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, 2001

                                       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 Incorporation)                                     (I.R.S. Employer
                                                          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 March 1, 2002 the aggregate market value of
the voting stock held by nonaffiliates of the registrant was $45,082,318.

The number of shares outstanding of the registrants common stock, $2.00 par
value was 4,265,120 on March 1, 2002.

Portions of the Annual Report to Stockholders for the year ended December 31,
2001 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 17, 2002 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

PART III

Item 8   Financial Statements and Supplementary Data                     III - 1

Item 9   Changes in and Disagreements with Accountant
         on Accounting and Financial Disclosure                          III - 1

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

PART IV

Item 14  Exhibits, Financial Statement
         Schedules and Reports on Form 8-K                                IV - 1

         Signatures                                                       IV - 2

         Exhibit Index                                                    IV - 3




              WESTBANK CORPORATION, WEST SPRINGFIELD, MASSACHUSETTS

                                     PART I

ITEM 1 BUSINESS

Reference is made t o Page 4 of the Corporation's Annual Report to Stockholders
for the year ended December 31, 2001, 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 2001
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                                              9 and 10

      Rate/Volume Analysis of Interest Margin on Earning Assets                                   11

II.   Investment Portfolio                                                         12, 28, 29 and 41

III.  Loan Portfolio                                                               13, 29, 30 and 41

      a.  Types of Loans                                                                   13 and 29

      b.  Maturities and Sensitivities to Changes in Interest Rates                      8, 9 and 13

      c.  Risk Elements                                                     8, 14, 15, 16, 29 and 30

IV.   Summary of Loan Loss Experience                                                      14 and 15

V.    Deposits                                                                         16, 31 and 41

VI.   Return on Equity and Assets                                                                 17

VII.  Short Term Borrowings                                                        17, 31, 32 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
              (MASSACHUSETTS)              OWNED      LEASED     TOTAL
         ----------------------------------------------------------------
                                                        
         Agawam (Feeding Hills)                          1         1
         ----------------------------------------------------------------

         Chicopee                            1                     1
         ----------------------------------------------------------------

         Chicopee - Supermarket                          1         1
         ----------------------------------------------------------------

         East Longmeadow                     1                     1
         ----------------------------------------------------------------

         East Longmeadow - Supermarket                   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                               8           9        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 page 48 of the Corporation's Annual Report to Stockholders
for the year ended December 31, 2001, 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, 2001, 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 19 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2001, wherein this subject is
covered.

Information Concerning Forward-Looking Statements; Safe Harbor

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 the Corporation's management.

All assumptions that form the basis of any forward-looking statements regarding
future performance, as well as events or conditions which 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, 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; and

      6.    The cost and other effects of unanticipated legal and administrative
            cases and proceedings, settlements and investigations.

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 in light
of future events. The forward-looking statements in this report are intended to
be subject to the Safe Harbor protection of the federal securities laws.


                                     II - 1


                                    PART III

ITEM 8 FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Reference is made to Pages 20 through 45 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 2001, wherein this subject is
covered.

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

                                      NONE

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 2002 Annual Meeting scheduled for April 17, 2002, 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 2002 Annual Meeting scheduled for April 17, 2002,
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 2002 Annual Meeting scheduled for April 17, 2002, 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 2002 Annual Meeting scheduled for April 17, 2002, wherein
this subject is covered under the caption "Beneficial Ownership of Stock and
Executive Compensation - Miscellaneous".


                                     III - 1


                                     PART IV

ITEM 14 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, 2001:

                              WESTBANK CORPORATION



                                                                                             Page of
                                                                                              Annual
                                                                                              Report
                                                                                             -------
                                                                                          
            Independent Auditors' Reports                                                         46
            Consolidated Balance Sheets at December 31, 2001 and 2000                             20
            Consolidated Statements of Income for the years ended
                December 31, 2001, 2000 and 1999                                                  21
            Consolidated Statement of Stockholders' Equity from January 1, 1999,
                to December 31, 2001                                                              22
            Consolidated Statements of Comprehensive Income for the years
                ended December 31, 2001, 2000 and 1999                                            22
            Consolidated Statements of Cash Flows for the years ended
                December 31, 2001, 2000 and 1999                                                  23
            Notes to Consolidated Financial Statements                                       24 - 45


            Current reports on Form 8-K Reporting other Events were filed by the
            Registrant during the year ended December 31, 2001:

                                      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
                                           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/                              President and
- ---------------------------------        Chief Executive Officer and Director     March 20, 2002
Donald R. Chase


                                         Chairman of the Board
- ---------------------------------        and Director                             March 20, 2002
Ernest N. Laflamme, Jr.


        /s/                              Treasurer and
- ---------------------------------        Chief Financial Officer                  March 20, 2002
John M. Lilly


        /s/
- ---------------------------------        Director                                 March 20, 2002
Roland O. Archambault


        /s/
- ---------------------------------        Director                                 March 20, 2002
Mark A. Beauregard



- ---------------------------------        Director                                 March 20, 2002
David R. Chamberland


        /s/
- ---------------------------------        Director                                 March 20, 2002
G. Wayne McCary


        /s/
- ---------------------------------        Corporate Clerk and Director             March 20, 2002
Robert J. Perlak


        /s/
- ---------------------------------        Director                                 March 20, 2002
George R. Sullivan


        /s/
- ---------------------------------        Director                                 March 20, 2002
James E. Tremble



                                     IV - 2


                                  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


*     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 - 3