Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 209

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 209
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 bound; |

| • |     | foreclose on or take a deed or title to any commercial real estate without first conducting a Phase I                                                                                                    
 environmental assessment of the property or foreclose on any commercial real estate if such environmental assessment indicates the presence of a hazardous substance in amounts which would be material; |

| • |     | cause or allow the loss of insurance coverage that would have a material adverse effect to ESSA, unless replaced            
 with coverage which is substantially similar (in amount and insurer) to that in effect at the time of the merger agreement; |

| • |     | discharge or satisfy any lien or pay any obligation or liability, whether absolute or contingent, due or to 
 become due, except in the ordinary course of business consistent with normal banking practices;             |

| • |     | take any action or fail to take any action that is intended or is reasonably likely to result in (i) any of                                                                                                                                       
 their representations and warranties set forth in the merger agreement being or becoming untrue in any material respect at any time at or prior to the effective time, (ii) any of the conditions to the merger set forth in the merger agreement 
 not being satisfied, (iii) a material violation of any provision of the merger agreement, or (iv) a material delay of the approval or completion of the merger except, in each case, as required by applicable law or regulation; or              |

| • |     | enter into any contract with respect to, or otherwise agree or commit to do, any of these prohibited activities. |

Conduct of Business of CNB Pending the Merger Under the merger agreement, CNB has agreed that, until the effective time of the merger or the termination of the merger agreement, CNB will not, and will cause each of its subsidiaries to not, except as expressly permitted by the merger agreement or with the prior written consent of ESSA or as otherwise required by law or any governmental authority:

| • |     | take any action or fail to take any action that is intended or is reasonably likely to result in (i) any of                                                                                                                                  
 its representations and warranties set forth in the merger agreement being or becoming untrue in any material respect at any time at or prior to the effective time, (ii) any of the conditions to the merger agreement not being satisfied, 
 (iii) a material violation of any provision of the merger agreement, (iv) preventing the merger from qualifying as a “reorganization” within the meaning of Section 368(a) of the Code