Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 121

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 121
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 (6) | Compensation actually paid (“CAP”) is defined by the SEC and is computed by starting with the 
 “Total” column of the Summary Compensation Table (“SCT”) for each year and then:              |

| • |     | subtracting the amount in the “Restricted Stock Awards” column of the SCT for such year, |

| • |     | adding, for all unvested equity awards granted during the reporting year and outstanding on the last day of the                                                               
 reporting year, the fair value as of the last day of the reporting year, utilizing the same assumptions as the Outstanding Equity Awards at 2024 Fiscal Year-End table below. |

| • |     | adding, for all unvested equity awards granted prior to the reporting year and outstanding on the last day of the                                                                                               
 reporting year, the change in fair value from the last day of the preceding year to the last day of the reporting year, utilizing the same assumptions as the Outstanding Equity Awards at 2024 Fiscal Year-End 
 table below.                                                                                                                                                                                                    |

| • |     | adding, for equity awards vesting during the reporting year, the change in fair value from the last day of the 
 preceding year to the vesting date,                                                                            |

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| • |     | adding the value of any dividends or other earnings paid in the reporting year on unvested equity awards that are 
 not otherwise included in the total compensation for the reporting year,                                          |

| • |     | subtracting the amount in the “Change in Pension Value & Nonqualified Deferred Compensation 
 Earnings” column of the SCT for such year, and                                              |

| • |     | adding, for all defined benefit and actuarial pension plans, (i) the service cost, calculated as the                                                                                                                                              
 actuarial present value attributable to services rendered during the reporting year, plus (ii) the prior service cost, calculated as the entire cost of benefits granted in a plan amendment during the reporting year that are attributed by the 
 benefit formula to services rendered in periods prior to the amendment.                                                                                                                                                                           |

The fair value of equity awards is computed in a manner consistent with the fair value methodology used to report Outstanding Equity Awards at Fiscal Year-End.This may result in a difference in the share value input used for the fair value calculation at year-endwhen compared to the share value used for performance-based share awards at time of award. The following tables reflect the adjustments made to SCT total compensation to compute CAP for the position of CEO and average CAP for CN