Exhibit 3


                                                                  EXECUTION COPY


                             STOCK OPTION AGREEMENT

         STOCK OPTION AGREEMENT, dated as of July 20, 2000, between HOME PORT
BANCORP, INC., a Delaware corporation ("Issuer"), and SEACOAST FINANCIAL
SERVICES CORPORATION, a Massachusetts corporation ("Grantee").

                                   WITNESSETH:

         WHEREAS, Grantee and Issuer have entered into an Agreement and Plan of
Merger of even date herewith (the "Merger Agreement"), which agreement has been
executed by the parties hereto immediately prior to this Agreement; and

         WHEREAS, as a condition to Grantee's entering into the Merger Agreement
and in consideration therefor, Issuer has agreed to grant Grantee the Option (as
defined in Section 2(a)):

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

     1.  CERTAIN DEFINITIONS.

              (a) "1934 Act" shall mean the Securities Exchange Act of 1934, as
amended, and the rules and regulations thereunder.

              (b) "Acquisition Transaction" shall mean (w) a merger or
consolidation, or any similar transaction, involving Issuer or any Significant
Subsidiary (as defined in Rule 1-02 of Regulation S-X promulgated by the
Securities and Exchange Commission (the "SEC")) of Issuer, (x) a purchase, lease
or other acquisition of all or a substantial portion of the assets of Issuer or
any Significant Subsidiary of Issuer, (y) a purchase or other acquisition
(including by way of merger, consolidation, share exchange or otherwise) of
securities representing 10% or more of the voting power of Issuer or any
Significant Subsidiary of Issuer, or (z) any substantially similar transaction;
PROVIDED, HOWEVER, that in no event shall any (i) merger, consolidation, or
similar transaction involving Issuer or any Significant Subsidiary in which the
voting securities of Issuer outstanding immediately prior thereto continue to
represent (by either remaining outstanding or being converted into the voting
securities of the surviving entity of any such transaction) at least 65% of the
combined voting power of the voting securities of the Issuer or the surviving
entity outstanding immediately after the consummation of such merger,
consolidation, or similar transaction, or (ii) any merger, consolidation,
purchase or similar transaction involving only the Issuer and one or more of its
Subsidiaries or involving only any two or more of such Subsidiaries, be deemed
to be an Acquisition Transaction, provided any such transaction is not entered
into in violation of the terms of the Merger Agreement.

              (c) The term "beneficial ownership" shall have the meaning
assigned thereto in Section 13(d) of the 1934 Act.

              (d) "Exercise Termination Event" shall mean each of the following:


                                       1


                  (i) the Effective Time (as defined in the Merger Agreement) of
         the Merger;

                  (ii) termination of the Merger Agreement in accordance with
         the provisions thereof if such termination occurs prior to the
         occurrence of an Initial Triggering Event except a termination by
         Grantee pursuant to Sections 9.01(d) or 9.01(e) of the Merger Agreement
         (unless the breach by Issuer giving rise to such right of termination
         is non- volitional); or

                  (iii) the passage of twelve months after termination of the
         Merger Agreement if such termination follows the occurrence of an
         Initial Triggering Event or is a termination by Grantee pursuant to
         Sections 9.01(d) or 9.01(e) of the Merger Agreement (unless the breach
         by Issuer giving rise to such right of termination is non-volitional).

              (e) "Holder" shall mean the holder or holders of the Option.

              (f) "Initial Triggering Event" shall mean any of the following
events or transactions occurring after the date hereof:

                  (i) Issuer or any of its Subsidiaries (each an "Issuer
         Subsidiary"), without having received Grantee's prior written consent,
         shall have entered into an agreement to engage in an Acquisition
         Transaction (as defined in Section 1(b)) with any person other than
         Grantee or any of its Subsidiaries (each a "Grantee Subsidiary") or the
         Board of Directors of Issuer shall have recommended that the
         stockholders of Issuer approve or accept any Acquisition Transaction or
         shall have failed to publicly oppose an Acquisition Transaction, in
         each case with any person other than Grantee or a Grantee Subsidiary;

                  (ii) Issuer or any Issuer Subsidiary, without having received
         Grantee's prior written consent, shall have authorized, recommended,
         proposed or publicly announced its intention to authorize, recommend or
         propose, to engage in an Acquisition Transaction with any person other
         than Grantee or a Grantee Subsidiary, or the Board of Directors of
         Issuer shall have publicly withdrawn or modified, or publicly announced
         its intention to withdraw or modify, in any manner adverse to Grantee,
         its recommendation that the stockholders of Issuer approve the
         transactions contemplated by the Merger Agreement;

                  (iii) The shareholders of Issuer shall have voted and failed
         to approve and adopt the Merger Agreement and the Merger at a meeting
         which has been held for that purpose or any adjournment or postponement
         thereof, or such meeting shall not have been held in violation of the
         Merger Agreement or shall have been canceled prior to termination of
         the Merger Agreement if, prior to such meeting (or if such meeting
         shall not have been held or shall have been canceled, prior to such
         termination), any person (other than the Grantee or a Grantee
         Subsidiary) shall have made a proposal to Issuer or its stockholders by
         public announcement or written communication that is or becomes the
         subject of public disclosure to engage in an Acquisition Transaction;

                  (iv) Any person other than Grantee, any Grantee Subsidiary or
         any Issuer Subsidiary acting in a fiduciary capacity in the ordinary
         course of its business shall have acquired beneficial ownership or the
         right to acquire beneficial ownership of 15% or more of the outstanding
         shares of Common Stock;


                                       2


                  (v) Any person other than Grantee or any Grantee Subsidiary
         shall have made a bona fide proposal to Issuer or its stockholders by
         public announcement or written communication that is or becomes the
         subject of public disclosure to engage in an Acquisition Transaction;

                  (vi) After an overture is made by a person other than Grantee
         or any Grantee Subsidiary to Issuer or its stockholders to engage in an
         Acquisition Transaction, Issuer shall have breached any covenant or
         obligation contained in the Merger Agreement and such breach (x) would
         entitle Grantee to terminate the Merger Agreement and (y) shall not
         have been cured prior to the Notice Date (as defined in Section 3(c));
         or

                  (vii) Any person other than Grantee or any Grantee Subsidiary,
         other than in connection with a transaction to which Grantee has given
         its prior written consent, shall have filed an application or notice
         with the Federal Reserve Board, or other federal or state bank
         regulatory authority, whether in draft or final form, for approval to
         engage in an Acquisition Transaction.

              (g) "Last Triggering Event" shall mean the last Initial Triggering
Event to expire.

              (h) The term "market/offer price" shall mean the highest of (i)
the price per share of Common Stock at which a tender offer or exchange offer
therefor has been made, (ii) the price per share of Common Stock to be paid by
any third party pursuant to an agreement with Issuer, or (iii) in the event of a
sale of all or a substantial portion of Issuer's assets, the sum of the price
paid in such sale for such assets and the current market value of the remaining
assets of Issuer as determined by a nationally recognized investment banking
firm selected by the Holder, divided by the number of shares of Common Stock of
Issuer outstanding at the time of such sale. In determining the market/offer
price, the value of consideration other than cash shall be determined by a
nationally recognized investment banking firm selected by the Holder and
reasonably acceptable to the Issuer.

              (i) The term "person" shall have the meaning assigned thereto in
Sections 3(a)(9) and 13(d)(3) of the 1934 Act.

              (j) "Subsequent Triggering Event" shall mean either of the
following events or transactions occurring after the date hereof:

                  (i) The acquisition by any person of beneficial ownership of
         20% or more of the then outstanding Common Stock; or

                  (ii) The occurrence of the Initial Triggering Event described
         in Section 1(f)(i), except that the percentage referred to in the
         definition of Acquisition Transaction in clause (y) of Section 1(b)
         shall be 20%.

     2.  GRANT OF OPTION.

              (a) Option. Issuer hereby grants to Grantee an unconditional,
irrevocable option (the "Option") to purchase, subject to the terms hereof, up
to 366,536 fully paid and nonassessable shares of Issuer's common stock, par
value $.01 per share ("Common Stock"), at a price of



                                       3


$37.00 per share (the "Option Price"); PROVIDED FURTHER that in no event shall
the number of shares of Common Stock for which this Option is exercisable exceed
19.9% of the Issuer's issued and outstanding shares of Common Stock without
giving effect to any shares subject to or issued pursuant to the Option. The
number of shares of Common Stock that may be received upon the exercise of the
Option and the Option Price are subject to adjustment as herein set forth.

              (b) ISSUANCE OF ADDITIONAL SHARES OF COMMON STOCK. In the event
that any additional shares of Common Stock are issued or otherwise become
outstanding after the date of this Agreement (other than pursuant to this
Agreement), the number of shares of Common Stock subject to the Option shall be
increased so that, after such issuance, it equals 19.9% of the number of shares
of Common Stock then issued and outstanding without giving effect to any shares
subject or issued pursuant to the Option. Nothing contained in this Section 2(b)
or elsewhere in this Agreement shall be deemed to authorize Issuer or Grantee to
breach any provision of the Merger Agreement.

     3.  EXERCISE OF OPTION.

              (a) PRECONDITIONS TO EXERCISE. The Holder (as defined in Section
1(e)) may exercise the Option, in whole or part, and from time to time (but not
more than an aggregate of three times), if, but only if, both an Initial
Triggering Event (as defined in Section 1(f)) and a Subsequent Triggering Event
(as defined in Section 1(j)) shall have occurred prior to the occurrence of an
Exercise Termination Event (as defined in Section 1(d)); PROVIDED that the
Holder shall have sent the written notice of such exercise (as provided in
Section 3(c)) within 50 days following such Subsequent Triggering Event.

              (b) NOTIFICATION BY ISSUER AS TO CERTAIN EVENTS. Issuer shall
notify Grantee promptly in writing of the occurrence of any Initial Triggering
Event or Subsequent Triggering Event (together, a "Triggering Event"), it being
understood that the giving of such notice by Issuer shall not be a condition to
the right of the Holder to exercise the Option.

              (c) NOTICE OF EXERCISE OF OPTION. In the event the Holder is
entitled to and wishes to exercise the Option, it shall send to Issuer a written
notice (the date of which being herein referred to as the "Notice Date")
specifying (i) the total number of shares it will purchase pursuant to such
exercise and (ii) a place and date not earlier than three business days nor
later than 20 business days from the Notice Date for the closing of such
purchase (the "Closing Date"); provided that if prior notification to or
approval of the Federal Reserve Board or any other regulatory agency is required
in connection with such purchase, the Holder shall promptly file the required
notice or application for approval and shall expeditiously process the same and
the period of time that otherwise would run pursuant to this sentence shall run
instead from the date on which any required notification periods (including any
extensions thereof) have expired or been terminated or such approvals have been
obtained and any requisite waiting period or periods (including any extensions
thereof) shall have passed. Any exercise of the Option shall be deemed to occur
on the Notice Date relating thereto.

              (d) PAYMENT OF EXERCISE PRICE. At the closing referred to in
Section 3(c), the Holder shall pay to Issuer the aggregate purchase price for
the shares of Common Stock purchased pursuant to the exercise of the Option in
immediately available funds by wire transfer to a bank



                                       4


account designated by Issuer, provided that failure or refusal of Issuer to
designate such a bank account shall not preclude the Holder from exercising the
Option.

              (e) DELIVERY OF CERTIFICATES. At such closing, simultaneously with
the delivery of immediately available funds as provided in Section 3(d), Issuer
shall deliver to the Holder a certificate or certificates representing the
number of shares of Common Stock purchased by the Holder and, if the Option
should be exercised in part only, a new Option evidencing the rights of the
Holder thereof to purchase the balance of the shares purchasable hereunder, and
the Holder shall deliver to Issuer a copy of this Agreement and a letter
agreeing that the Holder will not offer to sell or otherwise dispose of such
shares in violation of applicable law or the provisions of this Agreement.

              (f) RESTRICTIVE LEGEND. Certificates for Common Stock delivered at
a closing hereunder may be endorsed with a restrictive legend that shall read
substantially as follows:

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

It is understood and agreed that: (i) the reference to the resale restrictions
of the Securities Act of 1933, as amended (the "1933 Act"), in the above legend
shall be removed by delivery of substitute certificate(s) without such reference
if the Holder shall have delivered to Issuer a copy of a letter from the staff
of the SEC, or an opinion of counsel, in form and substance reasonably
satisfactory to Issuer, to the effect that such legend is not required for
purposes of the 1933 Act; (ii) the reference to the provisions to this Agreement
in the above legend shall be removed by delivery of substitute certificate(s)
without such reference if the shares have been sold or transferred in compliance
with the provisions of this Agreement and under circumstances that do not
require the retention of such reference; and (iii) the legend shall be removed
in its entirety if the conditions in the preceding clauses (i) and (ii) are both
satisfied. In addition, such certificates shall bear any other legend as may be
required by law.

              (g) HOLDER OF RECORD. Upon the giving by the Holder to Issuer of
the written notice of exercise of the Option provided for under Section 3(c) and
the tender of the applicable purchase price in immediately available funds, the
Holder shall be deemed to be the holder of record of the shares of Common Stock
issuable upon such exercise, notwithstanding that the stock transfer books of
Issuer shall then be closed or that certificates representing such shares of
Common Stock shall not then be actually delivered to the Holder. Issuer shall
pay all expenses, and any and all United States federal, state and local taxes
and other charges imposed upon Issuer that may be payable in connection with the
preparation, issue and delivery of stock certificates under this Section 3 in
the name of the Holder or its permitted assignee.

     4.  CERTAIN AGREEMENTS OF THE ISSUER. Issuer agrees: (i) that it shall at
all times maintain, free from preemptive rights, sufficient authorized but
unissued or treasury shares of Common Stock so that the Option may be exercised
without additional authorization of Common Stock after giving effect to all
other options, warrants, convertible securities and other rights to



                                       5


purchase Common Stock; (ii) that it will not, by charter amendment or through
reorganization, consolidation, merger, dissolution or sale of assets, or by any
other voluntary act, avoid or seek to avoid the observance or performance of any
of the covenants, stipulations or conditions to be observed or performed
hereunder by Issuer; (iii) promptly to take all action as may from time to time
be required (including (x) complying with all premerger notification, reporting
and waiting period requirements specified in 15 U.S.C. sec. 18a and regulations
promulgated thereunder and (y) in the event, under the Bank Holding Company Act
of 1956, as amended (the "BHCA"), or the Change in Bank Control Act of 1978, as
amended, or any state banking law, prior approval of or notice to the Federal
Reserve Board or to any other federal or state regulatory authority is necessary
before the Option may be exercised, cooperating fully with the Holder in
preparing such applications or notices and providing such information to the
Federal Reserve Board or such other federal or state regulatory authority as
they may require) in order to permit the Holder to exercise the Option and
Issuer duly and effectively to issue shares of Common Stock pursuant hereto; and
(iv) promptly to take all action provided herein to protect the rights of the
Holder against dilution.

     5.  SURRENDER AND EXCHANGE. Subject to the provisions of Section 12, this
Agreement (and the Option granted hereby) are exchangeable, without expense, at
the option of the Holder, upon presentation and surrender of this Agreement at
the principal office of Issuer, for other Agreements providing for Options of
different denominations entitling the holder thereof to purchase, on the same
terms and subject to the same conditions as are set forth herein, in the
aggregate the same number of shares of Common Stock purchasable hereunder. The
terms "Agreement" and "Option" as used herein include any Stock Option
Agreements and related Options for which this Agreement (and the Option granted
hereby) may be exchanged. Upon receipt by Issuer of evidence reasonably
satisfactory to it of the loss, theft, destruction or mutilation of this
Agreement, and (in the case of loss, theft or destruction) of reasonably
satisfactory indemnification, and upon surrender and cancellation of this
Agreement, if mutilated, Issuer will execute and deliver a new Agreement of like
tenor and date. Any such new Agreement executed and delivered shall constitute
an additional contractual obligation on the part of Issuer, whether or not the
Agreement so lost, stolen, destroyed or mutilated shall at any time be
enforceable by anyone.

     6.  FURTHER ADJUSTMENT IN NUMBER OF SHARES PURCHASABLE. In addition to the
adjustment in the number of shares of Common Stock that are purchasable upon
exercise of the Option pursuant to Section 2(b) of this Agreement, the number of
shares of Common Stock purchasable upon the exercise of the Option and the
Option Price shall be subject to adjustment from time to time as provided in
this Section 6. In the event of any change in, or distributions in respect of,
the Common Stock by reason of stock dividends, split-ups, mergers,
recapitalization, combinations, subdivisions, conversions, exchanges of shares,
distributions on or in respect of the Common Stock (whether or not the same
would be prohibited under the terms of the Merger Agreement), or the like, the
type and number of shares of Common Stock purchasable upon exercise hereof and
the Option Price shall be appropriately adjusted in such manner as shall fully
preserve the economic benefits provided hereunder and proper provision shall be
made in any agreement governing any such transaction to provide for such proper
adjustment and the full satisfaction of the Issuer's obligations hereunder.



                                       6


     7.  REGISTRATION. The obligations set forth in this Section 7 shall apply
during such time as securities of the Issuer (or its successors or assigns) are
registered under the 1934 Act. Upon the occurrence of a Subsequent Triggering
Event that occurs prior to an Exercise Termination Event, Issuer shall, at the
request of Grantee delivered within 50 day after such Subsequent Triggering
Event (whether on its own behalf or on behalf of any subsequent holder of this
Option (or part thereof) or any of the shares of Common Stock issued pursuant
hereto), promptly prepare, file and keep current a shelf registration statement
under the 1933 Act covering the resale of this Option and any shares issued
pursuant to this Option and the issuance of any shares issuable pursuant to this
Option to the extent then permitted under the rules, regulations or policies of
the SEC and, to the extent not so permitted, the resale of such shares issuable
pursuant to this Option. The Issuer shall use its reasonable best efforts to
cause such registration statement to become effective and remain current in
order to permit the sale or other disposition of this Option and any shares of
Common Stock issued upon total or partial exercise of this Option ("Option
Shares") in accordance with any plan of disposition requested by Grantee. Issuer
will use its reasonable best efforts to cause such registration statement first
to become effective and then to remain effective for such period not in excess
of 180 days from the day such registration statement first becomes effective or
such longer time as may be reasonably necessary to effect such sales or other
dispositions. Grantee shall have the right to demand two such registrations. The
foregoing notwithstanding, if, at the time of any request by Grantee for
registration of the Option or Option Shares as provided above, Issuer is in
registration with respect to an underwritten public offering of shares of Common
Stock, and if in the good faith judgment of the managing underwriter or managing
underwriters, or, if none, the sole underwriter or underwriters, of such
offering, the inclusion of the Holder's Option or Option Shares would interfere
with the successful marketing of the shares of Common Stock offered by Issuer,
the number of Option Shares otherwise to be covered in the registration
statement contemplated hereby may be reduced; and PROVIDED, HOWEVER, that after
any such required reduction the number of Option Shares to be included in such
offering for the account of the Holder shall constitute at least 25% of the
total number of shares to be sold by the Holder and Issuer in the aggregate; and
PROVIDED FURTHER, HOWEVER, that if such reduction occurs, then the Issuer shall
file a registration statement for the balance as promptly as practical and no
reduction shall thereafter occur. Each such Holder shall provide all information
reasonably requested by Issuer for inclusion in any registration statement to be
filed hereunder. If requested by any such Holder in connection with such
registration, Issuer shall become a party to any underwriting agreement relating
to the sale of such shares, but only to the extent of obligating itself in
respect of representations, warranties, indemnities and other agreements
customarily included in such underwriting agreements for the Issuer. Upon
receiving any request under this Section 7 from any Holder, Issuer agrees to
send a copy thereof to any other person known to Issuer to be entitled to
registration rights under this Section 7, in each case by promptly mailing the
same, postage prepaid, to the address of record of the persons entitled to
receive such copies. Notwithstanding anything to the contrary contained herein,
in no event shall Issuer be obligated to effect more than two registrations
pursuant to this Section 7 by reason of the fact that there shall be more than
one Grantee as a result of any assignment or division of this Agreement.

     8.  SUBSTITUTE OPTION.

              (a) In the event that prior to an Exercise Termination Event,
Issuer shall enter into an agreement (i) to consolidate with or merge into any
person, other than Grantee or one of its



                                       7


Subsidiaries, and shall not be the continuing or surviving corporation of such
consolidation or merger, (ii) to permit any person, other than Grantee or one of
its Subsidiaries, to merge into Issuer and Issuer shall be the continuing or
surviving corporation, but, in connection with such merger, the then outstanding
shares of Common Stock shall be changed into or exchanged for stock or other
securities of any other person or cash or any other property or the then
outstanding shares of Common Stock shall after such merger represent less than
50% of the outstanding voting shares and voting share equivalents of the merged
company, or (iii) to sell or otherwise transfer all or substantially all of its
assets to any person, other than Grantee or one of its Subsidiaries, then, and
in each such case, the agreement governing such transaction shall make proper
provision so that the Option shall, upon the consummation of any such
transaction and upon the terms and conditions set forth herein, be converted
into, or exchanged for, an option (the "Substitute Option"), at the election of
the Holder, of either (x) the Acquiring Corporation (as hereinafter defined) or
(y) any person that controls the Acquiring Corporation.

              (b) The following terms have the meanings indicated:

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

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

                  (3) "Assigned Value" shall mean the market/offer price, as
         defined in Section 1(h).

                  (4) "Average Price" shall mean the average closing price of a
         share of the Substitute Common Stock for the one year immediately
         preceding the consolidation, merger or sale in question, but in no
         event higher than the closing price of the shares of Substitute Common
         Stock on the day preceding such consolidation, merger or sale; provided
         that if Issuer is the issuer of the Substitute Option, the Average
         Price shall be computed with respect to a share of common stock issued
         by the person merging into Issuer or by any company which controls or
         is controlled by such person, as the Holder may elect.

              (c) The Substitute Option shall have the same terms as the Option,
provided, that if the terms of the Substitute Option cannot, for legal reasons,
be the same as the Option, such terms shall be as similar as possible and in no
event less advantageous to the Holder. The issuer of the Substitute Option shall
also enter into an agreement with the then Holder or Holders of the Substitute
Option in substantially the same form as this Agreement, which shall be
applicable to the Substitute Option.

              (d) The Substitute Option shall be exercisable for such number of
shares of Substitute Common Stock as is equal to the Assigned Value multiplied
by the number of shares of Common Stock for which the Option is then
exercisable, divided by the Average Price. The exercise price of the Substitute
Option per share of Substitute Common Stock shall then be equal to the Option


                                       8


Price multiplied by a fraction, the numerator of which shall be the number of
shares of Common Stock for which the Option is then exercisable and the
denominator of which shall be the number of shares of Substitute Common Stock
for which the Substitute Option is exercisable.

              (e) In no event, pursuant to any of the foregoing provisions of
this Section 8, shall the Substitute Option be exercisable for more than 19.9%
of the shares of Substitute Common Stock outstanding prior to exercise of the
Substitute Option. In the event that the Substitute Option would be exercisable
for more than 19.9% of the shares of Substitute Common Stock outstanding prior
to exercise but for this clause (e), the issuer of the Substitute Option (the
"Substitute Option Issuer") shall make a cash payment to Holder equal to the
excess of (i) the value of the Substitute Option without giving effect to the
limitation in this clause (e) over (ii) the value of the Substitute Option after
giving effect to the limitation in this clause (e). This difference in value
shall be determined by a nationally recognized investment banking firm selected
by the Holder, and reasonably acceptable to the Acquiring Corporation.

              (f) Issuer shall not enter into any transaction described in
Section 8(a) unless the Acquiring Corporation and any person that controls the
Acquiring Corporation assume in writing all the obligations of Issuer hereunder.

     9.  EXTENSION OF TIME. The 50-day period for exercise of certain rights
under Sections 3, 7 and 12 shall be extended: (i) to the extent necessary to
obtain all regulatory approvals for the exercise of such rights, and for the
expiration of all statutory waiting periods; and (ii) to the extent necessary to
avoid liability under Section 16(b) of the 1934 Act by reason of such exercise.

     10. REPRESENTATIONS AND WARRANTIES OF ISSUER. Issuer hereby represents and
warrants to Grantee as follows:

              (a) Issuer has full corporate power and authority to execute and
deliver this Agreement and to consummate the transactions contemplated hereby.
The execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby have been duly and validly authorized by the
Board of Directors of Issuer and no other corporate proceedings on the part of
Issuer are necessary to authorize this Agreement or to consummate the
transactions so contemplated. This Agreement has been duly and validly executed
and delivered by Issuer.

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

     11. REPRESENTATIONS AND WARRANTIES OF GRANTEE. Grantee hereby represents
and warrants to Issuer that:



                                       9


              (a) Grantee has all requisite corporate power and authority to
enter into this Agreement and, subject to any approvals or consents referred to
herein, to consummate the transactions contemplated hereby. The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly authorized by all necessary corporate action on the part
of Grantee. This Agreement has been duly executed and delivered by Grantee.

              (b) The Option is not being, and any shares of Common Stock or
other securities acquired by Grantee upon exercise of the Option will not be,
acquired with a view to the public distribution thereof and will not be
transferred or otherwise disposed of except in a transaction registered or
exempt from registration under the Securities Act.

     12. NO ASSIGNMENT. Neither of the parties hereto may assign any of its
rights or obligations under this Option Agreement or the Option created
hereunder to any other person, without the express written consent of the other
party, except Grantee may assign the Option to an affiliate or in connection
with a merger in which it is not the surviving entity or in connection with a
sale of all or substantially all of its assets.

     13. REASONABLE BEST EFFORTS. Each of Grantee and Issuer will use its best
efforts to make all filings with, and to obtain consents of, all third parties
and governmental authorities necessary to the consummation of the transactions
contemplated by this Agreement, including without limitation making application
to list the shares of Common Stock issuable hereunder on the NASDAQ National
Stock Market upon official notice of issuance and applying to the Federal
Reserve Board under the BHCA for approval to acquire the shares issuable
hereunder.

     14. SPECIFIC PERFORMANCE. The parties hereto acknowledge that damages would
be an inadequate remedy for a breach of this Agreement by either party hereto
and that the obligations of the parties hereto shall be enforceable by either
party hereto through injunctive or other equitable relief.

     15. SEVERABILITY. If any term, provision, covenant or restriction contained
in this Agreement is held by a court or a federal or state regulatory agency of
competent jurisdiction to be invalid, void or unenforceable, the remainder of
the terms, provisions and covenants and restrictions contained in this Agreement
shall remain in full force and effect, and shall in no way be affected, impaired
or invalidated. If for any reason such court or regulatory agency determines
that the Holder is not permitted to acquire the full number of shares of Common
Stock provided in Section 2(a) hereof (as adjusted pursuant to Section 2(b) or 6
hereof), it is the express intention of Issuer to allow the Holder to acquire
such lesser number of shares as may be permissible, without any amendment or
modification hereof.

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



                                       10


     17. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of The Commonwealth of Massachusetts regardless of the
laws that might otherwise govern under applicable principles of conflicts of
laws thereof.

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

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

     20. ENTIRE AGREEMENT. Except as otherwise expressly provided herein or in
the Merger Agreement, this Agreement contains the entire agreement between the
parties with respect to the transactions contemplated hereunder and supersedes
all prior arrangements or understandings with respect thereof, written or oral.
The terms and conditions of this Agreement shall inure to the benefit of and be
binding upon the parties hereto and their respective successors and permitted
assigns. Nothing in this Agreement, expressed or implied, is intended to confer
upon any party, other than the parties hereto, and their respective successors
except as assigns, any rights, remedies, obligations or liabilities under or by
reason of this Agreement, except as expressly provided herein.

     21. CAPITALIZED TERMS. Capitalized terms used in this Agreement and not
defined herein shall have the meanings assigned thereto in the Merger Agreement.




           *                           *                            *


                                       11



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


                                           HOME PORT BANCORP, INC.


                                           By: /s/ KARL L. MEYER
                                               ---------------------------------
                                           Name:   Karl L. Meyer
                                           Title:  President and Chief Executive
                                                   Officer


                                           SEACOAST FINANCIAL SERVICES
                                           CORPORATION


                                           By: /s/ KEVIN G. CHAMPAGNE
                                               ---------------------------------
                                           Name:   Kevin G. Champagne
                                           Title:  President and Chief Executive
                                                   Officer






                                       12