1
                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, 1999

                                                 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, 2000 the aggregate market value of
the voting stock held by nonaffiliates of the registrant was $37,923,931.

The number of shares outstanding of the registrants common stock, $2.00 par
value was 4,273,119 on March 1, 2000.

Portions of the Annual Report to Stockholders for the year ended December 31,
1999 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 19, 2000 are incorporated by reference into
Part III.
   2
                              WESTBANK CORPORATION


                               INDEX TO FORM 10-K


PART I

Item 1   Business                                                            I-1

Item 2   Properties                                                          I-2

Item 3   Legal Proceedings                                                   I-3

Item 4   Submission of Matters to a vote of Security Holders                 I-3


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
   3
              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, 1999, 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 1999
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 39

III. Loan Portfolio                                                              13, 29, 30 and 39

     a.  Types of Loans                                                                         13

     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 39

VI.  Return on Equity and Assets                                                                17

VII. Short Term Borrowing                                                        17, 31, 32 and 38




                                      I - 1
   4
ITEM 2   PROPERTIES

The Corporation had two principal banking subsidiaries, Park West Bank and Trust
Company ("Park West") and Cargill Bank ("Cargill"). Park West operates thirteen
banking offices located in western Massachusetts, as follows:




=================================================================
         LOCATION                 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
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
TOTAL                               6             7          13
=================================================================


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
Park West with warranty deed with no material encumbrances. Park West 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.

Cargill operates five banking offices located in northeast Connecticut, as
follows:



=================================================================
         LOCATION                 OWNED        LEASED       TOTAL
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
                                                   
Putnam                              1             1           2
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
Woodstock                                         1           1
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
Quinebaug                           1                         1
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
Danielson                           1                         1
- - - - - - - - - - - - - - - - - -----------------------------------------------------------------
TOTAL                               3             2           5
=================================================================



All general banking facilities 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 Cargill with warranty deed with no material
encumbrances.


                                       I-2
   5
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-3
   6
                                     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, 1999, 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, 1999, 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, 1999, wherein this subject is
covered.

Information Concerning Forward-Looking Statements.

Westbank 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 which 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 Westbank. 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 Westbank will be those anticipated by
Westbank 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 Westbank'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 Westbank's
                  primary market areas, western Massachusetts and northeastern
                  Connecticut;

         2.       The real estate market in western Massachusetts and
                  northeastern Connecticut;

         3.       Competition in Westbank'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 Westbank 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, Westbank does not
intend to review or revise any particular forward-looking statement in light of
future events.



                                      II-1
   7
                                    PART III

ITEM 8   FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Reference is made to Pages 20 through 42 of the Corporation's Annual Report to
Stockholders for the year ended December 31, 1999, 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 8 of the Corporation's Proxy Statement to
Stockholders for the 2000 Annual Meeting scheduled for April 19, 2000, wherein
this subject is covered.


ITEM 11  EXECUTIVE COMPENSATION

References is made to Pages 8 through 11 of the Corporation's Proxy Statement to
Stockholders for the 2000 Annual Meeting scheduled for April 19, 2000, wherein
this subject is covered.


ITEM 12  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Reference is made to Pages 6 and 7 of the Corporation's Proxy Statement to
Stockholders for the 2000 Annual Meeting scheduled for April 19, 2000, wherein
this subject is covered.


ITEM 13  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

Reference is made to Pages 6 through 13, of the Corporation's Proxy Statement to
Stockholders for the 2000 Annual Meeting scheduled for April 19, 2000, wherein
this subject is covered under the caption "Beneficial Ownership of Stock and
Executive Compensation - Miscellaneous".



                                     III - 1
   8
                                     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,
               1999:



                              WESTBANK CORPORATION



                                                                                            Page of
                                                                                             Annual
                                                                                             Report
                                                                                            -------

                                                                                              
               Independent Auditors' Reports                                                     43
               Consolidated Balance Sheets at December 31, 1999 and 1998                         20
               Consolidated Statements of Income for the years ended
                   December 31, 1999, 1998 and 1997                                              21
               Consolidated Statement of Stockholders' Equity from January 1, 1997,
                   to December 31, 1999                                                          22
               Consolidated Statements of Comprehensive Income for the years
                   ended December 31, 1999, 1998 and 1997                                        22
               Consolidated Statements of Cash Flows for the years ended
                   December 31, 1999, 1998 and 1997                                              23
               Notes to Consolidated Financial Statements                                   24 - 42



               Current reports on Form 8-K Reporting other Events were filed by
               the Registrant on:

                                      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
   9
                                   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   March 17, 2000
Donald R. Chase

/s/ Ernest N. Laflamme, Jr.       Chairman of the Board
- - - - - - - - - - - - - - - - - -----------------------------     and Director                           March 17, 2000
Ernest N. Laflamme, Jr.

/s/ John M. Lilly                 Treasurer and
- - - - - - - - - - - - - - - - - -----------------------------     Chief Financial Officer                March 17, 2000
John M. Lilly

/s/ Roland O. Archambault         Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
Roland O. Archambault


/s/ Mark A. Beauregard            Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
Mark A. Beauregard


/s/ David R. Chamberland          Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
David R. Chamberland


                                  Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
Leroy F. Jarrett


/s/ G. Wayne McCary               Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
G. Wayne McCary


/s/ Robert J. Perlak              Corporate Clerk and Director           March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
Robert J. Perlak


/s/ George R. Sullivan            Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
George R. Sullivan


/s/ James E. Tremble              Director                               March 17, 2000
- - - - - - - - - - - - - - - - - -----------------------------
James E. Tremble



                                      IV-2
   10
                                  EXHIBIT INDEX



                                                                                 Page No.
                                                                                 --------


                                                                 
3.       Articles of Organization, as amended                                          **

         (a)  Articles of Organization, as amended                                      *

         (b)  By-Laws, as amended                                                       *

10.1     Employment Contract dated October 1, 1986, between
         William A. Franks, Jr. and Westbank Corporation                              ***

10.12    Termination Agreement dated February 20, 1987, between
         Donald R. Chase and Park West Bank and Trust Company                         ***

10.14    Termination Agreement dated February 20, 1987,
         between Stanley F. Osowski and CCB, Inc.                                     ***

10.15    1985 Incentive Stock Option Plan for Key Employees                             *

10.16    1995 Directors Stock Option Plan                                            ****

10.17    1996 Stock Incentive Plan                                                  *****

13.      1995 Annual Report to Stockholders                            ARS (IFC 1-36 IBC)

21.      Subsidiaries of Registrant                                        TO BE INCLUDED

27.      Financial Data Schedule                                           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

***      Incorporated by reference to identically numbered exhibits contained in
         Registrant's Annual Report on Form 10-K for the year ended December 31,
         1986

****     Incorporated by reference to identically numbered exhibits contained in
         Registrant's Annual Report on Form 10-K for the year ended December 31,
         1995

*****    Incorporated by reference to identically numbered exhibits contained in
         Registrant's 1996 Proxy Statement



                                      IV-3