SUMMIT BANCORP/NJ/
SC 13D, 1999-10-14
NATIONAL COMMERCIAL BANKS
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                       SECURITIES AND EXCHANGE COMMISSION

                            Washington, DC 20549-1004

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. )*


                                    NMBT Corp
                                (Name of Issuer)

                     Common Stock, par value $.01 per share
                         (Title of Class of Securities)

                                    629189101
                                 (CUSIP Number)

                   Richard F. Ober, Jr., Esq., Summit Bancorp.
                       301 Carnegie Center, P.O. Box 2066,
                    Princeton, NJ 08543-2066 (609) 987-3430
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 October 4, 1999
                          (Date of Event which Requires
                            Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-l(b) (3) or (4), check the following box. [ ]

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

                       (Continued on the following pages)


                                      - 1 -

<PAGE>

CUSIP No.   629189101

1) Name of Reporting Person's S.S. or I.R.S. Identification Nos. of Above Person

                                    Summit Bancorp.
                                    IRS Identification No. 22-1903313

2) Check the Appropriate Box if a Member of a Group (See Instructions)

         (a)      [  ]
         (b)      [  ]
                                       N/A

3) SEC Use Only


4) Source of Funds (See Instructions) N/A

5) Check if Disclosure of Legal  Proceedings is Required  Pursuant to Items 2(d)
   or 2(e) [ ] N/A

6) Citizenship or Place of Organization
                                   New Jersey

Number of Shares Bene-          (7) Sole Voting Power
ficially Owned by Each                    532,043*
Reporting Per-                  (8) Shared Voting Power
son With                                      -0-
                                (9) Sole Dispositive Power
                                          532,043*
                                (10) Shared Dispositive Power
                                              -0-


11) Aggregate Amount Beneficially Owned by Each Reporting Person

                                   532,043*


12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares
         (See Instructions) [   ]

                                       N/A


13) Percent of Class Represented by Amount in Row (11)

                                     16.63% *


14) Type of Reporting Person (See Instructions)

                                       CO

*    Includes  531,043  shares  which may be acquired  upon the exercise of an
     option  currently not  exercisable  within 60 days, as to which  beneficial
     ownership is disclaimed.

                                      - 2 -

<PAGE>
Item 1. Security and Issuer.

     This Statement  relates to the Common Stock,  par value $.01 per share,  of
NMBT Corp ("NMBT" or "Issuer").

     The  principal  executive  offices of Issuer are located at 55 Main Street,
New Milford, Connecticut 06776-2400.

Item 2. Identity and Background.

     Summit  Bancorp.   ("Summit"),  the  reporting  person,  is  a  corporation
organized under the laws of the State of New Jersey in 1970 and is registered as
a bank holding company under the federal Bank Holding Company Act of 1956.

     The  principal  business  of  the  reporting  person  is the  ownership  of
commercial bank and non-bank, financial service subsidiaries.

     The address of the  principal  office of Summit  Bancorp.  is 301  Carnegie
Center, P.O. Box 2066, Princeton, New Jersey 08543-2066.

     The name,  residence or business address,  present principal  occupation or
employment (and the name,  principal  business and address of any corporation or
other  organization in which such  employment is conducted),  and citizenship of
each director and executive officer follow:
<TABLE>
<CAPTION>
<S>                                                 <C>
                                                     Position with Summit and
Name and Residence (R)                               Principal Occupation if
Or Business Address (B)                              Different from Summit

Mr. Robert L. Boyle (R)                              Director of Summit. Representative (since 1987) with the
7 Orchard Lane                                       William H. Hintelmann Firm (realty and insurance).
Rumson, NJ  07760

Mr. James C. Brady (B)                               Director of Summit. Managing General Partner (since 1987)
Partner                                              of Mill House Associates, L.P. (real estate and securities
Mill House Associates, L.P.                          investment).
Hamilton Farms - Pottersville Rd.
Gladstone, NJ 07934

Mr. T.J. Dermot Dunphy  (B)                          Director of Summit.  Chairman (since 1996), Director and Chief
President & CEO                                      Executive Officer (since 1971) of Sealed Air Corporation
Sealed Air Corporation                               (protective packaging products and systems).
Park 80 Plaza East
Saddle Brook, NJ  07662

Ms. Anne Evans Estabrook (B)                         Director of Summit.   Sole proprietor (since 1984) of Elberon
Elberon Development Co.                              Development Co. (real estate) and President (since 1983)
235 Birchwood Avenue                                 of David O. Evans, Inc. (real estate).  Chairman and Director
Cranford, NJ 07016                                   of E'town Corporation (parent company of regulated water
                                                     utility and real estate company).

Mrs. Elinor J. Ferdon (R)                            Director of Summit.   Volunteer professional. Director (since
Litchfield Way                                       1974) and National President (since 1996) of the Girl Scouts
P.O. Box 255                                         of U.S.A.
Alpine, NJ 07620-0255

Mr. William M. Freeman (B)                           Director of Summit.  President and Chief Executive Officer of
President and Chief Executive Officer                Bell Atlantic - New Jersey (since April, 1998).  Former
Bell Atlantic - New Jersey                           President and Chief Executive Officer of Bell Atlantic -
540 Broad Street, 20th floor                         Washington (1994 - 1998)
Newark, NJ  08102



                                      - 3 -

<PAGE>



                                                     Position with Summit and
Name and Residence (R)                               Principal Occupation if
Or Business Address (B)                              Different from Summit

Mr. Thomas H. Hamilton (B)                           Director of Summit.  Formerly Chairman and Chief Executive
218 Philadelphia Ave.                                Officer (1989-1997) and President (1989-1993; 1995-1997)
Egg Harbor, NJ 08215                                 of Collective Bancorp.  Formerly Chairman and Chief Executive
                                                     Officer    (1962-1998),    President
                                                     (1962-1989;  1994-1998) and Director
                                                     (1960-1998) of Collective Bank.

Mr. Fred G. Harvey (R)                               Director of Summit.   Director and Vice President (since 1983)
1903 Saucon Lane                                     of E & E Corporation (engineering consulting services).
Bethlehem, PA 18015

Mr. Francis J. Mertz (R)                             Director of Summit. Former Trustee (1991-1999) and
Stanie Brae Drive                                    Former President (1990-1999) of Fairleigh Dickinson
Watchung, NJ 07060                                   University.

Mr. George L. Miles, Jr. (B)                         Director  of Summit.   President and CEO (Since 1994) of
President and CEO                                    WQED Pittsburgh, Inc.(television and radio broadcasting
WQED Pittsburgh                                      and magazine publishing).
4802 Fifth Avenue
Pittsburgh, PA  15213

Mr. William R. Miller (R)                            Director of Summit.  Formerly Senior Vice President,
1812 Franklin Blvd.                                  Manufacturing (1975-1991) of Lenox China, Inc..  Formerly
Linwood, NJ 08221                                    Director (1989-1997) of Collective Bancorp and Collective
                                                     Bank (1985-1998).

Mr. Raymond Silverstein (B)                          Director of Summit.   Consultant (since 1989) and former
Alloy, Silverstein, Shapiro,                         Principal (1949-1989) of Alloy, Silverstein, Shapiro, Adams,
Adams, Mulford & Co.                                 Mulford & Co., P.C. (certified public accountants).
900 Kings Highway
Cherry Hill, NJ 08034

Mr. Orin R. Smith (B)                                Director of Summit.  Chairman (since 1995), Director
Chairman & CEO                                       (since 1981) and Chief Executive Officer (since 1984) of
Engelhard Corporation                                Engelhard Corporation (specialty chemical products, engineered
101 Wood Avenue                                      materials and industrial commodities management).
Iselin, NJ 08830

Mr. Joseph M. Tabak (R)                              Director of Summit.   Chairman and Chief Executive Officer
30 South Adelaide Avenue                             (since 1991) of JPC Enterprises, Inc. (distributor of paper and
Penthouse F                                          plastic disposable products).
Highland Park, NJ 08904

Mr. Douglas G. Watson (R)                            Director of Summit.  Former President and Chief Executive
52 Liberty Corner Road                               Officer (February, 1997 - May, 1999) of Novartis
Far Hills, NJ  07931                                 Corporation (healthcare, agribusiness and nutrition products).

Mr. T. Joseph Semrod (B)                             Director, Chairman of the Board and Chief Executive Officer
Summit Bancorp.                                      of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. Robert G. Cox (B)                                Director and President of Summit.
Summit Bancorp
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066


                                      - 4 -

<PAGE>



                                                     Position with Summit and
Name and Residence (R)                               Principal Occupation if
Or Business Address (B)                              Different from Summit


Mr. John G. Collins (B)                              Director and Vice Chairman of the Board of Summit.
Summit Bancorp.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. James J. Lynch  (B)                              Senior EVP of Summit
7111 Valley Green Road
Fort Washington, PA  19034

Mr. Sabry J. Mackoul (B)                             Senior EVP, Commercial Lending of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. William J. Wolverton (B)                         Senior EVP, Retail Banking of Summit
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. Larry L. Betsinger (B)                           EVP, Operations and Technology of Summit.
55 Challenger Road
6th Floor
Ridgefield Park, NJ 07660-2104

Mr. Alfred M. D'Augusta (B)                          EVP, Human Resources of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. Barry S. Duerk (B)                               EVP, Bank Investments of Summit.
214 Main Street
Hackensack, NJ  07602

Mr. John R. Feeney (B)                               EVP, Corporate Planning of Summit
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. William J. Healy (B)                             EVP, Chief Financial Officer of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Ms. Virginia Ibarra (B)                              EVP, Diversity of Summit
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Ms. Dorinda Jenkins (B)                              EVP, Marketing of Summit
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Joseph A. Micali, Jr. (B)                            EVP, Bank Operations Support of Summit
55 Challenger Road
6th Floor
Ridgefield Park, NJ 07660-2104

                                      - 5 -

<PAGE>

                                                     Position with Summit and
Name and Residence (R)                               Principal Occupation if
Or Business Address (B)                              Different from Summit

Mr. Richard F. Ober, Jr. (B)                         EVP, General Counsel and Secretary of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. Alan N. Posencheg (B)                            EVP, Corporate Operations of Summit.
55 Challenger Road
6th Floor
Ridgefield Park, NJ 07660-2104

Mr. George J. Soltys, Jr. (B)                        EVP, Corporate Planning of Summit
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066

Mr. Timothy S. Tracey (B)                            EVP, Credit and Risk Management
4365 Route 1 South
3rd Floor
Princeton, NJ  08543

Mr. Edmund C. Weiss, Jr. (B)                         EVP, General Auditor of Summit.
301 Carnegie Center
P.O. Box 2066
Princeton, NJ 08543-2066
</TABLE>


     Neither Summit nor, to the best of its knowledge,  any of its directors and
executive  officers  has  during  the past five  years (a) been  convicted  in a
criminal  proceeding  (excluding traffic violations or similar  misdemeanors) or
(b) been a party to a civil proceeding of a judicial or  administrative  body of
competent  jurisdiction  or was or is subject to a  judgment,  decree,  or final
order  enjoining  future  violations of, or prohibiting or mandating  activities
subject  to,  federal or state  securities  laws or finding any  violation  with
respect to such laws.

     All of the above natural persons are citizens of the United States.

Item 3. Source and Amount of Funds or Other Consideration.

     On October 4, 1999,  Summit and Issuer,  a corporation  organized under the
laws of the State of Delaware  and bank  holding  company  registered  under the
federal Bank Holding  Company Act,  entered into a Stock Option  Agreement  (the
"NMBT Option  Agreement")  pursuant to which, in  consideration of the covenants
and agreements of Summit contained therein and in the Merger Agreement  (defined
below),  and as an  inducement  to Summit to enter  into the  Merger  Agreement,
Issuer  granted to Summit an option to  purchase up to an  aggregate  of 531,043
shares of the Common Stock of Issuer at the per share price of $18.87 (the "NMBT
Option").

     Summit is not now able to identify  the source of funds which would be used
if it were to  exercise  the NMBT  Option in whole or in part.  In the event the
need to exercise the NMBT Option arises,  Summit will determine at that time the
appropriate  source of the  funds,  up to  approximately  $10,020,781  needed to
exercise the NMBT Option.

Item 4. Purpose of the Transaction.

     On October 3, 1999,  Summit and Issuer entered into a Agreement and Plan of
Merger  (the   "Merger   Agreement")   providing   for,   among  other   things,
alternatively, (i) the merger of Issuer into Summit, the merger of Issuer into a
wholly owned  subsidiary of Summit or the merger of a wholly owned subsidiary of
Summit  into  Issuer,  and (ii) the  exchange of each  outstanding  share of the
Common  Stock of Issuer  ("Issuer  Common")  for equal to or between  0.7024 and
0.9503 shares of the Common

                                      - 6 -

<PAGE>



Stock of Summit  ("Summit  Common"),  with cash  being  paid in lieu of  issuing
fractional  shares of Summit Common;  all upon the satisfaction of the terms and
conditions set forth in the Merger Agreement,  including the receipt of approval
from the  shareholders of Issuer,  the Board of Governors of the Federal Reserve
System  and the  Connecticut  Department  of  Banking.  NMBT  has the  right  to
terminate the Merger  Agreement if the average price of Summit Common during the
trading  period set forth in the Merger  Agreement  and a quotient  with respect
thereto are less than certain thresholds set forth in the Merger Agreement.

     On  October  4,  1999,  in  connection  with  and in  consideration  of the
execution of the Merger Agreement,  Issuer granted to Summit the NMBT Option, an
option to purchase, under certain circumstances,  up to 531,043 shares of Issuer
Common at a per share exercise price equal to $18.87.  The exercise price of the
NMBT Option was arrived at by mutual agreement of the parties.

     Summit and Issuer,  in accordance  with the terms of the Merger  Agreement,
plan to  merge  Issuer  with  and  into  Summit  upon  the  satisfaction  of all
conditions  set forth in the Merger  Agreement.  The NMBT Option was acquired by
Summit and granted by Issuer for the purpose of decreasing the  likelihood  that
third parties would initiate  actions,  including the acquisition of significant
amounts of the Common Stock of Issuer, having the effect of interfering with the
contractual  relationship  established by the Merger  Agreement or hindering the
consummation of the Merger  contemplated by the parties and of assisting Issuer,
if necessary, in obtaining the requisite shareholder approval of the Merger.

Item 5. Interest in Securities of the Issuer.

     (a) Prior to  October 4, 1999,  Summit  was the  beneficial  owner of 1,000
shares of Issuer  Common.  On  October 4, 1999,  Summit  acquired  the right and
option to acquire up to 531,043  shares of Issuer  Common  pursuant  to the NMBT
Option.  Summit  disclaims  beneficial  ownership  of the shares  which could be
acquired, under certain circumstances,  pursuant to the NMBT Option, inasmuch as
such option is currently not exerciseable within 60 days.

     The 1,000 shares of Issuer  Common held by Summit  represent  less than one
percent of the issued and  outstanding  common  stock of the Issuer and together
with the 531,043 shares of Issuer Common Stock which could be acquired under the
circumstances set forth in the NMBT Option, as to which beneficial  ownership is
disclaimed,  represent approximately 16.63% of the issued and outstanding Common
Stock of Issuer,  treating the 531,043  shares of Common Stock of Issuer covered
by the NMBT Option as issued and  outstanding  for purposes of  calculating  the
foregoing percentage.

     As of October 4, 1999 and  during  the period  from  October 4, 1999 to the
date hereof, to the knowledge of Summit,  no directors or executive  officers of
Summit beneficially owned any shares of Issuer Common.

     (b) Summit  possesses sole power to vote and dispose of the 1,000 shares of
Issuer Common acquired by Summit prior to October 4, 1999.

     Summit  possesses  the  sole  power  to  exercise  the  NMBT  Option  until
termination  occurring in  accordance  with its terms.  The NMBT Option does not
carry any voting  rights.  Upon exercise of the NMBT Option in whole or in part,
Summit would  possess the sole power to vote and dispose of the shares of Issuer
Common  acquired  thereby,   subject  to  certain  conditions  and  restrictions
contained in the Stock Option Agreement.

     (c) During the 60 days preceding the execution of the NMBT Option Agreement
neither  Summit nor,  to the  knowledge  of Summit,  any  director or  executive
officer of Summit effected any transaction in the Common Stock of NMBT

     (d) Not Applicable.

     (e) Not Applicable.



                                      - 7 -

<PAGE>



Item 6.  Contracts, Arrangements, Understandings, or Relationships with
                  Respect to Securities of the Issuer.

     See  response  to Items 3 and 4 and the Merger  Agreement  and NMBT  Option
Agreement constituting Exhibits 10(a) and 10(b), respectively,  to this Schedule
13D. No others exist.

Item 7.  Material to be filed as Exhibits.

      Exhibit No.   Description.

          10(a)     Merger  Agreement,  dated  October  3, 1999  between  Summit
                    Bancorp. and NMBT Corp, including Exhibits A through E.

          (b)       NMBT Corp  Stock  Option  Agreement,  dated as of October 4,
                    1999, between Summit Bancorp. and NMBT Corp.




                                      - 8 -

<PAGE>




                                   SIGNATURES


    After  reasonable  inquiry and to the best of my  knowledge  and  belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.



Dated: October 14, 1999                              Summit Bancorp.



                                                     By /s/ John R. Feeney
                                                        John R. Feeney
                                                        Executive Vice President






                                      - 9 -

<PAGE>



                                    EXHIBITS




      Exhibit No.   Description.

          10(a)     Merger  Agreement,  dated  October 3, 1999,  between  Summit
                    Bancorp. and NMBT Corp, including Exhibits A through E.

          (b)       NMBT Corp  Stock  Option  Agreement,  dated as of October 4,
                    1999, between Summit Bancorp. and NMBT Corp.



                                     - 10 -

                          AGREEMENT AND PLAN OF MERGER

       AGREEMENT  AND PLAN OF  MERGER  dated  October  3,  1999  between  Summit
Bancorp.,  a New  Jersey  business  corporation  ("Summit"),  and NMBT  CORP,  a
Delaware corporation ("NMBT").

                              W I T N E S S E T H :

       WHEREAS,  the  respective  boards of directors of Summit and NMBT deem it
advisable and in the best interests of their respective  shareholders to adopt a
plan of  reorganization  in accordance with the provisions of Section 368 of the
Internal  Revenue  Code  of  1986,  as  amended  (  "Code")  providing  for  the
acquisition of NMBT by Summit on the terms and  conditions  provided for in this
Agreement and Plan of Merger ("Agreement");

       WHEREAS,  the Board of Directors of Summit and NMBT have each  determined
that the  reorganization  contemplated by this Agreement  ("Reorganization")  is
consistent with, and in furtherance of, their respective business strategies and
goals;

       WHEREAS,  Summit  and  NMBT  intend  on the day  after  the  date of this
Agreement and in  consideration of this Agreement to enter into the Stock Option
Agreement ("Option Agreement") attached hereto as Exhibit B; and

       WHEREAS, the parties desire to make certain  representations,  warranties
and  agreements  in  connection  with the  Reorganization  and also to prescribe
certain other terms and conditions of the Reorganization.

       NOW, THEREFORE, in consideration of the premises and the representations,
warranties,  covenants  and  agreements  contained  herein  and  in  the  Option
Agreement, the parties hereto, intending to be legally bound, agree as follows:

                                   ARTICLE I.
                               GENERAL PROVISIONS

       Section 1.01.       The Reorganization.

       (a) Upon the  terms  and  subject  to the  conditions  contained  in this
Agreement,   at  the  Effective   Time  (as  defined  at  Section   1.06),   the
Reorganization shall be effected as follows:

              (1) NMBT shall be merged with and into  Summit  pursuant to and in
accordance  with the  provisions  of, and with the effect  provided  in, the New
Jersey Business  Corporation Act, as amended ("New Jersey Act") and the Delaware
General Corporation Law, as amended ("Delaware Law"); or

              (2) NMBT shall be merged into a wholly owned  subsidiary of Summit
or a wholly owned subsidiary of Summit shall be merged into NMBT, in either case
pursuant  to and in  accordance  with the  provisions  of,  and with the  effect
provided in, the corporate laws of the  jurisdiction of incorporation of each of
the constituent corporations in such merger ("Applicable Corporation Laws").

       (b)  Summit  shall  prior to the  Effective  Time  elect the  method  for
carrying out the  Reorganization  from among those  methods set forth at Section
1.01(a) ("Reorganization Election")


<PAGE>



and following an election of the  Reorganization  method provided for at Section
1.01(a)(2)  Summit  shall  (i)  cause  the  wholly  owned  subsidiary  of Summit
designated as the  constituent  corporation in the  Reorganization  ("Designated
Summit Subsidiary") to approve, execute and deliver this Agreement in accordance
with all Applicable  Corporation  Laws, (ii) cause this Agreement to be approved
by the sole  shareholder of the Designated  Summit  Subsidiary,  (iii) attach as
Exhibit A to this  Agreement  (A) any  additional  terms and  conditions to this
Agreement  required by Applicable  Corporation Laws to effect the Reorganization
and  other  transactions  contemplated  by this  Agreement,  (B) the  terms  and
conditions of any agreement or plan of merger required by Applicable Corporation
Laws,  (C) the date and time that the merger shall be effective or the mechanism
for  determining  the date and time that the merger shall be  effective  and (D)
such other terms and  conditions as Summit shall  determine in its discretion to
be desirable and not contrary to this Agreement or Applicable  Corporation  Laws
regarding  the  corporate  governance  of the  corporation  surviving the merger
contemplated  by  Section  1.01(a),   including  without  limitation  terms  and
conditions  governing  certificates or articles of incorporation  and amendments
thereto or restatements thereof, by-laws of the corporation surviving the merger
and amendments thereto, and directors and officers of the corporation  surviving
the merger; provided, however, that no provision of Exhibit A shall (x) alter or
change the amount or kind of consideration  to be received by NMBT  Shareholders
(as defined at Section  1.07(c)  below) as provided for in this Agreement on the
date  hereof,  (y)  adversely  affect the tax  treatment  of the  Reorganization
Consideration  (as defined in Section  1.03(a)(2)  below) to be received by NMBT
Shareholders or (z) materially impede or delay  consummation of the transactions
contemplated by this Agreement and (iv) cause the Designated  Summit  Subsidiary
to take all actions  appropriate to accomplish the  Reorganization and the other
transactions  contemplated by this Agreement.  Exhibit A as so constituted shall
constitute a part of this  Agreement as fully as if attached  hereto on the date
hereof without separate execution by Summit or NMBT.

       Section 1.02. Capital Stock of Summit. All shares of the capital stock of
Summit issued or issued and outstanding immediately prior to the Effective Time,
including the Common Stock,  par value $.80 per share,  of Summit and the rights
attached thereto ("Summit  Rights") pursuant to the Rights Agreement dated as of
June 16, 1999 between  Summit and First  Chicago  Trust  Company of New York, as
Rights Agent ("Summit  Rights  Agreement")  (references to "Summit Stock" herein
shall mean the Common  Stock of Summit with  Summit  Rights  attached  thereto),
shall be unaffected by the  Reorganization and shall remain issued or issued and
outstanding, as the case may be, immediately thereafter.

       Section 1.03.       Terms of Conversion of NMBT Capital Stock.

       (a) At the Effective  Time, by virtue of the  Reorganization  and without
any action on the part of any shareholder of NMBT:

              (1) All shares of the Common Stock,  par value $0.01 per share, of
NMBT  ("NMBT  Stock")  which   immediately  prior  to  the  Effective  Time  are
beneficially  owned either  directly,  or indirectly  through a bank,  broker or
other  nominee,  by Summit or a subsidiary  of Summit or NMBT or a subsidiary of
NMBT (other than NMBT Stock held as a result of foreclosures or debts previously
contracted  and  NMBT  Stock  held in  fiduciary,  discretionary  and  custodial
accounts and other representative  capacities),  if any, or held in the treasury
of NMBT, if any, shall be canceled and retired and no cash,  securities or other
consideration  shall be payable or paid or  delivered  under this  Agreement  in
exchange for such NMBT Stock; and

              (2)  Subject to  Section  1.03(a)(1),  outstanding  shares of NMBT
Stock held as of the

                                        2

<PAGE>



Effective Time by each NMBT  Shareholder  shall be converted in accordance  with
the New Jersey Act and the Delaware  Law into the right to receive  whole shares
of  Summit  Stock  and cash in lieu of  fractional  shares  of  Summit  Stock as
follows:  the  aggregate  number  of  shares  of NMBT  Stock  held by each  NMBT
Shareholder  shall be  multiplied  by the Exchange  Ratio (as defined at Section
1.03(c) below) and (i) a NMBT Shareholder shall become entitled to receive whole
shares of Summit Stock  pursuant to this Section  1.03(a)(2)  equal in number to
the whole number which  results from the foregoing  multiplication,  and (ii) an
NMBT Shareholder  shall become entitled to receive cash pursuant to this Section
1.03(a)(2)  in lieu of a  fractional  share of Summit  Stock,  if any,  equal in
amount to the product  obtained  by  multiplying  the  fraction,  if any,  which
results from the foregoing  multiplication  by the closing price of one share of
Summit Stock on the New York Stock Exchange ("NYSE") Composite Transactions List
(as reported in The Wall Street Journal or, in the absence thereof,  as reported
by another  authoritative source mutually agreed upon by NMBT and Summit) on the
last trading day ending  prior to the  Effective  Time ("Cash In Lieu  Amount").
(The shares of Summit Stock issuable in accordance with this Section  1.03(a)(2)
are sometimes  referred to herein as the "Shares").  (The Shares and any Cash In
Lieu Amounts payable in the Reorganization, both adjusted as and if necessary in
accordance with Section 1.03(b), are sometimes  collectively  referred to herein
as the "Reorganization Consideration").

       (b) In the event that,  from the date hereof to the Effective  Time,  the
outstanding Summit Stock shall have been increased,  decreased,  changed into or
exchanged  for a  different  number  or kind of  shares  or  securities  through
reorganization, recapitalization, reclassification, stock dividend, stock split,
reverse stock split or there occur other like changes in the outstanding  shares
of Summit Stock ("Capital  Change"),  the Exchange Ratio and, if necessary,  the
form and  amount of Summit  capital  stock  issuable  in the  Reorganization  in
exchange  for NMBT Stock shall be  appropriately  adjusted to give effect to the
Capital Change.

       (c) The "Exchange Ratio" is hereby defined to be the number determined in
accordance with the following provisions of this Section 1.03(c):

              (A)   If the  Summit  Price (as  defined  at  Section  9.02(e)(ii)
                    below) is greater than  $37.01563,  the Exchange Ratio shall
                    be 0.7024;

              (B)   If the Summit  Price is equal to or greater  than  $27.35938
                    and  equal to or less than  $37.01563,  the  Exchange  Ratio
                    shall be equal to the quotient  obtained by dividing  $26.00
                    by the Summit Price; and

              (C)   If the Summit  Price is less than  $27.35938,  the  Exchange
                    Ratio shall be 0.9503.

       Section 1.04. Reservation of Summit Stock; Issuance of Shares Pursuant to
the  Reorganization.  Summit shall  reserve and make  available  for issuance to
holders of NMBT Stock in connection  with the  Reorganization,  on the terms and
subject to the conditions of this Agreement,  sufficient  shares of Summit Stock
to effect the conversion  contemplated by Section 1.03 and related terms of this
Agreement,  which shares,  when issued and delivered,  will be duly  authorized,
legally  and validly  issued,  fully paid and  non-assessable  and subject to no
preemptive  rights.  Upon  the  terms  and  subject  to the  conditions  of this
Agreement,  particularly  Sections 1.03 and 1.07,  Summit shall issue the Shares
after the Effective Time to NMBT Shareholders.

         Section 1.05. Exchange Agent Arrangements. Prior to the Effective Time,
Summit shall

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<PAGE>



appoint  Equiserve - First Chicago Trust Division,  or another entity reasonably
satisfactory to NMBT, as the exchange agent ("Exchange  Agent")  responsible for
exchanging,  in connection with and upon consummation of the  Reorganization and
subject to Sections  1.03 and 1.07,  certificates  representing  whole shares of
Summit Stock ("Summit  Certificates")  and Cash In Lieu Amounts for certificates
representing shares of NMBT Stock ("NMBT Certificates") and Summit shall deliver
to the  Exchange  Agent  sufficient  Summit  Certificates  and  cash as shall be
required to satisfy  Summit's  obligations  to NMBT  Shareholders  under Section
1.07(c), prior to the time such obligations arise.

       Section  1.06.  Effective  Time.  In  the  event  that  pursuant  to  the
Reorganization  Election Summit elects the Reorganization method provided for at
Section 1.01(a)(1), the "Effective Time" of the Reorganization shall be the hour
and the date  specified  in the  certificate  of merger of Summit and NMBT filed
with the  Secretary  of State of the  State of New  Jersey  in  accordance  with
Section  14A:10-4.1 of the New Jersey Act ("NJ Certificate") and the certificate
of merger of Summit and NMBT filed with the  Secretary  of State of the State of
Delaware  ("Delaware  Certificate")  filed in accordance with Section 252 of the
Delaware  Law,  which  such  hour and date  shall  be  identical  in both the NJ
Certificate  and the  Delaware  Certificate.  In the event that  pursuant to the
Reorganization  Election Summit elects the Reorganization method provided for at
Section 1.01(a)(2), the "Effective Time" of the Reorganization shall be the date
and time specified in Exhibit A or determined in accordance with Exhibit A.

       Section 1.07.       Exchange of NMBT Certificates.

       (a) After the Effective Time and subject to Section  1.07(c) below,  each
NMBT Shareholder  (except as provided  otherwise in Section  1.03(a)(1)  above),
upon surrender to the Exchange Agent of all NMBT Certificates  registered to the
NMBT  Shareholder,  shall be entitled  to receive in exchange  therefor a Summit
Certificate  representing  the number of whole  shares of Summit Stock such NMBT
Shareholder  becomes entitled to receive pursuant to Section  1.03(a)(2) and the
Cash In Lieu Amount, payable by check, such NMBT Shareholder may become entitled
to receive  pursuant to Section  1.03(a)(2).  Until so surrendered,  outstanding
NMBT Certificates  held by each NMBT  Shareholder,  other than NMBT Certificates
governed by Section 1.03(a)(1),  shall be deemed for all purposes (other than as
provided  below with respect to  unsurrendered  NMBT  Certificates  and Summit's
right to refuse payment of dividends or other distributions,  if any, in respect
of Summit  Stock) to  represent  only the right to  receive  the number of whole
shares of Summit Stock and the Cash In Lieu Amount,  if any,  without  interest,
determined in accordance with Section 1.03(a)(2).  Until so surrendered,  Summit
may,  at its  option,  refuse to pay to the  holders of the  unsurrendered  NMBT
Certificates dividends or other distributions,  if any, on Summit Stock declared
after  the  Effective  Time;  provided,  however,  that upon the  surrender  and
exchange of NMBT  Certificates  following a dividend  or other  distribution  on
Summit Stock there shall be paid to such NMBT  Shareholders the amount,  without
interest,  of dividends and other  distributions,  if any,  which became payable
prior to such surrender and exchange but which were not paid.

       (b) Holders of NMBT  Certificates as of the Effective Time shall cease to
be, and shall have no further rights as, shareholders of NMBT.

       (c) As promptly as practicable,  but in no event more than 10 days, after
the Exchange  Agent  receives an accurate  and  complete  list of all holders of
record of outstanding NMBT Stock as of the Effective Time ("NMBT  Shareholders")
(including the address and social security number of and the number of shares of
NMBT Stock held by each NMBT Shareholder) from NMBT ("Final  Shareholder List"),
Summit  shall  cause  the  Exchange  Agent  to  send to  each  NMBT  Shareholder
instructions  and transmittal  materials for use in surrendering  and exchanging
NMBT Certificates for

                                        4

<PAGE>



the Reorganization Consideration. If NMBT Certificates are properly presented to
the  Exchange  Agent (with proper  presentation  including  satisfaction  of all
requirements of the letter of transmittal), Summit shall as soon as practicable,
but in no event more than 10 days,  after the later to occur of such presentment
or the  receipt  by  the  Exchange  Agent  of an  accurate  and  complete  Final
Shareholder  List from NMBT cause the Exchange Agent to cancel and exchange NMBT
Certificates for Summit Certificates and Cash In Lieu Amounts, if any; provided,
however,  that if the Exchange Agent, in order to satisfy its obligations  under
the Code with respect to the reporting of dividend income to former shareholders
of NMBT, must suspend the exchange  process  provided for in the second sentence
of this Section  1.07(c) in order to preserve and report the required  reporting
information,  the 10-day exchange  requirement shall be extended 5 business days
for exchanges being processed by the Exchange Agent at the  commencement  of, or
which are received during, the period of the suspension.

       (d) At and after the  Effective  Time there shall be no  transfers on the
stock transfer books of NMBT of the shares of NMBT Stock which were  outstanding
immediately prior to the Effective Time.

       Section 1.08.  Restated  Certificate of Incorporation and By-Laws. In the
event  that  pursuant  to  the   Reorganization   Election   Summit  elects  the
Reorganization   method  provided  for  at  Section  1.01(a)(1):   the  Restated
Certificate  of  Incorporation  of  Summit in  effect  immediately  prior to the
Effective  Time  shall  be the  Restated  Certificate  of  Incorporation  of the
corporation surviving the Reorganization  ("Surviving  Corporation"),  except as
duly  amended  thereafter  and except to the extent  such is deemed by law to be
affected by the NJ Certificate;  and the By-Laws of Summit in effect immediately
prior to the Effective  Time shall be the By-Laws of the Surviving  Corporation,
except  as  duly  amended  thereafter.   In  the  event  that  pursuant  to  the
Reorganization  Election Summit elects the Reorganization method provided for at
Section 1.01(a)(2),  the certificate or articles of incorporation and by-laws of
the Surviving Corporation shall be as set forth in Exhibit A.

       Section 1.09. Board of Directors and Officers. In the event that pursuant
to the Reorganization  Election Summit elects the Reorganization method provided
for at Section 1.01(a)(1):  the Board of Directors of the Surviving  Corporation
shall  consist  of the  members  of the  Board of  Directors  of  Summit  at the
Effective Time; the officers of the Surviving  Corporation  shall consist of the
officers of Summit at the Effective  Time; and such directors and officers shall
serve  as  such  for  the  terms  prescribed  in  the  Restated  Certificate  of
Incorporation  and By-Laws of Summit,  or as otherwise  provided by law or until
their earlier deaths,  resignation or removal. In the event that pursuant to the
Reorganization  Election Summit elects the Reorganization method provided for at
Section  1.01(a)(2),  the members of the Board of Directors  and the officers of
the Surviving Corporation shall be as set forth in Exhibit A.

       Section 1.10.       NMBT Stock Options.

       (a) At the  Effective  Time,  each NMBT  Option  (as  defined  in Section
1.10(b)  below)  shall be  deemed to  constitute,  and  shall  automatically  be
converted on the terms set forth in this Section 1.10 into,  options to purchase
Summit  Stock  ("Converted   Options")  and  each  Converted  Option  (i)  shall
immediately vest to the extent the related NMBT Option was vested or as provided
in the NMBT Stock  Compensation  Plan (as defined at Section  2.01(d)(3)  below)
under  which the  related  NMBT  Option  was  granted  and in the  stock  option
agreement  by which it was  evidenced,  and (ii)  shall be  administered  in all
material  respects in accordance  with the terms and conditions  provided for in
the NMBT Stock Compensation Plan under which the related NMBT Option was granted
and in the stock option agreement by which it was evidenced;  provided, however,
that the following two

                                        5

<PAGE>



revisions  shall be made:  (A) Converted  Options held by any  Converted  Option
holder whose employment with Summit  terminates within one year of the Effective
Time,  other  than due to a  termination  by  Summit  for  cause,  shall  remain
exercisable  until the  later to occur of the  exercisability  termination  date
provided for in the particular  Converted Option or the first anniversary of the
Effective  Date;  provided  further,  however,  that no Converted  Option may be
exercised beyond the expiration date of the particular Converted Option; and (B)
Converted  Option  holders  shall have the right,  exercisable  only for 30 days
following the Effective  Time, in lieu of exercising all Converted  Options then
outstanding,  to elect to receive from Summit,  with respect to all  outstanding
Converted  Options then held by such holders,  a cash lump sum  representing the
aggregate  difference  between the exercise price of their Converted Options and
the Summit  Price.  The number of shares of Summit  Stock which may be purchased
upon exercise of a particular  Converted Option shall be the number of shares of
NMBT Stock which would have been  issuable  upon exercise in full of the related
NMBT Option  multiplied  by the  Exchange  Ratio and rounded down to the nearest
whole number ("Converted Number").  The exercise price per share of Summit Stock
purchasable  upon  exercise of a  Converted  Option  shall  equal the  aggregate
exercise  price that would have been  payable  upon an  exercise  in full of the
related  NMBT  Option  divided by the  Converted  Number  and  rounded up to the
nearest  ten-thousandth  of a dollar.  In the event a Capital Change shall occur
prior to the Effective  Time,  an  appropriate  adjustment  shall be made to the
terms  of the  NMBT  Options  at the time of the  foregoing  conversion  so that
Converted  Options give effect to the Capital  Change.  Within 45 days after the
receipt  by Summit of an  accurate  and  complete  list of all  holders  of NMBT
Options,  all  information  about  the  NMBT  Options  and the  holders  thereof
(including  the  address  and social  security  number of each such holder and a
description  of the NMBT Options held by such holder  specifying,  at a minimum,
the plan under which  issued,  type  (incentive  or  nonqualified),  grant date,
expiration  date,  exercise price and the number of shares of NMBT Stock subject
thereto)  and  copies of each form of option  agreement,  warrant  agreement  or
letter agreement entered into between NMBT and a holder of a NMBT Option (all of
the  foregoing  being  collectively  referred  to as the "Final  Option List and
Materials"),  Summit shall issue to the holders of such NMBT Options appropriate
instruments  confirming the rights of such holders with respect to Summit Stock,
on the terms and conditions provided by this Section 1.10, upon surrender of the
outstanding instruments representing such NMBT Options; provided,  however, that
Summit  shall not be obligated to issue any such  confirming  instruments  which
relate to the  issuance of Summit  Stock,  or issue any shares of Summit  Stock,
until  such  time as the  shares of  Summit  Stock  issuable  upon  exercise  of
Converted  Options shall have been  registered  with the Securities and Exchange
Commission  (the "SEC")  pursuant to an  effective  registration  statement  and
authorized  for  listing  on the  NYSE  and for  sale by any  appropriate  state
securities regulators,  which such registrations and authorizations Summit shall
use its best efforts to effect within 45 days after NMBT shall have delivered to
Summit the Final Option List and Materials. Summit shall use its best efforts to
maintain the  effectiveness  of such  registration  statement  (and maintain the
current status of the prospectus or prospectuses  contained therein) for so long
as any Converted  Options  remain  outstanding.  Summit shall take all corporate
action necessary to reserve for issuance a sufficient number of shares of Summit
Stock for delivery upon exercise of Converted Options.  Notwithstanding anything
in the foregoing to the contrary, NMBT Options intended to qualify as "incentive
stock options"  under the Code shall be converted  into  Converted  Options in a
manner consistent with the preservation of such qualification under the Code.

       (b) For purposes of this Section 1.10, "NMBT Option" is hereby defined to
mean  an  option  relating  to the  purchase  of  NMBT  Stock,  and  any  rights
appurtenant  thereto  including  Equity  Based  Rights  (as  defined  at Section
2.01(d)(2)  below),  granted under a NMBT Stock Compensation Plan (as defined at
Section  2.01(d)(3)  below),  outstanding  both on the  date  hereof  and at the
Effective Time.

                                        6

<PAGE>



       Section  1.11.  Additional  Actions.  If, at any time after the Effective
Time,  the Surviving  Corporation  shall  consider or be advised that any deeds,
bills of sale,  assignments,  assurances  or any other  actions  or  things  are
necessary or desirable to vest, perfect or confirm of record or otherwise in the
Surviving  Corporation  its right,  title or interest in, to or under any of the
rights, properties or assets of NMBT acquired or to be acquired by the Surviving
Corporation  as a result  of,  or in  connection  with,  the  Reorganization  or
otherwise  to carry  out this  Agreement,  the  officers  and  directors  of the
Surviving  Corporation  shall be authorized to execute and deliver,  in the name
and on behalf of NMBT or otherwise,  all such deeds, bills of sale,  assignments
and  assurances  and to take, in the name and on behalf of NMBT,  all such other
actions and things as may be necessary or desirable to vest,  perfect or confirm
any and all right,  title and interest in, to and under such rights,  properties
or assets in the Surviving Corporation or otherwise to carry out this Agreement.

       Section  1.12.  Unclaimed  Reorganization  Consideration.  If,  upon  the
expiration   of  one  year   following  the   Effective   Time,   Reorganization
Consideration  remains  with  the  Exchange  Agent  due to the  failure  of NMBT
Shareholders  to surrender and exchange  NMBT  Certificates  for  Reorganization
Consideration,  Summit may,  at its  election,  continue to retain the  Exchange
Agent for purposes of the  surrender and exchange of NMBT  Certificates  or take
possession of such unclaimed Reorganization Consideration,  in which such latter
case, NMBT  Shareholders who have  theretofore  failed to surrender and exchange
NMBT  Certificates  shall  thereafter  look only to Summit  for  payment  of the
Reorganization  Consideration  and the unpaid  dividends  and  distributions  on
Summit Stock declared after the Effective  Time,  without any interest  thereon.
Notwithstanding the foregoing,  none of Summit,  NMBT, the Exchange Agent or any
other  person  shall be liable to any former  holder of shares of NMBT Stock for
any property  properly  delivered to a public  official  pursuant to  applicable
abandoned property, escheat or similar laws.

       Section 1.13. Lost NMBT  Certificates.  In the event any NMBT Certificate
shall have been lost,  stolen or  destroyed,  upon the making of an affidavit of
that fact by the person  claiming such NMBT  Certificate  to be lost,  stolen or
destroyed and the posting by such person of a personal,  nonsurety  bond in such
amount as Summit may determine is reasonably  necessary as indemnity against any
claim that may be made  against it with  respect to such NMBT  Certificate,  the
Exchange  Agent will issue in exchange for such lost,  stolen or destroyed  NMBT
Certificate  the  Reorganization  Consideration  deliverable in respect  thereof
pursuant to this Agreement.


                                   ARTICLE II.
                     REPRESENTATIONS AND WARRANTIES OF NMBT

       NMBT represents and warrants to Summit as follows (where an item required
to be  disclosed  on a NMBT  Schedule is required to be disclosed on one or more
additional NMBT Schedules, or where a copy of an item required to be attached to
a NMBT  Schedule  is required  to be  attached  to one or more  additional  NMBT
Schedules,  such  disclosure  or copy need not be provided on more than one NMBT
Schedule  provided the NMBT  Schedules  with respect to which the  disclosure or
copy is required but not provided  contain a cross  reference to the location of
the  required  disclosure  or copy in the NMBT  Schedules  which  is  clear  and
unambiguous):

       Section 2.01.       Organization, Capital Stock.

       (a) Each of NMBT and its  nonbank  subsidiaries,  if any,  including  any
nonbank  subsidiaries of Bank (as defined at Section 2.01(e) below), if any (the
term  "subsidiary",  as used in this  Agreement,  shall mean any  corporation or
other organization of which 10% or more of the shares

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<PAGE>



or other  interests  having  by their  terms  ordinary  voting  power to elect a
majority of the Board of Directors or other group performing  similar  functions
with respect to such corporation or other organization is directly or indirectly
owned by NMBT or a "subsidiary"  of NMBT; the term  "indirect"  ownership  means
ownership through a succession of one or more other subsidiaries),  all of which
are listed,  together with their respective  states of incorporation  and direct
and indirect  beneficial owners, on NMBT Schedule 2.01(a), is a corporation duly
organized,  validly existing and in good standing under the laws of the state of
its  incorporation,  qualified  to  transact  business  under  the  laws  of all
jurisdictions  where it  transacts  business,  except where the failure to be so
qualified is not reasonably be expected to have a material adverse effect on (i)
the business,  results of operations,  assets or financial condition of NMBT and
its subsidiaries on a consolidated basis, or (ii) the ability of NMBT to perform
its obligations under, and to consummate the transactions  contemplated by, this
Agreement ("NMBT Material  Adverse  Effect").  However,  a NMBT Material Adverse
Effect or NMBT Material  Adverse  Change (as defined at Section 2.03 below) will
not include a change resulting from a change in law, rule, regulation, generally
accepted or regulatory  accounting  principle or other matter affecting  banking
institutions  or their holding  companies  generally or from charges or expenses
incident to the  Reorganization.  Each of NMBT and its nonbank  subsidiaries has
all  corporate  power  and  authority  and all  material  licenses,  franchises,
certificates,  permits and other governmental  authorizations  which are legally
required to own and lease its properties and assets,  to occupy its premises and
to engage in its business and  activities as presently  engaged in, and each has
complied in all material  respects with all  applicable  laws,  regulations  and
orders.

       (b) NMBT is registered  as a bank holding  company under the Bank Holding
Company Act of 1956, as amended ("BHCA").

       (c) NMBT or one of its subsidiaries is the holder and beneficial owner of
all of the  outstanding  capital  stock of all of  NMBT's  direct  and  indirect
nonbank subsidiaries.

       (d) (1) The authorized capital stock of NMBT consists of 8,000,000 shares
of Common Stock, par value $0.01 per share, of which 2,668,558 shares are issued
and outstanding as of the date hereof,  and 2,000,000 shares of Serial Preferred
Stock,  par value $0.01 per share,  of which no shares are issued or outstanding
as of the date hereof. All issued and outstanding shares of the capital stock of
NMBT and of each of its nonbank  subsidiaries  have been fully  paid,  were duly
authorized and validly issued,  are  nonassessable and have been issued pursuant
to an effective  registration  statement  under the  Securities  Act of 1933, as
amended (the  "Securities  Act") or an appropriate  exemption from  registration
under the  Securities  Act and were not issued in  violation  of the  preemptive
rights of any shareholder.

              (2)  Except  as  set  forth  in  Section  2.01(d)(1),  all  Equity
Securities  (as  defined at Section  2.01(d)(4)  below) of NMBT and its  nonbank
subsidiaries outstanding,  in existence, the subject of an agreement or reserved
for  issuance  ("Current  Equity  Securities"),  and all rights or  entitlements
appurtenant  to, based upon,  derived from or valued based on the performance or
value of Equity Securities of NMBT outstanding,  in existence, the subject of an
agreement or reserved for issuance  ("Equity  Based  Rights") are listed on NMBT
Schedule  2.01(d)(2) and all  significant  information  relating to such Current
Equity Securities (other than Common Stock) and Equity Based Rights is listed on
NMBT Schedule 2.01(d)(2) including without limitation, where applicable, name of
holder,  address  and  relationship  to  NMBT  if not an  employee  of NMBT or a
subsidiary,  date of grant, award or issuance,  expiration dates, vesting dates,
the NMBT  Stock  Plan (as  defined  in Section  2.01(d)(3)  below)  under  which
granted,  awarded or issued, any intended  qualification or  nonqualification or
other status under the Code,  those  Current  Equity  Securities or Equity Based
Rights granted in

                                        8

<PAGE>



tandem with other Current  Equity  Securities  or Equity Based Rights,  exercise
price,  number of shares,  valuation formula and performance  goals. All Current
Equity  Securities  have been (to the extent  such is  capital  stock or similar
equity  interest) fully paid,  were duly authorized and validly issued,  are (to
the extent such is capital stock or similar equity interest)  nonassessable  and
have been  issued  pursuant to an  effective  registration  statement  under the
Securities  Act  or  an  appropriate   exemption  from  registration  under  the
Securities Act and were not issued in violation of the preemptive  rights of any
shareholder.

              (3) All agreements,  contracts,  plans and  arrangements,  whether
oral or  written  or  formal  or  informal,  pursuant  to which  Current  Equity
Securities  or Equity  Based  Rights  were  granted,  awarded or issued or which
provide for the  granting,  awarding or issuance of Equity  Securities or Equity
Based  Rights or are  relevant in any fashion to Current  Equity  Securities  or
Equity Based Rights ("NMBT Stock Plan") are listed on NMBT Schedule  2.01(d)(3).
All NMBT Stock Plans constituting a compensatory  contract,  plan or arrangement
("NMBT  Stock  Compensation  Plan"),   including  all  amendments  thereto,  are
separately identified on NMBT Schedule 2.01(d)(3) and have been duly approved by
the shareholders of NMBT where required by applicable law.

              (4) "Equity  Securities"  of an issuer means (i) the capital stock
or other equity  securities  or equity  interests of such issuer,  (ii) options,
warrants, scrip, interests in, rights (including preemptive rights) to subscribe
to,  purchase or acquire,  calls on or commitments  of any character  whatsoever
relating to, or  securities  or rights  convertible  into or  exchangeable  for,
capital stock or other equity  securities or equity interests or any security or
right  convertible  into or  exchangeable  for the capital stock or other equity
security or equity interests of such issuer,  and (iii) contracts,  commitments,
obligations,  agreements,  understandings  or arrangements  entitling  anyone to
acquire  from the  issuer,  or by which such  issuer is or may  become  bound to
issue, capital stock or other equity security or equity interest or any security
or right  convertible into or exchangeable for the capital stock or other equity
security or equity interest of such issuer.

       (e) NMBT CORP owns a bank  subsidiary  named "NMBT"  ("Bank").  NMBT CORP
owns no bank  subsidiary  other than Bank  ("bank" is hereby  defined to include
commercial banks,  savings banks,  private banks,  trust companies,  savings and
loan  associations,  building  and loan  associations  and similar  institutions
receiving  deposits and making loans).  Bank is a bank duly  organized,  validly
existing,  and in  good  standing  under  the  laws of the  jurisdiction  of its
organization  and is  qualified  to  transact  business  under  the  laws of all
jurisdictions  where it  transacts  business,  except where the failure to be so
qualified is not reasonably be expected to have a NMBT Material  Adverse Effect.
Bank is duly  authorized to conduct all  activities and exercise all powers of a
commercial bank  contemplated by the laws of its  jurisdiction of  organization.
Bank is an insured bank as defined in the Federal Deposit Insurance Act, and has
all  corporate  power  and  authority  and all  material  licenses,  franchises,
certificates,  permits and other governmental  authorizations  which are legally
required to own and lease its properties and assets, to occupy its premises, and
to engage in its  business  and  activities  as  presently  engaged  in, and has
complied in all material  respects with all  applicable  laws,  regulations  and
orders.

       (f) The authorized and outstanding  capital stock of Bank is as set forth
on NMBT Schedule 2.01(f).  NMBT is the holder and beneficial owner of all of the
issued and  outstanding  Equity  Securities of Bank. All issued and  outstanding
shares of the capital stock of Bank have been fully paid,  were duly  authorized
and validly issued, are non-assessable,  and were not issued in violation of the
preemptive rights of any shareholder. All Equity Securities of Bank outstanding,
in existence, the subject of an agreement or reserved for issuance are described
in all material respects on NMBT Schedule 2.01(f).

                                        9

<PAGE>



       (g)  All  Equity  Securities  of its  direct  and  indirect  subsidiaries
beneficially  owned by NMBT or a  subsidiary  of NMBT are held free and clear of
any claims, liens, encumbrances or security interests.

       Section 2.02. Financial Statements. The financial statements (and related
notes and schedules  thereto)  contained in or  incorporated  by reference  into
NMBT's (a) annual report to shareholders  for the fiscal year ended December 31,
1998, (b) annual report on Form 10-K filed  pursuant to the Securities  Exchange
Act of 1934, as amended  ("Exchange Act") for the fiscal year ended December 31,
1998 and (c) quarterly  reports on Form 10-Q filed  pursuant to the Exchange Act
for the  fiscal  quarters  ended  March 31,  1999 and June 30,  1999 (the  "NMBT
Financial Statements") are true and correct in all material respects as of their
respective  dates and each fairly  presents  (subject,  in the case of unaudited
statements,  to recurring  audit  adjustments  normal in nature and amount),  in
accordance  with generally  accepted  accounting  principles,  the  consolidated
statements of condition,  income, changes in stockholders' equity and cash flows
of NMBT and its  subsidiaries at its respective date and for the period to which
it relates, except as may otherwise be described therein and except that, in the
case  of  unaudited  statements,   no  consolidated  statements  of  changes  in
stockholders'  equity are included.  The NMBT Financial Statements do not, as of
the dates thereof,  include any material  asset or omit any material  liability,
absolute  or  contingent,  or other  fact,  the  inclusion  or omission of which
renders the NMBT Financial Statements, in light of the circumstances under which
they were made, misleading in any respect.

       Section 2.03. No  Conflicts.  Except as set forth on NMBT Schedule  2.03,
NMBT and each of its  subsidiaries  is not in  violation or breach of or default
under, and has received no notice of violation, breach, revocation or threatened
or contemplated  revocation of or default or denial of approval under,  nor will
the  execution,  delivery and  performance  of this  Agreement  by NMBT,  or the
consummation   of   the   transactions   contemplated   hereby   including   the
Reorganization  by NMBT upon the terms provided herein (assuming  receipt of the
Required Consents, as that term is defined in Section 4.01),  violate,  conflict
with,  result in the breach of, constitute a default under, give rise to a claim
or right of termination,  cancellation, revocation of, or acceleration under, or
result in the creation or imposition of any lien, charge or encumbrance upon any
of the material rights, permits,  licenses,  assets or properties of NMBT or any
of its  subsidiaries or upon any of the Equity  Securities of NMBT or any of its
subsidiaries, or constitute an event which could, with the lapse of time, action
or inaction by NMBT or any of its  subsidiaries  or a third party, or the giving
of notice and failure to cure, result in any of the foregoing,  under any of the
terms, conditions or provisions, as the case may be, of:

        (i)     the  certificate  or  articles of  incorporation  or articles of
                association,  as  appropriate,  or by-laws of NMBT or any of its
                subsidiaries;

        (ii)    any  applicable  law,  statute,  rule,  ruling,   determination,
                ordinance or regulation of or agreement with any governmental or
                regulatory authority;

        (iii)   any judgment,  order,  writ, award,  injunction or decree of any
                court or other governmental authority; or

        (iv)    any material note, bond, mortgage,  indenture,  lease, policy of
                insurance or indemnity,  license,  contract,  agreement or other
                instrument;

to which NMBT or any of its  subsidiaries  is a party or by which NMBT or any of
its  subsidiaries  or any of their assets or properties  are bound or committed,
the consequences of which individually or

                                       10

<PAGE>



in the aggregate  could  reasonably be expected to result in a material  adverse
change in the business, results of operations,  assets or financial condition of
NMBT and its subsidiaries,  on a consolidated  basis, from that reflected in the
NMBT  Financial  Statements  as of and for the six months  ended  June 30,  1999
("NMBT  Material  Adverse   Change"),   or  enable  any  person  to  enjoin  the
transactions contemplated hereby.

       Section  2.04.   Absence  of  Undisclosed   Liabilities.   NMBT  and  its
subsidiaries  have no  liabilities,  whether  contingent or absolute,  direct or
indirect,  matured or unmatured  (including but not limited to  liabilities  for
federal,  state and local  taxes,  penalties,  assessments,  lawsuits  or claims
against NMBT or any of its subsidiaries), and no loss contingency (as defined in
Statement  of  Financial  Accounting  Standards  No.  5),  other  than (a) those
reflected in the NMBT  Financial  Statements or disclosed in the notes  thereto,
(b) commitments  made by NMBT or any of its  subsidiaries in the ordinary course
of its  business  which  are  not in the  aggregate  material  to  NMBT  and its
subsidiaries,  on a  consolidated  basis,  and (c)  liabilities  arising  in the
ordinary  course  of its  business  since  June 30,  1999,  which are not in the
aggregate material to NMBT and its subsidiaries,  on a consolidated basis. Other
than as may be set  forth on NMBT  Schedule  2.04,  neither  NMBT nor any of its
subsidiaries  has, since June 30, 1999, become obligated on any debt due in more
than one year from the date of this Agreement in excess of $100,000,  other than
intra-corporate debt and deposits received, repurchase agreements and borrowings
from the Federal Home Loan Bank of Boston entered into in the ordinary course of
business.

       Section 2.05.  Absence of Litigation;  Agreements  with Bank  Regulators.
There is no outstanding order, injunction or decree of any court or governmental
or  self-regulatory  body against or affecting  NMBT or any of its  subsidiaries
which  materially  and  adversely  affects  NMBT  and  its  subsidiaries,  on  a
consolidated  basis, and there are no actions,  arbitrations,  claims,  charges,
suits,  investigations or proceedings  (formal or informal) material to NMBT and
its  subsidiaries,  on a consolidated  basis,  pending or, to NMBT's  knowledge,
threatened,  against  or  involving  NMBT or any of its  subsidiaries  or  their
officers or directors (in their capacity as such) in law or equity or before any
court,  panel or  governmental  agency,  except as may be disclosed in the Forms
10-K  and  10-Q of NMBT  referred  to in  Section  2.02.  Neither  NMBT  nor any
subsidiary of NMBT is a party to any  agreement or  memorandum of  understanding
with,  or is a party to any  commitment  letter to, or has  submitted a board of
directors  resolution or similar  undertaking  to, or is subject to any order or
directive by, or is a recipient of any  extraordinary  supervisory  letter from,
any governmental or regulatory  authority which restricts materially the conduct
of its business,  or in any manner  relates to material  statutory or regulatory
noncompliance discovered in any regulatory  examinations,  its capital adequacy,
its  credit  or  reserve  policies  or its  management.  Neither  NMBT  nor  any
subsidiary of NMBT has been advised by any governmental or regulatory  authority
that  it  is  contemplating   issuing  or  requesting  (or  is  considering  the
appropriateness of issuing or requesting) any of the foregoing. Neither NMBT nor
any  subsidiary  of NMBT  has  failed  to  resolve  to the  satisfaction  of the
applicable  regulatory  agency any  significant  deficiencies  cited by any such
agency in its most recently completed  examination of each aspect of NMBT's or a
NMBT  subsidiary's  business nor has NMBT or any subsidiary of NMBT been advised
of any  significant  deficiencies  by any such  agency  in  connection  with any
current examination of either NMBT or a subsidiary of NMBT by any such agency.

       Section 2.06.  Brokers'  Fees.  NMBT has entered into this Agreement with
Summit as a result of direct  negotiations  without the assistance or efforts of
any finder,  broker,  financial advisor or investment banker, other than Advest,
Inc. ("Advest").  NMBT Schedule 2.06 consists of true and complete copies of all
agreements between NMBT and Advest with respect to the transactions contemplated
by this Agreement or similar transactions.

                                       11

<PAGE>



       Section  2.07.  Regulatory  Filings.  All  filings  made by NMBT  and its
subsidiaries  after  December  31,  1995 with the SEC and the  appropriate  bank
regulatory  authorities did not contain any untrue  statement of a material fact
and did not omit to state any  material  fact  required  to be stated  herein or
therein or necessary to make the statements  contained therein,  in light of the
circumstances  under which they were made,  not  misleading.  To the extent such
filings  were  subject to the  Securities  Act or  Exchange  Act,  such  filings
complied in all material  respects with the  Securities  Act or Exchange Act, as
appropriate,  and all applicable rules and regulations  thereunder of the SEC or
the Federal bank regulatory agency having securities regulatory jurisdiction, as
appropriate.  Each of the  financial  statements  (including  related  notes and
schedules  thereto)  contained in or incorporated by reference into such filings
are true and correct in all material  respects as of their  respective dates and
each fairly presents (subject, in the case of unaudited statements, to recurring
audit  adjustments  normal in nature and amount),  in accordance  with generally
accepted  accounting  principles,  the  consolidated  statements  of  condition,
income,  changes  in  stockholders'  equity  and  cash  flows  of  NMBT  and its
subsidiaries  at its  respective  date or for the  period  to which it  relates,
except as may  otherwise  be described  therein and except that,  in the case of
unaudited  statements,  no consolidated  statements of changes in  stockholders'
equity are included.  NMBT and its subsidiaries have since December 31, 1995, to
the extent legally required,  timely made all filings required by the Securities
Act and the Exchange Act, Federal and state banking laws and regulations and the
rules and  regulations of the NASD and any other  self-regulatory  organization,
and have paid all fees and assessments due and payable in connection therewith.

       Section 2.08.  Corporate  Action.  Assuming due execution and delivery by
Summit,  and subject to the requisite  approval by the  shareholders  of NMBT of
this  Agreement,  the  Reorganization  and the other  transactions  contemplated
hereby in accordance with NMBT's Amended and Restated Certificate  Incorporation
and the  Delaware  Law at a meeting of such  holders to be duly called and held,
NMBT has the corporate power and is duly  authorized by all necessary  corporate
action to execute, deliver and perform this Agreement. The Board of Directors of
NMBT has taken all action required by law, its Amended and Restated  Certificate
Incorporation,  its By-Laws or otherwise  (i) to  authorize  the  execution  and
delivery of this  Agreement  and (ii) for  shareholders  of NMBT to approve this
Agreement and the transactions  contemplated hereby including the Reorganization
by a simple  majority  of the shares  entitled  to vote at the  meeting  held in
accordance  with Section  4.03.  Assuming due  execution and delivery by and the
enforceability  against Summit of this Agreement,  this Agreement is a valid and
binding  agreement of NMBT  enforceable  in accordance  with its terms except as
such  enforcement  may be limited by  applicable  principles  of equity,  and by
bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium or other
laws of general  applicability  presently or hereafter in effect  affecting  the
enforcement of creditors' rights generally or institutions the deposits of which
are insured by the Federal Deposit Insurance  Corporation,  or the affiliates of
such  institutions.  The Board of Directors of NMBT in authorizing the execution
of this  Agreement has determined to recommend to the  shareholders  of NMBT the
approval  of this  Agreement,  the  Reorganization  and the  other  transactions
contemplated  hereby,  subject to the proviso  appearing in the last sentence of
Section 4.03 hereof.

       Section  2.09.  Absence of  Changes.  There has not been,  since June 30,
1999,  any NMBT  Material  Adverse  Change.  Except  as may be set forth in NMBT
Schedule 2.09, neither NMBT nor any of its subsidiaries has since June 30, 1999:
(a) (i)  declared,  set  aside or paid any  dividend  or other  distribution  in
respect of its Equity Securities, other than dividends from subsidiaries to NMBT
or other subsidiaries of NMBT, an ordinary cash dividend to NMBT shareholders of
$0.10  per share or less per  fiscal  quarter  and the  dividends  provided  for
herein,  or,  (ii)  directly or  indirectly  purchased,  redeemed  or  otherwise
acquired any shares of any Equity Securities;  (b) incurred current  liabilities
since  that  date  other  than in the  ordinary  course of  business;  (c) sold,
exchanged or

                                       12

<PAGE>



otherwise  disposed  of any of their  assets  except in the  ordinary  course of
business; (d) made any officers' salary increase or wage increase not consistent
with past  practices,  entered  into any  employment,  consulting,  severance or
change of  control  contract  with any  present or former  director,  officer or
salaried employee, or instituted any employee or director welfare,  bonus, stock
option,  profit-sharing,   retirement,   severance  or  other  benefit  plan  or
arrangement  or modified any of the foregoing so as to increase its  obligations
thereunder in any material  respect;  (e) suffered any taking by condemnation or
eminent  domain or other  damage,  destruction  or loss in  excess  of  $50,000,
whether or not covered by insurance,  adversely affecting its business, property
or assets, or waived any rights of value in excess of $50,000;  (f) entered into
transactions  other  than  in the  ordinary  course  of  business  which  in the
aggregate exceeded $100,000;  or (g) acquired assets or capital stock of another
company of whatsoever amount, except in a fiduciary capacity or in the course of
securing or collecting loans or leases.

       Section  2.10.  Allowance  for  Credit  Losses.  At  June  30,  1999  and
thereafter the allowances  for credit losses of NMBT and its  subsidiaries  were
and are adequate in all material respects to provide for all losses on loans and
leases  outstanding  and,  to the best of NMBT's  knowledge,  the loan and lease
portfolios of NMBT in excess of such  allowances are collectible in the ordinary
course of  business.  NMBT  Schedule  2.10  constitutes  a list of all loans and
leases made by NMBT or any of its subsidiaries that have been "classified" as to
quality by any internal or external  auditor,  accountant or examiner,  and such
list is accurate and complete in all material respects.

       Section  2.11.  Taxes  and  Tax  Returns.  Neither  NMBT  nor  any of its
subsidiaries  has at any time filed a consent  pursuant to Section 341(f) of the
Code or consented to have the provisions of Section  341(f)(2) of the Code apply
to any disposition of a subsection (f) asset (as such term is defined in Section
341(f)(4)  of the Code)  owned by NMBT or any of its  subsidiaries.  None of the
property being acquired by Summit or its subsidiaries in the  Reorganization  is
property  which  Summit or its  subsidiaries  will be required to treat as being
owned by any other person pursuant to the provisions of Section 168(f)(8) of the
Internal Revenue Code of 1954, as amended and in effect immediately prior to the
enactment of the Tax Reform Act of 1986 or is "tax-exempt  use property"  within
the  meaning  of Section  168(h)(1)  of the Code.  All  amounts  required  to be
withheld have been withheld from employees by NMBT and each of its  subsidiaries
for all periods in compliance with the tax, social  security,  unemployment  and
other applicable  withholding  provisions of applicable federal, state and local
law.  All federal,  state and local  returns (as defined  below)  required to be
filed  have  been  timely  filed by NMBT and  each of its  subsidiaries  for all
periods for which returns were due,  including  with respect to employee  income
tax withholding,  social  security,  unemployment and other applicable taxes (as
defined  below),  are  accurate,  and the  amounts  shown  thereon to be due and
payable, as well as any interest,  additions,  and penalties due with respect to
completed and settled  examinations or concluded  litigation relating to NMBT or
any of its subsidiaries,  have been paid in full or adequate  provision therefor
has been included on the books of NMBT or its appropriate subsidiary. Other than
franchise tax returns filed by NMBT with the State of Delaware, neither NMBT nor
any of its  subsidiaries  is required  to file tax returns  with any state other
than the State of  Connecticut.  Provision has been made on the books of NMBT or
its appropriate  subsidiary for all unpaid taxes, whether or not disputed,  that
may become due and payable by NMBT or any of its  subsidiaries in future periods
in respect of  transactions,  sales or services  occurring or performed prior to
the date of this Agreement. Neither the Internal Revenue Service ("IRS") nor the
State  of  Connecticut  has  audited  any  income  tax  returns  of  NMBT or its
subsidiaries. Neither NMBT nor any of its subsidiaries is subject to an audit or
review of its tax returns by any state other than the State of Connecticut. NMBT
is not and has not been a United States real  property  holding  corporation  as
defined in Section  897(c)(2) of the Code during the applicable period specified
in  Section   897(c)(1)(A)(ii)  of  the  Code.  Neither  NMBT  nor  any  of  its
subsidiaries is currently a party

                                       13

<PAGE>



to any tax  sharing  or similar  agreement  with any third  party.  There are no
material  matters,  claims,  assessments,  examinations,  notices of deficiency,
demands  for  taxes,   refund  litigation,   proceedings,   audits  or  proposed
deficiencies pending or, to NMBT's knowledge,  threatened against NMBT or any of
its  subsidiaries,  including  a  claim  or  assessment  by any  authority  in a
jurisdiction  where NMBT or any of its  subsidiaries do not file tax returns and
NMBT or any such  subsidiary  is  subject  to  taxation,  and there have been no
waivers of statutes of  limitations  or  agreements  related to  assessments  or
collection in respect of any federal, state or local taxes. Neither NMBT nor any
of its subsidiaries has agreed to or is required to make any adjustment pursuant
to  Section  481(a)  of the Code by  reason  of a change  in  accounting  method
initiated  by NMBT or any of its  subsidiaries,  and neither NMBT nor any of its
subsidiaries  has any knowledge that the IRS has proposed any such adjustment or
change in  accounting  method.  NMBT and its  subsidiaries  have complied in all
material  respects  with all  requirements  relating to  information  reporting,
including  tax  identification  number  reporting,  and  withholding  (including
back-up  withholding)  and  other  requirements  relating  to the  reporting  of
interest,  dividends and other reportable  payments under the Code and state and
local tax laws and the regulations promulgated thereunder and other requirements
relating to reporting  under federal law including  record keeping and reporting
on monetary instruments transactions.

       For purposes of this  Agreement,  "taxes" shall mean all taxes,  charges,
fees,  levies,  penalties  or other  assessments  imposed by any  United  States
Federal, state, local, or foreign taxing authority,  including,  but not limited
to, income, excise, property, sales, transfer,  franchise, payroll, withholding,
social security or other taxes,  including any interest,  penalties or additions
attributable  thereto; and "return" shall mean any return,  report,  information
return or other documents (including any related or supporting information) with
respect to taxes.

       Section 2.12. Properties. NMBT has, directly or through its subsidiaries,
good and  marketable  title to all of its  properties  and assets,  tangible and
intangible,  including those reflected in the NMBT Financial  Statements (except
individual properties and assets disposed of since June 30, 1999 in the ordinary
course  of  business),  which  properties  and  assets  are not  subject  to any
mortgage,  pledge,  lien,  charge or encumbrance  other than as reflected in the
NMBT Financial  Statements or which in the aggregate do not materially adversely
affect or impair the operation of NMBT and its  subsidiaries  on a  consolidated
basis.  NMBT  and  each of its  subsidiaries  enjoys  peaceful  and  undisturbed
possession  under all material  leases  under which it is the lessee,  where the
failure to enjoy such  peaceful and  undisturbed  possession  would be likely to
have a NMBT  Material  Adverse  Effect,  and none of such  leases  contains  any
unusual  or  burdensome  provision  which  would be  likely  to  materially  and
adversely  affect or impair the  operations of NMBT and its  subsidiaries,  on a
consolidated basis.

       Section 2.13. Condition of Properties;  Insurance.  All real and tangible
personal  properties owned or leased by NMBT or any of its subsidiaries are in a
good state of maintenance and repair, are in good operating  condition,  subject
to normal wear and tear,  conform (as to owned  properties only) in all material
respects to all  applicable  ordinances,  regulations  and zoning laws,  and are
adequate  for the  business  conducted  by NMBT or such  subsidiary  subject  to
exceptions  which  are  not,  in  the  aggregate,   material  to  NMBT  and  its
subsidiaries,  on a  consolidated  basis.  NMBT  and  each  of its  subsidiaries
maintains insurance (with companies which, to the best of NMBT's knowledge,  are
approved by all appropriate  state  insurance  regulators to sell such insurance
where purchased by NMBT) against loss relating to such properties and such other
risks as companies engaged in similar business located in Connecticut, would, in
accordance with good business practice,  be customarily insured in amounts which
are customary,  usual and prudent for corporations or banks, as the case may be,
of their size. Such policies are in full force and effect and are carried

                                       14

<PAGE>



in an amount and form and are otherwise adequate to protect NMBT and each of its
subsidiaries  from  any  adverse  loss  resulting  from  risks  and  liabilities
reasonably  foreseeable  at the date hereof,  and are disclosed on NMBT Schedule
2.13.  All  material  claims  thereunder  have  been  filed in a due and  timely
fashion.  Since December 31, 1994,  neither NMBT nor any of its subsidiaries has
been refused  insurance  for which it has applied or had any policy of insurance
terminated  (other than at its request) nor has NMBT or any subsidiary  received
notice from any insurance  carrier that (i) such  insurance  will be canceled or
that  coverage  thereunder  will be reduced or  eliminated or (ii) premium costs
with respect to such insurance will be increased,  other than premium  increases
in the ordinary course of business applicable on their terms to all insureds.

       Section 2.14.       Contracts.

       (a) Except as set forth in NMBT Schedule 2.14(a), neither NMBT nor any of
its  subsidiaries  is a party to and  neither  they nor any of their  assets are
bound by any written or oral lease or license with respect to any property, real
or personal,  as tenant or licensee involving an annual  consideration in excess
of $50,000.

       (b) Except as set forth in NMBT Schedule 2.14(b), neither NMBT nor any of
its  subsidiaries  is a party to and  neither  they nor any of their  assets are
bound by any written or oral: (i) employment or severance  contract  (including,
without  limitation,  any NMBT bargaining  contract or union agreement) or other
agreement  with any  director  or any  officer or other  employee of NMBT or any
subsidiary,  the  benefits  of which are  contingent,  or the terms of which are
materially altered,  upon the occurrence of a transaction  involving NMBT or any
of its  subsidiaries  of the nature  contemplated by this Agreement which is not
terminable without penalty by NMBT or a subsidiary,  as appropriate,  on 60 days
or less notice;  (ii) contract or commitment for capital  expenditures in excess
of $50,000 for any one project or in excess of $100,000 in the aggregate for all
projects;  (iii) contract or commitment whether for the purchase of materials or
supplies or for the performance of services involving consideration in excess of
$50,000  (including  advertising  and  consulting  agreements,  data  processing
agreements, and retainer agreements with attorneys,  accountants,  actuaries, or
other  professionals);  (iv)  contract or option to purchase or sell any real or
personal property, other than to sell OREO property,  involving consideration in
excess of $50,000; (v) agreement or plan, including any stock option plan, stock
appreciation  rights plan,  restricted  stock plan,  stock purchase plan, or any
other  non-qualified  compensation  plan,  any of the  benefits of which will be
increased,  or the vesting of the benefits of which will be accelerated,  by the
occurrence  of any of the  transactions  contemplated  by this  Agreement or the
value of any of the benefits of which will be  calculated on the basis of any of
the  transactions  contemplated  by this  Agreement,  (vi) agreement  containing
covenants that limit the ability of NMBT or any of its  subsidiaries  to compete
in any line of business or with any person,  or that involve any  restriction on
the  geographic  area in which or method by which NMBT  (including any successor
thereof) or any of its subsidiaries may carry on its business (other than as may
be required by law or any regulatory agency), (vii) agreement which by its terms
limits  the  payment of  dividends  by NMBT or any of its  subsidiaries,  (viii)
contract  (other  than  this  Agreement)  limiting  the  freedom  of NMBT or its
subsidiaries  to  engage  in  any  type  of  banking  or  bank-related  business
permissible  under law; (ix) contract,  plan or  arrangement  which provides for
payments of benefits  payable to any participant  therein or party thereto,  and
which  might  render any portion of any such  payments  or  benefits  subject to
disallowance  of deduction  therefor as a result of the  application  of Section
280G of the Code or (x) any other contract  material to the business of NMBT and
its subsidiaries,  on a consolidated  basis, and not made in the ordinary course
of business.

       (c) Neither NMBT nor any of its  subsidiaries  is a party to or otherwise
bound  by  any  contract,   agreement,  plan,  lease,  license,   commitment  or
undertaking which, in the reasonable

                                       15

<PAGE>



opinion of management of NMBT, is materially adverse, onerous, or harmful to any
aspect of the business of NMBT and its subsidiaries, on a consolidated basis.


       Section 2.15.       Pension and Benefit Plans.

       (a)  Neither  NMBT  nor any of its  subsidiaries  maintains  an  employee
pension  benefit  plan,  within  the  meaning of  Section  3(2) of the  Employee
Retirement  Income Security Act of 1974, as amended  ("ERISA"),  or has made any
contributions  to any  such  employee  pension  benefit  plan  maintained  after
December 31, 1995, except employee pension benefit plans listed in NMBT Schedule
2.15(a)  (individually a "NMBT Pension Plan" and  collectively the "NMBT Pension
Plans").  In its present form each NMBT  Pension  Plan  complies in all material
respects with all applicable  requirements  under ERISA and the Code (except for
amendments,  if any, required by legislative or regulatory changes but for which
the applicable remedial amendment period has not yet expired). Each NMBT Pension
Plan which is intended to be  qualified  and exempt  under  Sections  401(a) and
501(a) of the Code,  and the trust  created  thereunder,  are so  qualified  and
exempt  and NMBT or the  subsidiary  whose  employees  are  covered by such NMBT
Pension Plan has received from the IRS a determination  letter or opinion letter
to that  effect and such  determination  letter or  opinion  letter may still be
relied on. No event has  occurred  and there has been no  omission or failure to
act which would adversely affect such qualification or exemption (other than the
failure of NMBT or a NMBT subsidiary, or prototype plan sponsors, if applicable,
to adopt amendments,  if any, required by legislative or regulatory  changes but
for which the applicable  remedial  amendment period has not yet expired).  Each
NMBT Pension Plan has been administered and communicated to the participants and
beneficiaries  in  accordance  with its terms and  ERISA,  except  for  defects,
failures or omissions in  administration  or operation that could not reasonably
be expected to result in a material adverse effect. No employee or agent of NMBT
or any subsidiary whose employees are covered by a NMBT Pension Plan has engaged
in any action or failed to act in such manner  that,  as a result of such action
or failure, (i) the IRS could revoke, or refuse to issue (as the case may be), a
favorable  determination  as to such NMBT Pension Plan's  qualification  and the
associated  trust's  exemption (other than the failure to adopt  amendments,  if
any, required by legislative or regulatory  changes but for which the applicable
remedial  amendment period has not yet expired) or impose any material liability
or material  penalty under the Code, or (ii) a participant  or  beneficiary or a
nonparticipating  employee has been denied benefits properly due under such NMBT
Pension  Plan in a manner  that  could  reasonably  be  expected  to result in a
material liability being imposed on NMBT or any NMBT subsidiary. No NMBT Pension
Plan is  currently  or has at any time after  December  31, 1995 been subject to
Section 412 of the Code or Title IV of ERISA. To NMBT's knowledge, no person has
engaged  in any  prohibited  transaction  involving  any  NMBT  Pension  Plan or
associated  trust  within the meaning of Section 406 of ERISA or Section 4975 of
the Code. There are no pending, or to NMBT's knowledge, threatened claims (other
than  routine  claims  for  benefits)  against  the  NMBT  Pension  Plans or any
fiduciary  thereof  which would  subject  NMBT or any of its  subsidiaries  to a
material  liability.  All reports,  filings,  returns and  disclosures and other
communications  relating to any NMBT Pension Plan which have been required to be
made  to the  participants  and  beneficiaries,  the  SEC,  the  IRS,  the  U.S.
Department  of Labor or any  other  governmental  agency  pursuant  to the Code,
ERISA,  or other  applicable  statute or  regulation  have been made in a timely
manner and all such reports,  communications,  filings,  returns and disclosures
were true and correct in all material respects.  "ERISA Affiliate" where used in
this Agreement means any trade or business (whether or not  incorporated)  which
is a member  of a group of which  NMBT is a  member  and  which is under  common
control  within the meaning of Section 414 of the Code.  Neither NMBT nor any of
its subsidiaries has any material  liability under ERISA or the Code as a result
of its being a member of a group described in Sections  414(b),  (c), (m) or (o)
of the Code.

                                       16

<PAGE>



There  are  no  unfunded  benefit  or  pension  plans  or  arrangements,  or any
individual  agreements  whether  qualified  or not,  to which NMBT or any of its
subsidiaries  or ERISA  Affiliates  has any  obligation to  contribute.  No NMBT
Pension Plan is a "multiemployer  plan" as that term is defined in Section 3(37)
of ERISA. There has been no change in control of any NMBT Pension Plan.

       (b)  All  bonus,  deferred  compensation,   profit-sharing,   retirement,
pension,  stock  option,  stock  award  and stock  purchase  plans and all other
employee  benefit,  health  and  welfare  plans,   arrangements  or  agreements,
including  without  limitation  the NMBT Stock  Compensation  Plans and medical,
major medical,  disability,  life  insurance or dental plans covering  employees
generally,  other than the NMBT Pension Plans,  maintained by NMBT or any of its
subsidiaries  with an  annual  cost in  excess of  $50,000  (collectively  "NMBT
Benefit  Plans") are listed in NMBT Schedule  2.15(b)  (unless already listed in
NMBT Schedule  2.15(a) or NMBT Schedule  2.01(d)(3))  and comply in all material
respects with all applicable  requirements  imposed by the  Securities  Act, the
Exchange  Act,  ERISA,  the  Code,  and all  applicable  rules  and  regulations
thereunder.  The NMBT Benefit Plans have been  administered  and communicated to
the  participants  and  beneficiaries  in accordance with their terms and ERISA,
except for defects,  failures or omissions in  administration or operations that
could not  reasonably  be expected to result in a material  adverse  effect.  No
employee or agent of NMBT or any of its  subsidiaries  has engaged in any action
or failed to act in such manner that,  as a result of such action or failure,  a
participant  or  beneficiary  or a  nonparticipating  employee  has been  denied
benefits  properly  due  under the NMBT  Benefit  Plans in a manner  that  could
reasonably be expected to result in a material  liability  being imposed on NMBT
or any NMBT subsidiary. There are no pending, or to NMBT's knowledge, threatened
claims (other than routine  claims for benefits)  against the NMBT Benefit Plans
which would subject NMBT or any of its subsidiaries to a material liability. Any
trust which is intended to be  tax-exempt  has received a  determination  letter
from the IRS to that  effect and no event has  occurred  which  would  adversely
affect such exemption. All reports, filings, returns and disclosures relating to
the  NMBT  Benefit  Plans   required  to  be  made  to  the   participants   and
beneficiaries,  the SEC,  the IRS,  the U.S.  Department  of Labor and any other
governmental  agency pursuant to the Code, ERISA, or other applicable statute or
regulation,  if any,  have been made in a timely  manner  and all such  reports,
filings, returns and disclosures were true and correct in all material respects.

       (c) There is no pending or, to NMBT's knowledge,  threatened  litigation,
administrative  action or  proceeding  relating to any NMBT Benefit Plan or NMBT
Pension  Plan.  There  has been no  announcement  or  commitment  by NMBT or any
subsidiary  of NMBT to create an  additional  NMBT  Benefit Plan or NMBT Pension
Plan,  or to  amend a NMBT  Benefit  Plan  or  NMBT  Pension  Plan,  except  for
amendments  required by applicable law, which would materially increase the cost
of such  NMBT  Benefit  Plan or NMBT  Pension  Plan.  Except  for any  plans  or
amendments  expressly  described  on NMBT  Schedule  2.01(d)(3),  NMBT  Schedule
2.15(a) or NMBT  Schedule  2.15(b),  NMBT and its  subsidiaries  do not have any
obligations  for  post-retirement  or  post-employment  benefits  under any NMBT
Benefit Plan  (exclusive of any coverage  mandated by the  Consolidated  Omnibus
Reconciliation  Act of 1986  ("COBRA")  or any similar  state law that cannot be
amended or terminated  upon more than sixty (60) days' notice without  incurring
any liability  thereunder.  NMBT Schedule 2.15(c) consists of the following with
respect  to each  NMBT  Benefit  Plan  and  NMBT  Pension  Plan,  to the  extent
applicable: (A) the most recent annual report on the applicable form of the Form
5500 series  filed with the IRS with all the  attachments  filed,  (B) such NMBT
Benefit Plan or NMBT Pension Plan,  including all amendments  thereto,  (C) each
trust  agreement  and  insurance  contract  relating  to  such  plan,  including
amendments thereto,  (D) the most recent summary plan description for such plan,
including  amendments  thereto,  if the plan is subject to Title I of ERISA, and
(E) the most  recent  determination  letter  issued  by the IRS if such  plan is
qualified under Section 401(a) of the Code.

                                       17

<PAGE>



       Section 2.16.  Fidelity Bonds.  Since December 31, 1992, NMBT and each of
its  subsidiaries  has  continuously  maintained  fidelity  bonds  insuring them
against acts of dishonesty in such amounts as are  customary,  usual and prudent
for organizations of its size and business.  All material claims thereunder have
been filed in a due and timely  fashion.  Since December 31, 1992, the aggregate
amount of all claims under such bonds has not exceeded the policy limits of such
bonds (excluding,  except in the case of excess coverage, an amount equal to the
deductible in effect with respect to the claim,  which such  deductible  did not
exceed  $150,000) and neither NMBT nor any of its  subsidiaries  is aware of any
facts  which  would  form the  basis  of a claim  or  claims  under  such  bonds
aggregating  in excess of the  applicable  deductible  amounts under such bonds.
Neither  NMBT  nor any of its  subsidiaries  has  reason  to  believe  that  its
respective fidelity coverage will not be renewed by its carrier on substantially
the same terms as the existing  coverage,  except for possible premium increases
unrelated to NMBT's and its subsidiaries' past claim experience.

       Section  2.17.  Labor  Matters.  Hours  worked  by and  payment  made  to
employees of NMBT and each of its subsidiaries have not been in violation of the
Fair Labor  Standards Act or any applicable  law dealing with such matters;  and
all payments due from NMBT and each of its  subsidiaries  on account of employee
health and welfare  insurance  have been paid or accrued as a  liability  on the
books  of NMBT or its  appropriate  subsidiary.  NMBT  is in  compliance  in all
material respects with all other laws and regulations relating to the employment
of labor,  including all such laws and regulations  relating to NMBT bargaining,
discrimination,  civil rights,  safety and health,  plant closing (including the
Worker Adjustment  Retraining and Notification Act),  workers'  compensation and
the collection and payment of withholding and Social Security and similar taxes.
No labor  dispute,  strike or other work stoppage has occurred and is continuing
or is  to  its  knowledge  threatened  with  respect  to  NMBT  or  any  of  its
subsidiaries.  Since  December  31,  1994,  no  employee  of  NMBT or any of its
subsidiaries  has been  terminated,  suspended,  disciplined or dismissed  under
circumstances  which could constitute a material claim, suit, action,  complaint
or proceeding likely to result in a material liability.  No employees of NMBT or
any  of its  subsidiaries  are  unionized  nor  has  union  representation  been
requested  by any group of  employees  or any other  person  within the last two
years.  There are no organizing  activities  involving NMBT pending with, or, to
the  knowledge  of NMBT,  threatened  by,  any  labor  organization  or group of
employees of NMBT.

       Section 2.18. Books and Records. The minute books of NMBT and each of its
subsidiaries  contain  complete and accurate  records of and fairly  reflect all
actions taken at all meetings of the shareholders and of the boards of directors
and committees  thereof and accurately reflect all other corporate action of the
shareholders and the boards of directors and each committee  thereof.  The books
and records of NMBT and each of its subsidiaries  fairly and accurately  reflect
the  transactions  to which NMBT and each of its  subsidiaries  is or has been a
party or by which  their  properties  are  subject or bound,  and such books and
records have been properly kept and maintained.

       Section 2.19.  Concentrations  of Credit. No customer or affiliated group
of customers (a) is owed by NMBT or any  subsidiary of NMBT an aggregate  amount
equal to more than 5% of the  shareholders'  equity  of NMBT or such  subsidiary
(including deposits, other debts and contingent liabilities) or (b) owes to NMBT
or any of its  subsidiaries  an  aggregate  amount  equal to more than 5% of the
shareholders'  equity  of NMBT or such  subsidiary  (including  loans  and other
debts, guarantees of debts of third parties, and other contingent liabilities).

       Section  2.20.  Trademarks  and  Copyrights.  Neither NMBT nor any of its
subsidiaries  has received  information  that the manner in which NMBT or any of
its subsidiaries conducts its business including its current use of any material
trademark,  trade name,  service mark or copyright  could be in violation of the
asserted rights of others in any trademark,  trade name, service mark, copyright
or

                                       18

<PAGE>



other proprietary right.

       Section 2.21. Equity Interests.  Neither NMBT nor any of its subsidiaries
owns,  directly or indirectly,  except for the equity  interests of NMBT in Bank
and  the  equity  interests  disclosed  on NMBT  Schedule  2.01(a),  any  equity
interest, other than by virtue of a security interest securing an obligation not
presently in default,  in any bank,  corporation,  partnership  or other entity,
except:  (a) in a fiduciary  capacity;  or (b) an  interest  valued at less than
$25,000 acquired in connection with a foreclosure or debt previously contracted.
None of the investments  reflected in the consolidated  balance sheet of NMBT as
of  June  30,  1999,  and  none  of  such  investments  made by it or any of its
subsidiaries since June 30, 1999, is subject to any restriction  (contractual or
statutory),  other than applicable securities laws, that would materially impair
the  ability of the entity  holding  such  investment  freely to dispose of such
investment at any time, except to the extent any such investments are pledged in
the  ordinary   course  of  business   (including  in  connection  with  hedging
arrangements  or programs or reverse  repurchase  arrangements)  consistent with
prudent  banking  practice  to  secure   obligations  of  NMBT  or  any  of  its
subsidiaries.

       Section 2.22.       Environmental Matters.

       (a) Except as disclosed on NMBT  Schedule  2.22 or as may be disclosed in
the Forms 10-K and 10-Q of NMBT referred to in Section 2.02 hereof:

              (1) To NMBT's  actual  knowledge,  and except in  compliance  with
applicable  law, no Hazardous  Substances  (as  hereinafter  defined)  have been
stored, treated, dumped, spilled,  disposed,  discharged,  released or deposited
at, under or on (1) any property now owned, occupied,  leased or held or managed
in a representative or fiduciary capacity ("Present Property") by NMBT or any of
its subsidiaries, (2) any property previously owned, occupied, leased or held or
managed in a representative or fiduciary capacity ("Former Property") by NMBT or
any of its subsidiaries during the time of such previous  ownership,  occupancy,
lease;  holding or management or (3) any Participation  Facility (as hereinafter
defined)  during the time that NMBT or any of its  subsidiaries  participated in
the  management  of, or may be deemed to be or to have been an owner or operator
of, such Participation Facility;

              (2) Except in compliance with applicable law, neither NMBT nor any
of its  subsidiaries has disposed of, or arranged for the disposal of, Hazardous
Substances from any Present Property, Former Property or Participation Facility,
and to NMBT's actual knowledge, and except in compliance with applicable law, no
owner or operator of a Participation  Facility  disposed of, or arranged for the
disposal of, Hazardous Substances from a Participation  Facility during the time
that NMBT or any of its  subsidiaries  participated in the management of, or may
be deemed  to be or to have been an owner or  operator  of,  such  Participation
Facility;

              (3) To NMBT's actual knowledge,  no Hazardous Substances have been
stored, treated, dumped, spilled,  disposed,  discharged,  released or deposited
at, under or on any Loan Property (as hereinafter  defined),  nor is there, with
respect to any such Loan  Property,  any  violation of  environmental  law which
could  materially  adversely affect the value of such Loan Property to an extent
which could prevent or delay NMBT or any of its subsidiaries from recovering the
full value of its loan in the event of a foreclosure on such Loan Property.

       (b) Neither NMBT nor any  subsidiary  (i) is aware of any  investigations
contemplated,  pending or completed by any  environmental  regulatory  authority
with  respect  to any  Present  Property,  Former  Property,  Loan  Property  or
Participation Facility, (ii) has received any information

                                       19

<PAGE>



requests from any environmental  regulatory authority,  or (iii) been named as a
potentially responsible or liable party in any Superfund,  Resource Conservation
and Recovery Act, Toxic Substances  Control Act or Clean Water Act proceeding or
other equivalent state or federal proceeding.

       (c) As used in this Agreement,  (a)  "Participation  Facility" shall mean
any property or facility of which the  relevant  person or entity (i) has at any
time  participated in the management or (ii) may be deemed to be or to have been
an owner or operator,  (b) "Loan Property" shall mean any real property in which
the  relevant  person or entity holds a security  interest in an amount  greater
than  $50,000  and (c)  "Hazardous  Substances"  shall  mean  (i) any  flammable
substances,  explosives,  radioactive materials,  hazardous materials, hazardous
substances,  hazardous  wastes,  toxic  substances,  pollutants or  contaminants
defined as such in any applicable Federal or state law or regulation relating to
pollution or protection of human health or the environment  (including,  without
limitation,  ambient or indoor air, surface water, groundwater,  land surface or
subsurface strata) and (ii) friable asbestos,  polychlorinated  biphenyls,  urea
formaldehyde, and petroleum and petroleum-containing products and wastes.

       Section 2.23.  Accounting,  Tax and Regulatory Matters.  Neither NMBT nor
any of its  subsidiaries  has  taken or  agreed  to take any  action  or has any
knowledge of any fact or  circumstance  that would (i) prevent the  transactions
contemplated  hereby from qualifying as a  reorganization  within the meaning of
Section  368(a) of the Code, or (ii)  materially  impede or delay receipt of any
approval  referred to in Section 4.01 or the  consummation  of the  transactions
contemplated by this Agreement.

       Section 2.24.       Interest of Management and Affiliates.

       (a) All loans  presently on the books of NMBT or any of its  subsidiaries
to present or former  directors or executive  officers of NMBT or any subsidiary
of NMBT, or their associates,  or any members of their immediate families,  have
been made in the ordinary  course of business and on the same terms and interest
rates as those  prevailing  for comparable  transactions  with others and do not
involve  more than the normal risk of  repayment  or present  other  unfavorable
features.

       (b)  Except as set forth  and  described  in NMBT  Schedule  2.24(b),  no
present or former officer or director of NMBT or any of its  subsidiaries or any
Associated Person (as defined in Section 2.24(d) below):

              (1) has any interest in any property,  real or personal,  tangible
or  intangible,  used in or  pertaining  to the  business  of NMBT or any of its
subsidiaries except for the normal rights of a shareholder;

              (2)  has an  agreement,  understanding,  contract,  commitment  or
pending transaction relating to the purchase,  sale or lease of real or personal
property, goods, materials, supplies or services, whether or not in the ordinary
course of business, with NMBT or any of its subsidiaries ("Insider Agreements");

              (3)  has  received  from  NMBT  or  any of  its  subsidiaries  any
commitment, whether written or oral, to lend any funds to any such person;

              (4) is owed any amounts by NMBT or any of its subsidiaries  except
for deposits taken in the ordinary course of business and amounts due for normal
compensation  or  reimbursement  of  expenses  incurred  in  furtherance  of the
business of such person's employer and reimbursable

                                       20

<PAGE>



according to a policy of NMBT or such subsidiary,  as appropriate,  as in effect
immediately prior to the date hereof ("Insider Indebtedness").

       (c) The  consummation of the  transactions  contemplated  hereby will not
(either alone, or upon the occurrence of any act or event, the lapse of time, or
the giving of notice and failure to cure)  result in any payment  (severance  or
other)  or  provision  of a  benefit  becoming  due  from  NMBT  or  any  of its
subsidiaries  or any  successor or assign  thereof to any  director,  officer or
employee of NMBT or any of its  subsidiaries  or any successor or assign of such
subsidiary,  other  than  payments  and  benefits  due under the  contracts  and
agreements set forth in NMBT Schedule 2.14(a).

       (d)  "Associated  Person"  means  (i)  any  holder  of 10% of more of the
outstanding  shares of NMBT Stock, (ii) any associate (as "associate" is defined
at Rule  14a-1(a)  of the SEC) or  relative  ("relative"  for  purposes  of this
Section  2.24 is  defined as any person  having a family  relationship  with the
subject  person,  as  family  relationship  is  defined  in the  Instruction  to
Paragraph  401(d) of Regulation S-K of the SEC) of a present or former  director
or  executive  officer  of NMBT or any of its  subsidiaries,  (iii)  any  entity
controlled,  directly or indirectly,  individually  or in the aggregate,  by any
present  or  former  director  or  executive  officer  of  NMBT  or  any  of its
subsidiaries  or any  relative or  associate of any of such persons and (iv) any
entity 25% or more or the equity interests of which are owned individually or in
the aggregate by any present or former director or executive  officer of NMBT or
any of its subsidiaries or any relative or associate of any of such persons.

       Section 2.25  Registration Obligations.  Neither the NMBT nor any of its
subsidiaries is under any contractual  obligation,  contingent or otherwise,  to
register any of its securities under the Securities Act.

       Section  2.26  Corporate  Documents.   The  articles  or  certificate  of
incorporation  and  by-laws,  as  amended  to  date,  of NMBT and of each of its
subsidiaries  previously  provided to Summit constitute true and complete copies
of all articles or  certificates  of  incorporation  and by-laws,  as amended to
date,  which are  currently in full force and effect for NMBT and of each of its
subsidiaries.

       Section  2.27  Community  Reinvestment  Act  Compliance.   NMBT  and  its
subsidiaries are in substantial compliance with the applicable provisions of the
Community Reinvestment Act of 1977 and the regulations  promulgated  thereunder,
and received a CRA rating of at least  satisfactory  as of their last  completed
examination.  As of the date of this Agreement, NMBT has not been advised of the
existence of any fact or circumstance or set of facts or circumstances which, if
true, would cause NMBT or any subsidiary to fail to be in substantial compliance
with such provisions.

       Section 2.28  Business of NMBT.  Since June 30, 1999,  NMBT has conducted
its business only in the ordinary  course.  For purposes of the foregoing,  NMBT
has not, since June 30, 1999,  controlled  expenses  through (i)  elimination of
employee  benefits,  (ii)  deferral of routine  maintenance  of real property or
leased premises,  (iii)  elimination of reserves where the liability  related to
such reserve has remained,  (iv) reduction of capital improvements from previous
levels,  (v)  failure  to  depreciate  capital  assets in  accordance  with past
practice or to eliminate capital assets which are no longer used in the business
of NMBT, (vi) capitalized loan production expenses other than in accordance with
Statement  of  Financial  Accounting  Standard  No.  91, or (vii)  extraordinary
reduction or deferral of ordinary or necessary expenses.

       Section 2.29        Interest Rate Risk Management Instruments.


                                       21

<PAGE>



       (a) Set forth on NMBT Schedule 2.29(a) is a list as of the date hereof of
all interest rate swaps, caps, floors and option agreements,  and other interest
rate risk management  arrangements to which NMBT or any of its subsidiaries is a
party or by which any of their properties or assets may be bound.

       (b) All such interest rate swaps,  caps, floors and option agreements and
other  interest rate risk  management  arrangements  to which NMBT or any of its
subsidiaries  is a party or by which any of their  properties  or assets  may be
bound were entered into the ordinary  course of business and, in accordance with
prudent  banking  practice and  applicable  rules,  regulations  and policies of
regulatory  authorities and with  counterparties  believed,  at the time entered
into and at the date of this  Agreement,  to be financially  responsible and are
legal,  valid and binding  obligations  of NMBT or a subsidiary  and are in full
force and effect.  NMBT and each of its  subsidiaries  has duly performed in all
material  respects  all of its  obligations  thereunder  to the extent that such
obligations  to  perform  have  accrued,  and  there are no  material  breaches,
violations  or  defaults  or  allegations  or  assertions  of such by any  party
thereunder.

       Section  2.30.  Takeover  Laws;  Dissenters'  Rights.  NMBT has taken all
action required to be taken by it in order to exempt this Agreement,  the Option
Agreement and the  transactions  contemplated  by each from, and this Agreement,
the Option Agreement and the transactions  contemplated by each are exempt from,
the requirements of any "moratorium",  "control share", "fair price", "affiliate
transaction", "control transaction", business combination" or other antitakeover
(i) laws and  regulations  of the State of Delaware,  or (ii)  provisions in the
Amended and Restated Certificate of Incorporation or By-Laws of NMBT. Holders of
NMBT Stock do not have  dissenters' or appraisal  rights in connection  with the
execution  of this  Agreement  or the  consummation  of any of the  transactions
contemplated hereby.

       Section 2.31.  Year 2000  Compliant.  To the best  knowledge of NMBT, all
material  computer software and hardware owned or licensed by NMBT or any of its
subsidiaries  is,  or NMBT  has  taken  all  required  steps  to be,  Year  2000
compliant,  which,  for  purposes  of this  Agreement,  shall mean that the data
outside the range 1900-1999 will be correctly processed in any level of computer
hardware  or  software  including,  but not  limited  to,  microcode,  firmware,
applications programs, files and databases. All material computer software owned
or licensed by NMBT is, or NMBT has taken steps (including  obtaining warranties
from the  vendors  thereof  in respect of  compliance)  to ensure  that all such
computer  software  will be,  designed to be used prior to, during and after the
calendar  year 2000 AD and such  software  will  operate  during  each such time
period,  without error relating to date data,  specifically  including any error
relating  to,  or the  product  of,  date  data that  represents  or  references
different centuries or more than one century.


                                  ARTICLE III.
                    REPRESENTATIONS AND WARRANTIES OF SUMMIT

       Summit represents and warrants to NMBT as follows:

       Section 3.01.       Organization, Capital Stock.

       (a) Summit is a corporation duly organized,  validly existing and in good
standing under the laws of the State of New Jersey with authorized capital stock
consisting of (i) 390,000,000  shares of Common Stock, par value $.80 per share,
with the Summit Rights attached  thereto  pursuant to the Rights  Agreement,  of
which 177,061,084 shares were issued and outstanding as of August 1, 1999

                                       22

<PAGE>



and (ii) 6,000,000 shares of Preferred  Stock,  each without par value, of which
no shares are issued and outstanding and 1,500,000  shares of Series R Preferred
Stock are reserved for issuance as of the date hereof

       (b) Summit is qualified to transact  business in and is in good  standing
under the laws of all  jurisdictions  where the failure to be so qualified could
reasonably  be expected to have a material  adverse  effect on (i) the business,
results  of  operations,  assets  or  financial  condition  of  Summit  and  its
subsidiaries  on a consolidated  basis, or (ii) the ability of Summit to perform
its obligations under, and to consummate the transactions  contemplated by, this
Agreement (a "Summit  Material  Adverse  Effect").  However,  a Summit  Material
Adverse  Effect or Summit  Material  Adverse Change (as defined at Section 3.03)
will not  include a change  resulting  from a change in law,  rule,  regulation,
generally accepted or regulatory  accounting principle or other matter affecting
financial  institutions or their holding companies  generally or from charges or
expenses  incident to the  Reorganization.  The bank  subsidiaries of Summit are
duly  organized,  validly  existing and in good standing under the laws of their
jurisdiction  of  organization.  Summit  and  its  bank  subsidiaries  have  all
corporate   power  and   authority  and  all  material   licenses,   franchises,
certificates,  permits and other governmental  authorizations  which are legally
required to own and lease their respective  properties,  occupy their respective
premises,  and to  engage  in their  respective  businesses  and  activities  as
presently  engaged in,  except where the failure of such would not have a Summit
Material  Adverse Effect.  Summit and its bank  subsidiaries  have each complied
with all applicable laws,  regulations and orders except where the failure to so
comply  would  not  have a  Summit  Material  Adverse  Effect.  Summit  is  duly
registered as a bank holding company under the BHCA.

       (c) All issued  shares of the capital  stock of Summit and of each of its
bank subsidiaries have been fully paid, were duly authorized and validly issued,
are  non-assessable,  have been  issued  pursuant to an  effective  registration
statement under the Securities Act or an appropriate exemption from registration
under the  Securities  Act and were not issued in  violation  of the  preemptive
rights of any  shareholder.  Summit or one of its subsidiaries is the holder and
beneficial owner of all of the issued and outstanding  Equity  Securities of its
bank  subsidiaries.  There are no Equity  Securities of Summit  outstanding,  in
existence, the subject of an agreement, or reserved for issuance,  except as set
forth at Section  3.01(a) and except for Summit Stock issuable upon the exercise
of employee  stock options  granted  under stock option plans of Summit,  Summit
Stock issuable  pursuant to Summit's  Dividend  Reinvestment  and Stock Purchase
Plan,  Savings  Incentive  Plan,  1993  Incentive  Stock and Option  Plan,  1999
Non-Executive  Option Plan and Series R Preferred Stock issuable pursuant to the
Summit Rights Agreement.

       (d)  All  Equity  Securities  of its  direct  and  indirect  subsidiaries
beneficially  owned by Summit or a subsidiary  of Summit are held free and clear
of any claims, liens, encumbrances or security interests.

       (e) Each bank  subsidiary  of Summit is duly  authorized  to conduct  all
activities  and  exercise  all  powers  of a  commercial  bank or  savings  bank
contemplated  by the laws of its  jurisdiction of  organization.  Each such bank
subsidiary is an insured bank as defined in the Federal Deposit Insurance Act.

       Section 3.02. Financial Statements. The financial statements (and related
notes and schedules  thereto)  contained in or  incorporated  by reference  into
Summit's (a) annual report to  shareholders  for the fiscal year ended  December
31, 1998,  (b) annual  report on Form 10-K  pursuant to the Exchange Act for the
fiscal year ended December 31, 1998 and (c) quarterly reports on Form 10-Q filed
pursuant to the  Exchange Act for the fiscal  quarters  ended March 31, 1999 and
June 30,

                                       23

<PAGE>



1998 (the "Summit  Financial  Statements")  are true and correct in all material
respects as of their respective dates and each fairly presents (subject,  in the
case of unaudited  statements,  to recurring audit adjustments  normal in nature
and  amount),  in  accordance  with  generally  accepted  accounting  principles
consistently  applied,  the consolidated  balance sheets,  statements of income,
statements of  shareholders'  equity and  statements of cash flows of Summit and
its  subsidiaries  at its respective date or for the period to which it relates,
except as may  otherwise  be described  therein and except that,  in the case of
unaudited  statements,  no consolidated  statements of changes in  stockholders'
equity are  included.  The Summit  Financial  Statements do not, as of the dates
thereof, include any material asset or omit any material liability,  absolute or
contingent, or other fact, the inclusion or omission of which renders the Summit
Financial Statements,  in light of the circumstances under which they were made,
misleading in any respect.

       Section 3.03.  No  Conflicts.  Summit is not in violation or breach of or
default under,  and has received no notice of violation,  breach,  revocation or
threatened or contemplated revocation of or default or denial of approval under,
nor will the execution, delivery and performance of this Agreement by Summit, or
the consummation of the  Reorganization  by Summit upon the terms and conditions
provided herein (assuming receipt of the Required Consents),  violate,  conflict
with,  result in the breach of, constitute a default under, give rise to a claim
or right of termination,  cancellation, revocation of, or acceleration under, or
result in the creation or imposition of any lien, charge or encumbrance upon any
rights,  permits,  licenses,  assets or  properties  material  to Summit and its
subsidiaries,  on a  consolidated  basis,  or upon any of the  capital  stock of
Summit,  or constitute an event which could,  with the lapse of time,  action or
inaction  by Summit,  or a third  party,  or the giving of notice and failure to
cure,  result in any of the  foregoing,  under any of the terms,  conditions  or
provisions, as the case may be, of:

       (i)   the Restated Certificate of Incorporation or the By-Laws of Summit;

       (ii)  any law,  statute,  rule,  ruling,  determination,  ordinance,  or
             regulation of any governmental or regulatory authority;

       (iii) any judgment,  order,  writ, award,  injunction,  or decree of any
             court or other governmental authority; or

       (iv)  any material note, bond,  mortgage,  indenture,  lease,  policy of
             insurance or indemnity,  license,  contract,  agreement,  or other
             instrument;

to which Summit is a party or by which Summit or any of its assets or properties
are bound or committed,  the  consequences of which would be a material  adverse
change in the business, results of operations,  assets or financial condition of
Summit and its subsidiaries, on a consolidated basis, from that reflected in the
Summit Financial  Statements as of and for the six months ended June 30, 1999 (a
"Summit  Material  Adverse  Change"),   or  enable  any  person  to  enjoin  the
transactions contemplated hereby.

       Section 3.04.  Absence of Litigation,  Agreements  with Bank  Regulators.
There  is  no  outstanding  order,  injunction,   or  decree  of  any  court  or
governmental  or  self-regulatory  body  against  or  affecting  Summit  or  its
subsidiaries which materially and adversely affects Summit and its subsidiaries,
on a  consolidated  basis,  and  there  are no  actions,  arbitrations,  claims,
charges,  suits,  investigations or proceedings (formal or informal) material to
Summit and its subsidiaries,  on a consolidated  basis,  pending or, to Summit's
knowledge,  threatened,  against  or  involving  Summit  or  their  officers  or
directors  (in their  capacity  as such) in law or equity or before  any  court,
panel or

                                       24

<PAGE>



governmental  agency,  except as may be  disclosed in the Forms 10-K and 10-Q of
Summit  referred to in Section 3.02.  Neither Summit nor any bank  subsidiary of
Summit is a party to any agreement or memorandum of understanding  with, or is a
party to any  commitment  letter  to,  or has  submitted  a board  of  directors
resolution  or similar  undertaking  to, or is subject to any order or directive
by,  or is a  recipient  of  any  extraordinary  supervisory  letter  from,  any
governmental or regulatory  authority which restricts  materially the conduct of
its business,  or in any manner relates to its capital  adequacy,  its credit or
reserve  policies or its  management.  Neither Summit nor any bank subsidiary of
Summit, has been advised by any governmental or regulatory  authority that it is
contemplating  issuing or requesting (or is considering the  appropriateness  of
issuing or requesting) any of the foregoing. Summit and the bank subsidiaries of
Summit have resolved to the satisfaction of the applicable regulatory agency any
significant   deficiencies   cited  by  any  such  agency  in  its  most  recent
examinations of each aspect of Summit or such bank subsidiary's  business except
for examinations, if any, received within the 30 days prior to the date hereof.

       Section 3.05. Regulatory Filings. At the time of filing, all filings made
by  Summit  and its  subsidiaries  after  December  31,  1995  with  the SEC and
appropriate bank regulatory  authorities did not contain any untrue statement of
a  material  fact and did not omit to state any  material  fact  required  to be
stated herein or therein or necessary to make the statements contained herein or
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  To the extent such filings were  subject to the  Securities  Act or
Exchange Act, such filings complied in all material respects with the Securities
Act or Exchange Act, as  appropriate,  and all applicable  rules and regulations
thereunder  of the SEC.  Summit has since  December  31,  1995  timely  made all
filings required by the Securities Act and the Exchange Act, as appropriate, and
all applicable  rules and regulations  thereunder of the SEC or the Federal bank
regulatory agency having  securities  regulatory  jurisdiction,  as appropriate.
Each of the financial statements (including related notes and schedules thereto)
contained in or incorporated by reference into such filings are true and correct
in all material  respects as of their  respective dates and each fairly presents
(subject,  in the case of unaudited  statements,  to recurring audit adjustments
normal in nature and amount),  in accordance with generally accepted  accounting
principles,  the  consolidated  statements  of  condition,  income,  changes  in
stockholders'  equity  and cash  flows of  Summit  and its  subsidiaries  at its
respective date and for the period to which it relates,  except as may otherwise
be  described  therein and except that in the case of unaudited  statements,  no
consolidated statements of changes in stockholders equity is included.

       Section 3.06.       Corporate Action.

       (a) Assuming due execution and delivery by NMBT, Summit has the corporate
power and is duly  authorized  by all  necessary  corporate  action to  execute,
deliver, and perform this Agreement.  The Board of Directors of Summit has taken
all action required by law or by the Restated  Certificate of  Incorporation  or
By-Laws of Summit or otherwise to authorize  the  execution and delivery of this
Agreement.  Approval  by the  shareholders  of  Summit  of this  Agreement,  the
Reorganization  or  the  transactions  contemplated  by  this  Agreement  is not
required by  applicable  law.  Assuming  due  execution  and delivery by and the
enforceability  against NMBT of this  Agreement,  this  Agreement is a valid and
binding  agreement of Summit  enforceable in accordance with its terms except as
such  enforcement  may be limited by  applicable  principles  of equity,  and by
bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium or other
laws of general  applicability  presently or hereafter in effect  affecting  the
enforcement of creditors' rights generally or institutions the deposits of which
are insured by the Federal Deposit Insurance  Corporation,  or the affiliates of
such institutions.

       (b) In the event that  pursuant  to the  Reorganization  Election  Summit
elects the Reorganization

                                       25

<PAGE>



method provided for at Section 1.01(a)(2), the Designated Summit Subsidiary will
prior to Closing  (i) have the  corporate  power and be duly  authorized  by all
necessary corporation action to execute,  deliver and perform this Agreement and
(ii) the  Board of  Directors  and sole  shareholder  of the  Designated  Summit
Subsidiary  will have taken all  action  required  by law,  its  certificate  or
articles of  incorporation  and by-laws and otherwise to authorize the execution
and  delivery  of  this   Agreement  and  to  approve  this  Agreement  and  the
transactions  contemplated  hereby  including the  Reorganization.  Assuming due
execution  and  delivery  by and the  enforceability  against  each of the other
parties  hereto,  this  Agreement  will be a valid and binding  agreement of the
Designated Summit Subsidiary  enforceable in accordance with its terms except as
such  enforcement  may be limited by  applicable  principles  of equity,  and by
bankruptcy, insolvency, reorganization, fraudulent transfer, moratorium or other
laws of general  applicability  presently or hereafter in effect  affecting  the
enforcement  of creditors'  rights  generally or  institutions,  the deposits of
which  are  insured  by  the  Federal  Deposit  Insurance  Corporation,  or  the
affiliates of such institutions.

       Section  3.07.  Absence of  Changes.  There has not been,  since June 30,
1999, any Summit Material Adverse Change and there is no matter or fact known to
Summit  which  may  result in any such  Summit  Material  Adverse  Change in the
future.

       Section  3.08   Absence  of   Undisclosed   Liabilities.   There  are  no
liabilities,  whether  contingent  or  absolute,  direct  or  indirect,  or loss
contingencies (as defined in Statement of Financial  Accounting Standards No. 5)
other than (a) disclosed in the Summit Financial  Statements or disclosed in the
notes thereto,  (b) commitments made by Summit or any of its subsidiaries in the
ordinary  course of its  business  which are not in the  aggregate  material  to
Summit  and its  subsidiaries,  on a  consolidated  basis,  and (c)  liabilities
arising in the ordinary course of its business since June 30, 1999 which are not
in the  aggregate  material to Summit and its  subsidiaries,  on a  consolidated
basis.

       Section  3.09.  Allowance  for  Credit  Losses.  At  June  30,  1999  and
thereafter,  the allowances for credit losses of Summit and its subsidiaries are
adequate in all material  respects to provide for all losses on loans and leases
outstanding,  and  to the  best  of  Summit's  knowledge,  the  loan  and  lease
portfolios  of Summit  and its  subsidiaries  in excess of such  allowances  are
collectible in the ordinary course of business.

       Section 3.10. Accounting,  Tax and Regulatory Matters. Neither Summit nor
any of its  subsidiaries  has  taken or  agreed  to take any  action  or has any
knowledge of any fact or  circumstance  that would (i) prevent the  transactions
contemplated  hereby from qualifying as a  reorganization  within the meaning of
Section  368(a)  the Code,  or (ii)  materially  impede or delay  receipt of any
approval  referred to in Section 4.01 or the  consummation  of the  transactions
contemplated by this Agreement.

       Section  3.11.  Community  Reinvestment  Act  Compliance.  Summit and its
subsidiaries are in substantial compliance with the applicable provisions of the
Community Reinvestment Act of 1977 and the regulations  promulgated  thereunder,
and received a CRA rating of at least  satisfactory  as of their last  completed
examination.  As of the date of this Agreement, Summit and its subsidiaries have
not been advised of the existence of any fact or circumstance or set of facts or
circumstances  which, if true, would cause Summit or any bank subsidiary to fail
to be in substantial compliance with such provisions.

        Section 3.12. Year 2000 Compliant. To the best knowledge of Summit, all
computer  software  and  hardware  owned or  licensed  by  Summit  or any of its
subsidiaries is, or Summit has

                                       26

<PAGE>



taken or is taking all required  steps to be, Year 2000  compliant,  which,  for
purposes of this Agreement, shall mean that the data outside the range 1900-1999
will be  correctly  processed  in any level of  computer  hardware  or  software
including, but not limited to, microcode, firmware, applications programs, files
and  databases,  except  where the failure to be so  compliant  would not have a
Summit  Material  Adverse  Effect.  All computer  software  owned or licensed by
Summit is, or Summit has taken  steps or is taking  steps  (including  obtaining
warranties from the vendors thereof in respect of compliance) to ensure that all
computer  software  will be designed  to be used prior to,  during and after the
calendar year 2000 AD and that such software will operate  during each such time
period,  without error relating to date data,  specifically  including any error
relating  to,  or the  product  of,  date  data that  represents  or  references
different centuries or more than one century,  except where the failure to be so
designed or to so operate would not have a Summit Material Adverse Effect.


                                   ARTICLE IV.
                                COVENANTS OF NMBT

       NMBT hereby covenants and agrees with Summit that:

       Section 4.01.  Preparation of Registration Statement and Applications for
Required  Consents.  NMBT will  cooperate  with Summit in the  preparation  of a
Registration  Statement on Form S-4 (the  "Registration  Statement") to be filed
with the SEC under the  Securities Act for the  registration  of the offering of
Summit  Stock  to be  issued  as  Reorganization  Consideration  and  the  proxy
statement-prospectus   constituting   part   of   the   Registration   Statement
("Proxy-Prospectus")  that will be used by NMBT to solicit  shareholders of NMBT
for approval of the Reorganization.  In connection therewith,  NMBT will furnish
all  financial  or other  information,  including  using best  efforts to obtain
customary consents, certificates, opinions of counsel and other items concerning
NMBT,  deemed  necessary by counsel to Summit for the filing or preparation  for
filing  under  the  Securities  Act and  the  Exchange  Act of the  Registration
Statement (including the Proxy-Prospectus).  NMBT will cooperate with Summit and
provide  such  information  as  may  be  advisable  in  obtaining  an  order  of
effectiveness for the Registration  Statement,  appropriate permits or approvals
under state securities and "blue sky" laws, the required approval under the BHCA
of the Board of Governors of the Federal  Reserve  System (the "Federal  Reserve
Board") and any other  governmental  or regulatory  consents or approvals or the
taking of any other  governmental or regulatory  action  necessary to consummate
the  Reorganization  that  would  not  have a  Summit  Material  Adverse  Effect
following the Reorganization (the "Required  Consents").  Summit,  reasonably in
advance of making such  filings,  will provide NMBT and its counsel a reasonable
opportunity to comment on such filings and regulatory applications and will give
due consideration to any comments of NMBT and its counsel before making any such
filing or application,  and Summit will provide NMBT and its counsel with copies
of all such  filings  and  applications  at the time filed if such  filings  and
applications  are made at any time before the Effective Time. NMBT covenants and
agrees that all information  furnished by NMBT for inclusion in the Registration
Statement, the Proxy-Prospectus,  and all applications to appropriate regulatory
agencies for approval of the Reorganization will comply in all material respects
with the  provisions of applicable  law,  including the  Securities  Act and the
Exchange Act and the rules and regulations of the SEC  thereunder,  and together
with all  information  furnished by NMBT to Summit pursuant to this Agreement or
in  connection  with  obtaining  Required  Consents  will not contain any untrue
statement  of a  material  fact and will not  omit to state  any  material  fact
required to be stated  therein or  necessary  to make the  statements  contained
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  NMBT will furnish to Advest such information  about NMBT reasonably
available to it as Advest may reasonably request for purposes

                                       27

<PAGE>



of the opinion referred to in Section 8.07.

       Section 4.02. Notice of Adverse Changes. NMBT will promptly advise Summit
in writing of (a) any event  occurring  subsequent to the date of this Agreement
which would  render any  representation  or warranty of NMBT  contained  in this
Agreement  or the NMBT  Schedules  or the  materials  furnished  pursuant to the
Post-Signing Document List (as defined in Section 4.09), if made on or as of the
date of such event or the Closing  Date,  untrue or  inaccurate  in any material
respect,  (b) any NMBT Material  Adverse Change,  (c) any inability or perceived
inability  of NMBT to perform  or comply  with the terms or  conditions  of this
Agreement,  (d) the  institution  or  threat of  institution  of  litigation  or
administrative  proceedings involving NMBT or any of its subsidiaries or assets,
which, if determined adversely to NMBT or any of its subsidiaries,  would have a
NMBT Material Adverse Effect or an adverse material effect on the ability of the
parties to timely consummate the  Reorganization  and the related  transactions,
(e)  any  governmental  complaint,  investigation,   hearing,  or  communication
indicating that such litigation or  administrative  proceeding is  contemplated,
(f) any  written  notice of, or other  communication  relating  to, a default or
event  which,  with  notice or lapse of time or both,  would  become a  default,
received by NMBT or a subsidiary  subsequent to the date hereof and prior to the
Effective Time, under any agreement,  indenture or instrument to which NMBT or a
subsidiary  is a party or is  subject  and which is  material  to the  business,
operation or condition  (financial or otherwise) of NMBT and its subsidiaries on
a consolidated basis, and (g) any written notice or other communication from any
third party  alleging that the consent of such third party is or may be required
in connection with the transactions contemplated by this Agreement including the
Reorganization.  NMBT  agrees  that  the  delivery  of  such  notice  shall  not
constitute a waiver by Summit of any of the provisions of Articles VI or VII.

       Section 4.03.  Meeting of  Shareholders.  NMBT will call a meeting of its
shareholders for the purpose of voting upon this Agreement,  the  Reorganization
and  the  transactions   contemplated   hereby.   The  meeting  of  shareholders
contemplated  by this Section 4.03 will be held as promptly as practicable  and,
in connection therewith,  will comply with the Delaware Law and the Exchange Act
and all regulations  promulgated  thereunder governing  shareholder meetings and
proxy  solicitations.  In  connection  with such  meeting,  NMBT  shall mail the
Proxy-Prospectus  to NMBT  shareholders  and  use its  best  efforts  to  obtain
shareholder approval of this Agreement,  the Reorganization and the transactions
contemplated  hereby;  provided,  however,  that no  director  of NMBT  shall be
obligated to take an action under this Section 4.03 in such person's capacity as
a  director  if such  person has been  advised  in writing by counsel  that such
action is contrary to the fiduciary duty owed as a director.

       Section  4.04.  Copies of Filings.  Without  limiting the  provisions  of
Section  4.01,  NMBT  will  deliver  to  Summit,  at least 48 hours  prior to an
anticipated date of filing or distribution or as soon thereafter as practicable,
all documents to be filed with the SEC or any bank regulatory authority or to be
distributed in any manner to the shareholders of NMBT or to the news media or to
the  public,  other than the press  releases  and other  information  subject to
Section 10.01.

       Section 4.05. No Material Transactions.  Until the Effective Time, NMBT
will not and will not  allow  any of its  subsidiaries  to,  without  the  prior
written consent of Summit:

       (a) pay (or make a  declaration  which  creates an obligation to pay) any
cash dividends,  other than dividends from subsidiaries of NMBT to NMBT or other
subsidiaries  of NMBT except that NMBT may declare,  set aside and pay dividends
with record dates and payment dates set in accordance with NMBT's  customary and
established current practice and, with respect to individual

                                       28

<PAGE>



dividends,  at a rate at the time of declaration equal to the rate most recently
declared by Summit multiplied by 0.7024;

       (b) declare or  distribute  any stock  dividend or  authorize or effect a
stock split;

       (c) merge with, consolidate with, or sell any material asset to any other
corporation,  bank, or person (except for mergers of  subsidiaries  of NMBT into
other  subsidiaries  of NMBT) or enter  into any  other  transaction  not in the
ordinary course of the banking business;

       (d)  incur  any   liability  or   obligation   other  than   intracompany
obligations,  make or agree to make any commitment or  disbursement,  acquire or
dispose or agree to acquire or dispose of any  property  or asset  (tangible  or
intangible),  make or agree to make any contract or agreement or engage or agree
to engage in any other  transaction,  except (i)  transactions  in the  ordinary
course of business,  (ii)  transactions  not in the ordinary  course of business
involving  not more than  $50,000,  and (iii)  costs and  expenses  incurred  in
connection with the Reorganization  and other transactions  contemplated by this
Agreement;

       (e) subject any of its properties or assets to any lien,  claim,  charge,
option or encumbrance, except in the ordinary course of business and for amounts
not material in the aggregate to NMBT and its  subsidiaries,  on a  consolidated
basis;

       (f) except as permitted by Schedule 4.05(f),  pay any employee bonuses or
increase or enter into any agreement to increase the rate of compensation of any
employee at the date hereof  which is not  consistent  with past  practices  and
policies and which when  considered  with all such  increases or  agreements  to
increase constitutes an average annualized rate not exceeding four percent (4%);

       (g)  create,  adopt or  modify  any  employment,  termination,  severance
pension,  supplemental pension,  profit sharing,  bonus, deferred  compensation,
death benefit,  retirement,  stock option,  stock award, stock purchase or other
employee  or director  benefit or welfare  plan,  arrangement  or  agreement  of
whatsoever  nature,  including without limitation the NMBT Pension Plans and the
NMBT  Benefit  Plans  (collectively,  "NMBT  Plans"),  or  change  the  level of
benefits, reduce eligibility,  performance or participation standards,  increase
any payment or benefit under any NMBT Plan;

       (h) distribute,  issue, sell, award,  grant, permit to become outstanding
or enter into any agreement respecting any Equity Securities or any Equity Based
Rights  except  pursuant to the Option  Agreement or pursuant to the exercise of
director  and employee  stock  options and  warrants  granted  prior to the date
hereof under the NMBT Stock  Compensation  Plans and exercisable and outstanding
under the terms of a NMBT Stock Compensation Plan at the date of such exercise;

       (i) except in a fiduciary capacity, purchase, redeem, retire, repurchase,
or exchange, or otherwise acquire or dispose of, directly or indirectly,  any of
its Equity  Securities or Equity Based Rights,  whether pursuant to the terms of
such Equity  Securities or Equity Based Rights or  otherwise,  or enter into any
agreement providing for any of the foregoing transactions;

       (j) amend its  certificate  or articles of  incorporation  or articles of
association, as appropriate, charter or by-laws;

       (k) modify, amend or cancel any of its existing material borrowings other
than intra-corporate

                                       29

<PAGE>



borrowings  and  borrowings  of federal funds from  correspondent  banks and the
Federal Home Loan Bank of Boston or enter into any contract, agreement, lease or
understanding, or any contracts, agreements, leases or understandings other than
those in the ordinary course of business or which do not involve the creation of
any material  obligation or release of any material  right of NMBT or any of its
subsidiaries, on a consolidated basis;

       (l) create, amend, increase,  enhance,  accelerate the exercisability of,
or  release  or  waive  any  forfeitures,  terminations  or  expirations  of  or
restrictions on any rights, awards, benefits, entitlements,  options or warrants
under the NMBT  Plans  including  Equity  Securities  and  Equity  Based  Rights
outstanding ;

       (m)  except  as  permitted  by  Schedule   4.05(m),   make  any  employer
contribution  to a NMBT Plan  which  under the terms of the  particular  plan is
voluntary and within the discretion of NMBT to make;

       (n)  make  any  determination  or  take  any  action,   discretionary  or
otherwise,   under  or  with  respect  to  any  NMBT  Plan  other  than  routine
administration in accordance with past precedent;

       (o) notwithstanding any other provision of this Agreement,  enter into or
amend,  renew,  extend,  give any notice or consent  with  respect to, waive any
provision  under,  or accept  any new fees,  rates or other  costs or charges of
whatsoever nature, schedule,  exhibit or other attachment under (whether through
an action or inaction) any Insider  Agreement or any  agreement,  understanding,
contract, commitment or transaction relating to any Insider Indebtedness, except
to the extent permitted by Section 4.12 or disclosed in NMBT Schedule 2.24(b);

       (p) other than in the ordinary  course of business and in compliance with
applicable  laws and  regulations,  enter  into,  increase  or renew any loan or
credit commitment (including standby letters of credit) to any executive officer
or director of NMBT or any of its subsidiaries, any holder of 10% of more of the
outstanding  shares  of  NMBT  Stock,  or any  entity  controlled,  directly  or
indirectly, by any of the foregoing or engage in any transaction with any of the
foregoing  which is of the type or nature  sought to be  regulated  in 12 U.S.C.
ss.371c and 12 U.S.C. ss.371c-1. For purposes of this Section 4.05(p), "control"
shall have the meaning associated with that term under 12 U.S.C. ss.371c; or

       (q) take or fail to take any discretionary  action provided for under the
terms of any plan or agreement  affecting one or more  directors or employees or
any  affiliates  of such  where the  effect of such act or  failure to act is or
would be to give or confer a right or benefit not existing on the date hereof.

       Section 4.06.  Operation of Business in Ordinary Course.  NMBT, on behalf
of itself and its  subsidiaries,  covenants  and agrees  that from and after the
date hereof and until the  Effective  Time,  it and its  subsidiaries:  (a) will
carry on their business  substantially in the same manner as heretofore and will
not  institute  any unusual or novel methods of management or operation of their
properties  or business and will maintain such in their  customary  manner;  (b)
will use their best  efforts  to  continue  in effect  their  present  insurance
coverage on all properties,  assets, business and personnel;  (c) will use their
best efforts to preserve  their  business  organization  intact,  preserve their
present  relationships  with  customers,  suppliers,  and others having business
dealings  with them,  and keep  available  their  present  employees,  provided,
however,  that NMBT or any of its  subsidiaries  may  terminate any employee for
unsatisfactory  performance or other reasonable  business purpose,  and provided
further,  however,  that NMBT will  notify  and  consult  with  Summit  prior to
terminating any

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of the five highest paid  employees of NMBT;  (d) will use their best efforts to
continue to maintain  fidelity bonds insuring NMBT and its subsidiaries  against
acts of  dishonesty  by each of their  employees  in such amounts (not less than
present coverage) as are customary, usual and prudent for corporations or banks,
as the case may be, of their  size;  and (e) will not  change  their  methods of
accounting  in  effect  at June 30,  1999,  or change  any of their  methods  of
reporting  income and  deductions  for Federal  income tax  purposes  from those
employed in the  preparation of their Federal income tax returns for the taxable
year ended December 31, 1998, except as required by changes in laws, regulations
or generally accepted accounting  principles or changes that are to a preferable
accounting  method,  and  approved  in writing by NMBT's  independent  certified
public accountants.

       Section 4.07.  Further  Actions.  NMBT will: (a) execute and deliver such
instruments  and take such other  actions as Summit  may  reasonably  require to
carry out the intent of this Agreement; (b) use all reasonable efforts to obtain
consents of all third parties and  governmental  bodies  necessary or reasonably
desirable  for  the  consummation  of  the  transactions  contemplated  by  this
Agreement;  (c) diligently  support this Agreement in any proceeding  before any
regulatory  authority  whose  approval of any of the  transactions  contemplated
hereby  is  required  or  reasonably  desirable  or  before  any  court in which
litigation in respect  thereof is pending;  and (d) use its best efforts so that
the  other  conditions  precedent  to the  obligations  of  Summit  set forth in
Articles VI and VII hereof are satisfied.

       Section 4.08.  Cooperation.  Until the Effective  Time, NMBT will give to
Summit and to its representatives,  including its accountants, KPMG Peat Marwick
LLP, and its legal counsel,  full access during normal  business hours to all of
its property,  documents,  contracts and records  relevant to this Agreement and
the  Reorganization,  will provide such information with respect to its business
affairs and properties as Summit from time to time may reasonably  request,  and
will cause its managerial employees,  and will use its best efforts to cause its
counsel  and  independent  certified  public  accountants,  to be  available  on
reasonable request to answer questions of Summit's  representatives covering the
business and affairs of NMBT or any of its subsidiaries.

       Section 4.09.  Copies of Documents.  As promptly as practicable,  but not
later than 30 days after the date hereof, NMBT will furnish to or make available
to  Summit  all the  documents,  contracts,  agreements,  papers,  and  writings
referred to in the NMBT  Schedules or called for by the list attached  hereto as
Exhibit C (the "Post-Signing Document List").

       Section 4.10.  Applicable Laws. NMBT and its subsidiaries  will use their
best efforts to comply promptly with all requirements which federal or state law
may impose on NMBT or any of its subsidiaries with respect to the Reorganization
and will promptly cooperate with and furnish information to Summit in connection
with any such requirements  imposed upon Summit or on any of its subsidiaries in
connection with the Reorganization.

       Section  4.11.  Agreements  of  Affiliated  Shareholders.  NMBT agrees to
furnish to Summit,  not later than 10 business days prior to the date of mailing
of the  Proxy-Prospectus,  a writing  setting  forth the names of those  persons
(which will include all  individual  and  beneficial  ownership of NMBT Stock by
such persons and also identifies the manner in which all such beneficially owned
shares of NMBT Stock are  registered  on the stock  record books of NMBT) who in
the written  opinion of counsel to NMBT (which  opinion need not be furnished to
Summit),  constitute  all the  affiliates  of NMBT for the  purposes of Rule 145
under the  Securities  Act (an "NMBT  Affiliate").  NMBT  agrees to use its best
efforts (i) to cause each NMBT  Affiliate to enter into an  agreement  effective
upon the execution thereof, satisfactory in form and substance to Summit and (y)
substantially  in the form of Exhibit  D-1 with  respect to  Affiliates  who are
directors or officers of

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<PAGE>



NMBT or a subsidiary  of NMBT, or (z)  substantially  in the form of Exhibit D-2
with  respect to  Affiliates  who are not  directors  or  officers  of NMBT or a
subsidiary  of  NMBT  (an  "Affiliate  Agreement"),  and  (ii) to  furnish  such
Affiliate  Agreements  to Summit no later than 5 business days prior to the date
of mailing of the Proxy-Prospectus.

       Section  4.12.  Loans and  Leases  to  Affiliates.  All loans and  leases
hereafter  made by  NMBT or any of its  subsidiaries  to any of its  present  or
former  directors or executive  officers or their respective  related  interests
shall be made only in the ordinary  course of business and on the same terms and
at the same interest rates as those prevailing for comparable  transactions with
others and shall not involve  more than the normal risk of  repayment or present
other unfavorable features.

       Section 4.13.  Confidentiality.  All  information  furnished by Summit to
NMBT or its  representatives  pursuant  hereto  shall  be  treated  as the  sole
property  of Summit  and, if the  Reorganization  shall not occur,  NMBT and its
representatives  shall return to Summit all of such written  information and all
documents,  notes,  summaries  or  other  materials  containing,  reflecting  or
referring  to,  or  derived  from,  such  information,   except  that  any  such
confidential  information or notes or abstracts therefrom presented to the Board
of Directors  of NMBT or any  committee  thereof for the purpose of  considering
this Agreement,  the Reorganization and the related transactions may be kept and
maintained by NMBT with other records of Board,  and Board  committee,  meetings
subject to a continuing obligation of confidentiality. NMBT shall, and shall use
its best efforts to cause its  representatives  to, keep  confidential  all such
information,  and shall not directly or indirectly use such  information for any
purposes other than the  performance of this  Agreement.  The obligation to keep
such  information  confidential  shall continue for five years from the date the
proposed Reorganization is abandoned and shall not apply to: (i) any information
which (x) was legally in NMBT's  possession  prior to the disclosure  thereof by
Summit, (y) was then generally known to the public, or (z) was disclosed to NMBT
by a  third  party  not  bound  by an  obligation  of  confidentiality;  or (ii)
disclosures  made as  required  by law.  It is  further  agreed  that if, in the
absence of a  protective  order or the  receipt of a waiver  hereunder,  NMBT is
nonetheless,  in the  written  opinion  of its  outside  counsel,  compelled  to
disclose  information  concerning Summit to any tribunal or governmental body or
agency or else stand  liable for  contempt or suffer  other  censure or penalty,
NMBT may disclose  such  information  to such tribunal or  governmental  body or
agency without liability  hereunder and shall so notify Summit in advance to the
extent  practicable.  This Section 4.13 shall  survive any  termination  of this
Agreement.

       Section 4.14. Dividends. NMBT will coordinate with Summit the declaration
of any dividends and the record and payment dates thereof so that the holders of
NMBT Stock will not be paid two  dividends  for a single  calendar  quarter with
respect to their shares of NMBT Stock and any shares of Summit Stock they become
entitled  to receive in the  Reorganization  or fail to be paid one  dividend in
each calendar  quarter between the date hereof and the Effective Time. NMBT will
notify  Summit  at least  five  business  days  prior to any  proposed  dividend
declaration date.

       Section 4.15.  Acquisition  Proposals.  NMBT agrees that neither NMBT nor
any of its subsidiaries nor any of the respective officers and directors of NMBT
or its  subsidiaries  shall,  and NMBT shall  direct and use its best  effort to
cause its employees,  affiliates, agents and representatives (including, without
limitation,  any investment  banker,  broker,  financial or investment  advisor,
attorney  or  accountant  retained by NMBT or any of its  subsidiaries)  not to,
initiate, solicit or encourage, directly or indirectly, any inquiries, proposals
or offers with respect to, or engage in any negotiations or discussions with any
person,  provide  any  nonpublic  information,  or  authorize  or enter into any
agreement  or  agreement  in  principle  concerning,  or  recommend,  endorse or
otherwise  facilitate  any  effort  or  attempt  to  induce  or  implement,  any
Acquisition Proposal (as defined below);

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<PAGE>



provided however, that the Board of Directors of NMBT may furnish or cause to be
furnished  nonpublic   information   directly  or  through  its  representatives
concerning an Acquisition  Proposal,  if such Board of Directors has determined,
after having consulted with outside counsel and been advised of its legal rights
to the effect,  that the failure to provide  such  nonpublic  information  would
cause the members of such Board of Directors to breach  their  fiduciary  duties
under applicable laws, and,  provided,  further,  that NMBT shall first obtain a
confidentiality  agreement  in  customary  form  and  containing  at  least  the
confidentiality  provisions  set forth at Sections  4.13 and 5.08.  "Acquisition
Proposal"  is hereby  defined to be any offer,  including  an exchange  offer or
tender offer, or proposal concerning a merger, consolidation,  or other business
combination or takeover transaction involving NMBT or any of its subsidiaries or
the  acquisition of any assets  (otherwise than as permitted by Section 4.05) or
securities of NMBT or any of its  subsidiaries.  NMBT will immediately cease and
cause to be terminated any existing activities,  discussion or negotiations with
any parties conducted heretofore with respect to any of the foregoing. NMBT will
take the necessary  steps to inform the  individuals or entities  referred to in
the first  sentence  hereof of the  obligations  undertaken in this Section.  In
addition, NMBT will notify Summit by telephone to its chief executive officer or
general  counsel  promptly upon receipt of any  communication  with respect to a
proposed  Acquisition  Proposal with another  person or receipt of a request for
information  from any  governmental  or regulatory  authority  with respect to a
proposed  acquisition  of NMBT or any of its  subsidiaries  or assets by another
party,  and  will   immediately   deliver  as  soon  as  possible  by  facsimile
transmission,  receipt acknowledged,  to the Summit officer notified as required
above a copy of any document  relating  thereto promptly after any such document
is received by NMBT.

       Section 4.16 Tax Opinion Certificates.  NMBT shall execute and deliver to
Thompson  Coburn any tax  opinion  certificate  reasonably  required by Thompson
Coburn in  connection  with the  issuance  of the Tax  Opinions  (as  defined at
Section  6.03),  dated  as of the  date  of  effectiveness  of the  Registration
Statement  and as of the Closing Date (and as of the date the Closing  occurs if
different than the Closing  Date),  and NMBT shall use its best efforts to cause
each of its  executive  officers,  directors and holders of five percent (5%) or
more of outstanding NMBT Stock (including shares  beneficially  held) to execute
and deliver to Thompson Coburn any tax opinion  certificate  reasonably required
by Thompson  Coburn in  connection  with the  issuance of one or more of the Tax
Opinions,  dated as of the date of effectiveness  of the Registration  Statement
and as of the Closing  Date (and as of the date the Closing  occurs if different
than the Closing Date).

       Section 4.17.  Directors' and Officers'  Insurance.  NMBT and each of its
subsidiaries  has taken or will take all requisite  action  (including,  without
limitation,  the  making of claims and the giving of  notices)  pursuant  to its
directors'  and  officers'   liability   insurance   policy  or  policies  ("D&O
Insurance")  in order to  preserve  all rights  thereunder  with  respect to all
matters  (other than matters  arising in connection  with this Agreement and the
transactions contemplated hereby) occurring prior to the Effective Time that are
known to NMBT.  NMBT shall renew any  existing  D&O  Insurance  or purchase  any
"discovery period" D&O Insurance provided for thereunder at Summit's request.

       Section 4.18.       Conforming Entries.

       (a)  Notwithstanding  that NMBT believes  that NMBT and its  subsidiaries
have  established  reserves and taken all provisions for possible loan and lease
losses required by generally accepted accounting principles and applicable laws,
rules and  regulations,  NMBT recognizes that Summit may have adopted  different
loan, accrual and reserve policies  (including loan classification and levels of
reserves for possible  loan and lease  losses).  From and after the date of this
Agreement,  NMBT and Summit  shall  consult and  cooperate  with each other with
respect to  conforming  the loan,  accrual and reserve  policies of NMBT and its
subsidiaries to those policies of Summit, as specified in each case

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in writing to NMBT, based upon such consultation and as hereinafter provided.

       (b) In  addition,  from and  after the date of this  Agreement,  NMBT and
Summit shall consult and cooperate  with each other with respect to  determining
appropriate  accruals,  reserves and charges for NMBT to  establish  and take in
respect of excess equipment  write-off or write-down of various assets and other
appropriate charges and accounting  adjustments taking into account the parties'
business plan following the Reorganization, as specified in each case in writing
to NMBT, based upon such consultation and as hereinafter provided.

       (c) NMBT and Summit  shall  consult  and  cooperate  with each other with
respect to determining  the amount and the timing for  recognizing for financial
accounting  purposes NMBT's expenses of the Reorganization and the restructuring
charges,  if  any,  related  to  or  to  be  incurred  in  connection  with  the
Reorganization.

       (d) With respect to clauses (a) through (c) of this Section 4.18,  (i) it
is the objective of NMBT and Summit that such  reserves,  accruals,  charges and
divestitures,  if any, to be taken shall be consistent  with generally  accepted
accounting principles, and (ii) NMBT shall not be obligated to make a particular
conforming entry (A) effecting financial  statements as at or for periods ending
December 31, 1999 or earlier,  or (B) if the particular  entry is not capable of
being reversed upon a termination of this Agreement or if the entry would have a
material adverse effect on NMBT.

       Section 4.19 Cooperation with Policies and Procedures. NMBT, prior to the
Effective  Time,  shall (i) consult and  cooperate  with  Summit  regarding  the
implementation  of those policies and  procedures  established by Summit for its
governance and that of its subsidiaries and not otherwise  referenced in Section
4.18 of this Agreement,  including, without limitation,  policies and procedures
pertaining to the accounting,  asset/liability management,  audit, credit, human
resources,  treasury and legal functions,  and (ii) at the reasonable request of
Summit,  conform NMBT's  existing  policies and  procedures in respect  thereof,
provided that NMBT shall not be required to conform a policy or procedure (y) if
such would cause NMBT or any of its  subsidiaries to be in violation of any law,
rule, regulation or requirement of any governmental  regulatory authority having
jurisdiction over NMBT or any of its subsidiaries  affected  thereby,  or (z) if
such  conforming  change is not capable of being  reversed upon a termination of
this  Agreement or if the change would have a material  adverse effect on NMBT's
financial statements.

       Section 4.20  Environmental  Reports.  NMBT shall  disclose to Summit all
matters of the types described in Section 2.22 hereof which NMBT would have been
required  to  disclose to Summit on the date hereof if known to NMBT on the date
hereof,  as such become known to NMBT between the date hereof and the  Effective
Time. In addition,  Summit may at its expense perform, or cause to be performed,
a phase one  environmental  investigation,  an asbestos  survey,  or both of the
foregoing,  (i) within 90 days following the date of this Agreement, on all real
property owned,  leased or operated by NMBT or any of its subsidiaries as of the
date of this Agreement (but excluding space in retail or similar  establishments
leased by NMBT for automatic  teller  machines or leased bank branch  facilities
where the space leased by NMBT comprises less than 20% of the total space leased
to all tenants of such  property),  and (ii) within 15 days after being notified
by  NMBT  of  the  acquisition  or  lease  of  any  real  property  by it or its
subsidiaries after the date of this Agreement,  on the real property so acquired
or leased (but  excluding  space in retail or similar  establishments  leased by
NMBT for automatic  teller machines or leased bank branch  facilities  where the
space  leased by NMBT  comprises  less than 20% of the total space leased to all
tenants of such property).  If the results of a phase one investigation (whether
requested by NMBT or Summit) indicate, in the reasonable opinion of Summit, that
additional investigation is warranted, Summit may at its expense,

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<PAGE>



within 15 days after  receipt of the  particular  phase one  report,  perform or
cause to be performed a phase two  investigation  on the property or  properties
deemed  by  Summit  to  warrant  such  additional  study or  notify  NMBT and an
environmental consulting firm within 15 days after the receipt of the particular
phase one report that the environmental consulting firm should promptly commence
a phase  two  investigation.  If the  cost  of  taking  all  remedial  or  other
corrective  actions and measures (as required by  applicable  law, as reasonably
recommended by phase one or phase two  investigation  reports (without regard to
who  requested  such  reports)  or as may be prudent  in light of serious  life,
health or safety concerns), if any, is in the aggregate in excess of $1,000,000,
as reasonably  estimated by an environmental expert retained for such purpose by
Summit at its sole expense,  or if the cost of such actions and measures  cannot
be so  reasonably  estimated  by such  expert to be such amount or less with any
reasonable degree of certainty,  Summit shall have the right pursuant to Section
9.02(d)(3) of this Agreement to terminate this Agreement.

       Section 4.21        [Reserved]

       Section 4.22.  Dividend  Equivalency.  In the event the number determined
pursuant  to  Section  1.03(c)  to be the  Exchange  Ratio is  greater  than the
multiplier set forth at Section  4.05(a),  shareholders of record of NMBT at the
Effective Time shall become entitled to receive a cash payment per share of NMBT
Stock  held by them at the  Effective  Time  equal in amount  to the  difference
between  (i) the  dividends  per share  NMBT  would be able to pay  pursuant  to
Section 4.05(a) if the multiplier stated therein were such number,  and (ii) the
dividends  per share  actually  paid by NMBT  pursuant to Section  4.05(a).  Any
payment which NMBT  shareholders may become entitled to receive pursuant to this
Section 4.22 shall be distributed by Summit simultaneously with the distribution
of the Reorganization Consideration provided for in Article I.


                                   ARTICLE V.
                               COVENANTS OF SUMMIT

       Summit hereby covenants and agrees with NMBT that:

       Section 5.01.  Approvals and Registrations.  Based on such assistance and
cooperation of NMBT as Summit shall reasonably request, Summit will use its best
efforts to prepare and file (a) with the SEC, the  Registration  Statement,  (b)
with  the  Federal   Reserve  Board,   an   application   for  approval  of  the
Reorganization,  and (c) with the NYSE,  an  application  for the listing of the
shares of Summit Stock  issuable  upon the  Reorganization,  subject to official
notice  of  issuance,  and  (d)  with  any  state  regulatory  authority  having
jurisdiction  over  the  Reorganization,   applications  for  such  consents  or
approvals as may be required for consummation of the  transactions  contemplated
by this  Agreement,  except that Summit shall have no  obligation  to file a new
registration  statement  or  a  post-effective  amendment  to  the  Registration
Statement  covering any  reoffering of Summit Stock by NMBT  Affiliates.  Summit
covenants and agrees that all  information  furnished by Summit for inclusion in
the  Registration  Statement,  the  Proxy-Prospectus,  and all  applications and
submissions for the Required  Consents will comply in all material respects with
the provisions of applicable law,  including the Securities Act and the Exchange
Act and the rules and  regulations of the SEC and the Federal  Reserve Board and
will not contain any untrue  statement  of a material  fact and will not omit to
state any material fact  required to be stated  therein or necessary to make the
statements  contained  therein,  in light of the circumstances  under which they
were made, not  misleading.  Summit will use its reasonable best efforts to seek
the effectiveness of the Registration Statement. Summit will

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<PAGE>



furnish to Advest such information  about Summit  reasonably  available to it as
Advest may reasonably request for purposes of the opinion referred to in Section
8.07.

       Section 5.02. Notice of Adverse Changes. Summit will promptly advise NMBT
in writing of (a) any event  occurring  subsequent to the date of this Agreement
which would render any  representation  or warranty of Summit  contained in this
Agreement or the Summit Schedules, if made on or as of the date of such event or
the Closing Date, untrue or inaccurate in any material  respect,  (b) any Summit
Material Adverse Change,  (c) any inability or perceived  inability of Summit to
perform  or  comply  with the terms or  conditions  of this  Agreement,  (d) the
institution or threat of institution of litigation or administrative  proceeding
involving Summit or its assets which, if determined  adversely to Summit,  would
have a Summit  Material  Adverse  Effect  or a  material  adverse  effect on the
Reorganization,  (e) any governmental  complaint,  investigation,  or hearing or
communication  indicating that such litigation or  administrative  proceeding is
contemplated,  (f) any written notice of, or other communication  relating to, a
default or event  which,  with notice or lapse of time or both,  would  become a
default,  received  by Summit  subsequent  to the date  hereof  and prior to the
Effective Time, under any agreement,  indenture or instrument to which Summit is
a party or is  subject  and which is  material  to the  business,  operation  or
condition  (financial  or  otherwise)  of  Summit  and  its  subsidiaries  on  a
consolidated  basis, and (g) any written notice or other  communication from any
third party  alleging that the consent of such third party is or may be required
in connection with the transactions contemplated by this Agreement including the
Reorganization.  Summit  agrees  that the  delivery  of such  notice  shall  not
constitute a waiver by NMBT of any of the provisions of Articles VI or VIII.

       Section 5.03.  Copies of Filings.  Summit shall promptly  provide to NMBT
and its counsel copies of the application  filed with the Federal Reserve Board,
all  reports  filed  by it with  the SEC on  Forms  10-Q,  8-K and  10-K and all
documents to be distributed in any manner to the shareholders of Summit.

       Section 5.04. Further Actions.  Summit will: (a) execute and deliver such
instruments and take such other actions as NMBT may reasonably  require to carry
out the  intent of this  Agreement;  (b) use all  reasonable  efforts  to obtain
consents of all third parties and  governmental  bodies  necessary or reasonably
desirable  for  the  consummation  of  the  transactions  contemplated  by  this
Agreement;  (c) diligently  support this Agreement in any proceeding  before any
regulatory  authority  whose  approval of any of the  transactions  contemplated
hereby  is  required  or  reasonably  desirable  or  before  any  court in which
litigation in respect  thereof is pending;  and (d) use its best efforts so that
the other conditions  precedent to the obligations of NMBT set forth in Articles
VI and VIII hereof are satisfied.

       Section 5.05. Applicable Laws. Summit will use its best efforts to comply
promptly with all  requirements  which federal or state law may impose on Summit
with respect to the  Reorganization and will promptly cooperate with and furnish
information to NMBT in connection with any such  requirements  imposed upon NMBT
or on any of its subsidiaries in connection with the Reorganization.

       Section 5.06. Unpaid NMBT Dividends.  By virtue of the Reorganization and
without  further action on anyone's part,  Summit shall assume the obligation of
NMBT to pay  dividends,  if any, on NMBT Stock which have a record date prior to
the Effective Time but which are not payable until after the Effective Time.

       Section 5.07. Cooperation.  Until the Effective Time, Summit will provide
such information

                                       36

<PAGE>



with respect to its business  affairs and  properties  as NMBT from time to time
may reasonably  request,  and will cause its managerial  employees,  counsel and
independent  certified public  accountants to be available on reasonable request
to answer questions of NMBT's representatives  covering the business and affairs
of Summit or any of its subsidiaries.

       Section  5.08.  Confidentiality.  All  information  furnished  by NMBT to
Summit or its  representatives  pursuant  hereto  shall be  treated  as the sole
property  of NMBT and,  if the  Reorganization  shall not occur,  Summit and its
representatives  shall  return to NMBT all of such written  information  and all
documents,  notes,  summaries  or  other  materials  containing,  reflecting  or
referring  to,  or  derived  from,  such  information,   except  that  any  such
confidential  information or notes or abstracts therefrom presented to the Board
of Directors of Summit or any committee  thereof for the purpose of  considering
this Agreement,  the Reorganization and the related transactions may be kept and
maintained by Summit with other records of Board, and Board committee,  meetings
subject to a continuing  obligation of confidentiality.  Summit shall, and shall
use its best efforts,  to cause its  representatives  to, keep  confidential all
such information,  and shall not directly or indirectly use such information for
any purposes  other than the  performance of this  Agreement.  The obligation to
keep such information  confidential  shall continue for five years from the date
the  proposed  Reorganization  is  abandoned  and shall  not  apply to:  (i) any
information which (x) was legally in Summit's possession prior to the disclosure
thereof  by  NMBT,  (y) was  then  generally  known  to the  public,  or (z) was
disclosed  to  Summit  by  a  third  party  not  bound  by  an   obligation   of
confidentiality;  or (ii)  disclosures  made as  required  by law. It is further
agreed that if, in the absence of a protective  order or the receipt of a waiver
hereunder,  Summit  is  nonetheless,  in the  written  opinion  of its  counsel,
compelled  to  disclose   information   concerning   NMBT  to  any  tribunal  or
governmental  body or agency or else stand  liable for  contempt or suffer other
censure or penalty,  Summit may disclose  such  information  to such tribunal or
governmental body or agency without liability hereunder and shall so notify NMBT
in  advance to the extent  practicable.  This  Section  5.08 shall  survive  any
termination of this Agreement.

       Section 5.09. Further Transactions. Summit continually evaluates possible
acquisitions  and  may  prior  to the  Effective  Time  enter  into  one or more
agreements  providing for, and may  consummate the  acquisition by it of another
bank,  association,  bank holding  company,  savings and loan holding company or
other company (or the assets thereof) for consideration  that may include Summit
Stock. In addition, prior to the Effective Time, Summit may, depending on market
conditions and other factors,  otherwise determine to issue Equity Securities or
other securities for financing purposes.  Notwithstanding the foregoing,  Summit
will  not  take  any  such  action  that  would  (i)  prevent  the  transactions
contemplated  hereby from qualifying as a  reorganization  within the meaning of
Section  368(a) of the Code or (ii)  materially  impede or delay  receipt of any
Required Consent or the  consummation of the  transactions  contemplated by this
Agreement for more than 60 days.

       Section 5.10.       Indemnification.

       (a) Summit shall  indemnify  persons who served as directors and officers
of NMBT or any  subsidiary of NMBT on or before the Effective  Time with respect
to   liabilities   and  claims  (and  related   expenses,   including  fees  and
disbursements of counsel) made against them resulting from their service as such
prior to the Effective Time in accordance  with and subject to the  requirements
and other provisions of the Restated Certificate of Incorporation and By-Laws of
Summit and the certificate or articles of  incorporation  and by-laws of NMBT or
the  applicable  subsidiary  of  NMBT,  all as in  effect  on the  date  of this
Agreement and to the extent  permitted by law, and Summit shall advance expenses
in  matters  that may be  subject  to  indemnification  in  accordance  with its
Restated

                                       37

<PAGE>



Certificate of Incorporation and By-Laws in effect on the date of this Agreement
and any applicable provisions of law.

       (b) Subject to NMBT's  obligation set forth at Section 4.17: For a period
of six (6) years after the Effective  Time,  Summit will use its best efforts to
provide  to the  persons  who served as  directors  or  officers  of NMBT or any
subsidiary of NMBT on or before the Effective Time insurance against liabilities
and claims (and related expenses) made against them resulting from their service
as such prior to the Effective  Time  comparable in coverage to that provided by
Summit to its own directors and officers,  but, if not available on commercially
reasonable terms, then coverage  substantially  similar in all material respects
to the  insurance  coverage  provided  to them in such  capacities  at the  date
hereof;  provided,  however, that in no event shall Summit be required to expend
more than 200% of the current  amount  expended by NMBT on an annual  basis (the
"Insurance  Amount") to maintain or procure insurance  coverage pursuant hereto,
and,  further  provided,  that if Summit is unable  to  maintain  or obtain  the
insurance called for by this Section 5.10,  Summit shall use its best efforts to
obtain as much comparable insurance as is available for the Insurance Amount.

       (c) This  Section 5.10 shall be construed as an agreement as to which the
directors  and  officers  of NMBT and its  subsidiaries  referred  to herein are
intended to be third party  beneficiaries  and shall be  enforceable by the such
persons and their heirs and representatives.

       Section 5.11.       Employee Matters.

       (a) After the  Effective  Time,  Summit may in its  discretion  maintain,
terminate,  merge or  dispose of the NMBT  Plans;  provided,  however,  that any
action taken by Summit shall  comply with ERISA and any other  applicable  laws,
including  laws  regarding the  preservation  of employee  pension  benefit plan
benefits and, provided further,  that if Summit maintains a defined contribution
plan,  defined  benefit  plan or health and welfare  plan  available  to all its
employees  generally which is similar to a NMBT Plan which is,  respectively,  a
defined  contribution  plan,  defined  benefit  plan or health and welfare  plan
available to all NMBT employees generally, then, if such NMBT Plan is terminated
by Summit or is otherwise rendered inactive by Summit, Summit shall offer to the
former  employees  of NMBT  affected by such plan  termination  or  cessation of
activity the opportunity to participate in the similar plan of Summit.

       (b) Summit assumes all obligations under deferred  compensation  plans of
NMBT but shall have the right to terminate  such plans  following  the Effective
Time with respect to future compensation deferrals.

       (c) Summit agrees that the severance  plan of NMBT shall remain in effect
following the Effective Time  notwithstanding the provisions of Section 5.11 and
shall apply according to its terms to persons  employed by NMBT at the Effective
Time.

       Section 5.12. Tax Opinion Certificates.  Summit shall execute and deliver
to Thompson Coburn any tax opinion  certificate  reasonably required by Thompson
Coburn in connection with the issuance of the Tax Opinions, dated as of the date
of effectiveness  of the Registration  Statement and as of the Closing Date (and
as of the date the Closing occurs if different than the Closing Date).

       Section 5.13.  Additional  Tax Opinion.  NMBT shall be entitled to seek a
tax opinion  satisfactory  to it in form and content  from legal  counsel of its
choice in addition to the Tax Opinion, but receipt of such tax opinion shall not
be a  condition  to  NMBT's  closing  of  the  Reorganization  or to  any  other
obligation of NMBT hereunder.

                                       38

<PAGE>




                                   ARTICLE VI.
              CONDITIONS PRECEDENT TO THE RESPECTIVE OBLIGATIONS OF
                                 SUMMIT AND NMBT

       The  respective  obligations  of Summit and NMBT under this  Agreement to
consummate the  Reorganization  are subject to the simultaneous  satisfaction of
all the following  conditions,  compliance with which or the occurrence of which
may  only be  waived  in  whole  or in part in  writing  by  Summit  and NMBT in
accordance with Section 10.09:

       Section 6.01.  Receipt of Required  Consents.  Summit and NMBT shall have
received  the  Required  Consents;  the  Required  Consents  shall  not,  in the
reasonable  opinion of Summit,  contain  restrictions or limitations which would
materially adversely affect the financial condition of Summit after consummation
of the Reorganization;  the Required Consents and the transactions  contemplated
hereby shall not be contested  by any federal or state  governmental  authority;
and the Required Consents needed for the Reorganization shall have been obtained
and shall not have been withdrawn or suspended.

       Section  6.02.  Effective   Registration   Statement.   The  Registration
Statement  shall  have  been  declared  effective  by the  SEC;  no  stop  order
suspending  the  effectiveness  of the  Registration  Statement  shall have been
issued and remain in effect;  and no proceeding for that purpose shall have been
initiated  or, to the  knowledge  of Summit or NMBT,  shall be  contemplated  or
threatened by the SEC.

       Section  6.03.  Tax  Matters.   At  the  time  of  effectiveness  of  the
Registration  Statement  and at the  Closing  Date (and at the date the  Closing
occurs if different than the Closing Date),  Summit and NMBT shall have received
from Thompson Coburn an opinion (the "Tax Opinion"),  substantially  in the form
of  Exhibit  E to the  effect  that (a) the  Reorganization  will  constitute  a
tax-free  reorganization  within the meaning of Section  368(a) of the Code, (b)
except with respect to  fractional  share  interests,  holders of NMBT Stock who
receive  solely Summit Stock in the  Reorganization  will not recognize  gain or
loss for  federal  income  tax  purposes,  (c) the  basis of such  Summit  Stock
(including any fractional share for which cash is received) will equal the basis
of the NMBT Stock for which it is exchanged  and (d) the holding  period of such
Summit Stock  (including any  fractional  share for which cash is received) will
include the holding period of the NMBT Stock for which it is exchanged, assuming
that such NMBT Stock is a capital  asset in the hands of the  holder  thereof at
the Effective Time.

In addition,  no condition  or set of facts or  circumstances  shall exist which
will either (y) preclude any of the parties to this  Agreement  from  satisfying
the terms or conditions of, or assumptions made in, the Tax Opinion, as the case
may be, or (z) result in any of the  factual  assumptions  contained  in the Tax
Opinion being untrue.

       Section 6.04.  Absence of Litigation.  No  investigation  by any state or
federal agency, and no action, suit, arbitration or proceeding before any court,
state or federal agency,  panel or governmental or regulatory body or authority,
shall  have  been  instituted  or  threatened  against  Summit  or  any  of  its
subsidiaries,  or  NMBT or any of its  subsidiaries,  that  is  material  to the
Reorganization or to the financial condition of Summit and its subsidiaries on a
consolidated basis or NMBT and its subsidiaries on a consolidated  basis, as the
case may be. No order, decree,  judgment,  or regulation shall have been entered
or law or regulation adopted by any such agency,  panel, body or authority which
enjoined or has a material adverse effect upon the Reorganization or

                                       39

<PAGE>



on the  financial  condition of Summit and its  subsidiaries  on a  consolidated
basis or NMBT and its subsidiaries on a consolidated basis, as the case may be.

       Section 6.05. NYSE Listing. The NYSE shall have indicated that the shares
of Summit Stock to be issued in the Reorganization are to be listed on the NYSE,
subject to official notice of issuance.



                                  ARTICLE VII.
                CONDITIONS PRECEDENT TO THE OBLIGATIONS OF SUMMIT

       The obligation of Summit to consummate the  Reorganization  is subject to
the  simultaneous  satisfaction of all of the following  conditions,  compliance
with  which or the  occurrence  of which  may be  waived  in whole or in part by
Summit in writing in accordance with Section 10.09:

       Section  7.01. No Adverse  Changes.  There shall not have occurred at any
time after June 30, 1999 any NMBT Material  Adverse  Change or any material loss
or damage to the properties of NMBT or any of its  subsidiaries,  whether or not
insured, which materially affects the ability of NMBT and its subsidiaries, on a
consolidated basis, to conduct their business.

       Section 7.02.  Representations and Covenants.  Except with respect to (i)
matters resulting from transactions specifically contemplated by this Agreement,
(ii) matters  resulting from  transactions  or actions  permitted or required by
this  Agreement,  and  (iii)  changes  resulting  from a  change  in law,  rule,
regulation,  generally  accepted or  regulatory  accounting  principle  or other
matter affecting banking  institutions or their holding  companies  generally or
from charges or expenses incident to the Reorganization: all representations and
warranties  made by  NMBT in this  Agreement  and  the  NMBT  Schedules  and the
material furnished pursuant to the Post-Signing  Document List shall be true and
correct in all material  respects on the date of this  Agreement and on the date
the Closing occurs with the same force and effect as if such representations and
warranties  were  being  made on such date.  NMBT  shall  have  complied  in all
material  respects  with all  covenants and  agreements  contained  herein to be
performed by NMBT.

       Section  7.03.  Secretary's  Certificate.  NMBT shall have  furnished  to
Summit a  certificate  dated  the  date the  Closing  occurs  to which  shall be
attached  copies of all  resolutions  adopted or minutes of actions taken by the
Board of  Directors  (including  committees  thereof) and  shareholders  of NMBT
relating to this  Agreement,  the Option  Agreement and the  Reorganization  and
related transactions, which such certificate shall be signed by the Secretary of
NMBT and certify to the  satisfaction of the condition set forth in Section 7.09
and the truth,  correctness,  completeness  and continuing  effectiveness of all
resolutions   and  actions   contained  or  referenced  in  the   aforementioned
attachments.

       Section 7.04. Officer's Certificate.  NMBT shall have furnished to Summit
a certificate  signed by the Chief Executive Officer of NMBT, dated the date the
Closing  occurs,  certifying to the  satisfaction of the conditions set forth at
Sections 6.01,  6.02 (last clause),  6.03 (last  paragraph) and Section 6.04, as
they relate to NMBT, and at Sections 7.01, 7.02, 7.07 and 7.10.

       Section 7.05.  Opinion of NMBT's  Counsel.  Summit shall have received an
opinion of counsel to NMBT,  dated the date the  Closing  occurs and  reasonably
satisfactory in form and substance to counsel for Summit.

                                       40

<PAGE>



       Section 7.06.       [Reserved].

       Section 7.07.  Consents to NMBT  Contracts.  All  consents,  approvals or
waivers, in form and substance reasonably satisfactory to Summit, required to be
obtained  in  connection  with the  Reorganization  from  other  parties to each
mortgage, note, lease, permit, franchise, loan or other agreement or contract to
which  NMBT or any of its  subsidiaries  is a party or by  which  they or any of
their assets or properties may be bound or committed, which contract is material
to the  business,  franchises,  operations,  assets or condition  (financial  or
otherwise) of NMBT and its subsidiaries on a consolidated basis, shall have been
obtained.

       Section 7.08.  FIRPTA  Affidavit.  NMBT shall have delivered to Summit an
affidavit  of an  executive  officer of NMBT dated the date the  Closing  occurs
stating,  under penalties of perjury, that NMBT is not and has not been a United
States real  property  holding  company (as defined in Section  897(c)(2) of the
Code) during the applicable period specified in Section  897(c)(1)(A)(ii) of the
Code.

       Section 7.09.  Shareholder  Approval.  The  shareholders  of NMBT, at the
meeting  contemplated by this Agreement,  shall have authorized and approved the
Reorganization  and this  Agreement and all  transactions  contemplated  by this
Agreement as and to the extent  required by all applicable  laws and regulations
and the provisions of NMBT's Amended and Restated  Certificate of  Incorporation
and By-Laws.

       Section 7.10. Absence of Regulatory Agreements. Neither NMBT nor any NMBT
subsidiary  shall be a party to any  agreement or  memorandum  of  understanding
with, or commitment letter to, or board of directors  resolution submitted to or
similar undertaking made to, or be subject to any order or directive by, or be a
recipient of any  extraordinary  supervisory  letter from, any  governmental  or
regulatory  authority which  restricts  materially the conduct of its respective
business or has a material  adverse effect upon the  Reorganization  or upon the
financial  condition of Bank or of NMBT and its  subsidiaries  on a consolidated
basis,  and neither NMBT nor Bank shall have been advised by any governmental or
regulatory authority that such authority is contemplating issuing or requesting,
or  considering  the  appropriateness  of  issuing  or  requesting,  any  of the
foregoing.

The receipt of the documents  required by this Article VII by Summit shall in no
way  constitute  a waiver by Summit of any of the  provisions  of or its  rights
under this Agreement.


                                  ARTICLE VIII
                 CONDITIONS PRECEDENT TO THE OBLIGATION OF NMBT

       The obligation of NMBT to consummate the Reorganization is subject to the
simultaneous  satisfaction of all of the following  conditions,  compliance with
which or the  occurrence  of which  may be waived in whole or in part by NMBT in
writing in accordance with Section 10.09:

       Section  8.01. No Adverse  Changes.  There shall not have occurred at any
time after June 30, 1999 any Summit Material Adverse Change or any material loss
or  damage to the  properties  of Summit  or its  subsidiaries,  whether  or not
insured, which materially affects the ability of Summit and its subsidiaries, on
a consolidated basis, to conduct their business.

       Section 8.02.  Representations and Covenants.  Except with respect to (i)
matters resulting from transactions specifically contemplated by this Agreement,
(ii)  transactions  or actions  permitted or required by this  Agreement,  (iii)
changes resulting from a change in law, rule, regulation,

                                       41

<PAGE>



generally accepted or regulatory  accounting principle or other matter affecting
banking  institutions  or their holding  companies  generally or from charges or
expenses incident to the Reorganization: all representations and warranties made
by  Summit  in this  Agreement  and in the  Summit  Schedules  shall be true and
correct in all material  respects on the date of this  Agreement and on the date
the Closing occurs with the same force and effect as if such representations and
warranties were made on such date and Summit shall have complied in all material
respects  with all covenants and  agreements  contained  herein or therein to be
performed by Summit;  provided,  however,  that no  representation,  warranty or
covenant  of Summit  shall be  construed  to limit or prohibit  any  business or
financing  activities  of  Summit  including  by way  of  illustration  and  not
limitation,  the entry by Summit  after the date  hereof into any  agreement  to
acquire any assets or any company or other  entity,  the issuance of any debt or
equity  securities  in public or private  offerings,  the  issuance  of Series R
Preferred  Stock  pursuant to the Summit  Rights  Agreement,  the  redemption or
repurchase  by Summit of its capital  stock,  the Summit  Rights or the Series R
Preferred  Stock  issuable  pursuant  to the Summit  Rights  Agreement,  and any
transactions reasonably necessary or appropriate in connection therewith, and no
such  business  or  financing   activity  shall   constitute  a  breach  of  any
representation,  warranty or covenant of Summit; provided further, however, that
Summit  agrees  that it will not  permit  any  such  transaction  to  cause  any
unreasonable delay in the consummation of the Reorganization.

       Section 8.03.       Secretary's Certificate.

       (a) Summit shall have furnished to NMBT a certificate  dated the date the
Closing occurs to which shall be attached copies of all  resolutions  adopted or
minutes  of  actions  taken by the  Board  of  Directors  (including  committees
thereof) of Summit  relating to this  Agreement,  the Option  Agreement  and the
Reorganization and related transactions,  which such certificate shall be signed
by the Secretary of Summit and certify to the truth,  correctness,  completeness
and  continuing  effectiveness  of all  resolutions  and  actions  contained  or
referenced in the aforementioned attachments.

       (b) In the event that  pursuant  to the  Reorganization  Election  Summit
elects  the  Reorganization  method  provided  for at  Section  1.01(a)(2),  the
Designated  Summit  Subsidiary shall have furnished to NMBT a certificate  dated
the date the Closing occurs to which shall be attached copies of all resolutions
adopted  or  minutes  of  actions  taken by the  Board of  Directors  (including
committees  thereof)  and  shareholders  of  the  Designated  Summit  Subsidiary
relating to this Agreement,  the Reorganization and related transactions,  which
such  certificate  shall be signed by the  Secretary  of the  Designated  Summit
Subsidiary and certify to the satisfaction of the condition set forth at Section
8.09  applicable  to  the  Designated   Summit  Subsidiary  and  to  the  truth,
correctness,  completeness  and continuing  effectiveness of all resolutions and
actions contained or referenced in the aforementioned attachments.

       Section 8.04. Officer's Certificate.  Summit shall have furnished to NMBT
a certificate signed by the Chairman,  Vice Chairman,  President or an Executive
Vice President of Summit,  dated the date the Closing occurs,  certifying to the
satisfaction  of the  conditions  set forth at Sections 6.01 and 6.02,  the last
paragraph of Section 6.03, and Sections 6.04 and 6.05, as they relate to Summit,
and Sections 8.01, 8.02 and 8.08.

       Section  8.05.  Opinion of Summit  Counsel.  NMBT shall have  received an
opinion of the General Counsel of Summit,  dated the date the Closing occurs and
reasonably satisfactory in form and substance to counsel for NMBT.


                                       42

<PAGE>



       Section 8.06.       [Reserved]

       Section 8.07. Fairness Opinion. The Proxy-Prospectus shall have contained
the favorable signed opinion of Advest,  dated the date of the  Proxy-Prospectus
or a date not more than five business days prior thereto, regarding the fairness
from a financial point of view of the Exchange Ratio to the shareholders of NMBT
in the Reorganization.

       Section 8.08. Absence of Regulatory Agreements. Neither Summit nor any of
its bank  subsidiaries  shall  be a party  to any  agreement  or  memorandum  of
understanding  with, or commitment  letter to, or board of directors  resolution
submitted  to or  similar  undertaking  made to, or be  subject  to any order or
directive by, or be a recipient of any  extraordinary  supervisory  letter from,
any governmental or regulatory  authority which restricts materially the conduct
of Summit's business or has a material adverse effect upon the Reorganization or
upon the financial  condition of Summit and its  subsidiaries  on a consolidated
basis,  and  neither  Summit  nor any of its bank  subsidiaries  shall have been
advised by any  governmental  or  regulatory  authority  that such  authority is
contemplating  issuing or requesting,  or  considering  the  appropriateness  of
issuing or requesting, any of the foregoing.

       Section 8.09. NMBT Shareholder Approval. The shareholders of NMBT, at the
meeting  contemplated by this Agreement,  shall have authorized and approved the
Reorganization  and this  Agreement and all  transactions  contemplated  by this
Agreement as and to the extent  required by all applicable  laws and regulations
and the provisions of NMBT's Amended and Restated Certificate  Incorporation and
By-laws and in the event that  pursuant to the  Reorganization  Election  Summit
elects the  Reorganization  method  provided for at Section  1.01(a)(2) the sole
shareholder  of the  Designated  Summit  Subsidiary  shall have  authorized  and
approved the Reorganization and this Agreement and all transactions contemplated
by this  Agreement  as and to the extent  required  by all  applicable  laws and
regulations and the provisions of the Designated Summit Subsidiary's certificate
or articles of incorporation and by-laws.

The receipt of the  documents  required by this Article VIII by NMBT shall in no
way  constitute a waiver by NMBT of any of the provisions of or its rights under
this Agreement.


                                   ARTICLE IX
                           CLOSING; TERMINATION RIGHTS

       Section 9.01. Closing.  The closing of the Reorganization (the "Closing")
shall take place on the date which is 45  business  days after the last to occur
of the following  ("Scheduled  Date"),  unless Summit shall designate a date for
the Closing which is prior to the Scheduled Date in a writing ("Closing Notice")
designating a Determination Date in accordance with Section 9.02(e)(i) below and
delivered to NMBT at least five (5) business  days prior to the date  designated
therein for Closing,  or unless prior to the Scheduled Date the parties agree to
a different date:

        (i)     the  date  of  the  approval  of  the   Reorganization   by  the
                shareholders of NMBT in accordance with Section 7.09;

        (ii)    if the  transactions  contemplated  by this  Agreement are being
                contested in any legal proceeding, the date that such proceeding
                has been brought to a conclusion  favorable,  in the judgment of
                Summit  and  NMBT,  to  the  consummation  of  the  transactions
                contemplated  herein or such prior date as Summit and NMBT shall
                elect, whether or not

                                       43

<PAGE>



                such proceeding has been brought to a conclusion; or

        (iii)   the date of receipt of the last of the Required  Consents or the
                date  that  all   waiting   periods   required   by  statute  or
                incorporated into such Required Consents have expired;

and the date of Closing  determined in accordance with the foregoing  provisions
is referred to herein as the "Closing Date". The Closing shall take place at the
office of Summit,  301 Carnegie  Center,  Princeton,  New Jersey,  commencing at
10:00 a.m.  on the date the  Closing  is held,  unless  the  parties  agree to a
different place or commencement time. At the Closing,  the parties will exchange
certificates,  legal opinions and other documents for the purpose of determining
whether the  conditions  precedent to the  obligations  of the parties set forth
herein  have been  satisfied  or  waived.  In the  event  that  pursuant  to the
Reorganization Election Summit elected the Reorganization method provided for at
Section 1.01(a)(1), Summit shall, after all such conditions to Closing have been
satisfied or waived,  cause the NJ Certificate to be filed with the Secretary of
State of the State of New Jersey and the Delaware  Certificate  to be filed with
the  Secretary of State of the State of Delaware.  In the event that pursuant to
the Reorganization  Election Summit elected the  Reorganization  method provided
for at Section  1.01(a)(2),  Summit shall,  after all such conditions to Closing
have been  satisfied or waived,  cause the  appropriate  certificate  of merger,
articles  of merger,  or both to be filed with the proper  state  jurisdictional
authorities  to  effect  the  Reorganization  intended  by this  Agreement.  All
proceedings  to be taken and all  documents to be executed and  delivered by all
parties  at the  Closing  shall be  deemed  so  taken,  executed  and  delivered
simultaneously,  and no  proceedings  shall be  deemed  taken  or any  documents
executed or delivered until all have been taken, executed or delivered.

       Section 9.02.       Termination Rights.

       (a) The Board of Directors of NMBT or Summit may terminate this Agreement
in the event that:

              (1)  the  shareholders  of  NMBT at the  meeting  of  shareholders
contemplated  by  Section  4.03,   called  for  the  purpose  of  approving  the
Reorganization,  this  Agreement  and  the  transactions  contemplated  by  this
Agreement,  upon voting,  shall have failed to approve the Reorganization,  this
Agreement and the transactions contemplated hereby by the requisite vote;

              (2) a material breach of a warranty,  representation,  covenant or
agreement made by the other party in this Agreement shall have occurred and such
breach has not been  cured,  or is not  capable of being  cured,  within 30 days
after written notice of the existence thereof shall have been given to the other
party (a "Material  Breach") (provided that the terminating party is not then in
Material Breach of this Agreement);

              (3)  NMBT's  investment  banker is unable  to  deliver  to NMBT by
January 31, 2000 the opinion required by Section 8.07; or

              (4) the Closing is not  consummated  on or before the later of (i)
July 1, 2000,  unless the  failure of such  occurrence  shall be due solely to a
Material  Breach by the party seeking to terminate this Agreement or the failure
of such party to fulfill a condition to Closing provided for herein, or (ii) the
Scheduled  Date,  if the last  event  required  to occur  pursuant  to the first
sentence  of  Section  9.01 for the  setting  of the  Scheduled  Date shall have
occurred on or before August 1, 2000.

       (b) If either party shall refuse to close on the Closing Date because all
the conditions to its

                                       44

<PAGE>



obligation to close set forth in Article VI shall not have been met, the parties
shall conduct the Closing as promptly as practicable  after all such  conditions
have been satisfied.  In the event the failure of such a condition is due to one
or more  Material  Breaches,  the Board of  Directors of a party not in Material
Breach  may,  during  the  period  any such  Material  Breach  remains  uncured,
terminate this  Agreement by giving  written  notice of such  termination to the
other party.

       (c) If either party shall refuse to close on the Closing Date because all
the conditions to its obligation to close set forth in Article VII or VIII shall
not have been met (other  than a failure of the  condition  set forth at Section
7.09 or 8.09 due to the circumstances set forth in Section  9.02(a)(1) hereof or
a failure of the  condition  set forth at Section 8.07 due to the  circumstances
set forth at Section  9.02(a)(3)  hereof):  (i) the  parties  shall  conduct the
Closing  as  promptly  as  practicable  after  all  such  conditions  have  been
satisfied,  and (ii) the Board of Directors of such party may, during the period
the failed  condition  continues,  terminate  this  Agreement by giving  written
notice of such  termination  to the other  party  unless  such party  itself has
failed to satisfy a condition to the other party's  Closing  obligation or is in
Material Breach.

       (d) The Board of Directors of Summit may terminate this Agreement:

              (1) at any time if NMBT does not  execute  and  deliver the Option
Agreement by the day immediately following the date hereof;

              (2)  at any  time  prior  to  the  meeting  of  NMBT  shareholders
contemplated  by  Section  4.03,  if the  Board of  Directors  of NMBT  fails to
recommend   approval  of  this  Agreement  and  the   Reorganization  and  other
transactions  contemplated hereby in the Proxy-Prospectus  ("Recommendation") or
withdraws,  modifies or changes,  or votes to  withdraw,  modify or change,  its
Recommendation  or its intention to make the  Recommendation  as represented and
warranted at Section 2.08; and

              (3) as provided at Section 4.20.

       (e) In the event the Summit  Price is less than  $26.39 and the  quotient
obtained by dividing the Summit Price by $32.1875 is more than .15 less than the
quotient obtained by dividing the Determination  Date Index Price (as defined at
(iii)  below) by the Starting  Date Index Price (as defined at (iv) below),  the
Board of  Directors of NMBT shall have the right,  exercisable  only until 11:59
p.m. on the third  business day  following the  Determination  Date to terminate
this  Agreement by giving Summit notice of such  termination,  referring to this
Section 9.02(e), and this Agreement shall be terminated provided Summit receives
such notice prior to the time and day set forth above in this  Section  9.02(e).
For purposes of this Section 9.02(e):

       (i)    "Determination  Date" means the date which is seven  business days
              prior to the  Scheduled  Date or,  if  Summit  delivers  a Closing
              Notice to Bank  pursuant to Section  9.01,  the date  specifically
              designated  by Summit as the  Determination  Date in such  Closing
              Notice,  which date shall be not more than ten business days prior
              to the Closing Date.

       (ii)   "Summit  Price" means the average of the closing prices of a share
              of  Summit  Stock  on the  NYSE  Composite  Transactions  List (as
              reported in The Wall Street Journal or, in the absence thereof, as
              reported by another  authoritative  source mutually agreed upon by
              NMBT and Summit) for the 10 consecutive full trading days,  ending
              on the

                                       45

<PAGE>



              Determination Date, on which one share of Summit Stock is traded.

       (iii)  "Determination  Date Index Price" means the average of the closing
              prices of the common stock of the companies in the Index Group (as
              defined at (v) below) on the NYSE Composite  Transactions List (as
              reported in The Wall Street Journal or, in the absence thereof, as
              reported by another  authoritative  source mutually agreed upon by
              NMBT and Summit) for the 10  consecutive  full trading days ending
              on the Determination Date.

       (iv)   "Starting  Date Index  Price"  means the  average  of the  closing
              prices on the  Starting  Date (as  defined  at (vi)  below) of the
              common  stock  of the  companies  in the  Index  Group on the NYSE
              Composite  Transactions  List  (as  reported  in The  Wall  Street
              Journal) as of the Determination Date.

       (v)    "Index  Group"  means the bank  holding  companies  listed  below;
              provided,  however,  that if  between  the  Starting  Date and the
              Determination  Date the common stock of any such company ceases to
              be publicly traded, an announcement is made of a proposal for such
              company to be acquired or an announcement is made of a proposal by
              such   company  to  acquire   another   company  or  companies  in
              transactions  with a value exceeding 25% of such acquiror's market
              capitalization  as of the Starting Date,  then, in such event, for
              purposes of calculating the Index Price in all cases, such company
              will be removed from the Index Group.  If any company in the Index
              Group  or  Summit   declares   or   effects   a  stock   dividend,
              reclassification,    recapitalization,    split-up,   combination,
              exchange of shares or similar  transaction  between  the  Starting
              Date and the  Determination  Date, the closing price of the common
              stock of such  company  or  Summit,  as the  case  may be,  on the
              Starting Date shall be appropriately  adjusted for the purposes of
              applying this Section 9.02(e).  The bank holding  companies in the
              Index Group are as follows:

              Bank Holding Companies
              AmSouth Bancorp
              BB&T Corporation
              Comerica Incorporated
              Fifth Third Bancorp
              Huntington Bancshares, Inc.
              Keystone Financial, Inc.
              North Fork Bancorporation, Inc.
              Northern Trust Corporation
              Old Kent Financial Corporation
              Regions Financial Corporation
              SouthTrust Corporation
              Union Planters Corp.
              Wilmington Trust Corporation
              Zions Bancorp

       (vi) "Starting Date" means the date of the last trading day ending before
       the public announcement of the execution of this Agreement.

       Section 9.03.       Effects of a Termination; Certain Expenses.

       (a) Upon a termination  of this  Agreement  pursuant to this Section 9.02
hereof:


                                       46

<PAGE>



              (1) the  obligations of the parties under this  Agreement  (except
for those under this Section 9.03 and  Sections  4.13 and 5.08) shall  terminate
and be of no further  force or effect and each party shall be mutually  released
and  discharged  from  liability  to the  other  party or to any  third  parties
hereunder, and

              (2) no party  shall be liable to any other  party for any costs or
expenses  paid or incurred in  connection  herewith by such other party,  except
that expenses incurred in connection with printing the  Proxy-Prospectus and the
Registration  Statement,  and the  filing  fees  of  regulatory  authorities  or
self-regulatory  organizations,  shall be borne  equally  by  Summit  and  NMBT;
provided,  however,  that: (A) if NMBT  terminates  this  Agreement  pursuant to
Section  9.02(a)(2)  or Section  9.02(c),  Summit shall  reimburse  NMBT for its
out-of-pocket  expenses  reasonably  incurred in connection with this Agreement,
including  counsel fees and the printing and filing fees referred to above,  but
excluding any brokers',  finders' or investment bankers' fees; and (B) if Summit
terminates  this Agreement  pursuant to Section  9.02(a)(2),  Section 9.02(c) or
Section  9.02(d),  NMBT shall reimburse  Summit for its  out-of-pocket  expenses
reasonably  incurred in connection with this Agreement,  including  counsel fees
and the printing and filing fees referred to above,  but excluding any brokers',
finders' or investment bankers' fees.

       (b)  Notwithstanding  any termination of this  Agreement,  (i) NMBT shall
indemnify  and hold Summit  harmless from and against any claim by any broker or
finder  asserting a right to brokerage  commissions or finders' fees as a result
of any action  allegedly taken by or understanding  allegedly  reached with NMBT
and (ii) Summit  shall  indemnify  and hold NMBT  harmless  from and against any
claim by any broker or finder  asserting  a right to  brokerage  commissions  or
finders'  fees as a result of any  action  allegedly  taken by or  understanding
allegedly reached with Summit.

       (c) Except as provided  otherwise herein in the event of a termination of
this Agreement, NMBT and its subsidiaries shall bear their own expenses incident
to preparing,  entering into and carrying out this Agreement and to consummating
the  Reorganization,  provided,  however,  that  Summit  shall pay all  printing
expenses  and  filing  fees  associated  with the  Registration  Statement,  the
Proxy-Prospectus and regulatory applications.


                                    ARTICLE X
                                  MISCELLANEOUS

       Section 10.01. Press Releases. At all times until the Closing Date or the
termination of this Agreement, each party shall promptly advise and consult with
the other prior to issuing,  or permitting any of its  subsidiaries,  directors,
officers,  employees or agents to issue, any press release or other  information
to  the  press  or any  third  party  with  respect  to  this  Agreement  or the
transactions contemplated hereby.

       Section 10.02. Article and Section Headings. Article and section headings
contained in this Agreement are for reference purposes only and shall not affect
in any way the meaning or interpretation of this Agreement.

       Section 10.03.  Entire Agreement;  Amendments.  This Agreement,  the NMBT
Schedules and the Exhibits hereto and the Option Agreement to be entered into by
the  parties  hereto   constitute  the  entire  agreement  between  the  parties
pertaining   to  the  subject   matter   hereof  and  supersede  all  prior  and
contemporaneous  agreements,   understandings,   negotiations  and  discussions,
whether  oral  or  written,  of  the  parties,  and  there  are  no  warranties,
representations or other agreements between the

                                       47

<PAGE>



parties in connection with the subject matter hereof except as specifically  set
forth herein or therein. No supplement,  modification,  waiver or termination of
this Agreement  shall be binding  unless  executed in writing by the party to be
bound  thereby (or in the case of a  termination  occurring  pursuant to Section
9.02 hereof by the party  exercising a right to terminate  this  Agreement).  No
waiver  of any of the  provisions  of this  Agreement  shall be  deemed or shall
constitute  a waiver of any other  provision  hereof or thereof  (whether or not
similar),  nor shall any waiver  constitute a continuing waiver unless otherwise
expressly  provided in the instrument  granting such waiver.  The parties hereto
may amend or modify  this  Agreement  in such  manner as may be agreed upon by a
written  instrument  executed by the  parties,  except  that,  after the meeting
described in Section 7.09 hereof, no such amendment or modification shall reduce
the  amount  of, or change  the forms of  consideration  to be  received  by the
shareholders of NMBT contemplated by this Agreement, unless such modification is
submitted to a vote of the shareholders of NMBT.

       Section 10.04. Survival of Representations,  Warranties and Covenants. No
investigation  made by the parties  hereto made  heretofore  or hereafter  shall
affect the  representations  and  warranties  of the parties which are contained
herein  and  each  such   representation   and  warranty   shall   survive  such
investigation. None of the representations, warranties, covenants and agreements
in this  Agreement or in any  instrument  delivered  pursuant to this  Agreement
shall survive the Effective Time,  except for those  representations,  covenants
and agreements  contained herein and therein which by their terms apply in whole
or in part after the Effective Time.

       Section 10.05.  Notices.  Any notice or other  communication  required or
permitted hereunder shall be in writing, and shall be deemed to have been given,
unless  otherwise  specified in a particular  provision  of this  Agreement,  if
placed in the mail,  registered or certified,  postage prepaid,  or if delivered
personally  or by courier,  receipt  requested,  or by  facsimile  transmission,
receipt acknowledged addressed as follows:

       Summit:                              Summit Bancorp.
                                            Attn: John G. Collins
                                            301 Carnegie Center
                                            P.O. Box 2066
                                            Princeton, NJ   08543-2066
                                            Telephone No.:  609-987-3422
                                            Facsimile No.:  609-987-3435


       With a copy to:                      Richard F. Ober, Jr., Esq.
                                            Summit Bancorp.
                                            301 Carnegie Center
                                            P.O. Box 2066
                                            Princeton, NJ 08543-2066
                                            Telephone No.:  609-987-3430
                                            Facsimile No.:  609-987-3435

       NMBT:                                NMBT CORP
                                            Attention: Michael D. Carrigan
                                            55 Main Street
                                            New Milford, Connecticut 06716
                                            Telephone No.: 860-350-0180
                                            Facsimile No.: 860-355-3489

                                       48

<PAGE>



       With a copy to:                      Stanford N. Goldman, Jr., Esq.
                                            Mintz, Levin, Cohn, Ferris,
                                            Glovsky and Popeo, PC
                                            One Financial Center
                                            Boston, Massachusetts  02111
                                            Telephone No.: 617-348-1708
                                            Facsimile No.: 617-542-2241

or to such other  address as such party may  designate  by notice to the others,
which change of address shall be deemed to have been given upon receipt.

       A notice or other  communication  hereunder shall be deemed delivered (i)
if mailed by certified or registered mail to the proper  address,  with adequate
postage  prepaid,  on the fifth  business day  following  posting,  (ii) if hand
delivered,  when received by the person to whom directed,  (iii) if delivered by
overnight  courier,  on the next  business day  following  shipment,  or (iv) if
delivered via facsimile, on the business day transmitted.

       Section 10.06.  Governing  Law. This  Agreement  shall be governed by and
construed and enforced in  accordance  with the laws of the State of New Jersey,
without giving effect to the provisions, policies or principles thereof relating
to choice or conflict of laws.

       Section   10.07.   Counterparts.   This   Agreement  is  being   executed
simultaneously  in two or more  counterparts,  each of which  shall be deemed an
original, but all of which together shall constitute one and the same agreement.

       Section 10.08.  Binding  Effect.  All of the terms and provisions of this
Agreement  shall be binding  upon and shall  inure to the benefit of the parties
hereto and their respective successors and assigns.

       Section 10.09. Extensions;  Waivers and Consents. Either party hereto, by
written instrument signed by its Chairman,  Vice Chairman,  President,  or Chief
Financial  Officer,  may  extend  the  time  for the  performance  of any of the
obligations  of the other  party  hereto,  and may waive,  at any time before or
after approval of this Agreement and the transactions contemplated hereby by the
shareholders of NMBT, subject to the provisions of Section 10.03 hereof: (i) any
inaccuracies  of the other party in the  representations  and warranties in this
Agreement  or any other  document  delivered  pursuant  hereto or thereto;  (ii)
compliance  with any of the covenants or agreements of the other party contained
in  this  Agreement;   (iii)  the  performance  (including  performance  to  the
satisfaction  of a  party  or its  counsel)  by the  other  party  of any of its
obligations hereunder or thereunder; and (iv) the satisfaction of any conditions
to the obligations of the waiving party hereunder or thereunder.  Any consent or
approval of a party hereunder shall be effective only if signed by the Chairman,
Vice Chairman, President or Chief Financial Officer of such party.




                                       49

<PAGE>


       IN WITNESS WHEREOF, the parties have caused this Agreement to be executed
in  counterparts  by their duly  authorized  officers as of the date first above
written.

                                     SUMMIT BANCORP.


                                     By: /s/ John G. Collins
                                         John G. Collins
                                         Vice Chairman

                                     NMBT CORP


                                     By: /s/ Michael D. Carrigan
                                         Michael D. Carrigan
                                         President and Chief Executive Officer

In the event that  pursuant to the  Reorganization  Election  Summit  elects the
Reorganization method provided for at Section 1.01(a)(2),  the Designated Summit
Subsidiary  indicated  below  agrees  to be  legally  bound by all terms of this
Agreement and Plan of Merger as if an original party hereto.

Designated Summit Subsidiary: ___________________________________

                     By __________________________________
                     Name: _______________________________
                     Title:_________________________________
                     Date: ________________________________


                                       50
<PAGE>

                                                                       EXHIBIT A

          [RESERVED FOR ADDITIONAL TERMS PURSUANT TO SECTION 1.01(b)]

<PAGE>

                                                                       EXHIBIT B

       An executed copy of Exhibit B is filed  herewith as Exhibit 10(b) to this
Schedule 13D.

<PAGE>

                                                                     EXHIBIT C


                           POST-SIGNING DOCUMENT LIST

                                  INSTRUCTIONS


1.     Copies of documents rather than originals should be delivered.

2.     The requested  information and documents  should be provided by NMBT CORP
       ("NMBT") and by all subsidiaries of NMBT unless an item refers by name to
       a specific  entity,  in which case the  information  and documents may be
       furnished  solely by the named entity.  References  to "the  Corporation"
       means NMBT and each of its subsidiaries.

3.     The  information  and  documents  should be provided  separately  by each
       entity.  Please do not mix  information or documents from one entity with
       that of another.  Please clearly segregate materials when delivering them
       to Summit.

4.     Please mark each item of information and each document furnished pursuant
       to this List in the upper right  corner with the letter and number of the
       item in this List to which it corresponds.

5.     Send all information and documentation  requested herein to the attention
       of Dennis A. Williams,  Senior Vice  President and Group Counsel,  Summit
       Bancorp., 301 Carnegie Center, Princeton, New Jersey 08543.

6.     To the  extent  you  believe  an  item of  information  or  document  was
       furnished  pursuant to a NMBT Schedule under the Merger Agreement between
       NMBT and  Summit,  please  indicate  all such  items of  information  and
       documents  on a list,  cross-referencing  the item  from this List to the
       appropriate NMBT Schedule.

       Thank you.




                                        1

<PAGE>
                           POST-SIGNING DOCUMENT LIST

A.   LEGAL

     1.    Original  Certificate  or  Articles of  Incorporation  or Articles of
           Association, as appropriate, certified by Secretary.
     2.    All  Amendments  to  Certificate  or  Articles  of  Incorporation  or
           Articles of Association, as appropriate, certified by Secretary.
     3.    Current By-Laws and any Amendments certified by Secretary.
     4.    Copies of Annual Reports to Shareholders (6 years).
*    5.    Original Minute Books containing all minutes of Shareholder,
           Director and Committee meetings.
*    6.    Original Stock Certificate Records.
     7.    (Reserved)
     8.    List of any outstanding  options,  warrants,  presently  exercisable
           rights,  buyout arrangements,  voting trusts, or liens affecting the
           Corporation's  stock,  with copies of  pertinent  documentation  and
           details of any such arrangements.
     9.    Documentation of all long-term (over one year) indebtedness or credit
           lines of the Corporation  including  guarantees and other  contingent
           liabilities in excess of $50,000.
     10.   List of all officers, directors, and holder of 1% or more of stock of
           the Corporation showing:
                  a)   Full name.
                  b)   Titles.
                  c)  Number  of  Shares  of  Stock  held.
*    11.   List  of  all shareholders with addresses and holdings.
     12.   Address and description of each office and whether building is owned
           or leased.
     13.   As to any land and  buildings  owned,  provide most recent  available
           accounting  or tax schedules  reflecting  any of the  following:  the
           original cost,  date of  acquisition,  age of building,  depreciation
           rates used and allowed by the Internal Revenue Service,  depreciation
           reserve, net book value, and property and other taxes currently being
           paid for each building.  To the extent available,  provide copies of:
           title papers,  title insurance policies,  abstracts,  title opinions,
           appraisals,  surveys and all agreements  relating to or affecting the
           real  property.  List  mortgages,   and,  to  the  extent  available,
           encumbrances and liens of all kinds.
     14.   List of real  estate  acquired  as salvage on  uncollected  loans and
           "other real estate  owned" - address and date  acquired,  loan value,
           most recent appraised value.
     15.   List all  facilities  financed  with  tax-exempt  financing.  Specify
           whether  the  facility  is  owned  or  leased  and,  if  leased,  the
           percentage of space in the facility  under lease.  Please provide all
           documentation  relating to the tax-exempt financing and all documents
           relating to the facility currently in force or in effect.
     16.   Leases for current premises,  whether as tenant or landlord,  and any
           prior premises for which the Corporation retains liabilities. List of
           any directors or officers with whom the Corporation has a lease.


*    Not to be delivered; to be made available for examination on site.



                                        2

<PAGE>




     17.   Leases for all leased equipment with annual rentals over $50,000,
           including, but not limited to:
                  a)   Alarm system
                  b)   Telephone system
                  c)   Computers
                  d)   Office equipment
     18.   All  maintenance  contracts  with  annual  costs  exceeding  $50,000,
           including but not limited to:
                  a)   Equipment
                  b)   Cleaning
     19.   All contracts with advertising  agencies and contracts or commitments
           for media.
     20.   All   agreements,   registrations   or  other  filings   relating  to
           trademarks,  trade  names,  copyrights,  licenses,  patents  or other
           proprietary  rights,   including  books  or  articles  authorized  by
           officers and other employees.
     21.   Agreements  for the  purchase  of  materials  or  supplies  involving
           payments in excess of $50,000 per year or for more than one year.
     22.   Agreements  for the  performance  of services  involving  payments in
           excess of $50,000  per year or for more than one year  related to the
           business, including but not limited to:
                  a)   Messenger Service
                  b)   Mortgage Servicing
                  c)   Data Processing
                  d)   BankCard Servicing
                  e)   Automated Teller Machines Networks
                  f)   Insurance, annuities, mutual fund or securities  sales or
                       brokerage
                  g)   Credit Life & A & H
     23.   All  contracts  or  commitments  for capital  expenditures  involving
           payments in excess of $50,000.
     24.   All contracts or options to purchase or sell  any  real  or  personal
           property.
     25.   All contracts,  agreements,  consultant  arrangements,  retainers, or
           written or oral  commitments  (other  than those  relating  to normal
           customer  transactions)  currently  in  effect  not  listed  above in
           Insurance or Personnel  Lists,  including but not limited to lawyers,
           accountants,   actuaries,   insurance  agents  or  brokers  involving
           payments in excess of $50,000 per year or for more than one year.
     26.   List of all lawsuits,  claims,  proceedings or arbitrations involving
           customers,  federal  or state  government  agencies,  departments  or
           bureaus, insurance carries or others affecting the Corporation or its
           officers  and  employees,   whether  current  or  past  but  not  yet
           conclusively  terminated  or  barred by the  statue  of  limitations,
           whether as plaintiff, defendant or third party, providing:
                  a)   a full statement of the issues involved,
                  b)   nature of the litigation
                  c)   amount involved or maximum total liability or recovery
                       involved,
                  d)   court or other body where matter is to be heard, docket
                       number and date of last filing.
                  e)   last available reply to accountants or opinion of counsel
                       as to the probable outcome of such litigation,
                  f)   availability of insurance coverage, if any.




                                        3

<PAGE>



     NOTE:     The following may be excluded:

                  (i)      Actions by the  Corporation  to collect loans made in
                           the ordinary  course of business  where the principal
                           amount  is  less  than   $50,000  and  there  are  no
                           counterclaims.
                  (ii)     Actions against the Corporation
                           (A) for  personal  injuries  where  there is adequate
                           insurance   coverage  and  the  claim  is  less  than
                           $50,000.  Provide  a list  reflecting  the  aggregate
                           exposure for deductibles under insurance policies for
                           claims of  $50,000  or less.  (B) for  losses  due to
                           alleged check processing  errors (forged  signatures,
                           stop payment missed,  etc.) where the alleged loss is
                           less than $2,500 per claimant.

     27.   All filings with Comptroller of the Currency,  Federal Reserve Board,
           Federal Financial  Institutions  Examination Counsel, FDIC, Office of
           Thrift Supervision,  and all other regulatory agencies (including but
           not limited to Forms FFIEC-003 and FFIEC-004, F-2, F-3, F-4 and F-20,
           FDIC   insurance   premium   reports,   and  Call  Reports  with  all
           supplements,  for all interim and  full-year  periods  from 1/l/96 to
           date).
     28.   All written policies and procedures  governing  operation of business
           including loan policies.
     29.   All pricing schedules made available to customers for service
           charges,  etc. and product  brochures in effect currently and
           for last two years.
     30.   All advertising materials used in the last two years.
     31.   All standard purchasing forms.
     32.   All agreements with competitors.
     33.   List of all  relationships  between  (i) NMBT and (ii) Summit and its
           officers, directors and affiliates, including without limitation:
                  a)   Loans; and
                  b)   Purchases or sales of products or services (except from
                       public utility companies).
     34.   Director and officer Questionnaires for directors and executive
           officers for last 2 years.
     35.   Any covenants not to compete affecting officers or employees of NMBT
     36.   CRA public file.
     37.   CRA Small Business Data (3 years)
     38.   BSA Compliance Program
     39.   Most recent Consumer Affairs Examination Report
     40.   Insider loan compliance procedures.
     41.   List of insiders (Regulation O).
     42.   List of related interests (as defined in Regulation O).
     43.   Correspondent bank list (as defined in Regulation O).
     44.   Reports of executive officer indebtedness in excess of $100,000.
     45.   Records relating to insider overdrafts.
     46.   Copy of Home Mortgage Disclosure Statements (Regulation C) for 3
           years.
     47.   All filings by the Corporation with the SEC for the period specified
           below, including but not limited to:
                  Registration Statements - 6 years
                  Proxy Statements - 6 years
                  Statements under Section 16(a) of the Securities  Exchange Act
                  of 1934 - 1 year Reports on Forms 10-K, 10-Q and 8-K - 3 years



                                        4

<PAGE>



                  SEC Forms 13G, 13D and MSD - 3 years Other - 3 years
           including all Exhibits and Amendments to the foregoing.
     48.   List of any  unregistered  sales  of  securities  (including  private
           placements)  in the  last  6  years  and  applicable  exemptions  and
           opinions of counsel.
     49.   All applications to and filings with the NASD in the last 3 years,
           other than those supplied in response to item A.47.




                                        5

<PAGE>



B.   PERSONNEL

     1.    Corporation's Table of organization.
*    2.    List of all officers and directors of the Corporation, showing:
                  a)   Full name.
                  b)   Titles.
                  c)   Date of birth.
                  d)   Current salary, bonus and other compensation, and method
                       of calculation and payment.
                  e)   Salary, bonus and other compensation for 1997, 1998 and
                       1999 to  date.
                  f)   Date of  first  employment  and any gaps in
                  service.
     3.    All employment contracts.
     4.    All pension and retirement plans and IRS rulings and opinions of
           counsel thereon.
     5.    All bonus plans.
     6.    All deferred compensation plans.
     7.    All profit-sharing plans and IRS rulings and opinions of counsel
           thereon.
     8.    All stock option plans.
     9.    All dividend  reinvestment plans and stock purchase plans.
     10.   All annuity plans.
     11.   All stock award plans.
     12.   All  actuarial and trustees  reports for pension,  profit-sharing
           and other  benefit  plans for 3 years.
     13.   Summaries of separate  payment arrangements for terminated or
           retired employees.
     14.   Summaries of strategies regarding healthcare:
           - cost management
           - employee contributions
     15.   Statements   of   Investment   Policy  and  summaries  of  investment
           strategies for Pension, 401(k), and Profit Sharing Plans, etc.
     16.   Loan Agreements and special trust agreements for leveraged benefits
           (e.g. ESOP, etc.)
     17.   Consulting or servicing  agreements,  for consulting services and
           outsourced  services.
     18.   List of all employee  benefits in force,  with copies of all relevant
           documentation,  including plan documents,  trust agreements,  funding
           arrangements,  summary plan descriptions  benefits or policy manuals,
           insurance  policies,  etc.,  and a  schedule  or agents  or  brokers,
           expiration date,  premiums paid and claims made during the last three
           years, including but not limited to:
                  a)    Pension, bonus, profit-sharing, stock option, stock
                        purchase and annuity plans.
                  b)    Medical plans i.e., Blue Cross-Blue Shield, Major
                        Medical, Health Maintenance organizations, commercial
                        health insurance policies.
                  c)    Dental plans.
                  d)    Vacation policy.
                  e)    Education reimbursement policy.
                  f)    Short-term disability.
                  g)    Long-term disability.
                  h)    Sick day policy.
                  i)    Emergency leave policy.
                  j)    Grievance policy.
                  k)    Employee discount policy.



                                        6

<PAGE>



                  1)    Life insurance.
                  m)    Business travel accident insurance.
                  n)    Personal accidental death and disability insurance.
                  o)    Salary continuation program.
                  p)    Retirement policy.
                  q)    AD&D
                  r)    Dependent Life
                  s)    Spending Accounts
                  t)    Employee Assistance Policy
                  u)    Adoption Policy
                  v)    Work/life initiatives
                  w)    Employee referral policy
*    14.   List of unemployment compensation claims and results for 3 prior
           years and current year.
     15.   All hiring procedures and policies, including methods of solicitation
           of applicants, media or agencies used, nepotism policy, etc.
     16.   Information   regarding  who  prepares   payroll  and  all  contracts
           regarding payroll preparation.
     17.   Informal pension,  consulting,  or benefits continuance  arrangements
           with retired employees.


*    Not to be delivered; to be made available for examination on site.




                                        7

<PAGE>



C.   INSURANCE

     1.    Copies of all  Liability  Insurance  Contracts and  applications  and
           insurance company audits for current and three prior years, including
           but not limited to:
                  a)    Comprehensive General Liability.
                  b)   Auto Liability.
                  c)   Umbrella Liability.
                  d)   Worker's Compensation.
     2.    List of paid and open Liability claims for current and 6 prior
           years,  indicating:
                  a)  Type of  claim  and  whether  open or closed.
                  b)  Amount of loss or claim (paid and incurred).
                  c)  Date of occurrence.
                  d)  Description of occurrence.

     3.    List of self-insured or non-insured risk program.
     4.    Any written safety programs.

*    5.    Copies of latest  loss  prevention  inspections  and  reports  on all
           liability, fire/loss prevention, worker's compensation exposures.

     6.    Copies of OSHA  Summary  Accident  Reports  for  current  and 3 prior
           years, along with citations, fines assessed and cost of compliance.

     7.    Complete copies of all property insurance policies for current
           and 3  prior  years  including:

                  a)    Bank  Real  and  Personal  Property,  Fire  &  Extended
                        Coverage,   All-Risk   Coverage   including   Flood   &
                        Earthquake.
                  b)    Boiler and Machinery.
                  c)    Mortgage Properties/Forced Placed/Foreclosed/Other
                        Real Estate Owned.
                  d)    Trust Properties.
                  e)    Aircraft and/or Watercraft Coverages
     8.    List of all paid and open Property losses for current and 6 prior
           years, indicating:
                  a)   Type of claims and whether open or closed.
                  b)   Amount of loss or claim (paid and incurred)
                  c)   Date of loss.
                  d)   Description of loss.
                  e)   Address where loss occurred, Bank location/mortgage
                       property/OREO/Trust
     9.    Copies of latest fire/loss prevention inspection reports.
     10.   Complete  copies of all other insurance  coverages with  applications
           and loss history for current and 3 years prior
                  a)    Fidelity Bond and Computer Crime Coverages (6 year
                        history).
                  b)    Directors & Officers Liability.
                  c)    Professional Liability, i.e. Bankers Professional, Trust
                        Errors & Omissions, EDP Errors & Omissions, Insurance
                        Agents Errors & Omissions, etc.
                  d)    Mail Insurance.
                  e)    Loss Instrument Bonds.
                  f)    Miscellaneous  Bonds,  i.e.  Performance,   Maintenance,
                        Securities Transfer Agents (STAMP).
                  g)    Mortgage Impairment/Errors & Omissions Coverage




                                        8

<PAGE>



                  h)    Kidnap/Ransom
                  i)    ERISA/Pension  Trust/Fiduciary  Coverage

     10.   Description of Risk  Management  Information  System

     11.   List of  Insurance  Agent & Broker  contracts.

     12.   Summaries of  litigation  involving  general liability coverage.


*    Not to be delivered; to be made available for examination on site.



                                        9

<PAGE>



D.   ACCOUNTING AND TAX

     1.    Access to 1997, 1998 and 1999 general ledger.
     2.    Federal tax returns of Corporation for 4 years.
     3.    State sales, use, income and personal property tax returns for
           4 years.
     4.    Certified balance sheets and income statements of NMBT for 4 prior
           years, and most recent period available, including accountant's
           reports.
*    5.    All audit reports of IRS in last 4 years.
     6.    All audit reports of state taxing authorities in last 4 years.
     7.    List setting  forth status of all open tax returns,  noting status of
           each  years  return,   i.e.,  whether  liability  settled,   not  yet
           determined or in controversy. Status of all claims for refund.
     8.    List of all bank accounts in other banks with:
             a)   copy of most recent statement and reconciliation to general
                  ledger.
             b)   copy of bank account resolution.
             c)   copy of current signature cards.
     9.    List of all loans to Corporation officers, directors,  employees, and
           members of their  families  currently  outstanding or made during the
           past three  years,  including  cash  advances or payments or personal
           expenses not reimbursed within 30 days in excess of $1,000, including
           the following information:
                  a)   Loan date.
                  b)   Amount.
                  c)   Term.
                  d)   Interest rate.
                  e)   Highest outstanding balance.
                  f)   Current balance.
                  g)   Has the loan been in default and is it currently in
                       default?  If yes, details.
*    10.   Verification of current payment of all estimated tax for NMBT,
           withholding and FICA for employees.
     11.   List all commissions or other payments made to obtain business.
     12.   List of all  contingent  liabilities  and assets,  whether  recorded
           or unrecorded in excess of $50,000.
     13.   Schedule  showing date and amount of
           each dividend paid since 1/l/96.
     14.   List of loan commitments greater than $50,000.
     15.   List of bank  obligations  other than deposits and deposit
           liabilities greater than $50,000.
     16.   List of  transactions  over past 2 years greater than $25,000 with
           officers, directors and employees.
     17.   List of bankruptcy accounts.


*    Not to be delivered; to be made available for examination on site.




                                       10

<PAGE>

E.   AUDIT

     1.    Management letters issued by independent CPA for prior year.
     2.    Internal Audit Reports for 1 year


F.   CREDIT RISK MANAGEMENT     (To the extent it is not practicable to deliver
                                 may be made available on site)

     1.    Most recent Federal and State safety and soundness exam
     2.    All latest Board approved Loan Policies and Risk Management Policies
           including Appraisal, Real Estate, OREO, and all Lines of Business.
     3.    Lending Philosophy - copy of the companies culture statement
     4.    Concentrations - standards and specialties  such as Healthcare,  etc.
           supported by latest quarterly reporting
     5.    Last Quarterly Portfolio  Stratification  and Trend  Analysis

     6.    Loan Grading Methodology and Stratification

     7.    Financial Statement  requirements for  underwriting
     8.    Credit  Investigation  and Analysis  process
     9.    Credit Underwriting process and standards
             -  Credit files - composition and structure
     10.   Documentation process and standards
                  a) Fee philosophy
                  b) House documents and dollar threshold
                  c) Insurance standards
     11.   Participation/Syndication - copy of latest quarterly report
                  a)   Shared National Credits
                  b)   HLT Reports
     12.   Problem  Asset  Management   Standards
                  a)  Identification
                  b)  Notification
                  c)  Assignment
                  d)  Management (LMS  System) Watchlist
                  e)  Approval
                  f)  Reporting requirements
                  g)  Delinquency - copy of latest quarterly report
                  h)  Non-Performing Assets - copy of latest quarterly report
                        -  NPL's by size
                        -  NPL's by type
                  i)  Accrued interest on NPL
                  j)  Budget for NPA's
                  k)  List of TDR's
                  l)  Charge offs/Recoveries - copy of latest quarterly report
                  m)  ALLR - methodology and copy of latest report




                                       11

<PAGE>


           n)     Listing  of Loans 90 days past due - copy of latest  quarterly
                  report broken down by product/line of business.

     13.   Off Balance  Sheet  Activities  - copy of latest  quarterly  report

     14.   International  Activities  - Sovereign  Risk

     15.   Domestic and Foreign Bank (Reg F) - copy of latest Board  reporting

     16.   Residential Mortgage - loan standards,  commitments and outstandings

     17.   Installment - loan standards, commitments and outstandings
             -  Dealerships - commitments and outstandings,
                copy of latest quarterly report
     18.   Corporate Finance standards, commitments and outstandings
     19.   FDICIA 304 - copy of latest Board reporting
     20.   Reg O - copy of latest Board reporting
     21.   Approval Process and Authorities for Lending Authority
     22.   Environmental Standards
     23.   Appraisal
           a)   Copy of approved appraisal listing
           b)   Process for Commercial and Residential Appraisals
                  -  Pending litigation involving valuation issues
     24.   Real Estate Standards
     25.   Personal Property - copy of standards
     26.   Hold Limits - copy of standards
     27.   Outside Counsel methodology and process
     28.   Privity Standards
     29.   SIC Reports and Methodology - copy of latest quarterly reporting
     30.   Counterparty Risk - latest assessment of risk profile
     31.   Leasing - standards,  outstandings  and  commitments and copy of
           latest quarterly  report
     32.   Large  Corporation   standards,   outstandings  and  commitments
           latest quarterly report
     33.   Correspondent  Banking standards, outstandings and commitments
           and copy of latest quarterly report
     34.   Asset Based Lending standards, outstandings and commitments and
           copy of latest quarterly report
     35.   Exception to Policy - process and copy of latest report and
           methodology
     36.   OREO Accounting process and copy of latest quarterly report






                                       12

<PAGE>
                                                                     EXHIBIT D-1



                               Name of Affiliate:______________________

Summit Bancorp.
301 Carnegie Center
P.O. Box 2066
Princeton, New Jersey 08543

Gentlemen:

         This letter  agreement is being  entered into  pursuant to the terms of
the  Agreement  and  Plan  of  Merger,  dated  October  __,  1999  (the  "Merger
Agreement"),  between Summit Bancorp.  ("Summit") and NMBT Corp ("NMBT"),  which
provides,  among other things,  for the merger of NMBT with and into Summit (the
"Merger") and the  conversion at the Exchange  Ratio  provided for in the Merger
Agreement  of shares of the common  stock,  par value  $.01 per  share,  of NMBT
("NMBT  Common  Stock")  outstanding  at the  Effective  Time (as defined in the
Merger  Agreement)  held in the  aggregate by each NMBT  Shareholder  into whole
shares of the Common  Stock,  par value $.80 per share,  of Summit (the  "Summit
Common Stock") and cash in lieu of a fractional share of Summit Common Stock.

         Shares of NMBT  Common  Stock  owned on the date  hereof or at any time
hereafter solely, jointly or in a custodial or other representative  capacity by
me, by a minor child of mine, by a relative sharing the same household as me, or
by  an  entity  (for  example,  trusts,  estates,  partnerships,   corporations,
charitable organizations,  foundations) I control, whether such shares are owned
directly (of record) or indirectly  (through a bank,  broker or other  nominee),
and any other shares of NMBT Common Stock over which I or such other  persons or
entities hold  investment  or voting  powers,  either alone or with others,  are
referred to  collectively  herein as the "NMBT Shares".  Shares of Summit Common
Stock to be  received in exchange  for the NMBT Shares  together  with any other
shares of Summit Common Stock owned  solely,  jointly or in a custodial or other
representative  capacity after the time of the Merger by me, by a minor child of
mine, by a relative  sharing the same household as me, or by an entity I control
whether such shares are owned  directly or  indirectly,  and any other shares of
Summit Common Stock over which I or such persons or entities hold  investment or
voting powers,  either alone or with others, are referred to collectively herein
as the "Summit Shares".

         I have been advised that, in the opinion of counsel, I may be deemed to
be, at the time the Merger is submitted for a vote of the  shareholders  of NMBT
an  "affiliate"  of NMBT as that term is defined for purposes of paragraphs  (c)
and (d) of Rule 145 of the Rules and Regulations  (the "Rules and  Regulations")
of the Securities and Exchange  Commission  (the "SEC") under the Securities Act
of 1933,  as amended  (the "Act") and that the Merger  Agreement  requires  that
persons so characterized  make the  representations,  warranties,  covenants and
agreements set forth below as a condition to Summit closing the Merger.




<PAGE>



         Capitalized terms used herein but not specifically defined herein shall
have the meaning ascribed to them in the Merger Agreement.

         In consideration of the premises,  I represent,  warrant,  covenant and
agree as follows:

         A. I will not make or permit any sale, transfer or other disposition of
the Summit  Shares,  or make or permit any offer to sell,  transfer or otherwise
dispose  of the  Summit  Shares,  in  violation  of the  Act  or the  Rules  and
Regulations.

         B. I have been advised that the issuance of the Summit Shares  pursuant
to the  Merger  has been  registered  with the SEC  pursuant  to a  registration
statement  under the Act.  However,  I have also been  advised  that a secondary
distribution  of the  Summit  Shares has not been  registered  under the Act and
that,  because I may be deemed to be, at the time the Merger is submitted  for a
vote of the  shareholders  of NMBT,  an  "affiliate"  of NMBT, I may not make or
permit any sale,  transfer or other  disposition  of any of such  Summit  Shares
unless and until (i) an offer and sale of such Summit Shares has been registered
under the Act, (ii) such disposition of such Summit Shares is made in conformity
with Rule 145 under the Act, or (iii) an  exemption  from  registration,  in the
written  opinion of counsel  acceptable to Summit,  is available with respect to
such  disposition  of such Summit  Shares.  In the event of a transfer of Summit
Shares permitted by this Agreement,  I agree that I will obtain,  and deliver to
you a copy of, an agreement  substantially  similar to this  agreement from each
transferee  of  the  Summit  Shares  who,  in the  written  opinion  of  counsel
acceptable  to Summit,  may not under the Act  dispose  of the Summit  Shares so
transferred without registration under the Act.

         C. I  understand  that Summit is under no  obligation  to register  the
sale,  transfer or other  disposition  of the Summit Shares or to take any other
action necessary in order to make compliance with an exemption from registration
available.

         D. I  understand  that  stop  transfer  instructions  may be  given  to
Summit's  transfer agent with respect to the Summit Shares and that there may be
placed  on the  certificates  for  such  Summit  Shares,  or  any  substitutions
therefor, a legend stating in substance:

        The shares  represented by this certificate were issued in a transaction
        to which Rule 145 promulgated  under the Securities Act of 1933 applies.
        The shares represented by this certificate may not be sold, transferred,
        or   otherwise   disposed  of  unless   pursuant  to  (i)  an  effective
        registration  statement  under the Securities Act of 1933, (ii) Rule 145
        or (iii) an  exemption  from  registration  under  the said Act which is
        available in the opinion of counsel acceptable to Summit Bancorp.

           The legend set forth above and any similar legend placed on any share
certificate issued upon the transfer of any of the Summit Shares will be removed
by delivery of substitute  certificates  without such legend if the undersigned,
or any person who acquired,  directly or indirectly,  such Summit Shares,  shall
have  delivered  to Summit a copy of a letter  from the  staff of the SEC,  or a
written  opinion  of  counsel  acceptable  to  Summit,  to the  effect  that the
restrictions on sale, transfer


                                        2

<PAGE>



or other  disposition  referred to in this letter are no longer  necessary under
the Act or otherwise in order to effect such sale, transfer or other disposition
pursuant to law.

           E. I will  vote all of the NMBT  Shares I now own of  record  or have
voting control with respect to or hereafter  acquire,  in favor of the Merger at
the meeting of  shareholders  of NMBT to be called for the purpose of  approving
the Merger (the "Meeting").  In addition,  I will not vote any of my NMBT Shares
in favor of any other merger or sale of all or  substantially  all the assets of
NMBT to any person other than Summit or its affiliates  until the termination of
the Merger  Agreement or  abandonment  of the Merger by the mutual  agreement of
NMBT and Summit, whichever comes NMBT, nor will I transfer my NMBT Shares unless
the transferee, prior to such transfer, executes a voting agreement with respect
to the  transferred  shares  substantially  to the effect of this  agreement and
satisfactory to Summit.

           F. By reason of my knowledge and experience in financial and business
matters and in my capacity as a director and/or executive officer of a financial
institution,  I believe myself capable of evaluating the merits and risks of the
potential   investment  in  Summit  Common  Stock  contemplated  by  the  Merger
Agreement.  I further  acknowledge  having reviewed the Merger Agreement and its
attachments  and that  reports,  proxy  statements  and other  information  with
respect  to Summit  filed  with the  Securities  and  Exchange  Commission  (the
"Commission")  were,  prior to my execution  of this  agreement,  available  for
inspection  and  copying  at the  Offices  of the  Commission  and  that  Summit
delivered the following such documents to NMBT:

           (a) Summit's  Annual Report on Form 10-K for the year ended  December
           31, 1998; and
           (b) Summit's  Quarterly  Reports on Form 10-Q for the quarters  ended
           March 31, 1999 (as amended) and June 30, 1999.
           (c) Summit Current  Reports on Form 8-K dated April 27, 1999 and June
           16, 1999.

           G. Summit agrees, by accepting this letter,  (a) that for a period of
two years after the Effective  Time (or such shorter  period as may be permitted
by amendments to Rule 145) and thereafter until three months after I have ceased
to be an  affiliate  of  Summit  and so long as  Summit  has  equity  securities
registered  pursuant to Section 12 of the  Securities  Exchange Act of 1934,  as
amended,  Summit will make  available with respect to itself  "adequate  current
public  information"  as defined in  paragraph  (c) of Rule 144 of the Rules and
Regulations under the Act.













                                        3

<PAGE>


           I  have  carefully  read  this  letter  and,  to  the  extent  I felt
necessary,  discussed  with my counsel the  requirements  of this letter and its
impact upon the ability to dispose of the NMBT Shares and the Summit Shares.


                                          Very truly yours,

Accepted this _______ day of __________________, 199__
by Summit Bancorp.

                                                     __________________________
By:____________________________                      Signature
Name:____________________________                    __________________________
Title:____________________________                   Printed Name
                                                     Dated as of ______, 199__










                                        4

<PAGE>
                                                                  EXHIBIT D-2




                               Name of Affiliate:________________________


Summit Bancorp.
301 Carnegie Center
P.O. Box 2066
Princeton, New Jersey 08543

Gentlemen:

         This letter  agreement is being  entered into  pursuant to the terms of
the  Agreement  and  Plan  of  Merger,  dated  October  __,  1999  (the  "Merger
Agreement"),  between Summit Bancorp.  ("Summit") and NMBT Corp ("NMBT"),  which
provides,  among other things,  for the merger of NMBT with and into Summit (the
"Merger") and the  conversion at the Exchange  Ratio  provided for in the Merger
Agreement  of shares of the common  stock,  par value  $.01 per  share,  of NMBT
("NMBT  Common  Stock")  outstanding  at the  Effective  Time (as defined in the
Merger  Agreement)  held in the  aggregate by each NMBT  Shareholder  into whole
shares of the Common  Stock,  par value $.80 per share,  of Summit (the  "Summit
Common Stock") and cash in lieu of a fractional share of Summit Common Stock.

         Shares of NMBT  Common  Stock  owned on the date  hereof or at any time
hereafter solely, jointly or in a custodial or other representative  capacity by
me, by a minor child of mine, by a relative sharing the same household as me, or
by  an  entity  (for  example,  trusts,  estates,  partnerships,   corporations,
charitable organizations,  foundations) I control, whether such shares are owned
directly (of record) or indirectly  (through a bank,  broker or other  nominee),
and any other shares of NMBT Common Stock over which I or such other  persons or
entities hold  investment  or voting  powers,  either alone or with others,  are
referred to  collectively  herein as the "NMBT Shares".  Shares of Summit Common
Stock to be  received in exchange  for the NMBT Shares  together  with any other
shares of Summit Common Stock owned  solely,  jointly or in a custodial or other
representative  capacity after the time of the Merger by me, by a minor child of
mine, by a relative  sharing the same household as me, or by an entity I control
whether such shares are owned  directly or  indirectly,  and any other shares of
Summit Common Stock over which I or such persons or entities hold  investment or
voting powers,  either alone or with others, are referred to collectively herein
as the "Summit Shares".

         I have been advised that, in the opinion of counsel, I may be deemed to
be, at the time the Merger is submitted for a vote of the  shareholders of NMBT,
an  "affiliate"  of NMBT as that term is defined for purposes of paragraphs  (c)
and (d) of Rule 145 of the Rules and Regulations  (the "Rules and  Regulations")
of the Securities and Exchange  Commission  (the "SEC") under the Securities Act
of 1933,  as amended  (the "Act") and that the Merger  Agreement  requires  that
persons so characterized  make the  representations,  warranties,  covenants and
agreements set forth



<PAGE>



below as a condition to Summit closing the Merger.

         Capitalized terms used herein but not specifically defined herein shall
have the meaning ascribed to them in the Merger Agreement.

         In consideration of the premises,  I represent,  warrant,  covenant and
agree as follows:

         A. I will not make or permit any sale, transfer or other disposition of
the Summit  Shares,  or make or permit any offer to sell,  transfer or otherwise
dispose  of the  Summit  Shares,  in  violation  of the  Act  or the  Rules  and
Regulations.

         B. I have been advised that the issuance of the Summit Shares  pursuant
to the  Merger  has been  registered  with the SEC  pursuant  to a  registration
statement  under the Act.  However,  I have also been  advised  that a secondary
distribution  of the  Summit  Shares has not been  registered  under the Act and
that,  because I may be deemed to be, at the time the Merger is submitted  for a
vote of the  shareholders  of NMBT,  an  "affiliate"  of NMBT, I may not make or
permit any sale,  transfer or other  disposition  of any of such  Summit  Shares
unless and until (i) an offer and sale of such Summit Shares has been registered
under the Act, (ii) such disposition of such Summit Shares is made in conformity
with Rule 145 under the Act, or (iii) an  exemption  from  registration,  in the
written  opinion of counsel  acceptable to Summit,  is available with respect to
such  disposition  of such Summit  Shares.  In the event of a transfer of Summit
Shares permitted by this Agreement,  I agree that I will obtain,  and deliver to
you a copy of, an agreement  substantially  similar to this  agreement from each
transferee  of  the  Summit  Shares  who,  in the  written  opinion  of  counsel
acceptable  to Summit,  may not under the Act  dispose  of the Summit  Shares so
transferred without registration under the Act.

         C. I  understand  that Summit is under no  obligation  to register  the
sale,  transfer or other  disposition  of the Summit Shares or to take any other
action necessary in order to make compliance with an exemption from registration
available.

         D. I  understand  that  stop  transfer  instructions  may be  given  to
Summit's  transfer agent with respect to the Summit Shares and that there may be
placed  on the  certificates  for  such  Summit  Shares,  or  any  substitutions
therefor, a legend stating in substance:

        The shares  represented by this certificate were issued in a transaction
        to which Rule 145 promulgated  under the Securities Act of 1933 applies.
        The shares represented by this certificate may not be sold, transferred,
        or   otherwise   disposed  of  unless   pursuant  to  (i)  an  effective
        registration  statement  under the Securities Act of 1933, (ii) Rule 145
        or (iii) an  exemption  from  registration  under  the said Act which is
        available in the opinion of counsel acceptable to Summit Bancorp.

           The legend set forth above and any similar legend placed on any share
certificate issued upon the transfer of any of the Summit Shares will be removed
by delivery of substitute  certificates  without such legend if the undersigned,
or any person who acquired, directly or indirectly, such


                                        2

<PAGE>


Summit Shares,  shall have delivered to Summit a copy of a letter from the staff
of the SEC, or a written opinion of counsel  acceptable to Summit, to the effect
that the restrictions on sale, transfer or other disposition referred to in this
letter are no longer  necessary  under the Act or  otherwise  in order to effect
such sale, transfer or other disposition pursuant to law.

           E. Summit agrees, by accepting this letter,  (a) that for a period of
two years after the Effective  Time (or such shorter  period as may be permitted
by amendments to Rule 145) and thereafter until three months after I have ceased
to be an  affiliate  of  Summit  and so long as  Summit  has  equity  securities
registered  pursuant to Section 12 of the  Securities  Exchange Act of 1934,  as
amended,  Summit will make  available with respect to itself  "adequate  current
public  information"  as defined in  paragraph  (c) of Rule 144 of the Rules and
Regulations under the Act.


           I  have  carefully  read  this  letter  and,  to  the  extent  I felt
necessary,  discussed  with my counsel the  requirements  of this letter and its
impact upon the ability to dispose of the NMBT Shares and the Summit Shares.


Accepted this __ day of _____, 199__             Very truly yours,
by Summit Bancorp.


By:                                              Signature
Name:

Title:                                           Printed Name
                                                 Dated as of ________, 199__















                                        3
<PAGE>
                                                                       Exhibit E









Board of Directors                               Board of Directors
ABCD Corp                                        Summit Bancorp.
                                                 301 Carnegie Center
                                                 Princeton, New Jersey


Ladies and Gentlemen:

                  You have requested our opinion with regard to certain federal
income tax consequences of the proposed merger (the "Merger") of ABCD Corp
("ABCD") with and into First Valley Corporation ("First Valley"), a wholly owned
subsidiary of Summit Bancorp. ("Summit").

                  In connection with the preparation of our opinion, we have
examined and have relied upon the following:

                  (i) The Agreement and Plan of Merger by and among Summit,
                  First Valley, and ABCD dated October __, 1999, including the
                  schedules and exhibits thereto (the "Agreement"), and the
                  "Reorganization Election" (as the quoted term is defined in
                  the Agreement);

                  (ii) Summit's Registration Statement on Form S-4, including
                  the Proxy Statement/Prospectus contained therein, filed with
                  the Securities and Exchange Commission on October __, 1999, as
                  supplemented and amended to the date hereof (the "Registration
                  Statement");

                  (iii) The representations and undertaking of Summit
                  substantially in the form of Exhibit A hereto;

                  (iv) The representations and undertakings of ABCD
                  substantially in the form of Exhibit B hereto; and

                  (v) The Shareholder Rights Plan between Summit (formerly UJB
                  Financial Corp.) and First Chicago Trust Company of New York,
                  as rights agent, dated as of August 16, 1989, and the Rights
                  Agreement between Summit and First Chicago Trust Company of
                  New York, as rights agent, dated as of June 16, 1999
                  (collectively, the "Rights Agreements").

                  Our opinion is based solely upon applicable law and the
factual information and undertakings contained in the above-mentioned documents.
In rendering our opinion, we have assumed the accuracy of all information and
the performance of all undertakings contained in each of such documents, and we
have assumed that all representations made to the knowledge of any person or
entity or with similar qualification will be true and correct as if made without
such qualification. We also have assumed the authenticity of all original
documents, the conformity of all copies to the original documents, and the
genuineness of all signatures. We have not attempted to verify independently the
accuracy of any information


<PAGE>

Page 2



in any such document, and we have assumed that such documents accurately and
completely set forth all material facts relevant to this opinion. All of our
assumptions were made with your consent. If any fact or assumption described
herein or below is incorrect, any or all of the federal income tax consequences
described herein may be inapplicable.

                                     OPINION

                  Subject to the foregoing, to the conditions and limitations
expressed elsewhere herein, and assuming that the Merger is consummated in
accordance with the Agreement, we are of the opinion that for federal income tax
purposes:

                  1. The Merger will constitute a reorganization within the
meaning of sections 368(a)(1)(A) and 368(a)(2)(D) of the Internal Revenue Code
of 1986, as amended to the date hereof (the "Code"). Each of Summit, First
Valley and ABCD will be a "party to a reorganization" within the meaning of
Section 368(b) of the Code.

                  2. Each shareholder of ABCD who exchanges, in the Merger,
shares of ABCD common stock, par value $1.00 per share ("ABCD Common Stock")
solely for shares of Summit common stock, par value $0.80 per share, including
the rights associated therewith under the Rights Agreements ("Summit Common
Stock"):

                           a) will recognize no gain or loss as a result of the
                  exchange, except with regard to cash received in lieu of a
                  fractional share, as discussed below (Code section 354(a)(1));

                           b) will have an aggregate basis for the shares of
                  Summit Common Stock received (including any fractional share
                  of Summit Common Stock deemed to be received, as described in
                  paragraph 3, below) equal to the aggregate adjusted tax basis
                  of the shares of ABCD Common Stock surrendered (Code section
                  358(a)(1)); and

                           c) will have a holding period for the shares of
                  Summit Common Stock received (including any fractional share
                  of Summit Common Stock deemed to be received, as described in
                  paragraph 3, below) which includes the holding period of the
                  shares of ABCD Common Stock surrendered, provided that the
                  shares of ABCD Common Stock surrendered are held as capital
                  assets at the time of the Merger (Code section 1223(1)).

                  3. Each shareholder of ABCD who receives, in the Merger, cash
in lieu of a fractional share of Summit Common Stock will be treated as if the
fractional share had been received in the Merger and then redeemed by Summit.
Provided that the shares of ABCD Common Stock surrendered are held as capital
assets at the time of the Merger, the receipt of such cash will cause the
recipient to recognize capital gain or loss, equal to the difference between the
amount of cash received and the portion of such holder's basis in the shares of
Summit Common Stock allocable to the fractional share (Code sections 1001 and
1222; Rev. Rul. 66-365, 1966-2 C.B. 116; Rev. Proc. 77-41, 1977-2 C.B. 574).



<PAGE>

Page 3


                             * * * * * * * * * * * *

                  We express no opinion with regard to: (1) the federal income
tax consequences of the Merger not addressed expressly by this opinion,
including without limitation, (i) the tax consequences, if any, to those
shareholders of ABCD who acquired shares of ABCD Common Stock pursuant to the
exercise of employee stock options or otherwise as compensation, and (ii) the
tax consequences to special classes of shareholders, if any, including without
limitation, foreign persons, insurance companies, tax-exempt entities,
retirement plans, and dealers in securities; and (2) federal, state, local, or
foreign taxes (or any other federal, state, local, or foreign laws) not
specifically referred to and discussed herein. Further, our opinion is based
upon the Code, Treasury Regulations proposed or promulgated thereunder, and
administrative interpretations and judicial precedents relating thereto, all of
which are subject to change at any time, possibly with retroactive effect, and
we assume no obligation to advise you of any subsequent change thereto. If there
is any change in the applicable law or regulations, or if there is any new
administrative or judicial interpretation of the applicable law or regulations,
any or all of the federal income tax consequences described herein may become
inapplicable.

                  The foregoing opinion reflects our legal judgment solely on
the issues presented and discussed herein. This opinion has no official status
or binding effect of any kind. Accordingly, we cannot assure you that the
Internal Revenue Service or any court of competent jurisdiction will agree with
this opinion.

                  We hereby consent to the filing of this letter as an exhibit
to the Registration Statement and to all references made to this letter and to
this firm in the Registration Statement.

                                        Very truly yours,





                        NMBT CORP STOCK OPTION AGREEMENT

THE  TRANSFER  OF THE  OPTION  GRANTED  BY THIS  AGREEMENT  IS SUBJECT TO RESALE
RESTRICTIONS ARISING UNDER THE SECURITIES ACT OF 1933, AS AMENDED.

         STOCK OPTION AGREEMENT,  dated as of the 4th day of October, 1999 (this
"Agreement"), between Summit Bancorp., a New Jersey corporation ("Grantee"), and
NMBT CORP, a Delaware corporation ("Issuer").

                                   WITNESSETH:

         WHEREAS,  Grantee and Issuer  have on a date prior to the date  hereof,
entered  into an  Agreement  and  Plan  of  Merger,  dated  as of the 3rd day of
October,  1999  (the  "Merger  Agreement").  (Capitalized  terms  used  in  this
Agreement and not defined herein but defined in the Merger  Agreement shall have
the meanings assigned thereto in the Merger Agreement); and

         WHEREAS,  as a condition and inducement to Grantee's  entering into the
Merger Agreement and in consideration therefor, Grantee has required that Issuer
agree, and Issuer has agreed, to grant Grantee the Option (as defined below);

         NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  mutual
covenants  and  agreements  set forth  herein and in the Merger  Agreement,  the
parties hereto agree as follows:

         SECTION  1.  Grant of  Option.  Issuer  hereby  grants  to  Grantee  an
unconditional,  irrevocable  option (the  "Option") to purchase,  subject to the
terms hereof,  up to 531,043 fully paid and  nonassessable  shares of the common
stock,  par value $.01 per share, of Issuer ("Common Stock") at a price equal to
$18.87 (such price, as adjusted as hereinafter  provided,  the "Option  Price").
The number of shares of Common  Stock that may be received  upon the exercise of
the Option and the Option Price are subject to  adjustment  as herein set forth.
In no event shall the number of shares of Common  Stock for which this Option is
exercisable exceed 19.9% of the number of shares of Common Stock then issued and
outstanding  (without  consideration of any shares of Common Stock subject to or
issued pursuant to the Option).

         SECTION 2. Exercise of Option.  (a) Grantee may exercise the Option, in
whole or part, at any time and from time to time  following the  occurrence of a
Purchase Event (as defined below);  provided that the Option shall terminate and
be of no further  force and effect  upon the  earliest  to occur of (i) the time
immediately  prior to the  Effective  Time,  (ii) a  termination  of the  Merger
Agreement in accordance  with the terms  thereof  prior to the  occurrence of an
Extension Event, other than a termination of the Merger Agreement by the Grantee
pursuant to Section  9.02(a)(2),  Section 9.02(c) or Section 9.02(d)(2) thereof,
or (iii) 12 months after a  termination  of the Merger  Agreement  following the
occurrence of an Extension  Event (as defined  below) or after a termination  of
the Merger Agreement by Grantee pursuant to Section 9.02(a)(2),  Section 9.02(c)
or Section 9.02(d)(2) thereof, and provided further, that any purchase of Common
Stock upon  exercise  of the Option  shall be subject  to  applicable  law,  and
provided further, that the Option may not be exercised,  nor may Grantee require
Issuer to repurchase  the Option (as set forth in Section 7 hereof),  if, at the
time of exercise or  repurchase,  Grantee is in material  breach of any material
covenant or  obligation  contained  in the Merger  Agreement  and, if the Merger
Agreement has not terminated prior thereto,  such breach would entitle Issuer to
terminate the Merger  Agreement.  The events described in clauses (i) - (iii) in
the  preceding  sentence are  hereinafter  collectively  referred to as Exercise
Termination Events. As provided in Section 8, the rights set forth therein shall
terminate upon an Exercise  Termination Event and, as provided in Sections 6 and
7 hereof,  the  rights to deliver  requests  pursuant  to  Sections 6 or 7 shall
terminate 12 months after an Exercise Termination Event,  subject, in such case,
to the provisions of Section 9.

         (b) The term "Extension  Event" shall mean any of the following  events
or transactions  occurring without the Grantee's prior written consent after the
date hereof:

                  (i)  Issuer  or any  of  its  subsidiaries  (each  an  "Issuer
Subsidiary"),  shall have entered into an agreement to engage in an  Acquisition
Transaction  (as defined  below) with any person (the term "person" for purposes
of this Agreement  having the meaning  assigned  thereto in Sections 3(a)(9) and
13(d)(3) of the  Securities  Exchange Act of 1934,  as amended (the  "Securities
Exchange Act"), and the rules and regulations  thereunder) other than Grantee or
any of its subsidiaries (each a "Grantee  Subsidiary") or the Board of Directors
of Issuer shall have  recommended  that the  shareholders  of Issuer  approve or
accept any  Acquisition  Transaction  with any person  other than Grantee or any
Grantee


<PAGE>



Subsidiary. For purposes of this Agreement, "Acquisition Transaction" shall mean
(w) a merger or consolidation,  or any similar transaction,  involving Issuer or
any of Issuer's  banking  subsidiaries  ("Bank  Subsidiaries"),  (x) a purchase,
lease or other  acquisition of 10% or more of the aggregate  value of the assets
or  deposits  of  Issuer  or  any  Bank  Subsidiary,  (y) a  purchase  or  other
acquisition  (including  by way of  merger,  consolidation,  share  exchange  or
otherwise) of securities  representing 10% or more of the voting power of Issuer
or a Bank Subsidiary,  or (z) any substantially  similar transaction,  provided,
however,  that in no  event  shall  (i) any  merger,  consolidation  or  similar
transaction  involving  Issuer  or any  Bank  Subsidiary  in  which  the  voting
securities of Issuer outstanding immediately prior thereto continue to represent
(either by remaining  outstanding or being  converted into voting  securities of
the  surviving  entity of any such  transaction)  at least  75% of the  combined
voting  power of the voting  securities  of the Issuer or the  surviving  entity
outstanding  after the  consummation of such merger,  consolidation,  or similar
transaction,  or (ii) any internal merger or consolidation involving only Issuer
and/or Issuer Subsidiaries, be deemed to be an Acquisition Transaction, provided
that any such  transaction  is not entered into in violation of the terms of the
Merger Agreement;

                  (ii) Any person (other than Grantee or any Grantee Subsidiary)
shall have  acquired  beneficial  ownership  or the right to acquire  beneficial
ownership of securities  representing  10% or more of the aggregate voting power
of Issuer or any Bank Subsidiary (the term  "beneficial  ownership" for purposes
of this Agreement  having the meaning  assigned  thereto in Section 13(d) of the
Securities Exchange Act, and the rules and regulations thereunder);

                  (iii) Any person other than Grantee or any Grantee  Subsidiary
shall have made a bona fide  proposal to Issuer or its  shareholders,  by public
announcement or written  communication  that is or becomes the subject of public
disclosure,  to  engage  in  an  Acquisition  Transaction  (including,   without
limitation,  any situation in which any person other than Grantee or any Grantee
Subsidiary shall have commenced (as such term is defined in Rule 14d-2 under the
Exchange Act), or shall have filed a registration statement under the Securities
Act of 1933, as amended (the "Securities  Act"), with respect to, a tender offer
or  exchange  offer to  purchase  any shares of Common  Stock  such  that,  upon
consummation  of  such  offer,  such  person  would  own or  control  securities
representing  10% or more of the  aggregate  voting  power of Issuer or any Bank
Subsidiary);

                  (iv)  After any  person  other  than  Grantee  or any  Grantee
Subsidiary  has made or  disclosed  an intention to make a proposal to Issuer or
its  shareholders  to engage in an  Acquisition  Transaction,  Issuer shall have
breached any covenant or obligation  contained in the Merger  Agreement and such
breach (x) would entitle Grantee to terminate the Merger Agreement and (y) shall
not have been cured prior to the Notice Date (as defined below);

                  (v) Any person  other than  Grantee or any Grantee  Subsidiary
shall have filed an application  with, or given a notice to, whether in draft or
final form,  the Board of Governors of the Federal  Reserve System (the "Federal
Reserve Board") or other governmental  authority or regulatory or administrative
agency or commission,  domestic or foreign (each, a  "Governmental  Authority"),
for approval to engage in an Acquisition Transaction;

                  (vi) A meeting of  shareholders  shall not have been called by
the Board of Directors of Issuer in  accordance  with Section 4.03 of the Merger
Agreement or held or shall have been  canceled,  or Issuer's  Board of Directors
shall have withdrawn or modified in a manner adverse to the  consummation of the
Merger  its  unanimous  recommendation  of the  Merger  or made an  announcement
prospectively with respect to such a withdrawal or modification; or

                  (vii) any Purchase Event (as defined below), other than events
described at Section 2(c)(iii).

         (c) The term "Purchase Event" shall mean either of the following events
or transactions occurring after the date hereof:

                  (i) The  acquisition  by any person  other than Grantee or any
Grantee  Subsidiary of beneficial  ownership of securities  representing  25% or
more of the aggregate voting power of Issuer or any Bank Subsidiary;

                  (ii) An occurrence of the event described in Section  2(b)(i),
except that for purposes of determining  whether the event  described in Section
2(b)(i)  has  occurred  for  purposes  of this  subsection  (ii) the  percentage
referred to in clauses (x) and (y) of the definition of Acquisition  Transaction
which is incorporated into said Section 2(b)(i) shall be 25%; or

                                       -2-

<PAGE>



                  (iii) the holders of Common Stock shall not have  approved the
Merger  Agreement  at the meeting of such  shareholders  held for the purpose of
voting on the Merger  Agreement,  such meeting shall not have been called by the
Board of  Directors  of Issuer in  accordance  with  Section  4.03 of the Merger
Agreement or held or shall have been  canceled,  or Issuer's  Board of Directors
shall have withdrawn or modified in a manner adverse to the  consummation of the
Merger  its  unanimous  recommendation  of the  Merger  or made an  announcement
prospectively  with respect to such a withdrawal or  modification;  in each case
after an Extension Event other than any event described at Section 2 (b)(vi)

         (d) Issuer shall notify  Grantee  promptly in writing of the occurrence
of any Extension Event or Purchase Event;  provided however,  that the giving of
such  notice  by Issuer  shall not be a  condition  to the right of  Grantee  to
exercise the Option.

         (e) In the event that Grantee is entitled to and wishes to exercise the
Option, it shall send to Issuer a written notice (the date of which being herein
referred to as the "Notice  Date")  specifying (i) the total number of shares of
Common Stock it will purchase  pursuant to such exercise,  (ii) a place and date
not earlier than three  business  days nor later than 90 business  days from the
Notice Date for the closing of such purchase (the "Closing Date") and (iii) that
the  proposed  exercise of the Option shall be revocable by Grantee in the event
that the  transaction  constituting  a  Purchase  Event  that gives rise to such
written notice shall not have been consummated  prior to exercise of the Option;
provided that if prior  notification to or approval of the Federal Reserve Board
or any  other  Governmental  Authority  is  required  in  connection  with  such
purchase,  Grantee shall promptly file the required  notice or  application  for
approval  and shall  expeditiously  process the same and the period of time that
otherwise  would run pursuant to this  sentence  shall run from the later of (x)
the date on  which  any  required  notification  periods  have  expired  or been
terminated  and (y) the date on which such  approvals have been obtained and any
requisite waiting period or periods shall have expired.  For purposes of Section
2(a),  any  exercise  of the Option  shall be deemed to occur on the Notice Date
relating  thereto.  Grantee shall have the right to revoke its proposed exercise
of the Option in the event that the  transaction  constituting  a Purchase Event
that gives rise to such right to exercise shall not have been consummated  prior
to  exercise  of the  Option,  pursuant  to the  statement  of such right in the
written notice exercising the Option as provided in clause 2(e)(iii) above.

         (f) At the closing referred to in Section 2(e), Grantee shall surrender
this Agreement  (and the Option granted  hereby) to Issuer and pay to Issuer the
aggregate Option Price for the shares of Common Stock purchased  pursuant to the
exercise of the Option in immediately available funds by wire transfer to a bank
account  designated  by Issuer;  provided,  however,  that failure or refusal of
Issuer  to  designate  such a bank  account  shall  not  preclude  Grantee  from
exercising the Option.

         (g) At such closing,  simultaneously with the delivery of the aggregate
Option Price in immediately  available funds as provided in Section 2(f), Issuer
shall deliver to Grantee a certificate or certificates  representing  the number
of shares of Common  Stock  purchased  by Grantee  and, if the Option  should be
exercised in part only, a new Option Agreement  granting a new Option evidencing
the rights of Grantee  thereof to  purchase  the balance of the shares of Common
Stock purchasable hereunder.

         (h)  Certificates  for Common Stock  delivered  at a closing  hereunder
shall be endorsed with a restrictive legend substantially as follows:

         "The transfer of the shares  represented by this certificate is subject
         to resale  restrictions  arising under the  Securities  Act of 1933, as
         amended,  and to certain  provisions  of an  agreement  between  Summit
         Bancorp.  and NMBT CORP ("Issuer")  dated as of the 4th day of October,
         1999. A copy of such  agreement is on file at the  principal  office of
         Issuer and will be provided to the holder  hereof  without  charge upon
         receipt by Issuer of a written request therefor."

It is understood and agreed that:  (i) the reference to the resale  restrictions
of the  Securities  Act in the above  legend  shall be  removed by  delivery  of
substitute certificate(s) without such reference if Grantee shall have delivered
to  Issuer a copy of a letter  from the  staff of the  Securities  and  Exchange
Commission  (the  "SEC"),  or an  opinion  of  counsel,  in form  and  substance
reasonably  satisfactory  to  Issuer,  to the  effect  that  such  legend is not
required  for  purposes  of  the  Securities  Act;  (ii)  the  reference  to the
provisions of this Agreement in the above legend shall be removed by delivery of
substitute certificate(s) without such reference if the shares have been sold or
transferred  in  compliance  with the  provisions  of this  Agreement  and under
circumstances that do not require the retention of such reference; and (iii) the
legend shall be removed in its entirety

                                       -3-

<PAGE>



if the conditions in the preceding  clauses (i) and (ii) are both satisfied.  In
addition,  such  certificates  shall bear any other legend as may be required by
law.

         (i) Upon the  giving by  Grantee  to Issuer  of the  written  notice of
exercise  of the  Option  provided  for in  Section  2(e) and the  tender of the
aggregate  Option  Price on the Closing  Date in  immediately  available  funds,
Grantee shall be deemed to be the holder of record of the shares of Common Stock
issuable upon such  exercise,  notwithstanding  that the stock transfer books of
Issuer  shall then be closed or that  certificates  representing  such shares of
Common Stock shall not then  actually be delivered to Grantee.  Issuer shall pay
all expenses and any and all United  States  federal,  state and local taxes and
other charges that may be payable in connection with the preparation,  issue and
delivery of stock  certificates  under this  Section 2 in the name of Grantee or
its nominee.

         SECTION 3. Reservation of Shares.  Issuer agrees:  (i) that it shall at
all times until the  termination  of this  Agreement  have reserved for issuance
upon the exercise of the Option that number of authorized shares of Common Stock
equal to the maximum  number of shares of Common Stock at any time and from time
to time issuable  hereunder,  all of which shares will,  upon issuance  pursuant
hereto,  be duly  authorized,  validly issued,  fully paid,  nonassessable,  and
delivered  free and  clear  of all  claims,  liens,  encumbrances  and  security
interests and not subject to any  preemptive  rights;  (ii) that it will not, by
amendment  of  its   certificate  or  articles  of   incorporation   or  through
reorganization,  consolidation, merger, dissolution or sale of assets, or by any
other voluntary act, avoid or seek to avoid the observance or performance of any
of the  covenants,  stipulations  or  conditions  to be  observed  or  performed
hereunder by Issuer;  (iii) promptly to take all action as may from time to time
be required (including (x) complying with all premerger notification,  reporting
and waiting period  requirements  specified in 15 U.S.C. ss. 18a and regulations
promulgated  thereunder and (y) in the event, under the Bank Holding Company Act
of 1956, as amended (the "BHC Act"),  or the Change in Bank Control Act of 1978,
as amended, or any state banking law, prior approval of or notice to the Federal
Reserve  Board or to any other  Governmental  Authority is necessary  before the
Option may be exercised, cooperating with Grantee in preparing such applications
or notices and providing such  information to the Federal Reserve Board and each
other Governmental  Authority as they may require) in order to permit Grantee to
exercise  the Option and Issuer duly and  effectively  to issue shares of Common
Stock pursuant  hereto;  and (iv) to take all action  provided herein to protect
the rights of Grantee against dilution.

         SECTION 4. Division of Option.  This  Agreement (and the Option granted
hereby)  are  exchangeable,  without  expense,  at the option of  Grantee,  upon
presentation  and surrender of this Agreement at the principal office of Issuer,
for other agreements providing for Options of different  denominations entitling
the  holder  thereof  to  purchase,  on the same  terms and  subject to the same
conditions as are set forth  herein,  in the aggregate the same number of shares
of Common Stock  purchasable  hereunder.  The terms  "Agreement" and "Option" as
used herein include any agreements and related  options for which this Agreement
(and the Option  granted  hereby) may be  exchanged.  Upon  receipt by Issuer of
evidence  reasonably  satisfactory  to it of the  loss,  theft,  destruction  or
mutilation of this Agreement, and (in the case of loss, theft or destruction) of
reasonably satisfactory indemnification,  and upon surrender and cancellation of
this Agreement, if mutilated, Issuer will execute and deliver a new Agreement of
like  tenor  and date.  Any such new  Agreement  executed  and  delivered  shall
constitute an additional  contractual  obligation on the part of Issuer, whether
or not the Agreement so lost,  stolen,  destroyed or mutilated shall at any time
be enforceable by anyone.

         SECTION 5.  Adjustment  upon  Change of  Capitalization.  The number of
shares of Common  Stock  purchasable  upon the  exercise of the Option  shall be
subject to adjustment from time to time as follows:

         (a)  Subject  to the last  sentence  of  Section 1, in the event of any
change in the Common  Stock by reason of stock  dividends,  split-ups,  mergers,
recapitalizations,  combinations, subdivisions, conversions, exchanges of shares
or the like,  the type and  number of shares of Common  Stock  purchasable  upon
exercise hereof shall be  appropriately  adjusted and proper  provision shall be
made so that, in the event that any additional  shares of Common Stock are to be
issued or otherwise to become  outstanding as a result of any such change (other
than  pursuant  to an exercise  of the  Option),  the number of shares of Common
Stock that remain  subject to the Option shall be increased so that,  after such
issuance and together with shares of Common Stock previously  issued pursuant to
the  exercise  of the Option  (as  adjusted  on account of any of the  foregoing
changes in the Common Stock),  it equals 19.9% of the number of shares of Common
Stock then issued and outstanding (without consideration of any shares of Common
Stock subject to or issued pursuant to the Option).

         (b)  Whenever  the number of shares of Common  Stock  purchasable  upon
exercise  hereof is adjusted as  provided  in this  Section 5, the Option  Price
shall be adjusted by multiplying the Option Price by a fraction, the numerator

                                       -4-

<PAGE>



of which  shall be equal to the  number of shares  of Common  Stock  purchasable
prior to the  adjustment  and the  denominator  of  which  shall be equal to the
number of shares of Common Stock purchasable  after the adjustment.  In no event
shall the  Option  Price be  adjusted  to less than the par value of the  Common
Stock to be issued at such Option Price.

         (c) It is intended by the parties hereto that the adjustments  provided
by this Section 5 shall fully  preserve the economic  benefits of this Agreement
for Grantee.

         SECTION 6.        Registration Rights.

         (a) Demand  Registration  Rights.  After the  occurrence  of a Purchase
Event that occurs prior to an Exercise  Termination Event,  Issuer shall, at the
request of  Grantee  (whether  on its own behalf or on behalf of any  subsequent
holder  of  the  Option  (or  part  thereof)  delivered  prior  to  an  Exercise
Termination  Event or at the  request of a holder of any of the shares of Common
Stock  issued  pursuant  hereto)  delivered  no later  than 12  months  after an
Exercise  Termination  Event,   promptly  prepare,   file  and  keep  current  a
registration  statement on such form as is available  and the Issuer is eligible
to use under the Securities Act relating to a delayed or continuous offering (as
contemplated  by Rule 415 of the SEC under the  Securities  Act or any successor
rule or regulation) (a "shelf registration") covering this Option and any shares
issued and issuable  pursuant to the Option (the "Option  Shares") and shall use
its best efforts to cause such  registration  statement to become  effective and
remain  current and to qualify  this  Option or any such Option  Shares or other
securities  for sale  under any  applicable  state  securities  laws in order to
permit the sale or other  disposition  of this  Option or any  Option  Shares in
accordance with any plan of disposition requested by Grantee; provided, however,
that  Issuer  may  postpone  filing  a  registration  statement  relating  to  a
registration  request by Grantee  under this Section 6 for a period of time (not
in  excess  of 90  days)  if in its  judgment  such  filing  would  require  the
disclosure of material  information that Issuer has a bona fide business purpose
for preserving as  confidential.  Issuer will use its best efforts to cause such
registration  statement first to become  effective as soon as practicable  after
the filing thereof and then to remain effective for such period not in excess of
180 days from the day such registration  statement first becomes  effective,  or
such   shorter  time  as  may  be  necessary  to  effect  such  sales  or  other
dispositions.  Grantee  shall have the right to demand  two such  registrations.
Grantee  shall  provide  all  information  reasonably  requested  by Issuer  for
inclusion in any  registration  statement to be filed  hereunder.  In connection
with any such  registration,  Issuer and Grantee  shall  provide each other with
representations,   warranties,   and  other  agreements   customarily  given  in
connection  with such  registrations.  If requested by any Grantee in connection
with  such  registration,  Issuer  and  Grantee  shall  become  a  party  to any
underwriting  agreement  relating to the sale of Option Shares,  but only to the
extent of  obligating  themselves  in  respect of  representations,  warranties,
indemnities  and other  agreements  customarily  included  in such  underwriting
agreements.  Notwithstanding  the  foregoing,  if Grantee  revokes any  exercise
notice or fails to  exercise  any Option  with  respect to any  exercise  notice
pursuant  to  Section  2(e),  Issuer  shall not be  obligated  to  continue  any
registration process with respect to the sale of Option Shares.

         (b) Additional  Persons With  Registration  Rights.  Upon receiving any
request  under this  Section 6 from any  Grantee,  Issuer  agrees to send a copy
thereof  to any other  person  known to Issuer to be  entitled  to  registration
rights under this Section 6, in each case by promptly mailing the same,  postage
prepaid,  to the  address of record of the  persons  entitled  to  receive  such
copies.  Notwithstanding  anything to the contrary contained herein, in no event
shall Issuer be obligated to effect more than two registrations pursuant to this
Section 6 by reason of the fact that there  shall be more than one  Grantee as a
result of any assignment or division of this Agreement.

         (c)  Expenses.   Except  where  applicable  state  law  prohibits  such
payments,   Issuer  will  pay  all  expenses   (including   without   limitation
registration fees, qualification fees, blue sky fees and expenses (including the
fees and expenses of counsel), legal expenses, including the reasonable fees and
expenses of one counsel to the holders whose Option Shares are being registered,
printing  expenses and the costs of special  audits or "cold  comfort"  letters,
expenses of  underwriters,  excluding  discounts and  commissions  but including
liability insurance if Issuer so desires or the underwriters so require, and the
reasonable  fees and expenses of any  necessary  special  experts) in connection
with each  registration  pursuant  to this  Section  6  (including  the  related
offerings and sales by holders of Option  Shares) and all other  qualifications,
notification or exemptions pursuant to Section 6.

         (d)  Indemnification.  In connection with any  registration  under this
Section 6, Issuer hereby indemnifies the Grantee, and each officer, director and
controlling  person of Grantee,  and each  underwriter  thereof,  including each
person,  if any who controls  such holder or  underwriter  within the meaning of
Section 15 of the Securities Act, against all expenses,  losses, claims, damages
and liabilities caused by any untrue, or alleged untrue,  statement contained in
any registration

                                       -5-

<PAGE>



statement or prospectus or  notification  or offering  circular  (including  any
amendments or supplements thereto) or any preliminary  prospectus,  or caused by
any omission,  or alleged omission, to state therein a material fact required to
be stated  therein or necessary to make the statements  therein not  misleading,
except insofar as such expenses,  losses, claims, damages or liabilities of such
indemnified party are caused by any untrue statement or alleged untrue statement
that was included by Issuer in any such registration  statement or prospectus or
notification  or offering  circular  (including  any  amendments or  supplements
thereto) in reliance  upon and in  conformity  with,  information  furnished  in
writing to Issuer by such  indemnified  party  expressly  for use  therein,  and
Issuer and each  officer,  director  and  controlling  person of Issuer shall be
indemnified by such Grantee, or by such underwriter, as the case may be, for all
such expenses,  losses, claims, damages and liabilities caused by any untrue, or
alleged untrue,  statement, that was included by Issuer in any such registration
statement or prospectus or  notification  or offering  circular  (including  any
amendments or supplements  thereto) in reliance  upon,  and in conformity  with,
information  furnished in writing to Issuer by such holder or such  underwriter,
as the case may be, expressly for such use.

         Promptly upon receipt by a party indemnified under this Section 6(d) of
notice of the  commencement  of any action  against  such  indemnified  party in
respect  of  which  indemnity  or  reimbursement   may  be  sought  against  any
indemnifying  party under this Section 6(d), such indemnified party shall notify
the indemnifying  party in writing of the  commencement of such action,  but the
failure  so to  notify  the  indemnifying  party  shall  not  relieve  it of any
liability  which it may  otherwise  have to any  indemnified  party  under  this
Section 6(d). In case notice of  commencement  of any such action shall be given
to the indemnifying  party as above provided,  the  indemnifying  party shall be
entitled  to  participate  in and, to the extent it may wish,  jointly  with any
other  indemnifying  party  similarly  notified,  to assume the  defense of such
action at its own expense, with counsel chosen by it and reasonably satisfactory
to such indemnified  party. The indemnified party shall have the right to employ
separate counsel in any such action and participate in the defense thereof,  but
the  fees  and  expenses  of  such  counsel  (other  than  reasonable  costs  of
investigation)   shall  be  paid  by  the  indemnified   party  unless  (i)  the
indemnifying  party either agrees to pay the same, (ii) the  indemnifying  party
fails to assume the  defense of such  action with  counsel  satisfactory  to the
indemnified  party, or (iii) the  indemnified  party has been advised by counsel
that one or more legal defenses may be available to the indemnifying  party that
may be contrary to the interests of the indemnified party. No indemnifying party
shall be liable for the fees and expenses of more than one separate  counsel for
all indemnified  parties or for any settlement entered into without its consent,
which consent may not be unreasonably withheld.

         If the indemnification provided for in this Section 6(d) is unavailable
to a party  otherwise  entitled to be  indemnified  in respect of any  expenses,
losses, claims, damages or liabilities referred to herein, then the indemnifying
party, in lieu of indemnifying such party otherwise  entitled to be indemnified,
shall  contribute to the amount paid or payable by such party to be  indemnified
as a result of such  expenses,  losses,  claims,  damages or liabilities in such
proportion  as is  appropriate  to reflect  the  relative  fault of Issuer,  the
Grantee and the  underwriters  in  connection  with the  statements or omissions
which resulted in such expenses, losses, claims, damages or liabilities, as well
as any other relevant equitable considerations.  The amount paid or payable by a
party as a result of the  expenses,  losses,  claims,  damages  and  liabilities
referred to above shall be deemed to include any legal or other fees or expenses
reasonably  incurred by such party in connection with investigating or defending
any action or claim;  provided,  however,  that in no case shall any  Grantee be
responsible,  in the  aggregate,  for any  amount in excess of the net  offering
proceeds  attributable to its Option Shares included in the offering.  No person
guilty of fraudulent  misrepresentation  (within the meaning of Section 11(f) of
the Securities  Act) shall be entitled to  contribution  from any person who was
not guilty of such fraudulent  misrepresentation.  Any obligation by any Grantee
to indemnify shall be several and not joint with other Grantees.

         (e)  Miscellaneous  Reporting.  Issuer shall comply with all  reporting
requirements and will do all such other things as may be necessary to permit the
expeditious  sale at any time of any  Option  Shares by the  Grantee  thereof in
accordance  with  and  to  the  extent  permitted  by  any  rule  or  regulation
promulgated by the SEC from time to time,  including,  without limitation,  Rule
144A.  Issuer  shall at its expense  provide the  Grantee  with any  information
necessary in connection  with the  completion and filing of any reports or forms
required to be filed by Grantee under the Securities Act or the Exchange Act, or
required  pursuant  to any  state  securities  laws or the  rules  of any  stock
exchange.

         SECTION 7.  Repurchase at the Option of Grantee or Owner.  (a) Upon the
occurrence  of a Repurchase  Event (as defined  below),  (i) at the request (the
date of such request being the "Request Date") of Grantee, delivered prior to an
Exercise  Termination Event,  Issuer (or any successor thereto) shall repurchase
the Option from Grantee at a price (the "Option  Repurchase Price") equal to the
amount by which (A) the  market/offer  price (as defined  below) exceeds (B) the
Option Price,  multiplied by the number of shares for which this Option may then
be exercised and (ii) at the request (the date

                                       -6-

<PAGE>
of such  request  being the "Request  Date") of the owner of Option  Shares from
time to time (the  "Owner"),  delivered  within 12 months of the occurrence of a
Repurchase  Event (or such later period as provided in Section 9),  Issuer shall
repurchase  such  number of the Option  Shares from the Owner as the Owner shall
designate  at a  price  (the  "Option  Share  Repurchase  Price")  equal  to the
market/offer price multiplied by the number of Option Shares so designated.  The
term  "market/offer  price" shall mean the highest of (i) the price per share of
Common  Stock at which a tender offer or exchange  offer  therefor has been made
after the date  hereof and on or prior to the Request  Date,  (ii) the price per
share of Common  Stock  paid or to be paid by any  third  party  pursuant  to an
agreement with Issuer (whether by way of a merger,  consolidation or otherwise),
(iii) the highest  last sale price for shares of Common  Stock within the 90-day
period  ending on the  Request  Date  quoted on the Nasdaq  National  Market (as
reported  by The Wall  Street  Journal,  or, if not  reported  thereby,  another
authoritative  source),  (iv) in the event of a sale of all or substantially all
of Issuer's  assets,  the sum of the price paid in such sale for such assets and
the current  market value of the  remaining  assets of Issuer as determined by a
nationally-recognized independent investment banking firm selected by Grantee or
the Owner,  as the case may be,  divided by the number of shares of Common Stock
outstanding at the time of such sale. In determining the market/offer price, the
value  of   consideration   other   than   cash   shall  be   determined   by  a
nationally-recognized independent investment banking firm selected by Grantee or
the Owner,  as the case may be,  whose  determination  shall be  conclusive  and
binding on all parties.

         (b) Grantee or the Owner, as the case may be, may exercise its right to
require  Issuer to repurchase  the Option  and/or any Option Shares  pursuant to
this  Section 7 by  surrendering  for such purpose to Issuer,  at its  principal
office,  a copy  of  this  Agreement  or  certificates  for  Option  Shares,  as
applicable,  accompanied by a written notice or notices  stating that Grantee or
the Owner, as the case may be, elects to require Issuer to repurchase the Option
and/or the Option Shares in accordance with the provisions of this Section 7. As
promptly as practicable,  and in any event within the later to occur of (x) five
business days after the surrender of the Option and/or certificates representing
Option Shares and the receipt of such notice or notices relating thereto and (y)
the time that is  immediately  prior to the  occurrence  of a Repurchase  Event,
Issuer shall  deliver or cause to be delivered to Grantee the Option  Repurchase
Price or to the Owner the Option Share  Repurchase Price therefor or the portion
thereof that Issuer is not then prohibited from so delivering  under  applicable
law and regulation.

         (c) Issuer hereby  undertakes to use its  reasonable  efforts to obtain
all required  regulatory and legal approvals and to file any required notices as
promptly as practicable in order to accomplish  any repurchase  contemplated  by
this  Section 7.  Nonetheless,  to the extent  that Issuer is  prohibited  under
applicable law or  regulation,  from  repurchasing  the Option and/or the Option
Shares in full,  Issuer shall  promptly so notify  Grantee  and/or the Owner and
thereafter  deliver  or cause to be  delivered,  from time to time,  to  Grantee
and/or the Owner, as appropriate, the portion of the Option Repurchase Price and
the Option Share Repurchase Price, respectively, that it is no longer prohibited
from delivering,  within five business days after the date on which Issuer is no
longer so  prohibited;  provided,  however,  that if  Issuer  at any time  after
delivery of a notice of repurchase  pursuant to Section 7(b) is prohibited under
applicable law or regulation,  from  delivering to Grantee and/or the Owner,  as
appropriate,  the Option  Repurchase Price or the Option Share Repurchase Price,
respectively,  in full or in any  substantial  part,  Grantee or the  Owner,  as
appropriate,  may revoke its  notice of  repurchase  of the Option or the Option
Shares  either in whole or in part  whereupon,  in the case of a  revocation  in
part,  Issuer  shall  promptly  (i)  deliver  to Grantee  and/or  the Owner,  as
appropriate,  that  portion of the  Option  Purchase  Price or the Option  Share
Repurchase Price that Issuer is not prohibited from delivering after taking into
account any such  revocation  and (ii) deliver,  as  appropriate,  either (A) to
Grantee, a new Agreement evidencing the right of Grantee to purchase that number
of shares  of  Common  Stock  equal to the  number  of  shares  of Common  Stock
purchasable  immediately  prior to the delivery of the notice of repurchase less
the  number of shares of Common  Stock  covered  by the  portion  of the  Option
repurchased or (B) to the Owner,  a certificate  for the number of Option Shares
covered by the revocation.

         (d) For purposes of this Section 7, a Repurchase  Event shall be deemed
to have  occurred  (i)  upon the  consummation  of any  Acquisition  Transaction
involving  Issuer or any Bank  Subsidiary  or (ii) upon the  acquisition  by any
person of  beneficial  ownership of securities  representing  25% or more of the
aggregate voting power of Issuer or any Bank  Subsidiary,  provided that no such
event shall  constitute a Repurchase  Event unless an Extension Event shall have
occurred prior to an Exercise  Termination  Event. The parties hereto agree that
Issuer's  obligations  to  repurchase  the  Option or Option  Shares  under this
Section 7 shall not terminate  upon the  occurrence  of an Exercise  Termination
Event if an Extension  Event shall have occurred  prior to the  occurrence of an
Exercise Termination Event.

         (e) Issuer  shall not enter into any  agreement  with any party  (other
than Grantee or a Grantee Subsidiary) for an Acquisition  Transaction unless the
other party  thereto  assumes  all the  obligations  of Issuer  pursuant to this
Section 7 in the event that Grantee or the Owner elects, in its sole discretion,
to require such other party to perform such obligations.

                                       -7-
<PAGE>



         SECTION 8. Substitute Option in the Event of Corporate  Change.  (a) In
the event that prior to an Exercise  Termination Event,  Issuer shall enter into
an agreement (i) to consolidate or merge with any person,  other than Grantee or
a Grantee Subsidiary,  and shall not be the continuing or surviving  corporation
of such consolidation or merger,  (ii) to permit any person,  other than Grantee
or a Grantee Subsidiary, to merge into Issuer and Issuer shall be the continuing
or  surviving  corporation,  but,  in  connection  with  such  merger,  the then
outstanding  shares of Common Stock shall be changed into or exchanged for stock
or other  securities  of any other  person or cash or any other  property or the
then  outstanding  shares of Common Stock shall after such merger represent less
than 50% of the aggregate  voting power of the merged company,  or (iii) to sell
or  otherwise  transfer  all or  substantially  all of its assets to any person,
other than Grantee or a Grantee  Subsidiary,  then,  and in each such case,  the
agreement  governing such  transaction  shall make proper  provision so that the
Option shall,  upon the  consummation of such transaction and upon the terms and
conditions set forth herein, be converted into, or exchanged for, an option (the
"Substitute  Option"),  at the election of Grantee,  of either (x) the Acquiring
Corporation  (as defined  below) or (y) any person that  controls the  Acquiring
Corporation  (the Acquiring  Corporation and any such  controlling  person being
hereinafter referred to as the Substitute Option Issuer)

         (b) The  Substitute  Option  shall be  exercisable  for such  number of
shares of the Substitute Common Stock (as is hereinafter defined) as is equal to
the  market/offer  price (as defined in Section 7)  multiplied  by the number of
shares of the Common  Stock for which the Option  was  theretofore  exercisable,
divided by the Average Price (as is  hereinafter  defined) The exercise price of
the Substitute  Option per share of the Substitute Common Stock (the "Substitute
Purchase  Price")  shall  then be  equal to the  Option  Price  multiplied  by a
fraction in which the  numerator is the number of shares of the Common Stock for
which the Option was  theretofore  exercisable and the denominator is the number
of shares  of  Substitute  Common  Stock  for  which  the  Substitute  Option is
exercisable.

         (c) The  Substitute  Option shall  otherwise have the same terms as the
Option,  provided that if the terms of the Substitute  Option cannot,  for legal
reasons,  be the same as the Option,  such terms shall be as similar as possible
and in no event less advantageous to Grantee, provided further that the terms of
the  Substitute  Option  shall  include (by way of example  and not  limitation)
provisions  for the repurchase of the  Substitute  Option and Substitute  Common
Stock by the  Substitute  Option  Issuer  on the same  terms and  conditions  as
provided in Section 7.

         (d) The following terms have the meanings indicated:

                  (i) "Acquiring  Corporation"  shall mean (i) the continuing or
         surviving  corporation  of a  consolidation  or merger  with Issuer (if
         other  than  Issuer),  (ii)  Issuer in a merger in which  Issuer is the
         continuing or surviving person,  and (iii) the transferee of all or any
         substantial  part of the  Issuer's  assets  (or the  assets  of  Issuer
         Subsidiaries).

                  (ii)  "Substitute  Common  Stock"  shall mean the common stock
         issued by the Substitute  Option Issuer upon exercise of the Substitute
         Option.

                  (iii)  "Average  Price" shall mean the average last sale price
         of a share of the  Substitute  Common  Stock (as  reported  by The Wall
         Street Journal or, if not reported  therein,  by another  authoritative
         source)  for the one  year  immediately  preceding  the  consolidation,
         merger or sale in  question,  but in no event higher than the last sale
         price of the shares of the Substitute Common Stock on the day preceding
         such  consolidation,  merger  or sale;  provided  that if Issuer is the
         issuer of the  Substitute  Option,  the Average Price shall be computed
         with respect to a share of common  stock  issued by Issuer,  the person
         merging into Issuer or by any company  which  controls or is controlled
         by such person, as Grantee may elect.

         (e) In no event, pursuant to any of the foregoing paragraphs, shall the
Substitute  Option be  exercisable  for more than 19.9% of the  aggregate of the
shares of the Substitute  Common Stock  outstanding prior to the exercise of the
Substitute  Option. In the event that the Substitute Option would be exercisable
for more than 19.9% of the  aggregate of the shares of  Substitute  Common Stock
but for this clause (e), the Substitute  Option Issuer shall make a cash payment
to Grantee equal to the excess of (i) the value of the Substitute Option without
giving  effect to the  limitation  in this clause (e) over (ii) the value of the
Substitute  Option after giving effect to the limitation in the clause (e). This
difference in value shall be determined  by a nationally  recognized  investment
banking firm selected by Grantee and the Substitute Option Issuer.

         SECTION 9. Extension of Time for Regulatory Approvals.  Notwithstanding
Sections 2(e), 6, 7 and 11, if

                                       -8-

<PAGE>



Grantee has given the notice  referred to in one or more of such  Sections,  the
exercise of the rights  specified in any such  Section  shall be extended (a) if
the exercise of such rights  requires  obtaining  regulatory  approvals,  to the
extent  necessary to obtain all  regulatory  approvals  for the exercise of such
rights,  and (b) to the extent  necessary to avoid liability under Section 16(b)
of the Securities  Exchange Act by reason of such exercise;  provided that in no
event shall any closing date occur more than 18 months after the related  Notice
Date, and, if the closing date shall not have occurred within such period due to
the failure to obtain any required  approval by the Federal Reserve Board or any
other  Governmental  Authority  despite the reasonable  efforts of Issuer or the
Substitute  Option  Issuer,  as the case may be, to obtain such  approvals,  the
exercise of the Option shall be deemed to have been  rescinded as of the related
Notice Date. In the event (a) Grantee receives  official notice that an approval
of the Federal Reserve Board or any other  Governmental  Authority  required for
the purchase and sale of the Option  Shares will not be issued or granted or (b)
a closing date has not occurred  within 18 months after the related  Notice Date
due to the  failure  to obtain  any such  required  approval,  Grantee  shall be
entitled  to  exercise  the Option in  connection  with the resale of the Option
Shares  pursuant to a  registration  statement as provided in Section 6. Nothing
contained in this Agreement shall restrict  Grantee from specifying  alternative
exercising of rights pursuant to Sections 2(e), 6, 7 and 11, hereof in the event
that the  exercising  of any such  rights  shall  not have  occurred  due to the
failure to obtain any required approval referred to in this Section 9.

         SECTION 10. Issuer Warranties. Issuer hereby represents and warrants to
Grantee as follows:

         (a) Issuer has the requisite  corporate  power and authority to execute
and deliver this  Agreement  and to  consummate  the  transactions  contemplated
hereby. The execution and delivery of this Agreement and the consummation of the
transactions  contemplated  hereby  have  been  duly  approved  by the  Board of
Directors of Issuer and no other corporate proceedings on the part of Issuer are
necessary to authorize  this  Agreement or to  consummate  the  transactions  so
contemplated.  This  Agreement  has been duly  executed  and  delivered  by, and
constitutes  a valid and binding  obligation  of,  Issuer,  enforceable  against
Issuer in accordance  with its terms,  except as  enforceability  thereof may be
limited by applicable  bankruptcy,  insolvency,  reorganization,  moratorium and
other similar laws affecting the enforcement of creditors'  rights generally and
institutions the deposits of which are insured by the Federal Deposit  Insurance
Corporation and except that the availability of the equitable remedy of specific
performance  or  injunctive  relief is  subject to the  discretion  of the court
before which any proceeding may be brought.

         (b) Issuer has taken all  necessary  corporate  action to authorize and
reserve and to permit it to issue, and at all times from the date hereof through
the  termination  of this  Agreement  in  accordance  with its  terms  will have
reserved for issuance upon the exercise of the Option,  that number of shares of
Common  Stock equal to the maximum  number of shares of Common Stock at any time
and from time to time  issuable  hereunder,  and all such shares,  upon issuance
pursuant  hereto,  will  be  duly  authorized,   validly  issued,   fully  paid,
nonassessable,  and will be  delivered  free and  clear  of all  claims,  liens,
encumbrances and security interests and not subject to any preemptive rights.

         (c) Upon receipt of the necessary  regulatory approvals as contemplated
by this  Agreement,  the execution,  delivery and  performance of this Agreement
does not or will not, and the  consummation by Issuer of any of the transactions
contemplated  hereby will not, constitute or result in (i) a breach or violation
of, or a default under, its certificate or articles of incorporation or by-laws,
or the comparable  governing  instruments of any of its subsidiaries,  or (ii) a
breach or violation of, or a default  under,  any  agreement,  lease,  contract,
note, mortgage,  indenture,  arrangement or other obligation of it or any of its
subsidiaries  (with or without the giving of notice,  the lapse of time or both)
or under any law,  rule,  ordinance or  regulation or judgment,  decree,  order,
award or governmental or  non-governmental  permit or license to which it or any
of its subsidiaries is subject, that would in any case give any other person the
ability to prevent or enjoin  Issuer's  performance  under this Agreement in any
material respect.

         SECTION 11. Assignment of Option by Grantee. (a) Neither of the parties
hereto may assign any of its rights or  delegate  any of its  obligations  under
this Agreement or the Option  created  hereunder to any other person without the
express written consent of the other party,  except that Grantee may assign this
Agreement or any of its rights  hereunder in whole or in part (i) at any time to
a subsidiary of Grantee,  and (ii) after the  occurrence of a Purchase  Event to
any Person; provided, however, that until the date 15 days following the date at
which the Federal Reserve Board approves an application by Grantee under the BHC
Act to acquire the shares of Common Stock subject to the Option, Grantee may not
assign  its  rights  under the Option  except in (A) a widely  dispersed  public
distribution,  (B) a private  placement in which no one party acquires the right
to purchase  securities  representing  in excess of 2% of the  aggregate  voting
power  of  Issuer,  (C) an  assignment  to a single  party  (e.g.,  a broker  or
investment banker) for the purpose of conducting a widely dispersed public

                                       -9-

<PAGE>



distribution  on  Grantee's  behalf,  or (D) any other  manner  approved  by the
Federal Reserve Board.  Grantee will pay any reasonable  out-of-pocket costs and
expenses of Issuer in connection with any such assignment. The term "Grantee" as
used in this  Agreement  shall  also be deemed to refer to  Grantee's  permitted
assigns.

         (b) Any  assignment of rights of Grantee to any  permitted  assignee of
Grantee  hereunder  shall bear the restrictive  legend at the beginning  thereof
substantially as follows:

         "The  transfer of the option  represented  by this  assignment  and the
         related  option  agreement  is subject to resale  restrictions  arising
         under the Securities Act of 1933, as amended and to certain  provisions
         of an agreement between Summit Bancorp.  and NMBT CORP ("Issuer") dated
         as of the 4th day of October, 1999. A copy of such agreement is on file
         at the principal office of Issuer and will be provided to any permitted
         assignee  of the  Option  without  change  upon  receipt by Issuer of a
         written request therefor."

It is understood and agreed that (i) the reference to the resale restrictions of
the  Securities  Act in the  above  legend  shall  be  removed  by  delivery  of
substitute assignments without such reference if Grantee shall have delivered to
Issuer a copy of a letter  from the staff of the SEC,  or an opinion of counsel,
in form and substance  satisfactory to Issuer, to the effect that such legend is
not required  for  purposes of the  Securities  Act;  (ii) the  reference to the
provisions of this Agreement in the above legend shall be removed by delivery of
substitute  assignments  without  such  reference if the Option has been sold or
transferred  in  compliance  with the  provisions  of this  Agreement  and under
circumstances that do not require the retention of such reference; and (iii) the
legend  shall be removed in its  entirety  if the  conditions  in the  preceding
clauses (i) and (ii) are both satisfied.  In addition,  such  assignments  shall
bear any other legend as may be required by law.

         SECTION 12. Application for Regulatory Approval. If Grantee is entitled
to exercise the Option and has sent a notice to Issuer pursuant to Section 2(e),
each of Grantee and Issuer will use its  reasonable  efforts to make all filings
with, and to obtain consents of, all third parties and the Federal Reserve Board
and  other  Governmental  Authorities  necessary  to  the  consummation  of  the
transactions  contemplated by this  Agreement,  including,  without  limitation,
making  application for listing or quotation,  as the case may be, of the shares
of Common Stock  issuable  hereunder on the NASDAQ  National  Market  System and
applying to the  Federal  Reserve  Board under the BHC Act and to state  banking
authorities for approval to acquire the shares issuable hereunder.

         SECTION 13. Specific  Performance.  The parties hereto acknowledge that
damages would be an inadequate  remedy for a breach of this  Agreement by either
party hereto and that the obligations of the parties shall hereto be enforceable
by either  party hereto  through  injunctive  or other  equitable  relief.  Both
parties  further agree to waive any  requirement  for the securing or posting of
any bond in connection with the obtaining of any such equitable  relief and that
this provision is without  prejudice to any other rights that the parties hereto
may have for any failure to perform this Agreement.

         SECTION  14.  Separability  of  Provisions.  If  any  term,  provision,
covenant or  restriction  contained  in this  Agreement  is held by a court or a
federal or state regulatory agency of competent jurisdiction to be invalid, void
or  unenforceable,  the  remainder of the terms,  provisions  and  covenants and
restrictions  contained in this Agreement shall remain in full force and effect,
and shall in no way be affected, impaired or invalidated. If for any reason such
court or regulatory  agency determines that Grantee is not permitted to acquire,
or Issuer is not permitted to repurchase, pursuant to Section 7, the full number
of shares of Common Stock provided in Section 1 (as adjusted  pursuant  hereto),
it is the express  intention of Issuer to allow Grantee to acquire or to require
Issuer to repurchase such lesser number of shares as may be permissible, without
any amendment or modification hereof.

         SECTION 15. Notices. All notices,  requests,  claims, demands and other
communications  hereunder shall be deemed to have been duly given when delivered
in person, by cable, telegram,  telecopy or telex, or by registered or certified
mail (postage prepaid,  return receipt requested) at the respective addresses of
the parties set forth in the Merger Agreement.

         SECTION 16.  Governing  Law.  This  Agreement  shall be governed by and
construed in accordance with the laws of the State of New Jersey.

         SECTION 17. Counterparts. This Agreement may be executed in two or more
counterparts,  each of which shall be deemed to be an original, but all of which
shall constitute one and the same agreement.


                                      -10-

<PAGE>



         SECTION 18. Expenses.  Except as otherwise  expressly  provided herein,
each of the parties hereto shall bear and pay all costs and expenses incurred by
it or on its behalf in connection with the transactions  contemplated hereunder,
including  fees  and  expenses  of its  own  financial  consultants,  investment
bankers, accountants and counsel.

         SECTION 19. Entire Agreement; No Third-Party  Beneficiaries.  Except as
otherwise  expressly provided herein or in the Merger Agreement,  this Agreement
contains  the  entire  agreement   between  the  parties  with  respect  to  the
transactions  contemplated  hereunder and supersedes all prior  arrangements  or
understandings  with respect thereof,  written or oral. The terms and conditions
of this Agreement  shall inure to the benefit of and be binding upon the parties
hereto and their respective  successors and permitted  assigns.  Nothing in this
Agreement,  expressed  or implied,  is intended to confer upon any party,  other
than the parties  hereto,  and their  respective  successors  and  assigns,  any
rights,  remedies,  obligations  or  liabilities  under  or by  reason  of  this
Agreement, except as expressly provided herein.

         SECTION 20. Merger Agreement. Nothing contained in this Agreement shall
be deemed to authorize  Issuer or Grantee to breach any  provision of the Merger
Agreement.

         SECTION 21.  Majority in Interest.  In the event that any  selection or
determination is to be made by Grantee or the Owner hereunder and at the time of
such selection or  determination  there is more than one Grantee or Owner,  such
selection shall be made by a majority in interest of such Grantees or Owners.

         SECTION 22.  Further  Assurances.  In the event of any  exercise of the
Option by Grantee,  Issuer and such Grantee  shall execute and deliver all other
documents  and  instruments  and take all other  action  that may be  reasonably
necessary in order to consummate the transactions provided for by such exercise.

         SECTION  23. No Rights as  Shareholder.  Except to the  extent  Grantee
exercises the Option,  Grantee shall have no rights to vote or receive dividends
or have any other rights as a shareholder with respect to shares of Common Stock
covered hereby.

         SECTION 24. Grantee Representation. The Option and any Option Shares or
other securities  acquired by Grantee upon exercise of the Option are not being,
and  will  not be,  as the  case  may  be,  acquired  with a view to the  public
distribution  thereof in the United  States except as provided for in Sections 6
and 11 hereof and neither the Option nor any Option  Shares or other  securities
acquired by Grantee upon exercise of the Option will be transferred or otherwise
disposed  of by  Grantee  except in a  transaction  registered  or  exempt  from
registration under the Securities Act.





                                      -11-

<PAGE>


         IN WITNESS  WHEREOF,  each of the parties has caused this Stock  Option
Agreement  to be  executed  on its  behalf  by  their  officers  thereunto  duly
authorized, all as of the date first above written.

                                    Summit Bancorp.

                                    By       /s/ John G. Collins
                                             John G. Collins
                                             Vice Chairman

                                    NMBT CORP

                                    By       /s/ Michael D. Carrigan
                                             Michael D. Carrigan
                                             President & Chief Executive Officer





                                      -12-



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