8-K

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):  January 5, 2026

MID PENN BANCORP, INC.

(Exact Name of Registrant as Specified in its Charter)

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

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:

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 o

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. o

MID PENN BANCORP, INC.

FORM 8-K

ITEM 5.02    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

Appointment of Chief Operating Officer

On January 8, 2026, Mid Penn Bank, the wholly-owned bank subsidiary of Mid Penn Bancorp, Inc. (the “Company”), announced the appointment of Mr. Dana R. Stewart to the position of First Executive Vice President and Chief Operating Officer, effective January 5, 2026. Mr. Stewart, age 57, has over 35 years of experience in the financial services industry. Mr. Stewart most recently held the position of Senior Vice President and Director of the Project Management Office for First National Bank (Pittsburgh, Pennsylvania) from 2015 to 2025. Prior to his time with First National Bank, Mr. Stewart served as Managing Director for BNYMellon (Pittsburgh, Pennsylvania) from 2007 to 2014. Mr. Stewart is a graduate of Grove City College where he received a Bachelor of Arts in Business Administration/Financial Planning, and Robert Morris University, where he received a Master of Business Administration.

In connection with his appointment, Mr. Stewart will receive an annual base salary of $310,000 and a change in control agreement with a severance benefit equal to 2.25 times his annual base salary as then in effect, and be eligible to participate in Mid Penn Bank's incentive, retirement and benefit plans as made available to similarly situated employees.

There are no family relationships between Mr. Stewart and any director, executive officer or any person nominated or chosen by the Company to become a director or executive officer. No information is required to be disclosed with respect to Mr. Stewart pursuant to Item 404(a) of Regulation S-K.

A copy of the press release announcing Mr. Stewart’s appointment is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

In connection with Mr. Stewart’s appointment, Jordan D. Space, who served as Chief Operating Officer from January 12, 2024 through January 5, 2026, will continue to serve as President of the Private Bank and be responsible for managing MPB Financial Services, LLC and its two nonbank subsidiaries – MPB Risk Services, LLC and Cumberland Advisors, LLC.

ITEM 9.01    Financial Statements and Exhibits

(d)Exhibits.

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.

cooappointment-final

NEWS RELEASE Mid Penn Contact: Jennifer Trautlein 717-914-6577 jen.trautlein@midpennbank.com FOR IMMEDIATE RELEASE MID PENN BANK HIRES DANA STEWART AS CHIEF OPERATING OFFICER Millersburg, Pa. – January 8, 2026. Mid Penn Bank (the “Bank”), a wholly-owned subsidiary of Mid Penn Bancorp, Inc. (“Mid Penn”) (NASDAQ: MPB), announces the appointment of Dana Stewart as first executive vice president and chief operating officer, effective January 5, 2026. In this role, he will lead the Bank’s loan and deposit operations groups and will report to President and CEO Rory Ritrievi. Stewart brings more than 35 years of experience in the financial services industry. Most recently, he served as senior vice president and director of the project management office at First National Bank in Pittsburgh, PA, where he was an accomplished transformation and project delivery leader with extensive operations expertise. He is also deeply experienced in delivering on corporate strategic initiatives, M&A integrations, regulatory exam coordination, and enterprise-wide project governance and vendor management. Prior to his time with First National Bank, Stewart served as managing director for BNYMellon, leading the program development and implementation of multiple transformation initiatives that optimized IT costs, improved quality of services, standardized processes and reporting, and maximized productivity. “We are thrilled to welcome Dana to Mid Penn Bank as our new chief operating officer,” Ritrievi said. “He is an outstanding leader with a proven track record of driving operational excellence and enhancing efficiency in large banks. He will be a tremendous asset as we focus on disciplined growth while maintaining our exceptional customer service.” Stewart is a graduate of Grove City College, where he received a Bachelor of Arts in Business Administration/Financial Planning, and Robert Morris University, where he received a Master of Business Administration. He is a lifelong resident of Pittsburgh and is active in his community, serving as a board member of FAME—the Fund for Advancement of Minorities through Education and a member of the Tocqueville Society of United Way of Southwestern PA. ###

About Mid Penn Bank Mid Penn Bank, headquartered in Millersburg, Pennsylvania, has been serving the community since 1868. The Bank operates 59 retail locations throughout Pennsylvania and central and southern New Jersey, and has total assets of over $6 billion. Mid Penn offers a comprehensive portfolio of financial products and services to meet the banking needs of the communities it serves. To learn more, please visit www.midpennbank.com.