# EDGAR Filing Document

**Accession Number:** 0000879635
**File Stem:** 0001628280-25-058968
**Filing Date:** 2025-12
**Character Count:** 8018
**Document Hash:** b58bc7bcaa8652e9c0620a5c56f9f2f8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-058968.hdr.sgml**: 20251229

**ACCESSION NUMBER**: 0001628280-25-058968

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20251223

**ITEM INFORMATION**: Changes in Registrant's Certifying Accountant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251229

**DATE AS OF CHANGE**: 20251229

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MID PENN BANCORP INC
- **CENTRAL INDEX KEY:** 0000879635
- **STANDARD INDUSTRIAL CLASSIFICATION:** STATE COMMERCIAL BANKS [6022]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 251666413
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13677
- **FILM NUMBER:** 251609134

**BUSINESS ADDRESS:**
- **STREET 1:** 2407 PARK DRIVE
- **CITY:** HARRISBURG
- **STATE:** PA
- **ZIP:** 17110
- **BUSINESS PHONE:** 8666427736

**MAIL ADDRESS:**
- **STREET 1:** 2407 PARK DRIVE
- **CITY:** HARRISBURG
- **STATE:** PA
- **ZIP:** 17110

?xml version='1.0' encoding='ASCII'? mpb-20251223

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, DC 20549**

**FORM 8-K**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **December 23, 2025**

**MID PENN BANCORP, INC.**

***(Exact Name of Registrant as Specified in its Charter)***

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| | | |
|:---|:---|:---|
| **Pennsylvania** | **1-13677** | **25-1666413** |
| ***(State or Other Jurisdiction of***<br>***Incorporation or Organization)*** | ***(Commission File Number)*** | ***(I.R.S. Employer***<br>***Identification Number)*** |
| **2407 Park Drive**<br>**Harrisburg, Pennsylvania** | **1.866.642.7736** | **17110** |
| ***(Address of Principal Executive Offices)*** | ***(Registrant's telephone number, including area code)*** | ***(Zip Code)*** |
|  | **Not Applicable** |  |
| ***(Former Name or Former Address, if Changed Since Last Report)*** | ***(Former Name or Former Address, if Changed Since Last Report)*** | ***(Former Name or Former Address, if Changed Since Last Report)*** |

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

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br>**Symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, $1.00 par value per share | MPB | The NASDAQ Stock Market LLC |

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Check the appropriate box below if the Form 8-K filing 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))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company □

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. □

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MID PENN BANCORP, INC.

CURRENT REPORT ON FORM 8-K

**ITEM 4.01 &nbsp;&nbsp;&nbsp;&nbsp;Change in Registrant's Certifying Accountant**

(a) On December 23, 2025, Mid Penn Bancorp, Inc. (the "Company") dismissed RSM US LLP ("RSM") as its independent registered public accounting firm, to be effective upon the completion of the audit for the fiscal year ending December 31, 2025. The dismissal of RSM was approved by the Audit Committee of the Board of Directors of the Company. The audit reports of RSM on the consolidated financial statements of the Company as of and for the fiscal years ended December 31, 2024 and December 31, 2023 contained no adverse opinion or disclaimer of opinion and were not qualified or modified as to audit scope or accounting principle.

During the Company's fiscal years ended December 31, 2023 and December 31, 2024, and the subsequent interim period through December 23, 2025, there were no: (i) disagreements with RSM on any matter of accounting principles or practices, financial statement disclosure, or auditing scope or procedure, which disagreements if not resolved to the satisfaction of RSM would have caused RSM to make reference thereto in its reports on the financial statements of the Company for such years, or (ii) reportable events, as described under Item 304(a)(1)(v) of Regulation S-K, other than a material weakness in the Company's internal control over financial reporting disclosed by the Company in its Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which material weakness was subsequently remediated by the Company.

The Company provided RSM with a copy of the disclosure it is making in this Current Report on Form 8-K and requested from RSM a letter addressed to the Securities and Exchange Commission indicating whether it agrees with such disclosures. A copy of RSM's letter dated December 29, 2025 is attached hereto as Exhibit 16.1.

(b) Following a competitive process, on December 23, 2025, the Company engaged Deloitte & Touche LLP ("Deloitte") as the Company's new independent registered public accounting firm for the fiscal year ending December 31, 2026, and related interim periods, subject to Deloitte's customary client acceptance procedure. The engagement of Deloitte was approved by the Audit Committee of the Board of Directors of the Company.

During the Company's fiscal years ended December 31, 2024 and 2023, and the subsequent interim period through December 23, 2025, neither the Company nor anyone on its behalf consulted with Deloitte with respect to either (i) the application of accounting principles to a specific completed or proposed transaction, or the type of audit opinion that might be rendered regarding the Company's consolidated financial statements, and Deloitte neither provided a written report to the Company nor provided oral advice to the Company that Deloitte concluded was an important factor considered by the Company in reaching a decision as to any accounting, auditing or financial reporting issue; or (ii) any matter that was either the subject of any disagreement or reportable event, as set forth in Item 304(a)(1)(iv) and Item 304(a)(1)(v) of Regulation S-K, respectively.

**<u>ITEM 9.01</u>&nbsp;&nbsp;&nbsp;&nbsp;<u>Financial Statements and Exhibits</u>**

(d)Exhibits.

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| | |
|:---|:---|
| 16.1 | <u>[Letter of RSM US LLP to the Securities and Exchange Commission](midpenbancorp_2025xtermi.htm)</u> |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| | | **MID PENN BANCORP, INC.**<br>(Registrant) |
| Date: December 29, 2025 | By: | /s/ Rory G. Ritrievi |
|  |  | Rory G. Ritrievi |
|  |  | President and Chief Executive Officer |

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## Exhibit 16.1

![](midpenbancorp_2025xtermi001.jpg)

4 Times Square 151 W 42nd Street, 19th Floor New York, NY 10036 T +1 212 372 1000 F +1 212 372 1001 www.rsmus.com December 29, 2025 Securities and Exchange Commission Washington, D.C. 20549 Commissioners: We have read Mid Penn Bancorp, Inc.'s statements included under Item 4.01(a) of its Form 8-K filed on December 29, 2025, and we agree with such statements concerning our firm.

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