Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 34

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 34
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 or other agreements set                                                                                                                                          
 forth in the merger agreement (provided that the terminating party is not then in material breach of any representation, warranty, covenant or other agreement contained in the merger agreement), which breach is not cured within 30 days of written 
 notice of the breach, or by its nature cannot be cured prior to the closing of the merger, and such breach would entitle the non-breaching party not to consummate the merger; or                                                                      |

In addition, CNB may terminate the merger agreement if:

| • |     | ESSA breaches the non-solicitation provisions in the merger agreement; |

| • |     | the ESSA Board of Directors: |

| • |     | fails to recommend approval of the merger agreement, or withdraws, modifies or changes such recommendation in a 
 manner adverse to CNB’s interests; or                                                                           |

| • |     | recommends, proposes or publicly announces its intention to recommend or propose to engage in an acquisition 
 transaction with any person other than CNB or any of its subsidiaries; or                                    |

| • |     | ESSA fails to call, give notice of, convene and hold its special meeting. |

ESSA may terminate the merger agreement, subject to its compliance with the merger agreement, if ESSA has received an acquisition proposal, and the ESSA Board of Directors has made a determination that such proposal is a superior proposal and has determined to accept such proposal. Termination Fee(Page 171) ESSA has agreed to pay CNB a termination fee of $8.8 million if:

| • |     | CNB terminates the merger agreement as a result of: |

| • |     | ESSA materially breaching the non-solicitation provisions in the merger 
 agreement;                                                              |

| • |     | ESSA materially breaching the shareholder approval provisions in the merger agreement by failing to call, give 
 notice of, convene and hold the ESSA special meeting;                                                          |

| • |     | the ESSA Board of Directors: |

| • |     | failing to recommend approval of the merger agreement, or withdrawing, modifying or changing such recommendation 
 in a manner adverse to CNB’s interests; or                                                                       |

18

| • |     | recommending, proposing or publicly announcing its intention to recommend or propose to engage in an acquisition 
 transaction with any person other than CNB or any of its subsidiaries; or                                        |

| • |     | ESSA or ESSA Bank enters