Commonwealth National Bank Opens Sixth Branch in Five Years.

Newest CNB location to serve customers in West Boylston

WEST BOYLSTON, Mass. -- CNB Financial Corp., (OTCBB:CFNA) the parent company for Commonwealth National Bank (CNB), today announced the opening of its newest branch at 26 West Boylston Street in West Boylston. This is the sixth branch that CNB has opened in the past five years. Other CNB locations include: 1393 Grafton Street, 33 Waldo Street, and 1 West Boylston Street in Worcester, as well as 564 Main Street in Shrewsbury and 701 Church Street in Whitinsville.

CNB will hold a special Grand Opening party on Saturday, Dec. 2, from 10 a.m. to noon at the new branch. Free food will be provided, along with free Worcester Sharks hats and pucks, with "Finz," the Worcester Sharks mascot on hand to help celebrate the festivities. Also planned is a live broadcast with WXLO'S Zito and Jen. Participants who open a new account will receive four free Sharks tickets, and anyone attending will be able to enter a drawing to win a $500 Best Buy shopping spree.

The opening of the West Boylston branch comes at the five-year milestone for CNB, marking a track record of unprecedented growth, regional and national top awards, and leadership and participation in numerous community-based programs.

"Five years to the month that Commonwealth National Bank opened its doors in downtown Worcester, we are delighted to be celebrating the commencement of our sixth branch to further serve people and businesses in our community," said Commonwealth National Bank President and CEO Charles R. Valade, "Our continued success demonstrates that we are meeting the banking needs of the region with convenient locations, exceptional customer service, and quality products. We are especially proud that we have become a community-based bank helping to make a difference in so many programs vital to Worcester County."

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 to open in the Worcester area in more than 15 years. Recognized for its personalized service, state-of-the art products and experienced bankers, CNB has three branches in Worcester at 33 Waldo Street, 1 West Boylston Street, 1393 Grafton Street, as well as 564 Main Street in Shrewsbury, 701 Church Street in Whitinsville, and 26 West Boylston Street in West Boylston.

For more information about Commonwealth National Bank and CNB Financial Corp., including detailed financial information, please visit: www.commonwealthworcester.com.

Certain statements in this press release, including statements regarding the anticipated development and expansion of the Bank's business, and the intent, belief or current expectations of the Company, its directors or its officers, are "forward-looking" statements (as such term is defined in the Private Securities Litigation Reform Act of 1995). Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements.