TRIANGLE BANCORP INC
S-4 POS, 1998-09-01
STATE COMMERCIAL BANKS
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  As filed with the Securities and Exchange Commission on September 1, 1998
                                                    Registration No. 333-57097
           --------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                           WASHINGTON, D. C. 20549
                      Post-Effective Amendment No. 2 to
                                   FORM S-4
                            REGISTRATION STATEMENT
                                    UNDER
                          THE SECURITIES ACT OF 1933
                               ----------------

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

          North Carolina
          (State or other                  6022
          jurisdiction of            (Primary Standard                56-1764546
         incorporation or               Industrial              (I.R.S. Employer
           organization)         Classification Code No.)    Identification No.)
                            -------------------------

                             4300 Glenwood Avenue
                        Raleigh, North Carolina 27612
                                (919) 881-0455
    (Address, including ZIP Code, and telephone number, including area code,
                  of registrant's principal executive offices)
                          -------------------------

   ALEXANDER M. DONALDSON, ESQ.
  General Counsel and Senior Vice                    GEORGE W. MURPHY, JR., ESQ.
             President                                Muldoon, Murphy & Faucette
      Triangle Bancorp, Inc.                                 Fifth Floor
       4300 Glenwood Avenue                         5101 Wisconsin Avenue, N. W.
   Raleigh, North Carolina 27612                       Washington, D. C. 20016
          (919) 881-0455             with copy to:          (202) 362-0840


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

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering.   [ ]

     If the securities being registered on this Form are being offered in
  connection with the formation of a holding company and there is compliance
              with General Instruction G, check the following box.
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                       CALCULATION OF REGISTRATION FEE

==================---------------------------------------------------------------------

Title of Each
Class of
Securities                           Proposed Maximum  Proposed Maximum    Amount of 
to be             Amount to be       Offering Price    Aggregate           Registration
Registered        Registered(1)      Per Share         Offering Price(2)   Fee (3)
=======================================================================================

Common Stock       3,652,842 Shares  Not Applicable    $25,825,593         $7,618.55
=======================================================================================
</TABLE>

      (1) This Post-Effective Amendment amends Registration Statement 333-57097
and related Registration Statement 333-61311 filed pursuant to Rule 462(b), and
covers (i) the maximum number of shares of common stock of the Registrant which
is expected to be issued in connection with the transaction and (ii) the maximum
number of shares of common stock reserved for issuance under various option
plans of United Federal Savings Bank, the obligations of which will be assumed
by the Registrant upon consummation of the transaction but which may be issued
prior to consummation of the transaction.
      (2) In accordance with Rule 457(f), the registration fee is based upon the
book value as of May 31, 1998 ($7.07) of a share of the common stock of United
Federal Savings Bank.
      (3) Previously paid.

<PAGE>




                            TRIANGLE BANCORP, INC.

            Cross-Reference Sheet Pursuant to Item 501 of Regulation S-K

Item of Form S-4
Caption in Prospectus/Proxy Statement Supplement

PART I - INFORMATION REQUIRED IN THE PROSPECTUS


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<S> <C>


A. INFORMATION ABOUT THE TRANSACTION                
                                                    
    1.   Forepart of Registration Statement and     
         Outside Front Cover Page of Prospectus     Facing Page of Registration     
                                                    Statement; Cross-Reference      
                                                    Sheet; Outside Front Cover Page 
                                                    of Prospectus                   
                                                    
    2.   Inside Front and Outside Back Cover
         Pages of Prospectus.................       Not applicable
    3.   Risk Factors, Ratio of Earnings to
         Fixed Charges and Other Information.       Not applicable

                                                    Additional Information
   4.    Terms of the Transaction............       Regarding the Merger; Appendix I

   5.    Pro Forma Financial Information.....       Not applicable


   6.    Material Contacts with the Company         Additional Information
         Being Acquired......................       Regarding the Merger

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

   8.    Interest of Named Experts and Counsel      Not applicable

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

B. INFORMATION ABOUT THE REGISTRANT

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

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

   12.   Information  with Respect to S-2 or S-3
         Registrants.........................       Not applicable

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

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



C. INFORMATION ABOUT THE COMPANY BEING ACQUIRED

   15.   Information   with   Respect   to   S-3
         Companies...........................       Not applicable
</TABLE>

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


   16.   Information  with Respect to S-2 or S-3
         Companies...........................       Not applicable

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


D. VOTING AND MANAGEMENT INFORMATION


                                                    
   18.   Information  if  Proxies,  Consents  or    
         Authorizations are to be Solicited..       Reconvened Special Meeting 
                                                    of United Federal          
                                                    Shareholders               
                                                    
   19.   Information if Proxies, Consents or Authorizations are not to be
         Solicited
         or in an Exchange Offer.............       Not applicable

                                       ii
</TABLE>

<PAGE>




                   [Letterhead of United Federal Savings Bank]

September 2, 1998

To the Shareholders of United Federal:

The Special Meeting of the Shareholders of United Federal to be held on
Thursday, September 10, 1998, will be adjourned and reconvened at the Carleton
House, 215 North Church Street, Rocky Mount, North Carolina at 2:00 p.m., local
time, on Wednesday, September 16, 1998.

At the reconvened Special Meeting, you will be asked to consider and vote on a
proposal to approve an Agreement and Plan of Reorganization and Merger, dated as
of March 4, 1998 and amended as of August 7, 1998 and September 1, 1998 (the
"Amended Agreement"), among United Federal, Triangle Bank and Triangle Bancorp,
Inc. ("Triangle"). You should have already received a Proxy Statement/
Prospectus dated August 7, 1998. The attached Proxy Statement/ Prospectus
Supplement describes the September Amendment, which fixes the exchange ratio in
the proposed merger at 1.098 shares of Triangle Common Stock for each issued and
outstanding share of United Federal Common Stock.

Enclosed are (i) the Proxy Statement/Prospectus Supplement, and (ii) a blue
proxy card for the reconvened Special Meeting. Please read the Supplement
together with the August 7 Proxy Statement/Prospectus carefully and consider
thoughtfully the information set forth in them.

The Board of Directors has unanimously approved the Amended Agreement, believes
that the Amended Agreement is in the best interest of United Federal and its
shareholders, employees, depositors, customers, suppliers and communities, and
unanimously recommends that you vote FOR approval of the Amended Agreement. The
Carson Medlin Company, United Federal's financial advisor, has advised the
United Federal Board of Directors that, in its opinion, as of September 1, 1998,
the aggregate consideration provided for in the Amended Agreement is fair to
United Federal's shareholders from a financial point of view.

Even if you have already voted, please vote again using the enclosed blue proxy
card. Any white proxy card previously executed will not be used for the
reconvened Special Meeting. Approval of the Amended Agreement requires the
affirmative vote of two-thirds of the votes entitled to be cast. Thus, failure
to vote will have the effect of a vote against the Amended Agreement.
Accordingly, whether or not you plan to attend the Special Meeting, I urge you
to complete, sign and return promptly the enclosed blue proxy card. Your broker
cannot vote for you. You may vote at the Special Meeting, even if you previously
have returned your proxy card. Your vote is of great importance. On behalf of
the Board of Directors, I urge you to vote FOR approval of the Amended Agreement
by marking the enclosed blue proxy card "FOR" Proposal 1.

                                          Sincerely,


                                          John A. Barker
                                          President and Chief Executive Officer



<PAGE>




                            PROSPECTUS SUPPLEMENT

                            TRIANGLE BANCORP, INC.

                            Up to 3,652,842 Shares
                          Common Stock, No Par Value
                          -------------------------

                          PROXY STATEMENT SUPPLEMENT

                     For Special Meeting of Shareholders
                         United Federal Savings Bank
                    to be reconvened on September 16, 1998


      This Supplement to the Prospectus, dated August 7, 1998, of Triangle
Bancorp, Inc. ("Triangle") relates to the shares of common stock of Triangle
("Triangle Stock"), that are issuable to the shareholders of United Federal
Savings Bank ("United Federal") upon consummation of the proposed merger (the
"Merger") pursuant to which each outstanding share of United Federal Common
Stock ("United Federal Stock") will be converted into 1.098 shares (the
"Exchange Rate") of Triangle Stock, subject to adjustment, pursuant to the terms
of an Agreement and Plan of Reorganization and Merger, dated as of March 4, 1998
and amended as of August 7, 1998 and September 1, 1998, and the related Plan of
Merger (collectively, the "Amended Agreement"), by and among Triangle, Triangle
Bank and United Federal. A copy of the September Amendment, which eliminated (1)
adjustments to the Exchange Rate based upon the market price of Triangle Stock,
(2) adjustments to the Exchange Rate based on United Federal's loan charge-offs,
non-performing assets and loan loss reserve, and (3) the parties' ability to
terminate the Amended Agreement based on the market price of Triangle Stock, is
attached hereto as Appendix I.

      This Prospectus Supplement also serves as the United Federal Proxy
Statement Supplement and is being furnished by United Federal in connection with
the solicitation of proxies to be used at the United Federal Special Meeting of
Shareholders to be reconvened on Wednesday, September 16, 1998.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION, THE OFFICE OF THRIFT SUPERVISION ("OTS"), ANY STATE
SECURITIES COMMISSION, OR THE FEDERAL DEPOSIT INSURANCE CORPORATION ("FDIC") NOR
HAS THE COMMISSION, ANY STATE SECURITIES COMMISSION, THE OTS OR THE FDIC PASSED
UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS/PROXY STATEMENT. ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

      This Proxy Statement/Prospectus Supplement is dated September 1, 1998 and
is being mailed to the shareholders of United Federal on or about September 3,
1998.


<PAGE>



      No person is authorized to give any information or to make any
representation other than those contained in the Proxy Statement/Prospectus
dated August 7, 1998 as supplemented hereby, and, if given or made, such
information or representation should not be relied upon as having been
authorized by Triangle or United Federal. This Proxy Statement/Prospectus
Supplement does not constitute an offer to sell, or a solicitation of an offer
to purchase, in any jurisdiction in which such offer is not authorized or to or
from any person to whom it is unlawful to make such offer or solicitation. The
information contained or incorporated by reference in this Proxy
Statement/Prospectus Supplement regarding Triangle has been furnished by
Triangle and the information contained or incorporated by reference in this
Proxy Statement/Prospectus Supplement regarding United Federal has been
furnished by United Federal. Neither the delivery of this Proxy
Statement/Prospectus Supplement nor any distribution of the securities being
offered hereunder shall, under any circumstances, create any implication that
there has been no change in the affairs of Triangle or United Federal since the
date of this Proxy Statement/Prospectus Supplement or the information contained
herein or in the documents incorporated herein by reference is correct as of
anytime subsequent to the date hereof.

      THE SHARES OF TRIANGLE STOCK BEING OFFERED TO UNITED FEDERAL'S
SHAREHOLDERS ARE NOT DEPOSITS OF ANY BANK OR OTHER FINANCIAL INSTITUTION AND
ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER
GOVERNMENT AGENCY.
                            ----------------------


      Defined terms used in the Proxy Statement/Prospectus Supplement shall have
the same meaning as set forth in the Proxy Statement/Prospectus dated August 7,
1998.


                                       2

<PAGE>



          RECONVENED SPECIAL MEETING OF UNITED FEDERAL SHAREHOLDERS

     This Proxy Statement/Prospectus Supplement is being furnished to
shareholders of record of United Federal Stock as of the close of business on
July 27, 1998, in connection with the solicitation of proxies by the United
Federal Board for use at the United Federal Special Meeting originally scheduled
for September 10, 1998, which Special Meeting will be adjourned and reconvened
on Wednesday, September 16, 1998, at 2:00 p.m., local time, at the Carleton
House, 215 North Church Street, Rocky Mount, North Carolina, and at any
adjournments thereof to consider and take action upon (1) a proposal to approve
the Amended Agreement, and (2) such other business as may properly come before
the United Federal Special Meeting. Each copy of this Proxy Statement/Prospectus
Supplement being furnished to the holders of record of United Federal Stock is
accompanied by a blue form of proxy for use at the United Federal Special
Meeting.

      Any white proxy previously executed will not be used for the reconvened
Special Meeting.

EVEN IF YOU ALREADY VOTED, PLEASE COMPLETE, DATE, AND SIGN THE ACCOMPANYING BLUE
PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.

Solicitation of Proxies

      Proxies may be solicited by the directors, officers and employees of
United Federal by mail, in person or by telephone or telegraph. Such persons
will receive no additional compensation for such services. In addition, United
Federal has retained Corporate Investor Communications, Carlstadt, New Jersey,
to solicit proxies for a fee of approximately $10,000, plus out-of-pocket
expenses. United Federal may make arrangements with brokerage firms and other
custodians, nominees, and fiduciaries, if any, for the forwarding of
solicitation materials to the beneficial owners of United Federal Stock held of
record by such persons. Any such brokers, custodians, nominees, and fiduciaries
will be reimbursed for the reasonable out-of-pocket expenses incurred by them
for such services. Except under certain circumstances involving a wrongful
breach or termination of the Agreement by Triangle, United Federal will pay all
expenses of its solicitation of proxies and of holding the United Federal
Special Meeting.


                 ADDITIONAL INFORMATION REGARDING THE MERGER

      This Proxy Statement/Prospectus Supplement updates certain portions of the
August 7, 1998 Proxy Statement/Prospectus. In doing so, this Supplement
describes certain of the important terms and conditions of Amendment No. 2,
dated September 1, 1998 (the "September Amendment"), to the Agreement and Plan
of Reorganization and Merger dated March 4, 1998, as amended as of August 7,
1998 (such Agreement, as amended August 7, 1998, the "Original Agreement"). This
description does not purport to be complete and is qualified in its entirety by
reference to the September Amendment and the updated United Federal Fairness
Opinion, both of which are attached hereto as Appendices to this Proxy
Statement/Prospectus Supplement. United Federal shareholders are urged to read
these materials in their entirety and in conjunction with the August 7 Proxy
Statement/Prospectus and the materials distributed with it.

                                       3

<PAGE>

TERMS OF THE MERGER

      EXCHANGE RATE. The Original Agreement provided for an Exchange Rate of
0.945, subject to adjustment based on, among other things, the Average Closing
Price. Under the Original Agreement: if the Average Closing Price was between
$25.51 and $28.00, the Exchange Rate would have decreased to provide a value of
not more than $24.11 for each share of United Federal Stock; if the Average
Closing Price was between $18.67 and $21.17, the Exchange Rate would have
increased to provide a value of not less than $20.00 for each share of United
Federal Stock; if the Average Closing Price was between $18.66 and $17.25, the
Exchange Rate would have been 1.071; and if the Average Closing Price was less
than $17.25, the Exchange Rate would have increased to provide a value of not
less than $18.47 per share of United Federal Stock, provided that Triangle or
United Federal could terminate the Agreement and abandon the Merger if the
Average Closing Price was more than $28.00 or less than $16.82.

      As of August 28, 1998, the closing price of Triangle Stock was $15.6875
and the Average Closing Price was $17.622.

      In response to the significant decline in the market price of most
publicly traded securities, including Triangle Stock, in late August 1998,
United Federal and Triangle negotiated and signed the September Amendment. The
September Amendment (a) fixes the Exchange Rate at 1.098, and (b) eliminates (1)
adjustments to the Exchange Rate based upon the market price of Triangle Stock,
(2) adjustments to the Exchange Rate based on United Federal's loan charge-offs,
non-performing assets and loan loss reserve, and (3) the parties' ability to
terminate the Amended Agreement based on the market price of Triangle Stock.

      REQUIRED REGULATORY APPROVALS.  The Merger and the transactions
contemplated by the Agreement are contingent upon receipt of the following
approvals:

      Federal Reserve. The Merger is subject to the approval of the Federal
Reserve under the Bank Merger Act, which prohibits the merger or consolidation
of any bank holding company or Federal Reserve member bank with any other bank
holding company or depository institution without Federal Reserve approval. The
Federal Reserve approved Triangle's application in June 1998. The amended price
structure contained in the September Amendment was filed by Triangle with the
Federal Reserve on August 31, 1998 and Triangle has no reason to believe that
the Federal Reserve will revoke its approval.

      North Carolina Commissioner of Banks. Because Triangle is a North
Carolina-chartered commercial bank, the merger of United Federal into Triangle
Bank is subject to the approval of the Commissioner. North Carolina law
prohibits the merger or consolidation of any state bank with any other
depository institution without the approval of the Commissioner. In July 1988,
the Commissioner approved, and the North Carolina Banking Commission ratified,
Triangle's application. The amended price structure contained in the September
Amendment was filed by Triangle with the Commissioner on August 31, 1998 and
Triangle has no reason to believe that the Commissioner will revoke his
approval.

                                       4
<PAGE>

      TERMINATION OF THE AMENDED AGREEMENT. The Amended Agreement may be
terminated and the Merger abandoned at any time prior to the Effective Time,
whether before or after approval by United Federal's shareholders, upon the
mutual agreement of Triangle and United Federal, and may be terminated by either
Triangle or United Federal if, among other things: (i) the Average Closing Price
of Triangle Stock is greater than $28.00 (for the 20 trading days ending August
28, 1998, the Average Closing Price of Triangle Stock was $17.622); (ii) the
other party shall have violated or failed to perform fully any of its
obligations, covenants or agreements in any material respect; (iii) any of the
other party's representations or warranties shall have been false or misleading
in any material respect when made, or if there has occurred any event or
development or 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; (iv) United Federal's shareholders
fail to ratify and approve the Amended Agreement; or (v) any condition to the
obligations of the terminating party is not satisfied or effectively waived, or
the Merger has not become effective by December 31, 1998 (or such later date as
shall be mutually agreeable to Triangle and United Federal).

ADDITIONAL BACKGROUND OF AND REASONS FOR THE MERGER

      BACKGROUND

      The market price of most publicly traded securities declined
significantly, as did the price of Triangle Stock, in late August 1998. On
August 28, 1998, the closing price of Triangle Stock was $15.6875. If the price
of Triangle Stock were to remain at that level for an extended period of time
before the Merger, the Average Closing Price could be less than $16.82, which
would be grounds for termination of the Original Agreement. As a result, on
August 28, 1998, management of Triangle proposed a revised pricing structure to
management of United Federal. Negotiations continued through September 1, 1998,
on which date the United Federal Board, in consultation with Carson Medlin,
approved the September Amendment.

      REASONS FOR THE MERGER

      United Federal. In reaching its determination that the Amended Agreement
is in the best interests of United Federal's shareholders, United Federal's
Board considered a number of factors. Following is a summary of the material
factors considered by United Federal's Board:

      (i)   The familiarity of United Federal's Board with United Federal's
            business, operations, financial condition, earnings and prospects;

      (ii)  The current and prospective economic and competitive environment
            facing United Federal and the range of possible values available to
            United Federal's shareholders in light of the recent stock market
            decline, including the timing and likelihood of actually receiving
            those values;

      (iii) The financial presentation of Carson Medlin, United Federal's
            independent 


                                       5
<PAGE>

            financial advisor, and the opinion of Carson Medlin
            that, as of the date of such opinion, the Exchange Ratio is fair
            from a financial point of view to the shareholders of United
            Federal;

      (iv)  The business, operations, financial condition, earnings and
            prospects of Triangle;

      (v)   The fact that consummation of the Merger is not conditioned upon
            Triangle obtaining the financing for its acquisition of United
            Federal;

      (vi)  The Board's evaluation of the risks to consummation of the Merger,
            including the risks associated with obtaining all necessary
            regulatory approvals without the imposition of terms or conditions
            which could be materially burdensome to Triangle;

      (vii) The terms of the Amended Agreement and the Option Agreement executed
            in connection with it; and

      (viii)The nature and quality of the consideration to be received in the
            Merger permitting shareholders to defer any tax liability associated
            with the increase in value of their stock and permitting
            shareholders to become shareholders of Triangle, an institution with
            strong operations, management and earnings and a liquid stock.

      Because of the wide variety of factors considered in connection with its
evaluation of the Merger, United Federal's Board did not find it practical to,
and did not, quantify or otherwise attempt to assign relative weights to the
specific factors considered in reaching its determination.

RECOMMENDATION OF THE UNITED FEDERAL BOARD OF DIRECTORS

      FOR THE REASONS DESCRIBED ABOVE, THE UNITED FEDERAL BOARD OF DIRECTORS
UNANIMOUSLY RECOMMENDS THAT THE SHAREHOLDERS OF UNITED FEDERAL VOTE FOR APPROVAL
OF THE AMENDED AGREEMENT.

UPDATED OPINION OF UNITED FEDERAL'S FINANCIAL ADVISOR

      Pursuant to an engagement letter dated December 30, 1997, and amended on
August 28, 1998, United Federal retained Carson Medlin to serve as its financial
advisor with respect to a proposed transaction which would lead to the merger of
United Federal into or the purchase of substantially all of the stock or assets
of United Federal by one of certain potential acquiring financial institutions.
As part of its engagement, Carson Medlin agreed to render its opinion as to the
fairness, from a financial point of view, of the terms of such a transaction to
United Federal's unaffiliated shareholders. Carson Medlin is a National
Association of Securities Dealers, Inc. member investment banking firm which
specializes in the securities of southeastern United States financial
institutions. As part of its investment banking activities, Carson Medlin is
regularly engaged in the valuation of southeastern United States financial
institutions and 


                                       6
<PAGE>


transactions relating to their securities, including mergers and acquisitions.
Carson Medlin will receive $95,000 for its services. United Federal also has
agreed to reimburse Carson Medlin for its out-of-pocket expenses incurred in
connection with the activities contemplated by its engagement, regardless of
whether the Merger is consummated. United Federal has further agreed to
indemnify Carson Medlin against certain liabilities, including certain
liabilities under federal securities laws. The payment of the above fees is not
contingent upon Carson Medlin rendering a favorable opinion with respect to the
Merger.

      Carson Medlin rendered its verbal opinion to United Federal on March 4,
1998 that the aggregate consideration to be received in the Merger is fair to
United Federal's unaffiliated shareholders from a financial point of view. After
execution of the August 7, 1998 amendment to the Agreement, Carson Medlin
confirmed such opinion in writing as of August 7, 1998. After the execution of
the September Amendment, Carson Medlin reviewed the terms of the transaction and
delivered its written opinion to the Board that the terms of the transaction,
based on the revised Exchange Rate, are fair as of September 1, 1998. The full
text of Carson Medlin's written opinion dated August 7, 1998, was attached as
Appendix II to the Proxy Statement/Prospectus dated August 7, 1998, and the full
text of Carson Medlin's written opinion dated September 1, 1998 is attached as
Appendix II to this Proxy Statement/Prospectus Supplement and should be read in
its entirety with respect to the procedures followed, assumptions made, matters
considered and qualifications of and limitations on the review undertaken by
Carson Medlin in connection therewith. Carson Medlin's opinion does not
constitute a recommendation to any United Federal shareholder as to how such
shareholder should vote on the Agreement and the Merger or as to any other
matter. The summary of the opinion of Carson Medlin set forth in this Proxy
Statement/Prospectus Supplement is qualified in its entirety by reference to the
full text of such opinion attached hereto as Appendix II.

      Carson Medlin has relied upon, without independent verification, the
accuracy and completeness of the information reviewed by it for the purpose of
rendering its opinion. Carson Medlin did not undertake any independent
evaluation or appraisal of the assets and liabilities of United Federal or
Triangle, nor was it furnished with any such appraisals. Carson Medlin assumed
that the financial forecasts reviewed by it have been reasonably prepared on a
basis reflecting the best currently available judgments and estimates of the
managements of United Federal and Triangle, and that such projected financial
results will be realized in the amounts and at the times contemplated thereby.

      Carson Medlin is not expert in the evaluation of loan portfolios,
underperforming or nonperforming assets, net charge-offs of such assets or the
adequacy of allowances for losses with respect thereto; has not reviewed any
individual credit files; and has assumed that the loan loss allowances for each
of United Federal and Triangle are in the aggregate adequate to cover such
losses. Carson Medlin is not expert in bank operations and has not examined the
data processing or other systems of either United Federal or Triangle with
respect to their readiness to satisfy requirements specific to the year 2000 or
to similar issues. Carson Medlin assumed that the Merger will be recorded as a
pooling-of-interests under generally accepted accounting principles. Carson
Medlin's opinion is necessarily based on economic, market and other conditions
as in effect on the date of its analysis, and on information made available to
it dated as of various earlier dates.

                                       7
<PAGE>

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

      In connection with rendering its opinion dated September 1, 1998, Carson
Medlin reviewed: (i) the Amended Agreement; (ii) the annual reports to
shareholders of United Federal, including audited financial statements for the
five years ended December 31, 1997; (iii) the Proxy Statement of United Federal
dated April 10, 1998 for the annual meeting of shareholders held on May 28,
1998; (iv) the annual report on Form 10-K of United Federal for the year ended
December 31, 1997; (v) the quarterly reports on Form 10-Q of United Federal for
the quarters ended March 31 and June 30, 1998; (vi) the Thrift Financial Report
of United Federal as of March 31, 1998; (vii) the Uniform Thrift Performance
Report for United Federal as of December 31, 1997; (viii) the annual reports to
shareholders of Triangle, including audited financial statements for the five
years ended December 31, 1997; (ix) the annual report on Form 10-K of Triangle
for the year ended December 31, 1997; (x) the Proxy Statement of Triangle dated
March 20, 1998 for the annual meeting of shareholders held on April 28, 1998;
(xi) the quarterly reports on Form 10-Q of Triangle for the quarters ended March
31 and June 30, 1998; (xii) the Consolidated Report of Condition and Income of
Triangle Bank as of March 31, 1998; (xiii) the Uniform Bank Performance Report
for Triangle Bank as of December 31, 1997; (xiv) a copy of the Proxy
Statement/Prospectus prepared for the special meeting of the shareholders of
Guaranty State Bancorp to consider the merger with Triangle; (xv) the
consolidated financial statements of Guaranty State Bancorp, including audited
financial statements for the year ended December 31, 1996; (xvi) the annual
report on Form 10-K of Guaranty State Bancorp for the year ended December 31,
1997; (xvii) unaudited interim financial statements of Guaranty State Bancorp as
of March 31, 1998; (xviii) the Uniform Bank Performance Report for Guaranty
State Bank as of December 31, 1997; (xix) the Proxy Statement/Prospectus dated
August 7, 1998 and a preliminary copy of this Proxy Statement/Prospectus
Supplement; and (xx) certain other financial and operating information with
respect to the business, operations and prospects of United Federal and
Triangle.

      Carson Medlin also (i) held discussions with members of the senior
management of United Federal and Triangle; (ii) reviewed the historical market
prices and trading activity for the



                                       8
<PAGE>

common stocks of United Federal and Triangle and compared them with those of
certain publicly traded companies which it deemed to be relevant; (iii) compared
the results of operations of United Federal and Triangle with those of certain
publicly traded companies which it deemed to be relevant; (iv) compared the
proposed financial terms of the Merger with the financial terms, to the extent
publicly available, of certain other recent business combinations of commercial
banking and thrift organizations; (v) analyzed the pro forma financial impact of
the Merger on Triangle; and (vi) conducted such other studies, analyses,
inquiries and examinations as Carson Medlin deemed appropriate.

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

      SUMMARY OF TRANSACTION CONSIDERATION. Carson Medlin reviewed the terms of
the Merger, including the Exchange Rate and the aggregate transaction value.
Carson Medlin reviewed the implied value of the consideration offered based upon
the closing price of Triangle Stock on August 27, 1998 which was $17.50 per
share of United Federal Stock, or a total transaction value of approximately
$58.2 million (including outstanding options to purchase United Federal Stock).
Carson Medlin calculated that the value of the consideration to United Federal
shareholders, based on the closing price of Triangle Stock on August 27, 1998,
represented 249% of United Federal's stated book value at June 30, 1998, 32.3
times United Federal's diluted earnings per share for the year ended December
31, 1997, and 33.3 times United Federal's diluted earnings per share for the
trailing 12 months ended June 30, 1998. Carson Medlin calculated that the total
transaction value (including options to purchase United Federal Stock)
represented a 15.9% premium on United Federal's June 30, 1998 core deposits
(defined as the aggregate transaction value minus stated book value, as a
percentage of core deposits) and 19.3% of the total assets of United Federal at
June 30, 1998.

      COMPARABLE TRANSACTION ANALYSIS. Carson Medlin reviewed certain
information relating to 15 selected southeastern thrift mergers announced in
1997 in which the acquired institutions had total assets of from $53 million to
$2.8 billion (the "Comparable Transactions"). The Comparable Transactions are
(acquiree/acquiror): Lowcountry Savings Bank, Inc./Carolina First Corporation;
Anchor Savings Bank, FSB/P.C.B. Bancorp, Inc.; American Federal Bank, FSB/CCB
Financial Corporation; F.F.O. Financial Group, Inc./Republic Bancshares, Inc.;
Seaboard Savings Bank, FSB/1st United Bancorp; Virginia First Financial
Corporation/BB&T Corporation; GF Bancshares, Inc./Regions Financial Corporation;
Home Savings Bank of Siler City, Inc., SSB/FNB Corp.; Investors Savings Bank of
South Carolina, Inc./First Financial Holdings, Inc.; ASB Bank Shares,
Inc./Colonial BancGroup, Inc.; First Southeast Financial Corporation/Carolina
First Corporation; Consumers Bancorp, Inc./BankUnited Financial Corp; Palfed,
Inc./Regions Financial Corporation; Life Bancorp, Inc./BB&T Corporation; and
FFVA Financial Corp./One Valley Bancorp., Inc. Carson Medlin considered, among
other factors, the earnings, capital level, asset size and quality of assets of
the acquired financial institutions. Carson Medlin compared the transaction
prices to the then recently reported annual earnings, stated book values, total
assets and core deposits.


                                       9
<PAGE>

      Carson Medlin calculated a range of acquisition prices as a percentage of
stated book value for the Comparable Transactions from a low of 136% to a high
of 306%, with a mean of 200%. These transactions indicated a range of values for
each share of United Federal Stock from $9.70 per share to $21.82 per share,
with a mean of $14.26 per share (based on United Federal's stated book value of
$7.13 per share at June 30, 1998). The value of the transaction, $17.50 per
share of United Federal Stock (based on the price of Triangle Stock on August
27, 1998), is above the mean for the Comparable Transactions.

      Carson Medlin calculated a range of purchase prices as a multiple of
earnings for the Comparable Transactions (excluding those transactions involving
acquired thrifts with returns on assets of less than 0.50%) from a low of 13.5
times to a high of 34.1 times, with a mean of 22.5 times. These transactions
indicated a range of values for each share of United Federal Stock from $7.56
per share to $19.10 per share, with a mean of $12.60 per share (based on United
Federal's diluted earnings per common share for the 12 months ended June 30,
1998 of $0.56). The value of the transaction is an indicated $17.50 per share of
United Federal Stock, which is above the mean for the Comparable Transactions.

      Carson Medlin calculated the core deposit premiums for the Comparable
Transactions and found a range of values from a low of 4.9% to a high of 35.2%,
with a mean of 14.5%. The premium on United Federal's core deposits implied by
the terms of the Agreement is 15.9%, which is above the mean for the Comparable
Transactions.

      Finally, Carson Medlin calculated a range of purchase prices as a
percentage of total assets for the Comparable Transactions from a low of 10.4%
to a high of 36.0%, with a mean of 19.2%. The aggregate consideration as a
percentage of total assets implied by the terms of the Agreement is
approximately 19.3%, which is slightly above the mean for the Comparable
Transactions.

      Industry Comparative Analysis. In connection with rendering its opinion,
Carson Medlin compared selected operating results of United Federal to those of
15 publicly-traded thrifts in Alabama, Florida, Georgia, North Carolina, South
Carolina and Virginia (the "STR Institutions") as contained in the Southeastern
Thrift Review(TM), a proprietary research publication prepared by Carson Medlin
quarterly since 1994. The STR Institutions range in asset size from
approximately $137 million to $1.8 billion and in shareholders' equity from
approximately $17 million to $116 million. Carson Medlin considers this group of
financial institutions to be generally comparable to United Federal. Carson
Medlin compared, among other factors, the profitability, capitalization, and
asset quality of United Federal to those of the STR Institutions. Carson Medlin
noted that for the quarter ended December 31, 1997: (i) United Federal had a
return on average assets (ROA) of 0.64% compared to 0.78% on average for the STR
Institutions; (ii) United Federal had a return on average equity (ROE) of 8.7%
compared to 8.6% on average for the STR Institutions; (iii) United Federal had
common equity to total assets of 7.2% compared to 9.5% on average for the STR
Institutions; and (iv) United Federal's non-performing assets ratio (defined as
loans 90 days past due, nonaccrual loans and other real estate to total loans
and other real estate) was 0.63% compared to 0.74% on average for the STR
Institutions.

                                       10
<PAGE>

      Carson Medlin also compared selected operating results of Triangle to
those of 50 publicly-traded community commercial banks in Alabama, Florida,
Georgia, Mississippi, North Carolina, South Carolina, Virginia and West Virginia
(the "SIBR Banks") as contained in the Southeastern Independent Bank Review(TM),
a proprietary research publication prepared by Carson Medlin quarterly since
1991. The SIBR Banks range in asset size from approximately $124.5 million to
$2.5 billion and in shareholders' equity from approximately $13 million to $248
million. Carson Medlin considers this group of financial institutions to be
generally comparable to Triangle. Carson Medlin compared, among other factors,
the profitability, capitalization, and asset quality of Triangle to those of the
SIBR Banks. Carson Medlin noted that for the year ended December 31, 1997: (i)
Triangle had a return on average assets (ROA) of 1.20% compared to 1.25% on
average for the SIBR Banks; (ii) Triangle had a return on average equity (ROE)
of 14.5% compared to 12.5% on average for the SIBR Banks; (iii) Triangle had
common equity to total assets of 7.42% compared to 9.93% on average for the SIBR
Banks; and (iv) Triangle's non-performing assets ratio (defined as loans 90 days
past due, nonaccrual loans and other real estate to total loans and other real
estate) was 0.67% compared to 0.92% on average for the SIBR Banks.

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

      CONTRIBUTION ANALYSIS. Carson Medlin reviewed the relative contributions
in terms of various balance sheet items, net income and market capitalization to
be made by United Federal and Triangle (pro forma adjusted for Triangle's merger
with Guaranty State Bancorp) to the combined institution based on (i) balance
sheet data at June 30, 1998, (ii) income statement data for the year ended
December 31, 1997, and (iii) projected 1998 net income excluding expenses
related to the Merger and related cost savings. The income statement and balance
sheet components analyzed included total assets, loans (net of unearned income
and the allowance for loan and lease losses), total deposits, shareholders'
equity, core income (defined as income before taxes, nonrecurring gains and
expenses and amortization of core deposit intangibles and goodwill), and net
income. This analysis showed that, while United Federal's shareholders and
optionholders would own approximately 13.6% of the aggregate outstanding shares
and options of the combined institution based on the Exchange Rate of 1.098,
United Federal is contributing 15.3% of total assets, 19.5% of total net loans
(net of unearned income and the allowance for loan and lease losses), 16.6% of
total deposits, 14.7% of shareholders' equity, 9.7% of 1997 core income, 9.2% of
1997 net income, and 9.3% of projected 1998 net income excluding expenses
related to the Merger and related cost savings. For some of the financial
components, United Federal is contributing a higher proportion than the
percentage of ownership that United Federal's shareholders and optionholders are
receiving in the Merger; for other components, United Federal is contributing
less than its shareholders and optionholders are receiving.

                                       11
<PAGE>

      PRESENT VALUE ANALYSIS. Carson Medlin calculated the present value of
United Federal Stock assuming that United Federal remains an independent
institution. For purposes of this analysis, Carson Medlin utilized certain
projections of United Federal's future earnings through the year 2002. The
analysis assumes that United Federal would continue to pay a dividend and that
in 1998 and each year thereafter the dividend would be approximately equal to
36% of projected net income and that United Federal would be acquired at the end
of 2002 at a purchase price of 260% of projected book value (adjusted for the
exercise in the fifth year of all currently outstanding options). The present
value of the annual dividends plus the merger consideration at the end of 2002
was then calculated using discount rates of 13% through 15% per annum. These
discount rates were selected to reflect the rates that investors in securities
such as United Federal Stock might be expected to require in order to be
competitive with alternative investments with similar characteristics. On the
basis of these assumptions, Carson Medlin calculated that the present value to
the shareholders of United Federal Stock ranged from $13.06 to $14.26 per share.
The consideration implied by the terms of the Agreement is $17.50 per share
(based on the closing price of Triangle Stock on August 27, 1998) which is above
the high end of the range of the calculated present values were United Federal
to remain independent through 2002. Carson Medlin considered the present value
analysis because it is a widely used valuation methodology, but noted that the
results of such methodology are highly dependent upon the numerous assumptions
that must be made, including earnings growth rates, dividend payout rates,
terminal values and discount rates.

      STOCK TRADING HISTORY. Carson Medlin reviewed and analyzed the historical
trading prices and volumes for Triangle Stock from December 1994 to August 1998.
Carson Medlin also compared performance of Triangle Stock to the Dow Jones
Southeastern U.S. Banks Index and the Dow Jones Equity Market Index and reviewed
the trading history of Triangle Stock and compared it to the trading history of
the SIBR Banks over the previous 12 months.

      For the two-year period ended August 28, 1998, the annual return for
Triangle Stock (all cash distributions and dividends reinvested on the
ex-dividend date) was approximately 32% compared to 31% for the Dow Jones
Southeastern U.S. Banks Index and 26% for the Dow Jones Equity Market Index. For
the one-year period ended August 28, 1998, the annual return for Triangle Stock
(all cash distributions and dividends reinvested on the ex-dividend date) was
approximately 3% compared to 9% for the Dow Jones Southeastern U.S. Banks Index
and 14% for the Dow Jones Equity Market Index.

      For the four quarters ended June 30, 1998, the ratio of stock price to
trailing 12 months earnings per share (at quarter end) for the SIBR Banks was: a
low of 15.9 times, a high of 19.9 times, and a mean of 18.1 times. For the same
periods, Triangle's price to earnings ratio ranged from a low of 24.0 times to a
high of 27.3 times with a mean of 25.2 times. Triangle Stock has traded on
average at a higher price to earnings ratio than the SIBR Banks.

      For the four quarters ended June 30, 1998, the stock price as a percentage
of book value (at quarter end) for the SIBR Banks was: a low of 229%, a high of
268%, and a mean of 253%. For the same periods, Triangle's price to book ratio
ranged from a low of 331% to a high of 


                                       12
<PAGE>

393% with a mean of 351%. Triangle Stock has traded on average at a higher price
to book value ratio compared to the SIBR Banks.

      Carson Medlin also examined the recent trading volume in Triangle Stock,
which began trading on the New York Stock Exchange on December 31, 1997. Before
that time Triangle Stock traded on the Nasdaq National Market System. Carson
Medlin considers Triangle Stock to be liquid and marketable.

      Carson Medlin also examined recent trading prices and volumes of United
Federal Stock, which trades on the Nasdaq Small-Cap Market. Carson Medlin
considered, but assigned little weight to, the market price of United Federal
Stock in its analysis.

      SHAREHOLDER CLAIMS ANALYSIS. Carson Medlin compared the ownership of one
share of United Federal Stock to the ownership of the number of shares of
Triangle Stock indicated by the Exchange Rate, from the perspective of claims on
various balance sheet and income statement variables. For the purpose of this
analysis Triangle's financial results were adjusted pro forma for Triangle's
merger with Guaranty State Bancorp. Carson Medlin found that as a result of the
Merger United Federal's shareholders would have a claim to $0.97 of estimated
pro forma 1998 diluted earnings per share versus $0.67 without. United Federal's
shareholders and optionholders would have had a claim to $269.5 million in June
30, 1998 total assets compared to $301.9 million without the Merger. United
Federal's shareholders would have had a claim to $6.98 in June 30, 1998 pro
forma book value per share, adjusted pro forma for the exercise of all options,
compared to $7.19 before the Merger. Furthermore, United Federal's shareholders
would be expected, assuming the continuation of Triangle's recently declared
cash dividend rate, to receive cash dividends at the annual rate of $0.57 per
United Federal share after the Merger versus $0.24 per share prior to the
Merger. Based on the Exchange Rate and the price of Triangle Stock on August 27,
1998, United Federal's shareholders would receive Triangle Stock with a value of
$17.50 per United Federal share compared to a price of $11.50 per share which
was the price at which shares of United Federal traded in early December 1997,
prior to announcement of an agreement to merge with Triangle.

      OTHER ANALYSES. Carson Medlin also reviewed selected investment research
reports on and earnings estimates for Triangle. In addition, Carson Medlin
performed a dilution analysis and such other analyses and comparisons that it
deemed appropriate.

      The opinion expressed by Carson Medlin was based upon market, economic and
other relevant considerations as they existed. Carson Medlin confirmed the
appropriateness of its reliance on the analyses used to render its opinion dated
September 1, 1998 by performing procedures to update certain of such analyses
and by reviewing assumptions on which such analyses were based and the factors
considered in connection therewith. Events occurring after the date of issuance
of the opinion, including but not limited to, changes affecting the securities
markets, the results of operations or material changes in the assets or
liabilities of United Federal or Triangle could materially affect the
assumptions used in preparing the opinion.


                                       13
<PAGE>

                                OTHER MATTERS

      As of the date of this Proxy Statement/Prospectus Supplement, the Board of
Directors of United Federal did not know of any matters that will be presented
for consideration at the United Federal Special Meeting other than as described
in the Proxy Statement/Prospectus dated August 7, 1998, as supplemented hereby.
However, if any other proper matters shall come before the United Federal
Special Meeting or any adjournment thereof and be voted upon, the enclosed blue
proxy will be deemed to confer discretionary authority to the individuals named
as proxies therein to vote the shares represented by such proxy as to any such
matters.



                                       14
<PAGE>






                                  APPENDIX I

                               AMENDMENT NO. 2,
                         DATED SEPTEMBER 1, 1998, TO
               AGREEMENT AND PLAN OF REORGANIZATION AND MERGER
                             DATED MARCH 4, 1998,
                         AMENDED AS OF AUGUST 7, 1998





<PAGE>

                              AMENDMENT NO. 2 TO
               AGREEMENT AND PLAN OF REORGANIZATION AND MERGER
                                 By and Among
                         UNITED FEDERAL SAVINGS BANK,
                                 TRIANGLE BANK
                                      and
                            TRIANGLE BANCORP, INC.

            THIS AMENDMENT NO. 2 TO AGREEMENT AND PLAN OF  REORGANIZATION  AND
MERGER  (hereinafter  called  "Agreement")  entered  into  as of  1st  day  of
September,   1998,  by  and  among  UNITED   FEDERAL   SAVINGS  BANK  ("United
Federal"),   TRIANGLE  BANK  ("Triangle")  and  TRIANGLE  BANCORP,  INC.  (the
"Holding Company").

            WHEREAS, United Federal, Triangle and the Holding Company are
parties to an Agreement and Plan of Reorganization and Merger dated March 4,
1998 and amended as of August 7, 1998 (the "Merger Agreement), pursuant to which
United Federal will merge with Triangle Bank (the "Merger"); and,

            WHEREAS, to ensure the completion of the Merger despite continued
fluctuations in the price of the Holding Company's common stock ("Triangle
Stock"), the parties wish to amend the price structure contained in the Merger
Agreement.

            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, the Holding Company, Triangle and United
Federal hereby adopt and make this Agreement and mutually agree as follows:

1.  Section  1.05.a.  of the Merger  Agreement  is deleted and replaced in its
entirety as follows:

      "At the Effective Time, all rights of United Federal's shareholders with
respect to all then outstanding shares of United Federal's common stock ($0.01
par value) ("United Federal Stock") shall cease to exist, and, as consideration
for and to effectuate the Merger (and except as otherwise provided below) each
such outstanding share of United Federal Stock (other than any shares held by
the Holding Company) shall be converted, without any action on the part of the
holder of such share, the Holding Company, Triangle or United Federal, into
1.098 (the "Exchange Rate") newly issued shares of the Holding Company's no par
value common stock ("Triangle Stock").

            In the event the Holding Company enters into a binding written
agreement to be acquired by a third party which causes the average closing price
of Triangle Stock for the twenty (20) trading days preceding a date three (3)
days before the Effective Time to exceed $28.00, the Exchange Rate shall be
adjusted to yield a per share dollar value to a holder of United Federal Stock
of not more than $24.11.

            At the Effective Time, and without any action by United Federal,
Triangle, the Holding Company or any holder thereof, United Federal's stock
transfer books shall be closed as to 

                                      II-1
<PAGE>

holders of United Federal Stock immediately prior to the Effective Time and,
thereafter, no transfer of United Federal Stock by any such holder may be made
or registered; and the holders of shares of United Federal Stock shall cease to
be, and shall have no further rights as, shareholders of United Federal other
than as provided herein. Following the Effective Time, certificates representing
shares of United Federal 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, certificates
for the number of whole shares of the Triangle Stock to which such holders shall
have become entitled on the basis set forth above, plus cash for any fractional
share interests as provided herein."

2. Section 8.02.a(iv) is amended by deleting the reference to Paragraph 1.05.1.,
and Section 8.02.b(iv) is deleted in its entirety.

3. In the event the Exchange Rate provides a value of less than $20.00 per share
of United Federal Stock, Triangle agrees that as soon as practicable following
the Effective Time, one member of United Federal's Board of Directors, to be
selected by the Holding Company, will be appointed to the Board of Directors of
the Holding Company for a term of two years ending with the Holding Company's
2000 Annual Meeting of Shareholders. For such service, this individual will be
paid in accordance with the Holding Company's normal polices.

4. All other terms of the Merger Agreement shall remain in full force and
effect.

                                      II-2

<PAGE>



IN WITNESS WHEREOF, United Federal, Triangle and the Holding Company each has
caused this Agreement to be executed in its name by its duly authorized officers
as of the date first above written.
                                    TRIANGLE BANCORP, INC.



                                    By:   /s/ Michael S. Patterson
                                          --------------------------------
                                          Michael S. Patterson
                                          President and Chief Executive Officer
ATTEST:

/s/ Susan C. Gilbert
- ----------------------
Susan C. Gilbert, Secretary


Corporate Seal]


                                  TRIANGLE BANK

                                    By:   /s/ Michael S. Patterson
                                          -------------------------------
                                          Michael S. Patterson
                                          President and Chief Executive Officer
ATTEST:

/s/ Susan C. Gilbert
- ----------------------
Susan C. Gilbert, Secretary


[Corporate Seal]
                                          UNITED FEDERAL SAVINGS BANK


                                          By:   /s/ John A. Barker
                                                --------------------------
                                                John A. Barker
                                                President and Chief Executive
                                                Officer
ATTEST:

/s/ Paula V. Walker
- -----------------------
Paula V. Walker, Assistant Secretary


[Corporate Seal]


                                      II-3
<PAGE>

                                 APPENDIX II


            UPDATED FAIRNESS OPINION OF THE CARSON MEDLIN COMPANY
                           DATED SEPTEMBER 1, 1998



































<PAGE>

                                                                    APPENDIX II

September 1, 1998

Board of Directors
United Federal Savings Bank
116 South Franklin Street
Rocky Mount, NC   27802-1120

Members of the Board:

You have requested our opinion as to the fairness, from a financial point of
view, of the aggregate consideration to be received by the unaffiliated
shareholders of United Federal Savings Bank ("United Federal") under the terms
of a certain proposed Agreement and Plan of Reorganization and Merger dated as
of March 4, 1998, amended as of August 7, 1998 and as of September 1, 1998 (the
"Agreement") by and between United Federal and Triangle, Bancorp, Inc.
("Triangle") pursuant to which United Federal will merge with and into Triangle
(the "Merger"). Under the terms of the Agreement, each of the outstanding shares
of United Federal common stock shall be converted into the right to receive
1.098 shares of Triangle common stock (the "Exchange Rate"). The foregoing
summary of the Merger is qualified in its entirety by reference to the
Agreement.

The Carson Medlin Company is a National Association of Securities Dealers, Inc.
(NASD) member investment banking firm which specializes in the securities of
southeastern United States financial institutions. As part of our investment
banking activities, we are regularly engaged in the valuation of southeastern
United States financial institutions and transactions relating to their
securities. We regularly publish our research on independent community banks and
thrifts regarding their financial and stock price performance. We are familiar
with the commercial banking and thrift industry in North Carolina and the
Southeast and the major commercial banks and thrifts operating in that market.
We have been retained by United Federal in a financial advisory capacity to
render our opinion hereunder, for which we will receive compensation.

In reaching our opinion, we have analyzed the respective financial positions,
both current and historical, of United Federal and Triangle. We have reviewed:
(i) the Agreement; (ii) the annual reports to shareholders of United Federal,
including audited financial statements for the five years ended December 31,
1997; (iii) the Proxy Statement of United Federal dated April 10, 1998 for the
annual meeting of shareholders held on May 28, 1998; (iv) the annual report on
Form 10-K of United Federal for the year ended December 31, 1997; (v) the
quarterly reports on Form 10-Q of United Federal for the quarters ended March
31, 1998 and June 30, 1998; (vi) the Thrift Financial Report of United Federal
as of March 31, 1998; (vii) the Uniform Thrift Performance Report for United
Federal as of December 31, 1997; (viii) the annual reports to shareholders of
Triangle, including audited financial statements for the five years ended
December 31, 1997; (ix) the annual report on Form 10-K of Triangle for the year
ended December 31, 1997; (x) the Proxy Statement of Triangle dated March 20,
1998 for the annual meeting of shareholders held on April 28, 1998; (xi) the
quarterly reports on

<PAGE>


Board of Directors
United Federal Savings Bank
September 1, 1998
Page 2

Form 10-Q of Triangle for the quarters ended March 31, 1998 and June 30, 1998;
(xii) the Consolidated Report of Condition and Income of Triangle Bank as of
March 31, 1998; (xiii) the Uniform Bank Performance Report for Triangle Bank as
of December 31, 1997; (xiv) a copy of the Proxy Statement/Prospectus prepared
for the special meeting of the shareholders of Guaranty State Bancorp to
consider the merger with Triangle; (xv) the consolidated financial statements of
Guaranty State Bancorp, including audited financial statements for the year
ended December 31, 1996; (xvi) the annual report on Form 10-K of Guaranty State
Bancorp for the year ended December 31, 1997; (xvii) unaudited interim financial
statements of Guaranty State Bancorp as of March 31, 1998; (xviii) the Uniform
Bank Performance Report for Guaranty State Bank as of December 31, 1997; (xix)
the Proxy Statement/Prospectus dated August 7, 1998 and a preliminary copy of
the Proxy Statement/Prospectus Supplement dated September 1, 1998; and (xx)
certain other financial and operating information with respect to the business,
operations and prospects of United Federal and Triangle. We also: (i) held
discussions with members of the senior management of United Federal and Triangle
regarding their respective historical and current business operations, financial
condition and future prospects; (ii) reviewed the historical market prices and
trading activity for the common stocks of United Federal and Triangle and
compared them with those of certain publicly traded companies which we deemed to
be relevant; (iii) compared the results of operations of United Federal and
Triangle with those of certain banking and thrift companies which we deemed to
be relevant; (iv) compared the proposed financial terms of the Merger with the
financial terms, to the extent publicly available, of certain other recent
business combinations of commercial banking and thrift organizations; (v)
analyzed the pro forma financial impact of the Merger on Triangle; and (vi)
conducted such other studies, analyses, inquiries and examinations as we deemed
appropriate.

We have relied upon and assumed, without independent verification, the accuracy
and completeness of all information provided to us. We have not performed or
considered any independent appraisal or evaluation of the assets of United
Federal or Triangle. The opinion we express herein is necessarily based upon
market, economic and other relevant considerations as they exist and can be
evaluated as of the date of this letter.

Based upon the foregoing, it is our opinion that the aggregate consideration
provided for in the Agreement is fair, from a financial point of view, to the
unaffiliated shareholders of United Federal Savings Bank.

Very truly yours,

THE CARSON MEDLIN COMPANY



<PAGE>



               PART II. INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

   The following exhibits and financial statement schedules are filed as part of
this Registration Statement.

(a)  Exhibits

Exhibit No.
pursuant to
Item 601 of
Regulation S-K       Description of Exhibit

2(a)           Agreement and Plan of Reorganization and Merger among United
                     Federal Savings Bank, Triangle Bancorp, Inc. and
                     Triangle Bank dated March 4, 1998, and amended August 7,
                     1998, (included as and incorporated by reference from
                     Appendix I to the Proxy Statement/Prospectus dated
                     August 7, 1998 and filed as a part of the Registration
                     Statement)

2(b)           Amendment No. 2, dated September 1, 1998, to Agreement and
                     Plan of of Reorganization and Merger among United
                     Federal Savings Bank, Triangle Bancorp, Inc. and
                     Triangle Bank dated March 4, 1998, and amended August 7,
                     1998 (included as and incorporated by reference from
                     Appendix I to the Proxy Statement/Prospectus Supplement
                     dated September 1, 1998 filed as a part of the
                     Registration Statement)

3(a)*          Articles of Amendment to Articles of  Incorporation of Triangle
                     Bancorp, Inc. effective as of May 6, 1998

3(b)                 Bylaws of Triangle Bancorp, Inc., amended as of September
                     17, 1997 (incorporated by reference from Exhibit 3(a) of
                     Registrant's Form 10-K for the fiscal year ended December
                     31, 1997, filed with the Commission on March 27, 1998)

4*             Agreement of Triangle Bancorp, Inc. to furnish a copy of the
                     Junior Subordinated Indenture between Triangle Bancorp,
                     Inc. and Bankers Trust Company (as Trustee) dated as of
                     December 3, 1997

5*             Opinion of Alexander M. Donaldson, Esq., Senior Vice President
                     and General Counsel of Triangle Bancorp, Inc., as to the
                     legality of the securities to be registered

8*             Opinion of PricewaterhouseCoopers LLP as to tax matters

10(a)          Triangle Bancorp, Inc. 1988 Incentive Stock Option Plan, as
                     amended on August 19, 1997 and November 18, 1997
                     (incorporated by reference


                                      II-2
<PAGE>

                     from Exhibit 10(a) to the Registrant's Form 10-K for the
                     fiscal year ended December 31, 1997, filed with the
                     Commission on March 27, 1998)

10(b)          Triangle Bancorp, Inc. 1988 Non-Qualified Stock Option Plan,
                     as amended on August 19, 1997 and November 18, 1997
                     (incorporated by reference from Exhibit 10(b) to the
                     Registrant's Form 10-K for the fiscal year ended
                     December 31, 1997, filed with the Commission on March
                     27, 1998)

10(c)                Triangle Bancorp, Inc. 1998 Omnibus Stock Plan
                     (incorporated by reference to Exhibit 10(c) to the
                     Registrant's Form 10-K for the fiscal year ended December
                     31, 1997 as filed with the Commission on March 27, 1998)

10(d)          Triangle Bank Deferred Compensation Plan for Outside Directors
                     (incorporated by reference to Exhibit 10(c) to the
                     Registrant's Form 10-K for the fiscal year ended
                     December 31, 1993 as filed with the Commission on March
                     31, 1994)

10(e)                Triangle Bancorp, Inc. 1997 Deferred Compensation Plan for
                     Outside Directors (incorporated by reference from Exhibit
                     10(e) to the Registrant's Form 10-K for the fiscal year
                     ended December 31, 1997, filed with the Commission on March
                     27, 1998)

10(f)          Employment Agreement between Triangle Bank and Michael S.
                     Patterson (incorporated by reference to Exhibit 10(a) to
                     Registrant's Form 10-K for the fiscal year ended
                     December 31, 1993 filed with the Commission on March 31,
                     1994)

10(g)          Deferred Compensation Agreement between Triangle Bank and
                     Michael S. Patterson (incorporated by reference from
                     Exhibit 10(g) of Registrant's Registration Statement on
                     Form S-4 (Registration No. 33-86226))

10(h)          Deferred Compensation Agreement between Triangle Bank and
                     Debra L. Lee (incorporated by reference from Exhibit
                     10(i) of Registrant's Registration Statement on Form S-4
                     (Registration No. 33-86226))

10(i)          Split Dollar Insurance Agreement and Deferred Compensation
                     Agreement between Triangle Bancorp, Inc. and Michael S.
                     Patterson (incorporated by reference to Exhibit 10(n) to
                     the Registrant's Form 10-K for the fiscal year ended
                     December 31, 1995 as filed with the Commission on March
                     31, 1996)

10(j)          Change of Control Agreement dated December 18, 1996 between
                     Triangle Bank and Steven R. Ogburn (incorporated by
                     reference from Exhibit 


                                      II-3
<PAGE>


                     10(l) of Registrant's Form 10-K for the fiscal year ended
                     December 31, 1997, as filed with the Commission on March
                     27, 1998)

10(k)          Change of Control Agreement dated December 18, 1996 between
                     Triangle Bank and Debra L. Lee (incorporated by reference
                     from Exhibit 10(m) of Registrant's Form 10-K for the fiscal
                     year ended December 31, 1997, as filed with the Commission
                     on March 27, 1998)

10(l)          Employment Agreement between Triangle Bancorp, Inc. and Billy
                     N. Quick, Sr. (incorporated by reference from Exhibit
                     10(n) of Registrant's Form 10-K for the fiscal year
                     ended December 31, 1997, as filed with the Commission on
                     March 27, 1998)

10(m)                Change of Control Agreement among Triangle Bancorp, Inc.,
                     Triangle Bank and Edward O. Wessell (incorporated by
                     reference from Exhibit 10(o) of Registrant's Form 10-K for
                     the fiscal year ended December 31, 1997, as filed with the
                     Commission on March 27, 1998)

10(n)          Supplemental Employee Retirement Plan dated January 1, 1998
                     between Triangle Bank and Michael S. Patterson
                     (incorporated by reference from Exhibit 10(p) of
                     Registrant's Form 10-K for the fiscal year ended
                     December 31, 1997, as filed with the Commission on March
                     27, 1998)

10(o)          Form of Supplemental Employee Retirement Plan dated January 1,
                     1998 between Triangle Bank and each of Debra L. Lee,
                     Steven R. Ogburn and Edward O. Wessell (incorporated by
                     reference from Exhibit 10(q) of Registrant's Form 10-K
                     for the fiscal year ended December 31, 1997, as filed
                     with the Commission on March 27, 1998)

10(p)*         Change of Control Agreement among Triangle Bancorp, Inc.,
                     Triangle Bank and Robert E. Branch

13(a)*               United Federal Annual Report on Form 10-K for fiscal year
                     ended December 31, 1997

13(b)*         United Federal Quarterly Report on Form 10-Q for quarter ended
                     March 31, 1998

13(c)*         United Federal Current Report on Form 8-K dated March 4, 1998

23(a)*         Consent of Alexander M. Donaldson, Esq. (contained in Exhibit
                     5)

23(b)*         Consent of PricewaterhouseCoopers LLP

23(c)*         Consent of McGladrey & Pullen LLP

23(d)          Consent of The Carson Medlin Company

                                      II-4

<PAGE>


23(e)*         Consent of PricewaterhouseCoopers LLP regarding tax opinion
                     (contained in Exhibit 8)

24*            Power of Attorney

99             Form of proxy to be used in connection with the reconvened
                     Special Meeting of Shareholders of United Federal
                     Savings Bank

*  Previously filed.

(b)                  Financial Statement Schedules

                     All financial statement schedules are omitted as
                     substantially all required information is contained in the
                     Registrant's consolidated financial statements which are
                     incorporated herein by reference or is not applicable.










                                      II-5


<PAGE>



                                  SIGNATURES

      Pursuant to the requirement of the Securities Act of 1933, the registrant
has duly caused this post-effective amendment to registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City
of Raleigh, State of North Carolina, on September 1, 1998.

                                             TRIANGLE BANCORP, INC.


                                             By:     /s/ Michael S. Patterson
                                                     ------------------------  
                                                     Michael S. Patterson
                                                     President and Chief
                                                     Executive Officer


   Pursuant to the requirements of the Securities Act of 1933, this registration
statement has been signed below by the following persons in the capacities and
on the dates indicated.
<TABLE>
<CAPTION>
<S> <C>



         Signature                      Title                          Date

                            
                            
/s/     Michael S. Patterson   President, Chief Executive        September 1, 1998
- ----------------------------   Officer, Chairman and Director 
Michael S. Patterson           (Principal Executive Officer                              
                               

/s/   Debra L. Lee            Executive Vice President and
- ----------------------------  Chief Financial Officer
       Debra L. Lee           (Principal Financial Officer)      September 1, 1998


/s/ Lisa F. Campbell          Senior Vice President
- ----------------------------  (Principal Accounting Officer)     September 1, 1998
    Lisa F. Campbell          


/s/ Carole S. Anders*                  Director                  September 1, 1998
- -----------------------------  
     Carole S. Anders                  



/s/  Charles S.  Ashford, Jr.*         Director                  September 1, 1998
- ------------------------------
  Charles H. Ashford, Jr.              

                                       Director 
- ------------------------------
    Cy N. Bahakel               


- ------------------------------         Director 
      Edwin B. Borden                  
</TABLE>


                                      II-6
<PAGE>
<TABLE>
<S> <C>

/s/  Robert E. Bryan, Jr.*             Director                  September 1, 1998 
- -----------------------------
   Robert E. Bryan, Jr.                


/s/  David T. Clancy*                  Director                  September 1, 1998 
- ------------------------------
      David T. Clancy                  


/s/ N. Leo Daughtry*                   Director                  September 1, 1998 
- ------------------------------
      N. Leo Daughtry                  


                                       Director 
- ------------------------------
     Syd W. Dunn, Jr.                  


/s/ Willie S. Edwards*                 Director                  September 1, 1998 
- ------------------------------
    Willie S. Edwards                  


/s/ James P. Godwin, Sr.*              Director                  September 1, 1998 
- ------------------------------
   James P. Godwin, Sr.                


/s/ Robert L. Guthrie*                 Director                  September 1, 1998 
- ------------------------------
     Robert L. Guthrie                 


/s/ B.W. Harris, III*                  Director                  September 1, 1998 
- ------------------------------
     B. W. Harris, III                 

/s/ John B. Harris*                    Director                  September 1, 1998
- ------------------------------
      John B. Harris                                             

/s/ George W. Holt*                    Director                  September 1, 1998 
- ------------------------------
      George W. Holt                   


/s/ Earl Johnson, Jr.*                 Director                  September 1, 1998 
- ------------------------------
     Earl Johnson, Jr.                 


/s/ Michael A. Maxwell*                Director                  September 1, 1998 
- ------------------------------
    Michael A. Maxwell                 

</TABLE>

                                      II-7
<PAGE>
<TABLE>
<S> <C>

/s/ Wendell H. Murphy*                 Director                  September 1, 1998 
- ------------------------------
     Wendell H. Murphy                 


/s/ Patrick H. Pope*                   Director                  September 1, 1998 
- ------------------------------
      Patrick H. Pope                  


/s/ William R. Pope*                   Director                  September 1, 1998 
- ------------------------------
      William R. Pope                  


/s/ Edythe M. Poyner*                  Director                  September 1, 1998 
- ------------------------------
     Edythe M. Poyner                  



/s/ Billy N. Quick, Sr.*               Director                  September 1, 1998 
- ------------------------------
    Billy N. Quick, Sr.                


/s/ J. Dal Snipes*                     Director                  September 1, 1998 
- ------------------------------
    J. Dal Snipes                      


/s/ Charles J. Stewart*                Director                  September 1, 1998 
- ------------------------------
    Charles J. Stewart                 


/s/ N. Johnson Tilghman*               Director                  September 1, 1998 
- ------------------------------
    N. Johnson Tilghman                



/s/ Sydnor M. White, Jr.*              Director                  September 1, 1998 
- ------------------------------
   Sydnor M. White, Jr.                


/s/ J. Blount Williams*                Director                  September 1, 1998 
- ------------------------------
    J. Blount Williams



* By: /s/ Michael S. Patterson
- ------------------------------
      Michael S. Patterson,
      Attorney-in-fact                       
</TABLE>


                                      II-8
    

                      CONSENT OF THE CARSON MEDLIN COMPANY

We hereby consent to the inclusion as Appendix II to the Proxy Statement/
Prospectus Supplement constituting part of the Registration Statement on Form
S-4 of Triangle Bancorp, Inc. of our letter to the Board of Directors of United
Federal Savings Bank and to the references made to such letter and to the firm
in such Proxy Statement/Prospectus Supplement. In giving such consent, we do not
thereby admit that we come within the category of persons whose consent is
required under Section 7 of the Securities Act of 1933 or the rules and
regulations of the Securities and Exchange Commission thereunder.

                                                   /s/ The Carson Medlin Company
                                                       
                                                   THE CARSON MEDLIN COMPANY

Raleigh, North Carolina
September 1, 1998




********************************************************************************
                                    APPENDIX

                               REVOCABLE PROXY

 SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF UNITED FEDERAL SAVINGS BANK
 FOR THE RECONVENED SPECIAL MEETING OF SHAREHOLDERS TO BE HELD SEPTEMBER 16,
                                     1998

The undersigned shareholder of United Federal Savings Bank ("United Federal")
hereby constitutes and appoints John A. Barker and Robert C. White, or any of
them, as attorneys-in-fact and proxies, with full power and substitution to
represent and vote as directed below, all shares of the common stock of United
Federal held of record by the undersigned on July 27, 1998, at the reconvened
Special Meeting of Shareholders of United Federal to be held on Wednesday,
September 16, 1998 at 2:00 p.m., local time, at The Carlton House, 215 North
Church Street, Rocky Mount, North Carolina, and at any adjournments thereof (the
"Special Meeting").

1.    PROPOSAL TO APPROVE MERGER.  Proposal to approve the Agreement and Plan
      of Reorganization and Merger dated as of March 4, 1998 as amended as of
      August 7, 1998 and September 1, 1998 and the related Plan of Merger
      (collectively, the "Amended Agreement"), by and among United Federal,
      Triangle Bank and Triangle Bancorp, Inc. ("Triangle"), and to approve
      the transactions contemplated therein, pursuant to which, among other
      matters, (i)  at the effective time, United Federal will merge with and
      into Triangle Bank or a wholly-owned interim bank subsidiary of
      Triangle (the "Merger"), and (ii)  each share of common stock of United
      Federal outstanding immediately prior to the Merger will be converted
      into 1.098 shares of the common stock, no par value, of Triangle.

      [  ]   FOR               [   ]  AGAINST            [  ]  ABSTAIN


2.    OTHER BUSINESS. To vote the shares of United Federal common stock
      represented by this appointment of proxy upon such other matters as may
      properly come before the Special Meeting and any adjournments thereof in
      accordance with their best judgment.

EVEN IF YOU ALREADY VOTED USING A WHITE PROXY CARD, PLEASE VOTE, SIGN AND DATE
THIS APPOINTMENT OF PROXY ON THE REVERSE SIDE AND PROMPTLY RETURN IT USING THE
ENCLOSED ENVELOPE.



<PAGE>



                           (continued from other side)

      THE SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY WILL BE VOTED AS
DIRECTED ABOVE. IN THE ABSENCE OF ANY DIRECTION, THE PROXIES WILL VOTE THE
SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY FOR PROPOSAL 1. SHOULD OTHER
MATTERS PROPERLY COME BEFORE THE SPECIAL MEETING, THE PROXIES WILL BE AUTHORIZED
TO VOTE THE SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY IN ACCORDANCE WITH
THEIR BEST JUDGMENT. THIS APPOINTMENT OF PROXY MAY BE REVOKED BY THE HOLDER OF
THE SHARES TO WHICH IT RELATES AT ANY TIME BEFORE IT IS EXERCISED BY FILING WITH
THE SECRETARY OF UNITED FEDERAL A WRITTEN INSTRUMENT REVOKING IT OR A DULY
EXECUTED APPOINTMENT OF PROXY BEARING A LATER DATE OR BY ATTENDING THE SPECIAL
MEETING AND ANNOUNCING HIS OR HER INTENTION TO VOTE IN PERSON.


                              By signing this proxy, the undersigned hereby
                              acknowledges receipt of the Notice of Special
                              Meeting and accompanying Proxy
                              Statement/Prospectus each dated August 7, 1998,
                              and the Proxy Statement/Prospectus Supplement
                              dated September 1, 1998.


                              Dated: _______________________________, 1998



                              ---------------------------------------------
                              Signature of Owner of Shares



                              ---------------------------------------------
                              Signature of Joint Owner of Shares (if any)


                              Instruction: Please sign above exactly as your
                              name appears on this appointment of proxy. Joint
                              owners of shares should both sign. Fiduciaries or
                              other persons signing in a representative capacity
                              should indicate the authorized capacity in which
                              they are signing.

IMPORTANT: TO INSURE THAT A QUORUM IS PRESENT AT THE SPECIAL MEETING, PLEASE
SEND IN YOUR APPOINTMENT OF PROXY WHETHER OR NOT YOU HAVE ALREADY VOTED USING A
WHITE PROXY CARD AND WHETHER OR NOT YOU PLAN TO ATTEND. EVEN IF YOU SEND IN YOUR
APPOINTMENT OF PROXY, YOU WILL BE ABLE TO VOTE IN PERSON AT THE SPECIAL MEETING
IF YOU SO DESIRE.


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