Company: CCNE
Filing Date: 2025-03-05
Form Type: 424B3
Source: 0001193125-25-047258
Chunk: 238

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-03-05
Form: 424B3
Chunk 238
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 adjustments. |

| (AA) | Reflects the additional state tax expense incurred from the Pennsylvania Shares tax. |

| (AB) | Reflects elimination of historical amortization expense and recognition of the core deposit intangible asset of 
 $31.4 million amortized over ten years using the sum-of-years digits method.                                    |

| (AC) | Reflects incremental tax impact of respective adjustments (assuming a 21% tax rate). |

| (AD) | Reflects elimination of weighted average shares outstanding of ESSA. |

| (AE) | Reflects shares issued to ESSA as part of merger consideration. This is not a divestiture adjustment, but          
 rather the shares issued as part of the merger consideration that CNB management determined to separately present. |

194

CNB FINANCIAL CORPORATION UNAUDITED PRO FORMA INCOME STATEMENT FOR THE YEAR ENDED DECEMBER 31, 2023 (In thousands)

| INTEREST AND DIVIDEND INCOME                                    
 Loans receivable including fees                                 |     | Acquirer  
 (CNB      
 Financial 
 Corp.)    |         |   |     | Target   
 (ESSA    
 Bancorp, 
 Inc.)    |        |   |     | Purchase    
 Accounting  
 Adjustments |         |   |     | Ref |     |   |     | Divestiture 
 Adjustments |        |   |     | Ref |     |   |     | Pro      
 Forma    
 Combined |         |   |
|:----------------------------------------------------------------|:----|:----------|--------:|:--|:----|:---------|-------:|:--|:----|:------------|--------:|:--|:----|:----|:----|:--|:----|:------------|-------:|:--|:----|:----|:----|:--|:----|:---------|--------:|:--|
| Interest and fees on loans receivable                           |     | $         | 273,220 |   |     | $        | 78,658 |   |     | $           |  28,845 |   |     |     | (V  | ) |     | $           | (4,188 | ) |     |     | (W  | ) |     | $        | 376,535 |   |
| Processing fees on PPP loans                                    |     |           |       3 |   |     |          |      — |   |