EXHIBIT 99.1


Contact:    Charles R. Valade
            President and Chief Executive Officer
            (508) 793-8321

                  CNB FINANCIAL CORP. TO BEGIN DISCUSSIONS WITH
               UNITED FINANCIAL BANCORP, INC. AND ADDITIONAL PARTY
                   REGARDING UNSOLICITED ACQUISITION PROPOSALS

         WORCESTER, MASS. - MAY 29, 2009 - CNB Financial Corp. (OTCBB:CFNA),
parent company of Commonwealth National Bank, today announced that it plans to
begin discussions with United Financial Bancorp, Inc., the holding company for
United Bank, located in West Springfield, Massachusetts, regarding United
Financial Bancorp's unsolicited acquisition proposal. United Financial Bancorp
has offered to acquire each outstanding share of CNB Financial Corp. for $10.25
per share in a transaction consisting of an equal amount of stock and cash,
subject to elections by the shareholders. CNB Financial Corp. also will commence
discussions with an additional bank that also made an unsolicited acquisition
proposal.

         As previously announced, CNB Financial Corp. entered into a definitive
Agreement and Plan of Merger with Berkshire Hills Bancorp, Inc. which was
amended to provide that Berkshire Hills Bancorp would acquire each outstanding
share of CNB Financial Corp. in exchange for 0.4292 shares of Berkshire Hills
Bancorp common stock.

         The merger agreement with Berkshire Hills Bancorp remains in effect and
CNB Financial Corp. continues to be bound by its terms. CNB Financial Corp. may
not enter into a definitive agreement with United Financial Bancorp or the other
bank unless the merger agreement with Berkshire Hills Bancorp has first been
terminated, and CNB Financial Corp. is not entitled to unilaterally terminate
the merger agreement with Berkshire Hills Bancorp to accept a superior proposal.
Under the terms of the merger agreement, Berkshire Hills Bancorp may elect to
terminate the merger agreement if CNB Financial Corp.'s Board of Directors does
not recommend approval of the merger agreement and either party may terminate if
CNB Financial Corp.'s shareholders fail to approve the merger agreement. In
addition, CNB Financial Corp. and Berkshire Hills Bancorp may mutually agree to
terminate their merger agreement.

         Accordingly, there can be no assurances that these discussions will
lead to the termination of the merger agreement with Berkshire Hills Bancorp or
the execution of a definitive agreement with United Financial Bancorp or the
additional party.

ABOUT CNB FINANCIAL CORP. AND COMMONWEALTH NATIONAL BANK

Commonwealth National Bank, a wholly-owned subsidiary of CNB Financial Corp.,
opened its doors in December 2001. It was the first new bank started in the
Worcester area in more than 15 years. Recognized for its personalized service,
state-of-the art products and experienced bankers, Commonwealth offers branches
in Worcester at 33 Waldo Street, One West Boylston Street and 1393 Grafton
Street, as well as at 564 Main Street in Shrewsbury, 701 Church Street in
Northbridge and 26 West Boylston Street in West Boylston, Massachusetts.

THIS RELEASE CONTAINS FORWARD-LOOKING STATEMENTS THAT ARE BASED ON ASSUMPTIONS
AND MAY DESCRIBE FUTURE PLANS, STRATEGIES AND EXPECTATIONS OF CNB FINANCIAL
CORP. THESE FORWARD-LOOKING STATEMENTS ARE GENERALLY IDENTIFIED BY USE OF THE
WORDS "BELIEVE," "EXPECT," "INTEND," "ANTICIPATE," "ESTIMATE," "PROJECT" OR
SIMILAR EXPRESSIONS. CNB FINANCIAL CORP.'S ABILITY TO PREDICT RESULTS OR THE
ACTUAL EFFECT OF FUTURE PLANS OR STRATEGIES IS INHERENTLY UNCERTAIN. FACTORS



WHICH COULD HAVE A MATERIAL ADVERSE EFFECT ON THE OPERATIONS OF CNB FINANCIAL
CORP. AND ITS SUBSIDIARY INCLUDE, BUT ARE NOT LIMITED TO, CHANGES IN INTEREST
RATES, NATIONAL AND REGIONAL ECONOMIC CONDITIONS, LEGISLATIVE AND REGULATORY
CHANGES, MONETARY AND FISCAL POLICIES OF THE U.S. GOVERNMENT, INCLUDING POLICIES
OF THE U.S. TREASURY AND THE FEDERAL RESERVE BOARD, THE QUALITY AND COMPOSITION
OF THE LOAN OR INVESTMENT PORTFOLIOS, DEMAND FOR LOAN PRODUCTS, DEPOSIT FLOWS,
COMPETITION, DEMAND FOR FINANCIAL SERVICES IN CNB FINANCIAL CORP.'S MARKET AREA,
CHANGES IN REAL ESTATE MARKET VALUES IN CNB FINANCIAL CORP.'S MARKET AREA,
CHANGES IN RELEVANT ACCOUNTING PRINCIPLES AND GUIDELINES AND INABILITY OF THIRD
PARTY SERVICE PROVIDERS TO PERFORM. ADDITIONAL FACTORS THAT MAY AFFECT OUR
RESULTS ARE DISCUSSED IN CNB FINANCIAL CORP.'S ANNUAL REPORT INCLUDED IN THE
SECTION TITLED "RISK FACTORS," AND IN OTHER REPORTS ON FILE WITH THE SECURITIES
AND EXCHANGE COMMISSION.

THESE RISKS AND UNCERTAINTIES SHOULD BE CONSIDERED IN EVALUATING FORWARD-LOOKING
STATEMENTS AND UNDUE RELIANCE SHOULD NOT BE PLACED ON SUCH STATEMENTS. EXCEPT AS
REQUIRED BY APPLICABLE LAW OR REGULATION, CNB FINANCIAL CORP. DOES NOT
UNDERTAKE, AND SPECIFICALLY DISCLAIMS ANY OBLIGATION, TO RELEASE PUBLICLY THE
RESULT OF ANY REVISIONS THAT MAY BE MADE TO ANY FORWARD-LOOKING STATEMENTS TO
REFLECT EVENTS OR CIRCUMSTANCES AFTER THE DATE OF THE STATEMENTS OR TO REFLECT
THE OCCURRENCE OF ANTICIPATED OR UNANTICIPATED EVENTS.