Business Description

CNB Financial Corporation (the "Corporation") is a financial holding company registered under the Bank Holding Company Act of 1956, as amended (the "BHC Act"). It was incorporated under the laws of the Commonwealth of Pennsylvania in 1983 for the purpose of engaging in the business of a financial holding company. On April 26, 1984, the Corporation acquired all of the outstanding capital stock of County National Bank, a national banking chartered institution. In December 2006, County National Bank changed its name to CNB Bank (the "Bank") and became a state bank chartered in Pennsylvania and subject to regulation by the Pennsylvania Department of Banking and Securities and the Federal Deposit Insurance Corporation. In October 2013, the Corporation acquired FC Banc Corp. and its subsidiary, The Farmers Citizens Bank. In July 2016, the Corporation acquired Lake National Bank, and in July 2020, the Corporation acquired Bank of Akron. On July 23, 2025, the Corporation completed its previously announced acquisition of ESSA Bancorp, Inc. ("ESSA") and its subsidiary bank, ESSA Bank & Trust Company ("ESSA Bank"), pursuant to the definitive merger agreement (the "Merger Agreement") dated as of January 9, 2025. The Corporation’s acquisition of ESSA was an all-stock transaction. Under the terms of the Merger Agreement, ESSA merged with and into the Corporation, with the Corporation as the surviving entity, and immediately thereafter, ESSA Bank merged with and into the Bank, with the Bank as the surviving bank. Banking offices of ESSA Bank operate under the trade name ESSA Bank, a division of CNB Bank. Pursuant to the Merger Agreement, each outstanding share of ESSA common stock was converted into the right to receive 0.8547 shares of the Corporation’s common stock. The total consideration paid to ESSA shareholders was approximately $202.6 million, comprised of approximately 8,359,430 shares of the Corporation's common stock, valued at approximately $202.5 million based on the July 23, 2025 closing price of $24.23 per share of the Corporation's common stock, and $21 thousand in cash in lieu of fractional shares. The ESSA acquisition has extended CNB Bank’s branch network into the Northeastern Region including the Lehigh Valley of Pennsylvania through the addition of ESSA’s 20 community offices. In addition to the Bank, the Corporation has four other subsidiaries. CNB Securities Corporation is incorporated in Delaware and currently maintains investments in debt and equity securities. CNB Insurance Agency, incorporated in Pennsylvania, provides for the sale of nonproprietary annuities and other insurance products. CNB Risk Management, Inc. is a Delaware-based captive insurance company which insures against certain risks unique to the operations of the Corporation and its subsidiaries and for which insurance may not be currently available or economically feasible in today's insurance marketplace. Holiday Financial Services Corporation ("Holiday"), incorporated in Pennsylvania, offers small balance unsecured loans and secured loans, primarily collateralized by automobiles and equipment, to borrowers with higher risk characteristics and currently has nine offices within the Corporation’s market area. CNB Bank The Bank was originally chartered as a national bank in 1934 and is now a Pennsylvania-chartered bank. The CNB Bank franchise operates nineteen full-service branch locations in Central and North Central Pennsylvania. ERIEBANK, a division of the Bank, began operations in 2005. In July 2016, the Corporation acquired Lake National Bank, which operated two full-service branches in Mentor, Ohio, approximately 20 miles east of Cleveland, Ohio. The Bank continues to operate one of these branch locations within its ERIEBANK franchise, with the other location ceasing operations in August 2020. In December 2021, the Corporation opened a full-service branch in Cleveland, Ohio. The Bank currently operates fourteen full-service branch locations within its ERIEBANK franchise, a division of the Bank, with its headquarters in Erie, Pennsylvania. In October 2013, the Corporation acquired FC Banc Corp. and its subsidiary, The Farmers Citizens Bank. The Bank currently operates seven full-service branch locations as FCBank, a division of the Bank, with its headquarters in Worthington, Ohio. 1 Table of Contents In 2016, the Bank received regulatory approval to conduct business in the State of New York as BankOnBuffalo, a division of the Bank.…