Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 74

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 74
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 has for the past three years been an employee of CNB or

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any of its affiliates; no immediate family members of any of them is or has for the past three years been an executive officer of CNB or any of its affiliates; and they otherwise meet the standards for independence required by NASDAQ. The CNB Board of Directors has also determined that Mr. Varischetti qualifies as an “audit committee financial expert” as such term is currently defined in Item 407(d)(5) of Regulation S-K.Mr. Varischetti is also an independent director. The Audit Committee must pre-approveall permitted non-auditservices performed by CNB’s external independent registered public accounting firm. The Audit Committee may delegate such authority to a subcommittee, provided that any decisions of the subcommittee are presented to the full Audit Committee at its next scheduled meeting. The Audit Committee has submitted the following report (the “Audit Committee Report”) for inclusion in this joint proxy statement/prospectus: The Audit Committee has reviewed the audited financial statements for the year ended December 31, 2024 and has discussed them with management. The Audit Committee has also discussed with Forvis Mazars, LLP, CNB’s external independent registered public accounting firm, the matters required to be discussed by the Public Company Accounting Oversight Board’s Auditing Standard No. 16 and by SEC rules. The Audit Committee has received the written disclosures and the letter from Forvis Mazars, LLP required by applicable requirements of the Public Company Accounting Oversight Board regarding Forvis Mazars, LLP’s communications with the Audit Committee, and has discussed with Forvis Mazars, LLP their independence. Based on this, the Audit Committee recommended to the CNB Board of Directors that the audited financial statements be included in CNB Financial Corporation’s Annual Report on Form 10-Kfor the fiscal year ended December 31, 2024 for filing with the SEC. Submitted by the Audit Committee:

| Peter C. Varischetti, Committee Chairperson |     | Michael Obi       |     | Joel E. Peterson |
| Jeffrey S. Powell                           |     | Nicholas N. Scott |     |                  |

This report of the Audit Committee shall not be deemed incorporated by reference by any general statement incorporating by reference this joint proxy statement/prospectus into any filing under the Exchange Act and shall not be deemed filed under the Exchange Act. Executive Compensation and Personnel Committee The Executive Compensation and Personnel Committee of the CNB Board of Directors (the “ECC”) consists of the