Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 125

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 125
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 after the award grant date of January 31, 2021.                                        |

Pension Benefits Supplemental Executive Retirement – Defined Benefit

| Name                |     | Plan 
 Name |      |    |     |      Number of 
 Years Credited 
        Service |     | Present Value 
 of            
 Accumulated   
 Benefit       
 ($)           |         |
| Michael D. Peduzzi  |     |      | SERP | -1 |     |              3 |     |               | 525,242 |
| Tito L. Lima        |     |      | SERP | -1 |     |              6 |     |               | 339,085 |
| Martin T. Griffith  |     |      | SERP | -1 |     |              9 |     |               | 445,357 |
| Angela D. Wilcoxson |     |      | —    |    |     |              — |     |               |       — |
| Gregory M. Dixon    |     |      | —    |    |     |              — |     |               |       — |

| (1) | The SERP is described below. The cost of these plans is effectively offset by 
 tax-free earnings from CNB Bank-owned life insurance.                         |

Retirement Plan CNB maintains the CNB Bank Employee’s Savings and Profit Sharing Plan and Trust (the “Plan”). The Plan permits eligible employees to make pre-taxand Roth contributions up to 70% of their salary. Employees 21 years of age or over with a minimum of 90 days of service are eligible for matching contributions by CNB at 100% of elective contributions not to exceed 5% of plan salary. A profit-sharing discretionary non-contributorypension plan component is in place for employees 21 years of age or over with a minimum of one-yearwith 1,000 hours service and allows employer contributions in an amount equal to a percentage of eligible compensation plus 5.7% of the compensation for all employees in excess of $168,600, subject to a $345,000 salary limit. NEOs in CNB’s 2024 proxy statement report (other than Ms. Wilcoxson and Mr. Dixon who achieved NEO status for the first time in 2024) were not eligible to participate in the profit-sharing plan in 2024. NEOs are ineligible to receive profit-sharing contributions in the first year following their achievement of NEO status. Thus, Ms. Wilcoxson and Mr. Dixon