PEOPLES HERITAGE FINANCIAL GROUP INC
SC 13E4, 1996-09-10
STATE COMMERCIAL BANKS
Previous: HIGH YIELD PLUS FUND INC, DEF 14A, 1996-09-10
Next: LORD ABBETT GLOBAL FUND INC, N-30D, 1996-09-10



<PAGE>   1
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                 SCHEDULE 13E-4
 
                         Issuer Tender Offer Statement
     (Pursuant to Section 13(e)(1) of the Securities Exchange Act of 1934)
 
                     Peoples Heritage Financial Group, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)
 
                     Peoples Heritage Financial Group, Inc.
- --------------------------------------------------------------------------------
                      (Name of Person(s) Filing Statement)
 
                     Common Stock, $.01 par value per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)
 
                                  711147 10 8
- --------------------------------------------------------------------------------
                     (CUSIP Number of Class of Securities)
 
                                William J. Ryan
                Chairman, President and Chief Executive Officer
                     Peoples Heritage Financial Group, Inc.
                                 P.O. Box 9540
                              One Portland Square
                           Portland, Maine 04112-9540
 
                                With a Copy to:
 
                            Gerard L. Hawkins, Esq.
                     Elias, Matz, Tiernan & Herrick L.L.P.
                             734 15th Street, N.W.
                             Washington, D.C. 20005
                                 (202) 347-0300
- --------------------------------------------------------------------------------
      (Name, Address and Telephone Number of Person Authorized to Receive
    Notices and Communications on Behalf of the Person(s) Filing Statement)
 
                               September 10, 1996
- --------------------------------------------------------------------------------
     (Date Tender Offer First Published, Sent or Given to Security Holders)
 
                           CALCULATION OF FILING FEE
 
<TABLE>
            <S>                                            <C>
            Transaction Valuation                          Amount of Filing Fee
                 $60,000,000*                                    $12,000

<FN> 
- ---------------
* For purposes of calculating the fee only. Based on the offer for 2,500,000
  shares of Common Stock at the maximum tender offer price of $24.00 per share.

</TABLE>
 
/ / Check box if any part of the fee is offset as provided by Rule
    240.0-11(a)(2) and identify the filing with which the offsetting fee was
    previously paid. Identify the previous filing by registration statement
    number, or the Form or Schedule and the date of its filing.
 
Amount Previously Paid:                          Filing Party:
                       ------------------------               ----------------- 
Form of Registration No.:                        Date Filed:
                         ----------------------             -------------------

<PAGE>   2
 
     This Issuer Tender Offer Statement on Schedule 13E-4 (the "Statement")
relates to an offer by Peoples Heritage Financial Group, Inc. (the "Company"), a
Maine corporation, pursuant to Rule 13e-4, to purchase up to 2,500,000 shares of
its common stock, par value $.01 per share (together with the associated
Preferred Stock Purchase Rights, the "Common Stock" or the "Shares"), at prices
not greater than $24.00 nor less than $21.00 per Share upon the terms and
conditions set forth in the Offer to Purchase and related Letter of Transmittal
(which together constitute the "Offer"), copies of which are attached hereto as
Exhibits 9(a)(1) and 9(a)(2), respectively.
 
ITEM 1.  SECURITY AND ISSUER
 
     (a) The name of the issuer is Peoples Heritage Financial Group, Inc. The
principal executive offices of the Company are located at One Portland Square,
Portland, Maine 04112-9540.
 
     (b) The class of securities to which this Statement relates is the Shares.
Reference is made to the Cover Page of the Offer to Purchase and the sections
entitled "Introduction," "The Offer -- Number of Shares; Proration" and "The
Offer -- Interests of Directors and Executive Officers; Transactions and
Arrangements Concerning the Shares" in the Offer to Purchase, which are
incorporated herein by reference.
 
     (c) Reference is made to the section entitled "The Offer -- Price Range of
the Shares; Dividends" in the Offer to Purchase, which is incorporated herein by
reference.
 
     (d) Not applicable. This Statement is being filed by the issuer.
 
ITEM 2.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
 
     (a) Reference is made to the section entitled "The Offer -- Source and
Amount of Funds" in the Offer to Purchase, which is incorporated herein by
reference.
 
     (b) Not applicable.
 
ITEM 3. PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE ISSUER OR
AFFILIATE
 
     (a) Reference is made to the Cover Page of the Offer to Purchase and the
sections entitled "Introduction," "The Offer -- Background of and Purpose of the
Offer; Recommendation of the Board of Directors of the Company," "The
Merger -- General" and "The Merger -- Reasons of the Company for the Merger" in
the Offer to Purchase, which are incorporated herein by reference.
 
     (b) Reference is made to the Cover Page of the Offer to Purchase and the
sections entitled "Introduction," "The Offer -- Background of and Purpose of the
Offer; Recommendation of the Board of Directors of the Company," "The
Merger -- General" and "The Merger -- Reasons of the Company for the Merger" in
the Offer to Purchase, which are incorporated herein by reference.
 
     (c) Not applicable.
 
     (d) Reference is made to the section entitled "The Merger -- Interests of
Certain Persons in the Merger" in the Offer to Purchase, which is incorporated
herein by reference.
 
     (e) Reference is made to the sections entitled "Introduction," "The
Merger -- General" and "Pro Forma Combined Consolidated Financial Information"
in the Offer to Purchase, which are incorporated herein by reference.
 
     (f) Reference is made to the sections entitled "Introduction," "The
Company" and "The Merger -- General" in the Offer to Purchase, which are
incorporated herein by reference.
 
     (g) Not applicable.
 
     (h) Not applicable.
 
     (i) Not applicable.
 
     (j) Not applicable.
 
                                        2
<PAGE>   3
 
ITEM 4.  INTEREST IN SECURITIES OF THE ISSUER
 
     Reference is made to the section entitled "The Offer -- Interests of
Directors and Executive Officers; Transactions and Arrangements Concerning the
Shares" in the Offer to Purchase, which is incorporated herein by reference.
 
ITEM 5.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
         TO THE ISSUER'S SECURITIES
 
     Reference is made to the sections entitled "Introduction," "The
Offer -- Interest of Directors and Executive Officers; Transactions and
Arrangements Concerning the Shares" and "The Merger -- Interests of Certain
Persons in the Merger" in the Offer to Purchase, which are incorporated herein
by reference.
 
ITEM 6.  PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED
 
     Reference is made to the sections entitled "Introduction" and "The
Offer -- Fees and Expenses" in the Offer to Purchase, which are incorporated
herein by reference.
 
ITEM 7.  FINANCIAL INFORMATION
 
     (a) Reference is made to the section entitled "Selected Consolidated
Financial Information of the Company" in the Offer to Purchase, which is
incorporated herein by reference.
 
     (b) Reference is made to the section entitled "Pro Forma Combined
Consolidated Financial Information" in the Offer to Purchase, which is
incorporated herein by reference.
 
ITEM 8.  ADDITIONAL INFORMATION
 
     (a) Reference is made to the sections entitled "The Offer -- Interests of
Directors and Executive Officers; Transactions and Arrangements Concerning the
Shares" and "The Merger -- Interests of Certain Persons in the Merger" in the
Offer to Purchase, which are incorporated herein by reference.
 
     (b) Reference is made to the sections entitled "The Offer -- Certain Legal
Matters; Regulatory Approvals" and "Miscellaneous" in the Offer to Purchase,
which are incorporated herein by reference.
 
     (c) Reference is made to the section entitled "The Offer -- Certain Effects
of the Offer on the Shares; Registration Under the Exchange Act" in the Offer to
Purchase, which is incorporated herein by reference.
 
     (d) Not applicable
 
     (e) Reference is made to the Offer to Purchase and the related Letter of
Transmittal, copies of which are attached hereto as Exhibits 9(a)(2),
respectively, and each of which is incorporated herein by reference in its
entirety.
 
ITEM 9.  MATERIAL TO BE FILED AS EXHIBITS
 
     (a)(1) Offer to Purchase.
 
     (a)(2) Letter of Transmittal.
 
     (a)(3) Notice of Guaranteed Delivery.
 
     (a)(4) Letter from the Company to brokers, dealers, commercial banks, trust
companies and other nominees.
 
     (a)(5) Letter to brokers' clients for use in obtaining instructions from
beneficial owners of shares of Common Stock.
 
     (a)(6) Guidelines for Certification of Taxpayer Identification Number on
Substitute Form W-9.
 
                                        3
<PAGE>   4
 
     (a)(7) Letter to stockholders from the Chairman, President and Chief
Executive Officer of the Company, which is to accompany the Offer to Purchase
and Letter of Transmittal.
 
     (a)(8) Letters to Participants in the Peoples Heritage Financial Group,
Inc. Thrift Incentive Plan and Profit Sharing Employee Stock Ownership Plan and
accompanying Direction Forms.
 
     (a)(9) Press release issued by the Company on September 10, 1996.
 
     (a)(10) Summary advertisement dated September 11, 1996.
 
     (b) Not applicable.
 
     (c)(1) Not applicable.
 
     (c)(2) Agreement and Plan of Merger, dated as of May 30, 1996, among the
Company, Peoples Heritage Merger Corp. and Family Bancorp.*
 
     (c)(3) Stock Option Agreement, dated as of May 30, 1996, between the
Company (as grantee) and Family Bancorp (as issuer).*
 
     (c)(4) Stock Option Agreement, dated as of May 30, 1996, between the
Company (as issuer) and Family Bancorp (as grantee).*
 
     (d) Not applicable.
 
     (e) Not applicable.
 
     (f) Not applicable.
 

- ---------------
* Incorporated by reference to the Current Report on Form 8-K filed by the
  Company with the SEC on June 5, 1996.
 
                                        4
<PAGE>   5
 
                                   SIGNATURE
 
     After due inquiry and to the best of my knowledge and belief, the
undersigned hereby certifies that the information set forth in this statement is
true, complete and correct.
 
                                        PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                                        By: /s/  WILLIAM J. RYAN
                                           -------------------------------------
                                           William J. Ryan
                                           Chairman, President and
                                           Chief Executive Officer
 
Date: September 10, 1996
 
                                        5

<PAGE>   1
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                           OFFER TO PURCHASE FOR CASH
                   UP TO 2,500,000 SHARES OF ITS COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
                      AT A PURCHASE PRICE NOT GREATER THAN
                     $24.00 NOR LESS THAN $21.00 PER SHARE
 
    THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS EXPIRE AT 5:00 P.M., NEW
    YORK CITY TIME, ON MONDAY, OCTOBER 7, 1996, UNLESS THE OFFER IS EXTENDED.
 
     Peoples Heritage Financial Group, Inc. (the "Company"), a Maine
corporation, hereby invites its shareholders to tender shares of its common
stock, par value $0.01 per share (together with the associated Rights, as herein
defined, the "Shares" or the "Common Stock") to the Company at prices, net to
the seller in cash, not greater than $24.00 nor less than $21.00 per Share,
specified by such shareholders, upon the terms and subject to the conditions set
forth in this Offer to Purchase and in the related Letter of Transmittal (which
together constitute the "Offer"). The Company will determine a single per Share
price (not greater than $24.00 nor less than $21.00 per Share) (the "Purchase
Price") that it will pay for Shares validly tendered pursuant to the Offer,
taking into account the number of Shares so tendered and the prices specified by
tendering shareholders. The Company will select the Purchase Price that will
allow it to buy 2,500,000 Shares (or such lesser number of Shares as are validly
tendered at prices not greater than $24.00 nor less than $21.00 per Share)
pursuant to the Offer. All Shares validly tendered at prices at or below the
Purchase Price and not withdrawn will be purchased at the Purchase Price, net to
the seller in cash, upon the terms and subject to the conditions of the Offer,
including the proration terms hereof.
 
     THE OFFER IS NOT CONDITIONED ON ANY MINIMUM NUMBER OF SHARES BEING TENDERED
OR CONSUMMATION OF THE MERGER REFERRED TO BELOW, BUT IS SUBJECT TO CERTAIN OTHER
CONDITIONS. See "The Offer -- Certain Conditions of the Offer."
 
     The Offer is being conducted by the Company in connection with its proposed
acquisition of Family Bancorp ("Family"), a Massachusetts corporation, pursuant
to an Agreement and Plan of Merger, dated as of May 30, 1996, by and among the
Company, Peoples Heritage Merger Corp. ("Merger Corp."), a newly-formed,
wholly-owned subsidiary of the Company, and Family (the "Agreement"). The
Agreement provides, among other things, for (i) the merger of Family with and
into Merger Corp. (the "Merger") and (ii) the conversion of each share of common
stock, par value $0.10 per share, of Family (the "Family Common Stock")
outstanding immediately prior to the Merger (other than any dissenting shares
under Massachusetts law and certain shares held by the Company) into the right
to receive 1.26 shares of Common Stock (the "Exchange Ratio"), subject to
possible adjustment under certain circumstances, plus cash in lieu of any
fractional share interest. Based on 4,259,336 shares of Family Common Stock
outstanding as of August 31, 1996 and outstanding options to purchase 162,887 of
such shares as of the same date, a maximum of 5,572,001 shares of Common Stock
will be issuable upon consummation of the Merger. The shares of Common Stock to
be issued to shareholders of Family pursuant to the Agreement are not eligible
to be tendered in the Offer. The Offer is being conducted in advance of
consummation of the Merger, and neither the Offer nor the Merger is conditioned
upon consummation of the other.
 
     THE BOARD OF DIRECTORS OF THE COMPANY HAS UNANIMOUSLY APPROVED THE OFFER.
HOWEVER, NEITHER THE COMPANY NOR ITS BOARD OF DIRECTORS MAKES ANY RECOMMENDATION
TO ANY SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING SHARES.
SHAREHOLDERS MUST MAKE THEIR OWN DECISIONS WHETHER TO TENDER SHARES AND, IF SO,
HOW MANY SHARES TO TENDER AND THE PRICE OR PRICES AT WHICH SHARES SHOULD BE
TENDERED.
                            ------------------------
 
                      The Dealer Manager for the Offer is:
 
                         KEEFE, BRUYETTE & WOODS, INC.
                            ------------------------
 
            THE DATE OF THIS OFFER TO PURCHASE IS SEPTEMBER 10, 1996
<PAGE>   2
 
                                   IMPORTANT
 
     Any shareholder desiring to tender all or any portion of his or her Shares
should either (1) complete and sign the Letter of Transmittal or a facsimile
copy thereof in accordance with the instructions in the Letter of Transmittal,
mail or deliver it and any other required documents to American Stock Transfer
and Trust Company (the "Depositary"), and either mail or deliver his or her
stock certificates for such Shares to the Depositary or follow the procedure for
book-entry delivery set forth under "The Offer -- Procedure for Tendering
Shares -- Book-Entry Delivery," or (2) request his broker, dealer, commercial
bank, trust company or other nominee to effect the transaction for him or her. A
shareholder having Shares registered in the name of a broker, dealer, commercial
bank, trust company or other nominee must contact that broker, dealer,
commercial bank, trust company or other nominee if such shareholder desires to
tender such Shares. Shareholders who desire to tender Shares and whose
certificates for such Shares are not immediately available or who cannot comply
with the procedure for book-entry transfer by the expiration of the Offer must
tender such Shares by following the procedures for guaranteed delivery set forth
under "The Offer -- Procedure for Tendering Shares -- Guaranteed Delivery."
SHAREHOLDERS MUST PROPERLY COMPLETE THE LETTER OF TRANSMITTAL, INCLUDING THE
SECTION OF THE LETTER OF TRANSMITTAL, RELATING TO THE PRICE AT WHICH THEY ARE
TENDERING SHARES, IN ORDER TO EFFECT A VALID TENDER OF THEIR SHARES.
 
     Questions and requests for assistance or for additional copies of this
Offer to Purchase, the Letter of Transmittal or the Notice of Guaranteed
Delivery may be directed to the Information Agent or the Dealer Manager at their
respective addresses and telephone numbers set forth on the back cover of this
Offer to Purchase.
 
     NO PERSON HAS BEEN AUTHORIZED TO MAKE ANY RECOMMENDATION ON BEHALF OF THE
COMPANY AS TO WHETHER SHAREHOLDERS SHOULD TENDER OR REFRAIN FROM TENDERING
SHARES PURSUANT TO THE OFFER. NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY
INFORMATION OR TO MAKE ANY REPRESENTATIONS IN CONNECTION WITH THE OFFER OTHER
THAN THOSE CONTAINED IN THIS OFFER TO PURCHASE OR IN THE LETTER OF TRANSMITTAL.
IF GIVEN OR MADE, SUCH RECOMMENDATION, INFORMATION OR REPRESENTATIONS MUST NOT
BE RELIED UPON AS HAVING BEEN AUTHORIZED BY THE COMPANY.
<PAGE>   3

<TABLE>
 
                               TABLE OF CONTENTS
 
<CAPTION>
                                                                                        PAGE
                                                                                        ----
<S>                                                                                     <C>
Introduction..........................................................................    1
The Offer.............................................................................    3
  Number of Shares; Proration.........................................................    3
  Tenders by Owners of Fewer Than 100 Shares..........................................    4
  Procedure for Tendering Shares......................................................    5
     Proper Tender of Shares..........................................................    5
     Signature Guarantees and Method of Delivery......................................    5
     Federal Income Tax Backup Withholding............................................    5
     Book-Entry Delivery..............................................................    6
     Guaranteed Delivery..............................................................    6
     Determination of Validity; Rejection of Shares; Waiver of Defects; No Obligation
      to Give Notice of Defects.......................................................    6
     Profit Sharing Employee Stock Ownership Plan and Thrift Incentive Plan...........    7
     Dividend Reinvestment Plan.......................................................    7
     Rule 14e-4.......................................................................    7
  Withdrawal Rights...................................................................    7
  Purchase of Shares; Payment of Purchase Price.......................................    8
  Certain Conditions of the Offer.....................................................    9
  Extension of the Offer; Termination; Amendment......................................   10
  Price Range of the Shares; Dividends................................................   11
  Source and Amount of Funds..........................................................   12
  Background of and Purpose of the Offer; Recommendation of the Board of Directors of
     the Company......................................................................   12
  Interests of Directors and Executive Officers; Transactions and Arrangements
     Concerning the Shares............................................................   13
  Certain Effects of the Offer on the Shares; Registration Under the Exchange Act.....   14
  Certain Legal Matters; Regulatory Approvals.........................................   14
  Certain Federal Income Tax Consequences.............................................   15
  Fees and Expenses...................................................................   17
The Merger............................................................................   18
  General.............................................................................   18
  Background of the Merger............................................................   18
  Reasons of the Company for the Merger...............................................   20
  Assumption of Family Stock Options..................................................   21
  Representations and Warranties......................................................   21
  Conditions to the Merger............................................................   21
  Regulatory Approvals................................................................   22
  Business Pending the Merger.........................................................   24
  Effective Time of the Merger; Termination and Amendment.............................   24
  Interests of Certain Persons in the Merger..........................................   26
  Certain Employee Matters............................................................   26
  Accounting Treatment of the Merger..................................................   26
  Expenses of the Merger..............................................................   27
  Stock Option Agreements.............................................................   27
  Certain Regulatory Considerations...................................................   27
The Company...........................................................................   29
Family................................................................................   30
Selected Consolidated Financial Data of the Company...................................   31
Pro Forma Combined Consolidated Financial Information.................................   33
Available Information.................................................................   39
Miscellaneous.........................................................................   39
</TABLE>
 
                                        i
<PAGE>   4
 
TO THE HOLDERS OF COMMON STOCK OF
PEOPLES HERITAGE FINANCIAL GROUP, INC.:
 
                                  INTRODUCTION
 
     The Company hereby invites it shareholders to tender Shares to the Company
at prices, net to the seller in cash, not greater than $24.00 nor less than
$21.00 per Share, specified by such shareholders, upon the terms and subject to
the conditions set forth in the Offer. The Company will determine a single per
Share Purchase Price (not greater than $24.00 nor less than $21.00 per Share)
that it will pay for Shares validly tendered pursuant to the Offer taking into
account the number of Shares so tendered and the prices specified by tendering
shareholders. The Company will select the Purchase Price which will allow it to
buy 2,500,000 Shares (or such lesser number of Shares as are validly tendered at
prices not greater than $24.00 nor less than $21.00 per Share) pursuant to the
Offer. All Shares validly tendered at prices at or below the Purchase Price will
be purchased at the Purchase Price, net to the seller in cash, upon the terms
and subject to the conditions of the Offer, including the proration terms
described below.
 
     THE OFFER IS NOT CONDITIONED ON ANY MINIMUM NUMBER OF SHARES BEING TENDERED
OR CONSUMMATION OF THE MERGER, BUT IS SUBJECT TO CERTAIN OTHER CONDITIONS. See
"The Offer -- Certain Conditions of the Offer."
 
     If, before the Expiration Date (as defined under "The Offer -- Number of
Shares; Proration") more than 2,500,000 Shares (or such greater number of Shares
as the Company may elect to purchase) are validly tendered at or below the
Purchase Price, the Company will accept Shares for purchase on a pro rata basis
from all shareholders who validly tender Shares at or below the Purchase Price.
See "The Offer -- Number of Shares; Proration." The Company will return all
Shares not purchased under the Offer, including Shares tendered and not
withdrawn at prices greater than the Purchase Price and Shares not purchased
because of proration. Tendering shareholders will not be obligated to pay
brokerage fees or commissions, solicitation fees or, subject to Instruction 7 of
the Letter of Transmittal, stock transfer taxes on the Company's purchase of
Shares pursuant to the Offer. In addition, the Company will pay all fees and
expenses of Keefe, Bruyette & Woods, Inc. (the "Dealer Manager"), American Stock
Transfer and Trust Company (the "Depositary") and Morrow & Co., Inc. (the
"Information Agent") in connection with the Offer.
 
     THE BOARD OF DIRECTORS OF THE COMPANY HAS UNANIMOUSLY APPROVED THE OFFER.
HOWEVER, NEITHER THE COMPANY NOR ITS BOARD OF DIRECTORS MAKES ANY RECOMMENDATION
TO ANY SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING SHARES.
SHAREHOLDERS MUST MAKE THEIR OWN DECISIONS WHETHER TO TENDER SHARES AND, IF SO,
HOW MANY SHARES TO TENDER AND THE PRICE OR PRICES AT WHICH SHARES SHOULD BE
TENDERED.
 
     The Offer is being conducted by the Company in connection with its proposed
acquisition of Family pursuant to the Agreement, which provides, among other
things, for (i) the merger of Family with and into Merger Corp. and (ii) the
conversion of each share of Family Common Stock outstanding immediately prior to
the Merger (other than any dissenting shares under Massachusetts law and certain
shares held by the Company) into the right to receive 1.26 shares of Common
Stock, subject to possible adjustment under certain circumstances, plus cash in
lieu of any fractional share interest. Based on 4,259,336 shares of Family
Common Stock outstanding as of August 31, 1996 and outstanding options to
purchase 162,887 of such shares as of the same date, a maximum of 5,572,001
shares of Common Stock will be issuable upon consummation of the Merger. The
shares of Common Stock to be issued to shareholders of Family pursuant to the
Agreement are not eligible to be tendered in the Offer. The Offer is being
conducted in advance of the Effective Time of the Merger (as defined under "The
Merger -- Effective Time of the Merger; Termination and Amendment"), and neither
the Offer nor the Merger is conditioned upon consummation of the other. For a
description of the conditions to the Offer and the Merger, see "The
Offer -- Certain Conditions of the Offer" and "The Merger -- Conditions to the
Merger," respectively.
 
     The Offer will enable shareholders to sell a portion of their Shares while
retaining a continuing equity interest in the Company if they so desire. The
Offer will increase the Company's leverage, with an attendant
<PAGE>   5
 
increase in the risks and rewards for shareholders who retain a continuing
equity interest in the Company. In addition, shareholders who determine not to
accept the Offer will realize a proportionate increase in their relative equity
interest in the Company, and thus in the Company's future earnings and assets,
subject to increased risks and rewards resulting from higher leverage and to the
Company's ability to issue additional Shares or other equity securities in the
future.
 
     The Offer may provide shareholders who are considering a sale of all or a
portion of their Shares the opportunity to determine the price or prices (not
greater than $24.00 nor less than $21.00 per Share) at which they are willing to
sell their Shares and, if any such Shares are purchased pursuant to the Offer,
to sell those Shares for cash without the usual transaction costs associated
with open-market sales. The Offer also may give shareholders the opportunity to
sell Shares at prices greater than market prices prevailing prior to
announcement of the Offer.
 
     As of August 31, 1996, there were 25,198,791 Shares outstanding and
1,368,195 Shares issuable upon exercise of outstanding stock options under the
Company's stock option plans. The 2,500,000 Shares that the Company is offering
to purchase represent approximately 9.9% of the Shares outstanding as of August
31, 1996 and approximately 8.1% of the sum of such number of shares and the
maximum number of shares of Common Stock to be issued pursuant to the Agreement
upon consummation of the Merger.
 
     The Company plans to obtain the funds needed for the Offer from cash and
securities on hand of approximately $60.3 million. See "The Offer -- Source and
Amount of Funds."
 
                                        2
<PAGE>   6
 
                                   THE OFFER
 
NUMBER OF SHARES; PRORATION
 
     Upon the terms and subject to the conditions of the Offer, the Company will
accept for payment and purchase 2,500,000 Shares, or such lesser number of
Shares as are validly tendered on or prior to the Expiration Date, at a price
(determined in the manner set forth below) not greater than $24.00 nor less than
$21.00 per Share. The term "Expiration Date" means 5:00 p.m., New York City
time, on Monday, October 7, 1996, unless the Company, in its sole discretion,
shall have extended the period of time during which the Offer is open, in which
event the term "Expiration Date" shall refer to the latest time and date at
which the Offer, as so extended by the Company, shall expire. See "The
Offer -- Extension of the Offer; Termination; Amendment" for a description of
the Company's right to extend the time during which the Offer is open and to
delay, terminate or amend the Offer. If the Offer is oversubscribed, Shares
tendered at or below the Purchase Price prior to the Expiration Date will be
subject to proration. The proration period also expires on the Expiration Date.
 
     The Company will, upon the terms and subject to the conditions of the
Offer, determine the Purchase Price (not greater than $24.00 nor less than
$21.00 per Share) that it will pay for Shares validly tendered pursuant to the
Offer taking into account the number of Shares so tendered and the prices
specified by tendering shareholders. The Company will select a single per Share
Purchase Price that will allow it to buy 2,500,000 Shares (or such lesser number
as are validly tendered at prices not greater than $24.00 nor less than $21.00
per Share) pursuant to the Offer. The Company reserves the right, in its sole
discretion, to purchase more than 2,500,000 Shares pursuant to the Offer.
 
     If (i) the Company increases or decreases the price to be paid for Shares,
increases the number of Shares being sought and any such increase in the number
of Shares being sought exceeds 2% of the outstanding Shares, or decreases the
number of Shares being sought, and (ii) the Offer is scheduled to expire less
than ten business days from and including the date that notice of such increase
or decrease is first published, sent or given in the manner specified under "The
Offer -- Extension of the Offer; Termination; Amendment," the Offer will be
extended for ten business days from and including the date of such notice. For
purposes of the Offer, a "business day" means any day other than a Saturday,
Sunday or federal holiday and consists of the time period from 12:01 a.m.
through 12:00 midnight, New York City time.
 
     In accordance with Instruction 5 of the Letter of Transmittal, each
shareholder desiring to tender Shares must specify the price or prices (not
greater than $24.00 nor less than $21.00 per Share) at which such shareholder is
willing to have the Company purchase his or her Shares. All Shares purchased
pursuant to the Offer will be purchased at the Purchase Price. All Shares not
purchased pursuant to the Offer, including Shares tendered at prices greater
than the Purchase Price and Shares not purchased because of proration, will be
returned to the tendering shareholders at the Company's expense as promptly as
practicable following the Expiration Date.
 
     If the number of Shares validly tendered prior to the Expiration Date at or
below the Purchase Price is less than or equal to 2,500,000 Shares (or such
greater number of Shares as the Company may elect to purchase pursuant to the
Offer), the Company will, upon the terms and subject to the conditions of the
Offer, purchase at the Purchase Price all Shares so tendered.
 
     Upon the terms and subject to the conditions of the Offer, in the event
that prior to the Expiration Date more than 2,500,000 Shares (or such greater
number of Shares as the Company elects to purchase) are validly tendered at or
below the Purchase Price, the Company will accept Shares for purchase in the
following order of priority:
 
          (a) first, all Shares validly tendered at or below the Purchase Price
     prior to the Expiration Date by any Odd Lot Owner (as defined under "The
     Offer -- Tenders by Owners of Fewer Than 100 Shares") who:
 
             (1) tenders all Shares beneficially owned by such Odd Lot Owner at
        or below the Purchase Price (partial tenders will not qualify for this
        preference); and
 
                                        3
<PAGE>   7
 
             (2) completes the box captioned "Odd Lots" on the Letter of
        Transmittal and, if applicable, on the Notice of Guaranteed Delivery;
        and
 
          (b) then, after the purchase of all of the foregoing Shares, all other
     Shares validly tendered at or below the Purchase Price before the
     Expiration Date on a pro rata basis, if necessary.
 
Proration for each shareholder tendering Shares will be based on the ratio of
the number of Shares tendered by such shareholder to the total number of Shares
tendered by all shareholders. In any proration, appropriate adjustments will be
made to avoid the exchange of fractions of shares of Common Stock and if a
shareholder is entitled to have a portion of a share of tendered Common Stock
exchanged, an entire share of Common Stock will be exchanged if the fraction is
 .5 or more and no share of Common Stock will be exchanged by virtue of such
fractional share if the fractional interest is less than .5.
 
     In the event that proration of tendered Shares is required, the Company
will determine the final proration factor as promptly as practicable after the
Expiration Date. Although the Company does not expect to be able to announce the
final results of such proration until approximately seven over-the-counter
("OTC") trading days after the Expiration Date, it will announce preliminary
results of proration by press release as promptly as practicable after the
Expiration Date. Shareholders may obtain such preliminary information from the
Information Agent and may be able to obtain such information from their brokers
or financial advisors.
 
     On September 12, 1989, the Company's Board of Directors declared a dividend
distribution of one Preferred Stock Purchase Right ("Right") for each Share
outstanding on September 25, 1989 (the "Record Date"). Shares issued subsequent
to the Record Date automatically receive the Rights. The Rights expire on
September 25, 1999 unless redeemed earlier by the Company. Each Right entitles
the registered holder to purchase from the Company a unit consisting of one
one-hundredth of a share of Series A Junior Participating Preferred Stock of the
Company at an exercise price of $90, subject to adjustment to prevent dilution.
The Rights will not become exercisable or separately tradeable as a result of
the Offer. Absent circumstances causing the Rights to become exercisable or
separately tradeable prior to the Expiration Date, the tender of any Shares
pursuant to the Offer will include the tender of the associated Rights. No
separate consideration will be paid for such Rights. Upon the purchase of Shares
by the Company pursuant to the Offer, the sellers of the Shares so purchased
will no longer own the Rights associated with such Shares.
 
     As described under "The Offer -- Certain Federal Income Tax Consequences,"
the number of Shares that the Company will purchase from a shareholder may
affect the federal income tax consequences to the shareholder of such purchase
and therefore may be relevant to a shareholder's decision whether to tender
Shares.
 
TENDERS BY OWNERS OF FEWER THAN 100 SHARES
 
     The Company, upon the terms and subject to the conditions of the Offer,
will accept for payment, without proration, all Shares validly tendered on or
prior to the Expiration Date at or below the Purchase Price by or on behalf of
shareholders who beneficially held, as of the close of business on September 9,
1996, and continue to own beneficially as of the Expiration Date, an aggregate
of fewer than 100 Shares ("Odd Lot Owners"). To avoid proration, however, an Odd
Lot Owner must validly tender at or below the Purchase Price all Shares that
such Odd Lot Owner beneficially owns; partial tenders will not qualify for this
preference. This preference is not available to holders of 100 or more Shares,
even if such holders have separate stock certificates for fewer than 100 Shares.
Any Odd Lot Owner wishing to tender all Shares beneficially owned by him free of
proration pursuant to this Offer must complete the section captioned "Odd Lots"
in the Letter of Transmittal and, if applicable, on the Notice of Guaranteed
Delivery. By accepting the Offer, a shareholder owning fewer than 100 Shares
would not only avoid the payment of brokerage commissions but would also avoid
any applicable odd lot discounts payable on a sale of Shares in a transaction
effected on a securities exchange.
 
     The special Odd Lot purchase rules described above do not apply to any
Shares held in the Company's Profit Sharing Employee Stock Ownership Plan or its
Thrift Incentive Plan.
 
                                        4
<PAGE>   8
 
PROCEDURE FOR TENDERING SHARES
 
     PROPER TENDER OF SHARES.  For Shares to be validly tendered pursuant to the
Offer:
 
          (a) the certificates for such Shares (or confirmation of receipt of
     such Shares pursuant to the procedures for book-entry transfer set forth
     below), together with a properly completed and duly executed Letter of
     Transmittal (or facsimile thereof) with any required signature guarantees,
     and any other documents required by the Letter of Transmittal, must be
     received on or before the Expiration Date by the Depositary at one of its
     addresses set forth on the back cover of this Offer to Purchase; or
 
          (b) the tendering shareholder must comply with the guaranteed delivery
     procedure set forth below.
 
     As specified in Instruction 5 of the Letter of Transmittal, each
shareholder desiring to tender Shares pursuant to the Offer must properly
indicate in the section captioned "price (In Dollars) Per Share At Which Shares
Are Being Tendered" on the Letter of Transmittal or facsimile thereof the price
(in multiples of $.25) at which his or her Shares are being tendered; provided,
however, that a shareholder may check the box in that section indicating that he
or she is tendering all of his or her Shares at the Purchase Price. Shareholders
desiring to tender Shares at more than one price must complete separate Letters
of Transmittal for each price at which Shares are being tendered, except that
the same Shares cannot be tendered (unless properly withdrawn previously in
accordance with the terms of the Offer) at more than one price. In order to
validly tender Shares, one and only one price box must be checked in the
appropriate section on each Letter of Transmittal.
 
     SIGNATURE GUARANTEES AND METHOD OF DELIVERY.  No signature guarantee is
required on the Letter of Transmittal (i) if the Letter of Transmittal is signed
by the registered holder of the Shares exactly as the name of the registered
holder appears on the certificate (which term, for purposes hereof, includes any
participant in The Depository Trust Company or the Philadelphia Depository Trust
Company (collectively, the "Book-Entry Transfer Facilities") whose name appears
on a security position listing as the holder of the Shares) tendered therewith,
and payment and delivery are to be made directly to such registered holder, or
(ii) if Shares are tendered for the account of a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc. or a commercial bank, trust company, savings association or credit
union having an office, branch or agency in the United States (each such entity,
an "Eligible Institution"). In all other cases, all signatures on the Letter of
Transmittal must be Medallion guaranteed by an Eligible Institution. See
Instruction 1 of the Letter of Transmittal. If a certificate representing Shares
is registered in the name of a person other than the signer of a Letter of
Transmittal, or if payment is to be made, or Shares not purchased or tendered
are to be issued, to a person other than the registered holder, the certificate
must be endorsed or accompanied by an appropriate stock power, in either case
signed exactly as the name of the registered holder appears on the certificate,
with the signature on the certificate or stock power Medallion guaranteed by an
Eligible Institution. In all cases, payment for Shares tendered and accepted for
payment pursuant to the Offer will be made only after timely receipt by the
Depositary of certificates for such Shares (or a timely confirmation of a
book-entry transfer of such Shares into the Depositary's account at one of the
Book-Entry Transfer Facilities), a properly completed and duly executed Letter
of Transmittal (or facsimile thereof) with any required signature guarantees and
any other documents required by the Letter of Transmittal. THE METHOD OF
DELIVERY OF ALL DOCUMENTS, INCLUDING STOCK CERTIFICATES, THE LETTER OF
TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS, IS AT THE ELECTION AND RISK OF THE
TENDERING SHAREHOLDER. IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN
RECEIPT REQUESTED, PROPERLY INSURED, IS RECOMMENDED.
 
     FEDERAL INCOME TAX BACKUP WITHHOLDING.  Unless an exemption applies under
the applicable law and regulations concerning "backup withholding" of federal
income tax, the Depositary will be required to withhold, and will withhold, 31%
of the gross proceeds otherwise payable to a shareholder or other payee pursuant
to the Offer unless the shareholder or other payee provides such person's
taxpayer identification number (social security number or employer
identification number) and certifies that such number is correct. If the
Depositary is not provided with the correct taxpayer identification number, the
Internal Revenue Service may subject the shareholder or other payee to a $50
penalty. Each tendering shareholder, other than a
 
                                        5
<PAGE>   9
 
noncorporate foreign shareholder, should complete and sign the main signature
form and the Substitute Form W-9 included as part of the Letter of Transmittal
so as to provide the information and certification necessary to avoid backup
withholding, unless an applicable exemption exists and is proved in a manner
satisfactory to the Company and the Depositary. Noncorporate foreign
shareholders may be required to complete and sign a Form W-8, Certificate of
Foreign Status, a copy of which may be obtained from the Depositary, in order to
avoid backup withholding. In the case of any foreign shareholder, the Depositary
will withhold 30% of the gross proceeds paid to such shareholder in order to
satisfy certain withholding requirements, unless such foreign shareholder proves
in a manner satisfactory to the Company and the Depositary that (i) the sale of
its Shares pursuant to the Offer will qualify as a sale or exchange, rather than
a dividend, for Federal income tax purposes (see "The Offer -- Certain Federal
Income Tax Consequences"), in which case no withholding will be required, (ii)
the foreign shareholder is eligible for a reduced tax treaty rate with respect
to dividend income, in which case the Depositary will withhold at the reduced
treaty rate, or (iii) no withholding is otherwise required.
 
     EACH SHAREHOLDER SHOULD CONSULT HIS OR HER OWN TAX ADVISOR AS TO WHETHER
SUCH SHAREHOLDER IS SUBJECT TO OR EXEMPT FROM FEDERAL INCOME TAX BACKUP
WITHHOLDING.
 
     BOOK-ENTRY DELIVERY.  The Depositary will establish an account with respect
to the Shares at each of the Book-Entry Transfer Facilities for purposes of the
Offer within two business days after the date of this Offer to Purchase. Any
financial institution that is a participant in the Book-Entry Transfer
Facility's system may make book-entry delivery of the Shares by causing such
facility to transfer such Shares into the Depositary's account in accordance
with such facility's procedure for such transfer. Even though delivery of Shares
may be effected through book-entry transfer into the Depositary's account at one
of the Book-Entry Transfer Facilities, a properly completed and duly executed
Letter of Transmittal (or facsimile thereof), with any required signature
guarantees and other required documents must, in any case, be transmitted to and
received by the Depositary at one of its addresses set forth on the back cover
of this Offer to Purchase prior to the Expiration Date, or the guaranteed
delivery procedure set forth below must be followed. DELIVERY OF THE LETTER OF
TRANSMITTAL AND ANY OTHER REQUIRED DOCUMENTS TO ONE OF THE BOOK-ENTRY TRANSFER
FACILITIES DOES NOT CONSTITUTE DELIVERY TO THE DEPOSITARY.
 
     GUARANTEED DELIVERY.  If a shareholder desires to tender Shares pursuant to
the Offer and such shareholder's certificates are not immediately available (or
the procedures for book-entry transfer cannot be completed on a timely basis) or
time will not permit all required documents to reach the Depositary by the
Expiration Date, such Shares may nevertheless be tendered provided that all of
the following conditions are satisfied:
 
          (a) such tender is made by or through an Eligible Institution;
 
          (b) the Depositary receives (by hand, mail, telegram or facsimile
     transmission), on or prior to the Expiration Date, a properly completed and
     duly executed Notice of Guaranteed Delivery substantially in the form the
     Company has provided with this Offer to Purchase (indicating the price at
     which the Shares are being tendered) and includes a guarantee by an
     Eligible Institution in the form set forth in such Notice; and
 
          (c) the certificates for all tendered Shares in proper form for
     transfer (or confirmation of book-entry transfer of such Shares into the
     Depositary's account at one of the Book-Entry Transfer Facilities),
     together with a properly completed and duly executed Letter of Transmittal
     (or facsimile thereof) and any other documents required by the Letter of
     Transmittal, are received by the Depositary within five OTC trading days
     after the date the Depositary receives such Notice of Guaranteed Delivery.
 
     DETERMINATION OF VALIDITY; REJECTION OF SHARES; WAIVER OF DEFECTS; NO
OBLIGATION TO GIVE NOTICE OF DEFECTS.  All questions as to the number of Shares
to be accepted, the price to be paid therefor, the form of documents and the
validity, form eligibility (including the time of receipt) and acceptance for
payment of any tender of Shares will be determined by the Company, in its sole
discretion, which determination shall be final
 
                                        6
<PAGE>   10
 
and binding on all parties. The Company reserves the absolute right to reject
any or all tenders it determines not to be in proper form or the acceptance of
or payment for which may be unlawful. The Company also reserves the absolute
right to waive any of the conditions of the Offer or any defect or irregularity
in the tender of any particular Shares. No tender of Shares will be deemed to be
validly made until all defects and irregularities have been cured or waived.
None of the Company, the Dealer Manager, the Depositary, the Information Agent
or any other person is or will be obligated to give notice of any defects or
irregularities in tenders, and none of them will incur any liability for failure
to give such notice.
 
     PROFIT SHARING EMPLOYEE STOCK OWNERSHIP PLAN AND THRIFT INCENTIVE PLAN.  As
of August 31, 1996, the Company's Profit Sharing Employee Stock Ownership Plan
("ESOP") and Thrift Incentive Plan ("TIP") owned approximately 341,456 Shares
and approximately 251,442 Shares, respectively, all of which were allocated to
the accounts of the respective participants. Shares allocated to participants'
accounts will, subject to the limitations of the Employee Retirement Income
Security Act of 1974, as amended, and applicable regulations thereunder
("ERISA"), be tendered by the trustee of the respective plans according to the
instructions of participants to the applicable trustee. Each trustee will make
available to the respective participants whose accounts hold allocated Shares
all documents furnished to shareholders of the Company in connection with the
Offer generally and will provide additional information in separate letters with
respect to the operations of the Offer to the participants of each of the ESOP
and the TIP. Each such participant also will receive a form upon which the
participant may instruct the trustee regarding the Offer. Each participant may
direct that all, some or none of the Shares allocated to the participants'
account be tendered. Participants also will be afforded withdrawal rights. See
"The Offer -- Withdrawal Rights."
 
     Under ERISA the Company will be prohibited from purchasing any Shares from
either the ESOP or the TIP (including Shares allocated to the accounts of
participants) if the Purchase Price is less than the prevailing market price of
the Shares on the date the Shares are accepted for payment pursuant to the
Offer. If Shares tendered from either the ESOP or the TIP would have been
accepted pursuant to the terms of the Offer except for this prohibition, such
Shares shall automatically be deemed to be withdrawn.
 
     DIVIDEND REINVESTMENT PLAN.  Shareholders who participate in the Company's
Dividend Reinvestment Plan who want to tender Shares held under that plan
pursuant to the Offer should mark the appropriate box on the Letter of
Transmittal and follow the relevant instructions set out there.
 
     RULE 14E-4.  It is a violation of Rule 14e-4 promulgated under the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), for a person
(directly or indirectly) to tender shares for his or her own account unless, at
the time of tender and at the end of the proration period (including any
extension thereof), the person so tendering (i) has a net long position equal to
or greater than the amount of (x) Shares tendered or (y) other securities
immediately convertible into, exercisable or exchangeable for the amount of
Shares tendered and will acquire such Shares for tender by conversion, exercise
or exchange of such other securities and (ii) will cause such Shares to be
delivered in accordance with the terms of the Offer. Rule 14e-4 provides a
similar restriction applicable to the tender or guarantee of a tender on behalf
of another person. The tender of Shares pursuant to any one of the procedures
described above will constitute the tendering shareholder's acceptance of the
terms and conditions of the Offer as well as the tendering shareholder's
representation and warranty that (i) such shareholder has a net long position in
the Shares being tendered within the meaning of Rule 14e-4 and (ii) the tender
of such Shares complies with Rule 14e-4. The Company's acceptance for payment of
Shares tendered pursuant to the Offer will constitute a binding agreement
between the tendering shareholder and the Company upon the terms and subject to
the conditions of the Offer.
 
WITHDRAWAL RIGHTS
 
     Shares tendered pursuant to the Offer may be withdrawn at any time prior to
the Expiration Date and, unless theretofore accepted for payment by the Company,
also may be withdrawn after 12:00 midnight, New York City time, on Tuesday,
November 5, 1996. Once accepted for payment, tenders of Shares made pursuant to
the Offer are irrevocable.
 
     For a withdrawal to be effective, the Depositary must timely receive (at
one of its addresses set forth on the back cover of this Offer to Purchase) a
written, telegraphic or facsimile transmission notice of withdrawal.
 
                                        7
<PAGE>   11
 
Such notice of withdrawal must specify the name of the person who tendered the
Shares to be withdrawn, the number of Shares to be withdrawn and the name of the
registered holder, if different from that of the person who tendered such
Shares. If the certificates have been delivered or otherwise identified to the
Depositary, then, prior to the release of such certificates, the tendering
shareholder must also submit the serial numbers shown on the particular
certificates evidencing the Shares to be withdrawn and the signature on the
notice of withdrawal must be Medallion guaranteed by an Eligible Institution
(except in the case of Shares tendered by an Eligible Institution). If Shares
have been tendered pursuant to the procedure for book-entry transfer described
under "The Offer -- Procedure for Tendering Shares," the notice of withdrawal
must specify the name and the number of the account at the applicable Book-Entry
Transfer Facility to be credited with the withdrawn Shares and otherwise comply
with the procedures of such facility. All questions as to the form and validity
(including time of receipt) of notices of withdrawal will be determined by the
Company, in its sole discretion, which determination shall be final and binding
on all parties. None of the Company, any of its affiliates, the Dealer Manager,
the Depositary, the Information Agent or any other person is or will be
obligated to give notice of any defects or irregularities in any notice of
withdrawal, and none of them will incur any liability for failure to give such
notice. Any Shares properly withdrawn will thereafter be deemed not validly
tendered for purposes of the Offer. Withdrawn Shares may, however, be retendered
by the Expiration Date by again following any of the procedures described under
"The Offer -- Procedure for Tendering Shares."
 
     If the Company extends the Offer, is delayed in its purchase of Shares or
is unable to purchase Shares pursuant to the Offer for any reason, then, without
prejudice to the Company's rights under the Offer, the Depositary may, subject
to applicable law, retain on behalf of the Company all tendered Shares, and the
Shares may not be withdrawn except to the extent tendering shareholders are
entitled to withdrawal rights as described above.
 
PURCHASE OF SHARES; PAYMENT OF PURCHASE PRICE
 
     Upon the terms and subject to the conditions of the Offer, the Company will
determine the Purchase Price it will pay for validly tendered Shares taking into
account the number of Shares tendered and the prices specified by tendering
shareholders and will accept for payment (and thereby purchase) Shares validly
tendered at or below the Purchase Price as soon as practicable after the
Expiration Date. For purposes of the Offer, the Company will be deemed to have
accepted for payment (and therefore purchased), subject to proration, Shares
which are tendered at or below the Purchase Price and not withdrawn when, as and
if it gives oral or written notice to the Depositary of its acceptance of such
Shares for payment pursuant to the Offer.
 
     Upon the terms and subject to the conditions of the Offer, the Company will
purchase and pay a single per Share Purchase Price for 2,500,000 Shares (subject
to increase or decrease as provided under "The Offer -- Number of Shares;
Proration" and "-- Extension of the Offer; Termination; Amendment") or such
lesser number of Shares as are validly tendered at prices not greater than
$24.00 or less than $21.00 per Share, as promptly as practicable after the
Expiration Date.
 
     Payment for Shares purchased pursuant to the Offer will be made by
depositing the aggregate Purchase Price therefor with the Depositary, which will
act as agent for tendering shareholders for the purpose of receiving payment
from the Company and transmitting payment to the tendering shareholders. In the
event of proration, the Company will determine the proration factor and pay for
those tendered Shares accepted for payment as soon as practicable after the
Expiration Date; however, the Company does not expect to be able to announce the
final results of any such proration until approximately seven OTC trading days
after the Expiration Date. Certificates for all Shares not purchased, including
all Shares tendered at prices greater than the Purchase Price and Shares not
purchased due to proration, will be returned (or, in the case of Shares tendered
by book-entry transfer, such Shares will be credited to the account maintained
with one of the Book-Entry Transfer Facilities by the participant therein who so
delivered such Shares) as soon as practicable after the Expiration Date or
termination of the Offer without expense to the tendering shareholder. Under no
circumstances will the Company pay interest on the Purchase Price. In addition,
if certain events occur, the Company may not be obligated to purchase Shares
pursuant to the Offer. See "The Offer -- Certain Conditions of the Offer."
 
                                        8
<PAGE>   12
 
     The Company will pay all stock transfer taxes, if any, payable on the
transfer to it of Shares purchased pursuant to the Offer, provided, however,
that (i) if payment of the Purchase Price is to be made to, or (ii) (in the
circumstances permitted by the Offer) if unpurchased Shares are to be registered
in the name of, any person other than the registered owner, or if tendered
certificates are registered in the name of any person other than the person
signing the Letter of Transmittal, the amount of all stock transfer taxes, if
any (whether imposed on the registered owner or such other person), payable on
account of the transfer to such person will be deducted from the Purchase Price
unless evidence satisfactory to the Company of the payment of such taxes or
exemption therefrom is submitted. See Instruction 7 of the Letter of
Transmittal.
 
     ANY TENDERING SHAREHOLDER OR OTHER PAYEE WHO FAILS TO COMPLETE FULLY AND
SIGN THE SUBSTITUTE FORM W-9 INCLUDED IN THE LETTER OF TRANSMITTAL (OR, IN THE
CASE OF A FOREIGN INDIVIDUAL, FORM W-8 OBTAINABLE FROM THE DEPOSITARY) MAY BE
SUBJECT TO REQUIRED FEDERAL INCOME TAX BACKUP WITHHOLDING. SEE "THE
OFFER -- PROCEDURE FOR TENDERING SHARES -- FEDERAL INCOME TAX BACKUP
WITHHOLDING."
 
CERTAIN CONDITIONS OF THE OFFER
 
     Notwithstanding any other provision of the Offer, the Company shall not be
required to accept for payment, purchase or pay for any Shares tendered, and may
terminate or amend the Offer or may postpone (subject to the requirements of the
Exchange Act for prompt payment for or return of Shares) the acceptance for
payment of, the purchase of and the payment for, Shares tendered if, in the sole
judgment of the Company, at any time on or after September 10, 1996, and at or
before the time of purchase of any such Shares, any of the following events
shall have occurred (or shall have been determined by the Company to have
occurred) which, regardless of the circumstances (including any action or
omission to act by the Company), makes it inadvisable to proceed with the Offer
or with such purchase or payment:
 
          (a) there shall have been threatened, instituted or pending any action
     or proceeding by any government or governmental, regulatory or
     administrative agency or authority or tribunal or any other person,
     domestic or foreign, or before any court or governmental, regulatory or
     administrative authority or agency or tribunal, domestic or foreign, which:
     (1) challenges the making of the Offer, the acquisition of Shares pursuant
     to the Offer or otherwise relates in any manner to the Offer or (2) in the
     Company's sole judgment, could materially affect the business, condition
     (financial or other), income operations or prospects of the Company and its
     subsidiaries, taken as a whole, or otherwise materially impair in any way
     the contemplated future conduct of the business of the Company or any of
     its subsidiaries or materially impair the Offer's contemplated benefits to
     the Company; or
 
          (b) there shall have been any action threatened or taken, or approval
     withheld, or any statute, rule, regulation, judgment, order or injunction
     threatened, proposed, sought, promulgated, enacted, entered, amended,
     enforced or deemed to be applicable to the Offer or the Company or any of
     its subsidiaries, by any court or any government or governmental,
     regulatory or administrative authority or agency or tribunal, domestic or
     foreign, which, in the Company's sole judgment, would or might directly or
     indirectly: (1) make the acceptance for payment of, or payment for, some or
     all of the Shares illegal or otherwise restrict or prohibit consummation of
     the Offer, (2) delay or restrict the ability of the Company, or render the
     Company unable, to accept for payment or pay for some or all of the Shares,
     (3) materially impair the contemplated benefits of the Offer to the Company
     or (4) materially affect the business, condition (financial or other),
     income, operations or prospects of the Company and its subsidiaries, taken
     as a whole, or otherwise materially impair in any way the contemplated
     future conduct of the business of the Company or any of its subsidiaries;
     or
 
          (c) there shall have occurred: (1) the declaration of any banking
     moratorium or suspension of payments in respect of banks in the United
     States, (2) any general suspension of trading in, or limitation on prices
     for, securities on any United States national securities exchange or in the
     over-the-counter market, (3) the commencement or escalation of a war, armed
     hostilities or any other national or international crisis directly or
     indirectly involving the United States, (4) any limitation (whether or not
 
                                        9
<PAGE>   13
 
     mandatory) by any governmental, regulatory or administrative agency or
     authority on, or any event which, in the Company's sole judgment, might
     affect, the extension of credit by banks or other lending institutions in
     the United States, (5) any significant decrease in the market price of the
     Shares or in the general level of market prices of equity securities in the
     United States or abroad or any change in the general political, market,
     economic or financial conditions in the United States or abroad that could
     have a material adverse effect on the Company's business, operations or
     prospects or the trading in the Shares or that, in the sole judgment of the
     Company, makes it inadvisable to proceed with the Offer or (6) in the case
     of any of the foregoing existing at the time of the commencement of the
     Offer, in the Company's sole judgment, a material acceleration or worsening
     thereof; or
 
          (d) any change shall have occurred or be threatened in the business,
     condition (financial or other), income, operations, Share ownership or
     prospects of the Company and its subsidiaries, taken as a whole, which, in
     the Company's sole judgment, is or may be material to the Company or any
     other event shall have occurred which, in the Company's sole judgment,
     materially impairs the Offer's contemplated benefits; or
 
          (e) a tender or exchange offer for any or all of the Shares (other
     than the Offer), or any merger, business combination or other similar
     transaction with or involving the Company or any subsidiary (other than the
     proposed acquisition of Family and related transactions), shall have been
     proposed, announced or made by any person; or
 
          (f) any event shall have occurred which, in the Company's sole
     judgment, could prevent a condition to a party's obligation under the
     Agreement to consummate the Merger not being fulfilled (see "The
     Merger -- Conditions to the Merger").
 
     The foregoing conditions are for the Company's sole benefit and may be
asserted by the Company regardless of the circumstances giving rise to any such
condition (including any action or inaction by the Company) or may be waived by
the Company in whole or in part. The Company's failure at any time to exercise
any of the foregoing rights shall not be deemed a waiver of any such right and
each such right shall be deemed an ongoing right which may be asserted at any
time and from time to time. Any determination by the Company concerning the
above-described events shall be final and shall be binding on all parties.
 
EXTENSION OF THE OFFER; TERMINATION; AMENDMENT
 
     The Company expressly reserves the right, at any time or from time to time,
in its sole discretion, to extend the period of time during which the Offer is
open by giving oral or written notice of such extension to the Depositary and
making a public announcement thereof. The Company also expressly reserves the
right, in its sole discretion, to terminate the Offer and not accept payment or
pay for any Shares not theretofore accepted for payment or paid for or, subject
to applicable law, to postpone payment for Shares upon the occurrence of any of
the conditions specified under "The Offer -- Certain Conditions of the Offer" by
giving oral or written notice of such termination or postponement to the
Depositary and making a public announcement thereof. The Company's reservation
of the right to delay payment for Shares which it has accepted for payment is
limited by Rules 13e-4(f)(2) and 13e-4(f)(5) promulgated under the Exchange Act.
Rule 13e-4(f)(2) requires that the Company permit Shares tendered pursuant to
the Offer to be withdrawn: (i) at any time during the period the Offer remains
open; and (ii) if not yet accepted for payment, after the expiration of forty
business days from the commencement of the Offer. Rule 13e-4(f)(5) requires that
the Company must either pay the consideration offered or return the Shares
tendered promptly after the termination or withdrawal of the Offer. Subject to
compliance with applicable law, the Company further reserves the right, in its
sole discretion, at any time or from time to time to amend the Offer in any
respect, including increasing or decreasing the number of Shares the Company may
purchase or the range of prices it may pay pursuant to the Offer. Amendments to
the Offer may be made at any time or from time to time effected by public
announcement thereof, such announcement, in the case of an extension, to be
issued no later than 9:00 a.m., New York City time, on the next business day
after the previously scheduled Expiration Date. Any public announcement made
pursuant to the Offer will be disseminated promptly to shareholders in a manner
reasonably designed to inform shareholders of such change. Without limiting the
manner in which
 
                                       10
<PAGE>   14
 
the Company may choose to make a public announcement, except as required by
applicable law, the Company shall have no obligation to publish, advertise or
otherwise communicate any such public announcement other than by making a
release to the Dow Jones News Service.
 
     If (i) the Company increases or decreases the price to be paid for Shares,
or the Company increases the number of Shares being sought and any such increase
in the number of Shares being sought exceeds 2% of the outstanding Shares, or
the Company decreases the number of Shares being sought, and (ii) the Offer is
scheduled to expire at any time earlier than the expiration of a period ending
on the tenth business day from, and including, the date that notice of such
increase or decrease is first published, sent or given, the Offer will be
extended until the expiration of such period of ten business days. If the
Company otherwise materially changes the terms of the Offer or the information
concerning the Offer, or if it waives a material condition of the Offer, the
Company will extend the Offer to the extent required by Rules 13e-4(d)(2) and
13e-4(e)(2) promulgated under the Exchange Act. These rules require that the
minimum period during which an offer must remain open following material changes
in the terms of the offer or information concerning the offer (other than a
change in price or a change in percentage of securities sought) will depend on
the facts and circumstances, including the relative materiality of such terms or
information.
 
PRICE RANGE OF THE SHARES; DIVIDENDS
 
<TABLE>
     The following table sets forth during the periods indicated the high and
low sales prices of a share of Common Stock as reported on the Nasdaq Stock
Market's National Market and the dividends declared per share of Common Stock.
 
<CAPTION>
                                                           MARKET PRICE         DIVIDENDS
                                                        -------------------     DECLARED
                                                         HIGH         LOW       PER SHARE
                                                        -------     -------     ---------
        <S>                                             <C>         <C>           <C>
        1996
        First Quarter.................................  $22.75      $19.00        $ .14
        Second Quarter................................   22.25       19.375         .17
        Third Quarter (through September 9)...........   22.375      19.00          .17

        1995
        First Quarter.................................   14.00       11.75          .09
        Second Quarter................................   16.75       12.375         .12
        Third Quarter.................................   20.50       15.25          .12
        Fourth Quarter................................   22.875      18.25          .13

        1994
        First Quarter.................................   12.50       10.125         .01
        Second Quarter................................   14.00       10.125         .05
        Third Quarter.................................   15.00       12.25          .08
        Fourth Quarter................................   15.125      10.375         .09
</TABLE>
 
     On May 30, 1996, the last trading day preceding public announcement of the
Agreement and the Company's intention to repurchase shares of Common Stock in
connection with the Merger, the high and low sales prices of a share of Common
Stock were $20.00 and $19.625, respectively. On June 19, 1996, the last trading
day preceding public announcement by the Company that it was likely to
repurchase shares of Common Stock in connection with the Merger by means of a
tender offer, the high and low sales prices of a share of Common Stock were
$20.625 and $20.375, respectively. On September 9, 1996, the most recent
practicable date prior to the printing of this Offer to Purchase, the high and
low sales prices of a share of Common Stock were $22.375 and $22.00,
respectively. Shareholders are urged to obtain current market quotations for the
Common Stock.
 
                                       11
<PAGE>   15
 
SOURCE AND AMOUNT OF FUNDS
 
     Assuming that the Company purchases 2,500,000 Shares pursuant to the Offer
at a price of $24.00 per share, the Company estimates that the maximum aggregate
cost of the Offer, including all fees and expenses applicable to the Offer,
would be approximately $60.3 million.
 
     The Company plans to obtain the funds needed for the Offer from cash and
securities held by the Company.
 
BACKGROUND OF AND PURPOSE OF THE OFFER; RECOMMENDATION OF THE BOARD OF DIRECTORS
OF THE COMPANY
 
     The Offer is being conducted in connection with the Company's pending
acquisition of Family. See "The Merger -- Background of the Merger." In
connection with its evaluation of this transaction, management of the Company
determined that a repurchase of shares of Common Stock could improve the
anticipated financial performance of the Company following an acquisition of
Family. Subsequent to announcement on May 31, 1996 of the Agreement and the
Company's general intention to repurchase shares of Common Stock in connection
therewith, the Company determined, after consultation with its financial
advisor, that an issuer tender offer likely would be the most effective means of
acquiring the desired number of shares of Common Stock and issued a press
release to this effect on June 20, 1996.
 
     The Company determined that the repurchase of shares of Common Stock in
connection with the Merger would be beneficial because of its estimated effects
on earnings per share. Based on the assumptions set forth under "Pro Forma
Combined Consolidated Financial Information," management of the Company
estimates that the pro forma earnings per share of Common Stock for the six
months ended June 30, 1996 and the year ended December 31, 1995 would be $0.85
and $1.71, respectively, if it is assumed that both the Merger and the Offer
were consummated at the beginning of such periods, as compared to $0.82 and
$1.64, respectively, if it is assumed that only the Merger was consummated as of
the beginning of such periods. (As noted under "Pro Forma Combined Consolidated
Financial Information," none of the foregoing estimates give effect to
anticipated cost savings in connection with the Merger.)
 
     Following completion of the Offer and the Merger, the Company and each of
its banking subsidiaries will continue to have strong capital positions. In this
regard, the Company's leverage capital ratio and risk-based capital ratios will
continue to exceed the thresholds established by the federal banking agencies
under the prompt corrective action scheme set forth in Section 38 of the Federal
Deposit Insurance Act, and each of the Company's banking subsidiaries will
continue to qualify as "well capitalized" institutions under the same. Based on
the assumptions set forth under "Pro Forma Combined Consolidated Financial
Information," management of the Company estimates that the Company's Tier I
leverage capital ratio and total risk-based capital ratio as of June 30, 1996
would amount to 6.57% and 11.48%, respectively, if it is assumed that both the
Merger and the Offer were consummated as of such date.
 
     The Offer will enable shareholders to sell a portion of their Shares while
retaining a continuing equity interest in the Company if they so desire. The
Offer will increase the Company's leverage, with an attendant increase in the
risks and rewards for persons who retain a continuing equity interest in the
Company. In addition, persons who determine not to accept the Offer will realize
a proportionate increase in their relative equity interest in the Company, and
thus in the Company's future earnings and assets, subject to increased risks and
rewards resulting from higher leverage and to the Company's ability to issue
additional Shares or other equity securities in the future.
 
     The Offer may provide shareholders who are considering a sale of all or a
portion of their Shares the opportunity to determine the price or prices (not
greater than $24.00 nor less than $21.00 per Share) at which they are willing to
sell their Shares and, if any such Shares are purchased pursuant to the Offer,
to sell those Shares for cash without the usual transaction costs associated
with open-market sales. The Offer also may give shareholders the opportunity to
sell Shares at prices greater than market prices prevailing prior to
announcement of the Offer. See "The Offer -- Price Range of the Shares;
Dividends." To the extent the purchase of Shares in the Offer results in a
reduction in the number of shareholders of record, the costs of the Company for
services to shareholders may be reduced.
 
                                       12
<PAGE>   16
 
     THE BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED THE OFFER. HOWEVER, NEITHER
THE COMPANY NOR ITS BOARD OF DIRECTORS MAKES ANY RECOMMENDATION TO ANY
SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING ANY OR ALL OF SUCH
SHAREHOLDER'S SHARES AND HAS NOT AUTHORIZED ANY PERSON TO MAKE ANY SUCH
RECOMMENDATION. SHAREHOLDERS ARE URGED TO EVALUATE CAREFULLY ALL INFORMATION IN
THE OFFER, CONSULT THEIR OWN INVESTMENT AND TAX ADVISORS AND MAKE THEIR OWN
DECISIONS WHETHER TO TENDER SHARES AND, IF SO, HOW MANY SHARES TO TENDER AND THE
PRICE OR PRICES AT WHICH SHARES SHOULD BE TENDERED.
 
     Following completion of the Offer, the Company may repurchase additional
Shares in the open market, in privately negotiated transactions or otherwise,
but currently intends to do so only to the extent of the excess, if any, of the
2,500,000 Shares sought to be purchased in the Offer over the actual number of
Shares acquired pursuant to the Offer. Any such purchases may be on the same
terms or on terms which are more or less favorable to shareholders than the
terms of the Offer. Rule 13e-4 under the Exchange Act prohibits the Company and
its affiliates from purchasing any Shares, other than pursuant to the Offer,
until at least ten business days after the Expiration Date. Any possible future
purchases by the Company will depend on many factors, including the market price
of the Shares, the results of the Offer, the Company's business and financial
position and general economic and market conditions.
 
INTERESTS OF DIRECTORS AND EXECUTIVE OFFICERS; TRANSACTIONS AND ARRANGEMENTS
CONCERNING THE SHARES
 
     As of August 31, 1996, the directors and executive officers of the Company
and their affiliates in the aggregate beneficially owned 944,215 Shares
(including 378,825 Shares which may be acquired upon the exercise of outstanding
stock options which may be exercised within 60 days of such date), or 3.7% of
the outstanding Shares (including Shares subject to such stock options). In
addition, as of August 31, 1996, the Company's ESOP and TIP held of record
341,456 Shares and 251,442 Shares, respectively, which represent 1.4% and 1.0%,
respectively, of the outstanding Shares.
 
     With the exception of Davis Thurber, a director of the Company who may
tender up to 50,000 Shares but has not yet made a decision in this regard, the
Company has been advised that no director or executive officer intends to tender
any Shares pursuant to the Offer. Decisions as to whether Shares held in the
ESOP and the TIP will be tendered pursuant to the Offer will be made as
described under "The Offer -- Procedure for Tendering Shares."
 
     If the Company purchases 2,500,000 Shares (or approximately 9.9% of the
Shares outstanding at August 31, 1996) pursuant to the Offer, the directors and
executive officers of the Company and their affiliates as a group would
beneficially own approximately 4.1% (3.9% in the event Mr. Thurber tenders
50,000 Shares) of the outstanding Shares (including Shares issuable upon the
exercise of outstanding stock options which may be exercised within 60 days of
August 31, 1996) and, assuming that none of the Shares held in the ESOP and the
TIP are tendered, such plans would hold approximately 1.5% and 1.1% of the
outstanding Shares, respectively.
 
     Except as set forth on Schedule A, based upon the Company's records and
upon information provided to the Company by its directors, executive officers
and affiliates, neither the Company nor any of its subsidiaries nor, to the best
of the Company's knowledge, any of the directors or executive officers of the
Company, nor any associates of any of the foregoing, has effected any
transactions in the Shares during the 40 business day period prior to the date
hereof.
 
     Except as set forth in this Offer to Purchase, neither the Company nor, to
the best of the Company's knowledge, any of its affiliates, directors or
executive officers, or any of the executive officers or directors of its
subsidiaries, is a party to any contract, arrangement, understanding or
relationship with any other person relating, directly or indirectly, to the
Offer with respect to any securities of the Company (including, but not limited
to, any contract, arrangement, understanding or relationship concerning the
transfer or the voting of any such securities, joint ventures, loan or option
arrangements, puts or calls, guaranties of loans, guaranties against loss or the
giving or withholding of proxies, consents or authorizations).
 
                                       13
<PAGE>   17
 
CERTAIN EFFECTS OF THE OFFER ON THE SHARES; REGISTRATION UNDER THE EXCHANGE ACT
 
     The Company's purchase of Shares pursuant to the Offer will reduce the
number of Shares that might otherwise be traded publicly and may reduce the
number of shareholders. Nonetheless, the Company believes that there will be a
sufficient number of Shares outstanding and publicly traded following
consummation of the Offer to ensure a continued trading market for the Shares.
Based upon published guidelines of the Nasdaq Stock Market's National Market,
the Company does not believe that its purchase of Shares pursuant to the Offer
will cause the Company's remaining Shares to be delisted from the Nasdaq Stock
Market's National Market.
 
     The Shares are currently "margin securities" under the rules of the Board
of Governors of the Federal Reserve System ("FRB"). This has the effect, among
other things, of allowing brokers to extend credit to their customers using such
Shares as collateral. The Company believes that, following the purchase of
Shares pursuant to the Offer, the Shares will continue to be "margin securities"
for purposes of the FRB's margin regulations.
 
     Shares the Company acquires pursuant to the Offer will be held in the
Company's treasury and will be available for the Company to issue without
further shareholder action (except as may be required by applicable law or the
rules of the Nasdaq Stock Market's National Market). Shares acquired pursuant to
the Offer could be issued without shareholder approval for general or other
corporate purposes, including stock splits or dividends, the acquisition of
other businesses, the raising of additional capital for use in the Company's
business and the implementation of employee benefits plans. It is the current
intention of the Company to issue Shares acquired by it pursuant to the Offer in
connection with the pending acquisition of Family pursuant to the Agreement. See
"The Merger."
 
     If the Merger is consummated pursuant to the Agreement, the Company
believes that its purchase of Shares pursuant to the Offer will not prevent it
from accounting for any acquisitions which it may effect during the two-year
period following the Expiration Date as a "pooling of interests" under generally
accepted accounting principles or otherwise affect prior acquisitions of the
Company accounted for on this basis. See "The Company." If the Merger is not
consummated pursuant to the Agreement, the Company intends to promptly reissue,
in an underwritten offering managed by the Dealer Manager, a number of Shares
purchased pursuant to the Offer which it believes is sufficient to not have the
foregoing effects regarding the ability of the Company to account for
acquisitions by it as a "pooling of interests."
 
     The Shares are registered under the Exchange Act, which requires, among
other things, that the Company furnish certain information to its shareholders
and the Securities and Exchange Commission (the "Commission") and comply with
the Commission's proxy rules in connection with meetings of the Company's
shareholders. See "Available Information." The Company believes that its
purchase of Shares pursuant to the Offer will not result in the Shares becoming
eligible for deregistration under the Exchange Act.
 
CERTAIN LEGAL MATTERS; REGULATORY APPROVALS
 
     As a registered bank holding company under the Bank Holding Company Act of
1956, as amended ("BHCA"), the Company is subject to regulation and supervision
by the FRB, and as a financial institution holding company under Part 10 of
Title 9-B, Maine Revised Statutes Annotated, the Company is subject to
regulation and supervision by the Superintendent of Banking of the State of
Maine (the "Superintendent"). In addition, the Company will register as a
savings and loan holding company under the Home Owners' Loan Act, as amended
("HOLA"), upon consummation of the Merger, and as a result will become subject
to certain regulation and supervision by the Office of Thrift Supervision
("OTS"). See "The Merger -- Certain Regulatory Considerations."
 
     Except for a notice to the Superintendent under Maine law, which has been
provided by the Company, the Company is not aware of any approval or other
action by any government or governmental, administrative or regulatory authority
or agency that would be required for the Company's purchase of Shares pursuant
to the Offer. Should any such approval or other action be required, the Company
currently contemplates that it will seek such approval or other action. The
Company cannot predict whether it may be required to delay the
 
                                       14
<PAGE>   18
 
acceptance for payment of, or payment for, Shares tendered pursuant to the Offer
pending the outcome of any such matter. There can be no assurance that any such
approval or other action, if needed, would be obtained or would be obtained
without substantial conditions or that the failure to obtain any such approval
or other action might not result in adverse consequences to the Company's
business. The Company's obligations under the Offer to accept for payment and
pay for Shares is subject to certain conditions. See "The Offer -- Certain
Conditions of the Offer."
 
     Each of the BHCA and the Change in Bank Control Act set forth thresholds
with respect to the ownership of voting shares of a bank holding company of 5%
and 10%, respectively, over which the owner of such voting shares may be
determined to control such bank holding company, and Maine banking law sets
forth a threshold with respect to the ownership of voting shares of a financial
institution holding company of 5%, over which the owner of such voting shares
may be determined to control such financial institution holding company. In
addition, similar thresholds are applicable to the ownership of voting shares of
a savings and loan holding company under provisions of the HOLA and the Change
in Bank Control Act, which will become applicable to the Company upon
consummation of the Merger. If, as a result of the Offer, the ownership interest
of any shareholder in the Company is increased over these thresholds, such
shareholder may be required to reduce its ownership interest in the Company.
Each shareholder whose ownership interest may be so increased is urged to
consult the shareholder's own legal counsel with respect to the consequences to
the shareholder of the Offer.
 
CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
     The United States federal income tax discussion set forth below summarizes
the principal federal income tax consequences to domestic shareholders of sales
of stock pursuant to the Offer and is included for general information only. The
discussion does not address all aspects of federal income taxation that may be
relevant to a particular shareholder or any state, local, foreign or other tax
laws which may be applicable. Certain shareholders (including, but not limited
to, insurance companies, tax-exempt entities, foreign persons, financial
institutions, broker dealers, employee benefit plans, personal holding companies
and persons who acquired their Shares upon the exercise of employee stock
options or as compensation) may be subject to special rules not discussed below.
The discussion is based on the Internal Revenue Code of 1986, as amended (the
"Code"), Treasury regulations promulgated thereunder and Internal Revenue
Service rulings and pronouncements and judicial decisions thereunder, all as in
effect on the date hereof and all of which are subject to change at any time,
possibly with retroactive effect.
 
     EACH TENDERING SHAREHOLDER IS URGED TO CONSULT HIS OR HER OWN TAX ADVISOR
TO DETERMINE THE ACTUAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES, AND ANY
STATE, LOCAL, FOREIGN OR OTHER TAX CONSEQUENCES, TO SUCH TENDERING SHAREHOLDER
OF A DISPOSITION OF SHARES PURSUANT TO THE OFFER.
 
     GENERAL.  In general, a sale of Shares pursuant to the Offer will be a
taxable transaction for federal income tax purposes. Such sale will constitute a
"redemption" within the meaning of Section 317 of the Code. Each tendering
shareholder will recognize either gain or loss from a sale of Shares or dividend
income, depending upon the application of Section 302 of the Code to the
shareholder's particular facts and circumstances. If the redemption qualifies as
a sale of Shares under Section 302, the cash received pursuant to the Offer will
be treated as a distribution from the Company in part or full payment in
exchange for the Shares surrendered. Sale treatment will result in the
shareholder's recognizing gain or loss equal to the difference between (i) the
cash received pursuant to the Offer and (ii) the shareholder's tax basis in the
Shares surrendered. If the redemption does not qualify as a sale of Shares under
Section 302, the shareholder will not be treated as having sold Shares but will
be treated as having received a dividend taxable as ordinary income in an amount
equal to the cash received pursuant to the Offer.
 
     SALE TREATMENT.  Under Section 302 of the Code, a sale of Shares pursuant
to the Offer will be treated as a sale of such Shares for federal income tax
purposes if such sale of Shares (i) is a "substantially disproportionate
redemption" with respect to the shareholder, (ii) results in a "complete
redemption" of all of
 
                                       15
<PAGE>   19
 
the shareholder's stock in the Company or (iii) is "not essentially equivalent
to a dividend" with respect to the shareholder. In determining whether any of
these three tests under Section 302 (the "Section 302 tests") is satisfied,
shareholders must take into account not only Shares that they actually own, but
also any shares that they are treated as owning pursuant to the constructive
ownership rules of Section 318 of the Code. Pursuant to these constructive
ownership rules, a shareholder is deemed to constructively own any Shares that
are owned by certain related individuals and entities and any Shares that the
shareholder has a right to acquire by exercise of an option or by conversion or
exchange of a security.
 
     THE SECTION 302 TESTS.  One of the following tests must be satisfied in
order for the exchange of Shares pursuant to the Offer to be treated as a sale
rather than as a dividend distribution.
 
     Substantially Disproportionate Redemption Test.  A tendering shareholder's
sale of Shares pursuant to the Offer will be a "substantially disproportionate
redemption" with respect to the shareholder if the percentage of Shares actually
and constructively owned by the shareholder compared to all the outstanding
Shares immediately following the sale of Shares pursuant to the Offer (treating
as not outstanding all Shares sold by shareholders pursuant to the Offer) is
less than 80% of the percentage of Shares actually and constructively owned by
the shareholder compared to all the outstanding Shares immediately before the
sale of Shares pursuant to the Offer (treating as outstanding all Shares sold by
shareholders pursuant to the Offer). This test will be applied to each
shareholder individually, regardless of the effect of the redemption on other
shareholders.
 
     Complete Redemption Test.  A tendering shareholder's exchange of Shares
pursuant to the Offer will generally result in a "complete redemption" of all
the shareholder's stock in the Company if, pursuant to the Offer, the Company
purchases all of the Shares actually owned by the shareholder and subsequently
the shareholder does not constructively own any Shares. If the shareholder's
sale of Shares pursuant to the Offer would satisfy the complete redemption
requirement but for the shareholder's constructive ownership of Shares held by
certain family members, such shareholder may, under certain circumstances, be
entitled to waive such constructive ownership, provided that the shareholder
complies with the provisions of Section 302(c) of the Code. If a tendering
shareholder actually owns no Shares after selling his or her Shares pursuant to
the Offer, constructively owns only Shares owned by certain family members and
the shareholder qualifies to and does waive constructive ownership of Shares
owned by certain family members, that redemption of Shares should qualify as a
"complete redemption."
 
     Not Essentially Equivalent to a Dividend Test.  A tendering shareholder's
sale of Shares pursuant to the Offer will "not be essentially equivalent to a
dividend" if, as a result of the sale of Shares pursuant to the Offer, the
shareholder experiences a "meaningful reduction" in his or her proportionate
interest in the Company, including the shareholder's voting rights,
participation in earnings and liquidation rights and taking into account the
constructive ownership rules. In certain circumstances, even a small reduction
in a shareholder's proportionate stock interest may satisfy this test. For
example, the Internal Revenue Service has indicated in a published ruling that a
3.3% reduction in the proportionate stock interest of a small (substantially
less than 1%) shareholder in a publicly-held corporation who exercised no
control over corporate affairs constitutes such a "meaningful reduction."
 
     A shareholder's ability to satisfy any of the Section 302 tests may be
affected by proration pursuant to the Offer. Thus, a shareholder can be given no
assurance, even if he or she tenders all of the Shares actually and
constructively owned by him or her, that the Company will purchase a sufficient
number of such Shares to permit him or her to satisfy any of the Section 302
tests. A tendering shareholder may be able to take into account acquisitions or
dispositions of Shares which are substantially contemporaneous with the Offer in
determining whether any of the Section 302 tests is satisfied. Tendering
shareholders are strongly advised to consult their own tax advisors regarding
the tax consequences of such transactions in their particular circumstances.
 
     If any of the Section 302 tests if satisfied, the tendering shareholder
will recognize gain or loss equal to the difference between the amount of cash
received by the shareholder pursuant to the Offer and the shareholder's tax
basis in the Shares sold. Such gain or loss must be determined separately for
each block of Shares sold (i.e., Shares acquired at the same time in a single
transaction), and will be capital gain or loss,
 
                                       16
<PAGE>   20
 
assuming the Shares were held by the shareholder as a capital asset. Capital
gain or loss will be long-term capital gain or loss if, at the time the Company
accepts the Shares for payment, the Shares were held by the shareholder for more
than one year.
 
     DIVIDEND TREATMENT.  If none of the Section 302 tests is satisfied, the
tendering shareholder generally will be treated as having received a dividend
taxable as ordinary income in an amount equal to the total cash received by the
shareholder pursuant to the Offer, provided that the Company has sufficient
accumulated or current earnings and profits. The Company expects that its
current and accumulated earnings and profits will be sufficient to cover the
amount of all distributions pursuant to the Offer, if any, that are treated as
dividends. To the extent that the purchase of Shares from any shareholder
pursuant to the Offer is treated as a dividend, such shareholder's tax basis in
any Shares which the shareholder actually or constructively retains after
consummation of the Offer will be increased by the shareholder's tax basis in
the Shares surrendered pursuant to the Offer.
 
     TREATMENT OF DIVIDEND INCOME FOR CORPORATE SHAREHOLDERS.  In the case of a
corporate shareholder, if the cash received for Shares pursuant to the Offer is
treated as a dividend, the dividend income may be eligible for the 70%
dividends-received deduction under Section 243 of the Code. The
dividends-received deduction is subject to certain limitations and may not be
available if the corporate shareholder does not satisfy certain holding period
requirements with respect to the Shares or if the Shares are treated as
"debt-financed portfolio stock." The Company believes that the Offer will not
result in a pro rata distribution to all shareholders. Consequently, dividends
received by corporate shareholders pursuant to the Offer likely will be treated
as "extraordinary dividends" as defined by Section 1059 of the Code. Corporate
shareholders should consult their tax advisors as to the availability of the
dividends-received deduction and the application of Section 1059 of the Code.
 
FEES AND EXPENSES
 
     The Company has retained Keefe, Bruyette & Woods, Inc. as Dealer Manager in
connection with the Offer. The Dealer Manager will receive a fee of $0.10 per
Share purchased by the Company pursuant to the Offer. The Company also will
reimburse the Dealer Manager for its reasonable out-of-pocket expenses relating
to the Offer, including reasonable fees and expenses of counsel. The Company has
agreed to indemnify the Dealer Manager against certain liabilities in connection
with the Offer, including certain liabilities under the federal securities laws.
The Dealer Manager and the Company are party to a retainer agreement pursuant to
which the Dealer Manager renders investment banking and advisory services to the
Company during 1996 in exchange for a retainer of $50,000. The Dealer Manager
also has rendered various investment banking and advisory services to the
Company in the past, for which it has received customary compensation.
 
     The Company has retained Morrow & Co., Inc. as Information Agent and
American Stock Transfer and Trust Company as Depositary in connection with the
Offer. The Information Agent may contact shareholders by mail, telephone, telex,
telegraph and personal interviews, and may request brokers, dealers and other
nominee shareholders to forward materials relating to the Offer to beneficial
owners. The Depositary and the Information Agent will receive reasonable and
customary compensation for their services. The Company also will reimburse the
Depositary and the Information Agent for out-of-pocket expenses, including
reasonable attorneys' fees, and has agreed to indemnify the Depositary and the
Information Agent against certain liabilities in connection with the Offer,
including certain liabilities under the federal securities laws. Neither the
Information Agent nor the Depositary has been retained to make solicitations or
recommendations in connection with the Offer.
 
     The Company will not pay fees or commissions to any broker, dealer,
commercial bank, trust company or other person (other than the Dealer Manager)
for soliciting any Shares pursuant to the Offer. The Company will, however, on
request through the Information Agent, reimburse such persons for customary
handling and mailing expenses incurred in forwarding materials in respect of the
Offer to the beneficial owners for which they act as nominees. No such broker,
dealer, commercial bank or trust company has been authorized to act as
 
                                       17
<PAGE>   21
 
the Company's agent for purposes of the Offer. The Company will pay (or cause to
be paid) any stock transfer taxes on its purchase of Shares, except as otherwise
provided in Instruction 7 of the Letter of Transmittal.
 
     For information regarding expenses relating to the Merger, see "The
Merger -- Expenses of the Merger."
 
                                   THE MERGER
 
     The following information relating to the Merger does not purport to be
complete and is qualified in its entirety by reference to the Agreement, a copy
of which has been incorporated by reference in the Schedule 13E-4 of which this
Offer to Purchase is a part. The Agreement may be inspected or obtained in the
manner set forth under "Available Information."
 
GENERAL
 
     In accordance with the terms of and subject to the conditions set forth in
the Agreement, Family will be merged with and into Merger Corp., with Merger
Corp. as the surviving corporation of the Merger. Upon consummation of the
Merger, Merger Corp. shall succeed to all the rights, obligations and properties
of Family, the separate corporate existence of which shall cease as a result of
the Merger.
 
     The Agreement provides that at the Effective Time each outstanding share of
Family Common Stock (other than (i) any dissenting shares under Massachusetts
law and (ii) any shares held by the Company or a subsidiary thereof other than
in a fiduciary capacity or in satisfaction of a debt previously contracted)
shall, by virtue of the Merger and without any action on the part of the holder
thereof, be converted into the right to receive 1.26 shares of Common Stock,
subject to possible adjustment under certain circumstances, plus cash in lieu of
any fractional share interest.
 
     No fractional shares of Common Stock shall be issued in the Merger to
holders of shares of Family Common Stock. Each holder of shares of Family Common
Stock who otherwise would have been entitled to a fraction of a share of Common
Stock shall receive in lieu thereof, at the time of surrender of the certificate
or certificates representing such holder's shares of Family Common Stock, an
amount of cash (without interest) determined by multiplying the fractional share
interest to which such holder would otherwise be entitled by the closing per
share price of the Common Stock on the Nasdaq Stock Market's National Market on
the business day preceding the Effective Time.
 
     Each of the Board of Directors of the Company and the Board of Directors of
Family has unanimously approved the Agreement and the transactions contemplated
thereby and believes that the Merger is fair to and in the best interests of the
Company and Family, respectively, and its respective shareholders. The
shareholders of the Company and the shareholders of Family approved the
Agreement at special meetings of shareholders of the Company and Family,
respectively, held on August 22, 1996 (the "Company Special Meeting" and the
"Family Special Meeting," respectively).
 
BACKGROUND OF THE MERGER
 
     Over the past several years, the Board of Directors of Family and its
senior executive officers have regularly reviewed Family's strategic
alternatives with the assistance of Family's financial advisor. These reviews
have focused on assessing Family's opportunities for increasing long-term
shareholder value, including opportunities for enhancing earnings internally and
for growth through possible strategic acquisitions or affiliations with other
financial institutions.
 
     Although Family enjoyed record earnings of approximately $8.0 million in
1995, Family recognized that its ability to continually produce increasing
earnings growth in the future would be difficult for a number of reasons,
including intense competition for loans in Family's market, the fact that
Family's operating expenses had already been reduced to a level below peer
averages and the reduced availability of small in-market banks that might be
acquisition targets. In early 1996, after an extensive review of the banking
environment, Family's management and Board of Directors concluded that, while
Family was poised to continue earning a good return for its shareholders, it was
appropriate to explore whether a strategic combination with another financial
 
                                       18
<PAGE>   22
 
institution might have the potential for creating even greater shareholder
value. Exploring possible strategic alliances seemed especially advisable
following the late 1995 announcements of two significant New Hampshire bank
acquisitions (including the Company's acquisition of Bank of New Hampshire
Corporation ("BNHC")), which resulted in increasing attention being focused on
Merrimack Valley financial institutions as potential acquisition targets.
 
     Given the Company's recent acquisition activity in New Hampshire
(contiguous to Family's New Hampshire franchise), its financial strength, and
its community banking focus, it appeared to Family that the Company might have a
strong strategic interest in Family's franchise and that an affiliation with the
Company might be possible on terms that would enhance long-term, shareholder
value. Therefore, after consulting with members of the Family Board's Mergers
and Acquisitions Committee, Family's President, David D. Hindle, scheduled a
meeting for January 16, 1996 with the Company's President, William J. Ryan. At
that meeting, Mr. Hindle and Mr. Ryan spoke in general terms about the two
companies' business philosophies, their complementary geographic and product
franchises and the rationale for a potential business combination between them.
At that meeting, Mr. Ryan indicated that the Company was interested in moving
into northern Massachusetts and that, although there were other possible targets
in Family's market, Family appeared to be the most attractive vehicle for an
entrance into northern Massachusetts for a variety of reasons, including
Family's geographic franchise and earnings performance.
 
     Following the initial meeting between the two presidents, the Board of
Directors of Family met on January 19, 1996 to discuss strategic alternatives
available to Family, including the pursuit of potential acquisition targets,
adopting a "wait and see" attitude toward the consolidation activity in the New
England market, pursuing a "merger of equals" with another similarly-sized
institution or exploring a strategic affiliation with a larger institution such
as the Company. After much discussion of various options available to Family,
the Board of Directors of Family agreed that it made sense to keep the lines of
communication open with the Company, with the understanding that the Company was
not in a position to engage in serious negotiations at that time in light of its
pending acquisition of BNHC. To that end, Mr. Hindle and Mr. Ryan continued
their informal discussions at two subsequent meetings, on February 22, 1996 and
March 14, 1996.
 
     During this period, Family's management, with the assistance of its
financial advisor, McConnell, Budd & Downes, Inc., continued to consider whether
or not there were other possible strategic partners that seemed as potentially
attractive as the Company from a shareholder, employee, and strategic "fit"
perspective. Based upon its analysis, Family confirmed its earlier judgment that
the Company appeared to be the most logical potential partner, and would be most
likely to be in a position to enter into a strategic alliance on terms that
would be attractive to Family's shareholders, employees, customers and
community.
 
     At a meeting of the Board of Directors of Family on March 25, 1996,
representatives of Family's financial advisor and legal counsel made
presentations to the Board of Directors of Family outlining various factors to
be considered in evaluating various strategic alternatives, including remaining
an independent entity, seeking to acquire smaller institutions, seeking a merger
of equals and entering into a strategic combination with a larger institution.
Family's financial advisor also reviewed with the Board of Directors of Family
an analysis of the Company and the other New England financial institutions that
appeared to have the financial capacity to consider a transaction with Family.
After the presentations and lengthy discussions, the Board of Directors of
Family authorized Mr. Hindle to seek a nonbinding expression of interest from
the Company, outlining the proposed terms of a possible business combination.
 
     On March 28, 1996, the Company sent to Family a letter which indicated the
Company's interest in discussing a transaction with Family and proposed in
general terms the structure of a possible transaction and potential plans for
integrating the combined companies. The March 28 letter summarized the informal
discussions that Mr. Hindle and Mr. Ryan had held, but did not constitute an
offer or propose any financial terms of a possible transaction. The March 28
letter included a Confidentiality Agreement, which the parties signed as of
April 3, 1996.
 
     During the month of April, Family and the Company were occupied with other
matters, including preparing for their respective annual shareholders meetings,
and as a result the parties held no further meetings until May 3, 1996. At the
May 3 meeting, Family and the Company exchanged and discussed certain
confidential financial information to enable the parties to further assess the
viability of a business
 
                                       19
<PAGE>   23
 
combination between them. Over the next several days, officers of the Company
and Family continued to exchange confidential financial and operational data.
 
     On May 15, 1996, the Company sent a letter to Family setting forth a
proposed exchange ratio and other terms of a possible combination. Over the next
several days, senior management and financial advisors of each of Family and the
Company continued to discuss the financial and other terms of the proposed
merger, including the Exchange Ratio, and issues relating to the management and
operations of the parties following the Merger. During this period the Exchange
Ratio was determined on the basis of arms'-length negotiations between the
parties.
 
     On May 22, 1996, the Board of Directors of Family met to discuss the terms
of the proposal. Mr. Hindle reviewed with the Board of Directors of Family the
reasons for and the potential benefits of the Merger, and Family's financial and
legal advisors made further presentations about the terms of the proposal, the
available alternatives and the factors to be considered. After a lengthy
discussion, the Board of Directors of Family authorized management to move
forward to negotiate the terms of a definitive merger agreement for presentation
to the Board of Directors of Family at a meeting the following week.
 
     Over the next week, the parties and their representatives conducted due
diligence with respect to the other's financial condition and other relevant
matters. Also during that week, the parties and their legal counsel negotiated
the terms of the definitive Agreement and related Stock Option Agreements.
Family representatives met with Family's legal and financial advisors on May 27,
1996 to discuss a draft Agreement and the provisions requiring further
negotiation. After discussing various provisions with the Company
representatives by phone and circulating written comments by fax, the parties
and their legal and financial advisors met on May 28 to negotiate the remaining
issues in the Agreement.
 
     On May 28, 1996, at a meeting of the Board of Directors of the Company,
management of the Company reviewed with the Board of Directors the reasons for
and potential benefits of the proposed Agreement and related agreements. In
addition, the Company's financial advisor, the Dealer Manager, made a detailed
presentation regarding the financial terms of the Merger, and advised the Board
of Directors of the Company that, in its opinion, and based on facts known to it
at that date, the Exchange Ratio was fair, from a financial point of view, to
the shareholders of the Company as of that date. After a thorough discussion,
the Board of Directors of the Company unanimously approved the Agreement and the
related Stock Option Agreements and the transactions contemplated thereby.
 
     At a meeting on May 30, 1996, the Board of Directors of Family met to
consider the Agreement in final form. The Board of Directors of Family heard
detailed reports on the results of the due diligence on the financial condition
and operations of the Company, including its recently-acquired subsidiary, Bank
of New Hampshire ("BNH"). Family's legal counsel reviewed the terms of the
Agreement and the related Stock Option Agreements. Representatives of Family's
financial advisor made a detailed presentation regarding the financial terms of
the Merger, and advised the Board of Directors of Family that, in its opinion,
and based on facts known to it at that date, the Exchange Ratio was fair, from a
financial point of view, to the Family shareholders as of that date. After
several hours of discussion, the Board of Directors of Family unanimously voted
to approve the Agreement and the Stock Option Agreements and the transactions
contemplated thereby.
 
REASONS OF THE COMPANY FOR THE MERGER
 
     In reaching its determination to approve and adopt the Agreement and the
transactions contemplated thereby, the Board of Directors of the Company
considered a number of factors, including, without limitation, the following:
(i) the Board of Directors of the Company's review, with the assistance of
management and its financial advisor, of the financial condition, results of
operations, business and overall prospects of Family; (ii) the fact that
Family's strong banking franchise is contiguous to the Company's existing
banking franchise in New Hampshire and that the Merger would result in the
Company having a significant presence in important markets in northern
Massachusetts; (iii) the enhanced ability of the combined entity to compete
against larger competitors; (iv) the financial presentations of senior
management and the Company's financial advisor and the opinion of its financial
advisor as to the fairness of the Exchange Ratio from a financial point of view
to the Company's shareholders; (v) the anticipated cost savings and operating
efficiencies available to
 
                                       20
<PAGE>   24
 
the combined institution from the Merger; (vi) the expectation that the Merger
will be a tax-free transaction to the Company and its subsidiaries; (vii) the
nature of, and likelihood of obtaining, the regulatory approvals that would be
required with respect to the Merger; and (viii) the estimated effects of a
program to repurchase shares of Common Stock in connection with the acquisition
of Family.
 
     The foregoing discussion of the information and factors discussed by the
Board of Directors of the Company are not meant to be exhaustive but is believed
to include all material factors considered by the Board of Directors. The Board
of Directors did not quantify or attach any particular weight to the various
factors that it considered in reaching its determination that the Merger is in
the best interests of the Company and its shareholders.
 
ASSUMPTION OF FAMILY STOCK OPTIONS
 
     Directors, officers and employees of Family have been granted options (the
"Family Options") to purchase shares of Family Common Stock, generally pursuant
to Family's 1995 Incentive and Nonqualified Stock Option Plan, 1986 Incentive
and Nonqualified Stock Option Plan and 1986 Nonemployees Nonqualified Stock
Option Plan (collectively, the "Family Stock Option Plans"). Under the
Agreement, each Family Option which is outstanding at the Effective Time,
whether or not exercisable, shall cease to represent a right to acquire shares
of Family Common Stock and shall be converted into an option to purchase shares
of Common Stock, and the Company shall assume each Family Option, in accordance
with the terms of the applicable Family Stock Option Plan and stock option or
other agreement by which it is evidenced, except that from and after the
Effective Time, (i) the Company and the Human Resources Committee of its Board
of Directors shall be substituted for Family and the committee of Family's Board
of Directors (including, if applicable, the entire Board of Directors of Family)
administering such Family Stock Option Plan, (ii) each Family Option assumed by
the Company may be exercised solely for shares of Common Stock, (iii) the number
of shares of Common Stock subject to such Family Option shall be equal to the
number of shares of Family Common Stock subject to such Family Option
immediately prior to the Effective Time multiplied by the Exchange Ratio,
provided that any fractional shares of Common Stock resulting from such
multiplication shall be rounded down to the nearest share, and (iv) the per
share exercise price under each such Family Option shall be adjusted by dividing
the per share exercise price under each such Family Option by the Exchange
Ratio, provided that such exercise price shall be rounded up to the nearest
cent. As of the date of the Agreement, there were Family Options to purchase an
aggregate of 233,606 shares of Family Common Stock outstanding at prices which
range from $3.33 per share to $17.50 share.
 
REPRESENTATIONS AND WARRANTIES
 
     In the Agreement each of the Company and Family made customary
representations and warranties relating to, among other things, (i) corporate
organization and similar corporate matters; (ii) capital structure; (iii)
authorization, execution, delivery, performance and enforceability of the
Agreement; (iv) the absence of material conflicts or violations with
organizational documents, applicable laws or material contracts or agreements;
(v) required regulatory approvals; (vi) the absence of a Material Adverse
Effect, as defined, since March 31, 1996; (vii) the absence of material
litigation; (viii) compliance with applicable laws; (ix) the accuracy of
documents filed with the Commission and banking authorities; (x) employee
benefit plans and related matters; (xi) tax returns and payment of taxes; (xii)
environmental matters; (xiii) brokers' and finders' fees; and (xiv) the accuracy
of information relating to it in the prospectus/joint proxy statement mailed to
shareholders of the Company and Family in connection with their consideration of
the Agreement at the Company Special Meeting and the Family Special Meeting,
respectively.
 
CONDITIONS TO THE MERGER
 
     The Agreement provides that consummation of the Merger is subject to the
satisfaction of certain conditions, or the waiver of such conditions by the
party or parties entitled to do so, at or before the Effective Time. Each of the
parties' obligations under the Agreement is subject to the following conditions:
(i) all corporate action (including without limitation approval by the requisite
votes of the shareholders of the Company and Family, which were obtained on
August 22, 1996) necessary to authorize the execution and
 
                                       21
<PAGE>   25
 
delivery of the Agreement and consummation of the transactions contemplated
thereby shall have been duly and validly taken; (ii) the receipt of all
necessary regulatory approvals and consents required to consummate the Merger by
any governmental authority, and the expiration of all notice periods and waiting
periods with respect thereto, provided, however, that no required approval or
consent shall be deemed to have been received if it shall include any condition
or requirement that, individually or in the aggregate, would so materially
reduce the economic or business benefits of the transactions contemplated by the
Agreement to the Company that had such condition or requirement been known the
Company, in its reasonable judgment, would not have entered into the Agreement;
(iii) none of the Company or Family or their respective subsidiaries shall be
subject to any statute, rule, regulation, order or decree which prohibits,
restricts or makes illegal the consummation of the Merger; (iv) the Registration
Statement on Form S-4 (the "Registration Statement") filed by the Company with
the Commission pursuant to the Agreement shall have become effective under the
Securities Act of 1933, as amended (the "Securities Act"), and the Company shall
have received all permits, authorizations or exemptions necessary under all
state securities laws to issue Common Stock in connection with the Merger, and
neither the Registration Statement nor any such permit, authorization or
exemption shall be subject to a stop order or threatened stop order by any
governmental authority; (v) the shares of Common Stock to be issued in
connection with the Merger shall have been approved for quotation on the Nasdaq
Stock Market's National Market; and (vi) each of the Company and Family shall
have received an opinion of its respective counsel to the effect that the Merger
qualifies as a reorganization within the meaning of Section 368 of the Code and,
in the case of Family, with respect to certain other related federal income tax
considerations.
 
     In addition to the foregoing conditions, the obligations of the Company and
Merger Corp. under the Agreement are conditioned upon (i) the accuracy in all
material respects as of the date of the Agreement and as of the Effective Time
of the representations and warranties of Family set forth in the Agreement,
except as to any representation or warranty which specifically relates to an
earlier date and except as otherwise contemplated by the Agreement; (ii) the
performance in all material respects of all covenants and obligations required
to be complied with and satisfied by Family; (iii) the receipt of a certificate
from specified officers of Family with respect to compliance with the conditions
relating to (i) and (ii) immediately above as set forth in the Agreement; (iv)
the receipt of an opinion from Family's legal counsel covering specified
matters; (v) any dissenting shares of Family Common Stock under Massachusetts
law shall constitute not more than 10% of the outstanding shares of Family
Common Stock prior to the Effective Time; (vi) the receipt of "comfort" letters
from the independent public accountants of Family as of specified dates; and
(vii) the receipt by the Company of such certificates of Family's officers or
others and such other documents to evidence fulfillment of the conditions
relating to Family as the Company may reasonably request. Any of the foregoing
conditions may be waived by the Company and Merger Corp.
 
     In addition to the other conditions set forth above, Family's obligations
under the Agreement are conditioned upon (i) the accuracy in all material
respects as of the date of the Agreement and as of the Effective Time of the
representations and warranties of the Company set forth in the Agreement, except
as to any representation or warranty which specifically relates to an earlier
date and except as otherwise contemplated by the Agreement; (ii) the performance
in all material respects of all covenants and obligations required to be
complied with and satisfied by the Company and Merger Corp.; (iii) the receipt
of a certificate from specified officers of the Company with respect to
compliance with the conditions relating to (i) and (ii) immediately above as set
forth in the Agreement; (iv) the receipt of an opinion from legal counsel to the
Company covering specified matters; and (v) the receipt by Family of such
certificates of the Company's or Merger Corp.'s officers or others and such
other documents to evidence fulfillment of the conditions relating to them as
Family may reasonably request. Any of the foregoing conditions may be waived by
Family.
 
REGULATORY APPROVALS
 
     Consummation of the Merger is subject to prior receipt of all required
approvals and consents of the Merger by all applicable federal and state
regulatory authorities. In order to consummate the Merger, the Company must
obtain the prior consent and approval, as applicable, of the FRB, the OTS, the
Superintendent and the Massachusetts Board of Bank Incorporation ("Massachusetts
Board"), the approval of which may not
 
                                       22
<PAGE>   26
 
be granted until it has received notice from the Massachusetts Housing
Partnership Fund ("MHPF") that the Company and the MHPF have made the
arrangements required by Massachusetts law.
 
     The Merger is subject to the prior approval of the FRB under Section 4 of
the BHCA, which requires the Company to provide the FRB written notice of the
Merger at least 60 days before its consummation. In connection with such notice,
the FRB shall consider whether the acquisition of Family by the Company can
reasonably be expected to produce benefits to the public such as greater
convenience, increased competition or gains in efficiency, that outweigh
possible adverse effects, such as undue concentration of resources, decreased or
unfair competition, conflicts of interest or unsound banking practices.
 
     The Merger is subject to the prior approval of the OTS under Section 10(e)
of the HOLA, and regulations of the OTS thereunder. The OTS may deny an
application by an acquiror to acquire control of a savings association if (i)
the OTS finds that the financial and managerial resources and future prospects
of the acquiror and the savings association would be detrimental to the savings
association or the insurance risk to the Federal Deposit Insurance Corporation
("FDIC") or (ii) the acquiror fails or refuses to furnish information requested
by the OTS. Pursuant to the applicable provisions of the HOLA and regulations
thereunder, the OTS may not approve an acquisition of control of a savings
association if (i) such transaction would result in a monopoly or would be in
furtherance of any combination or conspiracy to monopolize or attempt to
monopolize the business of banking in any part of the United States; (ii) the
effect of such transaction, in any section of the country, may be to
substantially lessen competition, or tend to create a monopoly, or in any other
manner to restrain trade, in each case unless the OTS finds that the
anticompetitive effects of the proposed transaction are clearly outweighed in
the public interests by the probable effect of the transaction in meeting the
convenience and needs of the community to be served; or (iii) the acquiror fails
to provide adequate assurances to the OTS that the acquiror will make available
to the OTS such information on the operations or activities of the acquiror and
any affiliate thereof as the OTS determines to be appropriate to determine and
enforce compliance with the HOLA. Consideration of the managerial resources of
an acquiror or savings association shall include consideration of the
competence, experience and integrity of the directors, officers and controlling
shareholders of the acquiror and the savings association.
 
     Consummation of the Merger also requires the approval of the Superintendent
under Part 10 of Title 9-B of the Maine Revised Statutes. The Superintendent
shall not approve an application for such a transaction unless he determines,
after a consideration of all relevant evidence, that it would contribute to the
financial strength and success of the applicant and promote the convenience and
advantage of the public. The factors to be considered by the Superintendent in
this regard are substantially similar to those to be considered by federal
banking agencies, as discussed above.
 
     The Merger also is subject to approval of the Massachusetts Board under
Sections 2 and 4 of Chapter 167A of the Massachusetts General Laws.
Massachusetts law requires that the Massachusetts Board find that the Merger
would not unreasonably affect competition among banking institutions and that it
would promote public convenience and advantage. In making such a determination,
the Massachusetts Board must consider, among other things, a showing of net new
benefits, including initial capital investments, job creation plans, consumer
and business services, commitments to maintain and open branch offices within
Family Bank's statutorily delineated local community, and such other matters as
the Massachusetts Board may deem necessary or advisable.
 
     In addition, Massachusetts law provides that the Massachusetts Board cannot
approve the Merger until it has received notice from the MHPF that arrangements
satisfactory to the MHPF have been made for the proposed acquiror to make 0.9
percent of its assets located in Massachusetts available for call by the MHPF
for a period of ten years for purposes of funding various affordable housing
programs. Massachusetts law provides that such funds shall bear interest at
rates approved by the Massachusetts Commissioner of Banks ("Massachusetts
Commissioner"), which shall be based upon the cost (not to include lost
opportunity costs) incurred in making funds available to the MHPF. Pursuant to
this requirement, Family Bank and the Company, as lender and guarantor,
respectively, will enter into a loan agreement with the MHPF pursuant to which
Family Bank will agree to make funds available for call by MHPF's Board.
 
                                       23
<PAGE>   27
 
     Under Massachusetts law, the Company also would be required to maintain,
for a period of two years following the consummation of the Merger, the asset
base of Family Bank at a level equal to or greater than the total assets of such
bank on the date of consummation, provided, however, that the Massachusetts
Commissioner may waive such asset retention requirement if, in his judgment,
economic conditions warrant such waiver. The Company has requested confirmation
from the Massachusetts Commissioner that this requirement does not apply to the
assets of Family Bank located in New Hampshire.
 
     Applications have been filed with applicable regulatory authorities for
approval of the Merger. Although neither the Company nor Family is aware of any
basis for disapproving the Merger, there can be no assurance that all requisite
approvals will be obtained, that such approvals will be received on a timely
basis or that such approvals will not impose conditions or requirements which,
individually or in the aggregate, would so materially reduce the economic or
business benefits of the transactions contemplated by the Agreement to the
Company that had such condition or requirement been known the Company, in its
reasonable judgment, would not have entered into the Agreement. If any such
condition or requirement is imposed, the Agreement permits the Board of
Directors of the Company to terminate the Agreement.
 
BUSINESS PENDING THE MERGER
 
     Pursuant to the Agreement, Family agreed that, except as contemplated by
the Agreement or with the prior written consent of the Company, during the
period from the date of the Agreement and continuing until the Effective Time it
and Family Bank shall carry on their respective businesses in the ordinary
course consistent with past practice. Pursuant to the Agreement, Family also
agreed to use all reasonable efforts to (i) preserve its business organization
and that of Family Bank intact, (ii) keep available to itself and the Company
the present services of the employees of Family and Family Bank and (iii)
preserve for itself and the Company the goodwill of the customers of Family and
Family Bank and others with whom business relationships exist. In addition,
under the terms of the Agreement, Family agreed not to take certain actions, nor
permit its subsidiaries to take certain actions, without the prior written
consent of the Company, which generally relate to various aspects of Family's
business and operations, qualification of the Merger as a reorganization within
the meaning of Section 368 of the Code and compliance with the representations
and warranties of Family contained in the Agreement.
 
     Pursuant to the Agreement, Family also agreed to not, and to cause its
subsidiaries not to, solicit or encourage inquiries or proposals with respect
to, furnish any information relating to, or participate in any negotiations or
discussions concerning, any acquisition, lease or purchase of all or a
substantial portion of the assets of, or any equity interest in, Family or any
of its subsidiaries, other than as contemplated by the Agreement, provided,
however, that the Board of Directors of Family may furnish such information or
participate in such negotiations or discussions if such Board of Directors,
after having consulted with and considered the advice of outside counsel, has
determined that the failure to do the same would cause the members of such Board
of Directors to breach their fiduciary duties under applicable law.
 
     Pursuant to the Agreement, the Company agreed that during the period from
the date of the Agreement to the Effective Time it shall continue to conduct its
business in a manner designed in its reasonable judgment to enhance the
long-term value of the Common Stock and the business prospects of the Company.
In addition, under the terms of the Agreement, the Company agreed not to take
certain actions, nor permit its significant subsidiaries to take certain
actions, without the prior written consent of Family, which generally relate to
actions which could impede or delay consummation of the Merger, qualification of
the Merger as a reorganization within the meaning of Section 368 of the Code and
compliance with the representations and warranties of the Company contained in
the Agreement.
 
EFFECTIVE TIME OF THE MERGER; TERMINATION AND AMENDMENT
 
     The effective time of the Merger shall be the date and time of the filing
of articles of merger with the Secretary of State of Maine pursuant to the Maine
Business Corporation Act and the Secretary of State of the Commonwealth of
Massachusetts pursuant to the Massachusetts Business Corporation Law, unless a
different date and time is specified as the effective time in such articles of
merger (the "Effective Time"). The
 
                                       24
<PAGE>   28
 
Effective Time shall be as set forth in such articles of merger, which will be
filed only after the receipt of all requisite regulatory approvals of the
Merger, approval of the Agreement by the requisite votes of the shareholders of
the Company and Family and the satisfaction or waiver of all other conditions to
the Merger set forth in the Agreement.
 
     A closing (the "Closing") shall take place immediately prior to the
Effective Time on the fifth business day, or under certain circumstances on the
first day which is at least two business days, following the satisfaction or
waiver (to the extent permitted) of all the conditions to consummation of the
Merger specified in the Agreement (other than the delivery of certificates,
opinions and other instruments and documents to be delivered at the Closing), or
on such other date as the parties may mutually agree upon.
 
     The Agreement may be terminated as follows: (i) at any time on or prior to
the Effective Time by the mutual consent in writing of the parties; (ii) at any
time on or prior to the Effective Time by either party in the event of a
material breach by the other party of any material covenant or agreement or
representation and warranty, in any case which would have a material adverse
effect, as defined, and which has not been cured within the time period
specified in the Agreement; (iii) at any time by any party in writing if any
application for any required federal or state regulatory approval has been
denied or is approved with any condition or requirement which would prevent
satisfaction of this condition to the Company's obligation to consummate the
Merger, and the time period for appeals and requests for reconsideration has
run; (iv) at any time by any party in writing if the shareholders of the Company
or Family fail to approve the Agreement at a meeting duly called for the
purpose, unless the failure of such occurrence is due to the failure of the
party seeking to terminate to perform or observe in any material respect its
agreements set forth in the Agreement; (v) by any party in writing in the event
that the Merger is not consummated by May 30, 1997, provided that this right to
terminate shall not be available to any party whose failure to perform an
obligation under the Agreement resulted in the failure of the Merger to be
consummated by such date; and (vi) by Family at any time during the five-day
period following the Pricing Period (as defined below) if the average of the
daily closing prices of a share of Common Stock, as reported on the Nasdaq Stock
Market's National Market, during the Pricing Period (the "Average Closing
Price") is less than $15.00, subject, however, to the following three sentences.
If Family elects to exercise its termination right pursuant to clause (vi)
above, it shall give written notice to the Company (which may be withdrawn by it
at any time during the aforementioned five-day period). During the five-day
period commencing with its receipt of such notice, the Company shall have the
option to increase the consideration to be received by the holders of Family
Common Stock under the Agreement by adjusting the Exchange Ratio to equal a
number (calculated to the nearest one-thousandth) obtained by dividing (x)
$18.90 by (y) the Average Closing Price. If the Company so elects within such
five-day period, it shall give prompt written notice to Family of such election
and the revised Exchange Ratio, whereupon no termination shall have occurred
pursuant to clause (vi) above and the Agreement shall remain in effect in
accordance with its terms (except as the Exchange Ratio shall have been so
modified). Under the Agreement, the term "Pricing Period" means the period of
ten consecutive trading days following the Determination Date and the term
"Determination Date" means the earlier of (x) the date on which the last
regulatory approval required to consummate the Merger is obtained and (y)
December 1, 1996.
 
     In the event of termination, the Agreement shall become null and void,
except that certain provisions thereof relating to expenses and confidentiality
shall survive any such termination and any such termination shall not relieve
any breaching party from liability for any willful breach of any covenant,
undertaking, representation or warranty giving rise to such termination.
 
     To the extent permitted under applicable law, the Agreement may be amended
or supplemented at any time by written agreement of the parties whether before
or after the approval of the shareholders of the Company or Family, provided
that after any such approval the Agreement may not be amended or supplemented in
a manner which modifies either the amount or form of the consideration to be
received by Family's shareholders or otherwise materially adversely affects the
shareholders of Family or the shareholders of the Company without further
approval by those shareholders who are so affected.
 
                                       25
<PAGE>   29
 
INTERESTS OF CERTAIN PERSONS IN THE MERGER
 
     Pursuant to the Agreement, the Company agreed (i) to take such action as is
necessary to cause one existing non-employee director of Family designated by
Family and acceptable to the Company to be elected as a director of the Company
as of the Effective Time and to nominate such person for re-election as a
director of the Company upon expiration of his initial term as a director of the
Company; (ii) to honor various contractual obligations of Family as of the date
of the Agreement, including (x) the employment agreements among Family, Family
Bank, FSB ("Family Bank"), a wholly-owned subsidiary of Family, and each of
David D. Hindle, President and Chief Executive Officer, George E. Fahey,
Executive Vice President and Chief Financial Officer, Ronald G. Trombley, Senior
Vice President, David J. LaFlamme, Senior Vice President, and Bruce Fenn, III,
Senior Vice President, (y) the supplemental executive retirement plan between
the Company and each of the above-named executive officers of Family and (z) the
split-dollar insurance agreements between Family Bank and each of Messrs.
Hindle, Fahey, LaFlamme and Trombley; and (iii) to continue rights to
indemnification and liability insurance for directors and officers of Family and
Family Bank for specified periods. Assuming the Merger were to be consummated as
of December 31, 1996, the aggregate amount of the lump sum severance payments
due to Messrs. Hindle, Fahey, Trombley, LaFlamme and Fenn pursuant to his
respective employment agreement would be approximately $550,000, $343,000,
$348,000, $306,000 and $278,000, respectively. Other than as set forth above, no
director or executive officer of the Company or Family has any direct or
indirect material interest in the Merger, except in the case of a director or
executive officer of Family insofar as ownership of Family Common Stock and
options to acquire Family Common Stock might be deemed such an interest.
 
CERTAIN EMPLOYEE MATTERS
 
     The Agreement provides that as soon as administratively practicable after
the Effective Time, the Company shall take all reasonable action so that
employees of Family and its subsidiaries shall be entitled to participate in the
Company's employee benefit plans of general applicability, and until such time
Family's employee benefit plans shall remain in effect, provided that no
employee of Family or a Family subsidiary who becomes an employee of the Company
and subject to the Company's medical insurance plans shall be excluded coverage
thereunder on the basis of a preexisting condition that was not also excluded
under Family's medical insurance plans, except to the extent such preexisting
condition was excluded from coverage under Family's medical insurance plans, in
which case the Agreement does not require coverage for such preexisting
condition. For purposes of determining eligibility to participate in and the
vesting of benefits under the Company's employee benefit plans, the Company
shall recognize years of service with Family and a Family subsidiary as such
service is recognized by Family and a Family subsidiary.
 
     All employees of Family or a Family subsidiary as of the Effective Time
shall become employees of the Company or a Company subsidiary as of the
Effective Time, provided that the Company or a Company subsidiary shall have no
obligation to continue the employment of any such person and nothing contained
in the Agreement shall give any employee of Family or a Family subsidiary a
right to continuing employment with the Company or a Company subsidiary after
the Effective Time. To the extent that the employment of any employee of Family
or a Family subsidiary (other than any employee who is party to an employment
agreement) is involuntarily terminated following the Effective Time, such
employee will be entitled to receive severance payments in accordance with, and
to the extent provided in, the Company's severance plan regarding the Merger.
For purposes of determining benefits under such severance plan, the Company
shall recognize years of service with Family or a Family subsidiary prior to the
Effective Time.
 
ACCOUNTING TREATMENT OF THE MERGER
 
     It is expected that the Merger will be accounted for as a purchase under
generally accepted accounting principles. Under the purchase method of
accounting, the acquired assets and liabilities as of the effective date of the
acquisition are recorded at their respective fair market values and added to
those of the Company. Financial statements of the Company issued after
consummation of the transaction reflect such values. Financial statements of the
Company issued before consummation of a transaction recorded under the purchase
method are not restated retroactively to reflect the historical financial
position or results of operations
 
                                       26
<PAGE>   30
 
of the acquired assets and liabilities. The unaudited pro forma financial
information contained in this Offer to Purchase has been prepared using the
purchase method to account for the Merger. See "Pro Forma Combined Consolidated
Financial Information."
 
EXPENSES OF THE MERGER
 
     The Agreement provides that each party thereto shall each bear and pay all
costs and expenses incurred by it in connection with the transactions
contemplated by the Agreement, including fees and expenses of its own financial
consultants, accountants and counsel, except that expenses of printing the
Registration Statement and the registration fee to be paid to the Commission in
connection therewith shall be shared equally between the Company and Family.
 
STOCK OPTION AGREEMENTS
 
     As an inducement and a condition to the Company's entering into the
Agreement, the Company and Family also entered into a Stock Option Agreement,
dated as of May 30, 1996 (the "Family Stock Option Agreement"), pursuant to
which Family, as issuer, granted the Company, as grantee, the option, upon the
occurrence of certain events (none of which has occurred as of the date hereof
to the best of the knowledge of the Company and Family), to purchase up to
832,000 shares of Family Common Stock, representing 19.9% of the outstanding
shares of Family Common Stock, at a price of $20.50 per share, subject to
adjustment in certain circumstances and termination within certain periods. As
an inducement and a condition to Family's entering into the Agreement, the
Company and Family also entered into a Stock Option Agreement, dated as of May
30, 1996 (the "Company Stock Option Agreement"), pursuant to which the Company,
as issuer, granted Family, as grantee, an option, upon the occurrence of certain
events (none of which has occurred as of the date hereof to the best of the
knowledge of the Company and Family), to purchase up to 1,500,000 shares of
Common Stock, representing approximately 6.0% of the outstanding shares of
Common Stock, at a price of $19.75 per share, subject to adjustment in certain
circumstances and termination within certain periods. With the exception of the
number and percentage of shares of common stock of the issuer subject to an
option and the per share price at which an option may be exercised, the terms of
the Family Stock Option Agreement and the Company Stock Option Agreement are
substantially identical.
 
     The Stock Option Agreements are intended to increase the likelihood that
the Merger will be consummated in accordance with the terms of the Agreement and
may have the effect of discouraging competing offers to the Merger.
 
     Copies of the Family Stock Option Agreement and the Company Stock Option
Agreement have been incorporated by reference in the Schedule 13E-4 of which
this Offer to Purchase is a part, and reference is made thereto for the complete
terms thereof. These agreements may be inspected or obtained in the manner set
forth under "Available Information."
 
CERTAIN REGULATORY CONSIDERATIONS
 
     Subject to application to and approval of the OTS (see "The
Merger -- Regulatory Approvals"), as a result of the Merger the Company will
become a savings and loan holding company under the HOLA subject to certain
regulation and supervision by the OTS (which will continue to be the primary
federal banking regulator of Family Bank). Such regulation and supervision of
the Company will be in addition to that of the FRB as a result of the Company's
status as a bank holding company under the BHCA. Set forth below is a brief
description of the regulation of savings and loan holding companies which also
are bank holding companies and which will be applicable to the Company upon
consummation of the Merger.
 
     REGISTRATION AND REPORTING REQUIREMENTS.  Savings and loan holding
companies are required to register as such with the OTS within 90 days after
becoming a savings and loan holding company. Each savings and loan holding
company, including subsidiary savings and loan holding companies, is required to
file an annual report with the OTS and quarterly current reports detailing
changes from the annual filing. Currently, no fees are required in connection
with the filing of these reports.
 
                                       27
<PAGE>   31
 
     ACTIVITIES LIMITATIONS.  In general, a savings and loan holding company
which holds only one savings institution subsidiary which meets a so-called
"qualified thrift lender test" set forth in the HOLA and regulations of the OTS
thereunder is not subject to activities limitations, whereas a savings and loan
holding company which holds more than one savings institution subsidiary, or
only one savings institution subsidiary which does not meet the "qualified
thrift lender" test, is subject to activities limitations which are comparable
to, but not identical with, the activities limitations which are applicable to
all bank holding companies under the BHCA. Pursuant to OTS regulations, the
activities limitations which are applicable to a savings and loan holding
company are not applicable to a company which is treated as a bank holding
company under the BHCA or any of its subsidiaries.
 
     RESTRICTIONS ON ACQUISITIONS.  Except under limited circumstances, savings
and loan holding companies are prohibited from acquiring, without prior approval
of the Director of the OTS, (i) control of any other savings institution or
savings and loan holding company or substantially all the assets thereof or (ii)
more than 5% of the voting shares of a savings institution or holding company
thereof which is not a subsidiary. Except with the prior approval of the
Director of the OTS, no director or officer of a savings and loan holding
company or person owning or controlling by proxy or otherwise more than 25% of
such company's stock, may acquire control of any savings institution, other than
a subsidiary savings institution, or of any other savings and loan holding
company.
 
     The Director of the OTS may approve acquisitions resulting in the formation
of a multiple savings and loan holding company which controls savings
institutions in more than one state only if (i) the multiple savings and loan
holding company involved controls a savings institution which operated a home or
branch office located in the state of the institution to be acquired as of March
5, 1987, (ii) the acquiror is authorized to acquire control of the savings
institution pursuant to the emergency acquisition provisions of the Federal
Deposit Insurance Act or (iii) the statutes of the state in which the
institution to be acquired is located specifically permit institutions to be
acquired by state-chartered savings institutions located in the state where the
acquiring entity is located (or by a holding company that controls such
state-chartered savings institutions).
 
     TRANSACTIONS WITH AFFILIATES.  Transactions between a savings institution
and its affiliates (including its parent holding company) are subject to
substantially the same restrictions as are applicable to transactions between a
bank and its affiliates. In this regard, a savings institution subsidiary is
subject to the restrictions set forth in Sections 23A and 23B of the Federal
Reserve Act and the additional restrictions set forth in Section 11(a) of the
HOLA, as implemented in regulations of the OTS thereunder.
 
     EXAMINATIONS.  Each savings and loan holding company and each subsidiary
thereof is subject to such examinations as the OTS may prescribe. The cost of
each examination (other than examinations of savings institutions) shall be
assessed against and paid by such holding company. The OTS shall, to the extent
feasible, use for these purposes reports filed with or examinations made by
other federal agencies or the appropriate state supervisory authority.
 
     The above discussion of the regulation of savings and loan holding
companies is not intended to be a complete description of such regulation and is
qualified in its entirety by reference to applicable statutes, regulations and
other regulatory pronouncements.
 
                                       28
<PAGE>   32
 
                                  THE COMPANY
 
GENERAL
 
     The Company is a Maine-chartered, multi-bank holding company registered
under the BHCA. As used in this Offer to Purchase, the term "the Company" refers
to such corporation and its subsidiaries, unless the context otherwise requires.
 
     The Company conducts business from its headquarters in Portland, Maine and
107 offices located throughout the States of Maine and New Hampshire. At June
30, 1996, the Company had consolidated assets of $4.4 billion, consolidated
deposits of $3.4 billion and consolidated shareholders' equity of $366.3
million. Based on total assets at June 30, 1996, the Company is the largest
independent bank holding company headquartered in the State of Maine and the
fifth largest independent bank holding company headquartered in New England.
 
     The Company offers a broad range of commercial and consumer banking
services and products and trust and investment advisory services through two
wholly-owned banking subsidiaries: Peoples Heritage Bank ("PHB") and BNH. PHB is
a Maine-chartered savings bank which operates 62 offices throughout Maine and,
through subsidiaries, engages in mortgage banking, financial planning and
equipment leasing activities. At June 30, 1996, PHB had consolidated assets of
$2.6 billion, consolidated deposits of $1.9 billion and consolidated
shareholder's equity of $196.7 million. BNH is a New Hampshire-chartered
commercial bank which operates 45 offices throughout New Hampshire. At June 30,
1996, BNH had consolidated assets of $1.8 billion, consolidated deposits of $1.5
billion and consolidated shareholder's equity of $140.9 million. Each of PHB and
BNH is a member of the BIF administered by the FDIC.
 
     The principal executive offices of the Company are located at One Portland
Square, Portland, Maine 04112-9540, and its telephone number is (207) 761-8500.
 
RECENT ACQUISITIONS OF THE COMPANY
 
     On April 2, 1996, the Company acquired all of the outstanding shares of
capital stock of BNHC, a New Hampshire-based bank holding company for BNH, by
exchanging two shares of Common Stock for each outstanding share of BNHC Common
Stock. The acquisition of BNHC was accounted for as a pooling of interests for
accounting and financial reporting purposes and, as a result, all financial
information relating to the Company contained herein reflects the combined
financial position and results of operations of the Company and BNHC as if the
acquisition of BNHC had taken place prior to the periods covered by such
financial information. For additional information in this regard, reference is
made to the supplemental consolidated financial statements and related financial
information of the Company contained in the Report on Form 8-K filed by the
Company on July 2, 1996. See "Available Information." These financial statements
do not extend through the date of consummation of the acquisition of BNHC;
however, they will become the historical consolidated financial statements of
the Company after financial statements covering the date of consummation of the
business combination are issued.
 
     Subsequent to the acquisition of BNHC, the Company merged its other New
Hampshire-based banking subsidiary -- The First National Bank of Portsmouth
("FNBP") -- into BNH under the pooling-of-interests method of accounting
effective after the close of business on June 28, 1996.
 
     On February 16, 1996, the Company purchased five branch offices of Fleet
Bank NH which are located in central and southern New Hampshire and which were
divested by Fleet Bank NH in connection with the merger of Fleet Financial
Group, Inc. and Shawmut National Corporation. The purchase resulted in the
Company's acquisition of approximately $218.3 million of loans, including $178.6
million of single-family residential mortgage loans, and its assumption of
$160.9 million of deposits.
 
                                       29
<PAGE>   33
 
                                     FAMILY
 
     Family is a Massachusetts-chartered savings and loan holding company
registered under the HOLA. As used in this Offer to Purchase, the term "Family"
refers to such corporation and its subsidiaries, unless the context otherwise
requires.
 
     Family offers a broad range of commercial and retail financial services,
including transaction accounts, savings deposits, residential and commercial
mortgages and other commercial and consumer loans, through Family Bank, a
wholly-owned subsidiary of Family. At June 30, 1996, Family had consolidated
assets of $926.6 million, consolidated deposits of $761.6 million and
consolidated shareholders' equity of $70.0 million.
 
     Family Bank operates 17 banking offices in the Merrimack Valley area of
Greater Haverhill and Greater Lowell, Massachusetts and six offices in southern
New Hampshire. Family Bank became a federally-chartered savings bank regulated
by the OTS in 1995 when Family combined its two formerly state-chartered savings
banks to allow its customers to bank at its offices in either Massachusetts or
New Hampshire. Family Bank is a member of the BIF administered by the FDIC.
 
     The principal executive offices of Family are located at 153 Merrimack
Street, Haverhill, Massachusetts, and its telephone number is (508) 374-1911.
 
                                       30
<PAGE>   34

<TABLE>
              SELECTED CONSOLIDATED FINANCIAL DATA OF THE COMPANY
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
     The following selected supplemental consolidated financial data for the two
years ended December 31, 1995 is derived from the audited supplemental
consolidated financial statements of the Company which give retroactive effect
to the Company's acquisition of BNHC in April 1996, which financial statements
are contained in the Report on Form 8-K filed by the Company on July 2, 1996;
and the following selected consolidated financial data for the six months ended
June 30, 1996 and 1995 is derived from unaudited consolidated financial
statements which give retroactive effect to the same, which financial statements
are included in the Company's Quarterly Report on Form 10-Q for the quarter
ended June 30, 1996. The unaudited consolidated financial statements include all
adjustments, consisting of normal recurring accruals, which the Company
considers necessary for a fair presentation of the financial position and the
results of operations for these periods. Operating results for the six months
ended June 30, 1996 are not necessarily indicative of the results that may be
expected for any other interim period or the entire year ending December 31,
1996. The selected consolidated financial information set forth below is
qualified by reference to the above-referenced Form 8-K and Form 10-Q (which may
be inspected or obtained in the manner set forth under "Available Information")
and the financial statements and related notes contained therein.
 
<CAPTION>
                                                                               DECEMBER 31,
                                                          JUNE 30,      --------------------------
                                                            1996           1995           1994
                                                         -----------    -----------    -----------
<S>                                                      <C>            <C>            <C>
BALANCE SHEET DATA:
Total assets...........................................  $ 4,371,709    $ 4,058,126    $ 3,737,906
Debt and equity securities, net........................      757,453        766,648        719,194
Total loans, net(1)....................................    3,051,435      2,717,608      2,575,902
Goodwill and other intangibles.........................       38,849         22,792         20,713
Deposits...............................................    3,383,083      3,197,138      2,885,845
Borrowings.............................................      571,324        456,932        505,347
Shareholders' equity...................................      366,260        354,925        304,439
Nonperforming assets(2)................................       49,776         56,752         78,339
Allowance for loan and lease losses....................       63,654         60,975         63,675
Book value per share...................................        14.55          14.16          12.26
Tangible book value per share..........................        13.01          13.25          11.42
</TABLE>
 
<TABLE>
<CAPTION>
                                                    SIX MONTHS ENDED         YEAR ENDED DECEMBER
                                                        JUNE 30,                     31,
                                                  ---------------------     ---------------------
                                                    1996         1995         1995         1994
                                                  --------     --------     --------     --------
<S>                                               <C>          <C>          <C>          <C>
OPERATIONS DATA:
Interest and dividend income....................  $164,839     $146,270     $305,849     $256,597
Interest expense................................    72,869       63,696      134,895      108,002
                                                  --------     --------     --------     --------
Net interest income.............................    91,970       82,574      170,954      148,595
Provision for loan losses.......................       900        2,070        4,230        3,374
                                                  --------     --------     --------     --------
Net interest income after provision for loan
  losses........................................    91,070       80,504      166,724      145,221
                                                  --------     --------     --------     --------
Net securities gains (losses)...................       504         (149)         116         (254)
Other noninterest income........................    18,161       14,809       31,301       27,880
Noninterest expense.............................    74,168       63,149      130,280      125,137
                                                  --------     --------     --------     --------
Income before income tax expense................    35,567       32,015       67,861       47,710
Income tax expense..............................    12,818       10,744       23,375       13,662
                                                  --------     --------     --------     --------
Net income......................................  $ 22,749     $ 21,271     $ 44,486     $ 34,048
                                                  ========     ========     ========     ========
Net income per share............................     $0.90        $0.87        $1.80        $1.37
</TABLE>
 
                                       31
<PAGE>   35
 
<TABLE>
<CAPTION>
                                                              AT OR FOR THE        AT OR FOR THE
                                                             SIX MONTHS ENDED       YEAR ENDED
                                                                 JUNE 30,          DECEMBER 31,
                                                             ----------------     ---------------
                                                             1996       1995      1995      1994
                                                             -----      -----     -----     -----
<S>                                                          <C>        <C>       <C>       <C>
OTHER DATA(3):
Return on average assets...................................   1.07%      1.14%     1.16%     0.94%
Return on average equity(4)................................  12.61      13.48     13.53     11.42
Average equity to average assets(4)........................   8.52       8.49      8.55      8.21
Regulatory capital ratios at end of period
  Tier I leverage..........................................   7.66       8.01      8.33      7.80
  Total risk-based.........................................  13.08      13.67     14.15     13.76
Nonperforming assets as a percent of total assets at end of
  period(2)................................................   1.14       1.81      1.40      2.10

<FN> 
- ---------------
(1) Does not include loans held for sale.
 
(2) Nonperforming assets consist of nonperforming loans, other real estate owned
    and repossessions, net of related reserves where appropriate. Nonperforming
    loans consist of non-accrual loans, accruing loans 90 days or more overdue
    and troubled debt restructurings.
 
(3) With the exception of end of period ratios, all ratios are based on average
    daily balances during the indicated periods and are annualized where
    appropriate.
 
(4) Average equity excludes the effect of unrealized gains or losses on
    securities available for sale.
  
</TABLE>

                                       32
<PAGE>   36
 
             PRO FORMA COMBINED CONSOLIDATED FINANCIAL INFORMATION
 
     The following unaudited pro forma combined condensed consolidated balance
sheets present the combined balance sheets of the Company and Family, assuming
that each of the Offer and the Merger was consummated as of the dates indicated,
and the following unaudited pro forma combined condensed consolidated statements
of operations present the combined consolidated statements of operations of the
Company and Family, assuming that each of the Offer and the Merger was
consummated as of the beginning of the indicated periods. Certain insignificant
reclassifications have been made in the case of the pro forma information
relating to Family to conform to the pro forma information relating to the
Company.
 
     Pro forma information relating to the Offer assumes that (i) 2,500,000
shares of Common Stock are purchased pursuant to the Offer at a Purchase Price
of $22.50 per Share, which is the mid-point between the maximum and minimum
Purchase Price at which Shares may be acquired pursuant to the Offer, and (ii)
expenses related to the Offer amount to approximately $335,000. The Company does
not believe that the pro forma information relating to the Offer would be
materially different than presented if the actual Purchase Price is such maximum
or minimum Purchase Price.
 
     The Merger will be accounted for under the purchase method of accounting.
For a description of the purchase method of accounting, see "The
Merger -- Accounting Treatment of the Merger." The effect of reorganization and
restructuring charges in connection with the Merger has been reflected in the
pro forma combined condensed consolidated balance sheets; however, because the
charges are nonrecurring, they have not been reflected in the pro forma combined
condensed consolidated statements of operations. The pro forma financial data
does not give effect to anticipated cost savings in connection with the Merger.
 
     The pro forma financial information should be read in conjunction with the
selected consolidated financial data of the Company included elsewhere herein.
The pro forma information presented is not necessarily indicative of the
financial position of the Company that would have resulted had the Offer and the
Merger been consummated at the dates indicated or the results of operations of
the Company that would have resulted had the Offer and the Merger been
consummated at the beginning of the indicated periods, nor is the pro forma
information necessarily indicative of the future financial position or results
of operations of the Company.
 
                                       33
<PAGE>   37
 
                             THE COMPANY AND FAMILY
<TABLE>
            PRO FORMA COMBINED CONDENSED CONSOLIDATED BALANCE SHEET
                                 JUNE 30, 1996
                                  (UNAUDITED)
                       (IN THOUSANDS, EXCEPT SHARE DATA)
 
<CAPTION>
                                                                                                               THE COMPANY
                                                                                                                   AND
                                                                                                                 FAMILY
                                                                     THE COMPANY                                COMBINED
                                                THE         THE          AND                   PRO FORMA         AND THE
                                              COMPANY      OFFER      THE OFFER     FAMILY    ADJUSTMENTS         OFFER
                                             ----------   --------   -----------   --------   -----------      -----------
<S>                                          <C>          <C>        <C>           <C>          <C>            <C>
ASSETS
Cash and due from banks....................  $  234,481   $     --   $  234,481    $ 38,866     $     --       $  273,347
Federal funds sold.........................      32,500         --       32,500          --           --           32,500
Securities available for sale at market
  value....................................     757,453    (56,585)     700,868     394,571           --        1,095,439
Loans held for sale........................      65,957         --       65,957      10,863           --           76,820
Loans and leases (net of deferred fees)....   3,115,089         --    3,115,089     453,435        2,780(1)     3,571,304
Less: Allowance for loan and lease
  losses...................................     (63,654)        --      (63,654)     (6,760)          --          (70,414)
                                             ----------   --------   ----------    --------     --------       ----------
         Net loans and leases..............   3,051,435         --    3,051,435     446,675        2,780        3,500,890
                                             ----------   --------   ----------    --------     --------       ----------
Premises and equipment.....................      57,357         --       57,357      12,298           99(2)        69,754
Goodwill and other intangibles.............      38,849         --       38,849       5,658       36,424(3)        80,931
Mortgage servicing rights..................      26,326         --       26,326          83        4,217(4)        30,626
Other real estate and repossessed assets
  owned....................................      11,349         --       11,349       3,659           --           15,008
Deferred income taxes......................      32,194         --       32,194       4,051        2,740(5)        38,985
Interest and dividends receivable..........      29,635         --       29,635       5,974           --           35,609
Other assets...............................      34,173         --       34,173       3,916           --           38,089
                                             ----------   --------   ----------    --------     --------       ----------
         Total assets......................  $4,371,709   $(56,585)  $4,315,124    $926,614     $ 46,260       $5,287,998
                                             ==========   ========   ==========    ========     ========       ==========
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
    Regular savings........................  $  598,386   $     --   $  598,386    $178,499     $     --       $  776,885
    Money market access accounts...........     508,919         --      508,919      61,632           --          570,551
    Certificates of deposit................   1,443,205         --    1,443,205     342,380       (1,913)(6)    1,783,672
    NOW accounts...........................     366,664         --      366,664      91,439           --          458,103
    Demand deposits........................     465,909         --      465,909      87,601           --          553,510
                                             ----------   --------   ----------    --------     --------       ----------
                                              3,383,083         --    3,383,083     761,551       (1,913)       4,142,721
                                             ----------   --------   ----------    --------     --------       ----------
Securities sold under repurchase
  agreements...............................     149,417         --      149,417       3,799           --          153,216
Borrowings from the Federal Home Loan Bank
  of Boston................................     401,442         --      401,442      69,932        2,079(7)       473,453
Other borrowings...........................      20,465         --       20,465          --           --           20,465
Deferred income taxes......................      10,934         --       10,934         230        3,783(8)        14,947
Other liabilities..........................      40,108         --       40,108      21,150        4,960(9)        66,218
                                             ----------   --------   ----------    --------     --------       ----------
         Total liabilities.................   4,005,449         --    4,005,449     856,662        8,909        4,871,020
                                             ----------   --------   ----------    --------     --------       ----------
Shareholders' equity:
  Preferred Stock..........................          --         --           --          --           --               --
  Common Stock:
    The Company............................         256         --          256          --           54(10)          310
    Family.................................          --         --           --         562         (562)(10)          --
Paid in capital............................     224,268         --      224,268      30,009       77,240(10)      331,517
Retained earnings..........................     149,175         --      149,175      50,043      (50,043)(10)     149,175
Net unrealized gain (loss) on securities
  available for sale, net of taxes.........      (1,159)        --       (1,159 )    (1,574)       1,574(10)       (1,159 )
Treasury stock at cost.....................      (6,280)   (56,585)     (62,865 )    (9,055)       9,055(10)      (62,865 )
Unearned compensation -- ESOP..............          --         --           --         (33)          33(10)           --
                                             ----------   --------   ----------    --------     --------       ----------
         Total shareholders' equity........     366,260    (56,585)     309,675      69,952       37,351          416,978
                                             ----------   --------   ----------    --------     --------       ----------
         Total liabilities and
           shareholders' equity............  $4,371,709   $(56,585)  $4,315,124    $926,614     $ 46,260       $5,287,998
                                             ==========   ========   ==========    ========     ========       ==========
Book value per share.......................  $    14.55              $    13.66                                $    14.83
                                             ==========              ==========                                ==========
Tangible book value per share..............  $    13.01              $    11.94                                $    11.96
                                             ==========              ==========                                ==========
</TABLE>
 
                                       34
<PAGE>   38
 
                             THE COMPANY AND FAMILY
 
            PRO FORMA COMBINED CONDENSED CONSOLIDATED BALANCE SHEET
                               DECEMBER 31, 1995
                                  (UNAUDITED)
                       (IN THOUSANDS, EXCEPT SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                                          THE COMPANY
                                                                                                              AND
                                                                     THE                                    FAMILY
                                                                   COMPANY                                 COMBINED
                                             THE         THE         AND                   PRO FORMA        AND THE
                                           COMPANY      OFFER     THE OFFER     FAMILY    ADJUSTMENTS        OFFER
                                          ----------   --------   ----------   --------   -----------     -----------
<S>                                       <C>          <C>        <C>          <C>        <C>             <C>
ASSETS
Cash and due from banks.................  $  190,436   $     --   $  190,436   $ 28,449    $      --      $  218,885
Federal funds sold......................     100,255         --      100,255      9,505           --         109,760
Securities available for sale at market
  value.................................     766,648    (56,585)     710,063    357,757           --       1,067,820
Loans held for sale.....................      70,979         --       70,979      8,056           --          79,035
Loans and leases (net of deferred
  fees).................................   2,778,583         --    2,778,583    457,626        2,780(1)    3,238,989
Less: Allowance for loan and lease
  losses................................     (60,975)        --      (60,975)    (6,427)          --         (67,402 )
                                          ----------   --------   ----------   --------     --------      ----------
         Net loans and leases...........   2,717,608         --    2,717,608    451,199        2,780       3,171,587
                                          ----------   --------   ----------   --------     --------      ----------
Premises and equipment..................      56,021         --       56,021     12,417           99(2)       68,537
Goodwill and other intangibles..........      22,792         --       22,792      6,073       36,424(3)       65,289
Mortgage servicing rights...............      20,309         --       20,309         83        4,217(4)       24,609
Other real estate and repossessed assets
  owned.................................      14,232         --       14,232      3,430           --          17,662
Deferred income taxes...................      32,972         --       32,972      2,361        2,740(5)       38,073
Interest and dividends receivable.......      30,726         --       30,726      5,647           --          36,373
Other assets............................      35,148         --       35,148      7,190           --          42,338
                                          ----------   --------   ----------   --------     --------      ----------
         Total assets...................  $4,058,126   $(56,585)  $4,001,541   $892,167    $  46,260      $4,939,968
                                          ==========   ========   ==========   ========     ========      ==========
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Regular savings.......................  $  557,896   $     --   $  557,896   $172,784    $      --      $  730,680
  Money market access accounts..........     490,575         --      490,575     63,772           --         554,347
  Certificates of deposit...............   1,363,095         --    1,363,095    335,051       (1,913)(6)   1,696,233
  NOW accounts..........................     351,481         --      351,481     82,529           --         434,010
  Demand deposits.......................     434,091         --      434,091     79,881           --         513,972
                                          ----------   --------   ----------   --------     --------      ----------
                                           3,197,138         --    3,197,138    734,017       (1,913)      3,929,242
                                          ----------   --------   ----------   --------     --------      ----------
Federal funds purchased.................       1,500         --        1,500         --           --           1,500
Securities sold under repurchase
  agreements............................     180,957         --      180,957      3,338           --         184,295
Borrowings from the Federal Home Loan
  Bank of Boston........................     252,446         --      252,446     72,195        2,079(7)      326,720
Other borrowings........................      22,029         --       22,029         --           --          22,029
Deferred income taxes...................      12,577         --       12,577      1,598        3,783(8)       17,958
Other liabilities.......................      36,554         --       36,554     12,323        4,960(9)       53,837
                                          ----------   --------   ----------   --------     --------      ----------
         Total liabilities..............   3,703,201         --    3,703,201    823,471        8,909       4,535,581
                                          ----------   --------   ----------   --------     --------      ----------
Shareholders' equity:
  Preferred Stock.......................          --         --           --         --           --              --
  Common Stock:
    The Company.........................         256         --          256         --           54(10)         310
    Family..............................          --         --                     562         (562)(10)         --
Paid in capital.........................     224,268         --      224,268     30,018       75,975(10)     330,261
Retained earnings.......................     134,443         --      134,443     47,153      (47,153)(10)    134,443
Net unrealized gain (loss) on securities
  available for sale, net of taxes......       3,763         --        3,763        954         (954)(10)      3,763
Treasury stock at cost..................      (7,805)   (56,585)     (64,390)    (9,917)       9,917(10)     (64,390 )
Unearned compensation -- ESOP...........          --         --           --        (74)          74(10)          --
                                          ----------   --------   ----------   --------     --------      ----------
         Total shareholders' equity.....     354,925    (56,585)     298,340     68,696       37,351         404,387
                                          ----------   --------   ----------   --------     --------      ----------
         Total liabilities and
           shareholders' equity.........  $4,058,126   $(56,585)  $4,001,541   $892,167    $  46,260      $4,939,968
                                          ==========   ========   ==========   ========     ========      ==========
Book value per share....................      $14.16                  $13.22                                  $14.53
                                               -----                   -----                                  ------
                                               -----                   -----                                  ------
Tangible book value per share...........      $13.25                  $12.21                                  $12.18
                                               -----                   -----                                  ------
                                               -----                   -----                                  ------
</TABLE>
 
                                       35
<PAGE>   39
 
                             THE COMPANY AND FAMILY
 
                   PRO FORMA COMBINED CONDENSED CONSOLIDATED
                            STATEMENT OF OPERATIONS
                         SIX MONTHS ENDED JUNE 30, 1996
                                  (UNAUDITED)
                       (IN THOUSANDS, EXCEPT SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                                                              THE COMPANY
                                                                       THE                                        AND
                                                                     COMPANY                                    FAMILY
                                                                       AND                                     COMBINED
                                              THE          THE         THE                     PRO FORMA        AND THE
                                            COMPANY       OFFER       OFFER       FAMILY      ADJUSTMENTS        OFFER
                                            --------     -------     --------     -------     -----------     -----------
<S>                                         <C>          <C>         <C>          <C>         <C>             <C>
Interest and dividend income:
  Interest and fees on loans and leases...  $139,222     $    --     $139,222     $19,805       $  (278)(11)   $ 158,749
  Interest on mortgage-backed
    investments...........................     7,507          --        7,507       9,092            --           16,599
  Interest on other investments...........    17,198      (1,768)      15,430       2,445            --           17,875
  Dividends on equity securities..........       912          --          912         264            --            1,176
                                            --------     -------     --------     -------       -------         --------
    Total interest and dividend income....   164,839      (1,768)     163,071      31,606          (278)         194,399
                                            --------     -------     --------     -------       -------         --------
Interest expense:
  Interest on deposits....................    59,356          --       59,356      12,911           478(12)       72,745
  Interest on borrowed funds..............    13,513          --       13,513       2,039          (520)(13)      15,032
                                            --------     -------     --------     -------       -------         --------
    Total interest expense................    72,869          --       72,869      14,950           (42)          87,777
                                            --------     -------     --------     -------       -------         --------
    Net interest income...................    91,970      (1,768)      90,202      16,656          (236)         106,622
Provision for loan losses.................       900          --          900         500            --            1,400
                                            --------     -------     --------     -------       -------         --------
    Net interest income after provision
      for loan losses.....................    91,070      (1,768)      89,302      16,156          (236)         105,222
                                            --------     -------     --------     -------       -------         --------
Noninterest income:
  Mortgage banking services...............     6,535          --        6,535         408          (301)(14)       6,642
  Customer services.......................     6,916          --        6,916       2,180            --            9,096
  Trust and investment advisory
    services..............................     3,524          --        3,524         102            --            3,626
  Loan related services...................       906          --          906          55            --              961
  Net securities gains....................       504          --          504         144            --              424
  Other noninterest income................       280          --          280         223            --              727
                                            --------     -------     --------     -------       -------         --------
                                              18,665          --       18,665       3,112          (301)          21,476
                                            --------     -------     --------     -------       -------         --------
Noninterest expenses:
  Salaries and employee benefits..........    35,631          --       35,631       5,895            --           41,526
  Occupancy...............................     6,399          --        6,399         970             2(15)        7,371
  Data processing.........................     5,769          --        5,769         511            --            6,280
  Equipment...............................     3,991          --        3,991         988            --            4,979
  Advertising and marketing...............     1,999          --        1,999         700            --            2,699
  Deposit and other assessments...........       669          --          669         212            --              881
  Collection and carrying costs of
    nonperforming assets..................       882          --          882         145            --            1,027
  Merger expenses.........................     5,105          --        5,105         533            --            5,638
  Other noninterest expenses..............    13,723          --       13,723       3,074         1,214(16)       18,011
                                            --------     -------     --------     -------       -------         --------
                                              74,168          --       74,168      13,028         1,216           88,412
                                            --------     -------     --------     -------       -------         --------
Income before income tax..................    35,567      (1,768)      33,799       6,240        (1,753)          38,286
Applicable income tax.....................    12,818        (601)      12,217       2,450          (226)(17)      14,441
                                            --------     -------     --------     -------       -------         --------
    Net income............................  $ 22,749     $(1,167)    $ 21,582     $ 3,790       $(1,527)       $  23,845
                                            ========     =======     ========     =======       =======         ========
Net income per share......................     $0.90                    $0.95                                      $0.85
Average shares outstanding................25,149,123               22,649,123                                 28,074,208
</TABLE>
 
                                       36
<PAGE>   40
 
                             THE COMPANY AND FAMILY
 
                   PRO FORMA COMBINED CONDENSED CONSOLIDATED
                            STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1995
                                  (UNAUDITED)
                       (IN THOUSANDS, EXCEPT SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                       THE                                    THE COMPANY
                                                                     COMPANY                                  AND FAMILY
                                                                       AND                                     COMBINED
                                              THE          THE         THE                     PRO FORMA        AND THE
                                            COMPANY       OFFER       OFFER       FAMILY      ADJUSTMENTS        OFFER
                                            --------     -------     --------     -------     -----------     -----------
<S>                                         <C>          <C>         <C>          <C>         <C>             <C>
Interest and dividend income:
  Interest and fees on loans and leases...  $253,787     $    --     $253,787     $40,207       $  (556)(11)   $ 293,438
  Interest on mortgage-backed
    investments...........................    12,627          --       12,627      12,285            --           24,912
  Interest on other investments...........    37,521      (3,537)      33,984       6,667            --           40,651
  Dividends on equity securities..........     1,914          --        1,914         825            --            2,739
                                            --------     -------     --------     -------       -------         --------
    Total interest and dividend income....   305,849      (3,537)     302,312      59,984          (556)         361,740
                                            --------     -------     --------     -------       -------         --------
Interest expense:
  Interest on deposits....................   108,209          --      108,209      24,860           957(12)      134,026
  Interest on borrowed funds..............    26,686          --       26,686       2,872        (1,039)(13)      28,519
                                            --------     -------     --------     -------       -------         --------
    Total interest expense................   134,895          --      134,895      27,732           (82)         162,545
                                            --------     -------     --------     -------       -------         --------
    Net interest income...................   170,954      (3,537)     167,417      32,252          (474)         199,195
Provision for loan losses.................     4,230          --        4,230       1,150            --            5,380
                                            --------     -------     --------     -------       -------         --------
    Net interest income after provision
      for loan losses.....................   166,724      (3,537)     163,187      31,102          (474)         193,815
                                            --------     -------     --------     -------       -------         --------
Noninterest income:
  Mortgage banking services...............    10,849          --       10,849       1,025          (602)(14)      11,272
  Customer services.......................    11,908          --       11,908       3,465            --           15,373
  Trust and investment advisory
    services..............................     5,850          --        5,850         200            --            6,050
  Loan related services...................     1,907          --        1,907         199            --            2,106
  Net securities gains....................       116          --          116         979            --            1,095
  Other noninterest income................       787          --          787         313            --            1,100
                                            --------     -------     --------     -------       -------         --------
                                              31,417          --       31,417       6,181          (602)          36,996
                                            --------     -------     --------     -------       -------         --------
Noninterest expenses:
  Salaries and employee benefits..........    67,472          --       67,472      10,775            --           78,247
  Occupancy...............................    10,574          --       10,574       1,951             3(15)       12,528
  Data processing.........................     8,924          --        8,924       1,052            --            9,976
  Equipment...............................     6,844          --        6,844       1,909            --            8,753
  Advertising and marketing...............     4,642          --        4,642         749            --            5,391
  Deposit and other assessments...........     4,497          --        4,497         845            --            5,342
  Collection and carrying costs of
    nonperforming assets..................     2,595          --        2,595         397            --            2,992
  Merger expenses.........................     4,958          --        4,958          --            --            4,958
  Other noninterest expenses..............    19,774          --       19,774       6,024         2,428(16)       28,226
                                            --------     -------     --------     -------       -------         --------
                                             130,280          --      130,280      23,702         2,431          156,413
                                            --------     -------     --------     -------       -------         --------
Income before income tax..................    67,861      (3,537)      64,324      13,581        (3,507)          74,398
Applicable income tax.....................    23,375      (1,203)      22,172       5,582          (453)(17)      27,301
                                            --------     -------     --------     -------       -------         --------
    Net income............................  $ 44,486     $(2,334)    $ 42,152     $ 7,999       $(3,054)       $  47,097
                                            ========     =======     ========     =======       =======         ========
Net income per share......................     $1.80                    $1.90                                      $1.71
Average shares outstanding................24,696,393               22,196,393                                 27,614,059
</TABLE>
 
                                       37
<PAGE>   41
 
    NOTES TO PRO FORMA COMBINED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
 
 (1) Reflects adjustment of Family's loan portfolio to estimated fair value.
 
 (2) Reflects adjustment of Family's premises and equipment to estimated fair
     value.
 
 (3) Reflects the excess of the purchase price of Family over the fair value of
     the net assets acquired (goodwill) after reflecting the adjustments
     described in Notes 1-2 and 4-9.
 
 (4) Reflects the estimated fair value of Family's mortgage servicing portfolio.
 
 (5) Reflects adjustment related to the exercise of the Family Options referred
     to in Note 10 and the tax effect of certain related purchase accounting
     adjustments.
 
 (6) Reflects adjustment of Family's certificates of deposit to fair value.
 
 (7) Reflects adjustment of Family's FHLB advances to fair value.
 
 (8) Reflects tax effect of certain purchase accounting adjustments.
 
 (9) Reflects $4.96 million of estimated one-time reorganization and
     restructuring costs related to the Merger. Such costs include estimated
     investment banking and other professional fees, severance costs associated
     with expected consolidations following the Merger, stock issuance costs and
     miscellaneous other costs. The effect of the one-time charges has been
     reflected in the pro forma consolidated balance sheet data but not in the
     pro forma operations data because it is nonrecurring.
 
(10) Reflects elimination of certain Family shareholder equity accounts and
     adjustment of paid-in capital and common stock to reflect the market value
     of the Common Stock to be issued in the Merger. The purchase price is based
     on exchanging 1.26 shares of Common Stock for (i) each outstanding share of
     Family Common Stock as of June 30, 1996 and (ii) the incremental number of
     shares of Family Common Stock (x) issued upon exercise of outstanding
     Family Options between June 30, 1996 and August 31, 1996, (y) issuable upon
     exercise of outstanding Family Options which are scheduled to expire in
     accordance with their terms on or prior to December 31, 1996 and (z)
     issuable upon exercise of vested Family Options held by employees of Family
     who will be leaving Family prior to December 31, 1996 (collectively, the
     "Current Family Options"), in each case at the per share closing price of
     the Common Stock ($19.75) on May 30, 1996, the last business day preceding
     public announcement of the Agreement. Shares issuable upon the exercise of
     Family Options which are not included in the foregoing are not included in
     the number of outstanding shares of Family Common Stock on the assumption
     that all such options will become equivalent options to purchase Common
     Stock.
 
      The estimated total market value of Common Stock to be issued in
      connection with the Merger is calculated as follows:
 
<TABLE>
     <S>                                                                           <C>
     Number of shares of Family Common Stock outstanding on June 30, 1996........   4,215,211
     Incremental shares of Family Common Stock issued or issuable upon exercise
       of the Current Family Options.............................................      96,735
                                                                                   ----------
     Total assumed number of outstanding shares of Family Common Stock...........   4,311,946
     Exchange Ratio..............................................................        1.26
                                                                                   ----------
     Total number of shares of Common Stock to be issued in the Merger...........   5,433,052
     Market price per share of Common Stock on May 30, 1996......................  $    19.75
                                                                                   ----------
     Total market value of the Common Stock to be issued in the Merger (in
       thousands)................................................................  $  107,303
                                                                                   ==========
</TABLE>
 
(11) Reflects accretion of the premium on loans and leases over a five-year
     period.
 
(12) Reflects amortization of the premium on deposits over a two-year period.
 
(13) Reflects accretion of the discount on borrowings over a two-year period.
 
(14) Reflects amortization of mortgage servicing rights resulting from the
     acquisition of Family over a seven-year period.
 
                                       38
<PAGE>   42
 
(15) Reflects amortization of adjustment to fair value of premises and equipment
     over a 31.5 year period.
 
(16) Reflects amortization of goodwill (amortized over a 15-year period).
 
(17) Reflects the tax effect of the adjustments described in Notes 11-15.
 
                             AVAILABLE INFORMATION
 
     The Company is subject to the informational requirements of the Exchange
Act and the rules and regulations thereunder and, in accordance therewith, files
reports, proxy statements and other information with the Commission. Reports,
proxy statements and other information filed by the Company can be inspected and
copied at Room 1024 of the Commissioner's office at 450 Fifth Street, N.W.,
Washington, D.C. 20549 and at the SEC's Regional Office in New York (7 World
Trade Center, Suite 1300, New York, New York 10048), and copies of such material
can be obtained from the Public Reference Section of the SEC at 450 Fifth
Street, N.W., Washington, D.C. 20549 at prescribed rates. The Common Stock is
quoted on the Nasdaq Stock Market's National Market. Consequently, reports,
proxy statements and other information relating to the Company also may be
inspected at the office of the National Association of Securities Dealers, Inc.
at 1735 K Street, N.W., Washington, D.C. 20006.
 
     The Company has filed an Issuer Tender Offer on Schedule 13E-4, which
includes this Offer to Purchase, with the SEC. Statements contained in this
Offer to Purchase as to the contents of any contract or other document filed as
an exhibit to the Company's Issuer Tender Offer on Schedule 13E-4 are not
necessarily complete, and in each instance reference is made to the copy of such
contract or other document filed therewith as an exhibit.
 
                                 MISCELLANEOUS
 
     The Offer is not being made to, nor will the Company accept tenders from or
on behalf of, holders of Shares residing in any jurisdiction in which the making
of the Offer or the acceptance thereof would not be in compliance with the
securities, blue sky or other laws of such jurisdiction. The Company is not
aware of any jurisdiction where the making of the Offer or the tender of Shares
would not be in compliance with applicable law. If the Company becomes aware of
any jurisdiction where the making of the Offer or the tender of Shares is not in
compliance with any applicable law, the Company will make a good faith effort to
comply with such law. If after such good faith effort the Company cannot comply
with such law, the Offer will not be made to (nor will tenders be accepted from
or on behalf of) the holders of Shares residing in such jurisdiction. In any
jurisdiction in which the securities, blue sky or other laws require the Offer
to be made by a licensed broker or dealer, the Offer will be deemed to be made
on behalf of the Company by the Dealer Manager or one or more registered brokers
or dealers licensed under the laws of such jurisdiction.
 
     All information contained in this Offer to Purchase relating to the Company
has been supplied by the Company, and all information contained in this Offer to
Purchase relating to Family has been supplied by Family.
 
                                          PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
September 10, 1996
 
                                       39
<PAGE>   43
 
                                   SCHEDULE A
 
                TRANSACTIONS EFFECTED BY DIRECTORS AND OFFICERS

<TABLE>
 
     Set forth below are the purchases of Shares effected by, or for the benefit
of, each director and executive officer of the Company since July 16, 1996, all
of which were pursuant to the indicated stock benefit plans of the Company:
 
<CAPTION>
                                       DATE OF    NUMBER OF
NAME                                   PURCHASE    SHARES     PRICE         MANNER OF PURCHASE
- ----                                   --------   ---------   ------   -----------------------------
<S>                                    <C>          <C>       <C>      <C>
Gray, Everett........................    8/9/96        20     $21.00    Dividend Reinvestment Plan
Greene, Andrew.......................    8/9/96        20      21.00    Dividend Reinvestment Plan
Levenson, Dana.......................    8/9/96         2      21.00    Dividend Reinvestment Plan
Ryan, William........................   7/19/96       488      17.32   Employee Stock Purchase Plan
                                        7/22/96     .1518      19.50       Thrift Incentive Plan
                                         8/9/96        70      21.00    Dividend Reinvestment Plan
Beyer, Henry.........................   7/22/96     36.64      19.50       Thrift Incentive Plan
                                         8/7/96     62.62      20.20       Thrift Incentive Plan
                                         8/9/96       .80      20.88       Thrift Incentive Plan
                                        8/21/96     17.63      20.97       Thrift Incentive Plan
Fridlington, John....................   7/22/96      .313      19.50       Thrift Incentive Plan
Mitchell, Carol......................   7/19/96       318      17.32   Employee Stock Purchase Plan
                                        7/22/96     12.06      19.50       Thrift Incentive Plan
                                         8/7/96      9.95      20.20       Thrift Incentive Plan
                                         8/9/96       .13      20.88       Thrift Incentive Plan
                                        8/21/96      8.81      20.97       Thrift Incentive Plan
Verrill, Peter.......................   7/19/96       789      17.32   Employee Stock Purchase Plan
                                        7/22/96     .2880      19.50       Thrift Incentive Plan
                                         8/9/96        39      21.00    Dividend Reinvestment Plan
</TABLE>
 
     In addition to the foregoing transactions, effective September 3, 1996,
Davis Thurber transferred 90,000 Shares to his wife and 25,000 Shares to a
limited partnership for family members, of which he and his wife are the sole
general partners. In each case these transfers were without consideration.
<PAGE>   44
 
     Facsimile copies of the Letter of Transmittal, properly completed and duly
executed, will be accepted from Eligible Institutions. The Letter of
Transmittal, certificates for Shares and any other required documents should be
sent or delivered by each tendering shareholder or his or her broker, dealer,
commercial bank, trust company or other nominee to the Depositary at one of its
addresses set forth below:
 
                                THE DEPOSITARY:
 
                   AMERICAN STOCK TRANSFER AND TRUST COMPANY
 
<TABLE>
   <S>                                               <C>
                   By Mail:                             By Facsimile Transmission:
                40 Wall Street                       (for Eligible Institutions Only)
           New York, New York 10005                           (718) 234-5001
   (Attention: Corporate Trust Department)                Confirm by Telephone:
                                                              (718) 921-8200
</TABLE>
 
                          By Hand/Overnight Delivery:
                                 40 Wall Street
                                   46th Floor
                            New York, New York 10005
                    (Attention: Corporate Trust Department)
 
     Any questions or requests for assistance or for additional copies of the
Offer to Purchase, the Letter of Transmittal or the Notice of Guaranteed
Delivery may be directed to the Information Agent at the telephone number and
address set forth below. A tendering shareholder also may contact his broker,
dealer, commercial bank or trust company for assistance concerning the Offer. In
order to confirm the delivery of Shares, a tendering shareholder should contact
the Depositary.
 
                    THE INFORMATION AGENT FOR THE OFFER IS:
 
                               MORROW & CO., INC.
                                909 Third Avenue
                                   20th Floor
                            New York, New York 10022
                                 (212) 754-8000
 
                                Call Toll Free:
                                 1-800-566-9061
              Banks and brokerage firms please call 1-800-662-5200
 
                      THE DEALER MANAGER FOR THE OFFER IS:
 
                         KEEFE, BRUYETTE & WOODS, INC.
                             Two World Trade Center
                            New York, New York 10048
                                 (212) 323-8450

<PAGE>   1
                                                                 EXHIBIT 9(a)(2)
 
                             LETTER OF TRANSMITTAL
 
                      TO ACCOMPANY SHARES OF COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
 
                                       OF
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                   TENDERED PURSUANT TO THE OFFER TO PURCHASE
                            DATED SEPTEMBER 10, 1996

- ------------------------------------------------------------------------------- 
            THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS EXPIRE
                       AT 5:00 P.M., NEW YORK CITY TIME,
           ON MONDAY, OCTOBER 7, 1996, UNLESS THE OFFER IS EXTENDED.
- -------------------------------------------------------------------------------

           TO: AMERICAN STOCK TRANSFER AND TRUST COMPANY, DEPOSITARY
 
<TABLE>
    <S>                                                 <C>
                    By Mail:                               By Facsimile Transmission:
                 40 Wall Street                         (for Eligible Institutions Only)
            New York, New York 10005                             (718) 234-5001
    (Attention: Corporate Trust Department)                  Confirm by Telephone:
                                                                 (718) 921-8200
</TABLE>
 
                          By Hand/Overnight Delivery:
                                 40 Wall Street
                                   46th Floor
                            New York, New York 10005
                    (Attention: Corporate Trust Department)
<TABLE>

- --------------------------------------------------------------------------------
                         DESCRIPTION OF SHARES TENDERED
                           (SEE INSTRUCTIONS 3 AND 4)
 

<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------
     NAME(S) AND ADDRESS(ES) OF REGISTERED OWNER(S)
               (PLEASE FILL IN EXACTLY AS                                     CERTIFICATE(S) TENDERED
          NAME(S) APPEAR(S) ON CERTIFICATE(S))                           (ATTACH SIGNED LIST IF NECESSARY)
 ------------------------------------------------------------------------------------------------------------------------
<S>                                                       <C>                     <C>                      <C>
                                                                                       NUMBER
                                                                                     OF SHARES               NUMBER
                                                              CERTIFICATE          REPRESENTED BY          OF SHARES
                                                               NUMBER(S)*         CERTIFICATE(S)*          TENDERED**
                                                          ---------------------------------------------------------------
                                                          ---------------------------------------------------------------
                                                          ---------------------------------------------------------------
                                                          ---------------------------------------------------------------
                                                              Total Shares
                                                                Tendered
 ------------------------------------------------------------------------------------------------------------------------

<FN> 
  * Need not be completed if Shares are delivered by book-entry transfer.
 
 ** If you desire to tender fewer than all Shares evidenced by any certificates
    listed above, please indicate in this column the number of Shares you wish
    to tender. Otherwise, all Shares evidenced by such certificates will be
    deemed to have been tendered. See Instruction 4.
- --------------------------------------------------------------------------------


</TABLE>

<PAGE>   2
 
     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN THOSE SHOWN ABOVE DOES
NOT CONSTITUTE A VALID DELIVERY.
 
     THIS LETTER OF TRANSMITTAL IS TO BE USED ONLY (A) IF CERTIFICATES FOR
SHARES (AS DEFINED BELOW) ARE TO BE FORWARDED WITH IT, OR (B) IF A TENDER OF
SHARES IS TO BE MADE BY BOOK-ENTRY TRANSFER TO THE ACCOUNT MAINTAINED BY THE
DEPOSITARY AT THE DEPOSITORY TRUST COMPANY ("DTC") OR THE PHILADELPHIA
DEPOSITORY TRUST COMPANY ("PDTC") (TOGETHER, THE "BOOK-ENTRY TRANSFER
FACILITIES") AS DESCRIBED UNDER "THE OFFER -- PROCEDURE FOR TENDERING SHARES" IN
THE OFFER TO PURCHASE.
 
     ABSENT CIRCUMSTANCES CAUSING THE RIGHTS (AS DEFINED BELOW) TO BECOME
EXERCISABLE OR SEPARATELY TRADEABLE PRIOR TO THE EXPIRATION DATE (AS DEFINED IN
THE OFFER TO PURCHASE), A TENDER OF SHARES ALSO WILL CONSTITUTE A TENDER OF THE
ASSOCIATED RIGHTS. UNLESS THE CONTEXT REQUIRES OTHERWISE, ALL REFERENCES HEREIN
TO SHARES INCLUDE THE ASSOCIATED RIGHTS. SHAREHOLDERS WHOSE CERTIFICATES ARE NOT
IMMEDIATELY AVAILABLE OR WHO CANNOT DELIVER THEIR CERTIFICATES FOR SHARES AND
ALL OTHER DOCUMENTS THIS LETTER OF TRANSMITTAL REQUIRES TO THE DEPOSITORY AT OR
BEFORE THE EXPIRATION DATE (OR WHO ARE UNABLE TO COMPLY WITH THE PROCEDURE FOR
BOOK-ENTRY TRANSFER ON A TIMELY BASIS) MUST TENDER THEIR SHARES ACCORDING TO THE
GUARANTEED DELIVERY PROCEDURE SET FORTH UNDER "THE OFFER -- PROCEDURE FOR
TENDERING SHARES" IN THE OFFER TO PURCHASE. SEE INSTRUCTION 2. DELIVERY OF
DOCUMENTS TO ONE OF THE BOOK-ENTRY TRANSFER FACILITIES DOES NOT CONSTITUTE
DELIVERY TO THE DEPOSITARY.
 
/ / CHECK HERE IF TENDERED SHARES ARE BEING DELIVERED BY BOOK-ENTRY TRANSFER
    MADE TO AN ACCOUNT MAINTAINED BY THE DEPOSITARY WITH ONE OF THE BOOK-ENTRY
    TRANSFER FACILITIES AND COMPLETE THE FOLLOWING:
 
   Names of Tendering Institution:
                                  --------------------------------------------
 
   Check Box of Applicable Book-Entry Transfer Facility:
 
      / / DTC
 
      / / PDTC
 
   Account Number:
                  -------------------------------------------------------------
 
   Transaction Code Number:
                           ----------------------------------------------------
 
/ / CHECK HERE IF CERTIFICATES FOR TENDERED SHARES ARE BEING DELIVERED PURSUANT
    TO A NOTICE OF GUARANTEED DELIVERY PREVIOUSLY SENT TO THE DEPOSITARY AND
    COMPLETE THE FOLLOWING:
 
   Name(s) of Registered Owner(s):
                                  ---------------------------------------------
 
   Date of Execution of Notice of Guaranteed Delivery:
                                                      -------------------------
 
   Name of Institution Which Guaranteed Delivery:
                                                 ------------------------------
 
   Check Box of Applicable Book-Entry Transfer Facility and Give Account Number
   and Transaction Code if Delivered by Book-Entry Transfer:
 
      / / DTC
 
      / / PDTC
 
   Account Number:
                  -------------------------------------------------------------

   Transaction Code Number:
                           ----------------------------------------------------
<PAGE>   3
 
TO AMERICAN STOCK TRANSFER AND TRUST COMPANY:
 
     The undersigned hereby tenders to Peoples Heritage Financial Group, Inc., a
Maine corporation (the "Company"), the above-described shares of the Company's
common stock, par value $.01 per share (including the associated Preferred Stock
Purchase Rights (the "Rights"), the "Shares"), at the price per Share indicated
in this Letter of Transmittal, net to the seller in cash, upon the terms and
subject to the conditions set forth in the Company's Offer to Purchase dated
September 10, 1996, receipt of which is hereby acknowledged, and in this Letter
of Transmittal (which together constitute the "Offer"). Absent circumstances
causing the Rights to become exercisable or separately tradable prior to the
Expiration Date, a tender of Shares also will constitute a tender of the
associated Rights. Unless the context requires otherwise, all references herein
to Shares include the associated Rights.
 
     Subject to and effective on acceptance for payment of the Shares tendered
hereby in accordance with the terms of the Offer (including, if the Offer is
extended or amended, the terms or conditions of any such extension or
amendment), the undersigned hereby sells, assigns, and transfers to or upon the
order of the Company all right, title and interest in and to all Shares tendered
hereby or orders the registration of such Shares tendered by book-entry transfer
that are purchased pursuant to the Offer to or upon the order of the Company and
hereby irrevocably constitutes and appoints the Depositary as attorney-in-fact
of the undersigned with respect to such Shares, with full power of substitution
(such power of attorney being an irrevocable power coupled with interest), to:
 
          (a) deliver certificates for such Shares, or transfer ownership of
     such Shares on the account books maintained by a Book-Entry Transfer
     Facility, together in either such case with all accompanying evidences of
     transfer and authenticity, to or upon the order of the Company, upon
     receipt by the Depositary, as the undersigned's agent, of the Purchase
     Price (as defined below) with respect to such Shares;
 
          (b) present certificates for such Shares for cancellation and transfer
     on the Company's books; and
 
          (c) receive all benefits and otherwise exercise all rights of
     beneficial ownership of such Shares, all in accordance with the terms of
     the Offer.
 
     The undersigned hereby represents and warrants to the Company that:
 
          (a) the undersigned understands that tenders of Shares pursuant to any
     one of the procedures described under "The Offer -- Procedure for Tendering
     Shares" in the Offer to Purchase and in the Instructions hereto will
     constitute the undersigned's acceptance of the terms and conditions of the
     Offer, including the undersigned's representation and warranty that (i) the
     undersigned has a net long position in Shares or equivalent securities at
     least equal to the Shares tendered within the meaning of Rule 14e-4
     promulgated under the Securities Exchange Act of 1934, as amended, and (ii)
     such tender of Shares complies with Rule 14e-4;
 
          (b) when and to the extent the Company accepts the Shares for
     purchase, the Company will acquire good, marketable and unencumbered title
     to them, free and clear of all security interests, liens, charges,
     encumbrances, conditional sales agreements or other obligations relating to
     their sale or transfer, and not subject to any adverse claim;
 
          (c) on request, the undersigned will execute and deliver any
     additional documents the Depositary or the Company deems necessary or
     desirable to complete the assignment, transfer and purchase of the Shares
     tendered hereby; and
 
          (d) the undersigned has read and agrees to all of the terms of the
     Offer.
 
     The names and addresses of the registered owners should be printed, if they
are not already printed above, exactly as they appear on the certificates
representing Shares tendered hereby. The certificate numbers, the number of
Shares represented by such certificates, the number of Shares that the
undersigned wishes to tender and the purchase price at which such Shares are
being tendered should be indicated in the appropriate boxes.
 
     The undersigned understands that the Company will determine a single per
Share price (not greater than $24.00 nor less than $21.00 per Share) (the
"Purchase Price") that it will pay for Shares validly tendered pursuant to the
Offer taking into account the number of Shares so tendered and the prices
specified by tendering shareholders. The undersigned understands that the
Company will select the Purchase Price that will allow it to buy
<PAGE>   4
 
2,500,000 Shares (or such lesser number of Shares as are validly tendered at
prices not greater than $24.00 nor less than $21.00 per Share) pursuant to the
Offer. The undersigned understands that all Shares validly tendered at prices at
or below the Purchase Price will be purchased at the Purchase Price, net to the
seller in cash, upon the terms and subject to the conditions of the Offer,
including its proration provisions, and that the Company will return all other
Shares, including Shares tendered and not withdrawn at prices greater than the
Purchase Price and Shares not purchased because of proration.
 
     The undersigned recognizes that under certain circumstances set forth in
the Offer to Purchase, the Company may terminate or amend the Offer or may not
be required to purchase any of the Shares tendered hereby or may accept for
payment fewer than all of the Shares tendered hereby. The undersigned
understands that certificate(s) for any Shares not tendered or not purchased
will be returned to the undersigned at the address indicated above, unless
otherwise indicated under the "Special Payment Instructions" or "Special
Delivery Instructions" below. The undersigned recognizes that the Company has no
obligation, pursuant to the "Special Payments Instructions," to transfer any
certificate for Shares from the name of their registered owner, or to order the
registration or transfer of such Shares tendered by book-entry transfer, if the
Company purchases none of the Shares represented by such certificate or tendered
by such book-entry transfer.
 
     The undersigned understands that acceptance of Shares by the Company for
payment will constitute a binding agreement between the undersigned and the
Company upon the terms and subject to the conditions of the Offer.
 
     The check for the Purchase Price for such of the tendered Shares as are
purchased will be issued to the order of the undersigned and mailed to the
address indicated above unless otherwise indicated under the "Special Payment
Instructions" or the "Special Delivery Instructions" below.
 
     All authority conferred or agreed to be conferred in this Letter of
Transmittal shall survive the death or incapacity of the undersigned, and any
obligations of the undersigned under this Letter of Transmittal shall be binding
upon the heirs, personal representatives, successors and assigns of the
undersigned. Except as stated in the Offer to Purchase, this tender is
irrevocable.
<PAGE>   5
 
                    NOTE: SIGNATURES MUST BE PROVIDED BELOW
              PLEASE READ THE ACCOMPANYING INSTRUCTIONS CAREFULLY
 
                   ------------------------------------------
 
       PRICE (IN DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED.
 
                   ------------------------------------------
 
           If Shares are being tendered at more than one price, use a
            separate Letter of Transmittal for each price specified.
                              (See Instruction 5)
 
                   ------------------------------------------
 
                              Check only one box.
            If more than one box is checked, or if no box is checked
            (except as provided in the Odd Lots Instructions below),
                      there is no valid tender of Shares.
 
                   ------------------------------------------
 
                            Shares tendered at price
                        determined pursuant to the Offer
 
/ / The undersigned wants to maximize the chance of having Peoples Heritage
    Financial Group, Inc. purchase all the Shares the undersigned is tendering
    (subject to the possibility of proration). Accordingly, by checking this one
    box INSTEAD OF ONE OF THE PRICE BOXES BELOW, the undersigned hereby tenders
    Shares and is willing to accept the Purchase Price determined pursuant to
    the Offer. This action will result in receiving a price per Share of as low
    as $21.00 or as high as $24.00.
 
                                      or
                   ------------------    ------------------
 
                            Shares tendered at price
                           determined by shareholder
 

<TABLE>
By checking one of the boxes below INSTEAD OF THE BOX ABOVE, the undersigned
hereby tenders Shares at the price checked. This action could result in none of
the Shares being purchased if the Purchase Price for the Shares is less than the
price checked.
 
Price (in dollars) per Share at which Shares are being tendered:
 
<S>                   <C>                   <C>
/ / $21.00            / / $22.25            / / $23.25
/ /  21.25            / /  22.50            / /  23.50
/ /  21.50            / /  22.75            / /  23.75
/ /  21.75            / /  23.00            / /  24.00
/ /  22.00
</TABLE>
<PAGE>   6
 
                                    ODD LOTS
                              (SEE INSTRUCTION 8)
 
     To be completed ONLY if Shares are being tendered by or on behalf of a
person owning beneficially, as of the close of business on September 9, 1996 and
who continues to own beneficially as of the Expiration Date (as defined below).
 
     The undersigned either (check one box):
 
     / / was the beneficial owner, as of the close of business on September 9,
         1996, of an aggregate of fewer than 100 Shares, all of which are being
         tendered, or
 
     / / is a broker, dealer, commercial bank, trust company or other nominee
         which
 
       (a) is tendering, for the beneficial owners thereof, Shares with respect
           to which it is the record owner, and
 
       (b) believes, based on representations made to it by such beneficial
           owners, that each such person was the beneficial owner, as of the
           close of business on September 9, 1996 of an aggregate of fewer than
           100 Shares and is tendering all such Shares.
<PAGE>   7
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
                           DIVIDEND REINVESTMENT PLAN
                              (SEE INSTRUCTION 14)
 
     This section is to be completed ONLY if Shares held in the Company's
Dividend Reinvestment Plan are to be tendered.
 
     / / By checking this box, the undersigned represents that the undersigned
         is a participant in the Peoples Heritage Financial Group, Inc. Dividend
         Reinvestment Plan and hereby tenders the following number of Shares
         held in the Dividend Reinvestment Plan account of the undersigned at
         American Stock Transfer and Trust Company:
         ________ Shares*
 
* The undersigned understands and agrees that all Shares held in the Dividend
  Reinvestment Plan account of the undersigned at American Stock Transfer and
  Trust Company will be tendered if the above box is checked and the space above
  is left blank.
 
- ------------------------------------------------------------
 
                          SPECIAL PAYMENT INSTRUCTIONS
                      (SEE INSTRUCTIONS 1, 4, 6, 7 AND 9)
 
        To be completed ONLY if certificate(s) for the Shares not tendered or
   not purchased and/or any check for the Purchase Price of Shares purchased
   are to be issued in the name of and sent to someone other than the
   undersigned.
 
   Issue:  / / check  / / certificate(s) to:
 
   Name
   ------------------------------------------------------------
                                 (PLEASE PRINT)
 
   Address
   ------------------------------------------------------------
 
   ------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
   ------------------------------------------------------------
                 (TAX IDENTIFICATION OR SOCIAL SECURITY NUMBER)

   ------------------------------------------------------------
 
   ------------------------------------------------------------
                         SPECIAL DELIVERY INSTRUCTIONS
                      (SEE INSTRUCTIONS 1, 4, 6, 7 AND 9)
 
        To be completed ONLY if certificate(s) for Shares not tendered or not
   purchased and/or any check for the Purchase Price of Shares purchased,
   issued in the name of the undersigned, are to be sent to someone other
   than the undersigned, or the undersigned at an address other than that
   shown above.
 
   Mail:  / / check  / / certificate(s) to:
 
   Name
   ------------------------------------------------------------
                                 (PLEASE PRINT)
 
   Address
   ------------------------------------------------------------
 
   ------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
   ------------------------------------------------------------
<PAGE>   8
 
                            SHAREHOLDER(S) SIGN HERE
                           (SEE INSTRUCTIONS 1 AND 6)
             (PLEASE COMPLETE SUBSTITUTE FORM W-9 CONTAINED HEREIN)
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
                            SIGNATURE(S) OF OWNER(S)
 
Must be signed by registered owner(s) exactly as name(s) appear(s) on
certificate(s) or on a security position listing or by person(s) authorized to
become registered owner(s) by certificate(s) and documents transmitted with this
Letter of Transmittal. If signature is by attorney-in-fact, executor,
administrator, trustee, guardian, officer of a corporation or another acting in
a fiduciary or representative capacity, please set forth the full title. See
Instruction 6.
 
PLEASE PRINT OR TYPE.
 
Dated:                            , 1996
      --------------------------- 
 
Name(s)
        ------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
                                 (PLEASE PRINT)
 
Capacity (full Title)
                     -----------------------------------------------------------
 
Area Code and
Telephone Number
                ----------------------------------------------------------------
 
Tax Identification or
Social Security Number(s)
                         -------------------------------------------------------
 
                      MEDALLION GUARANTEE OF SIGNATURE(S)
                           (SEE INSTRUCTIONS 1 AND 6)
 
Authorized Signature
                    ------------------------------------------------------------
 
Name  
      --------------------------------------------------------------------------
                                 (PLEASE PRINT)
 
Title
      --------------------------------------------------------------------------
 
Name of Firm
            --------------------------------------------------------------------
 
Address
       -------------------------------------------------------------------------
                               (INCLUDE ZIP CODE)
 
Area Code and
Telephone Number
                ----------------------------------------------------------------
 
Dated:                            , 1996
      --------------------------- 
<PAGE>   9
 
                                  INSTRUCTIONS
                     FORMING PART OF THE TERMS OF THE OFFER
 
     (1) Guarantee of Signatures.  No signature guarantee is required if either:
 
          (a) this Letter of Transmittal is signed by the registered owner of
     the Shares exactly as the name of the registered holder appears on the
     certificate (which term, for purposes of this document, shall include any
     participant in a Book-Entry Transfer Facility whose name appears on a
     security position listing as the owner of Shares) tendered with this Letter
     of Transmittal and payment and delivery are to be made directly to such
     owner unless such owner has completed either the box entitled "Special
     Payment Instructions" or "Special Delivery Instructions" above; or
 
          (b) such Shares are tendered for the account of a member firm of a
     registered national securities exchange, a member of the National
     Association of Securities Dealers, Inc. or a commercial bank, trust
     company, savings association or credit union having an office, branch or
     agency in the United States (each such entity an "Eligible Institution").
 
     In all other cases, an Eligible Institution must Medallion guarantee all
signatures on this Letter of Transmittal. See Instruction 6.
 
     (2) Delivery of Letter of Transmittal and Certificates: Guaranteed Delivery
Procedures.  This Letter of Transmittal is to be used only if certificates are
delivered with it to the Depositary (or such certificates will be delivered
pursuant to a Notice of Guaranteed Delivery previously sent to the Depositary)
or if tenders are to be made pursuant to the procedures for tender by book-entry
transfer set forth under "The Offer -- Procedure for Tendering Shares" in the
Offer to Purchase. Certificates for all physically tendered Shares or
confirmation of a book-entry transfer into the depositary's account at a
Book-Entry Transfer Facility of Shares tendered electronically, together in each
case with a properly completed and duly executed Letter of Transmittal or
facsimile of it, and any other documents required by this Letter of Transmittal,
should be mailed or delivered to the Depositary at the appropriate address set
forth herein and must be delivered to the Depositary on or before the Expiration
Date (as defined in the Offer to Purchase).
 
     Shareholders whose certificates are not immediately available or who cannot
deliver Shares and all other required documents to the Depositary on or before
the Expiration Date, or whose Shares cannot be delivered on a timely basis
pursuant to the procedures for book-entry transfer, may tender their Shares by
or through an Eligible Institution by properly completing (including the price
at which the Shares are being tendered) and duly executing and delivering a
Notice of Guaranteed Delivery (or facsimile of it) and by otherwise complying
with the guaranteed delivery procedure set forth under "The Offer -- Procedure
for Tendering Shares" in the Offer to Purchase. Pursuant to such procedure, the
certificates for all physically tendered Shares, or book-entry confirmation, as
the case may be, as well as a properly completed and duly executed Letter of
Transmittal, must be received by the Depositary within five over-the-counter
trading days after receipt by the Depositary of such Notice of Guaranteed
Delivery, all as provided under "The Offer -- Procedure for Tendering Shares" in
the Offer to Purchase.
 
     The Notice of Guaranteed Delivery may be delivered by hand or transmitted
by telegram, telex, facsimile transmission or mail to the Depositary and must
include a signature guarantee by an Eligible Institution in the form set forth
in such Notice. For Shares to be validly tendered pursuant to the guaranteed
delivery procedure, the Depositary must receive the Notice of Guaranteed
Delivery on or before the Expiration Date.
 
     THE METHOD OF DELIVERY OF ALL DOCUMENTS, INCLUDING CERTIFICATES FOR SHARES,
IS AT THE ELECTION AND RISK OF THE TENDERING SHAREHOLDER. IF DELIVERY IS BY
MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS
RECOMMENDED.
 
     The Company will not accept any alternative, conditional or contingent
tenders, nor will it purchase any fractional Shares. All tendering shareholders,
by execution of this Letter of Transmittal (or a facsimile of it), waive any
right to receive any notice of the acceptance of their tender.
<PAGE>   10
 
     (3) Inadequate Space.  If the space provided in the box captioned
"Description of Shares Tendered" is inadequate, the certificate numbers and/or
the number of Shares should be listed on a separate signed schedule and attached
to this Letter of Transmittal.
 
     (4) Partial Tenders and Unpurchased Shares.  (Not applicable to
shareholders who tender by book-entry transfer.) If fewer than all of the Shares
evidenced by any certificate are to be tendered, fill in the number of Shares
which are to be tendered in the column entitled "Number of Shares Tendered." In
such case, if any tendered Shares are purchased, a new certificate for the
remainder of the Shares evidenced by the old certificate(s) will be issued and
sent to the registered holders, unless otherwise specified in either the
"Special Payment Instructions" or "Special Delivery Instructions" boxes on this
Letter of Transmittal, as soon as practicable after the Expiration Date. All
Shares represented by the certificate(s) listed and delivered to the Depositary
are deemed to have been tendered unless otherwise indicated.
 
     (5) Indication of Price at which Shares are being Tendered.  For Shares to
be properly tendered, the shareholder must check the box indicating the price
per Share at which he is tendering Shares under "Price (In Dollars) Per Share at
Which Shares Are Being Tendered" on this Letter of Transmittal, provided,
however, that a shareholder may check the box above in the section entitled
"PRICE (IN DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED" indicating
that he or she is tendering all Shares at the Purchase Price. ONLY ONE BOX MAY
BE CHECKED. IF MORE THAN ONE BOX IS CHECKED OR IF NO BOX IS CHECKED, THERE IS NO
VALID TENDER OF SHARES. A shareholder wishing to tender portions of his or her
Share holdings at different prices must complete a separate Letter of
Transmittal for each price at which he or she wishes to tender each such portion
of his or her Shares. The same Shares cannot be tendered (unless previously
properly withdrawn as provided in the Offer to Purchase) at more than one price.
 
     (6) Signatures on Letter of Transmittal, Stock Powers and Endorsements.
 
          (a) If this Letter of Transmittal is signed by the registered owner(s)
     of the Shares tendered hereby, the signature(s) must correspond exactly
     with the name(s) as written on the face of the certificate without any
     change whatsoever.
 
          (b) If the Shares are registered in the names of two or more joint
     owners, each such owner must sign this Letter of Transmittal.
 
          (c) If any tendered Shares are registered in different names on
     several certificates, it will be necessary to complete, sign and submit as
     many separate Letters of Transmittal (or facsimiles thereof) as there are
     different registrations of certificates.
 
          (d) When this Letter of Transmittal is signed by the registered
     owner(s) of the Shares listed and transmitted hereby, no endorsements of
     certificate(s) representing such Shares or separate stock powers are
     required unless payment is to be made, or the certificates for Shares not
     tendered or not purchased are to be issued, to a person other than the
     registered owner(s). Signatures on such certificates or stock powers must
     be Medallion guaranteed by an Eligible Institution. If this Letter of
     Transmittal is signed by a person other than the registered owner of the
     certificates listed, however, the certificates must be endorsed or
     accompanied by appropriate stock powers, in either case signed exactly as
     the name(s) of the registered owner(s) appear(s) on the certificate, and
     the signatures on such certificate or stock powers must be Medallion
     guaranteed by an Eligible Institution. See Instruction 1.
 
          (e) If this Letter of Transmittal or any certificates or stock powers
     are signed by trustees, executors, administrators, guardians,
     attorneys-in-fact, officers of corporations or others acting in a fiduciary
     or representative capacity, such persons should so indicate when signing
     and must submit proper evidence satisfactory to the Company of their
     authority so to act.
 
     (7) Stock Transfer Taxes.  Except as provided in this Instruction 7, no
stock transfer tax stamps or funds to cover such stamps need accompany this
Letter of Transmittal. The Company will pay or cause to be paid any stock
transfer taxes payable on the transfer to it of Shares purchased pursuant to the
Offer. If, however,
 
          (a) payment of the Purchase Price is to be made to any person(s) other
     than the registered owner(s);
<PAGE>   11
 
          (b) Shares not tendered or not accepted for purchase are to be
     registered in the name of any person(s) other than the registered owner(s)
     or
 
          (c) tendered certificates are registered in the name(s) of any
     person(s) other than the person(s) signing this Letter of Transmittal,
 
then the Depository will deduct from the Purchase Price the amount of any stock
transfer taxes (whether imposed on the registered owner, such other person or
otherwise) payable on account of the transfer to such person unless satisfactory
evidence of the payment of such taxes or an exemption from them is submitted.
 
     (8) Odd Lots.  As described under "The Offer -- Number of Shares;
Proration" in the Offer to Purchase, if the Company is to purchase less than all
Shares tendered before the Expiration Date, the Shares purchased first will
consist of all Shares tendered by any shareholder who owned beneficially, as of
the close of business on September 9, 1996 and continues to own beneficially as
of the Expiration Date, an aggregate of fewer than 100 Shares and who tenders
all of his or her Shares at or below the Purchase Price (including by not
designating a purchase price). The preference will not be available unless the
box captioned "Odd Lots" is completed.
 
     (9) Special Payment and Delivery Instructions.  If certificates for Shares
not tendered or not purchased and/or checks are to be issued in the name of a
person other than the person signing the Letter of Transmittal or if such
certificates and/or checks are to be sent to someone other than the person
signing the Letter of Transmittal or to the signer at a different address, the
boxes captioned "Special Payment Instructions" and/or "Special Delivery
Instructions" on this Letter of Transmittal should be completed as applicable
and signatures must be Medallion guaranteed as described in Instruction 1.
 
     (10) Irregularities.  The Company will determine, in its discretion, all
questions as to the number of Shares to be accepted, the price to be paid
therefor and the validity, form, eligibility (including time of receipt) and
acceptance for payment of any tender of Shares and its determination shall be
final and binding on all parties. The Company reserves the absolute right to
reject any or all tenders of Shares determined by it not to be in proper form or
the acceptance of or payment for which may be unlawful. The Company also
reserves the absolute right to waive any of the conditions of the Offer or any
defect or irregularity in the tender of any particular Shares and the Company's
interpretation of the terms of the Offer (including these instructions) will be
final and binding on all parties. No tender of Shares will be deemed to be
validly made until all defects or irregularities have been cured or waived.
Unless waived, any defects or irregularities in connection with tenders must be
cured within such time as the Company shall determine. None of the Company, the
Dealer Manager, the Depositary, the Information Agent nor any other person is or
will be obligated to give notice of defects or irregularities in tenders, nor
shall any of them incur any liability for failure to give any such notice.
 
     (11) Questions and Requests for Assistance and Additional Copies.  
Questions and request for assistance may be directed to, or additional
copies of the Offer to Purchase, the Notice of Guaranteed Delivery and this
Letter of Transmittal may be obtained from, the Information Agent at the address
and telephone number set forth at the end of this Letter of Transmittal or from
your broker, dealer, commercial bank or trust company.
 
     (12) Substitute Form W-9.  Each tendering shareholder (see "Important Tax
Information" below) is required to provide the Depositary with a correct
taxpayer identification number ("TIN") on Substitute Form W-9 (the "Form W-9")
which is provided under "Important Tax Information" below, and, if applicable,
to indicate that the shareholder is not subject to backup withholding by
checking the box in Part 2 of the form. Failure to provide the information on
the form or to check the box in Part 2 of the form may subject the tendering
shareholder to 31% federal income tax withholding on the payments made to the
shareholder or other payee with respect to Shares purchased pursuant to the
Offer. The box in Part 3 of the form may be checked if the tendering shareholder
has not been issued a TIN and has applied for a TIN or intends to apply for a
TIN in the near future. If the box in Part 3 is checked and the Depositary is
not provided with a TIN within sixty (60) days, the Depositary will withhold 31%
on all such payments thereafter until a TIN is provided to the Depositary.
 
     (13) Withholding on Foreign Shareholders.  The Depository will withhold
federal income taxes equal to 30% of the gross payments payable to a foreign
shareholder unless the Depository determines that a reduced rate of withholding
or an exemption from withholding is applicable. For this purpose, a foreign
shareholder is any shareholder that is not (i) a citizen or resident of the
United States, (ii) a corporation, partnership or other entity
<PAGE>   12
 
created or organized in or under the laws of the United States or any political
subdivision thereof, or (iii) any estate or trust the income of which is subject
to United States federal income taxation regardless of the source of such
income. The Depository will determine a shareholder's status as a foreign
shareholder and eligibility for a reduced rate of, or an exemption from,
withholding by reference to the shareholder's address and to any outstanding
certificates or statements concering eligibility for a reduced rate of, or
exemption from, withholding unless facts and circumstances indicate that
reliance is not warranted. A foreign shareholder who has not previously
submitted the appropriate certificates or statements with respect to a reduced
rate of, or exemption from, withholding for which such shareholder may be
eligible should consider doing so in order to avoid overwithholding. A foreign
shareholder may be eligible to obtain a refund of tax withheld if such
shareholder meets one of the three tests for capital gain or loss treatment
described under "The Offer -- Certain Federal Income Tax Consequences" in the
Offer to Purchase or is otherwise able to establish that no tax or a reduced
amount of tax was due.
 
     (14) Dividend Reinvestment Plan.  Shareholders who participate in the
Company's Dividend Reinvestment Plan who want to tender Shares held under that
plan pursuant to the Offer should mark the box under "PEOPLES HERITAGE FINANCIAL
GROUP, INC. DIVIDEND REINVESTMENT PLAN" and indicate the number of Shares that
are to be tendered. If such box is marked but the number of Shares to be
tendered is not indicated, all Shares held for the shareholder's account in the
Company's Dividend Reinvestment Plan at American Stock Transfer and Trust
Company will be tendered. All Shares held for the shareholders' account in the
Company's Dividend Reinvestment Plan at American Stock Transfer and Trust
Company will be tendered pursuant to the same price listed under "PRICE (IN
DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED."
 
     IMPORTANT: THIS LETTER OF TRANSMITTAL OR A MANUALLY SIGNED FACSIMILE OF IT
(TOGETHER WITH CERTIFICATES FOR SHARES OR CONFIRMATION OF BOOK-ENTRY TRANSFER
AND ALL OTHER REQUIRED DOCUMENTS) OR THE NOTICE OF GUARANTEED DELIVERY MUST BE
RECEIVED BY THE DEPOSITARY ON OR BEFORE THE EXPIRATION DATE.
 
                           IMPORTANT TAX INFORMATION
 
     Under federal income tax law, a shareholder whose tendered Shares are
accepted for payment is required to provide the Depositary with such
shareholder's correct TIN on Form W-9 below. If the Depositary is not provided
with the correct TIN, the Internal Revenue Service may subject the shareholder
or other payee to a $50.00 penalty. In addition, payments that are made to such
shareholder or other payee with respect to Shares purchased pursuant to the
Offer may be subject to backup withholding.
 
     Certain shareholders (including, among others, all corporations and certain
foreign individuals) are considered "exempt recipients" and are not subject to
these backup withholding and reporting requirements. In order for a foreign
individual to qualify as an exempt recipient, the shareholder must submit a Form
W-8, signed under penalties of perjury, attesting to that individual's exempt
status. A Form W-8 can be obtained from the Depositary. See the enclosed
"Guidelines for Certification of Taxpayer Identification Number on Substitute
Form W-9" for more instructions.
 
     If backup withholding applies, the Depositary is required to withhold 31%
of any such payments made to the shareholder or other payee. Backup withholding
is not an additional tax. Rather, the tax liability of persons subject to backup
withholding will be reduced by the amount of tax withheld. If withholding
results in an overpayment of taxes, a refund may be obtained.
 
PURPOSE OF FORM W-9
 
     To prevent backup withholding on payment made to a shareholder or other
payee with respect to Shares purchased pursuant to the Offer, the shareholder is
required to notify the Depositary of the shareholder's correct TIN by completing
the form below, certifying that the TIN provided on Form W-9 is correct (or that
such shareholder is awaiting a TIN) and that:
 
          (a) the shareholder has not been notified by the Internal Revenue
     Service that the shareholder is subject to backup withholding as a result
     of failure to report all interest or dividends; or
<PAGE>   13
 
          (b) the Internal Revenue Service has notified the shareholder that the
     shareholder is no longer subject to backup withholding.
 
     The shareholder is required to give the Depositary the TIN (e.g., social
security number or employer identification number) of the record owner of the
Shares. If the Shares are in more than one name or are not in the name of the
actual owner, consult the enclosed "Guidelines for Certification of Taxpayer
Identification Number on Form W-9" for additional guidance on which number to
report.
 
<TABLE>
- ----------------------------------------------------------------------------------------------------
PAYOR'S NAME: AMERICAN STOCK TRANSFER AND TRUST COMPANY
- ----------------------------------------------------------------------------------------------------
<S>                         <C>                                       <C>
 SUBSTITUTE                  PART 1 -- PLEASE PROVIDE YOUR TIN IN THE
 FORM W-9                    BOX AT RIGHT AND CERTIFY BY SIGNING AND  ------------------------------
 DEPARTMENT OF THE TREASURY  DATING BELOW                                 Social Security Number
 INTERNAL REVENUE SERVICE                                                         or

                                                                      ------------------------------
                                                                      Employer Identification Number
                            ------------------------------------------------------------------------
                             PART 2 -- Check the box if you are NOT subject to backup withholding
                             under the Internal Revenue Code because (a) I am (we are) exempt from 
                             backup withholding, or (b) I (we) have not been notified that I am 
                             (we are) subject to backup withholding as a result of failure to report
                             all interest or dividends or (c) the Internal Revenue Service has
 PAYER'S REQUEST FOR         notified me (us) that I am (we are) no longer subject to backup 
 TAXPAYER IDENTIFICATION     withholding.
 NUMBER ("TIN")
                            / / Correct         / / Not Correct 
                            ------------------------------------------------------------------------
                             CERTIFICATION -- Under penalties of                PART 3 --
                             perjury, I certify that the information         Awaiting TIN / /
                             provided on this form is true, correct,
                             and complete.
- ----------------------------------------------------------------------------------------------------
 Signature                                                              Date
          ------------------------------------------------------            -----------------------
- ----------------------------------------------------------------------------------------------------
</TABLE>
 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 31% OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER. PLEASE REVIEW
      THE ENCLOSED GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
      NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.
 
      YOU MUST COMPLETE THE FOLLOWING CERTIFICATE IF YOU CHECKED THE BOX IN PART
      3 OF FORM W-9.
<PAGE>   14
- ------------------------------------------------------------------------------- 
             CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER
 
     I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (a) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration Office or (b)
I intend to mail or deliver an application in the near future. I understand that
if I do not provide a taxpayer identification number within sixty (60) days, 31%
of all reportable payments made to me thereafter will be withheld, until I
provide a number.
                                                                       , 1996
- -------------------------------------------      ---------------------
              Signature                                    Date
- ------------------------------------------------------------------------------- 
 
                             The Information Agent:
 
                               MORROW & CO., INC.
                                909 Third Avenue
                                   20th Floor
                            New York, New York 10022
                                 (212) 754-8000
 
                                Call Toll Free:
                                 1-800-566-9061
              Banks and brokerage firms please call 1-800-662-5200
 
                      The Dealer Manager for the Offer is:
 
                         KEEFE, BRUYETTE & WOODS, INC.
                             Two World Trade Center
                            New York, New York 10048
                         (212) 323-8450 (Call Collect)

<PAGE>   1
                                                                 EXHIBIT 9(a)(3)
 
              NOT VALID UNLESS SIGNED BY AN ELIGIBLE INSTITUTION.
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                         NOTICE OF GUARANTEED DELIVERY
                           OF SHARES OF COMMON STOCK
               OFFER TO PURCHASE FOR CASH UP TO 2,500,000 SHARES
                              OF ITS COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
                      AT A PURCHASE PRICE NOT GREATER THAN
                     $24.00 NOR LESS THAN $21.00 PER SHARE
 
     This form or a facsimile copy of it must be used to accept the Offer (as
defined below) if:
 
(a) certificates for common stock, par value $.01 per share (the "Shares"),
    including the associated Rights (as defined herein), of Peoples Heritage
    Financial Group, Inc., a Maine corporation, are not immediately available;
    or
 
(b) the procedure for book-entry transfer cannot be completed on a timely basis;
    or
 
(c) time will not permit the Letter of Transmittal or other required documents
    to reach the Depositary before the Expiration Date (as defined in Section 1
    of the Offer to Purchase, as defined below).
 
     This form or a facsimile of it, signed and properly completed, may be
delivered by hand, mail, telegram or facsimile transmission to the Depositary by
the Expiration Date. See "The Offer -- Procedure for Tendering Shares" in the
Offer to Purchase.
 
                                  DEPOSITARY:
 
                   AMERICAN STOCK TRANSFER AND TRUST COMPANY
 
<TABLE>
    <S>                                                 <C>
                    By Mail:                               By Facsimile Transmission:
                 40 Wall Street                         (for Eligible Institutions Only)
            New York, New York 10005                             (718) 234-5001
    (Attention: Corporate Trust Department)                  Confirm by Telephone:
                                                                 (718) 921-8200
</TABLE>
 
                          By Hand/Overnight Delivery:
                                 40 Wall Street
                                   46th Floor
                            New York, New York 10005
                    (Attention: Corporate Trust Department)
 
     DELIVERY OF THIS INSTRUMENT TO AN ADDRESS OTHER THAN THOSE SHOWN ABOVE OR
TRANSMISSION OF INSTRUCTIONS TO A FACSIMILE NUMBER OTHER THAN THOSE LISTED ABOVE
DOES NOT CONSTITUTE A VALID DELIVERY.
<PAGE>   2
 
Ladies and Gentlemen:
 
     The undersigned hereby tenders to Peoples Heritage Financial Group, Inc.,
at the price per Share indicated below, net to the seller in cash, upon the
terms and subject to the conditions set forth in the Offer to Purchase, dated
September 10, 1996 (the "Offer to Purchase"), and the related Letter of
Transmittal (which together with the Offer to Purchase constitute the "Offer"),
receipt of which is hereby acknowledged,                Shares of common stock,
par value $.01 per share (including the associated Preferred Stock Purchase
Rights (the "Rights"), the "Shares"), pursuant to the guaranteed delivery
procedure set forth under "The Offer -- Procedures for Tendering Shares" in the
Offer to Purchase. Unless the Rights become exercisable or separately tradeable
prior to the Expiration Date, a tender of Shares also will constitute a tender
of the associated Rights. Unless the context requires otherwise, all references
herein to Shares include the associated Rights.

                   ------------------------------------------
 
PRICE (IN DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED.

                   ------------------------------------------
 
           If Shares are being tendered at more than one price, use a
        separate Notice of Guaranteed Delivery for each price specified.

                   ------------------------------------------
 
      Check only one box. If more than one box is checked, or if no box is
        checked (except as provided in the Odd Lot Instructions below),
                      there is no valid tender of Shares.

                   ------------------------------------------
 
           Shares tendered at price determined pursuant to the Offer
 
/ / The undersigned wants to maximize the chance of having Peoples Heritage
    Financial Group, Inc. purchase all the Shares the undersigned is tendering
    (subject to the possibility of proration). Accordingly, by checking this one
    box INSTEAD OF ONE OF THE PRICE BOXES BELOW, the undersigned hereby tenders
    Shares and is willing to accept the Purchase Price determined pursuant to
    the Offer. This action will result in receiving a price per share of as low
    as $21.00 or as high as $24.00.

                                      or
                   ------------------    ------------------
 
               Shares tendered at price determined by shareholder

<TABLE>
By checking one of the boxes below INSTEAD OF THE BOX ABOVE, the undersigned
hereby tenders Shares at the price checked. This action could result in none of
the Shares being purchased if the Purchase Price for the Shares is less than the
price checked.
 
Price (in dollars) per Share at which Shares are being tendered:
 
<S>            <C>            <C>
/ / $21.00     / / $22.25     / / $23.25
/ /  21.25     / /  22.50     / /  23.50
/ /  21.50     / /  22.75     / /  23.75
/ /  21.75     / /  23.00     / /  24.00
/ /  22.00
</TABLE>
<PAGE>   3
 
                                    ODD LOTS
 
     To be completed ONLY if Shares are being tendered by or on behalf of a
person owning beneficially, as of the close of business on September 9, 1996 and
who continue to own beneficially as of the Expiration Date, an aggregate of
fewer than 100 Shares.
 
     The undersigned either (check one):
 
        / / was the beneficial owner, as of the close of business on September
            9, 1996 of an aggregate of fewer than 100 Shares, all of which are
            being tendered, or
 
        / / is a broker, dealer, commercial bank, trust company or other nominee
            which
 
    (a) is tendering, for the beneficial owners thereof, Shares with respect to
        which it is the record owner, and
 
    (b) believes, based upon representations made to it by such beneficial
        owners, that each such person was the beneficial owner, as of the close
        of business on September 9, 1996, of an aggregate of fewer than 100
        Shares and is tendering all of such Shares.
 
- --------------------------------------------------------------------------------
Certificate Nos. (if available):
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
 
If Shares will be tendered by book-entry transfer, check one box:
/ /  The Depository Trust Company
/ /  Philadelphia Depository Trust Company
 
Account Number:
 
- --------------------------------------------------------------------------------
 
Name(s):
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
                              PLEASE TYPE OR PRINT
 
Address(es):
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
 
Area Code and Telephone Number:
                               -------------------------------------------------
Sign Here:
          ----------------------------------------------------------------------
Dated:               , 1996
      ---------------
- --------------------------------------------------------------------------------
<PAGE>   4

- --------------------------------------------------------------------------------
                                   GUARANTEE
                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)
 
     The undersigned, a member firm of a registered national securities
exchange, a member of the National Association of Securities Dealers, Inc., or a
commercial bank, trust company, savings association or credit union having an
office or correspondent in the United States (each, an "Eligible Institution"),
hereby (i) represents that the undersigned has a net long position in Shares or
equivalent securities within the meaning of Rule 14e-4 promulgated under the
Securities Exchange Act of 1934, as amended, at least equal to the Shares
tendered, (ii) represents that such tender of Shares complies with Rule 14e-4
and (iii) guarantees that either the certificates representing the Shares
tendered hereby in proper form for transfer, or timely confirmation of the
book-entry transfer of such Shares into the Depositary's account at The
Depository Trust Company or the Philadelphia Depository Trust Company (pursuant
to the procedures set forth under "The Offer -- Procedure for Tendering Shares"
in the Offer to Purchase), together with a properly completed and duly executed
Letter of Transmittal (or facsimile thereof) with any required signature
guarantee and any other documents required by the Letter of Transmittal, will be
received by the Depositary at one of its addresses set forth above within five
New York Stock Exchange, Inc. trading days after the date of execution hereof.
 
Name of Firm:
             -----------------------------        -----------------------------
                                                  AUTHORIZED SIGNATURE

Address:                                          Name:
        ----------------------------------             ------------------------
                                                  Title:
                                                        -----------------------
Zip Code
         ---------------------------------
Area Code and                                     Dated:                , 1996
Telephone Number:                                       ----------------
                 -------------------------
 
DO NOT SEND SHARE CERTIFICATES WITH THIS NOTICE. SHARE CERTIFICATES SHOULD BE
SENT WITH YOUR LETTER OF TRANSMITTAL.                                          
- --------------------------------------------------------------------------------

<PAGE>   1
                                                                 EXHIBIT 9(a)(4)
 
                                                   Keefe, Bruyette & Woods, Inc.
                                                          Two World Trade Center
                                                                      85th Floor
                                                        New York, New York 10048
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                           OFFER TO PURCHASE FOR CASH
                   UP TO 2,500,000 SHARES OF ITS COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
                      AT A PURCHASE PRICE NOT GREATER THAN
                     $24.00 NOR LESS THAN $21.00 PER SHARE
 
                                                              September 10, 1996
 
To Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees:
 
     Peoples Heritage Financial Group, Inc. (the "Company"), a Maine
corporation, has appointed us to act as Dealer Manager in connection with its
offer to purchase for cash up to 2,500,000 shares of its common stock, par value
$.01 per share (including the associated Preferred Stock Purchase Rights (the
"Rights"), the "Shares"), at prices, not greater than $24.00 nor less than
$21.00 per Share, upon the terms and subject to the conditions set forth in its
Offer to Purchase dated September 10, 1996 and in the related Letter of
Transmittal (which together constitute the "Offer"). We enclose the materials
listed below relating to the Offer. Unless the Rights become exercisable or
separately tradeable prior to the Expiration Date (as defined in the section
titled "The Offer -- Number of Shares; Proration" in the Offer to Purchase), a
tender of Shares also will constitute a tender of the associated Rights. Unless
the context requires otherwise, all references herein to Shares include the
associated Rights.
 
     The Company will determine a single per Share price (not greater than
$24.00 nor less than $21.00 per Share) (the "Purchase Price"), that it will pay
for Shares validly tendered pursuant to the Offer taking into account the number
of Shares so tendered and the prices specified by tendering shareholders. The
Company will select the Purchase Price which will allow it to buy 2,500,000
Shares (or such lesser number of Shares as are validly tendered at prices not
greater than $24.00 nor less than $21.00 per Share) pursuant to the Offer. All
Shares validly tendered at prices at or below the Purchase Price will be
purchased at the Purchase Price, net to the seller in cash, upon the terms and
subject to the conditions of the Offer, including the proration terms thereof.
See "The Offer -- Number of Shares; Proration" in the Offer to Purchase.
 
     If, prior to the Expiration Date, more than 2,500,000 Shares (or such
greater number of Shares as the Company may elect to purchase) are validly
tendered, the Company will, upon the terms and subject to the conditions of the
Offer, accept Shares for purchase first from Odd Lot Owners (as defined under
"The Offer -- Tenders by Owners of Fewer Than 100 Shares" in the Offer to
Purchase) who validly tender their Shares at or below the Purchase Price and
then on a pro rata basis from all other shareholders whose Shares are validly
tendered at or below the Purchase Price.
 
     The Offer is not conditioned on any minimum number of Shares being
tendered. The Offer is, however, subject to certain other conditions set forth
in the Offer. See "The Offer -- Certain Conditions of the Offer" in the Offer to
Purchase.
 
     For your information and for forwarding to your clients for whom you hold
Shares registered in your name or in the name of your nominee, we are enclosing
the following documents:
 
          1. Offer to Purchase dated September 10, 1996;
 
          2. Letter to Clients which may be sent to your clients for whose
     accounts you hold Shares registered in your name or in the name of your
     nominee, with space provided for obtaining such clients' instructions with
     regard to the Offer;
<PAGE>   2
 
          3. Letter, dated September 10, 1996, from William J. Ryan, Chairman,
     President and Chief Executive Officer of the Company, to the shareholders
     of the Company;
 
          4. Letter of Transmittal for your use and for the information of your
     clients (together with Substitute Form W-9 and guidelines); and
 
          5. Notice of Guaranteed Delivery to be used to accept the Offer if
     Share certificates and all other required documents cannot be delivered to
     the Depositary by the Expiration Date or if the procedure for book-entry
     transfer cannot be completed on a timely basis.
 
     WE URGE YOU TO CONTACT YOUR CLIENTS AS PROMPTLY AS POSSIBLE. THE OFFER,
PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY
TIME, ON MONDAY, OCTOBER 7, 1996, UNLESS THE OFFER IS EXTENDED.
 
     No fees or commissions will be payable to brokers, dealers or any other
persons for soliciting tenders of Shares pursuant to the Offer. The Company
will, however, upon request, reimburse you for customary mailing and handling
expenses incurred by you in forwarding any of the enclosed materials to the
beneficial owners of Shares held by you as a nominee or in a fiduciary capacity.
The Company will pay or cause to be paid any stock transfer taxes applicable to
its purchase of Shares, except as otherwise provided in Instruction 7 of the
Letter of Transmittal.
 
     In order to take advantage of the Offer, a duly executed and properly
completed Letter of Transmittal and any other required documents should be sent
to the Depositary with either certificate(s) representing the tendered Shares or
confirmation of their book-entry transfer, all in accordance with the
instructions set forth in the Letter of Transmittal and the Offer to Purchase.
 
     As described under "The Offer -- Procedure for Tendering Shares" in the
Offer to Purchase, tenders may be made without the concurrent deposit of stock
certificates or concurrent compliance with the procedure for book-entry
transfer, if such tenders are made by or through a broker or dealer which is a
member firm of a registered national securities exchange or a member of the
National Association of Securities Dealers, Inc. or a commercial bank, trust
company, savings association or credit union having an office, branch or agency
in the United States. Certificates for Shares so tendered (or a confirmation of
a book-entry transfer of such Shares into the Depositary's account at one of the
"Book-Entry Transfer Facilities" described under "The Offer -- Procedure for
Tendering Shares" in the Offer to Purchase), together with a properly completed
and duly executed Letter of Transmittal and any other documents required by the
Letter of Transmittal, must be received by the Depositary within five over-the-
counter trading days after timely receipt by the Depositary of a properly
completed and duly executed Notice of Guaranteed Delivery.
 
     Any inquiries you may have with respect to the Offer should be addressed to
the Dealer Manager or to the Information Agent at their respective addresses and
telephone numbers set forth on the back cover page of the Offer to Purchase.
 
     Additional copies of the enclosed materials may be obtained from the
Information Agent, Morrow & Co., Inc., telephone: (212) 754-8000 or toll free
1-800-662-5200.
 
                                         Very truly yours,
 
                                         KEEFE, BRUYETTE & WOODS, INC.
 
NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR
ANY OTHER PERSON AS THE AGENT OF THE COMPANY, THE DEALER MANAGER, THE
INFORMATION AGENT OR THE DEPOSITARY, OR AUTHORIZE YOU OR ANY OTHER PERSON TO USE
ANY DOCUMENT OR MAKE ANY STATEMENT ON BEHALF OF ANY OF THEM IN CONNECTION WITH
THE OFFER OTHER THAN THE ENCLOSED DOCUMENTS AND THE STATEMENTS CONTAINED
THEREIN.

<PAGE>   1
                                                                 EXHIBIT 9(a)(5)
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
 
                           OFFER TO PURCHASE FOR CASH
                   UP TO 2,500,000 SHARES OF ITS COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
                      AT A PURCHASE PRICE NOT GREATER THAN
                     $24.00 NOR LESS THAN $21.00 PER SHARE
 
                                                              September 10, 1996
 
To Our Clients:
 
     Enclosed for your consideration are the Offer to Purchase, dated September
10, 1996, and the related Letter of Transmittal (which together constitute the
"Offer"), in connection with the offer by Peoples Heritage Financial Group, Inc.
(the "Company"), a Maine corporation, to purchase for cash up to 2,500,000
shares of its common stock, par value $.01 per share (including the associated
Preferred Stock Purchase Rights (the "Rights"), the "Shares"), at prices not
greater than $24.00 nor less than $21.00 per Share, upon the terms and subject
to the conditions of the Offer. Unless the Rights become exercisable or
separately tradeable prior to the Expiration Date (as defined under "The
Offer -- Number of Shares; Proration" in the Offer to Purchase), a tender of
Shares will also constitute a tender of the associated Rights. Unless the
context requires otherwise, all references herein to Shares include the
associated Rights.
 
     The Company will determine a single per Share price (not greater than
$24.00 nor less than $21.00 per Share) (the "Purchase Price") that it will pay
for Shares validly tendered pursuant to the Offer taking into account the number
of Shares so tendered and the prices specified by tendering shareholders. The
Company will select the Purchase Price which will allow it to buy 2,500,000
Shares (or such lesser number of Shares as are validly tendered at prices not
greater than $24.00 nor less than $21.00 per Share) pursuant to the Offer. All
Shares validly tendered prior to the Expiration Date at prices at or below the
Purchase Price will be purchased at the Purchase Price, net to the seller in
cash, upon the terms and subject to the conditions of the Offer, including the
proration terms thereof. The Company will return all other Shares, including
Shares tendered at prices greater than the Purchase Price and Shares not
purchased because of proration. See "The Offer -- Number of Shares; Proration"
in the Offer to Purchase.
 
     If, prior to the Expiration Date, more than 2,500,000 Shares (or such
greater number of Shares as the Company may elect to purchase) are validly
tendered, the Company will, upon the terms and subject to the conditions of the
Offer, accept Shares for purchase first from Odd Lot Owners (as defined under
"The Offer -- Tenders by Owners of Fewer Than 100 Shares" in the Offer to
Purchase) who validly tender their Shares at or below the Purchase Price and
then on a pro rata basis from all other shareholders whose Shares are validly
tendered at or below the Purchase Price.
 
     WE ARE THE HOLDER OF RECORD OF SHARES HELD FOR YOUR ACCOUNT. AS SUCH, WE
ARE THE ONLY ONE WHO CAN TENDER YOUR SHARES, AND THEN ONLY PURSUANT TO YOUR
INSTRUCTIONS. WE ARE SENDING YOU THE LETTER OF TRANSMITTAL FOR YOUR INFORMATION
ONLY; YOU CANNOT USE IT TO TENDER SHARES WE HOLD FOR YOUR ACCOUNT.
 
     Please instruct us as to whether you wish us to tender any or all of the
Shares we hold for your account on the terms and subject to the conditions of
the Offer.
 
     We call your attention to the following:
 
          1. You may tender Shares at prices (in multiples of $.25), not greater
     than $24.00 nor less than $21.00 per Share, as indicated in the attached
     Instruction Form, net to you in cash.
 
          2. The Offer is not conditioned on any minimum number of Shares being
     tendered. The Offer is, however, subject to certain other conditions set
     forth in the Offer.
<PAGE>   2
 
          3. The Offer, proration period and withdrawal rights will expire at
     5:00 p.m., New York City time, on Monday, October 7, 1996, unless the
     Company extends the Offer.
 
          4. The Offer is for up to 2,500,000 Shares, constituting approximately
     9.9% of the Shares outstanding as of September 10, 1996.
 
          5. Tendering shareholders will not be obligated to pay any brokerage
     commissions, solicitation fees or, subject to instruction 7 of the Letter
     of Transmittal, stock transfer taxes on the Company's purchase of Shares
     pursuant to the Offer.
 
          6. If you owned beneficially as of the close of business on September
     9, 1996 and continued to own beneficially as of the Expiration Date, an
     aggregate of fewer than 100 Shares and you instruct us to tender on your
     behalf all such Shares at or below the Purchase Price before the expiration
     of the Offer and check the box captioned "Odd Lots" in the attached
     Instruction Form, the Company, upon the terms and subject to the conditions
     of the Offer, will accept all such Shares for purchase before proration, if
     any, of the purchase of other Shares tendered at or below the Purchase
     Price.
 
          7. If you wish to tender portions of your Shares at different prices
     you must complete a separate Instruction Form for each price at which you
     wish to tender each such portion of your Shares. We must submit separate
     Letters of Transmittal on your behalf for each price you will accept.
 
     If you wish to have us tender any or all of your shares, please so instruct
us by completing, executing, detaching and returning to us the attached
Instruction Form. An envelope to return your Instruction Form to us is enclosed.
If you authorize us to tender your Shares, we will tender all such Shares unless
you specify otherwise on the attached Instruction Form.
 
     YOUR INSTRUCTION FORM SHOULD BE FORWARDED TO US IN AMPLE TIME TO PERMIT US
TO SUBMIT A TENDER ON YOUR BEHALF ON OR BEFORE THE EXPIRATION DATE OF THE OFFER.
THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS EXPIRE AT 5:00 P.M., NEW YORK
CITY TIME, ON MONDAY, OCTOBER 7, 1996, UNLESS THE COMPANY EXTENDS THE OFFER.
 
     As described under "The Offer -- Number of Shares; Proration" in the Offer
to Purchase, if before the Expiration Date more than 2,500,000 Shares (or such
greater number of Shares as the Company elects to purchase) are validly tendered
at or below the Purchase Price, the Company will accept Shares for purchase at
the Purchase Price in the following order of priority:
 
          (a) first, all Shares validly tendered at or below the Purchase Price
     prior to the Expiration Date by any Odd Lot Owner who:
 
             (1) tenders all Shares beneficially owned by such Odd Lot Owner at
        or below the Purchase Price (partial tenders will not qualify for this
        preference); and
 
             (2) completes the section captioned "Odd Lots" on the Letter of
        Transmittal and, if applicable, on the Notice of Guaranteed Delivery;
        and
 
          (b) then, after purchase of all of the foregoing Shares, all other
     Shares validly tendered at or below the Purchase Price before the
     Expiration Date on a pro rata basis, if necessary (with adjustments to
     avoid purchases of fractional Shares).
 
     The Offer is not being made to, nor will the Company accept tenders from,
holders of Shares in any jurisdiction in which the Offer or its acceptance would
not comply with the securities or Blue Sky laws of such jurisdiction. The
Company is not aware of any jurisdiction in which the making of the Offer or the
tender of Shares would not be in compliance with the laws of such jurisdictions.
However, the Company reserves the right to exclude holders in any jurisdiction
in which it is asserted that the Offer cannot lawfully be made. So long as the
Company makes a good faith effort to comply with any state law deemed applicable
to the Offer, if it cannot do so, the Company believes that the exclusion of
holders residing in such jurisdiction is permitted under Rule 13e-4(f)(9)
promulgated under the Exchange Act. In any jurisdiction the securities or Blue
Sky laws of which require the Offer to be made by a licensed broker or dealer,
the Offer shall be deemed to be made on the Company's behalf by Keefe, Bruyette
& Woods, Inc., as Dealer Manager, or one or more registered brokers or dealers
licensed under the laws of such jurisdiction.
<PAGE>   3
 
                                INSTRUCTION FORM
 
                 WITH RESPECT TO THE OFFER TO PURCHASE FOR CASH
                     UP TO 2,500,000 SHARES OF COMMON STOCK
         (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS) OF
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
                      AT A PURCHASE PRICE NOT GREATER THAN
                     $24.00 NOR LESS THAN $21.00 PER SHARE
 
     The undersigned acknowledge(s) receipt of your letter and the enclosed
Offer to Purchase dated September 10, 1996 and the related Letter of Transmittal
(which together constitute the "Offer"), in connection with the offer by Peoples
Heritage Financial Group, Inc. (the "Company"), a Maine corporation, to purchase
for cash up to 2,500,000 shares of its common stock, par value $.01 per share
(including the associated Preferred Stock Purchase Rights (the "Rights"), the
"Shares"), at prices not greater than $24.00 nor less than $21.00 per Share,
upon the terms and subject to the conditions of the Offer. Unless the Rights
become exercisable or separately tradeable prior to the Expiration Date (as
defined under "The Offer -- Number of Shares; Proration" in the Offer to
Purchase), a tender of Shares also will constitute a tender of the associated
Rights. Unless the context requires otherwise, all references herein to Shares
include the associated Rights.
 
     The Company will determine a single per Share price (not greater than
$24.00 nor less than $21.00 per Share) (the "Purchase Price") that it will pay
for Shares validly tendered pursuant to the Offer taking into account the number
of Shares so tendered and the prices specified by tendering shareholders. The
Company will select the Purchase Price which will allow it to buy 2,500,000
Shares (or such lesser number of Shares as are validly tendered at prices not
greater than $24.00 nor less than $21.00 per Share) pursuant to the Offer. All
Shares validly tendered at prices at or below the Purchase Price will be
purchased at the Purchase Price, net to the seller in cash, upon the terms and
subject to the conditions of the Offer, including the proration terms thereof.
The Company will return all other Shares, including Shares tendered at prices
greater than the Purchase Price and Shares not purchased because of proration.
See "The Offer -- Number of Shares; Proration" in the Offer to Purchase.
 
     The undersigned hereby instruct(s) you to tender to the Company the number
of Shares indicated below or, if no number is indicated, all Shares you hold for
the account of the undersigned, at the price per Share indicated below, pursuant
to the terms and subject to the conditions of the Offer.
<PAGE>   4
 
   Aggregate number of Shares to be tendered by you for us:           Shares*

                   ------------------------------------------
 
        PRICE (IN DOLLARS) PER SHARE AT WHICH SHARES ARE BEING TENDERED.

                   ------------------------------------------
 
           If Shares are being tendered at more than one price, use a
                           separate Instruction Form.

                   ------------------------------------------
 
                              Check only one box.
                      If more than one box is checked, or
     if no box is checked (except as provided in the Odd Lot Instructions)
                there is no valid instruction to tender Shares.

                   ------------------------------------------
 
           Shares tendered at price determined pursuant to the Offer
 
/ / The undersigned wants to maximize the chance of having Peoples Heritage
    Financial Group, Inc. purchase all the Shares the undersigned is tendering
    (subject to the possibility of proration). Accordingly, by checking this one
    box INSTEAD OF ONE OF THE PRICE BOXES BELOW, the undersigned hereby tenders
    Shares and is willing to accept the Purchase Price determined pursuant to
    the Offer. This action will result in receiving a price per share as low as
    $21.00 or as high as $24.00.
 
                                      or
                   ------------------    ------------------
 
               Shares tendered at price determined by shareholder
 

<TABLE>
By checking one of the boxes below INSTEAD OF THE BOX ABOVE, the undersigned
hereby tenders Shares at the price checked. This action could result in none of
the Shares being purchased if the Purchase Price for the Shares is less than the
price checked.
 
Price (in dollars) per Share at which Shares are being tendered:
 
                   <S>            <C>            <C>
                   / / $21.00     / / $22.25     / / $23.25
                   / /  21.25     / /  22.50     / /  23.50
                   / /  21.50     / /  22.75     / /  23.75
                   / /  21.75     / /  23.00     / /  24.00
                   / /  22.00
</TABLE>
 
                                    ODD LOTS
/ / By checking this box, the undersigned represents that the undersigned owned
    beneficially, as of the close of business on September 9, 1996, and will
    continue to own beneficially as of the Expiration Date, an aggregate of
    fewer than 100 Shares and is instructing the holder to tender all such
    Shares.

- --------------------------------------------------------------------------------
                                 SIGNATURE BOX
 
Signature(s)
- --------------------------------------------------------------------------------
 
Dated
- --------------------------------------------------------------------------------
 
Name(s) and Address(es) (Please Print)
 
- --------------------------------------------------------------------------------
 
- --------------------------------------------------------------------------------
 
Area Code and Telephone Number
- ---------------------------------------------------------------------------
 
Taxpayer Identification or Social Security Number
- -----------------------------------------------------------
- --------------------------------------------------------------------------------
 
- ---------------
* Unless otherwise indicated, all of the Shares, including the associated
  Rights, held for the account of the undersigned will be tendered.

<PAGE>   1
                                                                 EXHIBIT 9(a)(6)
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
SECTION REFERENCES ARE TO THE INTERNAL REVENUE CODE.
 
     Purpose of Form. -- A person who is required to file an information return
with the IRS must obtain your correct TIN to report income paid to you, real
estate transactions, mortgage interest you paid, the acquisition or abandonment
of secured property, or contributions you made to an IRA. Use Form W-9 to
furnish your correct TIN to the requester (the person asking you to furnish your
TIN) and, when applicable, (1) to certify that the TIN you are furnishing is
correct (or that you are waiting for a number to be issued), (2) to certify that
you are not subject to backup withholding, and (3) to claim exemption from
backup withholding if you are an exempt payee. Furnishing your correct TIN and
making the appropriate certifications will prevent payments from being subject
to backup withholding.
 
     Note: If a requester gives you a form other than a W-9 to request your TIN,
you must use the requester's form.
 
     How To Obtain a TIN. -- If you do not have a TIN, apply for one
immediately. To apply, get Form SS-5, Application for a Social Security Card
(for individuals), from your local office of the Social Security Administration,
or Form SS-4, Application for Employer Identification Number (for businesses and
all other entities), from your local IRS office.
 
     To complete Form W-9 if you do not have a TIN, write "Applied for" in the
space for the TIN in Part I (or check box 2 of Substitute Form W-9), sign and
date the form, and give it to the requester. Generally, you must obtain a TIN
and furnish it to the requester by the time of payment. If the requester does
not receive your TIN by the time of payment, backup withholding, if applicable,
will begin and continue until you furnish your TIN to the requester.
 
     Note: Writing "Applied for" (or checking box 2 of the Substitute Form W-9)
on the form means that you have already applied for a TIN or that you intend to
apply for one in the near future.
 
     As soon as you receive your TIN, complete another Form W-9, include your
TIN, sign and date the form, and give it to the requester.
 
     What Is Backup Withholding? -- Persons making certain payments to you after
1992 are required to withhold and pay to the IRS 31% of such payments under
certain conditions. This is called "backup withholding." Payments that could be
subject to backup withholding include interest, dividends, broker and barter
exchange transactions, rents, royalties, nonemployee compensation, and certain
payments from fishing boat operators, but do not include real estate
transactions.
 
     If you give the requester your correct TIN, make the appropriate
certifications, and report all your taxable interest and dividends on your tax
return, your payments will not be subject to backup withholding. Payments you
receive will be subject to backup withholding if:
 
          1. You do not furnish your TIN to the requester, or
 
          2. The IRS notifies the requester that you furnished an incorrect TIN,
     or
 
          3. You are notified by the IRS that you are subject to backup
     withholding because you failed to report all your interest and dividends on
     your tax return (for reportable interest and dividends only), or
 
          4. You do not certify to the requester that you are not subject to
     backup withholding under 3 above (for reportable interest and dividend
     accounts opened after 1983 only), or
 
          5. You do not certify your TIN. This applies only to reportable
     interest, dividend, broker, or barter exchange accounts opened after 1983,
     or broker accounts considered inactive in 1983.
 
     Except as explained in 5 above, other reportable payments are subject to
backup withholding only if 1 or 2 above applies. Certain payees and payments are
exempt from backup withholding and information reporting.
<PAGE>   2
 
     See "Payees and Payments Exempt From Backup Withholding" below, and "Exempt
Payees and Payments" under "Signing the Certification" below, if you are an
exempt payee.
 
     Payees and Payments Exempt From Backup Withholding. -- The following is a
list of payees exempt from backup withholding and for which no information
reporting is required. For interest and dividends, all listed payees are exempt
except item (9). For broker transactions, payees listed in (1) through (13) and
a person registered under the Investment Advisers Act of 1940 who regularly acts
as a broker are exempt. Payments subject to reporting under sections 6041 and
6041A are generally exempt from backup withholding only if made to payees
described in items (1) through (7), except a corporation that provides medical
and health care services or bills and collects payments for such services is not
exempt from backup withholding or information reporting. Only payees described
in items (2) through (6) are exempt from backup withholding for barter exchange
transactions, patronage dividends, and payments by certain fishing boat
operators.
 
     (1) A corporation. (2) An organization exempt from tax under section
501(a), or an IRA, or a custodial account under section 403(b)(7). (3) The
United States or any of its agencies or instrumentalities. (4) A state, the
District of Columbia, a possession of the United States, or any of their
political subdivisions or instrumentalities. (5) A foreign government or any of
its political subdivisions, agencies, or instrumentalities. (6) An international
organization or any of its agencies or instrumentalities. (7) A foreign central
bank of issue. (8) A dealer in securities or commodities required to register in
the United States or a possession of the United States. (9) A futures commission
merchant registered with the Commodity Futures Trading Commission. (10) A real
estate investment trust. (11) An entity registered at all times during the tax
year under the Investment Company Act of 1940. (12) A common trust fund operated
by a bank under section 584(a). (13) A financial institution. (14) A middleman
known in the investment community as a nominee or listed in the most recent
publication of the American Society of Corporate Secretaries, Inc., Nominee
List. (15) A trust exempt from tax under section 664 or described in section
4947.
 
     Payments of dividend and patronage dividends generally not subject to
backup withholding include the following:
 
     - Payments to nonresident aliens subject to withholding under section 1441.
 
     - Payments to partnerships not engaged in a trade or business in the United
       States and that have at least one nonresident partner.
 
     - Payments of patronage dividends not paid in money.
 
     - Payments made by certain foreign organizations.
 
     Payments of interest generally not subject to backup withholding include
the following:
 
     - Payments of interest on obligations issued by individuals.
 
     Note: You may be subject to backup withholding if this interest is $600 or
more and is paid in the course of the payer's trade or business and you have not
provided your correct TIN to the payer.
 
     - Payments of tax-exempt interest (including exempt-interest dividends
       under section 852).
 
     - Payments described in section 6049(b)(5) to nonresident aliens.
 
     - Payments on tax-free covenant bonds under section 1451.
 
     - Payments made by certain foreign organizations.
 
     - Mortgage interest paid by you.
 
     Payments that are not subject to information reporting are also not subject
to backup withholding. For details, see sections 6041, 6041A(a), 6042, 6044,
6045, 6049, 6050A, and 6050N, and their regulations.
 
PENALTIES
 
     Failure To Furnish TIN. -- If you fail to furnish your correct TIN to a
requester, you will be subject to a penalty of $50 for each such failure unless
your failure is due to reasonable cause and not to willful neglect.
<PAGE>   3
 
     Civil Penalty for False Information With Respect to Withholding. -- If you
make a false statement with no reasonable basis that results in no backup
withholding, you are subject to a $500 penalty.
 
     Criminal Penalty for Falsifying Information. -- Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.
 
     Misuse of TINS. -- If the requester discloses or uses TINs in violation of
Federal law, the requester may be subject to civil and criminal penalties.
 
SPECIFIC INSTRUCTIONS
 
     Name. -- If you are an individual, you must generally provide the name
shown on your Social Security card. However, if you have changed your last name,
for instance, due to marriage, without informing the Social Security
Administration of the name change, please enter your first name, the last name
shown on your Social Security card, and your new last name.
 
     If you are a sole proprietor, you must furnish your individual name and
either your SSN or EIN. You may also enter your business name or "doing business
as" name on the business name line. Enter your name(s) as shown on your Social
Security card and/or as it was used to apply for your EIN on Form SS-4.
 
SIGNING THE CERTIFICATION
 
     1. Interest, Dividend, Broker and Barter Exchange Accounts Opened Before
1984 and Broker Accounts Considered Active During 1983.  You are required to
furnish your correct TIN, but you are not required to sign the certification.
 
     2. Interest, Dividend, Broker, and Barter Exchange Accounts Opened After
1983 and Broker Accounts Considered Inactive During 1983.  You must sign the
certification or backup withholding will apply. If you are subject to backup
withholding and you are merely providing your correct TIN to the requester, you
must cross out item 2 in the certification before signing the form.
 
     3. Real Estate Transactions.  You must sign the certification. You may
cross out item 2 of the certification.
 
     4. Other Payments.  You are required to furnish your correct TIN, but you
are not required to sign the certification unless you have been notified of an
incorrect TIN. Other payments include payments made in the course of the
requester's trade or business for rents, royalties, goods (other than bills for
merchandise), medical and health care services, payments to a nonemployee for
services (including attorney and accounting fees), and payments to certain
fishing boat crew members.
 
     5. Mortgage Interest Paid by You, Acquisition or Abandonment of Secured
Property, IRA Contributions.  You are required to furnish your correct TIN, but
you are not required to sign the certification.
 
     6. Exempt Payees and Payments.  If you are exempt from backup withholding,
you should complete this form to avoid possible erroneous backup withholding.
Enter your correct TIN in Part I, write "EXEMPT" in the block in Part II, and
sign and date the form. If you are a nonresident alien or foreign entity not
subject to backup withholding, give the requester a complete Form W-8,
Certificate of Foreign Status.
 
     7. TIN "Applied for."  Follow the instructions under "How to Obtain a TIN"
on page 1, and sign and date this form.
 
     Signature. -- For a joint account, only the person whose TIN is shown in
Part I should sign.
 
     Privacy Act Notice. -- Section 6109 requires you to furnish your correct
TIN to persons who must file information returns with the IRS to report
interest, dividends, and certain other income paid to you, mortgage interest you
paid, the acquisition or abandonment of secured property, or contributions you
made to an IRA. The IRS uses the numbers for identification purposes and to help
verify the accuracy of your tax return. You must provide your TIN whether or not
you are required to file a tax return. Payers must generally withhold 31% of
taxable interest, dividend, and certain other payments to a payee who does not
furnish a TIN to a payer. Certain penalties may also apply.
<PAGE>   4
<TABLE>
 
                   WHAT NAME AND NUMBER TO GIVE THE REQUESTER
<CAPTION>
 
For this type of account:                                                   Give name and SSN of:
<S>  <C>                                                                    <C>
  1. Individual...........................................................  The individual
  2. Two or more individuals (joint account)..............................  The actual owner of the
                                                                            account or, if combined funds,
                                                                            the first individual on the
                                                                            account(1)
  3. Custodian account of a minor (Uniform Gift to Minors Act)............  The minor(2)
  4. a. The usual revocable savings trust (grantor is also trustee).......  The grantor-trustee(1)
     b. So-called trust account that is not a legal or valid trust under    The actual owner(1)
        state law.........................................................
  5. Sole proprietorship..................................................  The owner(3)
For this type of account:                                                   Give name and EIN of:
  6. Sole proprietorship..................................................  The owner(3)
  7. A valid trust, estate, or pension trust..............................  Legal entity(4)
  8. Corporate............................................................  The corporation
  9. Association, club, religious, charitable, educational, or other
     tax-exempt organization..............................................  The organization
 10. Partnership..........................................................  The partnership
 11. A broker or registered nominee.......................................  The broker or nominee
 12. Account with the Department of Agriculture in the name of a public
     entity (such as a state or local government, school district or
     prison) that receives agriculture program payments...................  The public entity

<FN> 
- ---------------
(1) List first and circle the name of the person whose number you furnish.
 
(2) Circle the minor's name and furnish the minor's SSN.
 
(3) Show your individual name. You may also enter your business name. You may
    use your SSN or EIN.
 
(4) List first and circle the name of the legal trust, estate, or pension trust.
    (Do not furnish the TIN of the personal representative or trustee unless the
    legal entity itself is not designated in the account title.)

</TABLE>
 
     Note: If no name is circled when there is more than one name, the number
           will be considered to be that of the first name listed.

<PAGE>   1
 
                           ['PEOPLES HERITAGE LOGO']
 
                                                              September 10, 1996
 
To Our Shareholders:
 
     We are pleased to inform you that Peoples Heritage Financial Group, Inc. is
offering to purchase up to 2,500,000 shares (representing approximately 9.9% of
the currently outstanding shares) of its common stock (including associated
Preferred Stock Purchase Rights) from its shareholders through a tender offer at
prices not greater than $24.00 nor less than $21.00 per share (the "Offer").
 
     The Company is conducting the Offer through a procedure commonly known as a
"Dutch Auction." This procedure allows you to select the price within the above
price range at which you are willing to sell some or all of your shares to the
Company. Based upon the number of shares tendered and the prices specified by
the tendering shareholders, the Company will determine the single per share
price within the above range that will allow it to purchase up to 2,500,000
shares (or such lesser number of shares that are validly tendered). All of the
shares that are validly tendered at prices at or below that purchase price will,
subject to possible proration, be purchased at that purchase price, net in cash
to the selling shareholder. All other shares which have been tendered and not
purchased will be returned to the shareholder. The Offer is being made in
connection with the Company's proposed acquisition of Family Bancorp and is not
conditioned on any minimum number of shares being tendered.
 
     The Offer is explained in detail in the enclosed Offer to Purchase and
Letter of Transmittal. If you wish to tender your shares, detailed instructions
are included in the enclosed materials. We encourage you to read these materials
carefully before making any decision with respect to the Offer. Please note that
the Offer is scheduled to expire at 5:00 p.m. on Monday, October 7, 1996, unless
extended by the Company. Neither the Company nor its Board of Directors makes
any recommendation to any shareholder as to whether to tender or refrain from
tendering shares.
 
     If you have any questions regarding the enclosed materials, please do not
hesitate to call Morrow & Co., Inc., which the Company has retained as
Information Agent in connection with the Offer. Morrow's toll-free number is
1-800-566-9061.
 
                                         Sincerely,
                                         LOGO
                                         William J. Ryan
                                         Chairman of the Board, President
                                         and Chief Executive Officer

<PAGE>   1
 
                           ['PEOPLES HERITAGE LOGO']
 
                          IMMEDIATE ATTENTION REQUIRED
 
                                                              September 10, 1996
 
                   Re: Direction Concerning Tender of Shares
 
To: Participants in the Thrift Incentive Plan
    of Peoples Heritage Financial Group, Inc.
 
     Enclosed are materials that require your immediate attention. They describe
matters directly affecting your interest in the Thrift Incentive Plan ("TIP)
maintained by Peoples Heritage Financial Group, Inc. (the "Company"). Read all
the materials carefully. You will need to complete the enclosed Direction Form
and return it in the postage paid envelope provided. THE DEADLINE FOR RECEIPT OF
YOUR COMPLETED DIRECTION FORM IS 5:00 P.M., NEW YORK CITY TIME, ON MONDAY,
OCTOBER 7, 1996 (UNLESS EXTENDED). YOU SHOULD COMPLETE THE FORM AND RETURN IT
EVEN IF YOU DECIDE NOT TO PARTICIPATE IN THE TRANSACTION DESCRIBED IN THE
MATERIALS.
 
     The remainder of this letter summarizes the transaction and your rights and
options under the TIP, but you also should review the more detailed explanation
provided in the other materials.
 
BACKGROUND
 
     The Company has made a tender offer to purchase up to 2,500,000 shares of
its Common Stock (the "Offer"). The objectives of the purchase, and financial
and other information relating to the offer, are described in detail in the
enclosed Offer to Purchase, which is being provided to all shareholders of the
Company.
 
     As a participant who has shares of common stock of the Company allocated to
your account under the TIP, you are affected, because the Company's Offer to
Purchase extends to the approximately 251,442 shares of the Company's Common
Stock currently held by the TIP. Only Peoples Heritage Bank's Trust and
Investment Group (the "Trustee"), as Trustee of the TIP, actually can tender
these shares for sale. However, as a TIP participant, you have the right to
direct the Trustee whether or not to tender your shares of Company Common Stock
allocated to your TIP account as of September 9, 1996. If you elect to have the
Trustee tender these shares, you also are entitled to specify the price or
prices at which they should be tendered.
 
     To ensure the confidentiality of your decision, American Stock Transfer and
Trust Company, the Depositary for the Offer, will tabulate the directions of all
participants in the TIP. Your Direction Forms are to be returned to the
Depositary. You should note that the Trustee will determine whether the
implementation of any participant directions or adherence to any TIP provisions
would be a violation of the Employee Retirement Income Security Act of 1974
("ERISA"). Although it is not anticipated that any direction will violate ERISA,
such that the direction would have to be reversed or ignored, the Department of
Labor requires that the Trustee, as the fiduciary for participants, retain this
discretion. The Trustee has retained an independent legal advisor to advise it
in exercising this discretion.
 
HOW THE OFFER TO PURCHASE WORKS
 
     The details of the Offer to Purchase are described in the enclosed
materials, which you should review carefully. However, in broad outline, the
transaction will work as follows with respect to TIP participants.
 
     -- The Company has offered to purchase up to 2,500,000 of its shares of
        Common Stock at a price between $21.00 and $24.00 per share.
<PAGE>   2
 
     -- If you want any of the shares that are allocated to your TIP account
        sold, you need to direct that they be offered (or "tendered") for sale.
 
     -- You may specify the price at which you want the shares tendered, which
        must be between the two limits above. Alternatively, you may direct that
        your shares be tendered at whatever price is finally determined to be
        the "Purchase Price," as explained below.
 
     -- After the deadline for the tender of shares by all shareholders,
        American Stock Transfer and Trust Company, the Depositary for the Offer,
        will tabulate all directions, and the Company will determine the lowest
        price, between the two limits, at which it can purchase up to 2,500,000
        shares. This is referred to as the Purchase Price.
 
     -- Unless the Offer is voided or discontinued in accordance with its terms,
        the Company then will buy all the shares that were tendered at the
        Purchase Price or below. However, all sellers will receive the same
        Purchase Price, even if they tendered below the Purchase Price.
 
     -- If you have specified a price in excess of the Purchase Price as finally
        determined, those shares will not be purchased, and they will remain
        allocated to your TIP account.
 
     If you do not want to sell, an option is provided for you to direct that
shares allocated to your TIP account be held. Similarly, if you are sure that
you want to sell and are willing to take any price not below the lower limit of
$21.00, then, as mentioned above, there is a separate option provided for you
under which all of your allocated shares will be tendered at the Purchase Price.
 
     The Trustee may override any direction that it determines is in violation
of ERISA, as previously described. In particular, the Company will be prohibited
from purchasing shares from the TIP if the Purchase Price, as finally
determined, is less than the prevailing market price of the shares on the date
the shares are accepted for purchase.
 
     Finally, the Company will prorate the number of shares purchased from
shareholders if there is an excess of shares over the exact number desired at
the Purchase Price as ultimately determined.
 
PROCEDURE FOR DIRECTING TRUSTEE
 
     A Direction Form for giving your instructions to the Trustee is enclosed
for each participant in the TIP who has invested in Common Stock. You must
complete this form and return it in the included envelope in time to be received
no later than 5:00 p.m., New York City Time, on Monday, October 7, 1996 (unless
the Offer to Purchase is extended or amended). If your form is not received by
this deadline, or if it is not fully and properly completed, the shares in your
TIP account will not be tendered. (A separate letter and Direction Form for
shares held in your account in the Company's Profit Sharing Employee Stock
Ownership Plan are being sent to you under separate cover and also will require
your immediate attention.)
 
     To properly complete your Direction Form, you must do the following:
 
        (1) On the face of the form, check Box 1, 2, or 3. CHECK ONLY ONE BOX.
     Make your decision which box to check as follows:
 
        -- CHECK BOX 1 if you do not want the shares allocated to your account
           tendered for sale at any price and simply want the Trustee to
           continue holding shares allocated to your account.
 
        -- CHECK BOX 2 if you definitely want the Trustee to tender for sale all
           of the shares allocated to your account and are willing to accept any
           price (not below $21.00 per share).
 
        -- CHECK BOX 3 in all other cases and complete lines A to D of the table
           immediately below Box 3. (You should not complete the table if you
           checked Box 1 or 2.) Use lines A and B to specify the number of
           shares that you want to tender at each price indicated. Typically,
           you would elect to have all of your shares tendered at a single
           price. However, the form gives you the option of splitting your
           shares among several prices. You must state the number of shares to
           be sold at each indicated price by filling in the number of shares in
           the box immediately below the price.
<PAGE>   3
 
After you have specified your tender price or prices, you should total the
number of shares in each row A and B and insert the total of each line in the
box provided at the end of that line. Specify the number of shares, if any, that
         you do not want tendered, but wish the Trustee to hold, in the single
         box on line C.
 
Finally, total the shares in the end boxes of rows A to C and insert the total
in the box on line D. The total in this box must equal the number of shares
         allocated to your Account as shown on the address label on the
         Direction Form.
 
          (2) Date and sign the Direction Form in the spaces provided.
 
          (3) Return the Direction Form in the included envelope to American
     Stock Transfer and Trust Company no later than 5:00 p.m., New York City
     Time, on Monday, October 7, 1996 (unless this deadline is extended). Be
     sure to return the form even if you decide not to have the Trustee tender
     any shares.
 
Your direction will be deemed irrevocable unless withdrawn by 5:00 p.m., New
York City Time, on Monday, October 7, 1996 (unless the Offer to Purchase is
extended or amended). To be effective, a notice of withdrawal of your direction
must be in writing and must be received by American Stock Transfer and Trust
Company at the following address:
 
             American Stock Transfer and Trust Company, Depositary
                                 40 Wall Street
                                   46th Floor
                            New York, New York 10005
                    (Attention: Corporate Trust Department)
 
Your notice must include your name, address, Social Security number, and the
number of shares allocated to your TIP account that you are withdrawing. Upon
receipt of your notice, your previous direction will be deemed cancelled. You
may direct the retendering of any shares in your accounts by repeating the
previous instructions for directing the tendering set forth in this letter.
 
INVESTMENT OF TENDER PROCEEDS
 
     For any TIP shares that are tendered and purchased by the Company, the
Company will pay cash to the TIP and the Trustee generally will reinvest such
proceeds in accordance with your current election of future contributions made
to Federated Retirement Plan Services ("Federated"). If you wish to change your
election of future contributions or confirm what your election is, you may call
the voice response unit of Federated at 1-800-554-6513 and select Option Three.
You need not do anything if you want the proceeds invested in accordance with
your current election of future contributions. Participants in the TIP who are
executive officers of the Company subject to the reporting and short-swing
trading requirements of Section 16 of the Securities Exchange Act of 1934 will
need to change a current election under the TIP to invest in shares of Common
Stock in order to avoid potential short-swing liability under Section 16.
 
     INDIVIDUAL PARTICIPANTS IN THE TIP WILL NOT RECEIVE ANY PORTION OF THE
TENDER PROCEEDS. ALL SUCH PROCEEDS AND THE ASSETS WILL REMAIN IN THE PLAN AND
MAY BE WITHDRAWN ONLY IN ACCORDANCE WITH THE TERMS OF THE PLAN. NO GAIN OR LOSS
WILL BE RECOGNIZED BY PARTICIPANTS IN THE TIP FOR FEDERAL INCOME TAX PURPOSES IN
CONNECTION WITH THE TENDER OR SALE OF SHARES HELD IN THE PLAN.
 
NO RECOMMENDATION
 
     THE COMPANY'S BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED THE MAKING OF THE
OFFER TO PURCHASE. HOWEVER, NEITHER THE COMPANY, ITS BOARD OF DIRECTORS, PEOPLES
HERITAGE BANK'S TRUST AND INVESTMENT GROUP, AS TRUSTEE, AMERICAN STOCK TRANSFER
AND TRUST COMPANY, AS DEPOSITARY OR ANY OTHER PARTY MAKES ANY RECOMMENDATIONS TO
PARTICIPANTS AS TO WHETHER TO TENDER SHARES, THE PRICE AT WHICH TO TENDER, OR
WHETHER TO REFRAIN FROM TENDERING SHARES. EACH PARTICIPANT MUST MAKE HIS OR HER
OWN DECISION ON THESE MATTERS.
<PAGE>   4
 
CONFIDENTIALITY
 
     AMERICAN STOCK TRANSFER AND TRUST COMPANY HAS BEEN RETAINED TO HELP ENSURE
THE CONFIDENTIALITY OF YOUR DECISION AS A TIP PARTICIPANT. YOUR DECISION WILL
NOT BE DISCLOSED TO ANY DIRECTORS, OFFICERS, OR EMPLOYEES OF PEOPLES HERITAGE
FINANCIAL GROUP, INC. OR PEOPLES HERITAGE BANK, EXCEPT FOR THE PURPOSE OF
ALLOCATING PROCEEDS TO YOUR ACCOUNT IN THE EVENT THAT ALL OR A PORTION OF YOUR
SHARES ARE SOLD.
 
FURTHER INFORMATION
 
     Although Morrow & Co., Inc. (the "Information Agent") has no recommendation
and cannot advise you what to do, its representatives are prepared to answer any
question that you may have on the procedures involved in the Offer and your
direction. The Information Agent also can help you complete your Direction Form.
 
     For this purpose, you may contact the Information Agent at the following
number between 9:00 a.m. and 5:00 p.m., New York City Time, Monday through
Friday:
 
                               Morrow & Co., Inc.
                               909 Third Avenue
                               20th Floor
                               New York, New York 10022
                               (212) 754-8000
 
                               Call Toll Free:
                               1-800-566-9061
 
     Your ability to instruct the Trustee concerning whether or not to tender
shares allocated to your Account is an important part of your rights as a TIP
participant. Please consider this letter and the enclosed materials carefully
and then return your Direction Form for each plan promptly.
 
                                         Sincerely,

                                         /s/ William J. Ryan

                                         William J. Ryan
                                         Chairman, President and
                                         Chief Executive Officer
<PAGE>   5
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
                             THRIFT INCENTIVE PLAN
 
                                 DIRECTION FORM
 
               BEFORE COMPLETING THIS FORM, PLEASE READ CAREFULLY
                       THE ACCOMPANYING OFFER TO PURCHASE
 
           See the Address Label on Reverse Side of This Form for the
        Number of Shares Allocated to Your Thrift Incentive Plan Account
 
     In accordance with the Peoples Heritage Financial Group, Inc. (the
"Company") Offer to Purchase dated September 10, 1996, a copy of which I have
received and read, and pursuant to the pass-through provisions of the Company's
Thrift Incentive Plan (the "Plan"), I hereby direct the Plan's Trustee, Peoples
Heritage Bank's Trust and Investment Group, as follows (check only one box):
 
/ / 1. To refrain from tendering and to hold all shares allocated to my account.
 
/ / 2. To tender all shares allocated to my account at the Purchase Price
       determined by the Company.

<TABLE>
 
/ / 3. To tender shares allocated to my account at the price or prices indicated
       below, except for any shares to be held as indicated on line C below:
- ------------------------------------------------------------------------------------------------------------------------
<S> <C>   <C>         <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        
- ------------------------------------------------------------------------------------------------------------------------
           PRICE      $21.00     $21.25     $21.50     $21.75     $22.00     $22.25     $22.50     $22.75     $23.00
- ------------------------------------------------------------------------------------------------------------------------
    A     NUMBER
            OF
          SHARES
- ------------------------------------------------------------------------------------------------------------------------
           PRICE      $23.25     $23.50     $23.75     $24.00
- ------------------------------------------------------------------------------------------------------------------------
    B     NUMBER
            OF
          SHARES
- ------------------------------------------------------------------------------------------------------------------------
    C     SHARES
           TO BE
           HELD
- ------------------------------------------------------------------------------------------------------------------------
    D      TOTAL
          SHARES
- ------------------------------------------------------------------------------------------------------------------------

</TABLE>

<TABLE>
- ----------------------------------
<S>                         <C> 
                            ROW A
                            TOTAL
- ----------------------------------
 
- ----------------------------------
                            ROW B
                            TOTAL
- ----------------------------------
 
- ----------------------------------
 
- ----------------------------------
 
- ----------------------------------
</TABLE>
 
     Total the number of shares in each of rows A and B and insert that total in
the box at the end of each row. Show shares to be held in the box at the end of
row C. Total the numbers in the end boxes of rows A to C and insert that total
number in the end box of row D. The total in the box of row D must equal the
number of shares allocated to your Account as shown on the address label on the
reverse side of this form.
<PAGE>   6
 
- --------------------------------------------------------------------------------
 
                                  INSTRUCTIONS
 
        Carefully complete the face portion of this Direction Form. Then
   insert today's date and sign your name in the spaces provided below.
   Enclose the form in the included postage prepaid envelope and mail it
   promptly. Your Direction Form must be received no later than 5:00 p.m.,
   New York City Time, on Monday, October 7, 1996. Direction Forms that are
   not fully or properly completed, dated, and signed, or that are received
   after the deadline, will be ignored, and the shares allocated to your
   account will not be tendered. Note that the Trustee also has the right to
   ignore any direction that it determines cannot be implemented without
   violation of applicable law.
 
        Neither the Company, its Board of Directors, Peoples Heritage Bank's
   Trust and Investment Group, as Trustee, nor any other party makes any
   recommendation to participants as to whether to tender shares, the price
   at which to tender, or to refrain from tendering shares. Each participant
   must make his or her own decision on these matters.
 
   Date:             , 1996
                                    --------------------------------------------
                                    Your Signature
                                    (Please sign as your name appears below)
 
        As of September 9, 1996, there were allocated to your account the
   number of shares of Peoples Heritage Financial Group, Inc. common stock
   shown to the right of your address on the label below.
 
   ------------------------------------
 
   ------------------------------------
 
   ------------------------------------
 
   ------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   7
 
                           ['PEOPLES HERITAGE LOGO']
 
                          IMMEDIATE ATTENTION REQUIRED
 
                                                              September 10, 1996
 
                   Re: Direction Concerning Tender of Shares
 
To: Participants in the Profit Sharing Employee
    Stock Ownership Plan of Peoples Heritage
    Financial Group, Inc.
 
     Enclosed are materials that require your immediate attention. They describe
matters directly affecting your interest in the Profit Sharing Employee Stock
Ownership Plan ("ESOP") maintained by Peoples Heritage Financial Group, Inc.
(the "Company"). Read all the materials carefully. You will need to complete the
enclosed Direction Form and return it in the postage paid envelope provided. THE
DEADLINE FOR RECEIPT OF YOUR COMPLETED DIRECTION FORM IS 5:00 P.M., NEW YORK
CITY TIME, ON MONDAY, OCTOBER 7, 1996 (UNLESS EXTENDED). YOU SHOULD COMPLETE THE
FORM AND RETURN IT EVEN IF YOU DECIDE NOT TO PARTICIPATE IN THE TRANSACTION
DESCRIBED IN THE MATERIALS.
 
     The remainder of this letter summarizes the transaction and your rights and
options under the ESOP, but you also should review the more detailed explanation
provided in the other materials.
 
BACKGROUND
 
     The Company has made a tender offer to purchase up to 2,500,000 shares of
its Common Stock (the "Offer"). The objectives of the purchase, and financial
and other information relating to the offer, are described in detail in the
enclosed Offer to Purchase, which is being provided to all shareholders of the
Company.
 
     As a participant who has shares of common stock of the Company allocated to
your account under the ESOP, you are affected, because the Company's Offer to
Purchase extends to the approximately 341,456 shares of the Company's Common
Stock held by the ESOP. Only Peoples Heritage Bank's Trust and Investment Group
(the "Trustee") , as Trustee of the ESOP, actually can tender these shares for
sale. However, as an ESOP participant, you have the right to direct the Trustee
whether or not to tender your shares of Company Common Stock allocated to your
ESOP account as of September 9, 1996. If you elect to have the Trustee tender
these shares, you also are entitled to specify the price or prices at which they
should be tendered.
 
     To ensure the confidentiality of your decision, American Stock Transfer and
Trust Company, the Depositary for the Offer, will tabulate the directions of all
participants in the ESOP. Your Direction Forms are to be returned to the
Depositary. You should note that the Trustee will determine whether the
implementation of any participant directions or adherence to any ESOP provisions
would be a violation of the Employee Retirement Income Security Act of 1974
("ERISA"). Although it is not anticipated that any direction will violate ERISA,
such that the direction would have to be reversed or ignored, the Department of
Labor requires that the Trustee, as the fiduciary for participants, retain this
discretion. The Trustee has retained an independent legal advisor to advise it
in exercising this discretion.
 
HOW THE OFFER TO PURCHASE WORKS
 
     The details of the Offer to Purchase are described in the enclosed
materials, which you should review carefully. However, in broad outline, the
transaction will work as follows with respect to ESOP participants.
 
     -- The Company has offered to purchase up to 2,500,000 of its shares of
        Common Stock at a price between $21.00 and $24.00 per share.
<PAGE>   8
 
     -- If you want any of the shares that are allocated to your ESOP account
        sold, you need to direct that they be offered (or "tendered") for sale.
 
     -- You may specify the price at which you want the shares tendered, which
        must be between the two limits above. Alternatively, you may direct that
        your shares be tendered at whatever price is finally determined to be
        the "Purchase Price," as explained below.
 
     -- After the deadline for the tender of shares by all shareholders,
        American Stock Transfer and Trust Company, the Depositary for the Offer,
        will tabulate all directions, and the Company will determine the lowest
        price, between the two limits, at which it can purchase up to 2,500,000
        shares. This is referred to as the Purchase Price.
 
     -- Unless the Offer is voided or discontinued in accordance with its terms,
        the Company then will buy all the shares that were tendered at the
        Purchase Price or below. However, all sellers will receive the same
        Purchase Price, even if they tendered below the Purchase Price.
 
     -- If you have specified a price in excess of the Purchase Price as finally
        determined, those shares will not be purchased, and they will remain
        allocated to your ESOP account.
 
     If you do not want to sell, an option is provided for you to direct that
shares allocated to your ESOP account be held. Similarly, if you are sure that
you want to sell and are willing to take any price not below the lower limit of
$21.00, then, as mentioned above, there is a separate option provided for you
under which all of your allocated shares will be tendered at the Purchase Price.
 
     The Trustee may override any direction that it determines is in violation
of ERISA, as previously described. In particular, the Company will be prohibited
from purchasing shares from the ESOP if the Purchase Price, as finally
determined, is less than the prevailing market price of the shares on the date
the shares are accepted for purchase.
 
     Finally, the Company will prorate the number of shares purchased from
shareholders if there is an excess of shares over the exact number desired at
the Purchase Price as ultimately determined.
 
PROCEDURE FOR DIRECTING TRUSTEE
 
     A Direction Form for giving your instructions to the Trustee is enclosed
for each participant in the ESOP. You must complete this form and return it in
the included envelope in time to be received no later than 5:00 p.m., New York
City Time, on Monday, October 7, 1996 (unless the Offer to Purchase is extended
or amended). If your form is not received by this deadline, or if it is not
fully and properly completed, the shares in your ESOP account will not be
tendered. (A separate letter and Direction Form for any shares of Company Common
Stock held in your account in the Company's Thrift Incentive Plan are being sent
to you under separate cover and also will require your immediate attention).
 
     To properly complete your Direction Form, you must do the following:
 
          (1) On the face of the form, check Box 1, 2, or 3. CHECK ONLY ONE BOX.
     Make your decision which box to check as follows:
 
        -- CHECK BOX 1 if you do not want the shares allocated to your account
           tendered for sale at any price and simply want the Trustee to
           continue holding shares allocated to your account.
 
        -- CHECK BOX 2 if you definitely want the Trustee to tender for sale all
           of the shares allocated to your account and are willing to accept any
           price (not below $21.00 per share).
 
        -- CHECK BOX 3 in all other cases and complete lines A to D of the table
           immediately below Box 3. (You should not complete the table if you
           checked Box 1 or 2.) Use lines A and B to specify the number of
           shares that you want to tender at each price indicated. Typically,
           you would elect to have all of your shares tendered at a single
           price. However, the form gives you the option of splitting your
           shares among several prices. You must state the number of shares to
           be sold at each indicated price by filling in the number of shares in
           the box immediately below the price.
<PAGE>   9
 
           After you have specified your tender price or prices, you should
           total the number of shares in each row A and B and insert the total
           of each line in the box provided at the end of that line. Specify the
           number of shares, if any, that you do not want tendered, but wish the
           Trustee to hold, in the single box on line C.
 
           Finally, total the shares in the end boxes of rows A to C and insert
           the total in the box on line D. The total in this box must equal the
           number of shares allocated to your Account as shown on the address
           label on the Direction Form.
 
          (2) Date and sign the Direction Form in the spaces provided.
 
          (3) Return the Direction Form in the included envelope to American
     Stock Transfer and Trust Company no later than 5:00 p.m., New York City
     Time, on Monday, October 7, 1996 (unless this deadline is extended). Be
     sure to return the form even if you decide not to have the Trustee tender
     any shares.
 
Your direction will be deemed irrevocable unless withdrawn by 5:00 p.m., New
York City Time, on Monday, October 7, 1996 (unless the Offer to Purchase is
extended or amended). To be effective, a notice of withdrawal of your direction
must be in writing and must be received by American Stock Transfer and Trust
Company at the following address:

             American Stock Transfer and Trust Company, Depositary
                                 40 Wall Street
                                   46th Floor
                            New York, New York 10005
                    (Attention: Corporate Trust Department)
 
Your notice must include your name, address, Social Security number, and the
number of shares allocated to your ESOP account that you are withdrawing. Upon
receipt of your notice, your previous direction will be deemed cancelled. You
may direct the retendering of any shares in your accounts by repeating the
previous instructions for directing the tendering set forth in this letter.
 
INVESTMENT OF TENDER PROCEEDS
 
     For any ESOP shares that are tendered and purchased by the Company, the
Company will pay cash to the ESOP. The Trustee will then decide whether to
reinvest in shares of the Company's common stock or in alternative investments,
being guided by the ESOP's terms and the trust agreement, and subject to the
limitations of ERISA. The ESOP is designed to be invested primarily in Common
Stock of the Company and proceeds eventually will be used to purchase shares of
such stock at a price which may be higher or lower than the Purchase Price, as
finally determined. This could result in a reduction or an increase in the value
of your ESOP account.
 
     INDIVIDUAL PARTICIPANTS IN THE ESOP WILL NOT RECEIVE ANY PORTION OF THE
TENDER PROCEEDS. ALL SUCH PROCEEDS AND THE ASSETS WILL REMAIN IN THE PLAN AND
MAY BE WITHDRAWN ONLY IN ACCORDANCE WITH THE TERMS OF THE PLAN. NO GAIN OR LOSS
WILL BE RECOGNIZED BY PARTICIPANTS IN THE ESOP FOR FEDERAL INCOME TAX PURPOSES
IN CONNECTION WITH THE TENDER OR SALE OF SHARES HELD IN THE PLAN.
 
NO RECOMMENDATION
 
     THE COMPANY'S BOARD OF DIRECTORS HAS UNANIMOUSLY APPROVED THE MAKING OF THE
OFFER TO PURCHASE. HOWEVER, NEITHER THE COMPANY, ITS BOARD OF DIRECTORS, PEOPLES
HERITAGE BANK'S TRUST AND INVESTMENT GROUP, AS TRUSTEE, AMERICAN STOCK TRANSFER
AND TRUST COMPANY, AS DEPOSITARY OR ANY OTHER PARTY MAKES ANY RECOMMENDATIONS TO
PARTICIPANTS AS TO WHETHER TO TENDER SHARES, THE PRICE AT WHICH TO TENDER, OR
WHETHER TO REFRAIN FROM TENDERING SHARES. EACH PARTICIPANT MUST MAKE HIS OR HER
OWN DECISION ON THESE MATTERS.
 
CONFIDENTIALITY
 
     AMERICAN STOCK TRANSFER AND TRUST COMPANY HAS BEEN RETAINED TO HELP ENSURE
THE CONFIDENTIALITY OF YOUR DECISION AS AN ESOP PARTICIPANT. YOUR
<PAGE>   10
 
DECISION WILL NOT BE DISCLOSED TO ANY DIRECTORS, OFFICERS, OR EMPLOYEES OF
PEOPLES HERITAGE FINANCIAL GROUP, INC. OR PEOPLES HERITAGE BANK, EXCEPT FOR THE
PURPOSE OF ALLOCATING PROCEEDS TO YOUR ACCOUNT IN THE EVENT THAT ALL OR A
PORTION OF YOUR SHARES ARE SOLD.
 
FURTHER INFORMATION
 
     Although Morrow & Co., Inc. (the "Information Agent") has no recommendation
and cannot advise you what to do, its representatives are prepared to answer any
question that you may have on the procedures involved in the Offer and your
direction. The Information Agent also can help you complete your Direction Form.
 
     For this purpose, you may contact the Information Agent at the following
number between 9:00 a.m. and 5:00 p.m., New York City Time, Monday through
Friday:
 
                               Morrow & Co., Inc.
                               909 Third Avenue
                               20th Floor
                               New York, New York 10022
                               (212) 754-8000
 
                               Call Toll Free:
                               1-800-566-9061
 
     Your ability to instruct the Trustee concerning whether or not to tender
shares allocated to your Account is an important part of your rights as a TIP
and/or ESOP participant. Please consider this letter and the enclosed materials
carefully and then return your Direction Form for each plan promptly.
 
                                         Sincerely,

                                         /s/ William J. Ryan

                                         William J. Ryan
                                         Chairman, President and
                                         Chief Executive Officer
<PAGE>   11
 
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
                  PROFIT SHARING EMPLOYEE STOCK OWNERSHIP PLAN
 
                                 DIRECTION FORM
 
               BEFORE COMPLETING THIS FORM, PLEASE READ CAREFULLY
                       THE ACCOMPANYING OFFER TO PURCHASE
 
           See the Address Label on Reverse Side of This Form for the
    Number of Shares Allocated to Your Employee Stock Ownership Plan Account
 
     In accordance with the Peoples Heritage Financial Group, Inc. (the
"Company") Offer to Purchase dated September 10, 1996, a copy of which I have
received and read, and pursuant to the pass-through provisions of the Company's
Profit Sharing Employee Stock Ownership Plan (the "Plan"), I hereby direct the
Plan's Trustee, Peoples Heritage Bank's Trust and Investment Group, as follows
(check only one box):
 
/ / 1. To refrain from tendering and to hold all shares allocated to my account.
 
/ / 2. To tender all shares allocated to my account at the Purchase Price
       determined by the Company.
 

<TABLE>
/ / 3. To tender shares allocated to my account at the price or prices indicated
       below, except for any shares to be held as indicated on line C below:

- ------------------------------------------------------------------------------------------------------------------------
<S> <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>        
- ------------------------------------------------------------------------------------------------------------------------
     PRICE     $21.00     $21.25     $21.50     $21.75     $22.00     $22.25     $22.50     $22.75     $23.00
- ------------------------------------------------------------------------------------------------------------------------
 A  NUMBER
      OF
    SHARES
- ------------------------------------------------------------------------------------------------------------------------
     PRICE     $23.25     $23.50     $23.75     $24.00
- ------------------------------------------------------------------------------------------------------------------------
 B  NUMBER
      OF
    SHARES
- ------------------------------------------------------------------------------------------------------------------------
 C  SHARES
     TO BE
     HELD
- ------------------------------------------------------------------------------------------------------------------------
 D   TOTAL
    SHARES
- ------------------------------------------------------------------------------------------------------------------------

</TABLE>

<TABLE>
 
- ----------------------------------
<S>              <C> 
                 ROW A
                 TOTAL
- ----------------------------------
 A
 
- ----------------------------------
                 ROW B
                 TOTAL
- ----------------------------------
 B
 
- ----------------------------------
 C
 
- ----------------------------------
 D
 
- ----------------------------------
</TABLE>
 
     Total the number of shares in each of rows A and B and insert that total in
the box at the end of each row. Show shares to be held in the box at the end of
row C. Total the numbers in the end boxes of rows A to C and insert that total
number in the end box of row D. The total in the box of row D must equal the
number of shares allocated to your account as shown on the address label on the
reverse side of this form.
<PAGE>   12
- --------------------------------------------------------------------------------
                                  INSTRUCTIONS
 
     Carefully complete the face portion of this Direction Form. Then insert
today's date and sign your name in the spaces provided below. Enclose the form
in the included postage prepaid envelope and mail it promptly. Your Direction
Form must be received no later than 5:00 p.m., New York City Time, on Monday,
October 7, 1996. Direction Forms that are not fully or properly completed,
dated, and signed, or that are received after the deadline, will be ignored, and
the shares allocated to your account will not be tendered. Note that the Trustee
also has the right to ignore any direction that it determines cannot be
implemented without violation of applicable law.
 
     Neither the Company, its Board of Directors, Peoples Heritage Bank's Trust
and Investment Group, as Trustee, nor any other party makes any recommendation
to participants as to whether to tender shares, the price at which to tender, or
to refrain from tendering shares. Each participant must make his or her own
decision on these matters.
 
Date:                   , 1996
     -------------------           -------------------------------------------
                                   Your Signature
                                   (Please sign as your name appears below)
 
As of September 9, 1996, there were allocated to your account the number of
shares of Peoples Heritage Financial Group, Inc. common stock shown to the right
of your address on the label below.
 
- ---------------------------------

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

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

<PAGE>   1
                                                                 EXHIBIT 9(a)(9)
 
                           PEOPLES HERITAGE ANNOUNCES
                                  TENDER OFFER
 
     Portland, Maine; September 10, 1996.  Peoples Heritage Financial Group,
Inc. (NASDAQ:PHBK) announced today that it has commenced a tender offer to
purchase up to 2.5 million shares, representing approximately 9.9 percent of the
Company's outstanding Common Stock, from shareholders of the Company. The offer
is being made upon the terms set forth in an Offer to Purchase and in a related
Letter of Transmittal which are being mailed to stockholders.
 
     The offer is in the form of a "Dutch Auction" and allows shareholders to
specify prices at which they are willing to tender their shares to the Company
at a price no greater than $24.00 per share and no less than $21.00 per share.
After completion of the offer period, the Company will set the per-share price
at a level that allows it to purchase up to the maximum number of shares being
sought. The Company-set price will be paid for all purchased shares, even those
tendered at a lower price.
 
     If more than the maximum number of shares sought is tendered at or below
the Company-set price, shares will be prorated. The tender offer is not
conditioned on a minimum number of shares being tendered but is subject to a
number of other conditions.
 
     The tender offer is being conducted by Peoples Heritage in connection with
its proposed acquisition of Family Bancorp (NASDAQ:FMLY), which is anticipated
to be completed by year end following the receipt of all required regulatory
approvals. Based on outstanding shares of Family common stock and options to
purchase such stock, a maximum of 5,572,001 shares of Common Stock will be
issuable by the Company upon completion of the acquisition of Family Bancorp.
The shares of Common Stock to be issued to shareholders of Family pursuant to
the acquisition are not eligible to be tendered in the offer, and neither the
offer nor the Merger is conditioned upon consummation of the other.
 
     The Company and its Board of Directors are not making any recommendation to
shareholders as to whether or not to tender their shares for purchase and have
not authorized any person to make such a recommendation. Keefe, Bruyette &
Woods, Inc. is the dealer-manager for the offer, American Stock Transfer and
Trust Company is the depositary and Morrow & Co., Inc. is the information agent.
 
     Peoples Heritage Financial Group is a $4.4 billion banking and financial
services holding company headquartered in Portland, Maine. The Company's Maine
banking subsidiary, Peoples Heritage Bank, operates 62 banking offices
throughout the state. Its New Hampshire banking subsidiary, Bank of New
Hampshire, operates 45 banking offices throughout the state. Family Bancorp is
the holding company for Family Bank which operates 17 banking offices in
northeastern Massachusetts and six banking offices in southern New Hampshire.

<PAGE>   1
                                                                EXHIBIT 9(a)(10)


           This announcement is neither an offer to purchase nor a
      solicitation of an offer to sell Shares. The Offer is made solely
             by the Offer to Purchase, dated September 10, 1996,
and the related Letter of Transmittal. Capitalized terms not defined in this
notice are defined in the Offer to Purchase. The Offer is not being made to,
     nor will the Company accept tenders from, holders of Shares in any
                   jurisdictions in which the Offer or its
                acceptance would violate that jurisdiction's
laws. The Company is not aware of any jurisdiction in which the making of the
Offer or the tender of Shares would not be in compliance with the laws of such
  jurisdiction. In those jurisdictions whose laws require that the Offer be
  made by a licensed broker or dealer, the Offer shall be deemed to be made
     on the Company's behalf by Keefe, Bruyette & Woods, Inc. or one or
         more registered brokers or dealers licensed under the laws
                           of such jurisdictions.

                                 NOTICE OF OFFER
                                       BY
                     PEOPLES HERITAGE FINANCIAL GROUP, INC.
                                       TO
                                PURCHASE FOR CASH
                                      UP TO
                      2,500,000 SHARES OF ITS COMMON STOCK
           (INCLUDING THE ASSOCIATED PREFERRED STOCK PURCHASE RIGHTS)
                      AT A PURCHASE PRICE NOT GREATER THAN
                      $24.00 NOR LESS THAN $21.00 PER SHARE


     Peoples Heritage Financial Group, Inc., a Maine corporation (the
"Company"), invites shareholders to tender shares of its common stock, par value
$0.01 per share (including the associated Preferred Stock Purchase Rights (the
"Rights"), the "Shares" or the "Common Stock"), to the Company at prices, net to
the seller in cash, not greater than $24.00 nor less than $21.00 per Share,
specified by such shareholders, upon the terms and subject to the conditions set
forth in the Offer to Purchase, dated September 10, 1996 (the "Offer to
Purchase"), and in the related Letter of Transmittal (which together constitute
the "Offer"). Absent circumstances causing the Rights to become exercisable or
separately tradeable prior to the Expiration Date, the tender of Shares also
will constitute a tender of the associated Rights. Unless the context requires
otherwise, all references herein to Shares include the associated Rights. The
information contained in the Offer to Purchase and the Letter of Transmittal is
incorporated by reference herein in its entirety.

     THE OFFER IS NOT CONDITIONED ON ANY MINIMUM NUMBER OF SHARES BEING TENDERED
OR THE MERGER REFERRED TO BELOW, BUT IS SUBJECT TO CERTAIN OTHER CONDITIONS SET
FORTH IN THE OFFER.

<PAGE>   2
     THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M.,
NEW YORK CITY TIME, ON MONDAY, OCTOBER 7, 1996, UNLESS THE OFFER IS EXTENDED.

     The Company will, upon the terms and subject to the conditions of the
Offer, determine a single per Share price (not greater than $24.00 nor less than
$21.00 per Share) (the "Purchase Price") that it will pay for Shares validly
tendered pursuant to the Offer taking in to account the number of Shares so
tendered and the prices specified by tendering shareholders. The Company will
select the Purchase Price which will allow it to buy 2,500,000 Shares (or such
lesser number as are validly tendered at prices not greater than $24.00 nor less
than $21.00 per Share) pursuant to the Offer. All Shares validly tendered at
prices at or below the Purchase Price will be purchased at the Purchase Price,
net to the seller in cash, upon the terms and subject to the conditions of the
Offer, including the proration terms described below. For purposes of the Offer,
the Company will be deemed to have accepted for payment (and thereby purchased),
subject to proration, Shares which are validly tendered at or below the Purchase
Price when, as and if it gives oral or written notice to the Depositary of its
acceptance of such Shares for payment pursuant to the Offer. In all cases,
payment for Shares tendered and accepted for payment pursuant to the Offer will
be made only after timely receipt by the Depositary of certificates for such
Shares (or a timely confirmation of a book-entry transfer of such Shares into
the Depositary's account at one of the Book-Entry Transfer Facilities (as
defined in the Offer to Purchase)), a properly completed and duly executed
Letter of Transmittal (or facsimile thereof) and any other documents required by
the Letter of Transmittal.

     Upon the terms and subject to the conditions of the Offer, in the event
that prior to the Expiration Date more than 2,500,000 Shares (or such greater
number of Shares as the Company may elect to purchase pursuant to the Offer) are
validly tendered at or below the Purchase Price, the Company will accept Shares
for purchase in the following order of priority: (a) first, all Shares validly
tendered by any Odd Lot Owner (as defined in the Offer) who tenders all such
Shares beneficially owned by such Odd Lot Owner at or below the Purchase Price
(partial tenders will not qualify for this preference) and who completes the box
captioned "Odd Lots" on the Letter of Transmittal and, if applicable, on the
Notice of Guaranteed Delivery, and (b) then, after purchase of all of the
foregoing Shares, all other Shares validly tendered at or below the Purchase
Price before the Expiration Date on a pro rata basis, if necessary (with
adjustments to avoid purchases of fractional Shares).

     The Offer may provide shareholders who are considering a sale of all or a
portion of their Shares the opportunity to determine the price or prices (not
greater than $24.00 nor less than $21.00 per Share) at which they are willing to
sell their Shares and, if any such Shares are purchased pursuant to the Offer,
to sell those Shares for cash without the usual transaction costs associated
with open-market sales.

     The Offer is being conducted by the Company in connection with its proposed
acquisition of Family Bancorp ("Family"), a Massachusetts corporation, pursuant
to an

                                        2

<PAGE>   3

Agreement and Plan of Merger, dated as of May 30, 1996, by and among the
Company, Peoples Heritage Merger Corp. ("Merger Corp."), a newly-formed,
wholly-owned subsidiary of the Company, and Family (the "Agreement"). The
Agreement provides, among other things, for (i) the merger of Family with and
into Merger Corp. (the "Merger") and (ii) the conversion of each share of common
stock, par value $0.10 per share, of Family (the "Family Common Stock")
outstanding immediately prior to the Merger (other than any dissenting shares
under Massachusetts law and certain shares held by the Company) into the right
to receive 1.26 shares of Common Stock (the "Exchange Ratio"), subject to
possible adjustment under certain circumstances, plus cash in lieu of any
fractional share interest. Based on 4,259,336 shares of Family Common Stock
outstanding as of August 31, 1996 and outstanding options to purchase 162,887 of
such shares as of the same date, a maximum of 5,572,001 shares of Common Stock
will be issuable upon consummation of the Merger. The shares of Common Stock to
be issued to shareholders of Family pursuant to the Agreement are not eligible
to be tendered in the Offer. The Offer is being conducted in advance of
consummation of the Merger, and neither the Offer nor the Merger is conditioned
upon consummation of the other.

     THE BOARD OF DIRECTORS OF THE COMPANY HAS UNANIMOUSLY APPROVED THE OFFER.
HOWEVER, NEITHER THE COMPANY NOR ITS BOARD OF DIRECTORS MAKES ANY RECOMMENDATION
TO ANY SHAREHOLDER AS TO WHETHER TO TENDER OR REFRAIN FROM TENDERING SHARES.
SHAREHOLDERS MUST MAKE THEIR OWN DECISIONS WHETHER TO TENDER SHARES AND, IF SO,
HOW MANY SHARES TO TENDER AND THE PRICE OR PRICES AT WHICH SHARES SHOULD BE
TENDERED. 

     The Company reserves the right, at any time or from time to time, in its
sole discretion, to extend the period of time during which the Offer is open by
giving oral or written notice of such extension to the Depositary and making a
public announcement thereof. Subject to certain conditions, the Company also
expressly reserves the right to terminate the Offer and not accept for payment
any Shares not theretofore accepted for payment.

     Shares tendered pursuant to the Offer may be withdrawn at any time prior to
the Expiration Date and, unless theretofore accepted for payment by the Company,
also may be withdrawn after 12:00 midnight, New York City time, on Tuesday,
November 5, 1996. For a withdrawal to be effective, the Depositary must timely
receive a written, telegraphic or facsimile transmission notice of withdrawal.
Such notice of withdrawal must specify the name of the person who tendered the
Shares to be withdrawn, the number of Shares to be withdrawn and the name of the
registered holder (if different from that of the person who tendered such
Shares). If the certificates have been delivered or otherwise identified to the
Depositary, then, prior to the release of such certificates, the tendering
shareholder must

                                        3

<PAGE>   4


also submit the serial numbers of the particular certificates evidencing the
Shares to be withdrawn and the signature on the notice of withdrawal must be
Medallion guaranteed by an Eligible Institution (except in the case of Shares
tendered by an Eligible Institution). If Shares have been tendered pursuant to
the procedure for book-entry transfer set forth in the Offer to Purchase, the
notice of withdrawal must specify the name and number of the account at the
applicable Book-Entry Transfer Facility to be credited with the withdrawn Shares
and otherwise comply with the procedures of such facility.

     THE OFFER TO PURCHASE AND THE LETTER OF TRANSMITTAL CONTAIN IMPORTANT
INFORMATION, WHICH SHOULD BE READ BEFORE SHAREHOLDERS DECIDE WHETHER TO ACCEPT
OR REJECT THE OFFER AND IF ACCEPTED, AT WHAT PRICES TO TENDER THEIR SHARES.
These materials are being mailed to record holders of Shares and are being
furnished to brokers, banks and similar persons whose names, or the names of
whose nominees, appear on the Company's shareholder list (or, if applicable, who
are listed as participants in a clearing agency's security position listing) for
transmittal to beneficial holders of Shares.

     THE INFORMATION REQUIRED TO BE DISCLOSED BY RULE 13E-4(D)(1) OF THE
SECURITIES EXCHANGE ACT OF 1934, AS AMENDED, IS CONTAINED IN THE OFFER TO
PURCHASE AND IS INCORPORATED IN THIS NOTICE BY REFERENCE.

     Please contact the Information Agent for copies of the Offer to Purchase,
the related Letter of Transmittal and other tender offer materials. It will
furnish copies promptly at the Company's expense.

                      The Information Agent for the Offer is:

                               MORROW & CO., INC.
                                909 Third Avenue
                                   20th Floor
                            New York, New York 10022
                                 (212) 754-8000

                                 Call Toll Free:
                                 1-800-566-9061
              Banks and brokerage firms please call 1-800-662-5200


                      The Dealer Manager for the Offer Is:

                          KEEFE, BRUYETTE & WOODS, INC.
                             Two World Trade Center
                            New York, New York 10048
                                 (212) 323-8450

September 11, 1996

                                        4





© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission