Company: CCNE
Filing Date: 2025-04-09
Form Type: 425
Source: 0001193125-25-076836
Chunk: 6

Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-04-09
Form: 425
Chunk 6
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 is hereby supplemented by adding the following to the first paragraph thereunder as a new third sentence at the top of page 129 of the joint proxy statement/prospectus: For more information about certain of the assumptions provided by the senior management of CNB for use in Piper Sandler’s pro forma analysis, see the Investor Presentation filed by CNB as an exhibit to its Current Report on Form 8-Kfiled with the SEC on January 10, 2025, which is incorporated by reference herein.

8. The disclosure under the heading “The Merger — Opinion of ESSA’s Financial Advisor — Selected Companies Analysis of ESSA” is hereby amended by adding the following table below the table titled “Description of Selected Companies” on page 136 of the joint proxy statement/prospectus: Description of Selected Companies (continued) (1)

| Institution Name                        
 (Dollars in thousands)                  |     | Total Assets |           |     | Tangible   
 Equity/    
 Tangible   
 Assets (%) |      |     | Net      
 Interest 
 Margin   
 (%)      |      |     | NPAs/  
 Assets 
 (%)    |      |     | ROAA 
 (%)  |      |     | ROAE 
 (%)  |       |
|:----------------------------------------|:----|:-------------|----------:|:----|:-----------|-----:|:----|:---------|-----:|:----|:-------|-----:|:----|:-----|-----:|:----|:-----|------:|
| Citizens & Northern Corporation         |     | $            | 2,670,822 |     |            | 8.51 |     |          | 3.30 |     |        | 0.88 |     |      | 0.87 |     |      |  8.56 |
| Embassy Bancorp, Inc.                   |     | $            | 1,715,194 |     |            | 6.68 |     |          | 2.22 |     |        | 0.07 |     |      | 0.63 |     |      | 10.37 |
| ENB Financial Corp                      |     | $            | 2,092,471 |     |            | 6.46 |     |          | 2.85 |     |        | 0.47 |     |      | 0.81 |     |      | 13.50 |
| Fidelity D