Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 33

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 33
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 with their fiduciary duties under applicable law. Conditions to Completion of the Merger(Page 168) As more fully described in this joint proxy statement/prospectus and the merger agreement, the completion of the merger depends on a number of conditions being satisfied or waived, including, but not limited to:

| • |     | shareholders of CNB having approved the CNB share issuance proposal; |

| • |     | shareholders of ESSA having approved the ESSA merger proposal; |

| • |     | CNB and ESSA having obtained all regulatory approvals and/or waivers required to consummate the transactions 
 contemplated by the merger agreement and all related statutory waiting periods having expired;               |

| • |     | the absence of any judgment, order, injunction or decree, or any statute, rule or regulation enacted, entered,                                       
 promulgated or enforced, preventing, prohibiting or making illegal the consummation of any of the transactions contemplated by the merger agreement; |

| • |     | CNB and ESSA having each received a legal opinion from their respective counsel regarding treatment of the merger 
 as a “reorganization” for U.S. federal income tax purposes;                                                       |

| • |     | the representations and warranties of each of CNB and ESSA in the merger agreement being accurate, subject to 
 exceptions that would not have a material adverse effect;                                                     |

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| • |     | CNB and ESSA having each performed in all material respects all obligations required to be performed by it; and |

| • |     | the shares of CNB common stock to be issued in the merger having been approved for listing on NASDAQ. |

Termination of the Merger Agreement(Page 170) CNB and ESSA can mutually agree to terminate the merger agreement at any time before the merger has been completed, and either company can terminate the merger agreement if:

| • |     | any regulatory approval required for consummation of the merger and the other transactions contemplated by the                                                                                                    
 merger agreement has been denied by final, nonappealable action of any regulatory authority, or an application for regulatory approval has been permanently withdrawn at the request of a governmental authority; |

| • |     | the required approval of the CNB share issuance proposal by CNB shareholders or the required approval of the ESSA 
 merger proposal by ESSA shareholders is not obtained;                                                             |

| • |     | the other party materially breaches any of its representations, warranties, covenants