Company: CCNE
Filing Date: 2025-10-08
Form Type: 8-K/A
Source: 0001193125-25-234511
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Company: CNB FINANCIAL CORP/PA
Filing Date: 2025-10-08
Form: 8-K/A
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 23, 2025 CNB FINANCIAL CORPORATION (Exact name of registrant as specified in its charter)

| Pennsylvania                    |     | 001-39472   |     | 25-1450605         |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -Commission 
 File Number |     | -I.R.S. Employer   
 Identification No. |

1 South Second Street PO Box 42 Clearfield, Pennsylvania 16830 (Address of principal executive offices, zip code) Registrant’s telephone number, including area code: (814) 765-9621 Not Applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-Kfiling is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |

| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |

| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |

| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of the Act:

| Title of each class                                                                                                             |     | Trading 
 Symbol  |     | Name of each exchange       
 on which registered         |
| Common Stock, no par value                                                                                                      |     | CCNE    |     | The NASDAQ Stock Market LLC |
| Depositary Shares (each representing a 1/40th interest in a share of 7.125% Series A Non-Cumulative, Perpetual Preferred Stock) |     | CCNEP   |     | The NASDAQ Stock Market LLC |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 193