, Inc.     Adjustments     Consolidated
                                            --------    -------------     -----------     ------------
<S>                                         <C>           <C>               <C>               <C>
Interest income                             $46,474        $23,715                             $70,189
Interest expense                             18,051          9,120                              27,171
                                             ------          -----                              ------
Net interest income before
  provision for loan losses                  28,423         14,595            0                 43,018
Provision for loan losses                     1,061          1,444                               2,505
                                              -----          -----                               -----
Net interest income                          27,362         13,151            0                 40,513
Other income                                  3,022          1,606                               4,628
Other expenses                               18,324          9,328                              27,652
                                             ------          -----                              ------
Income before income taxes                   12,060          5,429            0                 17,489
Income tax expense                            3,989          2,018                               6,007
                                              -----          -----                               -----
Net income                                   $8,071         $3,411            0                $11,482
                                             ======         ======            =                =======
 
Average shares outstanding                    2,833          1,798                    (2)        4,649
(thousands)                                   =====          =====                               =====

Earnings per share                            $2.85          $1.90                               $2.47
                                              =====          =====                               =====

<FN>

(2) Average shares outstanding have been adjusted  for the Exchange Ratio 
(1.01 shares of Horizon for each share of Twentieth).

</TABLE>


                                       54
<PAGE>   69
                       (In thousands, except share data)
                        PRO FORMA CONDENSED CONSOLIDATED
                        STATEMENT OF INCOME (UNAUDITED)
                          YEAR ENDED DECEMBER 31, 1994
                                  As Reported
                                  -----------
 

<TABLE>
<CAPTION>
                                            Horizon
                                            Bancorp,      Twentieth        Pro Forma        Pro Forma
                                              Inc.      Bancorp, Inc.     Adjustments      Consolidated
                                            --------    -------------     -----------      ------------
<S>                                        <C>            <C>                <C>              <C>
Interest income                             $41,217        $21,014                             $62,231
Interest expense                             14,573          7,116                              21,689
                                             ------          -----                              ------
Net interest income before
  provision for loan losses                  26,644         13,898            0                 40,542
Provision for loan losses                     1,525            738                               2,263
                                              -----            ---                               -----
Net interest income                          25,119         13,160            0                 38,279
Other income                                  2,447          1,147                               3,594
Other expenses                               17,394          9,505                              26,899
                                             ------          -----                              ------
Income before income taxes                   10,172          4,802            0                 14,974
Income tax expense                            3,201          1,648                               4,849
                                              -----          -----                               -----
Net income                                   $6,971         $3,154            0                $10,125
                                             ======         ======            =                =======

Average shares outstanding                    2,835          1,800                    (2)        4,653
(thousands)                                   =====          =====                               =====

Earnings per share                            $2.46          $1.75                               $2.18
                                              =====          =====                               =====

<FN>

(2) Average shares outstanding have been adjusted for the Exchange Ratio 
(1.01 shares of Horizon for each share of Twentieth).

</TABLE>

                                       55
<PAGE>   70
                       (In thousands, except share data)
                        PRO FORMA CONDENSED CONSOLIDATED
                        STATEMENT OF INCOME (UNAUDITED)
                          YEAR ENDED DECEMBER 31, 1993
                                  As Reported
                                  -----------


<TABLE>
<CAPTION>
                                            Horizon      
                                            Bancorp,      Twentieth       Pro Forma        Pro Forma
                                              Inc.       Bancorp, Inc.    Adjustments     Consolidated
                                            --------     -------------    -----------     ------------
<S>                                        <C>            <C>                <C>              <C>
Interest income                             $40,647        $20,382                             $61,029
Interest expense                             15,266          7,923                              23,189
                                             ------          -----                              ------
Net interest income before
  provision for loan losses                  25,381         12,459            0                 37,840
Provision for loan losses                     1,955            382                               2,337
                                              -----            ---                               -----
Net interest income                          23,426         12,077            0                 35,503
Other income                                  2,506          1,457                               3,963
Other expenses                               16,353          9,272                              25,625
                                             ------          -----                              ------
Income before income taxes                    9,579          4,262            0                 13,841
Income tax expense                            3,060          1,285                               4,345
                                              -----          -----                               -----
Net income                                   $6,519         $2,977            0                 $9,496
                                             ======         ======            =                 ======

Average shares outstanding                    2,835          1,800                   (2)         4,653
(thousands)                                   =====          =====                               =====

Earnings per share                            $2.30          $1.65                               $2.04
                                              =====          =====                               =====
<FN>

(2) Average shares outstanding have been adjusted for the Exchange Ratio 
(1.01 shares of Horizon for each share of Twentieth).
</TABLE>

                                       56
<PAGE>   71
                    INFORMATION ABOUT HORIZON BANCORP, INC.

GENERAL INFORMATION

     Horizon was incorporated under the laws of West Virginia on May 10, 1982 as
a one bank holding company under the name Raleigh Bankshares, Inc.  On April 16,
1985, the corporation changed its name to Horizon Bancorp, Inc. as a result of
the corporation's expanding activities.  Horizon's main offices are located at
One Park Avenue, Beckley, West Virginia.

     Horizon currently has four (4) operating subsidiaries.  These are:

     1. Bank of Raleigh acquired by Horizon on January 3, 1984.

     2. The National Bank of Summers of Hinton acquired by Horizon on June 1,
     1985.

     3. Greenbrier Valley National Bank acquired by Horizon on March 31, 1993.

     4. First National Bank in Marlinton acquired by Horizon on March 31, 1993.

     The four subsidiary banks of Horizon engage in commercial banking
activities which provide financial and trust services to individuals and
commercial customers primarily located in Greenbrier, Pocahontas, Raleigh and
Summers Counties, West Virginia.  The Horizon subsidiary banks offer a wide
variety of banking services to its customers.  These include normal taking of
deposits; check cashing services; various checking and savings plans, including
certificates of deposits of varying terms, NOW checking, repurchase agreements
and fixed-rate IRA's.  The subsidiary banks' lending activities include home
mortgages, construction loans, consumer/personal loans and commercial loans. The
subsidiary banks also serve as trustee where appointed by a court or under a
private trust agreement.

     The subsidiary banks of Horizon compete for customers with other commercial
banks, savings and loan institutions, credit unions and other financial
institutions.  Brokerage firms, money market mutual funds, consumer finance and
credit card companies and other financial service companies also compete with
Horizon's banking subsidiaries.  In addition, personal and corporate trusts and
investment counseling services are offered by insurance companies, investment
counseling firms and other firms and individuals.

     Horizon, in the normal course of its business, considers acquisition and
merger opportunities.  Presently, no agreements, written or oral, to acquire or
merge with another financial institution exists other than the Merger Agreement.

     Horizon's principal assets are its investments in its subsidiaries.   Its
primary sources of income are dividends from its subsidiaries.  At December 31,
1995, based on total assets of $614,745,000, Horizon was the eighth (8th)
largest banking organization doing business in West Virginia.  The pro forma
combined total assets of Horizon and Twentieth would have been approximately
$932,053,000 as of December 31, 1995


                                       57
<PAGE>   72
     As of March 1, 1996 Horizon and its bank subsidiaries had 270 full-time
(equivalent) employees.

BANK OF RALEIGH

     Bank of Raleigh was originally chartered in 1899 as a West Virginia state
bank with its principal offices located in Beckley, West Virginia.  In 1957,
Beckley Industrial Savings and Loan Company merged with and into Bank of Raleigh
with the Bank of Raleigh as the surviving institution.  On September 19, 1988,
Crossroads National Bank, Bradley, West Virginia, was merged with and into Bank
of Raleigh.  The former offices of Crossroads National Bank became a full
service branch of Bank of Raleigh.  On January 3, 1984, the Bank of Raleigh
became a wholly owned subsidiary of Raleigh Bankshares, Inc. (now Horizon
Bancorp, Inc.)

     The main offices of Bank of Raleigh are located at One Park Avenue,
Beckley, West Virginia 25802 and its telephone number is 304-255-7000.  Bank of
Raleigh has four (4) branch offices located in Beckley, Bradley and Sophia, West
Virginia.

     Bank of Raleigh's primary market area is generally defined as Raleigh
County, West Virginia.  As of December 31, 1995, its main competitors were Bank
One, West Virginia, Beckley, N.A.; First State Bank & Trust (Beckley, West
Virginia); One Valley Bank of Oak Hill, Inc.; United National Bank, South;
Fayette County National Bank; Bank of Mount Hope, Inc.; Citizens & Southern
Bank; First Empire Federal Savings & Loan; and Beckley Federal Savings Bank. As
of December 31, 1995, total deposits of the commercial banks in Raleigh County
were approximately $596,445,000.  As of that date Bank of Raleigh had total
deposits of  approximately $251,906,000 or 42.23% of total deposits for the
commercial banks in Raleigh County.

THE NATIONAL BANK OF SUMMERS OF HINTON

     The National Bank of Summers of Hinton was originally chartered in 1895 as
a West Virginia state bank under the name The Bank of Summers.  In 1906, the
bank obtained a national charter and assumed the name The National Bank of
Summers of Hinton.   On June 1, 1985 The National Bank of Summers of Hinton
became a wholly owned subsidiary of Horizon Bancorp, Inc.

     The main office of The National Bank of Summers of Hinton is 123 Temple
Street, Hinton, West Virginia 25951 and its telephone number is 304-466-3311.
It has one (1) branch office also located in Hinton, West Virginia.

     The primary market area of The National Bank of Summers of Hinton is
Summers County, West Virginia.  As of December 31, 1995, its competitors
included First National Bank of Hinton; Bank of Greenville; First National Bank
in Peterstown; First State Bank and Trust (Rainelle, West Virginia); First
National Bank in Ronceverte; and The Bank of Monroe (Union, West Virginia).  As
of December 31, 1995 total deposits of the commercial banks in Summers County
were approximately $116,220,000.  As of that date, The National Bank of Summers
of Hinton had total deposits of approximately $60,532,000 or 52.06% of the total
deposits for commercial banks in Summers County.


                                       58
<PAGE>   73
GREENBRIER VALLEY NATIONAL BANK

     In 1985, Greenbrier Valley Bank, a state banking institution chartered in
1930, was consolidated with First National Bank of Alderson, a national banking
association chartered in 1901, to form a new bank under the charter of First
National Bank of Alderson with the title of Greenbrier Valley National Bank. In
December 1989, Greenbrier Valley National Bank was consolidated with Western
Greenbrier National Bank.  The Greenbrier Valley National Bank became a
subsidiary of Horizon as a result of the merger of Allegheny Bankshares
Corporation with and into Horizon in 1993.

     The main office of Greenbrier Valley National Bank is located at 109 S.
Jefferson Street, Lewisburg, West Virginia 24901 and its telephone number is
304-645-2500.  It has branches located in Alderson, Rainelle, Ronceverte and
Rupert, West Virginia.

     The primary market area of Greenbrier Valley National Bank is Greenbrier
County, West Virginia.  As of December 31, 1995, its competitors included One
Valley Bank (Ronceverte, West Virginia); Bank of White Sulphur Springs; First
National Bank in Ronceverte; First State Bank and Trust; and The Bank of Monroe
(Beaver, West Virginia).   At December 31, 1995, total deposits for commercial
banks in Greenbrier County were approximately $451,430,000.  At that date
Greenbrier Valley National Bank's total deposits in Greenbrier County were
approximately $150,040,000 or 33.24% of commercial banks total deposits in
Greenbrier County.

FIRST NATIONAL BANK IN MARLINTON

     First National Bank in Marlinton is a national banking association
chartered in 1902.  The bank became a subsidiary of Horizon as a result of the
merger of Allegheny Bankshares Corporation with and into Horizon in 1993.  The
main office of First National Bank in Marlinton is at 300 Eighth Street,
Marlinton, West Virginia and its telephone number is 304-799-4640.

     The primary market area of First National Bank in Marlinton is Pocahontas
County, West Virginia.  As of December 31, 1995, its competitors included Bank
of Marlinton; Pendleton County Bank; Bank of White Sulphur Springs; and Mountain
Valley Bank, N.A.  As of December 31, 1995, total deposits for commercial banks
in Pocahontas County were approximately $98,669,000.  At that date First
National Bank of Marlinton had deposits of approximately $52,542,000 or 53.25%
of total deposits for commercial banks in Pocahontas County, West Virginia.

COMMITTEES OF THE HORIZON BOARD OF DIRECTORS

     The Horizon Board of Directors met six (6) times during 1995.  Each
Director attended at least 75% of all meetings held during the period for which
he or she was a Director except for Tracy W. Hylton, II and Robert L. Kosnoski.
The Horizon Board of Directors had three (3) standing committees during 1995.
Each committee submits a report of activities to the full Board for
ratification.


                                       59

<PAGE>   74
     The Executive Committee consists of the following individuals and met eight
(8) times during 1995:  Frank S. Harkins, Jr. (Chairman), John C.  Horton, Jr.,
David W. Hambrick, Carolyn H. McCulloch, Philip L. McLaughlin, Rodney H. Pack,
E. M. Payne III, James E. Songer and, until April 1995, Munir S. Yarid.  Each
member of the Committee attended at least 75% of all meetings held during the
period for which he or she served on the Committee.  The Executive Committee
performs functions set forth by the Horizon Board of Directors and makes
recommendations to the Board.  The Merger Agreement provides that upon
consummation of the Merger three (3) of the six (6) individuals selected by
Twentieth for inclusion on the Horizon Board of Directors shall be appointed to
Horizon's Executive Committee.  Twentieth has identified William C. Dolin, B. C.
McGinnis, III, and Thomas L. McGinnis as the individuals to be appointed to
Horizon's Executive Committee.

     The Audit Committee consists of the following individuals and met five (5)
times during 1995: Thomas E. Lilly (Chairman), Tracy W. Hylton, II, Harper W.
Nelson, Rodney H. Pack and Albert M. Tieche, Jr.  Jack L. Hellems, a director of
The National Bank of Summers of Hinton, serves as an ex officio member of the
Audit Committee and attended all meetings.  Each member of the Committee
attended at least 75% of all meetings held during the period for which he served
on the Committee except Tracy W. Hylton, II.  The Audit Committee reviews and
evaluates significant matters relating to Horizon's internal auditor's report,
reviews internal accounting procedures and recommends engagement of the
independent auditors.

     The Compensation Committee consists of the following individuals and met
two (2) times during 1995:  E. M. Payne III (Chairman), John C.  Horton, Jr.,
Carolyn H. McCulloch, Rodney H. Pack and James E. Songer.  Each member of the
Committee attended at least 75% of all meetings held during the period for which
he or she served on the Committee.  The Compensation Committee recommends the
compensation arrangements for senior management and allocations to be granted
under Horizon's Incentive Stock Option Plan.

COMPLIANCE WITH SECTION 16(A) OF THE SECURITIES EXCHANGE ACT OF 1934

     Section 16(a) of the Securities Exchange Act of 1934 requires Horizon's
directors and executive officers, and persons who own more than ten percent
(10%) of a registered class of Horizon's equity securities, to file with the
Securities and Exchange Commission initial reports of ownership and reports of
changes in ownership of common stock and other equity securities of Horizon.
Officers, directors and greater than ten percent (10%) shareholders are required
by SEC regulation to furnish Horizon with copies of all Section 16(a) forms they
file.

     Bank of Raleigh holds a special Power of Attorney to file such forms on
behalf of Horizon's directors.  Based solely upon a review of the copies of such
reports furnished to Horizon or written representations that no other reports
were required, Horizon believes that during the 1995 fiscal year all filing
requirements applicable to its officers, directors and greater than ten percent
(10%) beneficial owners were complied with except that (i) two (2) reports,
covering an aggregate of two (2) transactions were filed late by Earl R. Turner;
(ii) two (2) reports, covering an aggregate of two (2) transactions, were filed
late by Phillip W. Cain; (iii) one (1) report covering one (1) transaction was
filed late by David W. Hambrick; (iv) two (2) reports covering five (5)
transactions were filed late by Frank S. Harkins, Jr.; (v) one (1) report
covering one (1) transaction was filed late by Thomas E.


                                       60


<PAGE>   75
Lilly; (vi) one (1) report covering two (2) transactions was filed late by
Philip L. McLaughlin; (vii) one (1) report covering one (1) transaction was
filed late by E. M. Payne III, President of Piney Land Company; and (viii) one
(1) report covering five (5) transactions was filed late by E. A. Tuckwiller,
Jr.

LEGAL PROCEEDINGS

     Horizon and its subsidiaries are not currently involved in any material
pending legal proceedings other than routine litigation incidental to their
business.

SHAREHOLDER PROPOSALS FOR 1997

     Any shareholder who wishes to have a proposal placed before the next annual
meeting of shareholders must submit the proposal to the President of Horizon at
its executive offices, One Park Avenue, Beckley, West Virginia, and such
proposal must be received no later than ___________, 1996, to have it considered
for inclusion in the proxy statement of the Annual Meeting in 1997.

ADDITIONAL INFORMATION

     Additional information with respect to Horizon and its subsidiaries is
included in Horizon's annual report on Form 10-K for the year ended December 31,
1995 and in Horizon's 1995 Annual Report both of which are incorporated herein
by reference and copies of which are delivered herewith.  See, "INCORPORATION OF
CERTAIN DOCUMENTS BY REFERENCE."  Your attention is particularly directed to the
following items of Horizon's Form 10-K:

     1. Item 12 of Horizon's Annual Report on the Form 10-K entitled "Security
        Ownership of Certain Beneficial Owners and Management";

     2. Item 10 of Horizon's Annual Report on Form 10-K entitled "Directors and
        Executive Officers of Horizon";

     3. Item 11 of Horizon's Annual Report on Form 10-K entitled "Executive
        Compensation"; and

     4. Item 13 of Horizon's Annual Report on Form 10-K entitled "Certain
        Relationships and Related Transactions".

     The following portions of Horizon's Annual Report have been incorporated by
reference into Horizon's Annual Report on Form 10-K and by reference to the
Horizon Form 10-K are also incorporated herein by reference:

     1. Table 1 "Five Year Selected Financial Summary" on page 5 of Horizon's
        1995 Annual Report to Shareholders;

     2. "Financial Statements and Notes" on page 29 through 45 of Horizon's 1995
        Annual Report to Shareholders; and


                                       61
<PAGE>   76

     3. "Management's Discussion and Analysis of Financial Condition and Results
        of Operation" on pages 5 though 26 of Horizon's 1995 Annual Report to
        Shareholders.


                   INFORMATION ABOUT TWENTIETH BANCORP, INC.

GENERAL INFORMATION

     Twentieth is a registered bank holding company and a West Virginia
corporation.  Twentieth was first organized in 1983, to serve as the parent
holding company of The Twentieth Street Bank.  Twentieth's principal asset is
its investment in Twentieth Street Bank.  Twentieth's primary sources of income
are dividends from Twentieth Street Bank.

     On December 31, 1984 Twentieth acquired all of the stock of First National
Bank of West Hamlin, West Hamlin, West Virginia.  On January 1, 1990, the First
National Bank of West Hamlin was converted into a branch of Twentieth Street
Bank.

     As of December 31, 1995 Twentieth had consolidated assets of $317,308,405
and was the twelfth (12th) largest banking organization doing business in West
Virginia.

     As of March 1, 1996, Twentieth and its bank subsidiary had 158 full time
(equivalent) employees.

THE TWENTIETH STREET BANK

     The Twentieth Street Bank is a West Virginia state bank.  Twentieth Street
Bank was first organized in 1905, and is chartered under the banking laws of
West Virginia.  On July 1, 1985, Twentieth Street Bank acquired all of the
assets of Bank of Milton, Milton, West Virginia.  The deposits of Twentieth
Street Bank are insured by the BIF of the FDIC up to the limits of the law.

     Twentieth Street Bank's business is the operation of a commercial bank.
Twentieth Street Bank conducts its business through a main office located at
1900 Third Avenue, Huntington, West Virginia, and five (5) branches.  Two branch
offices are located in the City of Huntington.  The remaining branches are
located in Harts, Milton and West Hamlin, West Virginia.  Twentieth Street Bank
has recently decided to close the Harts, West Virginia branch office. Twentieth
Street Bank's primary geographic market is all of Cabell County, West Virginia
and a portion of Lincoln County, West Virginia.  As of December 31, 1995 its
competitors included Bank One, West Virginia, National Association (Huntington,
West Virginia); One Valley Bank of Huntington; Huntington National Bank of West
Virginia; United National Bank; The Old National Bank of Huntington; First State
Bank; Huntington Federal; and the City of Huntington Federal Credit Union.
Twentieth Street Bank competes directly for deposits in Cabell and Lincoln
Counties with other commercial banks, savings and loan associations, credit
unions, agencies issuing United States government securities and all other
organizations and institutions engaged in money market transactions.  In its
lending activities,


                                       62
<PAGE>   77
Twentieth Street Bank competes with all other financial institutions as well as
consumer finance companies, mortgage companies and other lenders engaged in the
business of extending credit.  As of December 31, 1995, total deposits of the
commercial banks in Cabell County and Lincoln County, West Virginia were
approximately $245,000,000 and $35,400,000 respectively.  As of December 31,
1995, Twentieth Street Bank had total deposits of approximately $280,257,000.

     Twentieth Street Bank is a community-oriented financial institution
offering lending and deposit banking services as well as trust services to the
communities it serves.  Twentieth Street Bank offers the usual and customary
banking services typically found in a region of its economic size and diversity,
including normal taking of deposits, cashing checks, and providing for
individual commercial cash needs; various checking and savings plans, including
fixed-rate and variable-rate certificates of deposits of varying terms, insured
money market saving, NOW checking, repurchase agreements and fixed-rate IRAs.
As a community-oriented financial institution, Twentieth Street Bank's lending
services include home mortgages, construction loans, consumer/personal loans and
commercial  loans.  Twentieth Street Bank's lobby and drive-in hours have been
established to accommodate the needs of the community served by the bank and
automated teller machines provide 24-hour banking to the bank's customers.
Twentieth Street Bank also serves as trustee where appointed by court or under a
private trust agreement.

REGULATORY MATTERS

     Twentieth Street Bank has entered into and continues to operate under a
Memorandum of Understanding with the FDIC dated December 12, 1994.  The
Memorandum of Understanding will remain in effect until, at least, a full scope
examination is performed by the FDIC which is scheduled for the third quarter of
1996.  There is no guaranty the Memorandum of Understanding will be removed at
that time.

LEGAL PROCEEDINGS

     Twentieth and Twentieth Street Bank are not currently involved in any
material pending legal proceedings other than routine litigation incidental to
its business, which involve it or any of its properties.

ADDITIONAL INFORMATION

     Additional information with respect to Twentieth and its subsidiary bank,
Twentieth Street Bank, is included in Twentieth's annual report on Form 10-K for
the year ended December 31, 1995, which is incorporated herein by reference, and
a copy of which is delivered herewith.  See, "INCORPORATION OF CERTAIN DOCUMENTS
BY REFERENCE."  Your attention is particularly directed to the following items
of Twentieth's Form 10-K:

     1. Item 6 of Twentieth's Annual Report on Form 10-K entitled "Selected
        Financial Data";

     2. Item 8 of Twentieth's Annual Report on Form 10-K entitled "Financial
        Statements and Supplementary Data";


                                       63
<PAGE>   78

     3. Item 7 of Twentieth's Annual Report on Form 10-K entitled "Management's
        Discussion and Analysis of Financial Condition and Results of 
        Operation";

     4. Item 12 of Twentieth's Annual Report on Form 10-K entitled "Security
        Ownership of Certain Beneficial Owners and Management";

     5. Item 10 of Twentieth's Annual Report on Form 10-K entitled "Directors
        and Executive Officers of the Registrant";

     6. Item 11 of Twentieth's Annual Report on Form 10-K entitled "Executive
        Compensation"; and

     7. Item 13 of Twentieth's Annual Report on Form 10-K entitled "Certain
        Relationships and Related Transactions".


                          MARKET PRICES AND DIVIDENDS

     The common stock of Horizon has been traded on the Nasdaq National Market
under the symbol HZWV since 1993.  As of December 31, 1995, Horizon had
2,835,670 shares of its common stock outstanding which amount includes 5,540
shares of treasury stock.  At the present time, there is no established market
in which Twentieth Stock is regularly traded nor any uniformly quoted price for
Twentieth Stock.  As of December 31, 1995, Twentieth had 1,800,000 shares of its
common stock outstanding.  Purchases and sales of Twentieth Stock occur from
time to time, in private transactions.

     The following table presents quarterly information on the price range of
the common stock of Horizon for the periods indicated and indicates the high and
low sales prices as reported by the Nasdaq National Market.  The prices are
shown without retail markups, markdowns or commissions.  The table also presents
the high and low sales price for Twentieth stock known to Twentieth for the
periods indicated.  The high and low sales price for Twentieth stock have been
adjusted to reflect the three for one stock split declared by Twentieth's 
Board of Directors on May 15, 1995.

<TABLE>
<CAPTION>
                                       Horizon          Twentieth
                                    Low      High      Low      High
                                    ---      ----      ---      ----
                <S>               <C>       <C>      <C>       <C>
                1995:
                First Quarter      $28.00    $31.00   $17.50   $17.50
                Second Quarter     $28.00    $31.00   $17.50   $17.50
                Third Quarter      $29.50    $36.00   $17.50   $20.00
                Fourth Quarter     $34.50    $42.00   $20.00   $20.00
</TABLE>


                                       64
<PAGE>   79
<TABLE>
       <S>               <C>       <C>       <C>       <C>
       1994:
       First Quarter      $28.00    $31.00    $15.83    $15.83
       Second Quarter     $28.00    $30.00    $15.83    $16.67
       Third Quarter      $28.00    $30.00    $16.67    $17.50
       Fourth Quarter     $28.00    $31.00    $17.50    $17.50
</TABLE>

     On __________, 1996, the high and low sale prices of the common stock of
Horizon on the Nasdaq National Market was $____________. On March 1, 1996, the
last known independent selling price of Twentieth stock was $20.00 per share. On
February 6, 1996, the last day before announcement of the Merger, the last sale
price of the common stock of Horizon on the Nasdaq National Market was $43.00
per share. As of that same date, the last known independent selling price of
Twentieth Stock was $20.00 per share and related to the sale of 200 shares on
December 5, 1995.

     As of March 1, 1996, there were approximately 2,164 shareholders of record
of the common stock of Horizon and approximately 433 shareholders of record of
the common stock of Twentieth.

     The following table shows the cash dividends declared by Horizon and
Twentieth per share for the indicated periods.  Horizon has paid quarterly cash
dividends on its common stock since 1982.  Twentieth has paid semi-annual cash
dividends on its common stock since 1983.  The dividends for Twentieth have been
adjusted to reflect the three for one stock split declared by Twentieth's Board
of Directors on May 15, 1995.

<TABLE>
<CAPTION>
                            Horizon Cash        Twentieth Cash
                            Dividend Declared   Dividend Declared
                            Per Share           Per Share
                            -----------------   -----------------
 <S>                       <C>                 <C>
1995:
  First Quarter             $0.25               N/A
  Second Quarter            $0.25               $0.30
  Third Quarter             $0.25               N/A
  Fourth Quarter            $0.30               $0.30

1994:
  First Quarter             $0.24               N/A
  Second Quarter            $0.24               $0.23
  Third Quarter             $0.24               N/A
  Fourth Quarter            $0.25               $0.27

1993:
  First Quarter             $0.23               N/A
  Second Quarter            $0.23               $0.22
  Third Quarter             $0.23               N/A
  Fourth Quarter            $0.24               $0.25

</TABLE>

                                        
                                       65

<PAGE>   80

     The timing and amount of future dividends will be within the discretion of
the Board of Directors of Horizon and will depend upon the earnings of Horizon
and its subsidiaries, their financial condition, liquidity and capital
requirements, applicable government regulations and policies and other factors
deemed relevant by the Board of Directors.  Subject to the foregoing, it is
currently Horizon's anticipation that cash dividends comparable to those paid
during the past three years will continue to be paid in the future.  No
assurances can be given, however, that any dividends will be declared in the
future or, if declared, what the amount of such dividends would be or whether
such dividends would continue for future periods.  The ability of Horizon to
accumulate earnings for the payment of dividends to its shareholders is
substantially dependent upon the ability of its banking subsidiaries to pay
dividends to Horizon.  The subsidiary bank's ability to pay dividends to Horizon
is subject to certain statutory and regulatory restrictions and the need to
maintain adequate capital.  See, "SUPERVISION, REGULATION AND GOVERNMENTAL
POLICY -- Bank Regulation."

     Twentieth has paid cash dividends since 1983.  If the Merger is not
effected there can be no assurance that dividends will be paid by Twentieth in
the future.  The declaration, payment and amount of any such future dividends
would depend upon business conditions, operating results, capital, reserve
requirements, regulatory authorizations and the consideration of other relevant
factors by the Twentieth Board of Directors.  See, "SUPERVISION, REGULATION AND
GOVERNMENTAL POLICY -- Bank Holding Company Regulation."


                SUPERVISION, REGULATION AND GOVERNMENTAL POLICY

     Bank holding companies, banks, and many of their nonbank affiliates are
extensively regulated under both federal and state law.  The following is a
brief summary of certain statutes, rules, and regulations affecting Horizon,
Twentieth  and their respective subsidiaries.  This summary is qualified in its
entirety by reference to the particular statutory and regulatory provisions
referred to below and is not intended to be an exhaustive description of the
statutes or regulations applicable to Horizon's or Twentieth's business.
Supervision, regulation, and examination of banks by the bank regulatory
agencies are intended primarily for the protection of depositors rather than
holders of a holding company's common stock.

BANK HOLDING COMPANY REGULATION

     Horizon and Twentieth are bank holding companies, registered with the
Federal Reserve under the BHC Act.  As such, Horizon and its subsidiaries and
Twentieth and its subsidiary are subject to the supervision, examination, and
reporting requirements contained in the BHC Act and the regulations of the
Federal Reserve.  The BHC Act requires that a bank holding company obtain the
prior approval of the Federal Reserve before (i) acquiring direct or indirect
ownership or control of more than 5% of the voting shares of any bank, (ii)
taking any action that causes a bank to become a subsidiary of the bank holding
company, (iii) acquiring all or substantially all of the assets of any bank, or
(iv) merging or consolidating with any other bank holding company.


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<PAGE>   81
     The BHC Act further provides that the Federal Reserve may not approve any
transaction 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 region of the United States, or the effect of which may be
substantially to lessen competition or to tend to create a monopoly in any
region of the country, or that in any other manner would be in restraint of
trade, unless the anti-competitive effects of the proposed transaction are
clearly outweighed by the public interest 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 and consideration of convenience and needs issues includes the parties'
performance under the Community Reinvestment Act of 1977 (the "CRA"), both of
which are discussed below.

     Banks are subject to the CRA.  Under the CRA, the appropriate federal bank
regulatory agency is required, in connection with its examination of a bank, to
assess such bank's record in meeting the credit needs of the community served by
that bank, including low- and moderate-income neighborhoods.  The regulatory
agencies' assessment of the bank' s record is made available to the public.
Further, such assessment is taken into consideration in connection with an
application to (i) convert an insured depository institution to  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 Federal Reserve will assess the record of each subsidiary
bank of the applicant bank holding company, and such records may be the basis
for denying the application.

     The BHC Act generally prohibits a bank holding company, with certain
exceptions, 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 Federal Reserve to be closely
related to banking, or managing or controlling banks, so 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
can reasonably 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 underwriting
activities have all been determined by regulations of the Federal Reserve to be
permissible activities of bank holding companies.  Pursuant to delegated
authority, the Federal Reserve Bank of Richmond has authority to approve certain
activities of holding companies within its district, including Horizon and
Twentieth, provided the nature of the activity has been approved by the Federal
Reserve.  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


                                       67
<PAGE>   82
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.

     Subsidiary banks of a bank holding company are subject to certain
restrictions imposed by the Federal Reserve on any extensions of credit to the
bank holding company or any of its subsidiaries, investments in the stock or
securities thereof and the acceptance of such stock or securities as collateral
for loans to any borrower.  A bank holding company and its subsidiaries are also
prevented from engaging in certain tie-in arrangements in connection with any
extension of credit, lease or sale of property, or furnishing of services.

     The Federal Reserve may issue cease and desist orders against bank holding
companies and non-bank subsidiaries to stop actions believed to present a
serious threat to a subsidiary bank.  The Federal Reserve also regulates certain
debt obligations, changes in control of bank holding companies and capital
requirements.

     Under the provisions of the West Virginia Code, Horizon and Twentieth are
each registered with and subject to regulation of the West Virginia Board.

BANK REGULATION

     BANK OF RALEIGH AND TWENTIETH STREET BANK.  Bank of Raleigh and Twentieth
Street Bank are each West Virginia state banks.  They are each supervised and
regularly examined by the West Virginia Division of Banking and the FDIC.  The
various laws and regulations administered by the regulatory agencies affect
corporate practices, such as payment of dividends, incurring debt and
acquisition of financial institutions and other companies, and affect business
practices, such as payment of interest on deposits, the charging of interest on
loans, mergers, types of business conducted and location of offices.  Deposits
in Bank of Raleigh and Twentieth Street Bank are each insured by the FDIC up to
the maximum extent permitted by law.  Neither the Bank of Raleigh nor Twentieth
Street Bank is a member of the Federal Reserve System.

     Loans made by Bank of Raleigh and Twentieth Street Bank may be subject to
usury laws that provide maximum interest rates that may be charged for specific
classes of loans, to a variety of other laws which impose limitations on loans
to a single borrower, to insiders and to others, and to other laws which impose
various requirements for certain types and classes of loans.

     Under present West Virginia law, Bank of Raleigh and Twentieth Street Bank
may establish branch banks either by the construction, lease or acquisition of
branch bank facilities anywhere in West Virginia.  Bank of Raleigh and Twentieth
Street Bank may establish branch banks by the purchase of the business and
assets and assumption of the liabilities of, or merger or consolidation, with,
another banking institution in West Virginia.

     The amount of dividends payable by Bank of Raleigh and Twentieth Street
Bank depends upon the bank's earnings and capital position, and is generally
limited by West Virginia law, regulations and policies.  Under applicable state
law, the directors of a West Virginia bank may declare a dividend of so much of
the net profits of the bank as the directors judge expedient,


                                       68
<PAGE>   83
provided, however, that certain limitations apply with respect to a bank whose
surplus fund is not equal to its common stock.  The prior approval of the
commissioner of banking is required if the total of all dividends declared by a
bank in any calendar year exceeds the total of its net profits of that year
combined with its retained net profits of the preceding two years.  Federal
bank regulatory agencies also have the general authority to limit the dividends
paid by insured banks if such payment may be deemed to constitute an unsafe and
unsound practice.

     NATIONAL BANK OF SUMMERS OF HINTON, GREENBRIER VALLEY NATIONAL BANK AND
FIRST NATIONAL BANK IN MARLINTON.  National Bank of Summers of Hinton,
Greenbrier Valley National Bank and First National Bank in Marlinton are each
national banking associations organized under the laws of the United States.
Deposits in each of the three national banks are insured by the FDIC up to the
maximum extent permitted by law.  Each of the three national banks is subject to
numerous state and federal statutes and regulations which affect its business,
activities and operations. Each national bank is a member of the Federal Reserve
System.

     The primary supervisory authority of the three national banks is the Office
of the Comptroller of the Currency.  The Office of the Comptroller of the
Currency has the authority to approve or disapprove branches, mergers,
consolidations and other similar corporate activities.

     National banks are also subject to restrictions under federal law upon
their ability to pay dividends.  Generally speaking, after the surplus fund of
the bank equals its common capital, the directors of a national bank may declare
a dividend of so much of the undivided profits of the bank as they judge
expedient; provided, however that the approval of the Comptroller of the
Currency is required if the total of all dividends declared by the bank in any
calendar year exceed the total of its net income of that year combined with its
retained net income of the preceding two years, less any required transfers to
surplus or a fund for the retirement of preferred stock.

CAPITAL REQUIREMENTS

     In December 1988, the Federal Reserve approved final risk-based capital
guidelines for bank holding companies, such as Horizon, Twentieth  and state
member banks.  The new guidelines, which became effective on March 15, 1989,
were phased in over four years and are based on the capital framework for
international banking organizations developed by the Basle Committee on Banking
Regulations and Supervisory Practices.  The FDIC also has adopted substantially
similar guidelines for state banks that are not members of the Federal Reserve
System, such as Bank of Raleigh.

     When the rules were fully phased-in at the end of 1992, the minimum
standard for the ratio of capital to risk-weighted assets, including certain
off-balance sheet obligations, such as standby letters of credit, became 8%.  At
least half of this capital must consist of common equity, retained earnings, and
a limited amount of perpetual preferred stock, less certain goodwill items
("Tier I capital").  The remainder ("Tier 2 capital") may consist of a limited
amount of other preferred stock, subordinated debt and a limited amount of loan
loss reserves.

     The Federal Reserve also has adopted, effective after December 31, 1990 a
minimum (leverage) ratio of Tier 1 capital to total assets of 3%.  The 3% Tier 1
capital to total assets ratio


                                       69
<PAGE>   84
constitutes the leverage standard for bank holding companies and state member
banks, and will be used in conjunction with the risk-based ratio in determining
the overall capital adequacy of banking organizations.  In proposing such
standards, the Federal Reserve emphasized that in all cases the suggested
standards are supervisory minimums and that an institution would be permitted
to maintain such minimum levels of capital only if it were a strong banking
organization, rated composite one under the CAMEL rating system for banks or
the BOPEC rating system for bank holding companies.  The Federal Reserve noted
that most expansion oriented banking organizations have maintained leverage
capital ratios of between 4% and 5% of total assets, and it is likely that
these ratios will be applied to Horizon.  The FDIC also has adopted the 3%
leverage ratio requirement effective April 10, 1991.

     As of December 31, 1995, Horizon had Tier 1 risk-adjusted, Tier 2 and
leverage capital of approximately 17.96%, 19.21% and 11.31%, respectively, all
in excess of the minimum requirements.  After giving effect to the Merger, at
December 31, 1995, Horizon would have had Tier 1 risk-adjusted, Tier 2 and
leverage capital of approximately 17.31%, 18.48% and 10.89%, respectively, on a
pro forma basis.

RECENT BANKING LEGISLATION

     During September 1994, Congress passed the Riegle-Neal Interstate Banking
and Branching Efficiency Act (the "Act") that permits, beginning June 1, 1997,
adequately capitalized and managed bank holding companies to acquire control of
banks in any state.  States may require the bank being acquired to have been in
existence for a certain length of time, but not in excess of five (5) years. No
bank (including any affiliates) may acquire more than ten percent (10%) of
nationwide insured deposits or thirty percent (30%) of any state's insured
deposits.  States have the right to waive the thirty percent (30%) limit. Under
the Act, beginning on June 1, 1997, banks also will be permitted to merge with
one another across state lines, subject to concentration, capital and Community
Reinvestment Act requirements and regulatory approval.  A state can authorize
mergers earlier than June 1, 1997, or it can opt out of interstate branching by
enacting legislation prior to June 1, 1997.  Effective with the date of
enactment, the Act also lets a state choose to permit out-of-state banks to open
new branches within its borders.  If a state chooses to allow interstate
acquisitions of branches, then an out-of-state bank also may acquire branches
by merger.  There can be no assurance as to what impact the Act might have upon
Horizon and its subsidiaries.

     The difficulties encountered nationwide by financial institutions during
the 1980s and 1990s have prompted federal legislation designed to reform the
banking industry and to promote the viability of the industry and of the deposit
insurance system.  Many of the provisions of the new legislation did not become
effective until December 1993.  In addition, many of the provisions will be
implemented through the adoption of regulations by the various federal banking
agencies.  Accordingly, the precise effect of the legislation on Horizon cannot
be assessed at this time.  Federal Deposit Insurance Corporation Improvement Act
of 1991 ("FDICIA"), which became effective on December 19, 1991, bolsters the
deposit insurance fund, tightens bank regulation, and trims the scope of federal
deposit insurance as summarized below.


                                       70
<PAGE>   85
     FDIC FUNDING.  FDICIA bolsters the bank deposit insurance fund with $70
billion in borrowing authority and increases to $30 billion from $5 billion the
amount the FDIC can borrow from the United States Treasury to cover the costs of
bank failures.  The loans, plus interest, would be repaid by premiums that banks
pay on domestic deposits over the next 15 years.

     BANK REGULATION.  Under FDICIA, regulatory supervision is linked to bank
capital.  Regulators established five capital levels for banks, ranging from
"well capitalized" to "critically undercapitalized." See, "SUPERVISION,
REGULATION AND GOVERNMENTAL POLICY --Enforcement Powers" for a discussion of the
five capital levels.  Regulatory action becomes mandatory as capital falls. In
addition, regulators have adopted a new set of non-capital measures which became
of bank safety, such as underwriting standards and minimum earnings levels,
effective on December 1, 1993.  The legislation also requires regulators to
perform annual on-site bank examinations, place limits on real estate lending by
banks, and tighten auditing standards.

     DEPOSIT INSURANCE.  FDICIA reduces the scope of federal deposit insurance.
The most significant change ends the "too big to fail" doctrine under which the
government protects all deposits in most banks, including those exceeding the
$100,000 insurance limit.  The FDIC's current ability to reimburse uninsured
deposits -- those over $100,000 -- will be sharply limited after 1994.  The
Federal Reserve's ability to finance banks with extended loans from its discount
window also will be restricted, beginning in December 1993.  In addition, only
well-capitalized banks will be able to offer insured brokered deposits or to
insure accounts established under employee pension plans.  The legislation
instructs the FDIC to change the way it assesses banks for deposit insurance,
moving from flat premiums to fees that require banks engaging in risky practices
to pay higher premiums than conservatively managed banks.  The new system became
effective January 1, 1994.

     On September 15, 1992, the FDIC announced an increase in the annual deposit
insurance assessment for all covered banks and thrifts, which implements the
risk-related deposit insurance system required by FDICIA.  The new insurance
premiums took effect January 1, 1993.  Under the FDIC risk-related deposit
insurance system, each insured depository institution is assigned to one of the
three categories, "well capitalized, " "adequately capitalized," or
"undercapitalized" as defined in regulations promulgated pursuant to FDICIA by
the Federal Reserve, the FDIC, and the other federal bank regulatory agencies.
These categories are subdivided into three subgroups based upon the FDIC's
evaluations of the risk posed by the depository institution, based in part on
examinations by the institution's primary federal and/or state regulator.  This
risk-related system initially provides for assessments ranging from .23% for the
strongest institutions and for the weakest institutions.  During January 1995
the FDIC asked for comments on a proposal to reduce the assessments for the
strongest banks.  This would leave unchanged the .31% assessment rate tor the
weakest banks.

ENFORCEMENT POWERS

     Congress has provided the federal bank regulatory agencies with an array of
powers to enforce laws, rules, regulations, and orders.  Among other things, the
agencies may require that institutions cease and desist from certain activities,
may preclude persons from participating in the affairs of insured depository
institutions, may suspend or remove deposit insurance, and may impose civil
money penalties against institution-affiliated parties for certain violations.


                                       71
<PAGE>   86
     Among other things, FDICIA requires the federal banking agencies to take
prompt corrective action" in respect of banks that do not meet minimum capital
requirements.  FDICIA establishes five capital tiers: "well capitalized,"
"adequately capitalized," "undercapitalized," "significantly undercapitalized"
and "critically undercapitalized," as defined by regulations promulgated by the
Federal Reserve, the FDIC, and the other federal depository institution
regulatory agencies.  A depository institution is well capitalized if it
significantly exceeds the minimum level required by regulation for each relevant
capital measure, adequately capitalized if it meets each such measure,
undercapitalized if it fails to meet any such measure, significantly
undercapitalized if it is significantly below such measure and critically
undercapitalized if it fails to meet any critical capital level set forth in the
regulations.  The critical capital level must be a level of tangible equity
capital equal to not less than 2% of total assets and not more than 65% of the
minimum leverage ratio prescribed by regulation (except to the extent that 2%
would be higher than such 65% level).  An institution may be deemed to be in a
capitalization category that is lower than is indicated by its actual capital
position if it receives an unsatisfactory examination rating.

POSSIBLE LEGISLATIVE CHANGES

     Legislative and regulatory proposals regarding changes in banking, and the
regulation of banks, savings institutions, and other financial institutions, are
considered from time to time by the executive branch of the federal government,
Congress, and various state governments, including West Virginia. Certain of
these proposals, if adopted, could significantly change the regulation of banks,
savings institutions, and the financial services industry generally.  It cannot
be predicted whether any of these proposals will be adopted, and, if adopted,
how these will affect Horizon, Twentieth or any of their subsidiaries.

     During the 1996 Legislative Session, Senate Bill No. 280 was introduced and
passed by the West Virginia Legislature.  The Bill addresses interstate branch
banking issues. Generally speaking, Senate Bill No. 280 would, beginning on May
31, 1997, permit (i) a West Virginia state bank to establish, maintain and
operate one or more branches in a state other than West Virginia pursuant to an
interstate merger transaction in which the West Virginia bank is the resulting
bank, (ii) an out of state bank resulting from an interstate merger between a
West Virginia bank and an out-of-state bank, to maintain the West Virginia
branches and offices of the West Virginia bank participating in the merger. The
Bill would also allow a West Virginia state bank to open a branch in another
state or for an out-of-state bank to establish a branch office in West Virginia,
other than as a result of a merger or other acquisition, if the laws of the
other state grant acquisition, if the laws of the other state grant
substantially similar rights to West Virginia banks.  As of April 1, 1996 the
Bill had not yet been signed by the Governor of West Virginia.

EFFECT OF GOVERNMENTAL POLICIES

     The earnings and business of Horizon are and will be affected by the
policies of various regulatory authorities of the United States, especially the
Federal Reserve.  The Federal Reserve, among other functions, regulates the
supply of credit and deals with general economic conditions within the United
States. The instruments of monetary policy employed by the Federal Reserve for
these purposes influence in various ways the overall level of investments,
loans, other extensions of credit and deposits, and the interest rates paid on
liabilities and received on assets.


                                       72
<PAGE>   87

                            CAPITAL STOCK OF HORIZON

     The current capital stock of Horizon is Five Million Dollars ($5,000,000),
being Five Million (5,000,000) shares of common stock, One Dollar ($1.00) par
value per share.  As of March 1, 1996, Two Million Eight Hundred Thirty-Five
Thousand Six Hundred Seventy (2,835,670) shares of Horizon common stock are
issued and outstanding which includes Five Thousand Five Hundred Forty (5,540)
shares of treasury (non-voting) stock.  Assuming no shareholder of either
Twentieth or Horizon exercises any dissenters' rights and assuming no adjustment
is made to the exchange ratio, approximately One Million Eight Hundred Eighteen
Thousand (1,818,000) shares of Horizon common stock will be issued to the
Twentieth shareholders, resulting in a total of approximately Four Million Six
Hundred Fifty Three Thousand Six Hundred Seventy (4,653,670) shares of Horizon
common stock issued and outstanding, including the aforesaid treasury stock,
immediately after completion of the Merger.

     At the Horizon Shareholders' Meeting, the shareholders of Horizon will be
asked to vote in favor of a proposal to amend the Horizon Articles of
Incorporation by increasing the authorized capital stock of Horizon to Twenty
Million Dollars ($20,000,000) consisting of Twenty Million (20,000,000) shares
of common stock, One Dollar ($1.00) par value per share.  By increasing the
authorized capital stock of Horizon, its Board of Directors will be in a
position to consider additional acquisitions  in which Horizon Stock would be
issued and to take other actions related to the issuance of additional stock.

     The following is a brief summary of Horizon common stock, relevant
provisions of West Virginia law and Horizon's Articles of Incorporation.  The
following is not intended to be a complete  description of Horizon common stock
and is qualified in its entirety by reference to the West Virginia Corporation
Act and Horizon's Articles of Incorporation and Bylaws.

VOTING RIGHTS

     The holders of Horizon's common stock possess all voting rights in Horizon.
Except in the election of directors, for which cumulative voting rights are
granted by State law, each Horizon shareholder is entitled to one vote for each
share of Horizon common stock registered in his or her name.  In all elections
of directors, shareholders will have the right to vote the number of shares
owned by him or her for as many persons as there are directors to be elected, or
to cumulate such shares and to give one candidate as many votes as the number of
directors multiplied by the number of his or her shares shall equal, or to
distribute them on the same principle among as many candidates as he or she
shall think fit.

DIVIDEND RIGHTS

     The Horizon Shareholders are entitled to receive dividends when, as and if
declared by the Horizon Board of Directors out of funds legally available
therefore.


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<PAGE>   88
PREEMPTIVE RIGHTS

     The Horizon shareholders do not have any preemptive or preferential right
to purchase or subscribe for any additional shares of Horizon common stock that
may be issued by Horizon.

ASSESSMENT AND REDEMPTION

     Horizon common stock has no conversion rights and is not subject to
mandatory redemption.  All shares issued pursuant to the Merger will be fully
paid and nonassessable.

LIQUIDATION RIGHTS

     In the event of liquidation or dissolution of Horizon, either voluntary or
involuntary, the holders of the Horizon common stock will be entitled to receive
pro rata such net assets of Horizon as are distributable to shareholders in
respect of shares held by them after payment of all liabilities and senior
securities, if any, of Horizon.


                  CERTAIN DIFFERENCES IN THE RIGHTS OF HOLDERS
                      OF TWENTIETH STOCK AND HORIZON STOCK

     Upon consummation of the Merger, shareholders of Twentieth, other than
those shareholders who exercise dissenters' rights, will become shareholders of
Horizon.

     As both Twentieth and Horizon are West Virginia corporations, the rights of
the holders of Twentieth stock and Horizon stock are governed by Chapter 31 of
the West Virginia Code which is applicable to West Virginia business
corporations ("Chapter 31").   Accordingly, their respective shareholders'
rights with regard to redemption, liquidation and preemptive rights are
substantially parallel.  With respect to preemptive rights, Horizon's Articles
of Incorporation specifically state that Horizon shareholders do not have
preemptive rights to subscribe for additional stock hereafter issued or
authorized.  Twentieth's Articles of Incorporation make no provision for
preemptive rights.  This means that the Board of Directors of each corporation
has the authority to issue additional shares of stock without first offering
them to existing shareholders for purchase.  After the Merger, Horizon stock
will continue to be available for issuance by the Board of Directors when and as
the Board determines advisable.

     Under West Virginia law, the shareholders of Horizon and Twentieth have
cumulative voting rights with respect to the election of directors and these
rights will continue after the Merger.  Neither group of shareholders has any
conversion rights nor are there any redemption or sinking fund provisions with
respect to their stock.

     The bylaws of Horizon require approval by two-thirds vote of all of the
directors of the Horizon Board of Directors in connection with certain material
corporate action.  Such action includes (i) making a recommendation to the
shareholders to remove a director or a decision not to renominate an existing
director; (ii) materially changing the compensation, duties or employment


                                       74
<PAGE>   89
status of certain executive officers; (iii) approving a corporate
reorganization, sale of assets or merger; and (iv) increasing or decreasing the
number of directors.  The bylaws may be repealed, modified or amended by
two-thirds of all directors of Horizon or by a simple majority of Horizon
shareholders.   Twentieth's bylaws do not contain any similar provision so the
foregoing actions could be taken by a majority of the directors.

     Horizon and Twentieth each look to their respective subsidiaries to pay
dividends in order for each, in turn, to pay dividends.  The ability of a bank
subsidiary to pay a divided is dependent upon its earnings and profitability and
must be done in compliance with applicable state and federal banking law
requirements.  Following the Merger, the dividends paid to Horizon shareholders
will continue to be dependent upon the dividends paid by the Horizon bank
subsidiaries.


                                    OPINIONS

     The validity of the issuance of the Horizon stock will be passed upon by
Robinson & McElwee, Charleston, West Virginia.  Levy, Trautwein & Pancake, L.C.,
Huntington, West Virginia has served as counsel to Twentieth.


                                    EXPERTS

     The consolidated financial statements of Horizon Bancorp, Inc. incorporated
by reference in Horizon Bancorp, Inc.'s Annual Report on Form 10-K for the year
ended December 31, 1995, have been audited by Ernst & Young LLP, independent
auditors, as set forth in their report thereon incorporated by reference therein
and incorporated herein by reference. Such consolidated financial statements are
incorporated herein by reference in reliance upon such report given upon the
authority of such firm as experts in accounting and auditing.

     The consolidated financial statements of Twentieth Bancorp, Inc. 
incorporated by reference in Twentieth Bancorp, Inc.'s Annual Report on Form
10-K for the year ended December 31, 1995, have been audited by Diamond,
Leftwich, Goheen & Dunn, independent auditors, as set forth in their report
thereon incorporated by reference therein and incorporated herein by reference.
Such consolidated financial statements are incorporated herein by reference in
reliance upon such report given upon the authority of such firm as experts in
accounting and auditing.


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<PAGE>   90
                                   APPENDIX I


                       PLAN OF MERGER AND REORGANIZATION
                                 BY AND BETWEEN
                            TWENTIETH BANCORP, INC.
                                      AND
                             HORIZON BANCORP, INC.


     THIS  AGREEMENT (hereinafter called "Agreement") is entered into as of the
6th day February, 1996, by and between TWENTIETH BANCORP, INC.  ("Twentieth
Bancorp") and HORIZON BANCORP, INC. ("Horizon Bancorp").

     WHEREAS, Twentieth Bancorp is a West Virginia bank holding company with its
principal office and place of business located in Huntington, West Virginia; and

     WHEREAS, Twentieth Bancorp is the sole shareholder of The Twentieth Street
Bank, a West Virginia banking corporation with its principal office and place of
business located in Huntington, West Virginia (the "Bank"); and

     WHEREAS, Horizon Bancorp is a West Virginia bank holding company with its
principal office and place of business located in Beckley, West Virginia; and

     WHEREAS, Horizon Bancorp and Twentieth Bancorp have agreed that it is in
their mutual best interests and in the best interests of their respective
shareholders for Twentieth Bancorp to be merged with and into Horizon Bancorp
with the effect that each of the outstanding shares of Twentieth Bancorp's $1.00
par value common stock ("Twentieth Bancorp Stock") will be converted into newly
issued shares of Horizon Bancorp's $1.00 par value  common stock ("Horizon
Bancorp Stock"), all in the manner and upon the terms and conditions contained
in this Agreement (the "Merger"); and

     WHEREAS, to effectuate the foregoing, Horizon Bancorp and Twentieth Bancorp
desire to adopt this Agreement as a plan of reorganization in accordance with
the provisions of Section 368(a) of the Internal Revenue Code of 1986, as
amended; and

     WHEREAS, Twentieth Bancorp's Board of Directors has approved this Agreement
and will recommend to Twentieth Bancorp's shareholders that they approve the
transactions described herein; and

     WHEREAS, Horizon Bancorp's Board of Directors has approved this Agreement
and will recommend to the Horizon Bancorp's shareholders that they approve the
transactions described herein.


                                    App. I-1
<PAGE>   91

     NOW, THEREFORE, in consideration of the premises, the mutual benefits to be
derived from this Agreement, and of the representations, warranties, conditions,
covenants and promises herein contained, and subject to the terms and conditions
hereof, Horizon Bancorp and Twentieth Bancorp hereby adopt and make this
Agreement and mutually agree as follows:


                         ARTICLE I.  THE PLAN OF MERGER

1.1. NAMES OF MERGING CORPORATIONS.  The names of the corporations proposed to
be merged are TWENTIETH BANCORP, INC. ("Twentieth Bancorp") and HORIZON
BANCORP, INC. ("Horizon Bancorp").

1.2. NATURE OF TRANSACTION. Subject to the provisions of this Agreement, at the
"Effective Time", defined below, Twentieth Bancorp shall be merged into and
with Horizon Bancorp (the "Merger").

1.3. EFFECT OF MERGER; SURVIVING CORPORATION; CHANGE OF CORPORATE NAME. At the
Effective Time and by reason of the Merger, the separate corporate existence of
Twentieth Bancorp shall cease while the corporate existence of Horizon Bancorp
as the surviving corporation in the Merger shall continue with all of its
purposes, objects, rights, privileges, powers and franchises, all of which
shall be unaffected and unimpaired by the Merger.  Following the Merger, the
Bank shall operate as a wholly-owned banking subsidiary of Horizon Bancorp and,
as a West Virginia banking corporation, will conduct its business at the then
legally established branches and main offices of the Bank.

1.4. ASSETS AND LIABILITIES OF TWENTIETH BANCORP.  At the Effective Time and by
reason of the Merger, and in accordance with applicable law, all of the
property, assets and rights of every kind and character of Twentieth Bancorp
(including without limitation all real, personal or mixed property, all of the
Bank's issued and outstanding shares of capital stock, all debts due on
whatever account, all other choses in action, insurance policies, and every
other interest of or belonging to or due to Twentieth Bancorp, whether tangible
or intangible) shall be transferred to and vest in Horizon Bancorp, and Horizon
Bancorp shall succeed to all the rights, privileges, immunities, powers,
purposes and franchises of a public or private nature and shall assume the
liabilities and lawful obligations of Twentieth Bancorp, all without any
conveyance, assignment or further act or deed.

1.5. CONVERSION AND EXCHANGE OF STOCK.

A.   CONVERSION OF TWENTIETH BANCORP STOCK. Except as otherwise provided herein,
     at the Effective Time all rights of Twentieth Bancorp's shareholders with
     respect to all then outstanding shares of Twentieth Bancorp Stock shall
     cease to exist and the holders of shares of Twentieth Bancorp Stock shall
     cease to be, and shall have no further rights as, shareholders of Twentieth
     Bancorp.  As consideration for and to effectuate the Merger (and except as
     otherwise provided herein), each such outstanding share of Twentieth
     Bancorp Stock (other than shares held by Twentieth Bancorp as treasury
     shares or as to which "Dissenters Rights" are properly exercised) shall be
     converted, without any action on the part of the holder of such share, into
     1.01 shares of Horizon Bancorp common stock (hereinafter the "Exchange
     Ratio").  For example, a Twentieth Bancorp shareholder having record
     ownership of 1,000 shares of Twentieth Bancorp Stock at the Effective Time
     shall receive in exchange therefor 1,010 shares of Horizon Bancorp Stock.
     In the event of any stock split, stock dividend or


                                    App. I-2
<PAGE>   92
     other recapitalization by Horizon Bancorp, the Exchange Ratio shall be
     adjusted proportionately.

B.   EXCHANGE PROCEDURES. Following the Effective Time, certificates
     representing shares of Twentieth Bancorp Stock outstanding at the Effective
     Time (herein sometimes referred to as "Old Certificates") shall evidence
     only the right of the registered holder thereof to receive, and may be
     exchanged for, Horizon Bancorp Stock or in the case of shareholders who
     properly have exercised Dissenters Rights, cash in an amount determined as
     provided by law.

          At the Effective Time, Horizon Bancorp shall issue and deliver to
     Harris Trust and Savings Bank, Chicago, Illinois, in its capacity as the
     transfer agent of Horizon Bancorp Stock (the "Transfer Agent"), one
     certificate representing the aggregate number of whole shares of Horizon
     Bancorp Stock, into which outstanding shares of Twentieth Bancorp Stock
     have been converted as provided above.  As promptly as practicable
     following the Effective Time, Horizon Bancorp shall send or cause to be
     sent to each former shareholder of Twentieth Bancorp of record immediately
     prior to the Effective Time written instructions and transmittal materials
     (a "Transmittal Letter") for use in surrendering Old Certificates to the
     Transfer Agent.  Upon the proper surrender and delivery to the Transfer
     Agent (in accordance with Horizon Bancorp's above instructions, and
     accompanied by a properly completed Transmittal Letter) by a former
     shareholder of Twentieth Bancorp of his or her Old Certificates(s), and in
     exchange therefor, the Transfer Agent shall issue, register and deliver to
     the shareholder a certificate evidencing the number of shares of Horizon
     Bancorp Stock to which the shareholder is entitled.

          Following the Effective Time there shall be no further transfers of
     Twentieth Bancorp Stock on the stock transfer books of Twentieth Bancorp or
     the registration of any transfer of an Old Certificate by any holder
     thereof, and the surrender of each Old Certificate as provided herein must
     be made by, or on behalf of its holder of record at the Effective Time.

C.   TREATMENT OF FRACTIONAL SHARES.  No scrip or certificates representing
     fractional shares of Horizon Bancorp Stock will be issued to any former
     shareholder of Twentieth Bancorp, and, except as provided below, no such
     shareholder will have any right to vote or receive any dividend or other
     distribution on, or any other right with respect to, any fraction of a
     share of Horizon Bancorp Stock resulting from the above exchange.  In the
     event the exchange of shares results in the creation of fractional shares,
     in lieu of the issuance of fractional shares of Horizon Bancorp Stock,
     Horizon Bancorp will deliver cash to the Transfer Agent in an amount equal
     to the aggregate "Market Value" as defined below, of all such fractional
     shares, and in such event the Transfer Agent shall divide such cash among
     and remit it (without interest) to the former shareholders of Twentieth
     Bancorp in accordance with their respective interests.  "Market Value"
     shall mean the average of the reported daily closing prices of Horizon
     Bancorp Stock on the Nasdaq National Market during the period of ten (10)
     consecutive trading days ending on the business day immediately preceding
     the date of the special meeting of shareholders of Twentieth Bancorp called
     for purposes of approving the Merger.

D.   SURRENDER OF CERTIFICATES. Subject to the paragraph below concerning lost 
     certificates, no


                                    App. I-3
<PAGE>   93
     Horizon Bancorp Stock certificate shall be delivered to any former
     shareholder of Twentieth Bancorp unless and until such shareholder shall
     have properly surrendered to the Transfer Agent the old Certificate(s)
     formerly representing his or her shares of Twentieth Bancorp Stock,
     together with a properly completed Transmittal Letter in such form as shall
     be provided to the shareholder by Horizon Bancorp for that purpose.
     Further, until such Old Certificate(s) are so surrendered, no dividend or
     other distribution payable to holders of record of Horizon Bancorp Stock as
     of any date subsequent to the Effective Time shall be delivered to the
     holder of such Old Certificate(s). However, subject to prior escheatment
     under applicable law, upon the proper surrender of such Old Certificate(s)
     the Transfer Agent shall pay to the registered holder of the shares of
     Horizon Bancorp Stock represented by such Old Certificate(s) the amount of
     any such dividends or other distributions which have accrued but remain
     unpaid with respect to such shares.  Neither Twentieth Bancorp, Horizon
     Bancorp nor the Transfer Agent shall have any obligation to pay any
     interest on any such dividends or distributions for any period prior to
     such payment.

E.   DISSENTERS. Any shareholder of Twentieth Bancorp who properly exercises the
     right of dissent and appraisal with respect to the Merger as provided in
     Sections 31-1-122 and 31-1-123 of the West Virginia Code of 1931, as
     amended (the "West Virginia Code") ("Dissenters Rights") shall be entitled
     to receive payment of the fair value of his or her shares of Twentieth
     Bancorp stock in the manner and pursuant to the procedures provided
     therein.  Shares of Twentieth Bancorp Stock held by persons who exercise
     Dissenters Rights shall not be converted into Horizon Bancorp Stock;
     provided, however, that if any shareholder of Twentieth Bancorp who
     exercises Dissenters Rights shall fail to perfect his or her right to
     receive cash or effectively shall waive or lose such right, then each of
     his or her shares of Twentieth Bancorp Stock, at Horizon Bancorp's sole
     option, shall be deemed to have been converted into Horizon Bancorp Stock
     as of the Effective Time.  Any shares of Horizon Bancorp Stock authorized
     to be issued pursuant to this Agreement but not exchanged for shares of
     Twentieth Bancorp Stock because of the exercise of Dissenters Rights may be
     sold by the Transfer Agent at public auction or by private sale, or through
     a dealer or by any other reasonable method, at its election, for the best
     available price, and the net proceeds of any such sale shall be retained by
     Horizon Bancorp.

F.   LOST CERTIFICATES.  Any shareholder of Twentieth Bancorp whose certificate
     evidencing shares of Twentieth Bancorp Stock has been lost, destroyed,
     stolen or otherwise is missing shall be entitled to receive a certificate
     representing the shares of Horizon Bancorp Stock to which he or she is
     entitled in accordance with and upon compliance with conditions imposed by
     the Transfer Agent or Horizon Bancorp (including without limitation a
     requirement that the shareholder provide a lost instruments indemnity or
     surety bond in form, substance and amount satisfactory to the Transfer
     Agent and Horizon Bancorp).

G.   OUTSTANDING HORIZON BANCORP STOCK.  The status of the shares of Horizon
     Bancorp Stock which are outstanding immediately prior to the Effective Time
     shall not be affected by the Merger.

H.   OUTSTANDING STOCK OF THE BANK.  Except as provided in Paragraph 1.4 above,
     the status of the shares of capital stock of the Bank which are outstanding
     immediately prior to the Effective Time shall not be affected by the
     Merger.


                                    App. I-4
<PAGE>   94

1.6.  CERTIFICATE OF INCORPORATION, BYLAWS AND MANAGEMENT.  The Certificate of
Incorporation and Bylaws of Horizon Bancorp in effect at the Effective Time
shall be the Certificate of Incorporation and Bylaws of Horizon Bancorp as the
surviving corporation.  The officers and directors of Horizon Bancorp in office
at the Effective Time shall continue to hold such offices until removed as
provided by law or until the election or appointment of their respective
successors.

1.7.  CLOSING AND EFFECTIVE TIME.  The closing of the transactions contemplated
by this Agreement (the "Closing") shall take place at the offices of Robinson &
McElwee in Charleston, West Virginia, or at such other place as Horizon Bancorp
shall designate, on a date specified by Horizon Bancorp (the "Closing Date")
after the expiration of any and all required waiting periods following the
effective date of required approvals of the Merger by governmental or
regulatory authorities.  At the Closing, Horizon Bancorp and Twentieth Bancorp
shall take such actions (including without limitation the delivery of certain
closing documents and the execution of a Certificate of Merger under West
Virginia law) as are required herein and as otherwise shall be required by law
to consummate the Merger and cause it to become effective.

     Subject to the terms and conditions set forth herein (including without
limitation the receipt of all required approvals of governmental and regulatory
authorities), the Merger shall become effective on the date and at the time (the
"Effective Time") specified in the Certificate of Merger filed with the
appropriate governmental body in accordance with law; provided, however, that
the Effective Time shall in no event be more than ten (10) days following the
Closing Date.

1.8  USE OF ACQUISITION SUBSIDIARY.  Horizon Bancorp reserves the right to form
a wholly-owned subsidiary to be merged with Twentieth Bancorp in which case all
terms and conditions of this Agreement shall remain the same except that (1)
the subsidiary shall adopt and agree to be bound by this Agreement, (2) if
required by Horizon Bancorp a separate merger agreement reflecting the
substantive terms as stated herein of the transaction shall be entered into by
the subsidiary and Twentieth Bancorp and (3) Twentieth Bancorp shall be merged
into the subsidiary rather than into Horizon Bancorp.


                  ARTICLE II.  REPRESENTATIONS AND WARRANTIES

2.1.  REPRESENTATIONS AND WARRANTIES OF TWENTIETH BANCORP.  Except as otherwise
disclosed herein or previously disclosed to Horizon Bancorp in writing in the
form of a document specifically designated as a "Disclosure Statement" (the
"Twentieth Bancorp Disclosure Statement") which shall be delivered by Twentieth
Bancorp to Horizon Bancorp within ten (10) days of the execution of this
Agreement, Twentieth Bancorp hereby represents and warrants to Horizon Bancorp
as follows:

A.   ORGANIZATION; STANDING; POWER.  Twentieth Bancorp and the Bank (i) are duly
     organized and incorporated, validly existing and in good standing (as a
     holding company and a banking corporation, respectively) under the laws of
     the State of West Virginia; (ii) have all requisite power and authority
     (corporate and other) to own, lease and operate their properties and to
     carry on their business as now being conducted; (iii) are duly qualified to
     do business and are


                                    App. I-5
<PAGE>   95
     in good standing in each other jurisdiction in which the character of the
     properties owned, leased or operated by them therein or in which the
     transaction of their business makes such qualification necessary, except
     where failure so to qualify would not have a material adverse effect on
     Twentieth Bancorp or the Bank; and  (iv) are not transacting business or
     operating any properties owned or leased by them in violation of any
     provision of federal, state or local law or any rule or regulation
     promulgated thereunder, which violation would have a material adverse
     effect on Twentieth Bancorp or the Bank.

B.   CAPITAL STOCK. Twentieth Bancorp's authorized capital stock consists of
     Three Million Six Hundred Thousand (3,600,000) shares of Twentieth Bancorp
     Stock, of which One Million Eight Hundred Thousand (1,800,000) shares are
     issued and outstanding and constitute Twentieth Bancorp's only outstanding
     securities.

          Each outstanding share of Twentieth Bancorp Stock (i) has been duly
     authorized and is validly issued and outstanding, and is fully paid and
     nonassessable, (ii) has not been issued in violation of the preemptive
     rights of any shareholder, and (iii) is subject to the registration and
     reporting requirements of the Securities Exchange Act of 1934, as amended
     (the "1934 Act").

          The Bank's authorized capital stock consists of one million eighty
     eight thousand two hundred and fifty (1,088,250) shares of common stock,
     Ten Dollars ($10.00) par value ("Bank Stock"), of which one million eighty
     eight thousand two hundred and fifty (1,088,250) shares are outstanding and
     issued to Twentieth Bancorp and which constitute the Bank's only
     outstanding securities. Each outstanding share of Bank Stock has been duly
     authorized and is validly issued and outstanding and is fully paid and
     nonassessable.

C.   PRINCIPAL SHAREHOLDERS. Except as set forth in Twentieth Bancorp's
     Disclosure Statement, no person or entity is known to Twentieth Bancorp to
     beneficially own, directly or indirectly, more than five percent (5%) of
     the outstanding shares of Twentieth Bancorp Stock.

D.   SUBSIDIARIES.  The Bank is Twentieth Bancorp's only subsidiary.  The Bank
     has no subsidiaries.  Neither Twentieth Bancorp nor the Bank own any stock
     or other equity interest in any other corporation, service corporation,
     joint venture, partnership or other entity.

E.   CONVERTIBLE SECURITIES, OPTIONS, ETC.  Twentieth Bancorp and the Bank do
     not have any outstanding (i) securities or other obligations (including
     debentures or other debt instruments) which are convertible into shares of
     Twentieth Bancorp Stock or Bank Stock or any other securities of Twentieth
     Bancorp or the Bank, (ii) options, warrants, rights, calls or other
     commitments of any nature which entitle any person to receive or acquire
     any shares of Twentieth Bancorp Stock, or Bank Stock or any other
     securities of Twentieth Bancorp or the Bank, or (iii) plan, agreement or
     other arrangement pursuant to which shares of Twentieth Bancorp Stock or
     Bank Stock or any other securities of Twentieth Bancorp or the Bank or
     options, warrants, rights, calls or other commitments of any nature
     pertaining thereto, have been or will be issued.


                                    App. I-6
<PAGE>   96
F.   AUTHORIZATION AND VALIDITY OF AGREEMENT.  This Agreement has been duly and
     validly approved by Twentieth Bancorp's Board of Directors and executed and
     delivered on Twentieth Bancorp's behalf.  Subject only to approval of this
     Agreement by the shareholders of Twentieth Bancorp in the manner required
     by law and required regulatory approval, (i) Twentieth Bancorp has the
     corporate power and authority to execute and deliver this Agreement and to
     perform its obligations and agreements and carry out the transactions
     described herein, (ii) all corporate proceedings and approvals required to
     authorize Twentieth Bancorp to enter into this Agreement and to perform its
     obligations and agreements and carry out the transactions described herein
     have been duly and properly completed or obtained, and (iii) this Agreement
     constitutes the valid and binding agreement of Twentieth Bancorp
     enforceable in accordance with its terms (except to the extent
     enforceability may be limited by (A) applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws from time to time in effect
     which affect creditors' rights generally, (B) legal and equitable
     limitations on the availability of injunctive relief, specific performance
     and other equitable remedies, and (C) general principles of equity and
     applicable laws or court decisions limiting the enforceability of
     indemnification provisions).

G.   VALIDITY OF TRANSACTIONS AND ABSENCE OF REQUIRED CONSENTS OR WAIVERS.
     Neither the execution and delivery of this Agreement, nor the consummation
     of the transactions described herein, nor compliance by Twentieth Bancorp
     with any of its obligations or agreements contained herein, will: (i)
     conflict with or result in a breach of the terms and conditions of, or
     constitute a default or violation under any provision of, the Articles of
     Incorporation or Bylaws, of Twentieth Bancorp or the Bank or any material
     contract, agreement, lease, mortgage, note, bond, indenture, license, or
     obligation or understanding (oral or written) to which Twentieth Bancorp or
     the Bank is bound or by which it, its business, capital stock or any of its
     properties or assets may be affected; (ii) result in the creation or
     imposition of any lien, claim, interest, charge, restriction or encumbrance
     upon any of the properties or assets of Twentieth Bancorp or the Bank;
     (iii) violate any applicable federal or state statute, law, rule or
     regulation, or any judgment, order, writ, injunction or decree of any
     court, administrative or regulatory agency or governmental body; (iv)
     result in the acceleration of any obligation or indebtedness of Twentieth
     Bancorp or the Bank; or (v) interfere with or otherwise adversely affect
     the ability of either Twentieth Bancorp or the Bank to carry on its
     business as presently conducted, or interfere with or otherwise adversely
     affect the ability of either Horizon Bancorp or the Bank to carry on such
     business after the Effective Time.

          No consents, approvals or waivers are required to be obtained from any
     person or entity in connection with Twentieth Bancorp's execution and
     delivery of this Agreement, or the performance of its obligations or
     agreements or the consummation of the transactions described herein, except
     for required approvals of Twentieth Bancorp's shareholders and of
     governmental or regulatory authorities.

H.   REGULATORY REPORTS. Twentieth Bancorp and the Bank have timely filed all
     reports, registrations and statements, together with any amendments
     required to be made with respect thereto, that are required to be filed
     with (i) the Board of Governors of the Federal Reserve System (the "FRB"),
     (ii) the Federal Deposit Insurance Corporation (the "FDIC") , (iii) the
     West Virginia Board of Banking and Financial Institutions (the "West
     Virginia Board"), (iv) the Securities and Exchange Commission (the "SEC"),
     and/or (v) any other governmental or


                                    App. I-7
<PAGE>   97
     regulatory authorities having jurisdiction over Twentieth Bancorp or the
     Bank (including all reports required to be filed under the 1934 Act).  All
     such reports, registrations and statements filed by Twentieth Bancorp and
     the Bank with the FRB, the FDIC, the West Virginia Board, SEC or other such
     regulatory authority are collectively referred to hereinafter as the
     "Regulatory Reports". As of their respective dates, the Regulatory Reports
     complied in all material respects with all the statutes, rules and
     regulations enforced or promulgated by the regulatory authority with which
     they were filed and did not 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 therein, in light of the circumstances under which
     they were made, not misleading; and, neither Twentieth Bancorp nor the Bank
     has been notified that any such Regulatory Reports were deficient in any
     material respect as to form or content.  Following the date of this
     Agreement, Twentieth Bancorp shall deliver to Horizon Bancorp, simultaneous
     with the filing thereof, a copy of each report, registration, statement or
     other regulatory filing made by Twentieth Bancorp or the Bank with the FRB,
     the FDIC, the West Virginia Board, the SEC or any other regulatory
     authority.

I.   FINANCIAL STATEMENTS.  Twentieth Bancorp has delivered to Horizon
     Bancorp a copy of its consolidated balance sheets as of December 31, 1993
     and December 31, 1994, and its consolidated statements of operations,
     changes in stockholders' equity and cash flows for the years ended December
     31, 1992, December 31, 1993 and December 31, 1994, together with notes
     thereto and the audit reports (collectively, the "Twentieth Bancorp
     Financial Statements"), and (ii) its consolidated balance sheet as of
     September 30, 1995 and its statement of operations for the eleven (11)
     months ended November 31, 1995 (the "Twentieth Bancorp Interim Financial
     Statements"); and, following the date of this Agreement, Twentieth Bancorp
     promptly will deliver to Horizon Bancorp all other annual or interim
     financial statements prepared by or for Twentieth Bancorp or the Bank.  The
     Twentieth Bancorp Financial Statements and the Twentieth Bancorp Interim
     Financial Statements (including any related notes and schedules thereto)
     were prepared in accordance with generally accepted accounting principles
     ("GAAP") applied on a consistent basis throughout the periods indicated and
     with Regulation S-X of the 1934 Securities Exchange Act and present fairly
     Twentieth Bancorp's financial position, results of operations and cash
     flows as of the dates indicated and for the periods specified therein. The
     Twentieth Bancorp Financial Statements have been audited by Diamond,
     Leftwich, Goheen & Dunn, Twentieth Bancorp's independent certified public
     accountants.

J.   TAX RETURNS AND OTHER TAX MATTERS. (i) Twentieth Bancorp and the Bank have
     timely filed or caused to be filed all federal, state and local tax returns
     and reports which are required by law to have been filed, and, to the best
     knowledge and belief of management of Twentieth Bancorp, all such returns
     and reports were true, correct and complete and contained all material
     information required to be contained therein; (ii) all federal, state and
     local income, business and occupation, franchise, sales, use, property,
     excise, withholding, employment and other taxes (including interest and
     penalties), charges and assessments which have become due from or been
     assessed or levied against Twentieth Bancorp or the Bank or their
     respective properties have been fully paid or, if not yet due, a reserve or
     accrual which is adequate in all material respects for the payment of all
     such taxes to be paid and the obligation for such unpaid taxes is reflected
     on the Twentieth Bancorp Financial Statements; (iii) except


                                    App. I-8
<PAGE>   98
     as set forth in Twentieth Bancorp's Disclosure Statement, the tax returns
     and reports of Twentieth Bancorp and the Bank have not been subject to
     audit by the Internal Revenue Service (the "IRS") or the Department of Tax
     and Revenue of the State of West Virginia in the last ten (10) years and
     neither Twentieth Bancorp nor the Bank has received any indication of the
     pendency of any audit or examination in connection with any tax return or
     report and have no knowledge that any such return or report is subject to
     adjustment; and (iv) neither Twentieth Bancorp or the Bank has executed any
     waiver or extended the statute of limitations (or been asked to execute a
     waiver or extend a statute of limitation) with respect to any tax year, the
     audit of any tax return or report or the assessment or collection of any
     tax.

K.   ABSENCE OF MATERIAL ADVERSE CHANGES.  Since December 31, 1994, Twentieth
     Bancorp and the Bank have conducted their business only in the ordinary
     course, and there has been no material adverse change, and there has
     occurred no event or development and there currently exists no condition or
     circumstance which, with the lapse of time or otherwise, may or could
     cause, create or result in a material adverse change, in or affecting the
     financial condition of Twentieth Bancorp or the Bank or in their results of
     operations, prospects, business, assets, loan portfolio, investments,
     properties or operations except as may be set forth in Twentieth Bancorp's
     Disclosure Statement.

L.   ABSENCE OF UNDISCLOSED LIABILITIES.  Twentieth Bancorp and the Bank do not
     have any liabilities or obligations, whether matured or unmatured, accrued,
     absolute, contingent or otherwise, whether due or to become due (including
     without limitation tax liabilities or unfunded liabilities under employee
     benefit plans or arrangements), other than (i) those reflected in the
     Twentieth Bancorp Financial Statements or the Twentieth Bancorp Interim
     Financial Statements, or (ii) obligations or liabilities incurred in the
     ordinary course of their business since November 30, 1995 which are not
     individually or in the aggregate, material to Twentieth Bancorp and the
     Bank.

M.   COMPLIANCE WITH EXISTING OBLIGATIONS. Twentieth Bancorp and the Bank have
     performed in all material respects all obligations required to be performed
     by them under, and they are not in default in any respect under, or in
     violation in any respect of, the terms and conditions of their respective
     Articles of Incorporation or Bylaws, and/or any contract, agreement, lease,
     mortgage, note, bond, indenture, license, obligation, understanding or
     other undertaking (whether oral or written) to which Twentieth Bancorp and
     the Bank is bound or by which the business, capital stock or any property
     or asset of Twentieth Bancorp or the Bank may be affected.

N.   LITIGATION AND COMPLIANCE WITH LAW.

          (i)      There are no actions, suits, arbitrations, controversies or
     other proceedings or investigations (or, to the best knowledge and belief
     of management of Twentieth Bancorp and the Bank any facts or circumstances
     which reasonably could result in such), including without limitation any
     such action by any governmental or regulatory authority, which currently
     exist or are ongoing, pending or, to the best knowledge and belief of
     management of Twentieth Bancorp and the Bank threatened, contemplated or
     probable of assertion,


                                    App. I-9
<PAGE>   99
     against, relating to or otherwise affecting Twentieth Bancorp or the Bank
     or any of their properties, assets or employees which, if determined
     adversely, could result in liability on the part of Twentieth Bancorp or
     the Bank for, or subject Twentieth Bancorp or the Bank to, monetary
     damages, fines or penalties or an injunction, or which could have a
     material adverse effect on the financial condition, results of operations,
     prospects, business, assets, loan portfolio, investments, properties or
     operations of Twentieth Bancorp or the Bank or on the ability of Twentieth
     Bancorp to consummate the Merger.

          (ii)     Twentieth Bancorp and the Bank have all licenses, permits,
     orders, authorizations or approvals ("Permits") of any federal, state,
     local or foreign governmental or regulatory body that are material to or
     necessary for the conduct of their business or to own, lease and operate
     their properties; all such Permits are in full force and effect; no
     violations are or have been recorded in respect of any such Permits; and no
     proceeding is pending or, to the best knowledge of management of Twentieth
     Bancorp or the Bank, threatened or probable of assertion to suspend,
     cancel, revoke or limit any Permit.

          (iii)    With the exception of that certain Memorandum of
     Understanding dated as of December 12, 1994, a copy of which has been
     provided to Horizon Bancorp, neither Twentieth Bancorp or the Bank is
     subject to any supervisory agreement, enforcement order, writ, injunction,
     capital directive, supervisory directive, memorandum of understanding or
     other similar agreement, order, directive, memorandum or consent of, with
     or issued by any regulatory or other governmental authority (including
     without limitation the FRB, the FDIC or the West Virginia Board) relating
     to its financial condition, directors or officers, employees, operations,
     capital, regulatory compliance or otherwise; there are no judgments,
     orders, stipulations, injunctions, decrees or awards against Twentieth
     Bancorp or the Bank which in any manner limit, restrict, regulate, enjoin
     or prohibit any present or past business or practice of Twentieth Bancorp
     or the Bank; and, neither Twentieth Bancorp nor the Bank has been advised
     nor has any reason to believe that any regulatory or other governmental
     authority or any court is contemplating, threatening or requesting the
     issuance of any such agreement, order, injunction, directive, memorandum,
     judgment, stipulation, decree or award.

          (iv)     Neither Twentieth Bancorp nor the Bank is in violation or
     default in any material respect under, and each has complied in all
     material respects with, all laws, statutes, ordinances, rules, regulations,
     orders, writs, injunctions or decrees of any court or federal, state,
     municipal or other governmental or regulatory authority having jurisdiction
     or authority over it or its business operations, properties or assets
     (including without limitation all provisions of West Virginia law relating
     to usury, the Consumer Credit Protection Act, and all other laws and
     regulations applicable to extensions of credit by the Bank) and to the best
     of the knowledge and belief of the directors and officers of Twentieth
     Bancorp and Bank, there is no basis for any claim by any person or
     authority for compensation, reimbursement or damages or otherwise for any
     violation of any of the foregoing.

O.   REAL PROPERTIES.  The Twentieth Bancorp Disclosure Statement and/or its
     Financial Statements lists all real property owned by Twentieth Bancorp and
     the Bank including improvements thereon (including the Bank's banking
     facilities and all other real estate or foreclosed properties including
     improvements thereon owned by the Bank) ("Real Property")


                                   App. I-10
<PAGE>   100
     and all leases pertaining to any such Real Property to which Twentieth
     Bancorp or the Bank is a party ("Real Property Leases").  With respect to
     all Real Property, Twentieth Bancorp or the Bank has good and marketable
     fee simple title to such Real Property and owns the same free and clear of
     all mortgages, liens, leases, encumbrances, title defects and exceptions to
     title other than (i) the lien of current taxes not yet due and payable, and
     (ii) such imperfections of title and restrictions, covenants and easements
     (including utility easements) which do not materially affect the value of
     the Real Property and which do not and will not materially detract from,
     interfere with or restrict the present or future use of the properties
     subject thereto or affected thereby.  With respect to each Real Property
     Lease (i) such lease is valid and enforceable in accordance with its terms,
     (ii) there currently exists no circumstance or condition which constitutes
     an event of default by Twentieth Bancorp or the Bank (as lessor or lessee)
     or its respective lessor or lessee which, with the passage of time or the
     giving of required notices will or could constitute such an event of
     default, and (iii) the execution and delivery of this Agreement does not
     constitute an event of default thereunder.

          To the best of the knowledge and belief of management of Twentieth
     Bancorp and the Bank, the Real Property complies in all material respects
     with all applicable federal, state and local laws, regulations, ordinances
     or orders of any governmental authority, including those relating to
     zoning, building and use permits, and the Real Property may be used under
     applicable zoning ordinances for commercial purposes as a matter of right
     rather than as a conditional or nonconforming use.

          All improvements and fixtures included in or on the Real Property are
     in good condition and repair, ordinary wear and tear excepted, and there
     does not exist any condition which interferes (or will interfere after the
     Merger) with the use or affects the economic value thereof.

P.   LOANS, ACCOUNTS, NOTES AND OTHER RECEIVABLES.

          (i)      All loans, accounts, notes and other receivables reflected as
     assets on the Bank's books and records (A) have resulted from bona fide
     business transactions in the ordinary course of the Bank's operations, (B)
     in all material respects were made in accordance with the Bank's standard
     loan policies and procedures, and (C) are owned by the Bank free and clear
     of all liens, encumbrances, assignments, participation or repurchase
     agreements or other exceptions to title or to the ownership or collection
     rights of any other person or entity.

          (ii)     All records of the Bank regarding all outstanding loans,
     accounts, notes and other receivables, and all other real estate owned, are
     accurate in all material respects, and, with respect to each loan which the
     Bank's loan documentation indicates is secured by any real or personal
     property or property rights ("Loan Collateral"), such loan is secured by
     valid, perfected and enforceable liens on all such Loan Collateral having
     the priority described in the Bank's records of such loan.

          (iii)    To the best knowledge of management of Twentieth Bancorp and
     the Bank, each loan reflected as an asset on the Bank's books, and each
     guaranty therefor, is the legal,


                                   App. I-11
<PAGE>   101
     valid and binding obligation of the obligor or guarantor thereon, and no
     defense, offset or counterclaim has been asserted with respect to any such
     loan or guaranty.

          (iv)     Twentieth Bancorp previously has furnished to Horizon Bancorp
     (A) a written listing of each loan, extension of credit or other asset of
     the Bank which, as of December 31,1995, is classified by the FRB, the FDIC,
     the West Virginia Board, or by the Bank as "Loss," "Doubtful,"
     "Substandard" or "Special Mention" (or otherwise by words of similar
     import), or which the Bank has designated as a special asset or for special
     handling or placed on any "watch list" because of concerns regarding the
     ultimate collectibility or deteriorating condition of such asset or any
     obligor or Loan Collateral therefor, and (B) a written listing of each loan
     or extension of credit of the Bank which, as of December 31, 1995, was past
     due as to the payment of principal and/or interest, or as to which any
     obligor thereon (including the borrower or any guarantor) otherwise was in
     default, is the subject of a proceeding in bankruptcy or otherwise has
     indicated any inability or intention not to repay such loan or extension of
     credit.  Each such listing is accurate and complete as of the date
     indicated.

          (v)      The Bank's reserve for possible losses (the "Loan Loss
     Reserve") has been established in conformity with GAAP, sound banking
     practices and all applicable requirements of the FRB and rules and policies
     of the FRB, the FDIC, the SEC and the West Virginia Board and, in the best
     judgment of management of Twentieth Bancorp and the Bank, is reasonable in
     view of the size and character of the Bank's loan portfolio, current
     economic conditions and other relevant factors, and is adequate to provide
     for losses relating to or the risk of loss inherent in the Bank's loan
     portfolio and other real estate owned.  At December 31,1995, the Bank's
     Loan Loss Reserve was Two Million Dollars ($2,000,000).

Q.   SECURITIES PORTFOLIO AND INVESTMENTS.  All securities owned by Twentieth
     Bancorp or the Bank (whether owned of record or beneficially) are held free
     and clear of all mortgages, liens, pledges, encumbrances or any other
     restriction or rights of any other person or entity, whether contractual or
     statutory, which would materially impair the ability of Twentieth Bancorp
     or the Bank to dispose freely of any such security and/or otherwise to
     realize the benefits of ownership thereof at any time.  There are no voting
     trusts or other agreements or undertakings to which Twentieth Bancorp or
     the Bank is a party with respect to the voting of any such securities. With
     respect to all "repurchase agreements" to which the Bank has "purchased"
     securities under agreement to resell, the Bank has a valid, perfected first
     lien or security interest in the government securities or other collateral
     securing the repurchase agreement, and the value of the collateral securing
     each such repurchase agreement equals or exceeds the amount of the debt
     owed to the Bank which is secured by such collateral.

          Except for fluctuations in the market values of United States Treasury
     and agency or municipal securities, since December 31, 1994, there has been
     no significant deterioration or material adverse change in the quality, or
     any material decrease in the value, of Twentieth Bancorp's or the Bank's
     securities portfolio as a whole.

R.   PERSONAL PROPERTY AND OTHER ASSETS. All assets of Twentieth Bancorp or the
     Bank other than those other assets referred to in Paragraphs 2.1.o., 2.1.p.
     and 2.1.q above (but including all banking equipment, data processing
     equipment, vehicles, and all other personal property


                                   App. I-12
<PAGE>   102
     located in or used in the operation of each office of the Bank or otherwise
     used by either Twentieth Bancorp or the Bank in the operation of its
     business) are owned by Twentieth Bancorp or the Bank free and clear of all
     liens, encumbrances, leases, title defects or exceptions to title.  All of
     Twentieth Bancorp's and the Bank's personal property material to its
     respective business is in good operating condition and repair, ordinary
     wear and tear excepted.

S.   PATENTS AND TRADEMARKS.  Twentieth Bancorp and the Bank own, possess or
     have the right to use any and all patents, licenses, trademarks, trade
     names, copyrights, trade secrets and proprietary and other confidential
     information necessary to conduct their business as now conducted; and,
     neither Twentieth Bancorp nor the Bank has violated, or currently is  in
     conflict with, any patent, license, trademark, trade name, copyright or
     proprietary right of any other person or entity.

T.   ENVIRONMENTAL MATTERS.

          (i)      Twentieth Bancorp has delivered to Horizon Bancorp copies of
     all written reports, correspondence, notices or other materials, if any, in
     its possession pertaining to environmental surveys or assessments of the
     Real Property or any of the Bank's Loan Collateral and any improvements
     thereon, or to any violation of "Environmental Laws" (as defined below) on,
     affecting or otherwise the Real Property, any Loan Collateral or otherwise
     involving Twentieth Bancorp or the Bank.

          (ii)     There has been no presence, use, production, generation,
     handling, transportation, treatment, storage, disposal, distribution,
     labeling, reporting, testing, processing, emission, discharge, release,
     threatened release, control, removal, clean-up or remediation of any
     Hazardous Substances (as defined below) by any person prior to the date
     hereof on, from or relating to the Real Property or, to the best of the
     knowledge and belief of management of Twentieth Bancorp and the Bank, the
     Loan Collateral, which constitutes a violation of any Environmental Laws.

          (iii)    Neither Twentieth Bancorp nor the Bank is subject to any
     claims, demands, causes of action, suits, proceedings, losses, damages,
     penalties, liabilities, obligations, costs or expenses of any kind and
     nature which arise out of, under or in connection with, or which result
     from or are based upon the presence, use, production, generation, handling,
     transportation, treatment, storage, disposal, distribution, labeling,
     reporting, testing, processing, emission, discharge, release, threatened
     release, control, removal, clean-up or remediation of any Hazardous
     Substances on, from or relating to the Real Property or, to the best of the
     knowledge and belief of management of Twentieth Bancorp and the Bank, any
     Loan Collateral by the Bank or any other person or entity.

          (iv)     No facts, events or conditions relating to the Real Property
     or, to the best knowledge of management of Twentieth Bancorp and the Bank,
     any Loan Collateral, or the operations of the Bank at any of its office
     locations, will prevent, hinder or limit continued compliance with
     Environmental Laws, or give rise to any investigatory, emergency removal,
     remedial or corrective actions, obligations or liabilities (whether
     accrued, absolute, contingent, unliquidated or otherwise) pursuant to
     Environmental Laws.


                                   App. I-13
<PAGE>   103

                 (v)      For purposes of this Agreement, "Environmental Laws"
                          shall include:

                 (A)      all federal, state and local statutes, regulations,
                          ordinances, orders, decrees, and similar provisions
                          having the force or effect of law,

                 (B)      all contractual agreements, and

                 (C)      all common law, concerning public health and safety,
                          worker health and safety, and pollution or protection
                          of the environment, including without limitation all
                          standards of conduct and bases of obligations
                          relating to the presence, use, production,
                          generation, handling, transportation, treatment,
                          storage, disposal, distribution, labeling, reporting,
                          testing, processing, discharge, release, threatened
                          release, control, emergency removal, clean-up or
                          remediation of any Hazardous Substances (including
                          without limitation the Comprehensive Environmental
                          Response, Compensation and Liability Act, the
                          Superfund Amendment and Reauthorization Act, the
                          Federal Insecticide, Fungicide and Rodenticide Act,
                          the Hazardous Materials Transportation Act, the
                          Resource Conservation and Recovery Act, the Clean
                          Water Act, the Clean Air Act, the Toxic Substances
                          Control Act, any "Superfund" or "Superlien" law, the
                          Americans with Disabilities Act, and the Occupational
                          Safety and Health Act), as such may now or at any
                          time hereafter be defined or in effect.

          For purposes of this Agreement, "Hazardous Substances" shall include
     hazardous, toxic or otherwise regulated materials, substances or wastes;
     chemical substances or mixtures; pesticides; pollutants; contaminants;
     toxic chemicals; oil or other petroleum products, byproducts, or
     constituents (including but not limited to crude oil, diesel oil, fuel oil,
     gasoline, lubrication oil, oil refuse, oil mixed with other waste, oil
     sludge, and all other liquid hydrocarbons regardless of specific gravity);
     asbestos or asbestos containing material; flammable explosives;
     polychlorinated biphenyls ("PCBs") or any material containing PCBS;
     radioactive materials; biological micro organisms, viruses, fungi, spores;
     environmental tobacco smoke; radon or radon gas; formaldehyde or any
     material containing formaldehyde; fumigants; any material or substance
     comprising or contributing to conditions known as "sick building syndrome,"
     "building-related illness" or similar conditions (or exposures; and/or any
     hazardous, toxic, regulated or dangerous waste, substance or material
     defined as such by the United States Environmental Protection Agency or any
     other federal, state or local governmental agency or political subdivision
     thereof, or for the purpose of or by any Environmental Laws, as now or at
     any time hereafter may be in effect.

U.   ABSENCE OF BROKERAGE OR FINDERS COMMISSIONS.   Except as set forth in
     Twentieth Bancorp's Disclosure Statement, no person or firm has been
     retained by or has acted on behalf of, pursuant to any agreement,
     arrangement or understanding with, or under the authority of, Twentieth
     Bancorp or its Board of Directors, as a broker, finder or agent or has
     performed similar functions or otherwise is or may be entitled to receive
     or claim a brokerage fee or other commission in connection with the
     transactions described herein, and Twentieth


                                   App. I-14
<PAGE>   104
     Bancorp has not agreed to pay any brokerage fee or other commission to any
     person or entity in connection with the transactions described herein.

V.   EMPLOYMENT AGREEMENTS AND MATTERS.  Neither Twentieth Bancorp nor the Bank
     is a party to or bound by any oral or written employment agreement, express
     or implied, with any of its directors, officers or employees, or to any
     collective bargaining agreement with any of its employees, any labor union
     or any other collective bargaining unit or organization.  Each of Twentieth
     Bancorp and the Bank (i) has paid in full to or accrued on behalf of all
     its respective directors, officers and employees all compensation for labor
     or services rendered, including all wages, salaries, commissions, bonuses,
     fees and other direct compensation for all labor or services performed by
     them to the date of this Agreement and all vacation pay, sick pay,
     severance pay and other amounts promised to the extent required by law or
     when Twentieth Bancorp or the Bank has a policy or practice of making such
     payments, and (ii) is in compliance with all applicable federal, state and
     local laws, statutes, rules and regulations with regard to employment and
     employment practices, terms and conditions, and wages and hours and other
     compensation matters. There is no pending or threatened dispute or strike
     involving Twentieth Bancorp or the Bank and any of their respective
     employees, or any pending or threatened proceeding in which it is asserted
     that Twentieth Bancorp or the Bank has committed an unfair labor practice;
     and, none of Twentieth Bancorp or the Bank is aware of any activity
     involving it or any of its employees seeking to certify a collective
     bargaining unit or engaging in any other labor organization activity.

W.   MATERIAL CONTRACTS.  Except for those documents described in the Twentieth
     Bancorp Disclosure Statement (true, correct and complete copies of which
     have been provided by Twentieth Bancorp to Horizon Bancorp) neither
     Twentieth Bancorp nor the Bank is a party to or bound by any agreement (i)
     involving money or other property in an amount or with a value in excess of
     Fifty Thousand Dollars ($50,000), (ii) which is not to be performed in full
     prior to June 30, 1996, (iii) which calls for the provision of goods or
     services to Twentieth Bancorp or the Bank and cannot be terminated without
     material penalty upon written notice to the other party thereto, (iv) which
     is material to Twentieth Bancorp or the Bank and was not entered into in
     the ordinary course of business, (v) which involves hedging, options or any
     similar trading activity, or interest rate exchanges or swaps, (vi) which
     commits the Bank to extend any loan or credit (with the exception of
     letters of credit, lines of credit and loan commitments extended in the
     ordinary course of the Bank's business), (vii) which involves the purchase
     or sale of any assets of Twentieth Bancorp or the Bank, or the purchase,
     sale, issuance, redemption or transfer of any capital stock or other
     securities of Twentieth Bancorp or the Bank, or (viii) with any director,
     officer or principal shareholder of Twentieth Bancorp or the Bank including
     without limitation any employment or consulting agreement, but not
     including any agreement relating to loans or other banking services which
     were made in the ordinary course of the Bank's business and on
     substantially the same terms and conditions as were prevailing at that time
     for similar agreements with unrelated persons.

          Neither Twentieth Bancorp nor the Bank is in default in any material
     respect, and there has not occurred any event which with the lapse of time
     or giving of notice or both would constitute such a default, under any
     contract, lease, insurance policy, commitment or arrangement to which it is
     a party or by which it or its property is or may be bound or affected


                                   App. I-15
<PAGE>   105
     or under which it or its property receives benefits, where the consequences
     of such default would have a material adverse effect on the financial
     condition, results of operations, prospects, business, assets, loan
     portfolio, investments, properties or operations of Twentieth Bancorp or
     the Bank.

X.   EMPLOYEE BENEFIT PLANS.

          (i)      The Twentieth Bancorp Disclosure Statement contains a true
     and complete list of all bonus, deferred compensation, pension, retirement,
     profit-sharing, thrift, savings, employee stock ownership, stock bonus,
     stock purchase, restricted stock and stock option plans; all employment and
     severance contracts; all medical, dental, health, and life insurance plans;
     all vacation, sickness and other leave plans, disability and death benefit
     plans; and all other employee benefit plans, contracts, or arrangements
     maintained or contributed to by Twentieth Bancorp or the Bank for the
     benefit of any employees, former employees, directors, former directors or
     any of their beneficiaries (collectively, the "Plans"). True and complete
     copies of all Plans, including, but not limited to, any trust instruments
     and/or insurance contracts, if any, forming a part thereof, and all
     amendments thereto, will be promptly supplied to Horizon Bancorp. Except as
     provided in the Twentieth Bancorp Disclosure Statement, neither Twentieth
     Bancorp nor the Bank maintains, sponsors, contributes to or otherwise
     participates in any "Employee Benefit Plan" within the meaning of Section
     3(3) of the Employee Retirement Income Security Act of 1974, as amended
     ("ERISA"), any "Multiemployer Plan" within the meaning of Section 3(37) of
     ERISA, or any "Multiple Employer Welfare Arrangement" within the meaning of
     Section 3(40) of ERISA.  Each Plan which is an "employee pension benefit
     plan" within the meaning of Section 3(2) of ERISA and which is intended to
     be qualified under Section 401(a) of the Internal Revenue Code of  1986, as
     amended (the "Code") has received a determination letter from the IRS and
     neither Twentieth Bancorp nor the Bank is aware of any circumstances
     reasonably likely to result in the revocation or denial of any such
     favorable determination letter.  All reports and returns with respect to
     the Plans (and any Plans previously maintained by Twentieth Bancorp or the
     Bank) required to be filed with any governmental department, agency,
     service or other authority, including without limitation Internal Revenue
     Service Form 5500 (Annual Report), have been properly and timely filed.

          (ii)     All "Employee Benefit Plans" maintained by or otherwise
     covering employees or former employees of Twentieth Bancorp or the Bank to
     the extent subject to ERISA, currently are, and at all times have been, in
     compliance with all material provisions and requirements of ERISA.  There
     is no pending or threatened litigation relating to any Plan or any such
     Plan previously maintained by Twentieth Bancorp or the Bank.  Neither
     Twentieth Bancorp nor the Bank has engaged in a transaction with respect to
     any Plan that could subject Twentieth Bancorp or the Bank to a tax or
     penalty imposed by either Section 4975 of the Code or Section 502(i) of
     ERISA and neither has any welfare or benefit plan which promises or
     provides for post-retirement or post-employment benefits or payments.

          (iii)    Twentieth Bancorp will promptly deliver to Horizon Bancorp a
     true, correct and complete copy (including copies of all amendments
     thereto) of any Retirement Plan of Twentieth Bancorp and the Bank (the
     "Retirement Plan"), together with true, correct and


                                   App. I-16
<PAGE>   106
     complete copies of the summary plan description relating to the Retirement
     Plan, the most recent determination letter received from the IRS regarding
     the Retirement Plan, and the most recent Annual Report (Form 5500 series)
     and related schedules, if any, for the Retirement Plan.

          The Retirement Plan is qualified under the provisions of Section
     401(a) of the Code, the trust under the Retirement Plan is an exempt trust
     under Section  501(a) of the Code, and a determination letter with respect
     to the Retirement Plan to said effect, including a determination letter
     covering the current terms and provisions of the Retirement Plan.  There
     are no issues relating to said qualification or exemption of the Retirement
     Plan currently pending before the IRS, the United States Department of
     Labor, the Pension Benefit Guaranty Corporation or any court.  The
     Retirement Plan and the administration thereof meet (and have met since the
     establishment of the Retirement Plan) all of the applicable requirements of
     ERISA, the Code and all other laws, rules and regulations applicable to the
     Retirement Plan and do not violate (and since the establishment of the
     Retirement Plan have not violated) any of the applicable provisions of
     ERISA, the Code and such other laws, rules and regulations.  Without
     limiting the generality of the foregoing, all reports and returns with
     respect to the Retirement Plan required to be filed with any governmental
     department, agency, service or other authority have been properly and
     timely filed.  There are no issues or disputes with respect to the
     Retirement Plan or the administration thereof currently existing between
     Twentieth Bancorp or the Bank, or any trustee or other fiduciary
     thereunder, and any governmental agency, any current or former employee of
     Twentieth Bancorp or the Bank or beneficiary of any such employee or any
     other person or entity.  No "reportable event" within the meaning of
     Section  4043(b) of ERISA has occurred at any time with respect to the
     Retirement Plan.

          (iv)     No liability under subtitle C or D of Title IV of ERISA has
     been or is expected to be incurred by Twentieth Bancorp or the Bank with
     respect to the Retirement Plan or with respect to any other ongoing, frozen
     or terminated defined benefit pension plan currently or formerly maintained
     by Twentieth Bancorp or the Bank. Neither Twentieth Bancorp nor the Bank
     presently contributes to a "Multiemployer Plan" or has contributed to such
     a plan.  All contributions required to be made pursuant to the terms of
     each of the Plans (including without limitation the Retirement Plan and any
     other "pension plan" (as defined in Section  3(2) of ERISA) maintained by
     Twentieth Bancorp or the Bank) have been timely made.  Neither the
     Retirement Plan nor any other "pension plan" maintained by Twentieth
     Bancorp or the Bank has an "accumulated funding deficiency" (whether or not
     waived) within the meaning of Section  412 of the Code or Section  302 of
     ERISA.  Neither Twentieth Bancorp nor the Bank has provided, or is required
     to provide, security to any "pension plan" or to any "Single Employer Plan"
     pursuant to Section  401(a)(29) of the Code.  Under the Retirement Plan and
     any other "pension plan" maintained by Twentieth Bancorp or the Bank as of
     the last day of the most recent plan year ended prior to the date hereof,
     the actuarially determined present value of all "benefit liabilities,"
     within the meaning of Section  4001(a)(16) of ERISA (as determined on the
     basis of the actuarial assumptions contained in the plan's most recent
     actuarial valuation) did not exceed the then current value of the assets of
     such plan, and there has been no material change in the financial condition
     of any such plan since the last day of the most recent plan year.


                                   App. I-17
<PAGE>   107
          (v)     There are no restrictions on the rights of Twentieth Bancorp
     or the Bank to amend or terminate any Plan without incurring any liability
     thereunder.  Neither the execution and delivery of this Agreement nor the
     consummation of the transactions contemplated hereby will (except as
     otherwise specifically provided herein) (A) result in any payment to any
     person (including without limitation any severance compensation or payment,
     unemployment compensation, "golden parachute" or "change in control"
     payment, or otherwise) becoming due under any plan or agreement to any
     director, officer, employee or consultant, (B) increase any benefits
     otherwise payable under any plan or agreement, or (C) result in any
     acceleration of the time of payment or vesting of any such benefit.

Y.   INSURANCE.  Twentieth Bancorp and the Bank have in effect a "banker's
     blanket bond" and other policies of general liability, casualty, directors
     and officers liability, employee fidelity, errors and omissions and other
     property and liability insurance as listed in the Twentieth Bancorp
     Disclosure Statement (the "Policies") . The Policies provide coverage in
     such amounts and against such liabilities, casualties, losses or risks as
     is customary or reasonable for entities engaged in the businesses of
     Twentieth Bancorp or the Bank or as is required by applicable law or
     regulation; and, in the reasonable opinion of management of Twentieth
     Bancorp and the Bank, the insurance coverage provided under the Policies is
     considered reasonable and adequate in all respects for Twentieth Bancorp
     and the Bank.  Each of the Policies is in full force and effect and is
     valid and enforceable in accordance with its terms, and is underwritten by
     an insurer of recognized financial responsibility and which is qualified to
     transact business in West Virginia; and, Twentieth Bancorp and the Bank
     have taken all requisite actions (including the giving of required notices)
     under each such Policy in order to preserve all rights thereunder with
     respect to all matters.  Neither Twentieth Bancorp nor the Bank is in
     default under the provisions of, has received notice of cancellation or
     nonrenewal of or any premium increase on, or has any knowledge of any
     failure to pay any premium on or any inaccuracy in any application for any
     Policy.  There are no pending claims with respect to any Policy (and
     neither Twentieth Bancorp or the Bank is aware of any facts which would
     form the basis of any such claim), and neither Twentieth Bancorp or the
     Bank has knowledge of any facts or of the occurrence of any event that is
     reasonably likely to form the basis for any such claim.

Z.   INSURANCE OF DEPOSIT.  All deposits of the Bank are insured by the Bank
     Insurance Fund of the FDIC to the maximum extent permitted by law, all
     deposit insurance premiums due from the Bank to the FDIC have been paid in
     full in a timely fashion, and, to the best of the knowledge and belief of
     the Bank's executive officers, no proceedings have been commenced or are
     contemplated by the FDIC or otherwise to terminate such insurance.

AA.  SALARIES AND WAGES; STOCK OWNERSHIP; OPTIONS GRANTED.  The Twentieth
     Bancorp Disclosure Statement lists (i) the name and current salary or wage
     rate for each present employee of Twentieth Bancorp or the Bank who
     presently is scheduled to receive, or who is reasonably likely to receive,
     total compensation (including any bonus or incentive compensation) during
     or for 1995 or 1996 in an amount exceeding Twenty Five Thousand Dollars
     ($25,000.00); (ii) the name of and number of shares of Twentieth Bancorp
     Stock beneficially owned by each of the directors and principal officers of
     Twentieth Bancorp and the Bank and by any person or entity known to
     Twentieth Bancorp to beneficially own five


                                   App. I-18
<PAGE>   108
     percent (5%) or more of Twentieth Bancorp Stock; and (iii) the name of and
     number of outstanding options held by each person to whom a stock option
     has been granted and currently is outstanding under any stock option or
     other plan.

BB.  AFFILIATES.  The Twentieth Bancorp Disclosure Statement lists each of those
     persons deemed by Twentieth Bancorp and its counsel as of the date of this
     Agreement to be an "Affiliate" of Twentieth Bancorp as that term is defined
     in Rule 405 promulgated under the Securities Act of 1933, as amended (the
     "1933 Act").

CC.  OBSTACLES TO REGULATORY APPROVAL OR TAX TREATMENT.  To the best of the
     knowledge and belief of management of Twentieth Bancorp, there exists no
     fact or condition (including the Bank's record of compliance with the
     Community Reinvestment Act) relating to Twentieth Bancorp or the Bank that
     may reasonably be expected to (i) prevent or materially impede or delay
     Horizon Bancorp or Twentieth Bancorp from obtaining the regulatory
     approvals required in order to consummate transactions described herein,
     (ii) prevent the Merger from qualifying to be a tax-free reorganization
     under Section 368(a)(1)(A) of the Code; and, if any such fact or condition
     becomes known to Twentieth Bancorp or the Bank, Twentieth Bancorp shall
     promptly (and in any event within three (3) days after obtaining such
     knowledge) communicate such fact or condition to Horizon Bancorp or (iii)
     prevent accounting for the transaction as a pooling of interests.

DD.  DISCLOSURE.  To the best of the knowledge and belief of management of
     Twentieth Bancorp and the Bank, no written statement, certificate,
     schedule, list or other written information furnished by or on behalf of
     Twentieth Bancorp or the Bank at any time to Horizon Bancorp in connection
     with this Agreement (including without limitation the statements contained
     herein), when considered as a whole, contains or will contain any untrue
     statement of a material fact or omits or will omit to state a material fact
     necessary in order to make the statements herein or therein, in light of
     the circumstances under which they were made, not misleading.  Each
     document delivered or to be delivered by Twentieth Bancorp or the Bank to
     Horizon Bancorp is or will be a true and complete copy of such document,
     unmodified except by another document delivered thereby.

2.2.  REPRESENTATIONS AND WARRANTIES OF HORIZON BANCORP.  Except as
otherwise disclosed herein or disclosed to Twentieth Bancorp in writing in the
form of a document specifically designated as a "Disclosure Statement" (the
"Horizon Disclosure Statement") which will be delivered by Horizon Bancorp to
Twentieth Bancorp within ten (10) days of the execution of this Agreement,
Horizon Bancorp hereby represents and warrants to Twentieth Bancorp as follows:

A.   ORGANIZATION; STANDING; POWER.  Horizon Bancorp (i) is duly organized and
     incorporated, validly (existing and in good standing (as a business
     corporation) under the laws of West Virginia, (ii) has all requisite power
     and authority (corporate and other) to own its respective properties and
     conduct its business as now being conducted, (iii) is duly qualified to do
     business and is in good standing in each other jurisdiction in which the
     character of the properties owned or leased by it therein or in which the
     transaction of its business makes such qualification necessary except where
     failure so to qualify would not have a material adverse effect on Horizon
     Bancorp and its subsidiaries considered as one enterprise, and (iv) is not


                                   App. I-19
<PAGE>   109
     transacting business, or operating any properties owned or leased by it, in
     violation of any provision of federal or state law or any rule or
     regulation promulgated thereunder, which violation would have a material
     adverse effect on Horizon Bancorp and its subsidiaries considered as one
     enterprise.

B.   CAPITAL STOCK.  Horizon Bancorp's authorized capital stock consists of Five
     Million (5,000,000) shares of Horizon Bancorp Stock.  As of December 31,
     1995, an aggregate of Two Million Thirty Five Thousand Six Hundred Seventy
     (2,835,670) shares of Horizon Bancorp Stock had been issued and were
     outstanding, and 4,540 shares are held as treasury stock.  Horizon
     Bancorp's outstanding capital stock has been duly authorized and validly
     issued, and is fully paid and nonassessable, and the shares of Horizon
     Bancorp Stock issued to Twentieth Bancorp's shareholders pursuant to this
     Agreement, when issued as described herein, will be duly authorized,
     validly issued, fully paid and nonassessable.

C.   CONVERTIBLE SECURITIES, OPTIONS, ETC.  Except in connection with Horizon
     Bancorp's Incentive Stock Option Plan and its dividend reinvestment plan,
     Horizon Bancorp has no outstanding (i) securities or other obligations
     (including debentures or other debt instruments) which are convertible into
     shares of Horizon Bancorp Stock or any other securities of Horizon Bancorp,
     (ii) options, warrants, rights, calls or other commitments of any nature
     which entitle any person to receive or acquire any shares of Horizon
     Bancorp Stock or any other securities of Horizon Bancorp, or (iii) plan,
     agreement or other arrangement pursuant to which shares of Horizon Bancorp
     Stock or any other securities of Horizon Bancorp, or options, warrants,
     rights, calls or other commitments of any nature pertaining thereto, have
     been or may be issued.

D.   AUTHORIZATION AND VALIDITY OF AGREEMENT.  This Agreement has been duly and
     validly approved by Horizon Bancorp's Board of Directors and executed and
     delivered on Horizon Bancorp's behalf.  Subject only to approval of this
     Agreement by the shareholders of Horizon Bancorp in the manner required by
     law and required regulatory approval, (i) Horizon Bancorp has the corporate
     power and authority to execute and deliver this Agreement and to perform
     its obligations and agreements and carry out the transactions described
     herein, (ii) all corporate proceedings required to be taken to authorize
     Horizon Bancorp to enter into this Agreement and to perform its respective
     obligations and agreements and carry out the transactions described herein
     have been duly and properly taken, and (iii) this Agreement constitutes the
     valid and binding agreement of Horizon Bancorp enforceable in accordance
     with its terms (except to the extent enforceability may be limited by (A)
     applicable bankruptcy, insolvency, reorganization, moratorium or similar
     laws from time to time in effect which affect creditors' rights generally,
     (B) legal and equitable limitations on the availability of injunctive
     relief, specific performance and other equitable remedies, and (C) general
     principles of equity and applicable laws or court decisions limiting the
     enforceability of indemnification provisions).

E.   VALIDITY OF TRANSACTIONS; ABSENCE OF REQUIRED CONSENTS OR WAIVERS. Except
     where the same would not have a material adverse effect on Horizon Bancorp
     and its subsidiaries considered as one enterprise, neither the execution
     and delivery of this Agreement, nor the consummation of the transactions
     described herein, nor compliance by Horizon Bancorp with any of its
     obligations or agreements contained herein, will:


                                   App. I-20
<PAGE>   110

          (i)      conflict with or result in a breach of the terms and
     conditions of, or constitute a default or violation under any provision of,
     Horizon Bancorp's Certificate of Incorporation or Bylaws, or any contract,
     agreement, lease, mortgage, note, bond, indenture, license, or obligation
     or understanding (oral or written) to which Horizon Bancorp is bound or by
     which it, its business, capital stock or any of its respective properties
     or assets may be affected;

          (ii)     result in the creation or imposition of any lien, claim,
     interest, charge, restriction or encumbrance upon any of Horizon Bancorp's
     properties or assets;

          (iii)    violate any applicable federal or state statute, law, rule or
     regulation, or any order, writ, injunction or decree of any court,
     administrative or regulatory agency or governmental body;

          (iv)     result in the acceleration of any obligation or indebtedness
     of Horizon Bancorp; or,

          (v)      interfere with or otherwise adversely affect Horizon
     Bancorp's ability to carry on its business as presently conducted.

          No consents, approvals or waivers are required to be obtained from any
     person or entity in connection with Horizon Bancorp's execution and
     delivery of this Agreement, or the performance of its obligations or
     agreements or the consummation of the transactions described herein, except
     for required approvals of Horizon Bancorp's shareholders and of
     governmental or regulatory authorities.

F.   HORIZON BANCORP REPORTS.  Horizon Bancorp and its consolidated subsidiaries
     have timely filed all required Regulatory Reports.  All such reports and
     statements are collectively referred to herein as the "Horizon Bancorp
     Reports." As of their respective dates, the Horizon Bancorp Reports
     complied in all material respects with all the statutes, rules and
     regulations enforced or promulgated by the regulatory authority with which
     they were filed and did 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; and, Horizon Bancorp has not
     been notified that any such Horizon Bancorp Reports were deficient in any
     material respect as to form or content.  Following the date of this
     Agreement, Horizon Bancorp shall deliver to Twentieth Bancorp upon its
     request a copy of any report, registration, statement or other regulatory
     filing made by Horizon Bancorp or any of Horizon Bancorp's subsidiaries
     with the SEC, the FRB, the FDIC, the West Virginia Board or any other such
     regulatory authority.

G.   HORIZON BANCORP FINANCIAL STATEMENTS.  Horizon Bancorp has delivered to
     Twentieth Bancorp a copy of (i) Horizon Bancorp's consolidated balance
     sheets as of December 31, 1993 and December 31, 1994, and its consolidated
     statements of income, changes in shareholders' equity, and cash flows for
     the years ended December 31, 1992, December 31, 1993 and December 31, 1994
     (the "Horizon Bancorp Financial Statements"), and (ii) Horizon


                                   App. I-21
<PAGE>   111
     Bancorp's consolidated balance sheet as of September 30, 1995 and its
     consolidated statement of operations for the eleven (11) months ended
     November 30, 1995 (the "Horizon Bancorp Interim Financial Statements").
     The Horizon Bancorp Financial Statements and the Horizon Bancorp Interim
     Financial Statements were prepared in accordance with GAAP applied on a
     consistent basis throughout the periods indicated, the Horizon Bancorp
     Financial Statements have been audited and certified by Horizon Bancorp's
     independent accountants, Ernst & Young, L.L.P. and the Horizon Bancorp
     Financial Statements and the Horizon Bancorp Interim Financial Statements
     present fairly Horizon Bancorp's consolidated  financial position, results
     of operations, and cash flows as of the dates and for the periods specified
     therein.

H.   ABSENCE OF MATERIAL ADVERSE CHANGES. Since December 31, 1994, there has
     been no material adverse change, and there has occurred no event or
     development and there currently exists no condition or circumstance which,
     with the lapse of time or otherwise, may or could cause, create or result
     in a material adverse change, in or affecting Horizon Bancorp's
     consolidated financial condition or results of operations, or in its
     prospects, business, assets, loan portfolio, investments, properties or
     operations.

I.   ABSENCE OF BROKERAGE OR FINDERS COMMISSIONS.

          Except as set forth in Horizon Bancorp's Disclosure Statement no
     person or firm has been retained by or has acted on behalf of, pursuant to
     any agreement, arrangement or understanding with, or under the authority
     of, Horizon Bancorp or its Board of Directors, as a broker, finder or agent
     or has performed similar functions or otherwise is or may be entitled to
     receive or claim a brokerage fee or other commission in connection with the
     transactions described herein; and, Horizon Bancorp has not agreed to pay
     any brokerage fee or other commission to any person or entity in connection
     with the transactions described herein.

J.   OBSTACLES TO REGULATORY APPROVAL OR TAX TREATMENT. To the best of the
     knowledge and belief of the executive officers of Horizon Bancorp, no fact
     or condition (including the record of compliance with the Community
     Reinvestment Act by Horizon Bancorp subsidiaries) relating to Horizon
     Bancorp exists that may reasonably be expected to (i) prevent or materially
     impede or delay Horizon Bancorp or Twentieth Bancorp from obtaining the
     regulatory approvals required in order to consummate transactions described
     herein,  (ii) prevent the Merger from qualifying to be a tax-free
     reorganization under Section 368(a)(1)(A) of the Code; and, if any such
     fact or condition becomes known to the executive officers of Horizon
     Bancorp, Horizon Bancorp promptly (and in any event within three (3) days
     after obtaining such knowledge) shall communicate such fact or condition to
     Twentieth Bancorp or (iii) prevent accounting for the transaction as a
     pooling of interests.

K.   DISCLOSURE. To the best of the knowledge and belief of Horizon Bancorp, no
     written statement, certificate, schedule, list or written information
     furnished by or on behalf of Horizon Bancorp at any time to Twentieth
     Bancorp in connection with this Agreement (including without limitation the
     statements contained herein), when considered as a whole, contains or will
     contain any untrue statement of a material fact or omits or will omit to
     state a material fact necessary in order to make the statements herein or
     therein, in light of the


                                   App. I-22
<PAGE>   112
     circumstances under which they were made, not misleading. Each document
     delivered or to be delivered by Horizon Bancorp to Twentieth Bancorp is or
     will be a true and complete copy of such document, unmodified except by
     another document delivered by Horizon Bancorp.


                  ARTICLE III.  COVENANTS OF TWENTIETH BANCORP

3.1.  AFFIRMATIVE COVENANTS OF TWENTIETH BANCORP. Twentieth Bancorp hereby
covenants and agrees as follows with Horizon Bancorp:

A.   "AFFILIATES" OF TWENTIETH BANCORP.  Twentieth Bancorp will use its best
     efforts to cause each Affiliate listed in the Twentieth Bancorp Disclosure
     Statement (as well as each additional person who shall become an Affiliate
     of Twentieth Bancorp after the date of this Agreement or who shall be
     deemed by Horizon Bancorp or its counsel, in their sole discretion, to be
     an Affiliate of Twentieth Bancorp, and including persons, trusts, estates,
     corporations or other entities related to persons deemed to be Affiliates
     of Twentieth Bancorp) to execute and deliver to Horizon Bancorp prior to
     the Closing a written agreement (the "Affiliates' Agreement") relating to
     restrictions on shares of Horizon Bancorp Stock to be received by such
     Affiliates pursuant to this Agreement and which Affiliates' Agreement shall
     be in form and content reasonably satisfactory to Horizon Bancorp.
     Certificates for the shares of Horizon Bancorp Stock issued to Affiliates
     of Twentieth Bancorp shall bear a restrictive legend with respect to the
     restrictions applicable to such shares.

B.   CONDUCT OF BUSINESS PRIOR TO EFFECTIVE TIME.   While the parties recognize
     that the operation of Twentieth Bancorp until the Effective Time is the
     responsibility of Twentieth Bancorp and its Board of Directors and
     officers, Twentieth Bancorp agrees that, between the date of this Agreement
     and the Effective Time, Twentieth Bancorp will carry on its business, in
     and only in the regular and usual course in substantially, the same manner
     as such business heretofore was conducted, and, to the extent consistent
     with such business and within its ability to do so, Twentieth Bancorp
     agrees that it and, where applicable, the Bank will:

          (i)      preserve intact their present business organization, keep
     available their present officers, and preserve their relationships with
     customers, depositors, creditors, correspondents, suppliers, and others
     having business relationships with them;

          (ii)     maintain all of their properties and equipment in customary
     repair, order and condition, ordinary wear and tear excepted;

          (iii)    maintain their books of account and records in the usual,
     regular and ordinary manner in accordance with sound business practices
     applied on a consistent basis;

          (iv)     comply with all laws, rules and regulations applicable to
     them, their properties, assets or employees and to the conduct of their
     business;

          (v)      continue to maintain in force insurance; not modify any bonds
     or policies of insurance in effect as of the date hereof unless the same,
     as modified, provides substantially


                                   App. I-23
<PAGE>   113
     equivalent coverage; and, not cancel, allow to be terminated or, to the
     extent available, fail to renew, any such bond or policy of insurance
     unless the same is replaced with a bond or policy providing substantially
     equivalent coverage;

          (vi)     use their best efforts to modify their lending, personnel,
     and other operating policies and procedures prior to the Effective Time so
     as to be as consistent as practicable with those of Horizon Bancorp and its
     banking corporation subsidiaries; and, promptly provide to Horizon Bancorp
     such information about Twentieth Bancorp and the Bank and their financial
     condition, results of operations, prospects, businesses, assets, loan
     portfolio, investments, properties or operations, as Horizon Bancorp
     reasonably shall request.

C.   PERIODIC INFORMATION REGARDING LOANS.  All new extensions of credit by the
     Bank in excess of $250,000 and any further extensions of credit to existing
     borrowers that have not made timely payments in the past will be submitted
     to Horizon Bancorp on a before-the-fact basis for Horizon Bancorp's review
     but not approval within three (3) business days prior to the Bank's
     issuance of a commitment on such loan.

          Additionally, Twentieth Bancorp agrees to make available and provide
     to Horizon Bancorp the following information with respect to the Bank's
     loans and other extensions of credit (such assets herein referred to as
     "Loans") as of December 31, 1995, and as of the end of each month
     thereafter until the Effective Time, such information for each month to be
     in form and substance as is usual and customary in the conduct of the
     Bank's business and to be furnished within fifteen (15) days of the end of
     each month ending after the date hereof:

          (i)      a list of Loans past due for thirty (30) days or more as to
     principal or interest;

          (ii)     an analysis of the Loan Loss Reserve and management's
     assessment of the adequacy of the Loan Loss Reserve (to be furnished within
     fifteen (15) days of the end of each calendar quarter after the date hereof
     unless prepared on a more frequent basis), which analysis and assessment
     shall include a list of all classified or "watch list" Loans, along with
     the outstanding balance and amount specifically allocated to the Loan Loss
     Reserve for each such classified or "watch list" Loan;

          (iii)    a list of Loans in nonaccrual status;

          (iv)     a list of all Loans over Twenty-Five Thousand Dollars
     ($25,000.00) without principal reduction for a period of longer than one
     year;

          (v)      a list of all foreclosed real property or other real estate
     owned and all repossessed personal property;

          (vi)     a list of reworked or restructured Loans over Twenty-Five
     Thousand Dollars ($25,000.00) and still outstanding, including original
     terms, restructured terms and status; and

          (vii)    a list of all impaired loans as so classified under GAAP; and


                                   App. I-24
<PAGE>   114
          (viii)  a list of any actual or threatened litigation by or against
     the Bank pertaining to any Loans or credits, which list shall contain a
     description of circumstances surrounding such litigation, its present
     status and management's evaluation of such litigation.

D.   NOTICE OF CERTAIN CHANGES OR EVENTS.  Following the execution of this
     Agreement and up to the Effective Time, Twentieth Bancorp promptly will
     notify Horizon Bancorp in writing of and provide to it such information as
     it shall request regarding (i) any material adverse change in its
     consolidated financial condition, consolidated results of operations,
     prospects, business, assets, loan portfolio, investments, properties or
     operations, or of the actual or prospective occurrence of any condition or
     event which, with the lapse of time or otherwise, may or could cause,
     create or result in any such material adverse change, or of (ii) the actual
     or prospective existence or occurrence of any condition or event which,
     with the lapse of time or otherwise, has caused or may or could cause any
     statement, representation or warranty of Twentieth Bancorp herein to be or
     become inaccurate, misleading or incomplete, or which has resulted or may
     or could cause, create or result in the breach or violation of any of
     Twentieth Bancorp's covenants or agreements contained herein or in the
     failure of any of the conditions described in Paragraphs 6.1. or 6.3.
     below.

E.   CONSENTS TO ASSIGNMENT OF LEASES.  Twentieth Bancorp will use its best
     efforts to obtain all required consents of its lessors to the assignment to
     Horizon Bancorp of Twentieth Bancorp's rights and obligations under any
     personal property leases, each of which consents shall be in such form as
     shall be specified by Horizon Bancorp.

F.   FURTHER ACTION; INSTRUMENTS OF TRANSFER, ETC.  Twentieth Bancorp covenants
     and agrees with Horizon Bancorp that it (i) will use its best efforts in
     good faith to take or cause to be taken all action required of it or the
     Bank hereunder as promptly as practicable so as to permit the consummation
     of the transactions described herein at the earliest possible date, (ii)
     shall perform all acts and execute and deliver to Horizon Bancorp all
     documents or instruments required herein or as otherwise shall be
     reasonably necessary or useful to or requested of Twentieth Bancorp in
     consummating such transactions, and, (iii) will cooperate with Horizon
     Bancorp in every way in carrying out, and will pursue diligently the
     expeditious completion of, such transactions.

3.2.  NEGATIVE COVENANTS OF TWENTIETH BANCORP.  Twentieth Bancorp hereby
covenants and agrees that, between the date hereof and the Effective Time,
Twentieth Bancorp or, if applicable, the Bank, will not do any of the following
things or take any of the following actions without the prior written consent
and authorization of Horizon Bancorp:

A.   AMENDMENTS TO ARTICLES OF INCORPORATION, ETC.  Amend its Articles of
     Incorporation or Bylaws.

B.   CHANGE IN CAPITAL STOCK. (i) Make any change in its authorized capital
     stock, or create any other or additional authorized capital stock or other
     securities, or (ii) issue, sell, purchase, redeem, retire, reclassify,
     combine or split any shares of its capital stock or other securities
     (including securities convertible into capital stock), or enter into any
     agreement or understanding with respect to any such action.


                                   App. I-25
<PAGE>   115
C.   OPTIONS, WARRANTS AND RIGHTS. Grant or issue any options, warrants, calls,
     puts or other rights of any kind relating to the purchase, redemption or
     conversion of shares of its capital stock or any other securities
     (including securities convertible into capital stock) or enter into any
     agreement or understanding with respect to any such action.

D.   DIVIDENDS.  Declare or pay any dividends on outstanding shares of capital
     stock or make any other distributions on or in respect of any shares of its
     capital stock or otherwise to its shareholders except in the same manner
     and amounts no greater than were  paid in 1995.

E.   EMPLOYMENT, BENEFIT OR RETIREMENT AGREEMENTS OR PLANS.  Except as required
     by law (i) enter into or become bound by any oral or written contract,
     agreement or commitment for the employment or compensation of any director,
     officer, employee or consultant which is not immediately terminable by
     Twentieth Bancorp or the Bank without cost or other liability on no more
     than thirty (30) days' notice; (ii) adopt, enter into or become bound by
     any new or additional profit-sharing, bonus, incentive, change in control
     or "golden parachute," stock option, stock purchase, pension, retirement,
     insurance (hospitalization, life or other), paid leave (sick leave,
     vacation leave or other) or similar contract, agreement, commitment,
     understanding, plan or arrangement (whether formal or informal) with
     respect to or which provides for benefits for any of its current or former
     directors, officers, employees or consultants; or (iii) enter into or
     become bound by any contract with or commitment to any labor or trade union
     or association or any collective bargaining group.

F.   INCREASE IN COMPENSATION.  Increase the compensation or benefits of, or pay
     any bonus or other special or additional compensation to, any of its
     directors, officers, employees or consultants, other than standard,
     customary adjustments and merit increases which in the aggregate do not
     exceed $120,000 including 1995 officer bonuses.

G.   ACCOUNTING PRACTICES.  Make any changes in its accounting methods,
     practices or procedures or in depreciation or amortization policies,
     schedules or rates heretofore applied (except as required by GAAP or
     governmental regulations).

H.   ACQUISITIONS; ADDITIONAL BRANCH OFFICES.  Directly or indirectly (i)
     acquire or merge with, or acquire any branch or all or any significant part
     of the assets of, any other person or entity, (ii) open any new branch
     office, or (iii) enter into or become bound by any contract, agreement,
     commitment or letter of intent relating to, or otherwise take or agree to
     take any action in furtherance of, any such transaction or the opening of a
     new branch office.

I.   CHANGES IN BUSINESS PRACTICES.  Except as may be required by the FRB, the
     FDIC, the West Virginia Board or any other governmental or other regulatory
     agency or as shall be required by applicable law, regulation or this
     Agreement, (i) change in any material respect the nature of its business or
     the manner in which it conducts its business, (ii) discontinue any material
     portion or line of its business, or (iii) change in any material respect
     its lending, investment, asset-liability management or other material
     banking or business policies (except to the extent required by Paragraphs
     3.1.b. above).

J.   EXCLUSIVE MERGER AGREEMENT.  Directly or indirectly, through any 
     person (i) encourage,


                                   App. I-26
<PAGE>   116
     solicit or attempt to initiate or procure discussions, negotiations or
     offers with or from any person or entity (other than Horizon Bancorp)
     relating to a merger or other acquisition of Twentieth Bancorp or the
     purchase or acquisition of any Twentieth Bancorp Stock or any Bank Stock,
     any branch office of the Bank or all or any significant part of Twentieth
     Bancorp's or the Bank's assets; or provide assistance to any person in
     connection with any such offer; (ii) except to the extent required by law,
     disclose to any person or entity any information not customarily disclosed
     to the public concerning Twentieth Bancorp or the Bank or their respective
     business, or afford to any other person or entity access to its properties,
     facilities, books or records; (iii) sell or transfer any branch office of
     the Bank or all or any significant part of Twentieth Bancorp's or the
     Bank's assets to any other person or entity; or (iv) subject to its
     fiduciary duty to its shareholders enter into or become bound by any
     contract, agreement, commitment or letter of intent relating to, or
     otherwise take or agree to take any action in furtherance of, any such
     transaction.

K.   ACQUISITION OR DISPOSITION OF ASSETS.

          (i)      Sell or lease (as lessor), or enter into or become bound by
     any contract, agreement, option or commitment relating to the sale, lease
     (as lessor) or other disposition of any real estate; or sell or lease (as
     lessor), or enter into or become bound by any contract, agreement, option
     or commitment relating to the sale, lease (as lessor) or other disposition
     of any equipment or any other fixed or capital asset (other than real
     estate) having a book value or a fair market value, whichever is greater,
     of more than Ten Thousand Dollars ($10,000) for any individual item or
     asset, or more than Twenty Five Thousand Dollars ($25,000) in the aggregate
     for all such items or assets;

          (ii)     Purchase or lease (as lessee), or enter into or become bound
     by any contract, agreement, option or commitment relating to the purchase,
     lease (as lessee) or other acquisition of any real property; or purchase or
     lease (as lessee), or enter into or become bound by any contract,
     agreement, option or commitment relating to the purchase, lease (as lessee)
     or other acquisition of any equipment or any other fixed assets (other than
     real estate) having a purchase price, or involving aggregate lease
     payments, in excess of Fifty Thousand Dollars ($50,000) for any individual
     item or asset, or more than One Hundred Thousand Dollars ($100,000) in the
     aggregate for all such items or assets;

          (iii)    Enter into any purchase commitment for supplies or services
     which calls for prices of goods or fees for services materially higher than
     current market prices or fees or which obligates Twentieth Bancorp or the
     Bank for a period longer than twelve (12) months;

          (iv)     Sell, purchase or repurchase, or enter into or become bound
     by any contract, agreement, option or commitment to sell, purchase or
     repurchase, any loan or other receivable or any participation in any loan
     or other receivable; or

          (v)      Sell or dispose of, or enter into or become bound by any
     contract, agreement, option or commitment relating to the sale or other
     disposition of, any other asset (whether tangible or intangible, and
     including without limitation any trade name, trademark, copyright, service
     mark or intellectual property right or license); or assign its right to or
     otherwise give


                                   App. I-27
<PAGE>   117
     any other person its permission or consent to use or do business under
     corporate name of Twentieth Bancorp or the Bank or any name similar
     thereto; or release, transfer or waive any license or right granted to it
     by any other person to use any trademark, trade name, copyright, service
     mark or intellectual property right.

     Notwithstanding the foregoing, the Bank may foreclose, bid in or otherwise
     dispose of loan collateral (real or personal) according to its usual and
     customary practice.

L.   DEBT; LIABILITIES.  Except in the ordinary course of its business
     consistent with its past practices, (i) enter into or become bound by any
     promissory note, loan agreement or other agreement or arrangement
     pertaining to its borrowing of money, (ii) assume, guarantee, endorse or
     otherwise become responsible or liable for any obligation of any other
     person or entity, or (iii) incur any other liability or obligation
     (absolute or contingent).

M.   LIENS; ENCUMBRANCES.  Mortgage, pledge or subject any of its
     assets to, or permit any of its assets to become or (with the exception of
     those liens and encumbrances specifically described in the Twentieth
     Bancorp Disclosure Statement) remain subject to, any lien or any other
     encumbrance (other than in the ordinary course of business consistent with
     its past practices in connection with securing of public funds deposits,
     repurchase agreements or other similar operating matters).

N.   WAIVER OF RIGHTS. Waive, release or compromise any material rights in
     its favor (except in the ordinary course of business) except in good faith
     for fair value in money or money's worth, nor waive, release or compromise
     any rights against or with respect to any of its officers, directors or
     shareholders or members of families of officers, directors or shareholders.

O.   OTHER CONTRACTS. Enter into or become bound by any contracts,
     agreements, commitments or understandings (other than those described
     elsewhere in this Paragraph 3.2.) (i) for or with respect to any charitable
     contributions; (ii) with any governmental or regulatory agency or
     authority; (iii) pursuant to which Twentieth Bancorp or the Bank would
     assume, guarantee, endorse or otherwise become liable for the debt,
     liability or obligation of any other person or entity; (iv) which is
     entered into other than in the ordinary course of its business; or (v)
     which, in the case of any one contract, agreement, commitment or
     understanding and whether or not in the ordinary course of its business,
     would obligate or commit Twentieth Bancorp or the Bank to make expenditures
     of more than Ten Thousand Dollars ($10,000) (other than contracts,
     agreements, commitments or understandings entered into in the ordinary
     course of the Bank's lending operations).

                   ARTICLE IV.  COVENANTS OF HORIZON BANCORP

4.1. COVENANTS OF HORIZON BANCORP.  Horizon Bancorp hereby covenants and agrees
as follows with Twentieth Bancorp:

A.   NASDAQ NOTIFICATION OF LISTING OF ADDITIONAL SHARES OF HORIZON BANCORP
     STOCK.  As soon


                                   App. I-28
<PAGE>   118
     as possible after the Effective Time, Horizon Bancorp shall file with
     Nasdaq such notifications and other materials (and shall pay such fees) as
     shall be required for the Nasdaq listing of the shares of Horizon Bancorp
     Stock to be issued to Twentieth Bancorp's shareholders.

B.   EMPLOYMENT AGREEMENT.   Horizon Bancorp consents and agrees that
     the Bank may offer employment contracts to Bernard C. McGinnis, III, Thomas
     L. McGinnis, and Brian Shepherd.  Such employment contracts shall be for
     employment by the Bank at the individual's position, location and
     compensation as of January 1, 1996.  With respect to Bernard C. McGinnis,
     III and Thomas L. McGinnis, the term for the employment contracts offered
     shall be three (3) years, from the Effective Time and the term of the
     employment contract offered to Brian Shepherd shall be two (2) years from
     the Effective Time.  Such employment contracts shall be in substantially
     the form of Exhibit C attached hereto and incorporated herein by reference.

C.   EMPLOYEE BENEFITS.   After the Effective Time, Horizon Bancorp will
     review all employee benefits provided by the Bank.  If such benefits are
     found by Horizon Bancorp to be substantially different in scope and
     coverage than the benefits provided to employees of other subsidiaries of
     Horizon Bancorp, then Horizon Bancorp may recommend to the Bank's Board of
     Directors appropriate modifications to the Bank's employee benefits.  After
     the Effective Time, Horizon Bancorp shall cause the Bank to provide
     appropriate training and educational opportunities for all eligible
     employees of the Bank in order to provide them reasonable opportunity to
     assimilate with the operations of Horizon Bancorp.

D.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.  After the Effective Time,
     without releasing any insurance carrier and after exhaustion of all
     applicable director and liability insurance coverage for Twentieth Bancorp
     or the Bank and their respective directors and officers, Horizon Bancorp
     shall indemnify, hold harmless and defend the directors and officers of
     Twentieth Bancorp and the Bank in office at the Effective Time from and
     against any and all claims, disputes, demands, causes of action, suits,
     proceedings, losses, damages, liabilities, obligations, cost and expenses
     of every kind and nature including without limitation reasonable attorneys
     fees and legal costs and expenses therewith whether known or unknown and
     whether now existing or hereafter arising which may be threatened against,
     incurred, undertaken, received or paid by such persons in connection with
     or which arise out of or result from or are based upon any action or
     failure to act by such person in the ordinary scope of his duties as a
     director or officer of Twentieth Bancorp or the Bank through the Effective
     Time; provided, however, that Horizon Bancorp shall not be obligated to
     indemnify such person for (i) any act not available for statutory or
     permissible indemnification under West Virginia law, (ii) any act of
     self-dealing in violation of federal or state law, (iii) any act or
     omission which is ultimately determined to have constituted a breach of any
     implied or actual duty of fair dealing in connection with a lending
     obligation (such claims being commonly referred to as lender liability
     claims), any penalty, decree, order, finding or other action imposed or
     taken by any regulatory authority, (v) any violation or alleged violation
     of any federal or state law, rule, regulation, order, decree or policy
     applicable to banks and bank holding companies, (vi) any violation or
     alleged violation of federal or state securities laws, or (vii) any claim
     of sexual or other unlawful harassment, or any form of employment
     discrimination prohibited by federal or state law.


                                   App. I-29
<PAGE>   119
          The indemnification provided by this paragraph is the sole
     indemnification provided by Horizon Bancorp to the directors and officers
     of Twentieth Bancorp and the Bank for service in such positions up to and
     through the Effective Time.


                         ARTICLE V.  MUTUAL AGREEMENTS

5.1. SHAREHOLDERS MEETING; REGISTRATION STATEMENT; PROXY
     STATEMENT/PROSPECTUS.

A.   MEETING OF SHAREHOLDERS.  Twentieth Bancorp shall cause a special
     meeting of its shareholders (the "Shareholders Meeting") to be held as soon
     as reasonably possible (but in no event less than twenty (20) business days
     following the mailing to Twentieth Bancorp's shareholders of the "Proxy
     Statement/Prospectus" described below or, without Horizon Bancorp's
     approval, no later than June 30, 1996) for the purpose of Twentieth
     Bancorp's shareholders voting on the approval of the Merger and the
     ratification and adoption of this Agreement.  In connection with the call
     and conduct of and all other matters relating to the Shareholders Meetings
     (including the solicitation of proxies), Twentieth Bancorp shall fully
     comply with all provisions of applicable law and regulations and with
     Twentieth Bancorp's Articles of Incorporation and Bylaws.

     B.   PREPARATION AND DISTRIBUTION OF PROXY STATEMENT/PROSPECTUS.  Horizon
     Bancorp and Twentieth Bancorp jointly shall prepare a "Proxy
     Statement/Prospectus" for distribution to Twentieth Bancorp's shareholders
     as Twentieth Bancorp's proxy statement relating to Twentieth Bancorp's
     solicitation of proxies for use at the Shareholders Meeting and as Horizon
     Bancorp's prospectus relating to the offer and distribution of Horizon
     Bancorp Stock as described herein.  The Proxy Statement/Prospectus shall be
     in such form and shall contain or be accompanied by such information
     regarding the Shareholders Meeting, this Agreement, the parties hereto, the
     Merger and other transactions described herein as is required by applicable
     law and regulations and otherwise as shall be agreed upon by Horizon
     Bancorp and Twentieth Bancorp. Horizon Bancorp shall include the Proxy
     Statement/Prospectus as the prospectus in its "Registration Statement"
     described below; and, Horizon Bancorp and Twentieth Bancorp shall cooperate
     with each other in good faith and shall use their best efforts to cause the
     Proxy Statement/Prospectus to comply with any comments of the SEC thereon.

          Horizon Bancorp and Twentieth Bancorp will mail the Proxy Statement/
     Prospectus to Twentieth Bancorp's shareholders not less than twenty (20)
     business days prior to the scheduled date of the Shareholders Meeting;
     provided, however, that no such materials shall be mailed to Twentieth
     Bancorp's shareholders unless and until Horizon Bancorp shall have
     determined to its own satisfaction that the conditions specified in
     Paragraph 6.3.d. below have been satisfied and shall have approved such
     mailing.

C.   REGISTRATION STATEMENT AND "BLUE SKY" APPROVALS.  As soon as
     practicable following the execution of this Agreement, Horizon Bancorp
     shall prepare and file with the SEC a registration statement on Form S-4
     (or on such other form as Horizon Bancorp shall determine to be
     appropriate) (the "Registration Statement") covering the Horizon Bancorp


                                   App. I-30
<PAGE>   120
     Stock to be issued to shareholders of Twentieth Bancorp pursuant to this
     Agreement.  Additionally, Horizon Bancorp shall take all such other
     actions, if any, as shall be required by applicable state securities or
     "blue sky" laws (i) to cause the Horizon Bancorp Stock to be issued upon
     consummation of the Merger, and at the time of the issuance thereof, to be
     duly qualified or registered (unless exempt) under such laws, (ii) to cause
     all conditions to any exemptions from qualification or registration under
     such laws to have been satisfied, and (iii) to obtain any and all required
     approvals or consents to the issuance of such stock.

          Horizon Bancorp shall deliver to Twentieth Bancorp and its counsel a
     preliminary draft of the Registration Statement and the Proxy
     Statement/Prospectus not later than sixty (60) days after the date of this
     Agreement.

D.   RECOMMENDATION OF TWENTIETH BANCORP'S BOARD OF DIRECTORS AND VOTING OF
     SHARES.  Unless due to a material change in circumstances or for any other
     reason Twentieth Bancorp's Board of Directors reasonably believes that such
     a recommendation would violate the directors' duties or obligations as such
     to Twentieth Bancorp or to its shareholders, Twentieth Bancorp's Board of
     Directors shall recommend to and actively encourage Twentieth Bancorp's
     shareholders that they vote their shares of Twentieth Bancorp Stock at the
     Shareholders Meeting to ratify and approve this Agreement and the Merger,
     and the Proxy Statement/Prospectus  mailed to Twentieth Bancorp's
     shareholders will so indicate and state that Twentieth Bancorp's Board of
     Directors considers the Merger to be advisable and in the best interests of
     Twentieth Bancorp and its shareholders.  Each director of Twentieth Bancorp
     has agreed and represented to Twentieth Bancorp for the benefit of Horizon
     Bancorp that he or she intends to vote all shares of Twentieth Bancorp
     Stock owned by him or her in favor of the Merger. Horizon Bancorp
     represents that at the meeting at which this agreement was approved, the
     directors present voted unanimously to approve this agreement.

E.   INFORMATION FOR PROXY STATEMENT/PROSPECTUS AND REGISTRATION
     STATEMENT. Horizon Bancorp and Twentieth Bancorp each agrees to promptly
     and to use its best efforts to cause its directors, officers, accountants
     and affiliates to promptly respond, to requests by any other such party and
     its counsel for information for inclusion in the various applications for
     regulatory approvals and in the Proxy Statement/Prospectus.  Horizon
     Bancorp and Twentieth Bancorp each hereby covenants with the other that
     none of the information provided by it for inclusion in the Proxy
     Statement/Prospectus will, at the time of its mailing to Twentieth
     Bancorp's shareholders, contain any untrue statement of a material fact or
     omit any material fact required to be stated therein or necessary in order
     to make the statements contained therein, in light of the circumstances
     under which they were made, not misleading; and, at all times following
     such mailing up to and including the Effective Time, none of such
     information contained in the Proxy Statement/Prospectus, as it may be
     amended or supplemented, will contain any untrue statement of a material
     fact or omit any material fact required to be stated therein or necessary
     in order to make the statements contained therein, in light of the
     circumstances under which they were made, not misleading.

5.2. REGULATORY APPROVALS.  Within sixty (60) days after the date of this
Agreement, Horizon Bancorp and Twentieth Bancorp each shall prepare and file, or
cause to be prepared and filed, all applications for regulatory approvals and
actions as may be required of them, respectively, by


                                   App. I-31
<PAGE>   121
applicable law and regulations with respect to the transactions described
herein (including applications to the FRB and the West Virginia Board and to any
other applicable federal or state banking, or other regulatory authority).  Each
such party shall use their respective best efforts in good faith to obtain all
necessary regulatory approvals required for consummation of the transactions
described herein.  Each such party shall cooperate with each other party in the
preparation of all applications to regulatory authorities and, upon request,
promptly shall furnish all documents, information, financial statements or other
material that may be required by any other party to complete any such
application; and, before the filing therefor, each party to this Agreement shall
have the right to review and comment on the form and content of any such
application to be filed by any other party.  Should the appearance of any of the
officers, directors, employees or counsel of any of the parties hereto be
requested by any other party or by any governmental agency at any hearing in
connection with any such application, such party shall promptly use its best
efforts to arrange for such appearance.

5.3.  ACCESS.  Following the date of this Agreement and to and including
the Effective Time, Twentieth Bancorp shall provide Horizon Bancorp and its
employees, accountants, counsel or other representatives, access to all its
books, records, files and other information (whether maintained electronically
or otherwise), to all its properties and facilities, and to all its employees,
accountants, counsel and consultants as Horizon Bancorp shall, in its sole
discretion, consider to be necessary or appropriate; provided, however, that any
investigation or reviews conducted by Horizon Bancorp ("Due Diligence") shall be
performed in such a manner as will not interfere unreasonably with Twentieth
Bancorp's or the Bank's normal operations or with the Bank's relationship with
its customers or employees, and shall be conducted in accordance with procedures
established by the parties having due regard for the foregoing.  Horizon Bancorp
shall provide the Twentieth Bancorp and its representatives with such access to
Horizon Bancorp's records as may be necessary for an evaluation of the exchange
ratio as to fairness and other reasonable purposes.

5.4.  COSTS.  Subject to the provisions of Paragraph 7.3. below, and whether
or not this Agreement shall be terminated or the Merger shall be consummated,
Horizon Bancorp and Twentieth Bancorp each shall pay its own legal, accounting
and financial advisory fees and all its other costs and expenses incurred or to
be incurred in connection with the execution and performance of its obligations
under this Agreement or otherwise in connection with this Agreement and the
transactions described herein (including without limitation all accounting
fees, legal fees, printing costs, travel expenses, and, in the case of
Twentieth Bancorp, all fees owed its counsel, and the cost of Twentieth
Bancorp's "Fairness Opinion" described in Paragraph 6.1.d. below.  However,
subject to the provisions of Paragraph 7.3. below, all costs incurred in
connection with the printing and mailing of the Proxy Statement/Prospectus,
shall be deemed to be incurred and shall be paid fifty percent (50%) by
Twentieth Bancorp and fifty percent (50%) by Horizon Bancorp.

5.5.  ANNOUNCEMENTS.  Twentieth Bancorp and Horizon Bancorp each agrees that
no person other than the parties to this Agreement is authorized to make any
public announcements or statements about this Agreement or any of the
transactions described herein, and that, without the prior review and consent
of the others (which consent shall not unreasonably be denied or delayed), no
party hereto may make any public announcement, statement or disclosure as to
the terms and conditions of this Agreement or the transactions described
herein, except for such disclosures as may be required incidental to obtaining
the prior approval of any regulatory agency or official to the consummation of
the transactions described herein.  However, notwithstanding anything contained
herein to the


                                   App. I-32
<PAGE>   122
contrary, prior review and consent shall not be required if in the good faith
opinion of counsel to Horizon Bancorp any such disclosure by Horizon Bancorp is
required by law or otherwise is prudent.

5.6.  CONFIDENTIALITY.  Horizon Bancorp, Twentieth Bancorp and the
investment advisor for Twentieth Bancorp each agrees that it shall treat as
confidential and not disclose to any unauthorized person any documents or other
information obtained from or learned about the other during the course of the
negotiation of this Agreement and the carrying out of the events and
transactions described herein (including any information obtained during the
course of any due diligence investigation or review provided for herein or
otherwise) and which documents or other information relates in any way to the
business, operations, personnel, customers or financial condition of such other
party; and, that it will not use any such documents or other information for
any purpose except for the purposes for which such documents and information
were provided to it and in furtherance of the transactions described herein.
However, the above obligations of confidentiality shall not prohibit the
disclosure of any such document or information by any party to this Agreement
to the extent (i) such document or information is then available generally to
the public or is already known to the person or entity to whom disclosure is
proposed to be made (other than through the previous actions of such party in
violation of this Paragraph 5.6), (ii) such document or information was
available to the disclosing party on a nonconfidential basis prior to the same
being obtained pursuant to this Agreement, (iii) disclosure is required by
subpoena or order of a court or regulatory authority of competent jurisdiction,
or by the SEC or other regulatory authorities in connection with the
transactions described herein, or (iv) to the extent that, in the reasonable
opinion of legal counsel to such party, disclosure otherwise is required by
law.

     In the event this Agreement is terminated for any reason, then each of the
parties hereto immediately shall return to the other party all copies of any and
all documents or other written materials or information (including computer
generated and stored data) of or relating to such other party which were
obtained from them during the course of the negotiation of this Agreement and
the carrying out of the events and transactions described herein (whether during
the course of any due diligence investigation or review provided for herein or
otherwise) and which documents or other information relates in any way to the
business, operations, personnel, customers or financial condition of such other
party.

     The parties' obligations of confidentiality under this Paragraph 5.6. shall
survive and remain in effect following any termination of this Agreement.

5.7.  TAX-FREE REORGANIZATION AND POOLING OF INTERESTS.  Horizon Bancorp and
Twentieth Bancorp each undertakes and agrees to use its best efforts to cause
the Merger to qualify as a tax-free "reorganization" within the meaning of
Section 368(a)(1)(A) of the Code and as a  pooling of interests transaction and
that neither shall take or permit its representatives to take any action that
would cause the Merger to fail to so qualify as a tax-free reorganization and a
pooling of interests..

5.8.  TRANSITION TEAM.  Horizon Bancorp and Twentieth Bancorp shall create a
transition team comprised of management of Twentieth Bancorp and the Bank and
staff and representatives of Horizon Bancorp (the "Transition Team").  The
purpose of the Transition Team shall be to provide detailed guidance to Horizon
Bancorp in fulfilling and consummating the Merger.  The Transition Team shall
meet at least monthly beginning within thirty (30) days of the date of this
Agreement and


                                   App. I-33
<PAGE>   123
shall meet until the Effective Time.  Members of the Transition Team shall
receive no compensation for such service.

5.9  BOARD OF DIRECTORS OF THE BANK.  At the Effective Time, Horizon
Bancorp shall name two (2) individuals, in its sole discretion, to the Bank's
Board of Directors.

5.10  BOARD OF DIRECTORS OF HORIZON BANCORP.  At the Effective Time, Horizon
Bancorp shall appoint six (6) individuals selected by Twentieth Bancorp to its
board of directors and from those six (6), three (3) individuals shall be
appointed to the Horizon Bancorp executive committee.

5.11  SHAREHOLDER NOTIFICATION.  Twentieth Bancorp shall notify its
shareholders who are affiliates that Horizon Bancorp Stock cannot be traded or
sold by affiliates of Twentieth Bancorp for a period of thirty (30) days after
such time as consolidated accounting statements have been made publicly
available in accordance with ASR 135.


                  ARTICLE VI.  CONDITIONS PRECEDENT TO MERGER

6.1.  CONDITIONS TO ALL PARTIES' OBLIGATIONS.  Notwithstanding any other
provision of this Agreement to the contrary, the obligations of each of the
parties to this Agreement to consummate the transactions described herein shall
be conditioned upon the satisfaction of each of the following conditions
precedent on or prior to the Closing Date:

A.   APPROVAL BY GOVERNMENTAL REGULATORY AUTHORITIES; NO DISADVANTAGEOUS 
     CONDITIONS.

          (i)      The Merger and other transactions described herein shall have
     been approved, to the extent required by law, by the FRB and the West
     Virginia Board, and by all other governmental or regulatory agencies or
     authorities having jurisdiction over such transactions;

          (ii)     No governmental or regulatory agency or authority shall have
     withdrawn its approval of such transactions or imposed any condition on
     such transactions or conditioned its approval thereof, which condition is
     reasonably deemed by Horizon Bancorp to be materially disadvantageous or
     burdensome or to so adversely impact the economic or business benefits of
     this Agreement to Horizon Bancorp as to render it inadvisable for it to
     consummate the Merger;

          (iii)    The thirty (30) day waiting period required following
     necessary approvals by the FRB for review of the transactions described
     herein by the United States Department of Justice shall have expired, and,
     in connection with such review, no objection to the Merger shall have been
     raised; and

          (iv)     All other consents, approvals and permissions, and the
     satisfaction of all of the requirements prescribed by law or regulation,
     necessary to the carrying out of the transactions contemplated herein shall
     have been procured.

B.   ADVERSE PROCEEDINGS, INJUNCTION, ETC.  There shall not be (i)
     any order, decree or injunction of any court or agency of competent
     jurisdiction which enjoins or prohibits the Merger or any


                                   App. I-34
<PAGE>   124
     of the other transactions described herein or any of the parties hereto
     from consummating any such transaction, (ii) any pending or threatened
     investigation of the Merger or any of such other transactions by the United
     States Department of Justice, or any actual or threatened litigation under
     federal antitrust laws relating to the Merger or any other such
     transaction, (iii) any suit, action or proceeding by any person (including
     any governmental, administrative or regulatory agency), pending or
     threatened before any court or governmental agency in which it is sought to
     restrain or prohibit Twentieth Bancorp or Horizon Bancorp from consummating
     the Merger or carrying out any of the terms or provisions of this
     Agreement, or (iv) any other suit, claim, action or proceeding pending or
     threatened against Twentieth Bancorp or Horizon Bancorp or any of their
     respective officers or directors which shall  reasonably be considered by
     Twentieth Bancorp or Horizon Bancorp to be materially burdensome in
     relation to the proposed Merger or materially adverse in relation to the
     financial condition, results of operations, prospects, businesses, assets,
     loan portfolio, investments, properties or operations of either such
     corporation, and which has not been dismissed, terminated or resolved to
     the satisfaction of all parties hereto within ninety (90) days of the
     institution or threat thereof.

C.   APPROVAL BY BOARDS OF DIRECTORS AND SHAREHOLDERS. The shareholders of
     Horizon Bancorp and the shareholders of Twentieth Bancorp shall each have
     duly approved, ratified and confirmed this Agreement, all to the extent
     required by and in accordance with the provisions of this Agreement,
     applicable law, and applicable provisions of their respective Articles of
     Incorporation and Bylaws.

D.   FAIRNESS OPINION. Twentieth Bancorp shall have received from its financial
     advisor, Baxter Fentriss and Co., a written opinion (the "Fairness
     Opinion"), dated as of a date prior to the mailing of the Proxy
     Statement/Prospectus to Twentieth Bancorp's shareholders in connection with
     the Shareholders Meeting, to the effect that the terms of the Merger are
     fair, from a financial point of view, to Twentieth Bancorp and its
     shareholders.

E.   NO TERMINATION OR ABANDONMENT.  This Agreement shall not have been
     terminated or abandoned by any party hereto.

F.   DATE TO COMPLETE.  If the merger shall not have been completed by December
     31, 1996.

6.2. ADDITIONAL CONDITIONS TO TWENTIETH BANCORP'S OBLIGATIONS. Notwithstanding
any other provision of this Agreement to the contrary, Twentieth Bancorp's
separate obligation to consummate the transactions described herein shall be
conditioned upon the satisfaction of each of the following conditions precedent
on or prior to the Closing Date:

A.   MATERIAL ADVERSE CHANGE.  There shall not have been any material adverse
     change in the consolidated financial condition, results of operations,
     prospects, businesses, assets, loan portfolio, investments, properties or
     operations of Horizon Bancorp and its consolidated subsidiaries considered
     as one enterprise, and there shall not have occurred any event or
     development and there shall not exist any condition or circumstance which,
     with the of time or otherwise, may or could cause, create or result in any
     such material adverse change.


                                   App. I-35
<PAGE>   125
B.   COMPLIANCE WITH LAWS.  Horizon Bancorp shall have complied in all
     material respects with all federal and state laws and regulations
     applicable to the transactions described herein and where the violation of
     or failure to comply with any such law or regulation could or may have a
     material adverse effect on the consolidated financial condition, results of
     operations, prospects, businesses, assets, loan portfolio, investments,
     properties or operations of Horizon Bancorp and its consolidated
     subsidiaries considered as one enterprise.

C.   HORIZON BANCORP'S REPRESENTATIONS AND WARRANTIES AND PERFORMANCE OF
     AGREEMENTS; OFFICERS' CERTIFICATE.  Unless waived in writing by Twentieth
     Bancorp as provided in Paragraph 9.2. below, each of the representations
     and warranties of Horizon Bancorp contained in this Agreement as
     supplemented by Horizon Bancorp Disclosure Statement shall have been true
     and correct as of the date hereof and shall remain true and correct on and
     as of the Effective Time with the same force and effect as though made on
     and as of such date, except (i) for changes which are not, in the
     aggregate, material and adverse to the consolidated financial condition,
     results of operations, prospects, businesses, assets, loan portfolio,
     investments, properties or operations of Horizon Bancorp and its
     consolidated subsidiaries considered as one enterprise, and (ii) as
     otherwise contemplated by this Agreement; and Horizon Bancorp shall have
     performed in all material respects all of its obligations, covenants and
     agreements hereunder to be performed by it on or before the Closing Date.

          Twentieth Bancorp shall have received a certificate dated as of the
     Closing Date and executed by Horizon Bancorp to the foregoing effect and as
     to such other matters as may be reasonably requested by Twentieth Bancorp.

D.   LEGAL OPINION OF HORIZON BANCORP COUNSEL. Twentieth Bancorp shall have
     received from Robinson & McElwee, counsel for Horizon Bancorp, a written
     opinion dated as of the Closing Date and substantially in the form of
     Exhibit A attached hereto or otherwise in form and substance reasonably
     satisfactory to Twentieth Bancorp.

E.   OTHER DOCUMENTS AND INFORMATION FROM HORIZON BANCORP.  Horizon Bancorp
     shall have provided to Twentieth Bancorp correct and complete copies of its
     Bylaws, Certificate of Incorporation and board resolutions (all certified
     by its Secretary), together with certificates of the incumbency of its
     officers and such other closing documents and information as may be
     reasonably requested by Twentieth Bancorp or its counsel.

F.   CERTIFICATE OF MERGER; OTHER ACTIONS.  A Certificate of Merger in the form
     described in Paragraph 1.7. above shall have been duly executed and
     delivered by Horizon Bancorp as provided in that Paragraph.

G.   ACCEPTANCE BY TWENTIETH BANCORP'S COUNSEL. The form and substance of all
     legal matters described herein or related to the transactions contemplated
     herein shall be reasonably acceptable to Twentieth Bancorp's legal counsel.

H.   COMPLETION OF DUE DILIGENCE.  Twentieth Bancorp shall have completed its
     Due Diligence by no later than February 29, 1996 and be satisfied in its
     sole discretion with the results of that examination.


                                   App. I-36
<PAGE>   126

6.3. ADDITIONAL CONDITIONS TO HORIZON BANCORP'S OBLIGATIONS. Notwithstanding any
other provision of this Agreement to the contrary, Horizon Bancorp's obligations
to consummate the transactions described herein shall be conditioned upon the
satisfaction of each of the following conditions precedent on or prior to the
Closing Date:

A.   MATERIAL ADVERSE CHANGE.  There shall not have occurred any material
     adverse change in the consolidated financial condition, results of
     operations, prospects, businesses, assets, loan portfolio, investments,
     properties or operations of Twentieth Bancorp, and there shall not have
     occurred any event or development and there shall not exist any condition
     or circumstance which, with the lapse of time or otherwise, may or could
     cause, create or result in any such material adverse change.

B.   COMPLIANCE WITH LAWS.  Twentieth Bancorp shall have complied in all
     material respects with all federal and state laws and regulations
     applicable to the transactions described herein and where the violation of
     or failure to comply with any such law or regulation could or may have a
     material adverse effect on the consolidated financial condition, results of
     operations, prospects, business assets, loan portfolio, properties or
     operations of Horizon Bancorp or Twentieth Bancorp.

C.   TWENTIETH BANCORP'S REPRESENTATIONS AND WARRANTIES AND PERFORMANCE OF
     AGREEMENTS; OFFICERS' CERTIFICATE.  Unless waived in writing by Horizon
     Bancorp as provided in Paragraph 9.2. below, each of the representations
     and warranties of Twentieth Bancorp contained in this Agreement as
     supplemented by the Twentieth Bancorp Disclosure Statement shall have been
     true and correct as of the date hereof and shall remain true and correct on
     and as of the Effective Time with the same force and effect as though made
     on and as of such date, except (i) for changes which are not, in the
     aggregate, material and adverse to the consolidated financial condition,
     results of operations, prospects, businesses, assets, loan portfolio,
     investments, properties or operations of Twentieth Bancorp and the Bank
     considered as one enterprise, and (ii) as otherwise contemplated by this
     Agreement; and Twentieth Bancorp shall have performed in all material
     respects all its obligations, covenants and agreements hereunder to be
     performed by it on or before the Closing Date.

          Horizon Bancorp shall have received a certificate dated as of the
     Closing Date and executed by Twentieth Bancorp and its President and Chief
     Financial Officer to the foregoing effect and as to such other matters as
     may be reasonably requested by Horizon Bancorp.

D.   EFFECTIVENESS OF REGISTRATION STATEMENT; COMPLIANCE WITH SECURITIES AND
     OTHER "BLUE SKY" REQUIREMENTS. The Registration Statement shall be
     effective under the 1933 Act and no stop order suspending the effectiveness
     of the Registration Statement shall have been issued and no proceedings for
     that purpose shall have been initiated (or threatened by the SEC.  Horizon
     Bancorp shall have taken all such other actions of, if any, as it shall
     consider to be required by applicable state securities laws (i) to cause
     the Horizon Bancorp Stock to be issued upon consummation of the Merger and
     at the time of the issuance thereof, to be duly qualified or registered
     (unless exempt) under such laws, (ii) to cause all conditions to any


                                   App. I-37
<PAGE>   127
     exemptions from qualification or registration under such laws to have been
     satisfied, and (iii) to obtain any and all required approvals or consents
     with respect to the issuance of such stock, and any such required approvals
     or consents shall have been obtained and shall remain in effect.

E.   AGREEMENTS FROM TWENTIETH BANCORP AFFILIATES. Horizon Bancorp shall have
     received the written Affiliates' Agreements in form and content
     satisfactory to Horizon Bancorp and signed by all persons listed in the
     Twentieth Bancorp Disclosure Statement or who otherwise are deemed by
     Horizon Bancorp or its counsel to be Affiliates of Twentieth Bancorp.

F.   LEGAL OPINION OF BANK COUNSEL. Horizon Bancorp shall have received from
     Levy & Trautwein and Pancake, L.C., counsel to Twentieth Bancorp, a written
     opinion, dated as of the Closing Date and substantially in the form of
     Exhibit B attached hereto or otherwise in form and substance reasonably
     satisfactory to Horizon Bancorp.

G.   OTHER DOCUMENTS AND INFORMATION FROM TWENTIETH BANCORP.  Twentieth Bancorp
     shall have provided to Horizon Bancorp correct and complete copies of
     Twentieth Bancorp's Articles of Incorporation, Bylaws and board and
     shareholder resolutions (all certified by Twentieth Bancorp's Secretary),
     together with certificates of the incumbency of Twentieth Bancorp's
     officers and such other closing documents and information as may be
     reasonably requested by Horizon Bancorp or its counsel.

H.   CONSENTS TO ASSIGNMENT OF LEASES.  Twentieth Bancorp shall have obtained
     all required consents to the assignment to Horizon Bancorp of its rights
     and obligations under any personal property lease material to the business
     of Twentieth Bancorp, the Bank or the Subsidiary and any Real Property
     Lease, and such consents shall be in such form and substance as shall be
     satisfactory to Horizon Bancorp; and, each of the lessors of Twentieth
     Bancorp and the Bank shall have confirmed in writing that neither Twentieth
     Bancorp nor the Bank is in default under the terms and conditions of any
     personal property lease or any Real Property Lease.

I.   CERTIFICATE OF MERGER; OTHER ACTIONS.  A Certificate of Merger in the form
     described in Paragraph 1.7. above shall have been duly executed and
     delivered by Twentieth Bancorp as provided in that Paragraph.

J.   COMPLETION OF DUE DILIGENCE.  By no later than February 29, 1996, Horizon
     Bancorp shall have completed its Due Diligence and  shall be satisfied in
     its sole discretion with the results of that examination.

K.   DISSENTERS.  Neither Twentieth Bancorp's shareholders nor Horizon Bancorp's
     shareholders shall have exercised Dissenters' Rights in an amount that
     would prevent pooling of interests.

L.   ACCEPTANCE BY HORIZON BANCORP'S COUNSEL.  The form and substance of all
     legal matters described herein or related to the transactions contemplated
     herein shall be reasonably acceptable to Horizon Bancorp's legal counsel.


                                   App. I-38
<PAGE>   128
M.   FAIRNESS OPINION.  Horizon Bancorp shall have received a letter
     from the Robinson-Humphrey Company prior to mailing the proxy materials to
     Horizon Bancorp shareholders in form and substance satisfactory to Horizon
     Bancorp that the transaction is fair from a financial standpoint to the
     shareholders of Horizon Bancorp.

N.   ACCOUNTANTS' LETTERS.  Horizon Bancorp shall have received a letter in form
     and substance satisfactory to it before the Effective Time from the
     accountant for Twentieth Bancorp and for Horizon Bancorp that the
     transaction will qualify for pooling of interests treatment.


                  ARTICLE VII.  TERMINATION; BREACH; REMEDIES

7.1. MUTUAL TERMINATION.  At any time prior to the Effective Time (and
whether before or after approval hereof by the shareholders of Twentieth
Bancorp and/or approval by the shareholders of Horizon Bancorp), this Agreement
may be terminated by the mutual agreement of Horizon Bancorp and Twentieth
Bancorp.  Upon any such mutual termination, all obligations of Twentieth
Bancorp and Horizon Bancorp hereunder shall terminate and each party shall pay
costs and expenses as provided above.

7.2. UNILATERAL TERMINATION.  This Agreement may be terminated by either
Horizon Bancorp or Twentieth Bancorp (whether before or after approval hereof
by Twentieth Bancorp's shareholders and/or approval by the shareholders of
Horizon Bancorp) upon written notice to the other parties and under the
circumstances described below.

A.   TERMINATION BY HORIZON BANCORP.  This Agreement may be terminated by
     Horizon Bancorp by action of its Board of Directors or Executive Committee:

          (i)      if any of the conditions to the obligations of Horizon
     Bancorp shall not have been materially satisfied or effectively waived in
     writing by Horizon Bancorp (except to the extent that the failure of such
     condition to be satisfied has been caused by the failure of Horizon Bancorp
     to satisfy any of its obligations, covenants or agreements contained
     herein);

          (ii)     if Twentieth Bancorp shall have violated or failed to fully
     perform any of its obligations, covenants or agreements contained herein in
     any material respect;

          (iii)    if Horizon Bancorp determines at any time that any of
     Twentieth Bancorp's representations or warranties contained herein in any
     other certificate or writing delivered pursuant to this Agreement shall
     have been false or misleading in any material respect when made, or that
     there has occurred any event or development or that there exists any
     condition or circumstance which has caused or, with the lapse of time or
     otherwise, may or could cause any such representations or warranties to
     become false or misleading in any material respect;

          (iv)     if, notwithstanding Horizon Bancorp's satisfaction of its
     obligations under Paragraphs 5.l.b., 5.l.c. and 5.1.e.  above, Twentieth
     Bancorp's shareholders do not ratify and approve this Agreement and approve
     the Merger at the Shareholders Meeting; or


                                   App. I-39
<PAGE>   129
          (vi)    if Horizon Bancorp's shareholders do not ratify and approve
     this Agreement and approve the Merger at the Shareholders Meeting.

          However, before Horizon Bancorp may terminate this Agreement for any
     of the reasons specified above in (i), (ii) or (iii) of this paragraph, it
     shall give written notice to Twentieth Bancorp as provided herein stating
     its intent to terminate and a description of the specific breach, default,
     violation or other condition giving rise to its right to so terminate, and,
     such termination by Horizon Bancorp shall not become effective if, within
     thirty (30) days following the giving of such notice, Twentieth Bancorp
     shall cure such breach, default or violation or satisfy such condition to
     the reasonable satisfaction of Horizon Bancorp.  In the event Twentieth
     Bancorp cannot or does not cure such breach, default or violation or
     satisfy such condition to the reasonable satisfaction of Horizon Bancorp
     within such thirty (30) day period, Horizon Bancorp shall have thirty (30)
     days to notify Twentieth Bancorp of its intention to terminate this
     Agreement.  A failure to so notify Twentieth Bancorp will be deemed to be a
     waiver by Horizon Bancorp of the breach, default or violation pursuant to
     Paragraph 9.2. below.

B.   TERMINATION BY TWENTIETH BANCORP.  This Agreement may be terminated by
     Twentieth Bancorp:

          (i)      if any of the conditions of the obligations of Twentieth
     Bancorp shall not have been satisfied or effectively waived in writing by
     Twentieth Bancorp (except to the extent that the failure of such condition
     to be satisfied has been caused by the failure of Twentieth Bancorp to
     satisfy any of its obligations, covenants or agreements contained herein);

          (ii)     if Horizon Bancorp shall have violated or failed to fully
     perform any of its obligations, covenants or agreements contained herein in
     any material respect;

          (iii)    if Twentieth Bancorp determines that any of Horizon Bancorp's
     representations and warranties contained herein or in any other certificate
     or writing delivered pursuant to this Agreement shall have been false or
     misleading in any material respect when made, or that there has occurred
     any event or development or that there exists any condition or circumstance
     which has caused or, with the lapse of time or otherwise, may or could
     cause any such representations or warranties to become false or misleading
     in any material respect; or

          (iv)     if Twentieth Bancorp's shareholders do not ratify and approve
     this Agreement and approve the Merger at the Shareholders Meeting;

          However, before Twentieth Bancorp may terminate this Agreement for any
     of the reasons specified above in clause (i), (ii) or (iii) of this
     paragraph, it shall give written notice to Horizon Bancorp as provided
     herein stating its intent to terminate and a description of the specific
     breach, default, violation or other condition giving rise to its right to
     so terminate, and, such termination by Twentieth Bancorp shall not become
     effective if, within thirty (30) days following the giving of such notice,
     Horizon Bancorp shall cure such breach, default or violation or satisfy
     such condition to the reasonable satisfaction of Twentieth Bancorp.  In the


                                   App. I-40
<PAGE>   130
     event Horizon Bancorp cannot or does not cure such breach, default or
     violation or satisfy such condition to the reasonable satisfaction of
     Twentieth Bancorp within such thirty (30) day period, Twentieth Bancorp
     shall have thirty (30) days to notify Horizon Bancorp of its intention to
     terminate this Agreement. A failure to so notify Horizon Bancorp will be
     deemed to be a waiver by Twentieth Bancorp of the breach, default or
     violation pursuant to Paragraph 9.2. below.

C.   TERMINATION BY EITHER TWENTIETH BANCORP OR HORIZON BANCORP. If the average
     closing price for Horizon Bancorp common stock over the ten trading days
     prior to the Effective Date is more than $46, then the exchange ratio shall
     become $46.46 divided by the average closing price over the ten trading
     days.  In this event Twentieth's Board can accept the lower exchange rate
     at closing or terminate the Agreement. If the average closing price for
     Horizon Bancorp common stock over the ten trading days prior to the
     Effective Date is less than $34, then the exchange ratio shall become
     $34.34 divided by the average closing price over the ten trading days.  In
     this event Horizon's Board can terminate the Agreement at closing or permit
     the higher exchange ratio.  The party having the option to proceed at the
     modified ratio must by board action grant its consent to proceed no later
     than seventy two (72) hours after the last of the subject ten trading days.

7.3. BREACH; REMEDIES.  Except as otherwise provided below, in the event of
a material breach by Twentieth Bancorp of any of its representations or
warranties contained in this Agreement or in any other certificate or writing
delivered pursuant to this Agreement, or in the event of its failure to perform
or violation of any of its obligations, agreements or covenants contained in
Paragraph 3.1 or Paragraphs 5.1. through 5.9. of this Agreement, then Horizon
Bancorp's may, in addition to other remedies available to it under law or
equity terminate this Agreement prior to the Effective Time.  In the event of
any such termination of this Agreement by Horizon Bancorp, Twentieth Bancorp
shall be obligated to pay Horizon Bancorp the sum of Two Hundred Thousand
Dollars ($200,000).

     In the event of a breach by Horizon Bancorp of any of its representations
or warranties contained in this Agreement, or in the event of its failure to
perform or violation of any of its obligations, agreements or covenants
contained in this Agreement, then Twentieth Bancorp's sole right and remedy
shall be to terminate this Agreement prior to the Effective Time.  In the event
of any such termination of this Agreement by Twentieth Bancorp, then Horizon
Bancorp shall be obligated to reimburse Twentieth Bancorp for up to (but not
more than) One Hundred Thousand Dollars ($100,000.00) in out-of-pocket expenses
which actually have been incurred by Twentieth Bancorp.

     Notwithstanding anything contained herein to the contrary, if either party
to this Agreement breaches this Agreement by wilfully or intentionally failing
to perform or violating any of its obligations, agreements or covenants
contained in this Agreement, such party shall be obligated to pay all expenses
of the other party, together with other damages recoverable at law or in equity.


                         ARTICLE VIII.  INDEMNIFICATION

8.1. AGREEMENT TO INDEMNIFY.  Twentieth Bancorp and Horizon Bancorp hereby
agree that in the event this Agreement is terminated for any reason and the
Merger is not consummated, then they will indemnify each other as provided 
below.


                                   App. I-41
<PAGE>   131

A.   BY TWENTIETH BANCORP. Twentieth Bancorp shall indemnify, hold
     harmless and defend Horizon Bancorp from and against any and all claims,
     disputes, demands, causes of action, suits, proceedings, losses, damages,
     liabilities, obligations, costs and expenses of every kind and nature,
     including without limitation reasonable attorneys' fees and legal costs and
     expenses in connection therewith, whether known or unknown, and whether now
     existing or hereafter arising, which may be threatened against, incurred,
     undertaken, received or paid by Horizon Bancorp:

          (i)      in connection with or which arise out of or result from or
     are based upon (A) Twentieth Bancorp's operations or business transactions
     or its relationship with any of its employees, or (B) Twentieth Bancorp's
     failure to comply with any statute or regulation of any federal, state or
     local government or agency (or any political subdivision thereof) in
     connection with the transactions described in this Agreement;

          (ii)     in connection with or which arise out of or result from or
     are based upon any fact, condition or circumstance that constitutes a
     breach by Twentieth Bancorp of, or any inaccuracy, incompleteness or
     inadequacy in, any of its representations or warranties under or in
     connection with this Agreement, or any failure of Twentieth Bancorp to
     perform any of its covenants, agreements or obligations under or in
     connection with this Agreement;

          (iii)    in connection with or which arise out of or result from or
     are based upon any information provided by Twentieth Bancorp which is
     included in the Proxy Statement/Prospectus and which information causes the
     Proxy Statement/Prospectus at the time of its mailing to Twentieth
     Bancorp's shareholders and/or Horizon Bancorp's shareholders to contain any
     untrue statement of a material fact or to omit any material fact required
     to be stated therein or necessary in order to make the statements contained
     therein, in light of the circumstances under which they were made, not
     false or misleading; and,

          (iv)     in connection with or which arise out of or result from or
     are based upon the presence, use, production, generation, handling,
     transportation, treatment, storage, disposal, distribution, labeling,
     reporting, testing, processing, emission, discharge, release, threatened
     release, control, removal, clean-up or remediation on, from or relating to
     the Real Property by Twentieth Bancorp or any other person of any Hazardous
     Substances, or any action taken or any event or condition occurring or
     existing with respect to the Real Property which constitutes a violation of
     any Environmental Laws by Twentieth Bancorp or any other person.

B.   BY HORIZON BANCORP.  Horizon Bancorp shall indemnify, hold harmless and
     defend Twentieth Bancorp from and against any and all claims, disputes,
     demands, causes of action, suits, proceedings, losses, damages,
     liabilities, obligations, costs and expenses of every kind and nature,
     including without limitation reasonable attorneys' fees and legal costs and
     expenses in connection therewith, whether known or unknown, and whether now
     existing or hereafter arising, which may be threatened against, incurred,
     undertaken, received or paid by Twentieth Bancorp:


                                   App. I-42
<PAGE>   132
          (i)     in connection with or which arise out of or result from or are
     based upon (A) Horizon Bancorp's operations or business transactions or its
     relationship with any of its employees, or (B) Horizon Bancorp's failure to
     comply with any statute or regulation of any federal, state or local
     government or agency (or any political subdivision thereof) in connection
     with the transactions described in this Agreement;

          (ii)     in connection with or which arise out of or result from or
     are based upon of any fact, condition or circumstance that constitutes a
     breach by Horizon Bancorp of, or any inaccuracy, incompleteness or
     inadequacy in, any of its representations or warranties under or in
     connection with this Agreement, or any failure of Horizon Bancorp to
     perform any of its covenants, agreements or obligations under or in
     connection with this Agreement; and,

          (iii)    in connection with or which arise out of or result from or
     are based upon any information provided by it which is included in the
     Proxy Statement/Prospectus and which information causes the Proxy
     Statement/Prospectus at the time of its mailing to Twentieth Bancorp's
     shareholders and/or Horizon Bancorp's shareholders to contain any untrue
     statement of a material fact or to omit any material fact required to be
     stated therein or necessary in order to make the statements contained
     therein, in light of the circumstances under which they were made, not
     false or misleading.

8.2. PROCEDURE FOR CLAIMING INDEMNIFICATION.

A.   BY HORIZON BANCORP.  If any matter subject to indemnification
     hereunder arises in the form of a claim against Horizon Bancorp, its
     successors and assigns (collectively, "Indemnitee") (herein referred to as
     a "Third Party Claim"), the applicable Indemnitee promptly shall give
     notice and details thereof, including copies of all pleadings and pertinent
     documents, to Twentieth Bancorp.  Within fifteen (15) days of such notice,
     Twentieth Bancorp either (i) shall pay the Third Party Claim either in full
     or upon agreed compromise or (ii) shall notify the applicable Indemnitee
     and Horizon Bancorp that Twentieth Bancorp disputes the Third Party Claim
     and intends to defend against it, and thereafter shall so defend and pay
     any adverse final judgment or award in regard thereto.  Such defense shall
     be controlled by Twentieth Bancorp and the cost of such defense shall be
     borne by Twentieth Bancorp except that the applicable Indemnitee shall have
     the right to participate in such defense at its own expense and provided
     that Twentieth Bancorp shall have no right in connection with any such
     defense or the resolution of any such Third Party Claim to impose any cost,
     restriction, limitation or condition of any kind upon any of the parties
     comprising Indemnitee hereunder.  Horizon Bancorp agrees that it shall
     cooperate in all reasonable respects in the defense of any such Third Party
     Claim, including making personnel, books and records relevant to the Third
     Party Claim available to Twentieth Bancorp without charge therefor except
     for out-of-pocket expenses.  If Twentieth Bancorp fails to take action
     within fifteen (15) days as hereinabove provided or, having taken such
     action, thereafter fails diligently to defend and resolve the Third Party
     Claim, the parties comprising Indemnitee shall have the right to pay,
     compromise or defend the Third Party Claim and to assert the
     indemnification provisions hereof.  Each of the parties comprising
     Indemnitee also shall have the right, exercisable in good faith, to take
     such action as may be necessary to avoid a default prior to the assumption
     of the defense of the Third Party Claim by Twentieth Bancorp.


                                   App. I-43
<PAGE>   133
B.   BY  TWENTIETH BANCORP. If any matter subject to indemnification
     hereunder arises in the form of a claim against Twentieth Bancorp or its
     successors and assigns (herein referred to as a "Third Party Claim"),
     Twentieth Bancorp promptly shall give notice and details thereof, including
     copies of all pleadings and pertinent documents, to Horizon Bancorp.
     Within fifteen (15) days of such notice, Horizon Bancorp either (i) shall
     pay the Third Party Claim either in full or upon agreed compromise or (ii)
     shall notify Twentieth Bancorp that Horizon Bancorp disputes the Third
     Party Claim and intends to defend against it, and thereafter shall so
     defend and pay any adverse final judgment or award in regard thereto.  Such
     defense shall be controlled by Horizon Bancorp and the cost of such defense
     shall be borne by Horizon Bancorp except that Twentieth Bancorp shall have
     the right to participate in such defense at its own expense and provided
     that Horizon Bancorp shall have no right in connection with any such
     defense or the resolution of any such Third Party Claim to impose any cost,
     restriction, limitation or condition of any kind upon Twentieth Bancorp.
     Twentieth Bancorp agrees that it shall cooperate in all reasonable respects
     in the defense of any such Third Party Claim, including making personnel,
     books and records relevant to the Third Party Claim available to Horizon
     Bancorp without charge therefor except for out-of-pocket expenses.  If
     Horizon Bancorp fails to take action within fifteen (15) days as
     hereinabove provided or, having taken such action, thereafter fails
     diligently to defend and resolve the Third Party Claim, Twentieth Bancorp
     shall have the right to pay, compromise or defend the Third Party Claim and
     to assert the indemnification provisions hereof.  Twentieth Bancorp also
     shall have the right, exercisable in good faith, to take such action as may
     be necessary to avoid a default prior to the assumption of the defense of
     the Third Party Claim by Horizon Bancorp.


                     ARTICLE IX.  MISCELLANEOUS PROVISIONS

9.1. SURVIVAL OF REPRESENTATIONS, WARRANTIES, INDEMNIFICATION AND OTHER 
AGREEMENTS.

A.   REPRESENTATIONS, WARRANTIES AND OTHER AGREEMENTS.  None of
     the representations, warranties or agreements herein shall survive the
     effectiveness of the Merger, and no party shall have any right after the
     Effective Time to recover damages or any other relief from any other party
     to this Agreement by reason of any breach of representation or warranty,
     any nonfulfillment or nonperformance of any agreement contained herein, or
     otherwise; provided, however, that the parties' agreements contained  with
     regard to appointment of directors and Horizon Bancorp's representation and
     warranty with regard to its issuance of fully  paid and nonassessable stock
     shall survive the effectiveness of the Merger.

B.   INDEMNIFICATION.  The parties' indemnification agreements and
     obligations contained herein shall become effective only in the event this
     Agreement is terminated, and neither of the parties shall have any
     obligations under Paragraph 8.1. in the event of or following consummation
     of the Merger.

9.2. WAIVER.  Any term or condition of this Agreement may be waived (except
as to matters of regulatory approvals and approvals required by law), either in
whole or in part, at any time by the party which is, and whose shareholders
are, entitled to the benefits thereof; provided, however, that


                                   App. I-44
<PAGE>   134
any such waiver shall be effective only upon a determination by the waiving
party (through action of its Board of Directors) that such waiver would not
adversely affect the interests of the waiving party or its shareholders; and,
provided further, that no waiver of any term or condition of this Agreement by
any party shall be effective unless such waiver is in writing and signed by the
waiving party or as provided in Paragraphs 7.2.a. and 7.2.b. above, or be
construed to be a waiver of any succeeding breach of the same term or condition.
No failure or delay of any party to exercise any power, or to insist upon a
strict compliance by any other party of any obligation, and no custom or
practice at variance with any terms hereof, shall constitute a waiver of the
right of any party to demand full and complete compliance with such terms.

9.3. AMENDMENT.  This Agreement may be amended, modified or supplemented at
any time or from time to time prior to the Effective Time, and either before or
after its approval by the shareholders of Twentieth Bancorp, by an agreement in
writing approved by a majority of the Boards of Directors of Horizon Bancorp
and Twentieth Bancorp executed in the same manner as this Agreement; provided
however, that, except with the further approval of Twentieth Bancorp's
shareholders of that change or as otherwise provided herein, following approval
of this Agreement by Twentieth Bancorp's shareholders no change may be made in
the Cash Factor.(1)

9.4. NOTICES.  All notices and other communications hereunder shall be in
writing and shall be deemed to have been duly given if delivered personally or
by courier, or mailed by certified mail, return receipt requested, postage
prepaid, and addressed as follows:

     If to Twentieth Bancorp, to:
                                        Mr. B. C. McGinnis, III
                                        President/CEO
                                        The Twentieth Street Bank
                                        190 Third Avenue
                                        Box 5527
                                        Huntington, West Virginia  25703

     With a copy to:
                                        Robert M. Levy, Esquire
                                        Levy, Trautwein and Pancake, L.C.
                                        Suite 200, Morris Building
                                        845 Fourth Avenue
                                        Huntington, West Virginia  25701

     If to Horizon Bancorp, to:
                                        Horizon Bancorp, Inc.
                                        Attn: Mr. Frank S. Harkins, Jr.
                                        Chairman
                                        1 Park Avenue
                                        Box D
                                        Beckley, West Virginia  25802-2803


(1) Parties have agreed that the phrase "Cash Factor" is a typographical error 
    in the original agreement and should read "Exchange Ratio".



                                   App. I-45
<PAGE>   135
                                        Mr. Philip McLaughlin
                                        President/CEO
                                        Horizon Bancorp, Inc.
                                        109 S. Jefferson Street
                                        Box 387
                                        Lewisburg, West Virginia  24901

         With copy to:
                                        Edward M. Payne, III, Esquire
                                        File, Payne, Scherer & File
                                        Law Building
                                        130 Main Street
                                        Beckley, West Virginia  25801

                                        David K. Higgins, Esquire
                                        Robinson & McElwee
                                        Post Office Box 1791
                                        Charleston, West Virginia  25326

9.5.  FURTHER ASSURANCE.  Twentieth Bancorp and Horizon Bancorp each agree
to furnish to the other such further assurances with respect to the matters
contemplated herein and their respective agreements, covenants, representations
and warranties contained herein, including the opinion of legal counsel, as
such other party may reasonably request.

9.6.  HEADINGS AND CAPTIONS.  Headings and captions of the sections and
paragraphs of this Agreement have been inserted for convenience of reference
only and do not constitute a part hereof.

9.7.  ENTIRE AGREEMENT.  This Agreement (including all schedules and
exhibits attached hereto and all documents incorporated herein by reference)
contains the entire agreement of the parties with respect to the transactions
described herein and supersedes any and all other oral or written agreements)
heretofore made, and there are no representations or inducements by or to, or
any agreements between, any of the parties hereto other than those contained
herein in writing.

9.8.  SEVERABILITY OF PROVISIONS.  The invalidity or unenforceability of any
term, phrase, clause, paragraph, restriction, covenant, agreement or other
provision hereof shall in no way affect the validity or enforceability of any
other provision or part hereof.

9.9.  ASSIGNMENT.  This Agreement may not be assigned by any party hereto
except with the prior written consent of the other parties hereto.

9.10. COUNTERPARTS.  Any number of counterparts of this Agreement may be
signed and delivered, each of which shall be considered an original and which
together shall constitute one agreement.

9.11. GOVERNING LAW.  This Agreement is made in and shall be construed and
enforced in accordance with the laws of West Virginia.

9.12. INSPECTION.  Any right of Horizon Bancorp hereunder to investigate or
inspect the assets,


                                   App. I-46
<PAGE>   136
books, records, files and other information of Twentieth Bancorp in no way
shall establish any presumption that Horizon Bancorp should have conducted any
investigation or that such right has been exercised by Horizon Bancorp, its
agents, representatives or others.  Any investigations or inspections that have
been made by Horizon Bancorp by its agents, representatives or others prior to
the Closing Date shall not be deemed in any way in derogation or limitation of
the covenants, representations and warranties made by or on behalf of Twentieth
Bancorp in this Agreement.


                     [THIS SPACE LEFT BLANK INTENTIONALLY]


                                   App. I-47
<PAGE>   137
         IN WITNESS WHEREOF, Twentieth Bancorp and Horizon Bancorp each has
caused this Agreement to be executed in its name by its duly authorized
officers and its corporate seal to be affixed hereto as of the date first above
written.


                                         TWENTIETH BANCORP, INC.

                                  By:   /s/ B. C. McGinnis, III       
                                     ----------------------------
                                               President

[CORPORATE SEAL]
                                        /s/ Brian A. Shepherd        
                                     ---------------------------- 
                                               Secretary


                                        HORIZON BANCORP, INC.

                                  By:  /s/ Frank S. Harkins, Jr.     
                                     ---------------------------- 
                                               Chairman

                                  and


                                  By:  /s/ Philip McLaughlin        
                                     ---------------------------- 
                                               President/CEO
   
[CORPORATE SEAL]
                                       /s/ Edward. Payne III           
                                     ---------------------------- 
                                               Secretary


                                   App. I-48
<PAGE>   138
                                  EXHIBIT  A

           FORM OF LEGAL OPINION OF COUNSEL FOR HORIZON BANCORP, INC.


                                                        ________________, 199___
Twentieth Bancorp, Inc.
______________________

______________________

Gentlemen and Ladies: 

     We have acted as counsel to Horizon Bancorp, Inc. ("Horizon Bancorp") in
connection with the Plan of Merger and Reorganization (the "Agreement") dated
________________, 199___, by and between Twentieth Bancorp, Inc. ("Twentieth
Bancorp") and Horizon Bancorp whereunder Twentieth Bancorp will be merged into
Horizon Bancorp (the "Merger").  As such counsel, we have reviewed such
organizational documents, indentures, contracts, deeds, instruments, minutes,
actions of the Board of Directors and shareholders of Horizon Bancorp and such
other documents as we have deemed necessary as a basis for the opinions
expressed herein, which are being delivered to you pursuant to the Agreement.
Capitalized terms appearing herein and not otherwise defined are used as defined
in the Agreement.

     In reviewing the documents referred to above, we have assumed without
inquiry the genuineness of all signatures, and the conformity with originals of
all documents submitted to us as copies.  We have assumed that Twentieth
Bancorp, has and had the power to enter into and to perform the Merger, and all
other instruments in which its joinder is contemplated in connection with the
Agreement.  We have also assumed Twentieth Bancorp's due authorization,
execution and delivery of the Agreement and other instruments described therein
and the validity, binding effect and enforceability thereof with respect to
Twentieth Bancorp in accordance with their respective terms.  We have relied as
to certain factual matters on representations of Horizon Bancorp contained in
the Agreement, on certificates of officers of Horizon Bancorp and certain public
officials or agencies.

     Whenever we state our opinion to be to our knowledge, we mean that our
attorneys who have given substantive legal attention to representation of
Horizon Bancorp in the transaction have not made any investigation to acquire
actual knowledge of the existence or absence of the facts forming the basis for
such opinion, but are without information generally which contradicts the
existence or absence of the facts forming the basis for such opinion.

     Based upon and subject to the foregoing and the qualifications set forth
below, it is our opinion that, except as disclosed in the Registration
Statement, the Agreement or the Disclosure Statement given by Horizon Bancorp in
connection therewith:


                                   App. I-49
<PAGE>   139

1.   Horizon Bancorp (i) is duly organized and incorporated, validly
     existing and in good standing (as a business corporation) under the laws of
     West Virginia, (ii) has all requisite power and authority (corporate and
     other) to own its respective properties and conduct its respective
     businesses as now being conducted, (iii) is duly qualified to do business
     and is in good standing in West Virginia and, to our knowledge, in each
     other jurisdiction in which the character of the properties owned or leased
     by it therein or in which the transaction of its respective businesses
     makes such qualification necessary, except where failure so to qualify
     would not have a material adverse effect on Horizon Bancorp and its
     subsidiaries considered as one enterprise, and (iv) to our knowledge, is
     not transacting business, or operating any properties owned or leased by
     it, in violation of any provision of federal or state law or any rule or
     regulation promulgated thereunder, which violation would have a material
     adverse effect on Horizon Bancorp and its subsidiaries considered as one
     enterprise.

2.   Horizon Bancorp' authorized capital stock consists of Five Million
     (5,000,000) shares of One Dollar ($1.00) par value per share common stock
     ("Horizon Bancorp Stock"). The shares of Horizon Bancorp Stock to be issued
     to Twentieth Bancorp's shareholders pursuant to the Agreement, when issued
     as described therein, will be duly authorized, validly issued, fully paid
     and nonassessable.

3.   (i) Horizon Bancorp has the corporate power and authority to execute
     and deliver the Agreement and to perform its obligations and agreements and
     carry out the transactions described therein, (ii) all corporate
     proceedings required to be taken to authorize Horizon Bancorp to enter into
     the Agreement and to perform its obligations and agreements and carry out
     the transactions described therein have been duly and properly taken, and
     (iii) the Agreement constitutes the valid and binding agreement of Horizon
     Bancorp enforceable in accordance with its terms (except to the extent
     enforceability may be limited by (A) applicable bankruptcy, insolvency,
     reorganization, moratorium or similar laws from time to time in effect
     which affect creditors' rights generally, (B) legal and equitable
     limitations on the availability of injunctive relief, specific performance
     and other equitable remedies, (C) general principles of equity governing
     and limiting the availability of specific performance, injunctive relief
     and other equitable remedies and (D) applicable laws and regulations and
     the application of principles of public policy underlying such laws and
     regulations limiting the enforceability of indemnification provisions).

4.   Except where the same would not have a material adverse effect on
     Horizon Bancorp and its subsidiaries considered as one enterprise, neither
     the execution and delivery of the Agreement, nor the consummation of the
     transactions described therein, nor compliance by Horizon Bancorp with any
     of its obligations or agreements contained therein, will:

     (i)  conflict with or result in a breach of the terms and conditions of,
          or constitute a default or violation under any provision of, Horizon
          Bancorp' Certificate of Incorporation or Bylaws, or, to our knowledge,
          any contract, agreement, lease, mortgage, note, bond, indenture,
          license, or obligation or understanding (oral or written) to which
          Horizon Bancorp is bound or by which it, its business, capital stock
          or any of its properties or assets may be affected;


                                   App. I-50
<PAGE>   140

     (ii)    to our knowledge, result in the creation or imposition of any lien,
             claim, interest, charge, restriction or encumbrance upon any of
             Horizon Bancorp' properties or assets;

     (iii)   to our knowledge, violate any applicable federal or state statute,
             law, rule or regulation, or, to our knowledge, any order, writ,
             injunction or decree of any court, administrative or regulatory
             agency or governmental body; or

     (iv)    to our knowledge, result in the acceleration of any obligation or
             indebtedness of Horizon Bancorp.

5.   No consents, approvals or waivers are required to be obtained from
     any person or entity in connection with Horizon Bancorp's execution and
     delivery of the Agreement, or, to our knowledge, the performance of their
     respective obligations or agreements or the consummation of the
     transactions described therein, except for required approvals of
     governmental or regulatory authorities and shareholders which have been
     obtained.

     We have participated in conferences with representatives of Horizon Bancorp
and their and your respective accountants and counsel in connection with the
preparation of the Registration Statement and the Proxy Statement and have
considered the matters required to be stated therein and the statements
contained therein and, based on the foregoing (and, in certain circumstances
relying as to materiality on the opinions of officers and representatives of
Horizon Bancorp) nothing has come to our attention which would lead us to
believe that the Registration Statement at the time it became effective, or the
Proxy Statement, at the time it was distributed to Twentieth Bancorp's
shareholders, contained any untrue statement of a material fact or omitted to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading (except that we express no opinion regarding
any information contained in the Registration Statement regarding the Bank, or
as to any financial statements or other financial and statistical data included
therein).

     We are licensed to practice in the State of West Virginia, and our opinions
are not intended to, and do not, cover the laws of any other state. To the
extent that matters as to which we have opined may be governed by the laws of
any other state, our opinions are given as if such matters were governed by the
laws of the State of West Virginia.  Our opinion is based upon reported
decisions of the West Virginia Supreme Court of Appeals as of the date hereof.

     The opinions rendered herein are solely for your benefit and are not to be
used, circulated or otherwise referred to without our prior written consent.

                                        Very truly yours,


                                   App. I-51
<PAGE>   141
                                   EXHIBIT  B

             FORM OF LEGAL OPINION OF COUNSEL FOR TWENTIETH BANCORP


                                                       _________________, 199___
Horizon Bancorp, Inc.
____________________

____________________


Gentlemen and Ladies:

     We have acted as counsel to the Twentieth Bancorp, Inc. ("Twentieth
Bancorp") and Twentieth Street Bank (the "Bank"), a West Virginia banking
corporation, in connection with the Plan of Merger and Reorganization dated
_________________, 199___, (the "Agreement") by and between Twentieth Bancorp,
Inc. and Horizon Bancorp, Inc. ("Horizon Bancorp").  As such counsel, we have
reviewed such organizational documents, indentures, contracts, deeds,
instruments, minutes actions of the Boards of Directors and shareholders of
Twentieth Bancorp and the Bank, and such other documents as we have deemed
necessary as a basis for the opinions expressed herein, which are being
delivered to you pursuant to the Agreement.  Capitalized terms appearing herein
and not otherwise defined are used as defined in the Agreement.

     In reviewing the documents and information referred to above, we have
assumed without inquiry the genuineness of all signatures, and the conformity
with originals of all documents submitted to us as copies.  We have assumed that
Horizon Bancorp has and had the power to enter into and to perform the
Agreement, and all other instruments in which their joinder is contemplated in
connection with the Agreement.  We have also assumed Horizon Bancorp's due
authorization, execution and delivery of the Agreement and other instruments
described therein and the validity, binding effect and enforceability thereof
with respect to Horizon Bancorp in accordance with their respective terms.  We
have relied as to certain factual matters on representations of Twentieth
Bancorp contained in the Agreement, on certificates of officers of Twentieth
Bancorp and certain public officials or agencies.

     Whenever we state our opinion to be to our knowledge, we mean that our
attorneys who have given substantive legal attention to representation of
Twentieth Bancorp and the Bank in the transaction have not made any
investigation to acquire actual knowledge of the existence or absence of the
facts forming the basis for such opinion, but are without information generally
which contradicts the existence or absence of the facts forming the basis for
such opinion.

     Based upon and subject to the foregoing and the qualifications set forth
below, it is our opinion that, except as disclosed in the Registration
Statement, the Agreement or  the Disclosure Statement given by Twentieth Bancorp
in connection therewith:


                                   App. I-52
<PAGE>   142
1.   Twentieth Bancorp and the Bank each (i) is duly organized and
     incorporated, validly existing and in good standing (as a business
     corporation and a banking corporation, respectively) under the laws of West
     Virginia; (ii) has all requisite power and authority (corporate and other)
     to own, lease and operate its properties and to carry on its business as
     now being conducted; (iii) is duly qualified to do business and is in good
     standing in West Virginia, and, to our knowledge, in each other
     jurisdiction in which the character of the properties owned, leased or
     operated by it therein or in which the transaction of its business makes
     such qualification necessary, except where failure so to qualify would not
     have a material adverse effect on Twentieth Bancorp or the Bank; and, (iv)
     to our knowledge, is not transacting business or operating any properties
     owned or leased by it in violation of any provision of federal or state law
     or any rule or regulation promulgated thereunder, which violation would
     have a material adverse effect on Twentieth Bancorp or the Bank.

2.   Twentieth Bancorp's authorized capital stock consists of
     ___________________ (          ) shares of common stock,
     ___________________ ($ ) par value per share ("Twentieth Bancorp Stock"),
     of which _________________ ( ) shares are issued and outstanding and
     constitute Twentieth Bancorp's only outstanding securities.

          Each outstanding share of Twentieth Bancorp Stock (i) has been duly
     authorized and are validly issued and outstanding, and is fully paid and
     nonassessable, (ii) has not been issued in violation of the preemptive
     rights of any shareholder, and (iii) is exempt from the registration and
     reporting requirements of the Securities Exchange Act of 1934, as amended
     (the "1934 Act").

3.   The Bank does not have any subsidiary (direct or indirect).

4.   Neither Twentieth Bancorp nor the Bank has any outstanding
     (i) securities or other obligations (including debentures or other debt
     instruments) which are convertible into shares of Twentieth Bancorp Stock
     or any other securities of Twentieth Bancorp, (ii) options, warrants,
     rights, calls or other commitments of any nature which entitle any person
     to receive or acquire any shares of Twentieth Bancorp Stock or any other
     securities of Twentieth Bancorp, or (iii) plan, agreement or other
     arrangement pursuant to which shares of Twentieth Bancorp Stock or any
     other securities of Twentieth Bancorp, or options, warrants, rights, calls
     or other commitments of any nature pertaining thereto, have been or may be
     issued.

5.   The Agreement has been duly and validly approved by Twentieth Bancorp's
     Board of Directors and shareholders to the extent and in the manner
     required by applicable law, and has been executed and delivered on
     Twentieth Bancorp's behalf,

     (i)    Twentieth Bancorp has the corporate power and authority to execute
            and deliver the Agreement and to perform its obligations and
            agreements and carry out the transactions described therein,

     (ii)   all corporate proceedings and approvals required to authorize
            Twentieth Bancorp to enter into the Agreement and to perform its
            obligations and agreements and carry out the transactions described
            herein have been duly and properly completed or obtained,


                                   App. I-53
<PAGE>   143
             and

     (iii)   the Agreement constitutes the valid and binding agreement of
             Twentieth Bancorp enforceable in accordance with its terms (except
             to the extent enforceability may be limited by (A) applicable
             bankruptcy, insolvency, reorganization, moratorium or similar laws
             from time to time in effect which affect creditors' rights
             generally, (B) legal and equitable limitations on the availability
             of injunctive relief, specific performance and other equitable
             remedies, (C) general principles of equity governing and limiting
             the availability of specific performance, injunctive relief and
             other equitable remedies, and (D) applicable laws and regulations
             and the applications of principles of public policy underlying such
             laws and regulations limiting the enforceability of indemnification
             provisions).

6.   Neither the execution and delivery of the Agreement, nor the
     consummation of the transactions described therein, nor compliance by
     Twentieth Bancorp with any of its obligations or agreements contained
     therein, will:

     (i)     conflict with or result in a breach of the terms and conditions of,
             or constitute a default or violation under any provision of, the
             Articles of Incorporation or Bylaws of Twentieth Bancorp or the
             Bank, or, to our knowledge, any contract, agreement, lease,
             mortgage, note, bond, indenture, license, or obligation or
             understanding (oral or written) to which Twentieth Bancorp or the
             Bank is bound or by which it, its business, capital stock or any of
             its properties or assets may be affected;

     (ii)    to our knowledge, result in the creation or imposition of any lien,
             claim, interest, charge, restriction or encumbrance upon any of the
             properties or assets of Twentieth Bancorp or the Bank;

     (iii)   violate any applicable federal or state statute, law, rule or
             regulation, or, to our knowledge, any judgment, order, writ,
             injunction or decree of any court, administrative or regulatory
             agency or governmental body; or

     (iv)    to our knowledge, result in the acceleration of any obligation or
             indebtedness of Twentieth Bancorp or the Bank.

7.   No consents, approvals or waivers are required to be obtained from
     any person or entity in connection with Twentieth Bancorp's execution and
     delivery of the Agreement, or, to our knowledge, the performance of its
     obligations or agreements or the consummation of the transactions described
     herein, except for approvals of Twentieth Bancorp's shareholders and of
     governmental or regulatory authorities which have been obtained.

8.   The Proxy Statement delivered to the shareholders of Twentieth Bancorp
     complied as to form in all material respects with applicable regulations of
     the Securities and Exchange Commission.

9.   There are no actions, suits, arbitrations, controversies or other
     proceedings or investigations


                                   App. I-54
<PAGE>   144
     (or, to our knowledge, any facts or circumstances which reasonably could
     result in such), including without limitation any such action by any
     governmental or regulatory authority, which currently exists or is ongoing,
     pending or, to our knowledge, threatened, contemplated or probable of
     assertion, against, relating to or otherwise affecting Twentieth Bancorp or
     the Bank or any of its properties or assets which, if determined adversely,
     could result in liability on the part of Twentieth Bancorp or the Bank for,
     or subject it to, monetary damages, fines or penalties, an injunction, or
     which could have a material adverse effect on Twentieth Bancorp's
     consolidated financial condition, results of operations, prospects,
     business, assets, loan portfolio, investments, properties or operations or
     on the ability of Twentieth Bancorp to consummate the Agreement;

     To our knowledge, Twentieth Bancorp and the Bank have all licenses,
     permits, orders, authorizations or approvals ("Permits") of any federal,
     state, local or foreign governmental or regulatory body that are material
     to or necessary for the conduct of their banking business or to own, lease
     and operate their properties; all such Permits are in full force and
     effect; no material violations are or have been recorded in respect of any
     such Permits; and, to our knowledge, no proceeding is pending, threatened
     or probable of assertion to suspend, cancel, revoke or limit any Permit;

     Except as reflected in the Twentieth Bancorp Disclosure Statement, neither
     Twentieth Bancorp nor the Bank is subject to any supervisory agreement,
     enforcement order, writ, injunction, capital directive, supervisory
     directive, memorandum of understanding or other similar agreement, order,
     directive, memorandum or consent of, with or issued by any regulatory or
     other governmental authority (including without limitation the FRB or the
     Commission) relating to its financial condition, directors or officers,
     operations, capital, regulatory compliance or otherwise; there are no
     judgments, orders, stipulations, injunctions, decrees or awards against
     Twentieth Bancorp or the Bank which in any manner limit, restrict,
     regulate, enjoin or prohibit any present or past business or practice of
     Twentieth Bancorp or the Bank; and, to the best of our knowledge and
     belief, neither Twentieth Bancorp nor the Bank has been advised nor has any
     reason to believe that any regulatory or other governmental authority or
     any court is contemplating, threatening or requesting the issuance of any
     such agreement, order, injunction, directive, memorandum, judgment,
     stipulation, decree or award.

10.  When a Certificate of Merger has been duly executed by Twentieth Bancorp
     and, with the approval of the West Virginia Board, has been filed with the
     Secretary of State of West Virginia in accordance with law, the Merger will
     become effective at the time of the issuance of the Certificate of Merger
     by the Secretary of State of West Virginia.

     We have participated in conferences with representatives  of Twentieth
Bancorp and the Bank and their and your respective accountants and counsel in
connection with the preparation of the Registration Statement and the Proxy
Statement and have considered the matters required to be stated therein and the
statements contained therein and, based on the foregoing (and, in certain
circumstances relying as to materiality on the opinions of officers and
representatives of Twentieth Bancorp and the Bank) nothing has come to our
attention which would lead us to believe that the Registration Statement at the
time it became effective, or the Proxy Statement, at the time it was


                                   App. I-55
<PAGE>   145
distributed to Twentieth Bancorp's shareholders, contained any untrue statement
of a material fact or omitted to state a material fact required to be stated
herein or necessary to make the statements therein not misleading (except that
we express no opinion regarding any information contained in the Registration
Statement regarding Horizon Bancorp, or as to any financial statements or other
financial and statistical data included therein).

     We are licensed to practice in the State of West Virginia, and our opinions
are not intended to, and do not, cover the laws of any other state. To the
extent that matters as to which we have opined may be governed by the laws of
any other state, our opinions are given as if such matters were governed by the
laws of the State of West Virginia.  Our opinion is based upon the reported
decision of the West Virginia Supreme Court of Appeals as of the date hereof.

     The opinions rendered herein are solely for your benefit and are not to be
used, circulated or otherwise referred to without our prior written consent.

                                        Very truly yours,

                                        _________________

                                        _________________
        

                                   App. I-56
<PAGE>   146

                                   EXHIBIT C

                              EMPLOYMENT AGREEMENT


     THIS EMPLOYMENT AGREEMENT ("Agreement") made as of ________________, 1996
by and between THE TWENTIETH  STREET BANK, a banking corporation organized under
the laws of West Virginia (the "Employer"), and _________________________ (the
"Executive").

                          W I T N E S S T H   T H A T:

     WHEREAS, Executive has been employed by Employer as _______________; and

     WHEREAS, Executive desires to provide for the continued employment of the
Executive upon the terms and conditions contained herein.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein set forth, the parties covenant and agree as follows:

     1.      EMPLOYMENT:

             (A)  POSITION.  Executive shall serve as ________________________.

             (B)  SERVICES.  Employer agrees to employ the Executive to
perform services for the Employer in the capacities indicated above in the
Employment Area and the Executive agrees to perform such services upon the
terms and conditions herein provided.  "Employment Area" shall mean the City of
Huntington, West Virginia and any other location within thirty (30) miles of
the city limits of Huntington.  The Executive also agrees to perform such
managerial duties and responsibilities as shall be assigned to him by the Board
of Directors of the Employer, which duties and responsibilities shall be of the
character required by his assigned offices.  The Executive shall devote his
time and attention on a full-time basis to the discharge of the duties assigned
by the Employer and undertaken by him hereunder.  The Executive shall not,
during the term of this Agreement, engage in any activities on behalf of the
Employer not sanctioned or approved by Employer's Board of Directors.

     2.      TERM AND COMPENSATION:

             (A)  TERM OF EMPLOYMENT.  The term of the employment hereunder 
shall be from _______________________ , 1996 to and including the first to 
occur of:  (i) except as otherwise provided in Section 3 hereof, 
______________________, 199___, or (ii) the Executive's death.

             (B)  COMPENSATION.  During the terms of employment hereunder, 
the Executive shall receive for his services a base salary (exclusive of 
incentive or bonus compensation) in amounts


                                   App. I-57
<PAGE>   147
determined by the Board of Directors or an appropriate committee of the
Employer in accordance with the salary administration program of the Employer
as the same may from time to time be in effect, but in no event shall such base
salary be less than $________________, including all salary and director's and
committee fees received from Employer or any of its affiliates, ("Base
Salary").  The Base Salary may be increased, but not decreased, by the Board of
Directors of Employer and, if increased, the new salary level will constitute
the Base Salary for purposes of this Agreement.  Executive shall also be
reimbursed for his reasonable expenses associated with attendance at banking
conventions, club membership dues and shall continue to be provided with a Bank
owned automobile for business use.  Executive will continue to receive life
insurance protection as previously provided subject to his continued
insurability at reasonable rates.

     (C)  BENEFITS.  The Executive shall be eligible for full participation
in any additional plan, programs or forms of compensation or benefits that the
Employer's Board of Directors might hereinafter provide to the class of
employees that includes the Executive.

     (D)  INCAPACITY.  In the event of the Executive's physical or mental
incapacity, this Agreement shall terminate and the Employer shall pay or provide
to the Executive the compensation and benefits provided under the Employer's
disability plans in effect at that time.  For the purposes of this Agreement,
the term "Executive's physical or mental incapacity" shall mean the Executive's
illness or other involuntary physical or mental condition which prevents the
Executive from performing the essential functions of his duties for a period of
180 days in any 360 day period.

     (E)  DEATH.  In the event that the Executive's death should occur
during the term of this Agreement, this Agreement shall terminate and the
Executive or his estate or beneficiaries, as the case may be, shall be entitled
only to any and all retirement or death benefits payable under the Employer's
plans in effect at that time and no further compensation, including severance
compensation, will be paid under this Agreement.

     3.   TERMINATION BY THE EMPLOYER.

          (A)      TERMINATION FOR GOOD CAUSE BY THE EMPLOYER.  Nothing
hereunder contained shall prevent the Employer from terminating for good cause
the services of the Executive at any time prior to the expiration of this
Agreement. Termination of employment "for good cause" means a dismissal of the
Executive because of (i) the material failure of the Executive, after written
notice, to render services to the Employer in a manner satisfactory to a
majority of the Employer's Board of Directors, as required herein, (ii) the
Executive's gross or wilful neglect or duty; or (iii) fraudulent or criminal
conduct; (iv) conduct constituting moral turpitude; (v) material breach of any
of the provisions of this Agreement, or (vi) the absence of the Executive from
his position and/or the failure to perform his duties on a full-time basis for
six (6) consecutive months other than for physical or mental incapacity.  If the
Employer shall terminate the Executive's employment for good cause, then the
Executive shall not have any rights or claims against the Employer and the
Executive shall be entitled only to receive his Base Salary in respect of
services performed through the Date of Termination.


                                   App. I-58
<PAGE>   148
     (B)  TERMINATION BY THE EXECUTIVE.  The Executive shall be entitled to
terminate his employment for good reasons, in which event the Employer shall be
obligated to pay the Executive and furnish him the benefits provided in Section
4 hereof. "Good reason" shall mean that Employer has breached this Agreement and
shall not have cured its breach within thirty (30) days of receiving notice from
Executive of the nature of such breach.

     The right herein conferred upon the Executive to terminate this employment
agreement for good reason may be exercised by the Executive at any time within
180 days of an event constituting good reason, at his sole discretion, and any
failure by the Executive to exercise this right after he has "good reason" to do
so shall not be deemed a waiver of the right.

     In the event the Executive terminates his employment without "good reason"
then he shall be entitled to no further compensation after the "Date of
Termination" as defined in part (d) of this paragraph 3.

     In addition, Executive may terminate his employment hereunder during the
first year of this Agreement whereupon he shall be paid his Base Salary for six
(6) months and shall not compete or be employed in competition to Bank during
such period.  Violation of this covenant not to compete will obligate Executive
to refund all payments made to him by Bank after his termination of this
Agreement.

         (C)  NOTICE OF TERMINATION.  Any termination of the Executive's
employment by the Employer or by the Executive shall be communicated by a
written Notice of Termination to the other party hereto.  For purposes of this
Agreement, a "Notice of Termination" shall mean a notice which shall indicate
the specific termination provision in this Agreement relied upon and shall set
forth in the facts and circumstances claimed by the party which provides a basis
for termination.

         (D)  DATE OF TERMINATION.  "Date of Termination" shall mean (i) if the
Agreement is terminated by  the Executive, the date on which the Notice of
Termination is delivered, or (ii) if the Agreement is terminated by the Employer
for any reason, the date on which a Notice of Termination is given.

     4.  COMPENSATION UPON TERMINATION.  If, without good cause, the Employer
terminates the services of the Executive prior to the expiration of this
Agreement of if the Executive terminates his employment for good reason, then:

         (A)  ACCRUED BUT UNPAID COMPENSATION.  The Employer shall pay the
Executive's full Base Salary through the Date of Termination at the rate then in
effect and the amount, if any, of awards theretofore made which have not yet
been paid.

         (B)  SEVERANCE ALLOWANCE.  The Employer shall pay the Executive a
severance allowance in equal monthly payments commencing on the last day of the
month in which the Date of Termination occurs, equal in amount to one twelfth
(1/12) of the Base Salary paid to the Executive by Employer in the twelve (12)
months preceding the Notice of Termination.  Such severance allowance shall
continue until the date mentioned above in paragraph 2(a)(i).


                                   App. I-59
<PAGE>   149
         (C)  EMPLOYEE BENEFITS.  The Employer shall maintain in full force
and effect, for the Executive's continued benefit until the earlier of the first
anniversary of the Date of  Termination or the date the Executive becomes a
participant in similar plans, programs or arrangements provided by a subsequent
employer, all life, accident, medical and dental insurance benefit plans and
programs or arrangements in which the Executive was entitled to participate
immediately prior to the Date of Termination, provided that the Executive's
continued participation is possible under the general terms and provisions of
such plan or program is barred, under the terms of the group plans in effect,
the Employer shall arrange to provide the Executive with benefits substantially
similar to those which the Executive is entitled to receive under such plans and
programs.  At the end of the period of coverage, the Executive shall have the
option to have assigned to him at no cost and with no apportionment of prepaid
premiums, any assignable insurance policy owned by the Employer and relating
specifically to the Executive.

     5.  MISCELLANEOUS:

         (A)  WAIVER:  A waiver by any party of any of the terms and
conditions of this Agreement in any instance shall not be deemed or construed to
be a waiver of such terms and conditions for the future, or of any subsequent
breach thereof.

         (B)  ARBITRATION.  Any dispute among the parties hereto arising out of
or with respect to this Agreement or any of its provisions shall be resolved by
the sole and exclusive remedy of binding arbitration, as follows:  the Employer
and Employee shall name one arbitrator; the arbitrators so selected shall each
name a third arbitrator; the decision of the majority of the arbitrators shall
be binding upon the parties and enforceable in a court of competent
jurisdiction.  The arbitration proceeding shall be conducted in Huntington, West
Virginia.

         (C)  SEVERABILITY.  If any provision of this Agreement, as applied to
any circumstances, shall be adjudged by a court to be void and unenforceable,
the same shall in no way affect any other provision of this Agreement or the
applicability of such provision to any other circumstances.

         (D)  AMENDMENT.  This Agreement may not be varied, altered, modified,
changed, or in any way amended except by an instrument in writing, executed by
the parties hereto or their legal representatives.

         (E)  NONASSIGNABILITY.  Neither the Executive nor his estate shall have
any right to commute, sell, assign, transfer or otherwise convey the right to
receive any payments hereunder, which payments and the right thereto are
expressly declared to be nonassignable and nontransferable.

         (F)  BINDING EFFECT.  This Agreement shall be binding upon and insure
to the benefit of the Executive (and his personal representative), the Employer
and any successor organization or organizations which shall succeed to
substantially all of the business and property of the Employer, whether by means
of merger, consolidation, acquisition of all or substantially all of the assets
of the Employer or otherwise, including by operation of law.


                                   App. I-60
<PAGE>   150
         (G)  GOVERNING LAW.  This Agreement shall be governed by and
construed in accordance with the laws of West Virginia, whether statutory or
decisional, applicable to agreements made and entirely to be performed within
such state and such provisions of federal law as may be applicable.

     IN WITNESS WHEREOF,  the parties have executed this Agreement as of the day
and year first above written.  
                                          EXECUTIVE:

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

                                          THE TWENTIETH STREET BANK

                                          By: 
                                              --------------------------------
                                                  Its: 
                                                       -----------------------

                                   App. I-61
<PAGE>   151
                              EMPLOYMENT AGREEMENT


     THIS EMPLOYMENT AGREEMENT ("Agreement") made as of ________________, 1996
by and between THE TWENTIETH  STREET BANK, a banking corporation organized under
the laws of West Virginia (the "Employer"), and Brian Shepherd (the
"Executive").

                          W I T N E S S T H   T H A T:

     WHEREAS, Executive has been employed by Employer as _______________; and

     WHEREAS, Executive desires to provide for the continued employment of the
Executive upon the terms and conditions contained herein.

     NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein set forth, the parties covenant and agree as follows:

     1.  EMPLOYMENT:

         (A)  POSITION.  Executive shall serve as ____________________________.

         (B)      SERVICES.  Employer agrees to employ the Executive to perform
services for the Employer in the capacities indicated above in the Employment
Area and the Executive agrees to perform such services upon the terms and
conditions herein provided.  "Employment Area" shall mean the City of
Huntington, West Virginia and any other location within thirty (30) miles of the
city limits of Huntington.  The Executive also agrees to perform such managerial
duties and responsibilities as shall be assigned to him by the Board of
Directors of the Employer, which duties and responsibilities shall be of the
character required by his assigned offices.  The Executive shall devote his time
and attention on a full-time basis to the discharge of the duties assigned by
the Employer and undertaken by him hereunder.  The Executive shall not, during
the term of this Agreement, engage in any activities on behalf of the Employer
not sanctioned or approved by Employer's Board of Directors.

     2.  TERM AND COMPENSATION:

         (A)      TERM OF EMPLOYMENT.  The term of the employment hereunder
shall be from _______________________ , 1996 to and including the first to occur
of:  (i) except as otherwise provided in Section 3 hereof,
______________________, 1998, or (ii) the Executive's death.

         (B)      COMPENSATION.  During the terms of employment hereunder, the
Executive shall receive for his services a base salary (exclusive of incentive
or bonus compensation) in amounts determined by the Board of Directors or an
appropriate committee of the Employer in accordance with the salary
administration program of the Employer as the same may from time to time be in
effect, but in no event shall such base salary be less than $________________,
including all salary and director's and committee fees received from Employer or
any of its affiliates, ("Base Salary").


                                  App. I-62
<PAGE>   152

The Base Salary may be increased, but not decreased, by the Board of Directors
of Employer and, if increased, the new salary level will constitute the Base
Salary for purposes of this Agreement.

         (C)  BENEFITS.  The Executive shall be eligible for full
participation in any additional plan, programs or forms of compensation or
benefits that the Employer's Board of Directors might hereinafter provide to the
class of employees that includes the Executive.

         (D)  INCAPACITY.  In the event of the Executive's physical or mental
incapacity, this Agreement shall terminate and the Employer shall pay or provide
to the Executive the compensation and benefits provided under the Employer's
disability plans in effect at that time.  For the purposes of this Agreement,
the term "Executive's physical or mental incapacity" shall mean the Executive's
illness or other involuntary physical or mental condition which prevents the
Executive from performing the essential functions of his duties for a period of
180 days in any 360 day period.

         (E)  DEATH.  In the event that the Executive's death should occur
during the term of this Agreement, this Agreement shall terminate and the
Executive or his estate or beneficiaries, as the case may be, shall be entitled
only to any and all retirement or death benefits payable under the Employer's
plans in effect at that time and no further compensation, including severance
compensation, will be paid under this Agreement.

     3.  TERMINATION BY THE EMPLOYER.

         (A)  TERMINATION FOR GOOD CAUSE BY THE EMPLOYER.  Nothing hereunder
contained shall prevent the Employer from terminating for good cause the
services of the Executive at any time prior to the expiration of this Agreement.
Termination of employment "for good cause" means a dismissal of the Executive
because of (i) the material failure of the Executive, after written notice, to
render services to the Employer in a manner satisfactory to a majority of the
Employer's Board of Directors, as required herein, (ii) the Executive's gross or
wilful neglect or duty; or (iii) fraudulent or criminal conduct; (iv) conduct
constituting moral turpitude; (v) material breach of any of the provisions of
this Agreement, or (vi) the absence of the Executive from his position and/or
the failure to perform his duties on a full-time basis for six (6) consecutive
months other than for physical or mental incapacity.  If the Employer shall
terminate the Executive's employment for good cause, then the Executive shall
not have any rights or claims against the Employer and the Executive shall be
entitled only to receive his Base Salary in respect of services performed
through the Date of Termination.

         (B)  TERMINATION BY THE EXECUTIVE.  The Executive shall be entitled to
terminate his employment for good reasons, in which event the Employer shall be
obligated to pay the Executive and furnish him the benefits provided in Section
4 hereof.  "Good reason" shall mean that Employer has breached this Agreement
and shall not have cured its breach within thirty (30) days of receiving notice
from Executive of the nature of such breach.

         The right herein conferred upon the Executive to terminate this
employment agreement for good reason may be exercised by the Executive at any
time within 180 days of an event constituting good reason, at his sole
discretion, and any failure by the Executive to exercise this right after he has
"good reason" to do so shall not be deemed a waiver of the right.


                                   App. I-63
<PAGE>   153

         In the event the Executive terminates his employment without "good
reason" then he shall be entitled to no further compensation after the "Date of
Termination" as defined in part (d) of this paragraph 3.

         In addition, Executive may terminate his employment hereunder during
the first year of this Agreement whereupon he shall be paid his Base Salary for
six (6) months and shall not compete or be employed in competition to Bank
during such period.  Violation of this covenant not to compete will obligate
Executive to refund all payments made to him by Bank after his termination of
this Agreement.

         (C)  NOTICE OF TERMINATION.  Any termination of the Executive's
employment by the Employer or by the Executive shall be communicated by a
written Notice of Termination to the other party hereto.  For purposes of this
Agreement, a "Notice of Termination" shall mean a notice which shall indicate
the specific termination provision in this Agreement relied upon and shall set
forth in the facts and circumstances claimed by the party which provides a basis
for termination.

         (D)  DATE OF TERMINATION.  "Date of Termination" shall mean (i) if the
Agreement is terminated by  the Executive, the date on which the Notice of
Termination is delivered, or (ii) if the Agreement is terminated by the Employer
for any reason, the date on which a Notice of Termination is given.

     4.  COMPENSATION UPON TERMINATION.  If, without good cause, the Employer
terminates the services of the Executive prior to the expiration of this
Agreement of if the Executive terminates his employment for good reason, then:

         (A)  ACCRUED BUT UNPAID COMPENSATION.  The Employer shall pay the
Executive's full Base Salary through the Date of Termination at the rate then in
effect and the amount, if any, of awards theretofore made which have not yet
been paid.

         (B)  SEVERANCE ALLOWANCE.  The Employer shall pay the Executive a
severance allowance in equal monthly payments commencing on the last day of the
month in which the Date of Termination occurs, equal in amount to one twelfth
(1/12) of the Base Salary paid to the Executive by Employer in the twelve (12)
months preceding the Notice of Termination.  Such severance allowance shall
continue until the date mentioned above in paragraph 2(a)(i).

         (C)   EMPLOYEE BENEFITS.  The Employer shall maintain in full force and
effect, for the Executive's continued benefit until the earlier of the first
anniversary of the Date of  Termination or the date the Executive becomes a
participant in similar plans, programs or arrangements provided by a subsequent
employer, all life, accident, medical and dental insurance benefit plans and
programs or arrangements in which the Executive was entitled to participate
immediately prior to the Date of Termination, provided that the Executive's
continued participation is possible under the general terms and provisions of
such plan or program is barred, under the terms of the group plans in effect,
the Employer shall arrange to provide the Executive with benefits substantially
similar to those which the


                                   App. I-64
<PAGE>   154
Executive is entitled to receive under such plans and programs.  At the end of
the period of coverage, the Executive shall have the option to have assigned to
him at no cost and with no apportionment of prepaid premiums, any assignable
insurance policy owned by the Employer and relating specifically to the
Executive.

     5.  MISCELLANEOUS:

         (A)      WAIVER:  A waiver by any party of any of the terms and
conditions of this Agreement in any instance shall not be deemed or construed to
be a waiver of such terms and conditions for the future, or of any subsequent
breach thereof.

         (B)  ARBITRATION.  Any dispute among the parties hereto arising out of
or with respect to this Agreement or any of its provisions shall be resolved by
the sole and exclusive remedy of binding arbitration, as follows:  the Employer
and Employee shall name one arbitrator; the arbitrators so selected shall each
name a third arbitrator; the decision of the majority of the arbitrators shall
be binding upon the parties and enforceable in a court of competent
jurisdiction.  The arbitration proceeding shall be conducted in Huntington, West
Virginia.

         (C)  SEVERABILITY.  If any provision of this Agreement, as applied to
any circumstances, shall be adjudged by a court to be void and unenforceable,
the same shall in no way affect any other provision of this Agreement or the
applicability of such provision to any other circumstances.

         (D)  AMENDMENT.  This Agreement may not be varied, altered, modified,
changed, or in any way amended except by an instrument in writing, executed by
the parties hereto or their legal representatives.

         (E)  NONASSIGNABILITY.  Neither the Executive nor his estate shall have
any right to commute, sell, assign, transfer or otherwise convey the right to
receive any payments hereunder, which payments and the right thereto are
expressly declared to be nonassignable and nontransferable.

         (F)  BINDING EFFECT.  This Agreement shall be binding upon and insure
to the benefit of the Executive (and his personal representative), the Employer
and any successor organization or organizations which shall succeed to
substantially all of the business and property of the Employer, whether by means
of merger, consolidation, acquisition of all or substantially all of the assets
of the Employer or otherwise, including by operation of law.

         (G)  GOVERNING LAW.  This Agreement shall be governed by and construed
in accordance with the laws of West Virginia, whether statutory or decisional,
applicable to agreements made and entirely to be performed within such state and
such provisions of federal law as may be applicable.


                                   App. I-65
<PAGE>   155
     IN WITNESS WHEREOF,  the parties have executed this Agreement as of the day
and year first above written.

                                   EXECUTIVE:

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


                                   THE TWENTIETH STREET BANK

                                   By: 
                                       --------------------------------

                                       Its: 
                                            --------------------------- 


                                   App. I-66
<PAGE>   156
                                  APPENDIX II


                      THE ROBINSON-HUMPHREY COMPANY, INC.


                                February 6, 1996


Board of Directors
Horizon Bancorp, Inc.
One Park Avenue
Beckley, West Virginia  25802

Ladies and Gentlemen:

     In connection with the proposed acquisition of Twentieth Bancorp, Inc.
("Twentieth") by Horizon Bancorp, Inc. ("Horizon") (the "Merger"), you have
asked us to render an opinion as to whether the financial terms of the Merger,
as provided in the Acquisition Agreement by and between Twentieth Bancorp, Inc.
and Horizon Bancorp, Inc. dated February 6, 1996 among such parties (the "Merger
Agreement"), are fair, from a financial point of view, to the stockholders of
HORIZON.  Under the terms of the Merger, holders of all outstanding shares of
TWENTIETH stock will receive consideration equal to 1.01 HORIZON common shares
for each TWENTIETH share held, subject to adjustment under certain
circumstances.

     Our firm, as part of its investment banking business, is frequently
involved in the valuation of securities as related to public underwritings,
private placements, mergers, acquisitions, recapitalizations and other purposes.

     In connection with our study for rendering this opinion, we have reviewed
the Merger Agreement, TWENTIETH's financial results for fiscal years 1990
through 1995 and certain documents and information we deem relevant to our
analysis.  We have also held discussions with senior management of TWENTIETH for
the purpose of reviewing the historical and current operations of, and outlook
for TWENTIETH, industry trends, the terms of the proposed Merger, and related
matters.

     We have also studied financial data concerning certain other publicly
traded banks which we deem comparable to TWENTIETH as well as certain financial
data relating to acquisitions of other banks that we deem relevant or
comparable.  In addition, we have reviewed other published information,
performed certain financial analyses and considered other factors and
information which we deem relevant.

     We have reviewed similar information and data relating to HORIZON including
its historical financial statements, from fiscal 1990 through 1995.


                                   App. II-1
<PAGE>   157


     In rendering this opinion, we have relied upon the accuracy of the Merger
Agreement, the financial information listed above, and other information
furnished to us by TWENTIETH and HORIZON.  We have not separately verified this
information nor have we made an independent evaluation of any of the assets or
liabilities of TWENTIETH and HORIZON.

     Based upon the forgoing and upon current market and economic conditions, we
are of the opinion that, from a financial point of view, the terms of the Merger
as provided in the Merger Agreement are fair to the stockholders of HORIZON.

                                        Very truly yours,

                                        THE ROBINSON-HUMPHREY COMPANY, INC.


                                   App. II-2
<PAGE>   158


                                 April 4, 1996


The Board of Directors
Twentieth Bancorp, Inc.
1900 Third Avenue
Huntington, West Virginia  25703

Dear Members of the Board:

     Twentieth Bancorp, Inc., Huntington, West Virginia ("Twentieth") and
Horizon Bancorp, Inc., Beckley, West Virginia ("Horizon") have entered into an
agreement providing for the acquisition of Twentieth by Horizon ("Acquisition").
The terms of the Acquisition are set forth in the Plan of Merger and
Reorganization dated February 6, 1996.

     The terms of the Acquisition provide that, with the possible exception of
those shares as to which dissenter's rights may be perfected, each common share
of Twentieth will be converted into 1.01 shares of common stock of Horizon (the
"Exchange Ratio").

     You have asked our opinion as to whether the Exchange Ratio is fair to the
respective shareholders of Twentieth from a financial point of view.

     In rendering our opinion, we have evaluated the consolidated financial
statements of Twentieth available to us from published sources.  In addition,
we have, among other things:  (a) to the extent deemed relevant, analyzed
selected public information of certain other financial institutions and compared
Twentieth and Horizon from a financial point of view to the other financial
institutions; (b) considered the historical market price of the common stock of
Twentieth and Horizon; (c) compared the terms of the Acquisition with the terms
of certain other comparable transactions to the extent information concerning
such acquisitions was publicly available; (d) reviewed the Plan of Merger and
Reorganization and related documents; and (e) made such other analyses and
examinations as we deemed necessary.  We also met with various senior officers
of Twentieth and Horizon to discuss the foregoing as well as other matters that
may be relevant.

     We have not independently verified the financial and other information
concerning Twentieth, or Horizon, or other data which we have considered in our
review.  We have assumed the accuracy and completeness of all such information;
however, we have no reason to believe that such information is not accurate and
complete.  Our conclusion is rendered on the basis of securities


                                   App. II-3
<PAGE>   159
market conditions prevailing as of the date hereof and on the conditions and
prospects, financial and otherwise, of Twentieth and Horizon as they exist and
are known to us as of December 31, 1995.

     We have acted as financial advisor to Twentieth in connection with the
Acquisition and will receive from Twentieth a fee for our services, a
significant portion of which is contingent upon the consummation of the
Acquisition.

     It is understood that this opinion may be included in its entirety in any
communication by Twentieth or the Board of Directors to the stockholders of
Twentieth.  The opinion may not, however, be summarized, excerpted from or
otherwise publicly referred to without our prior written consent.

     Based on the foregoing, and subject to the limitations described above, we
are of the opinion that the Exchange Ratio is fair to the shareholders of
Twentieth from a financial point of view.

                                         Sincerely,


                                         Baxter Fentriss and Company


                                   App. II-4
<PAGE>   160
                                  APPENDIX III


                   CODE OF WEST VIRGINIA OF 1931, AS AMENDED


Section 31-1-122.    RIGHT OF SHAREHOLDERS TO DISSENT.

     Any shareholder of a corporation shall have the right to dissent from any
of the following corporate actions:

     (a)     Any plan of merger or consolidation to which the corporation is a
party; or

     (b)     Any sale or exchange of all or substantially all of the property 
and assets of the corporation not made in the usual and regular course of its
business, including a sale in dissolution, but not including a sale pursuant to
an order of a court having jurisdiction in the premises or a sale for cash on
terms requiring that all or substantially all of the net proceeds of sale be
distributed to the shareholders in accordance with their respective interests
within one year after the date of sale.

     A shareholder may dissent as to less than all of the shares registered in
his name.  In that event, his rights shall be determined as if the shares as to
which he has dissented and his other shares were registered in the names of
different shareholders.


Section 31-1-123.   RIGHTS OF DISSENTING SHAREHOLDERS; PROCEDURE FOR PURCHASING
OF DISSENTING SHAREHOLDERS' SHARES; CIVIL ACTION FOR DETERMINING VALUE OF
SHARES; PROCEDURE FOR TRANSFERRING OF SUCH SHARES TO CORPORATION AND PAYMENT
THEREFOR.

     (a)   Any shareholder electing to exercise his right to dissent, pursuant
to section one hundred twenty-two [Section 31-1-122] of this article, shall file
with the corporation, prior to or at the meeting of shareholders at which such
proposed corporate action is submitted to a vote, a written objection to such
proposed corporate action.  If such proposed corporate action be approved by the
required vote and such shareholder shall not have voted in favor thereof, such
shareholder may, within ten days after the date on which the vote was taken or
if a corporation is to be merged without a vote of its shareholders into another
corporation, any of its shareholders may, within fifteen days after the plan of
such merger shall have been mailed to such shareholders, making written demand
on the corporation, or, in the case of a merger or consolidation, on the
surviving or new corporation, domestic or foreign, for payment of the fair value
of such shareholder's shares, and, if such proposed corporate action is
effected, such corporation shall pay to such shareholder, upon surrender of the
certificate or certificates representing such shares, the fair value thereof as
of the day prior to the date on which the vote was taken approving the proposed
corporate action, excluding any appreciation or depreciation in anticipation of
such corporate action.  Any shareholder failing to make demand within the
ten-day period shall be bound by the terms of the proposed corporate action.
Any shareholder making such demand shall thereafter be entitled to only a
payment as in this section provided and shall not be entitled to vote or to
exercise any other rights of a shareholder.


                                   App. III-1
<PAGE>   161

     (b)  No such demand may be withdrawn unless the corporation shall consent
thereto.  If, however, such demand shall be withdrawn upon consent, or if the
proposed corporate action shall be abandoned or rescinded or the shareholders
shall revoke the authority to effect such action, or if, in the case of a
merger, on the date of the filing of the articles of merger the surviving
corporation, is the owner of all the outstanding shares of the other
corporations, domestic and foreign, that are parties to the merger, or if no
demand or petition for the determination of fair value by a court of general
civil jurisdiction have been made or filed within the time provided in
subsection (e) of this section, or if a court of general civil jurisdiction
shall determine that such shareholder is not entitled to the relief provided by
this section, then the right of such shareholder to be paid the fair value of
his shares shall cease and his status as a shareholder shall be restored,
without prejudice to any corporate proceedings which may have been taken during
the interim.

     (c)  Within ten days after such corporate action is effected, the
corporation, or, in the case of a merger or consolidation, the surviving or new
corporation, domestic or foreign, shall give written notice thereof to each
dissenting shareholder who has made demand as herein provided, and shall make a
written offer to each shareholder to pay for such shares at a specified price
deemed by such corporation to be fair value thereof.  Such notice and offer
shall be accompanied by a balance sheet of the corporation the shares of which
the dissenting shareholder holds, as of the latest available date and not more
than twelve months prior to the making of such offer, and a profit and loss
statement of such corporation for the twelve months' period ended on the date of
such balance sheet.

     (d)  If within thirty days after the date on which such corporate action is
effected the fair value of such shares is agreed upon between any such
dissenting shareholder and the corporation, payment therefor shall be made
within ninety days after the date on which such corporate action was effected,
upon surrender of the certificate or certificates representing such shares. Upon
payment of the agreed value the dissenting shareholder shall cease to have any
interest in such shares.

     (e)  If within such period of thirty days, a dissenting shareholder and the
corporation do not so agree, then the corporation shall within thirty days after
receipt of written demand from any dissenting shareholder, which written demand
must be given within sixty days after the date on which such corporate action
was effected, file a complaint in a court of general civil jurisdiction
requesting that the fair value of such shares be found and determined, or the
corporation may file such complaint at any time within such sixty-day period at
its own election.  Such complaint shall be filed in any court of general civil
jurisdiction in the county in which the principal office of the corporation is
situated, or, if there be no such office in this State, in the county in which
any dissenting shareholder resides or is found or in which the property of such
corporation, or any part of it, may be.  If the corporation shall fail to
institute such proceedings, any dissenting shareholder may do so in the name of
the corporation.  All dissenting shareholders wherever residing, may be made
parties to the proceedings as an action against their shares quasi in rem.  A
copy of the complaint shall be served on each dissenting shareholder who is a
resident of this State in the same manner as in other civil actions.  Dissenting
shareholders who are nonresidents of this State shall be served a copy of the
complaint by registered or certified mail, return receipt requested.  In
addition, service upon such nonresident shareholders shall be made by
publication, as provided in Rule 4(e)(2) of the West Virginia Rules of


                                   App. III-2
<PAGE>   162
Civil Procedure.  All shareholders who are parties to the proceeding shall be
entitled to judgment against the corporation for the amount of the fair value
of their shares.  The court may, if it so elects, appoint one or more persons
as appraisers to receive evidence and recommend a decision on the question of
fair value.  The appraisers shall have such power and authority as shall be
specified in the order of their appointment or any subsequent appointment.  The
judgment shall be payable only upon and concurrently with the surrender to the
corporation of the certificate or certificates representing such shares.  Upon
payment of the judgment, the dissenting shareholder shall cease to have any
interest in such shares.

     The judgment shall include an allowance for interest at such rate as the
court may find to be fair and equitable in all the circumstances, from the date
on which the vote was taken on the proposed corporate action to the date of
payment.

     The costs and expenses of any such proceeding shall be determined by the
court and shall be assessed against the corporation, but all or any part of such
costs and expenses may be apportioned and assessed as the court may deem
equitable against any or all of the dissenting shareholders who are parties to
the proceeding to whom the corporation shall have made an offer to pay for the
shares if the court shall find that the action of such shareholders in failing
to accept such offer was arbitrary or vexatious or not in good faith.  Such
expenses shall include reasonable compensation for and reasonable expenses of
the appraisers, but shall exclude the fees and expenses of counsel for and
experts employed by any party; but if the fair value of the shares as determined
materially exceeds the amount which the corporation offered to pay therefor, or
if no offer was made, the court in Its discretion may award to any shareholder
who is a party to the proceeding such sum as the court may determine to be
reasonable compensation to any expert or experts employed by the shareholder in
the proceeding.  Any party to the proceeding may appeal any judgment or ruling
of the court as in other civil cases.

     (f)  Within twenty days after demanding payment for his shares, each
shareholder demanding payment shall submit the certificate or certificates
representing his shares to the corporation for notation thereon that such demand
has been made.  His failure to do so shall, at the option of the corporation,
terminate his rights under this section unless a court of general civil
jurisdiction, for good and sufficient cause shown, shall otherwise direct.  If
shares represented by a certificate on which notation has been so made shall be
transferred, each new certificate issued therefor shall bear similar notation,
together with the name of the original dissenting holder of such shares, and a
transferee of such shares shall acquire by such transfer no rights in the
corporation other than those which the original dissenting shareholder had after
making demand for payment of the fair value thereof.

     (g)  Shares acquired by a corporation pursuant to payment of the agreed
value therefor or to payment of the judgment entered therefor, as in this
section provided, may be held and disposed of by such corporation as in the case
of other treasury shares, except that, in the case of a merger or consolidation,
there may be held and disposed of as the plan of merger or consolidation may
otherwise provide.


                                   App. III-3
<PAGE>   163
                PART II.  INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20.  Indemnification of Directors and Officers

     Section 31-1-9 of the West Virginia Code of 1931, as amended, permits
indemnification of present or former officers or directors who are named or
threatened to be named as parties to a legal action arising out of their
activities as officers or directors under certain circumstances.

     The bylaws of Horizon Bancorp, Inc. contain the following provision with
regard to the indemnification of its directors and officers.

          SECTION 3.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.  The
     corporation shall indemnify any person who was or is a party, or is
     threatened to be made a party to any threatened, pending or completed
     action or proceeding, whether civil, criminal, administrative or
     investigative (other than an action by or in the right of the corporation)
     by reason of the fact that he is or was a director, officer, employee or
     agent of the corporation, or is or was serving at the request of the
     corporation as a director, officer, employee or agent of another
     corporation, partnership, joint venture, trust or other enterprise, against
     expenses (including attorneys fees), judgments, fines, taxes and penalties
     and interest thereon, and amounts paid in settlement actually and
     reasonably incurred by him in connection with such action or proceeding, if
     he acted in good faith and in a manner he reasonably believed to be in or
     not opposed to the best interests of the corporation, and, with respect to
     any criminal action or proceeding, that such person had no reasonable cause
     to believe this conduct was unlawful.

          The corporation shall indemnify any person who was or is a party, or
     is threatened to be made a party to any threatened, pending or completed
     action or proceeding by or in the right of the corporation to procure
     judgement in its favor by reason of the fact that he is or was a director,
     officer, employee or agent of the corporation, or is or was serving at the
     request of the corporation as a director, officer, employee or agent of
     another corporation, partnership, joint venture, trust or other enterprise,
     against expenses (including attorneys fees), actually and reasonably
     incurred by him in connection with such action or proceeding, if he acted
     in good faith and in a manner he reasonably believed to be in or not
     opposed to the best interests of the corporation, except that no
     indemnification shall be made in respect of any claim, issue or matter,
     including but not limited to taxes or any interest or penalties thereon, as
     to which such person shall have been adjudged to be liable for negligence
     or misconduct in the performance of his duty to the Corporation unless and
     only to the extent that the court in which such action or proceeding was
     brought shall determine upon application that, despite the adjudication of
     liability but in view of all circumstances of the case, such person is
     fairly and reasonably entitled to indemnity for such expenses which such
     court shall deem proper.  To the extent that a director, officer, employee
     or agent of a corporation has been successful on the merits or otherwise in
     defense of any action or proceeding heretofore referred to, or in defense


                                   Part II-1
<PAGE>   164
     of any claim, issue or matter therein, he shall be indemnified against
     expenses (including attorneys' fees) actually and reasonably incurred by
     him in connection therewith.

          The corporation will indemnify an officer, director, employee or agent
     of any company which is merged or consolidated with the corporation in
     accordance with the terms and conditions of the merged or consolidated
     company's bylaw or article providing for indemnification.

          Any indemnification provided for herein shall be made by the
     corporation only as authorized in the specific case upon a determination
     that indemnification of the director, officer, employee or agent is proper
     in the circumstances because he has met the applicable standard of conduct
     set forth. Such determination shall be made: (1) by the board of directors
     by a majority vote of a quorum consisting of directors who were not parties
     to such action or proceeding; or (2) if such a quorum is not obtainable, or
     even if obtainable, a quorum of disinterested directors so directs, by
     independent legal counsel in a written opinion; or (3) by the shareholders.

          Expenses (including attorneys' fees) incurred in defending a civil or
     criminal action or proceeding shall be paid by the corporation in advance
     of the final disposition of such action or proceeding as authorized in the
     manner herein provided, upon receipt of an undertaking by or on behalf of
     the director, officer, employee or agent to repay such amount unless it
     shall ultimately be determined that he is entitled to be indemnified by the
     corporation as authorized in this section.

          The indemnification provided for herein shall not be deemed exclusive
     of any other rights to which any shareholder or member may be entitled
     under any bylaw, agreement, vote of shareholders, members or disinterested
     directors or otherwise, both as to action in his official capacity and as
     to a person who has ceased to be a director, officer, employee or agent and
     shall inure to the benefit of the heirs, executors and administrators.

          The directors of the corporation may, from time to time by resolution,
     provide for such additional indemnification or advancement of expenses as
     they deem appropriate to any person, acting for or on behalf of the
     corporation by reason of the fact that he is or was a director, officer,
     employee or agent of the corporation or is or was serving at the request of
     the corporation as a director, officer, employee or agent of another
     corporation, partnership, joint venture, trust or other enterprise.  Such
     indemnification or advancement or expenses may be authorized in such
     resolution or resolutions to the extent the directors deem appropriate
     under the circumstances, but at no time may the directors of the
     corporation provide for additional indemnification or advancement of
     expenses that is contrary to the laws of the State of West Virginia.  This
     additional indemnification and the advancement of expenses is authorized
     pursuant to the provisions of West Virginia Code Section 31-1-9(f), and
     Article X, Section 3 of these bylaws.


                                   Part II-2
<PAGE>   165
     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.


Item 21.  Exhibits and Financial Statement Schedules

     Exhibits required to be filed with this Registration Statement by Item 601
S-K follow the execution page of the Registration Statement.  The required
exhibit index precedes these documents.  Required exhibits which are a part of
the preceding Prospectus/Joint Proxy Statement are incorporated herein by 
reference to their location.


Item 22.  Undertakings

         (1)     The undersigned registrant hereby undertakes:

                 (a)  To file, during any period in which offers or sales
                      are being made, a post-effective amendment to this
                      registrant 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;

                      (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.

                 (b)  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.


                                   Part II-3
<PAGE>   166

              (c)      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.

     (2)  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 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 herein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

     (3)  Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers or controlling
persons of the registrant pursuant to the foregoing provisions, or otherwise,
registrant has been advised that, in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as express in the
Securities Act of 1933 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
Securities Act of 1933 and will be governed by the final adjudication of such
issue.

     (4)  The undersigned registrant hereby undertakes 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.

     (5)  The registrant undertakes that every prospectus (i) that is filed
pursuant to paragraph (4) immediately preceding, or (ii) that purports to meet
he requirements of section 10(a)(3) of the Act and is used in connection with an
offering of securities subject to Rule 415 (Section 230.415), 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.

     (6)  The registrant hereby undertakes to deliver or cause to be delivered
with the prospectus, to each person to whom the prospectus is sent or given, the
latest annual report to security holders that is incorporated by reference in
the prospectus and furnished pursuant to and


                                   Part II-4
<PAGE>   167
meeting the requirements of Rule 14a-3 or Rule 14c-3 under the Securities
Exchange Act of 1934; and where interim financial information required to be
presented by Article 3 of Regulation S-X are not set forth in the prospectus, to
deliver, or cause to be delivered to each person to whom the prospectus is sent
or given, the latest quarterly report that is specifically incorporated by
reference in the prospectus to provide such interim financial information.

     (7)  The registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the prospectus pursuant to
Items 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.

     (8)  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.

                                   SIGNATURES

         Pursuant to the requirements of the Securities Act, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-4 and has duly issued this registration
statement or amendment thereto to be signed on its behalf by the undersigned
hereunto duly authorized in the City of Beckley, State of West Virginia, on the
5th day of April 1996.


                                       HORIZON BANCORP, INC.

                                       By: /s/ FRANK S. HARKINS, JR.
                                           ---------------------------------
                                               Frank S. Harkins, Jr., 
                                               Chairman of the Board

                                       By: /s/ PHILIP L. MCLAUGHLIN
                                           ---------------------------------
                                               Philip L. McLaughlin, 
                                               President and Chief Executive 
                                               Officer


                                       By: /s/ DAVID W. HAMBRICK
                                           ---------------------------------
                                               David W. Hambrick, 
                                               Chief Financial Officer


                                       By: /s/ MARK L. ANDERSON
                                           ---------------------------------
                                               Mark L. Anderson, Controller


                                   Part II-5
<PAGE>   168
         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:

        SIGNATURES                          TITLE                     DATE
        ----------                          -----                     ----

1.       /s/ JOHN M. ALDERSON, IV          Director              April 5, 1996
         -------------------------
         John M. Alderson, IV


2.       /s/ PHILLIP W. CAIN               Director              April 5, 1996
         -------------------------
         Phillip W. Cain


3.       /s/ W. H. FILE, III               Director              April 5, 1996
         -------------------------
         W. H. File, III


4.       /s/ DAVID W. HAMBRICK             Director              April 5, 1996
         -------------------------
         David W. Hambrick


5.       /s/ FRANK S. HARKINS, Jr.        Director              April 5, 1996
         -------------------------
         Frank S. Harkins, Jr.


6.                                         Director              April 5, 1996
         -------------------------
         Tracy W. Hylton, II


7.       /s/ WILLIAM E. KANE               Director              April 5, 1996
         -------------------------
         William E. Kane


8.       /s/ ROBERT L. KOSNOSKI            Director              April 5, 1996
         -------------------------
         Robert L. Kosnoski


9.       /s/ THOMAS E. LILLY               Director              April 5, 1996
         -------------------------
         Thomas E. Lilly


10.      /s/ CAROLYN H. MCCULLOCH          Director              April 5, 1996
         -------------------------
         Carolyn H. McCulloch


                                   Part II-6
<PAGE>   169

11.      /s/ PHILIP L. MCLAUGHLIN           Director              April 5, 1996
         -------------------------
         Philip L. McLaughlin


12.      /s/ HARPER W. NELSON               Director              April 5, 1996
         -------------------------
         Harper W. Nelson


13.      /s/ RODNEY H. PACK                 Director              April 5, 1996
         -------------------------
         Rodney H. Pack


14.      /s/ E. M. PAYNE III                Director              April 5, 1996
         -------------------------
         E. M. Payne III


15.      /s/ R. T. ROGERS                   Director              April 5, 1996
         -------------------------
         R. T. Rogers


16.      /s/ JAMES E. SONGER                Director              April 5, 1996
         -------------------------
         James E. Songer


17.      /s/ ALBERT M. TIECHE, JR.          Director              April 5, 1996
         -------------------------
         Albert M. Tieche, Jr.


18.      /s/ E. A. TUCKWILLER, JR.          Director              April 5, 1996
         -------------------------
         E. A. Tuckwiller, Jr.


19.      /s/ EARL R. TURNER                 Director              April 5, 1996
         -------------------------
         Earl R. Turner


                                   Part II-7
<PAGE>   170
                             HORIZON BANCORP, INC.
                                    FORM S-4
                               INDEX TO EXHIBITS

         The following exhibit and financial statement schedules are filed as
part of this Registration Statement.


                               INDEX TO EXHIBITS


<TABLE>
<CAPTION>

ITEM 601 TABLE                                                                  SEQUENTIAL
REFERENCE                    DESCRIPTION                                        PAGE NO.  
- ---------                    -----------                                        -----------
 <S>                        <C>                                                <C>
    1                        Underwriting agreement                             N/A

    2                        Plan of Merger and Reorganization
                             by and between Twentieth Bancorp,
                             Inc. and Horizon Bancorp, Inc. dated
                             February 6, 1996

    3                        Articles of incorporation and bylaws               N/A
                             of Horizon Bancorp, Inc. (Incorporated
                             into this filing by reference to Horizon
                             Bancorp, Inc.'s S-14 Registration
                             Statement, Registration No. 2-287946
                             on October 4, 1983; the Annual Report
                             on Form 10-K of Horizon Bancorp, Inc.
                             for the year ended December 31, 1983;
                             and the Annual Report on Form 10-K
                             of Horizon Bancorp, Inc. for the year
                             ended December 31, 1985

    4                        Articles of incorporation and bylaws               N/A
                             of Horizon Bancorp, Inc. (Incorporated
                             into this filing by reference to Horizon
                             Bancorp, Inc.'s S-14 Registration
                             Statement, Registration No. 2-287946
                             on October 4, 1983; the Annual Report
                             on Form 10-K of Horizon Bancorp, Inc.
                             for the year ended December 31, 1983;
                             and the Annual Report on Form 10-K
                             of Horizon Bancorp, Inc. for the year
                             ended December 31, 1985
</TABLE>


                                   Part II-8
<PAGE>   171
<TABLE>
<S>                      <C>                                               <C>
 5                        Opinion of Robinson & McElwee re
                          legality

 6                        Opinion re discount on capital shares             N/A

 7                        Opinion re liquidation preference                 N/A

 8                        Opinion of Robinson & McElwee re
                          tax matters

 9                        Voting trust agreement                            N/A

 10                       Plan of Merger and Reorganization
                          by and between Twentieth Bancorp,
                          Inc.and Horizon Bancorp, Inc. dated
                          February 6, 1996

 11                       The Annual Report on Form 10-K of                 N/A
                          Horizon Bancorp, Inc. for the year 
                          ended December 31, 1995 and incorporated
                          herein by reference thereto

 12                       The Annual Report on Form 10-K of                 N/A
                          Horizon Bancorp, Inc. for the year 
                          ended December 31, 1995 and incorporated
                          herein by reference thereto

 13                       1995 Annual Report to Shareholders                N/A
                          of Horizon Bancorp, Inc. (filed as
                          Exhibit 13 to the Annual Report on
                          Form 10-K of Horizon Bancorp, Inc.
                          for the year ended December 31, 1995
                          and incorporated herein by reference
                          thereto).

 14                       Material foreign patents                          N/A

 15                       Letter re unaudited financial information         N/A

 16                       Letter re change in certifying accountants        N/A

 17                       Not required for S-4

 18                       Not required for S-4

 19                       Not required for S-4

 20                       Not required for S-4

 21                       Subsidiaries of Registrant (Incorporated          N/A
</TABLE>


                                   Part II-9
<PAGE>   172
<TABLE>
 <S>                      <C>                                                <C>
                          into this filing by reference to the Annual
                          Report on Form 10-K of Horizon
                          Bancorp, Inc. for the year ended
                          December 31, 1995).

 22                       Not Required for S-4

 23                       Consents:

 23.1                     Consent of Robinson & McElwee

 23.2                     Consent of Ernst & Young LLP

 23.3                     Consent of Diamond, Leftwich, Goheen & Dunn

 23.4                     Consent of The Robinson-Humphrey
                          Company, Inc.

 23.5                     Consent of Baxter Fentriss and Company

 24                       Power of attorney

 25                       Statement of eligibility of trustees               N/A

 26                       Invitations for competitive bids                   N/A

 27                       Financial Data Schedule                            N/A

 28                       Information from reports furnished to              N/A
                          state insurance regulatory authorities

 99                       Additional exhibits:

 99.1                     Form of Proxy for use by shareholders
                          of Twentieth Bancorp, Inc.

 99.2                     Form of Proxy for use by shareholders
                          of Horizon Bancorp, Inc.

<FN>

N/A = Not Applicable

</TABLE>


                                   Part II-10

<PAGE>   1
                                                                      EXHIBIT 5


                                 April 4, 1996


Horizon Bancorp, Inc.
One Park Avenue
Beckley, West Virginia 25802


                    RE:  FORM S-4 REGISTRATION STATEMENT

Gentlemen:

     This opinion is rendered in connection with the Form S-4 Registration
Statement (the "Registration Statement") filed by Horizon Bancorp, Inc. (the
"Registrant") with the Securities and Exchange Commission under the Securities
Act of 1933, as amended, with respect to the proposed offering of 1,818,000
shares of the registrant, $1.00 par value (the "Common Stock") issuable in
connection with the proposed merger of Twentieth Bancorp, Inc. ("Twentieth") a
West Virginia bank holding company, with and into Horizon Bancorp, Inc. pursuant
to the terms of the Plan of Merger and Reorganization by and between Twentieth
Bancorp, Inc. and Horizon Bancorp, Inc. dated February 6, 1996, and the related
merger documents, all of which are included in the Registration Statement.

     We are of the opinion that the common stock, when issued in connection with
the Plan of Merger and Reorganization in accordance with the terms set forth
therein, will be duly authorized, validly issued, fully paid and non-assessable.
Such shares will not be issued in violation of any preemptive rights of any
shareholders of the Registrant.

     We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and to the reference of our firm therein.

                                             Robinson & McElwee


                                             By: /s/ LYNN A. SMITH           
                                                 ---------------------------
                                                    Lynn A. Smith, Partner

LAS/ddk

<PAGE>   1
                                                                     EXHIBIT 8


                                 April 4, 1996


Horizon Bancorp, Inc.
One Park Avenue
Beckley, West Virginia 25802

Gentlemen:

     You have requested our opinion on certain federal income tax consequences
relating to the merger (the "Merger") of Twentieth Bancorp, Inc. ("Twentieth")
with and into Horizon Bancorp, Inc. ("Horizon").

     The relevant facts concerning the Merger are set forth in the Plan of
Merger and Reorganization executed by Horizon and Twentieth dated February 6,
1996.  A description of the transaction set forth therein is incorporated herein
by reference.

     In addition to the general statement of facts set forth in the Registration
Statement, and exhibits attached thereto, you have made the following
representations to us concerning the proposed transaction:

     1.      The fair market value of the Horizon stock and other consideration
to be received  by each shareholder of Twentieth will be approximately equal to
the fair market value of the Twentieth stock surrendered in exchange therefor.

     2.      There is no plan or intention by the shareholders of Twentieth who
own 1% or more of the Twentieth stock, and to the best of the knowledge of the
management of Twentieth there is no plan or intention on the part of the
remaining shareholders of Twentieth to sell, exchange  or otherwise dispose of a
number of Horizon stock received in the Merger that would reduce the Twentieth
shareholders' ownership of Horizon stock to a number of shares having a value,
as of the date of the Merger, of less than fifty percent (50%) of the value of
all of the formerly outstanding stock of Twentieth as of the same date.  For
purposes of this representation, shares of Twentieth exchanged for cash or other
property, surrendered by dissenting shareholders, or exchanged for cash in lieu
of fractional shares of Horizon stock  will be treated as outstanding Twentieth
stock on the date of the Merger.  Moreover, shares of Twentieth stock and shares
of Horizon stock held by Twentieth shareholders and otherwise sold, redeemed, or
disposed of prior or subsequent to the Merger will be considered in making this
representation.

     3.      Horizon has no plan or intention to reacquire any of its stock
issued in the Merger.

     4.      Horizon has no plan or intention to sell or otherwise dispose of
any of its assets or of any of the assets acquired from Twentieth, except for
dispositions made in the ordinary course of business or transfers described in
section 368(a)(2)(C) of the Internal Revenue Code.

     5.      The liabilities of Twentieth assumed by Horizon and the liabilities
to which the assets
<PAGE>   2
of Twentieth are subject, were incurred by Twentieth in the ordinary course of
its business.

     6.      Following the Merger, Horizon will continue the historic business
of Twentieth or use a significant portion of Twentieth's historic business
assets in a business.

     7.      Horizon, and the shareholders of Twentieth will pay their
respective expenses, if any, incurred in connection with the Merger.

     8.      There is no intercorporate indebtedness existing between Horizon
and Twentieth that was issued, acquired or will be settled at a discount.

     9.      No two parties to the transaction are investment companies as
defined in Section 368(a)(2)(F)(iii) and (iv) of the Internal Revenue Code.

     10.     In the Merger, shares of Twentieth stock representing control of
Twentieth, as defined in Section 368(c)(1) of the Internal Revenue Code, will be
exchanged solely for voting stock of Horizon.  For purposes of this
representation, shares of Twentieth stock exchanged for cash or other property
originating with Horizon will be treated as outstanding Twentieth stock on the
date of the Merger.

     11.     Twentieth is not under the jurisdiction of a court in a Title 11 or
similar case within the meaning of Section 368(a)(3)(A) of the Internal Revenue
Code.

     12.     On the date of the Merger, the fair market value of the assets of
Twentieth will equal or exceed the sum of its liabilities, plus the amount of
liabilities, if any, to which its assets are subject.

     13.     The payment of cash in lieu of fractional shares of Horizon stock
is solely for the purpose of avoiding the expense and inconvenience to Horizon
of issuing fractional shares and does not represent separately bargained for
consideration.  The total cash consideration that will be paid in the Merger to
the Twentieth shareholders instead of issuing fractional shares of Horizon will
not exceed 1% of the total consideration that will be issued in the Merger to
the Twentieth shareholders in exchange for their shares of Twentieth stock.  The
fractional share interests of each Twentieth shareholder will be aggregated, and
no Twentieth shareholder will receive cash in an amount equal to or greater than
the value of one full share of Horizon stock.

     14.     None of the compensation received by any shareholder-employee of
Twentieth will be separate consideration for, or allocable to any of their
shares of Twentieth  stock; none of the shares of Horizon' stock received by any
shareholder-employee will be separate consideration for or allocable to any
employment agreement; and the compensation paid to any shareholder-employee will
be for services actually rendered and will be commensurate with amounts paid to
third parties bargaining at arm's-length for similar services.

     Based solely upon the information submitted and on the representations set
forth above, we are of the opinion that:

     A.      The Merger will qualify as a tax-free reorganization within the
meaning of Section 368(a)(1)(A) of the Internal Revenue Code.
<PAGE>   3
     B.      The gain, if any, realized by a Twentieth shareholder upon receipt
of Horizon stock will be recognized, but not in an amount in excess of the cash
received as part of the Merger transaction.  Each Twentieth shareholder should
consult with his or her tax advisor with respect to the determination of the tax
treatment of the exchange.

     C.      The holding period of the Horizon stock to be received by the
shareholders of Twentieth will include the period during which the Twentieth
stock exchanged therefor was held, provided such stock was a capital asset in
the hands of the shareholder at the time of the effective date of the Merger.

     D.      Where solely cash is received by a dissenting shareholder of
Twentieth in exchange for his or her Twentieth stock, the cash payment will be
treated as received by the shareholder as a distribution in redemption of his or
her stock subject to the provisions and limitations of Sections 302 and 318 of
the Internal Revenue Code.

     E.      The receipt of cash in lieu of a fractional share of Horizon stock
will be treated as if the fractional share of Horizon stock was distributed as
part of the exchange to the Twentieth shareholder and then redeemed by Horizon,
resulting in capital gain or loss measured by the difference, if any, between
the amount of cash received for such fractional share and the shareholder's
basis in the fractional share.

     It should be noted that the opinions expressed in this letter are based
upon  statutory, judicial and administrative authority as of the date of this
opinion.  There can be no assurance that such authority will not be changed in
the future, or that such changes will not be made retroactively applicable to
the transactions considered herein.  Moreover, the above-stated opinions are
based upon the facts as we understand them and upon the representations provided
to us.  If the facts turn out to be different in any material respect from the
facts or representations stated herein, or if the laws or regulations applicable
to the proposed transactions are changed or reinterpreted by competent
tribunals, some or all of the opinions expressed in this letter may become
inapplicable.

     Please note further that Treas. Reg. Section 1.368-3 requires certain
records to be kept and information to be filed with the federal income tax
returns of each corporation which is a party to the reorganization.  This same
regulation requires each Twentieth shareholder who received Horizon shares in
connection with the reorganization, to attach to his or her federal income tax
return for the year in which such shares are received a statement disclosing the
exchange of Twentieth stock for shares of Horizon and reporting the cost or
other basis of the Twentieth stock given up and the number and value of Horizon
stock received.

     We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and to the reference of our firm in the Registration
Statement.

                                           Robinson & McElwee


                                           By: /s/ LYNN A. SMITH           
                                               ---------------------------
                                                  Lynn A. Smith, Partner


LAS/ddk

<PAGE>   1

                                                                   EXHIBIT 23.1

                               ROBINSON & MCELWEE


                                 April 4, 1996


Securities and Exchange Commission
450 Fifth Street, Northwest
Washington, D. C. 20549


                                RE:  CONSENT

Gentlemen:

     We hereby consent to the use of our name and the statements with respect to
us, as appearing under the heading "Experts" in the Registration Statement (Form
S-4) of Horizon Bancorp, Inc.


                             ROBINSON & MCELWEE

                             /s/ LYNN A. SMITH
                             --------------------------
                             Lynn A. Smith, Partner


LAS/ddk

<PAGE>   1
                                                                  EXHIBIT 23.2

Consent of Ernst & Young LLP


                        CONSENT OF INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-4, No. 333-      ) and the related Prospectus of
Horizon Bancorp, Inc. and Subsidiaries for the registration of 1,818,000 shares
of its common stock and to the incorporation by reference therein of our report
dated February 9, 1996, with respect to the consolidated financial statements of
Horizon Bancorp, Inc. and Subsidiaries incorporated by reference in its Annual
Report of Form 10-K for the year ended December 31, 1995, filed with the
Securities and Exchange Commission.

                                               /s/ ERNST & YOUNG LLP


Charleston, West Virginia
April 5, 1996

<PAGE>   1
                                                                    EXHIBIT 23.3


Consent of Diamond, Leftwich, Goheen & Dunn


                        CONSENT OF INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement Form S-4, and the related Prospectus of Horizon Bancorp,
Inc. and Subsidiaries for the registration of 1,818,000 shares of its common
stock and to the incorporation by reference therein of our report dated February
12, 1996, with respect to the consolidated financial statements of Twentieth
Bancorp, Inc. and Subsidiaries incorporated by reference in its Form 10-K for
the year ended December 31, 1995, filed with the Securities and Exchange
Commission.

                                         /s/ Diamond, Leftwich, Goheen & Dunn


Huntington, West Virginia
April 5, 1996

<PAGE>   1
                                                                    EXHIBIT 23.4


                 CONSENT OF THE ROBINSON-HUMPHREY COMPANY, INC.


     We consent to the inclusion in this Registration Statement on Form S-4 of
our opinion, dated February 6, 1996, as set forth as Appendix II to the Proxy
Statement/Prospectus and to the summarization thereof  in the Proxy
Statement/Prospectus under the caption "The Merger".  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.


                                        THE ROBINSON-HUMPHREY COMPANY, INC.

Atlanta, Georgia
February 6, 1996

<PAGE>   1
                                                                  EXHIBIT 23.5


                          BAXTER FENTRISS AND COMPANY


                         CONSENT OF FINANCIAL ADVISORS

We consent to the inclusion of our Fairness Opinion issued to Twentieth Bancorp,
Inc. in this registration statement on Form S-4.  We also consent to the
reference to our firm under the caption "Experts".


Baxter Fentriss and Company


Richmond, Virginia
February 6, 1996

<PAGE>   1
                                                                      EXHIBIT 24


                               POWER OF ATTORNEY


     KNOW ALL MEN BY THESE PRESENTS that the undersigned does hereby constitute
and appoint FRANK S. HARKINS, JR., E. M. PAYNE III and PHILIP L. MCLAUGHLIN and
each of them severally, the true and lawful agents and attorneys-in-fact (the
"Agents" and, severally, an "Agent") of the undersigned with full power to act,
upon the terms and conditions herein set forth, for an in the name, place and
stead of the undersigned in any way which the undersigned could do, if the
undersigned were personally present, to execute in their name, place and stead
(in any such capacity), all applications, certificates, letters, registration
statements, amendments to registration statements or other documents addressed
to or filed with the Securities and Exchange Commission which may be required in
connection with the registration under the Securities Act of 1933, as amended,
of the common stock of Horizon Bancorp, Inc., which may be issued to
shareholders of Twentieth Bancorp, Inc., under the Plan of Merger and
Reorganization dated as of February 6, 1996, by and between Horizon Bancorp,
Inc., and Twentieth Bancorp, Inc. and to file the same with the Securities and
Exchange Commission and other appropriate agencies or departments, each of said
attorneys and agents to have power to act with or without the other, and to have
full power and authority to do and perform in the name and on behalf of each of
the undersigned directors every act whatsoever necessary or advisable to be done
in the premises as fully and to all intents and purposes as the undersigned may
or could do in person.
<PAGE>   2


         Dated this 5th day of April, 1996.
         WITNESS the following signatures and seals:

/s/ JOHN M. ALDERSON, IV     (SEAL)          /s/ Philip L. McLaughlin    (SEAL)
- -----------------------------                ----------------------------
    John M. Alderson, IV                           Philip L. McLaughlin

/s/ PHILLIP W. CAIN          (SEAL)          /s/ HARPER W. NELSON        (SEAL)
- -----------------------------                ----------------------------
   Phillip W. Cain                               Harper W. Nelson


/s/ W. H. FILE, III          (SEAL)          /s/ RODNEY H. PACK          (SEAL)
- -----------------------------                ----------------------------
    W. H. File, III                              Rodney H. Pack


/s/ DAVID W. HAMBRICK        (SEAL)          /s/ E. M. PAYNE III         (SEAL)
- -----------------------------                ----------------------------
   David W. Hambrick                             E. M. Payne III


/s/ FRANK S. HARKINS, JR.    (SEAL)          /s/ R. T. ROGERS            (SEAL)
- -----------------------------                ----------------------------
   Frank S. Harkins, Jr.                         R. T. Rogers


                             (SEAL)          /s/ JAMES S. SONGER         (SEAL)
- -----------------------------                ----------------------------
   Tracy W. Hylton, II                           James S. Songer


/s/ WILLIAM E. KANE          (SEAL)          /s/ ALBERT M. TIECHE, JR.   (SEAL)
- -----------------------------                ----------------------------
   William E. Kane                               Albert M. Tieche, Jr.


/s/ ROBERT L. KOSNOSKI       (SEAL)          /s/ E. A. TUCKWILLER, JR.   (SEAL)
- -----------------------------                ----------------------------
   Robert L. Kosnoski                            E. A. Tuckwiller, Jr.


/s/ THOMAS E. LILLY          (SEAL)          /s/ EARL R. TURNER          (SEAL)
- -----------------------------                ----------------------------
   Thomas E. Lilly                               Earl R. Turner


/s/ CAROLYN H. MCCULLOCH     (SEAL)
- -----------------------------                
   Carolyn H. McCulloch

<PAGE>   1
                                                                   EXHIBIT 99.1


                  PROXY FOR SPECIAL MEETING ON AUGUST 13, 1996
                                        

TWENTIETH BANCORP, INC.                    THIS PROXY IS SOLICITED BY
1900 THIRD AVENUE                          MANAGEMENT AT THE DIRECTION OF
HUNTINGTON, WEST VIRGINIA 25703-0527       THE BOARD OF DIRECTORS OF 
                                           TWENTIETH BANCORP, INC. AND MAY
                                           BE REVOKED PRIOR TO ITS EXERCISE


     KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Shareholder of
Twentieth Bancorp, Inc. ("Twentieth"), Huntington, West Virginia, do hereby
nominate, constitute and appoint ______________ and _____________ or any one of
them, as my true and lawful attorney with full power of substitution, for me and
in my name, place and stead, to vote all the capital stock of said corporation
standing in my name on its books at the close of business on ___________, 1996
at the Special Meeting of Shareholders to be held August 13, 1996 at ____  p.m.,
Local Time, in the Third Floor Auditorium of The Twentieth Street Bank, 1900
Third Avenue, Huntington, West Virginia, or at any adjournment or adjournments
of said meeting, with all the powers the undersigned would possess if personally
present, as follows:

     1.       A proposal to approve and ratify the proposed merger of Twentieth
Bancorp, Inc. with and into Horizon Bancorp, Inc. ("Horizon") in accordance with
the terms and conditions of the Plan of Merger and Reorganization by and between
Twentieth and Horizon dated February 6, 1996.

           _____ FOR            _____ AGAINST           _____ ABSTAIN

     2.       Any other business which may properly be brought before the
              meeting or any adjournment thereof.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED BY THE
UNDERSIGNED.  IF NO SPECIFICATION IS MADE, THE SHARES REPRESENTED BY THIS PROXY
WILL BE VOTED "FOR" THE MERGER OF TWENTIETH BANCORP, INC. WITH AND INTO HORIZON
BANCORP, INC.  IF ANY OTHER BUSINESS IS PRESENTED AT SAID MEETING, THIS PROXY
SHALL BE VOTED IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE BOARD OF
DIRECTORS.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" PROPOSAL 1.

<PAGE>   2
THIS PROXY IS SOLICITED BY MANAGEMENT AT THE DIRECTION OF THE BOARD
OF DIRECTORS OF TWENTIETH BANCORP, INC.,  AND MAY BE REVOKED PRIOR TO ITS
EXERCISE.


                           Dated:  ________________________, 1996

                           ______________________________________
                           (Signature of Shareholder)

                           ______________________________________
                           (Signature of Shareholder)


                           When signing as attorney, executor,
                           administrator, trustee or guardian,
                           please give full title.  If more
                           than one trustee, all should sign.
                           ALL JOINT OWNERS MUST SIGN.  If a
                           corporation, please sign full
                           corporate name by President or other
                           authorized officer.  If a
                           partnership, please sign partnership
                           name by authorized person.

<PAGE>   1
                                                                   EXHIBIT 99.2

                  PROXY FOR ANNUAL MEETING ON AUGUST 14, 1996

HORIZON BANCORP, INC.                      THIS PROXY IS SOLICITED BY
P. O. BOX D                                MANAGEMENT AT THE DIRECTION OF
BECKLEY, WEST VIRGINIA 25802-2803          THE BOARD OF DIRECTORS OF
                                           HORIZON BANCORP, INC. AND MAY
                                           BE REVOKED PRIOR TO ITS EXERCISE

     KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned Shareholder of
Horizon Bancorp, Inc. ("Horizon"), Beckley, West Virginia, do hereby nominate,
constitute and appoint Carolyn H. McCulloch and Rodney H. Pack or any one of
them, as my true and lawful attorney with full power of substitution, for me and
in my name, place and stead, to vote all the capital stock of said corporation
standing in my name on its books at the close of business on ___________, 1996
at the Annual Meeting of Shareholders to be held August 14, 1996 at 4:00 p.m.,
Local Time, at The Greenbrier, White Sulphur Springs, West Virginia, or at any
adjournment or adjournments of said meeting, with all the powers the undersigned
would possess if personally present, as follows:

1.       Election of Directors
________    FOR ALL NOMINEES LISTED BELOW
________    WITHHOLD AUTHORITY TO VOTE FOR ALL NOMINEES LISTED BELOW
________    FOR ALL NOMINEES LISTED BELOW EXCEPT THOSE FOR WHOM I  CHOOSE
            TO WITHHOLD AUTHORITY TO VOTE AS INDICATED BELOW
            (INSTRUCTIONS: To withhold authority to vote for any
            individual nominee, write that name in the space provided.)
            _______________________________________________________________
            _______________________________________________________________

<TABLE>
<CAPTION>
     <S>                           <C>                            <C> 
      John M. Alderson, IV          Robert L. Kosnoski             E. M. Payne III
      Phillip W. Cain               Thomas E. Lilly                R. T. Rogers
      W. H. File, III               Carolyn H. McCulloch           James E. Songer
      David W. Hambrick             Philip L. McLaughlin           Albert M. Tieche, Jr.
      Frank S. Harkins, Jr.         Harper W. Nelson               E. A. Tuckwiller, Jr
      Tracy W. Hylton, II           Rodney H. Pack                 Earl R. Turner

</TABLE>

________  TO WITHHOLD POWER TO CUMULATE VOTES, CHECK HERE

2.       A proposal to amend the Articles of Incorporation by increasing the
         authorized capital stock from $5,000,000 being 5,000,000 shares of the
         par value of $1.00 each, to $20,000,000 being 20,000,000 shares of the
         par value of $1.00 each.

         _____ FOR            _____ AGAINST          _____ ABSTAIN

3.       A proposal to approve the appointment by the Board of Directors of
         Ernst & Young LLP as Independent Auditors for Horizon Bancorp, Inc. 
         for the year 1996.

         _____ FOR            _____ AGAINST          _____ ABSTAIN

<PAGE>   2
4.       A proposal to approve and ratify the proposed merger of Twentieth
         Bancorp, Inc. ("Twentieth") with and into Horizon in accordance with
         the terms and conditions of the Plan of Merger and Reorganization by
         and between Twentieth and Horizon dated February 6, 1996.

         _____ FOR            _____ AGAINST          _____ ABSTAIN


5.       Any other business which may properly be brought before the meeting or
         any adjournment thereof.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED BY THE
UNDERSIGNED.  IF NO SPECIFICATION IS MADE, THE SHARES REPRESENTED BY THIS PROXY
WILL BE VOTED "FOR" THE ELECTION OF ALL DIRECTOR NOMINEES, "FOR" THE CHARTER
AMENDMENT, "FOR" THE APPOINTMENT OF ERNST & YOUNG LLP AS INDEPENDENT CERTIFIED
PUBLIC ACCOUNTANTS FOR HORIZON BANCORP, INC., AND "FOR" THE MERGER OF TWENTIETH
BANCORP, INC. WITH AND INTO HORIZON BANCORP, INC.  IF ANY SHARES ARE VOTED
CUMULATIVELY FOR THE ELECTION OF DIRECTORS, THE PROXIES, UNLESS OTHERWISE
DIRECTED, SHALL HAVE FULL DISCRETION AND AUTHORITY TO CUMULATE THEIR VOTES AND
VOTE FOR LESS THAN ALL SUCH NOMINEES.  IF ANY OTHER BUSINESS IS PRESENTED AT
SAID MEETING, THIS PROXY SHALL BE VOTED IN ACCORDANCE WITH THE RECOMMENDATIONS
OF THE BOARD OF DIRECTORS.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" PROPOSALS 1, 2, 3 AND 4.

THIS PROXY IS SOLICITED BY MANAGEMENT AT THE DIRECTION OF THE BOARD OF
DIRECTORS OF HORIZON BANCORP, INC.  AND MAY BE REVOKED PRIOR TO ITS EXERCISE.

                      Dated:  ________________________, 1996

                      Number of persons who will attend the Annual Meeting: ____


(Label with           ---------------------------------------------  
name, address         (Signature of Shareholder)
and shares)
                      ---------------------------------------------  
                      (Signature of Shareholder)

                      When signing as attorney, executor,
                      administrator, trustee or guardian,
                      please give full title.  If more
                      than one trustee, all should sign.
                      ALL JOINT OWNERS MUST SIGN.  If a
                      corporation, please sign full
                      corporate name by President or other
                      authorized officer.  If a
                      partnership, please sign partnership
                      name by authorized person.


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