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                UNITED STATES SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                    FORM 10-K


    [mark one]

        [X]       ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 2002

                                       OR

        [_]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

                         Commission File Number 0-12784




                              WESTBANK CORPORATION
- --------------------------------------------------------------------------------



       Massachusetts                                            04-2830731
- --------------------------------------------------------------------------------
        (State of                                            (I.R.S. Employer
      Incorporation)                                      Identification Number)


225 Park Avenue, West Springfield, Massachusetts                 01090-0149
- --------------------------------------------------------------------------------
   (Address of principal executive office)                       (Zip Code)


                                 (413) 747-1400
- --------------------------------------------------------------------------------
                               (Telephone Number)


           Securities registered pursuant to Section 12(b) of the Act:

                                                      Name of each exchange
           Title of each class                         on which registered
           -------------------                         -------------------
                 NONE                                          NONE


           Securities registered pursuant to Section 12(g) of the Act:

                          Common stock, $2.00 Par Value
                        Preferred stock, $5.00 Par Value
                        --------------------------------
                                (Title of Class)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past ninety days.    Yes [X]     No [_]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of the registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K.   [X]

Based on the closing sales price on June 28, 2002, the aggregate market value of
the voting stock held by non-affiliates of the registrant was $56,493,857.

The number of shares outstanding of the registrants common stock, $2.00 par
value, was 4,378,206 on March 1, 2003.

Portions of the Annual Report to Stockholders for the year ended December 31,
2002 are incorporated by reference into Parts I and II.

Portions of the Proxy Statement issued by the Corporation in connection with the
Annual Meeting to be held on April 16, 2003 are incorporated by reference into
Part III.
================================================================================


                              WESTBANK CORPORATION

                               INDEX TO FORM 10-K

PART I
- ------
Item 1     Business                                                          I-1

Item 2     Properties                                                        I-2

Item 3     Legal Proceedings                                                 I-2

Item 4     Submission of Matters to a Vote of Security Holders               I-2


PART II
- -------
Item 5     Market for the Corporation's Common Stock
           and Related Stockholder Matters                                  II-1

Item 6     Selected Financial Data                                          II-1

Item 7     Management's Discussion and Analysis of
           Financial Condition and Results of Operations                  II-1,2

Item 7-A   Quantitative and Qualitative Disclosures About
           Market Risk                                                    II-1,2

Item 8     Financial Statements and Supplementary Data                      II-2

Item 9     Changes in and Disagreements with Accountant
           on Accounting and Financial Disclosure                           II-2


PART III
- --------
Item 10    Directors and Executive Officers of the Registrant              III-1

Item 11    Executive Compensation                                          III-1

Item 12    Security Ownership of Certain
           Beneficial Owners and Management                                III-1

Item 13    Certain Relationships and Related Transactions                  III-1

Item 14    Controls and Procedures                                         III-1


PART IV
- -------
Item 15    Exhibits, Financial Statement
           Schedules and Reports on Form 8-K                                IV-1

           Signatures                                                       IV-2

           Section 302 Certifications                                     IV-3,4

           Exhibit Index                                                    IV-5


              WESTBANK CORPORATION, WEST SPRINGFIELD, MASSACHUSETTS

                                     PART I
                                     ------

ITEM 1. BUSINESS
- ------  --------

Reference is made to Page 4 of the Corporation's Annual Report to Stockholders
for the year ended December 31, 2002, wherein this subject is covered.

Statistical Disclosure by Bank Holding Companies
- ------------------------------------------------

The following statistical tables and accompanying text provide required
financial data about the Corporation and should be read in conjunction with the
Consolidated financial statements and related notes, appearing in the 2002
Annual Report to Stockholders and is incorporated herein by reference thereto:

                                                                      Page of
                                                                   Annual Report
                                                                   -------------
I.   Distribution of Assets, Liabilities and Stockholders' Equity:

     Interest Rates and Interest Differential                          10 and 11

     Rate/Volume Analysis of Interest Margin on Earning Assets                12

II.  Investment Portfolio                                      13, 30, 31 and 41

III. Loan Portfolio                                              14,31,32 and 41

     a. Types of Loans                                                 14 and 31

     b. Maturities and Sensitivities to Changes in Interest Rates    9,10 and 14

     c. Risk Elements                                   9, 15, 16, 17, 31 and 32

IV.  Summary of Loan Loss Experience                                   15 and 16

V.   Deposits                                                      17, 33 and 41

VI.  Return on Equity and Assets                                              18

VII. Short Term Borrowings                                     18, 33, 34 and 41

                                       I-1

ITEM 2. PROPERTIES
- ------  ----------

The Corporation had one principal banking subsidiary, Westbank, which operates
seventeen banking offices located in Massachusetts and Connecticut, as follows:

     ================================== =========== =========== ===========
                   LOCATION                OWNED       LEASED      TOTAL
                (MASSACHUSETTS)
     ---------------------------------- ----------- ----------- -----------
     Agawam (Feeding Hills)                              1           1
     ---------------------------------- ----------- ----------- -----------
     Chicopee                                1                       1
     ---------------------------------- ----------- ----------- -----------
     Chicopee - Supemarket                               1           1
     ---------------------------------- ----------- ----------- -----------
     East Longmeadow                         1                       1
     ---------------------------------- ----------- ----------- -----------
     East Longmeadow - Supemarket                        1           1
     ---------------------------------- ----------- ----------- -----------
     Holyoke                                 1                       1
     ---------------------------------- ----------- ----------- -----------
     Ludlow                                  1                       1
     ---------------------------------- ----------- ----------- -----------
     Southwick                                           1           1
     ---------------------------------- ----------- ----------- -----------
     West Springfield                        2           1           3
     ---------------------------------- ----------- ----------- -----------
     Westfield                               1                       1
     ---------------------------------- ----------- ----------- -----------
     Westfield - Supermarket                             1           1
     ---------------------------------- ----------- ----------- -----------
                (CONNECTICUT)
     ---------------------------------- ----------- ----------- -----------
     Putnam                                  1           1           2
     ---------------------------------- ----------- ----------- -----------
     Woodstock                                           1           1
     ---------------------------------- ----------- ----------- -----------
     Danielson                               1                       1
     ---------------------------------- ----------- ----------- -----------
     TOTAL                                   9           8          17
     ================================== =========== =========== ===========

All banking offices except the one in Holyoke have drive-in facilities and
twenty-four hour automated teller machines.

Title to the properties described as owned in the foregoing table is held by
Westbank with warranty deed with no material encumbrances. Westbank owns, with
no material encumbrances, land adjacent to the main office which is available
for parking and, through a subsidiary, also owns one other property adjacent to
the main office consisting of land also used as a parking lot.


ITEM 3. LEGAL PROCEEDINGS
- ------  -----------------

Certain litigation is pending against the Corporation and the its subsidiaries.
Management, after consultation with legal counsel, does not anticipate that any
liability arising out of such litigation will have a material effect on the
Corporation's Financial Statements.


ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
- ------  ---------------------------------------------------

NONE

                                       I-2

                                     PART II
                                     -------

ITEM 5. MARKET FOR CORPORATION'S COMMON STOCK AND RELATED STOCKHOLDER MATTERS
- ------  ---------------------------------------------------------------------

Reference is made to the inside back cover of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2002, wherein this subject is
covered.


ITEM 6. SELECTED FINANCIAL DATA
- ------  -----------------------

Reference is made to Page 5 of the Corporation's Annual Report to Stockholders
for the year ended December 31, 2002, wherein this subject is covered.


ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
- ------  -----------------------------------------------------------
        AND RESULTS OF OPERATIONS
        -------------------------

Reference is made to Pages 6 through 21 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2002, wherein this subject is
covered.


ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
- -------   ----------------------------------------------------------

Reference is made to Pages 9 and 10 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2002, wherein the subject matter is
covered.


Information Concerning Forward-Looking Statements; Safe Harbor
- --------------------------------------------------------------

The following forward-looking statements are made in accordance with the Private
Securities Litigation Reform Act of 1995.

The Corporation has made, and may make in the future, forward-looking statements
concerning future performance, including, but not limited to, future earnings
and events or conditions that may affect such future performance. These
forward-looking statements are based upon management's expectations and belief
concerning possible future developments and the potential effect of such future
developments on the Corporation. There is no assurance that such future
developments will be in accordance with management's expectations and belief or
that the effect of any future developments on the Corporation will be those
anticipated by management.

All assumptions that form the basis of any forward-looking statements regarding
future performance, as well as events or conditions that may affect such future
performance, are based on factors that are beyond the Corporation's ability to
control or predict with precision, including future market conditions and the
behavior of other market participants. Among the factors that could cause actual
results to differ materially from such forward-looking statements are the
following:

1.       The status of the economy in general, as well as in the Corporation's
         primary market areas of western Massachusetts and northeastern
         Connecticut;
2.       The real estate market in western Massachusetts and northeastern
         Connecticut;
3.       Competition in the Corporation's primary market area from other banks,
         especially in light of continued consolidation in the New England
         banking industry;
4.       Any changes in federal and state bank regulatory requirements; 5.
         Changes in interest rates;
6.       The cost and other effects of unanticipated legal and administrative
         cases and proceedings, settlements and investigations;
7.       Unanticipated changes in laws and regulations, including federal and
         state banking laws and regulations, to which the Corporation and its
         subsidiaries are subject;

                                      II-1

                               PART II (CONTINUED)
                               -------------------



8.       Changes in accounting policies and practices, as may be adopted by the
         Financial Accounting Standards Board or any regulatory agency having
         authority over the Corporation and/or its subsidiaries; and
9.       Disruption in general economic conditions due to military or terrorist
         activity.

Forward-looking statements speak only as of the date they were made. While the
Corporation periodically reassesses material trends and uncertainties affecting
the Corporation's performance in connection with its preparation of management's
discussion and analysis of results of operations and financial condition
contained in its quarterly and annual reports, the Corporation does not intend
to review or revise any particular forward-looking statement.


ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
- ------  -------------------------------------------

Reference is made to Pages 22 through 45 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2002, wherein this subject is
covered.


ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
- ------  ---------------------------------------------------------------
        FINANCIAL DISCLOSURE
        --------------------

NONE








                                      II-2


                                    PART III
                                    --------


ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
- -------  --------------------------------------------------

Reference is made to Pages 4 through 9 of the Corporation's Proxy Statement to
Stockholders for the 2003 Annual Meeting scheduled for April 16, 2003, wherein
this subject is covered.


ITEM 11. EXECUTIVE COMPENSATION
- -------  ----------------------

References is made to Pages 10 through 13 of the Corporation's Proxy Statement
to Stockholders for the 2003 Annual Meeting scheduled for April 16, 2003,
wherein this subject is covered.


ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
- -------  --------------------------------------------------------------

Reference is made to Pages 8 and 9 of the Corporation's Proxy Statement to
Stockholders for the 2003 Annual Meeting scheduled for April 16, 2003, wherein
this subject is covered.


ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
- -------  ----------------------------------------------

Reference is made to Pages 8 through 16, of the Corporation's Proxy Statement to
Stockholders for the 2003 Annual Meeting scheduled for April 16, 2003, wherein
this subject is covered under the caption "Beneficial Ownership of Stock and
Executive Compensation - Miscellaneous".


ITEM 14. CONTROLS AND PROCEDURES
- -------  -----------------------

Within 90 days prior to the filing date of this report, the Corporation carried
out an evaluation, under the supervision and with the participation of the
Corporation's management, including the Corporation's Chief Executive Officer
and Chief Financial Officer, of the effectiveness of the design and operation of
the Corporation's disclosure controls and procedures. Based on that evaluation,
the Chief Executive Officer and Chief Financial Officer concluded that the
Corporation's disclosure controls and procedures are effective to ensure that
information required to be disclosed by the Corporation in the reports that it
files or submits under the securities Exchange Act of 1934 is recorded,
processed, summarized and reported within the time periods specified in the
Securities and Exchange Commission's rules and forms.

There were no significant changes in the Corporation's internal controls or in
other factors that could significantly affect internal controls subsequent to
the date of their evaluations.












                                      III-1

                                     PART IV
                                     -------


ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
- -------  ---------------------------------------------------------------

The following documents are filed as a part of this report:

     1.   Financial Statements

          The following financial statements are incorporated in this Annual
          Report on Form 10-K by reference to the Corporation's Annual Report to
          Stockholders for the year ended December 31, 2002:

                         WESTBANK CORPORATION
                         --------------------                           Page of
                                                                         Annual
                                                                         Report
                                                                         ------


          Independent Auditors' Reports                                    51
          Consolidated Balance Sheets at December 31, 2002 and 2001        23
          Consolidated Statements of Income for the years ended
              December 31, 2002, 2001 and 2000                             24
          Consolidated Statement of Stockholders' Equity from
              January 1, 2000, to December 31, 2002                        25
          Consolidated Statements of Comprehensive Income for the
              years ended December 31, 2002, 2001 and 2000                 25
          Consolidated Statements of Cash Flows for the years ended
              December 31, 2002, 2001 and 2000                             26
          Notes to Consolidated Financial Statements                     27-50


          Current reports on Form 8-K Reporting other Events were filed by
          the Registrant during the year ended December 31, 2002:


                                      NONE

     2.   Financial Statement Schedules

          Financial Statement Schedules are omitted because they are
          inapplicable or not required.

     3.   Exhibits

          See accompanying Exhibit Index.



                                      IV-1

                                   SIGNATURES
                                   ----------

Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.

                                          WESTBANK CORPORATION


                                          By: /s/ Donald R. Chase
                                          -----------------------------------
                                          Donald R. Chase
                                          PRESIDENT AND CHIEF EXECUTIVE OFFICER


Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons in the capacities and on the
dates indicated.

SIGNATURE                            TITLE                               DATE
- --------------------------------------------------------------------------------


/s/ Donald R. Chase                  PRESIDENT AND CHIEF EXECUTIVE
- -----------------------------        OFFICER AND DIRECTOR                3/19/03
Donald R. Chase


/s/ Ernest N. Laflamme, Jr.          CHAIRMAN OF THE BOARD
- -----------------------------        AND DIRECTOR                        3/19/03
Ernest N. Laflamme, Jr.


/s/ John M. Lilly                    TREASURER AND CHIEF
- -----------------------------        FINANCIAL OFFICER                   3/19/03
John M. Lilly


/s/ Roland O. Archambault
- -----------------------------        DIRECTOR                            3/19/03
Roland O. Archambault


/s/ Mark A. Beauregard
- -----------------------------        DIRECTOR                            3/19/03
Mark A. Beauregard


/s/ David R. Chamberland
- -----------------------------        DIRECTOR                            3/19/03
David R. Chamberland


/s/ G. Wayne McCary
- -----------------------------        DIRECTOR                            3/19/03
G. Wayne McCary


/s/ Robert J. Perlak
- -----------------------------        CORPORATE CLERK AND DIRECTOR        3/19/03
Robert J. Perlak


/s/ George R. Sullivan
- -----------------------------        DIRECTOR                            3/19/03
George R. Sullivan


/s/ James E. Tremble
- -----------------------------        DIRECTOR                            3/19/03
James E. Tremble


                                      IV-2

                           SECTION 302 CERTIFICATIONS
                           SARBANES-OXLEY ACT OF 2002


I, Donald R. Chase, certify that:

1.       I have reviewed this annual report on Form 10-K of Westbank
         Corporation;

2.       Based on my knowledge, this annual report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this annual report;

3.       Based on my knowledge, the financial statements and other financial
         information included in this annual report fairly present in all
         material respects the financial condition, results of operations and
         cash flows of the registrant as of, and for, the periods presented in
         this annual report;

4.       The registrant's other certifying officer and I are responsible for
         establishing and maintaining the disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
         we have:

         a.       designed such disclosure controls and procedures to ensure
                  that material information relating to the registrant,
                  including its consolidated subsidiaries, is made known to us
                  by others within those entities, particularly during the
                  period in which this annual report is being prepared;

         b.       evaluated the effectiveness of the registrant's disclosure
                  controls and procedures as of a date within 90 days prior to
                  the filing date of this annual report (the "Evaluation Date");
                  and

         c.       presented in this annual report our conclusions about the
                  effectiveness of the disclosure controls and procedures based
                  on our evaluation as of the Evaluation Date;

5.       The registrant's other certifying officer and I have disclosed, based
         on our most recent evaluation, to the registrant's auditors and the
         audit committee of the board of directors (or persons performing the
         equivalent function):

         a.       all significant deficiencies in the design or operation of
                  internal controls that could adversely affect the registrant's
                  ability to record, process, summarize and report financial
                  data, and have identified for the registrant's auditors any
                  material weaknesses in internal controls; and

         b.       any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal controls; and

6.       The registrant's other certifying officer and I have indicated in this
         annual report whether or not there were significant changes in internal
         controls or in other factors that could significantly affect internal
         controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.


Date:    3/19/03                           /s/ Donald R. Chase
       -----------                         ------------------------------------
                                           Donald R. Chase
                                           President and Chief Executive Officer


                                      IV-3

                           SECTION 302 CERTIFICATIONS
                           SARBANES-OXLEY ACT OF 2002


I, John M. Lilly, certify that:

1.       I have reviewed this annual report on Form 10-K of Westbank
         Corporation;

2.       Based on my knowledge, this annual report does not contain any untrue
         statement of a material fact or omit to state a material fact necessary
         to make the statements made, in light of the circumstances under which
         such statements were made, not misleading with respect to the period
         covered by this annual report;

3.       Based on my knowledge, the financial statements and other financial
         information included in this annual report fairly present in all
         material respects the financial condition, results of operations and
         cash flows of the registrant as of, and for, the periods presented in
         this annual report;

4.       The registrant's other certifying officer and I are responsible for
         establishing and maintaining the disclosure controls and procedures (as
         defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
         we have:

         a.       designed such disclosure controls and procedures to ensure
                  that material information relating to the registrant,
                  including its consolidated subsidiaries, is made known to us
                  by others within those entities, particularly during the
                  period in which this annual report is being prepared;

         b.       evaluated the effectiveness of the registrant's disclosure
                  controls and procedures as of a date within 90 days prior to
                  the filing date of this annual report (the "Evaluation Date");
                  and

         c.       presented in this annual report our conclusions about the
                  effectiveness of the disclosure controls and procedures based
                  on our evaluation as of the Evaluation Date;

5.       The registrant's other certifying officer and I have disclosed, based
         on our most recent evaluation, to the registrant's auditors and the
         audit committee of the board of directors (or persons performing the
         equivalent function):

         a.       all significant deficiencies in the design or operation of
                  internal controls that could adversely affect the registrant's
                  ability to record, process, summarize and report financial
                  data, and have identified for the registrant's auditors any
                  material weaknesses in internal controls; and

         b.       any fraud, whether or not material, that involves management
                  or other employees who have a significant role in the
                  registrant's internal controls; and

6.       The registrant's other certifying officer and I have indicated in this
         annual report whether or not there were significant changes in internal
         controls or in other factors that could significantly affect internal
         controls subsequent to the date of our most recent evaluation,
         including any corrective actions with regard to significant
         deficiencies and material weaknesses.


Date:    3/19/03                           /s/ John M. Lilly
       -----------                         ------------------------------------
                                           John M. Lilly
                                           Treasurer and Chief Financial Officer


                                     IV-4


                                  EXHIBIT INDEX

                                                                        Page No.
                                                                        --------

3.        Articles of Organization and By-Laws, as amended                 **

          (a) Articles of Organization, as amended                          *

          (b) By-Laws, as amended                                           *

21.       Subsidiaries of Registrant                           TO BE INCLUDED

99.1      Certification of Periodic Report

99.2      Portions of the Corporation's Annual Report to Stockholders for
          year-end 2002 incorporated by reference into this annual report on
          Form 10-K

- ---------------
*   Incorporated by reference to identically numbered exhibits contained in
    Registrant's Annual Report on Form 10-K for the year ended December 31,
    1988.

**  Incorporated by reference to identically numbered exhibits contained in
    Registrant's Annual Report on Form 10-K for the year ended December 31,
    1987.







                                      IV-5