MID PENN BANCORP INC 8-K

What Happened

• MID PENN BANCORP, INC. (MPB) filed an 8-K on December 29, 2025 announcing it dismissed RSM US LLP as its independent registered public accounting firm, effective upon completion of the audit for the fiscal year ending December 31, 2025. The dismissal was approved by the Audit Committee.
• Following a competitive process, MPB engaged Deloitte & Touche LLP on December 23, 2025 to serve as its independent auditor for the fiscal year ending December 31, 2026 and related interim periods, subject to Deloitte’s client acceptance procedures. RSM provided a letter dated December 29, 2025 (attached as Exhibit 16.1) responding to the disclosure.

Key Details

• RSM’s audit reports for the consolidated financial statements for the years ended Dec 31, 2024 and Dec 31, 2023 were unmodified (no adverse opinion or disclaimer).
• During 2023, 2024 and through Dec 23, 2025 there were no disagreements with RSM on accounting, disclosure, or audit scope, and no reportable events except a previously disclosed material weakness in internal control for 2023 that MPB says was subsequently remediated.
• Deloitte had not been consulted by MPB on accounting or auditing matters during 2023–2025 and reported no disagreements or reportable events.

Why It Matters

• A change in independent auditor is material because auditors provide assurance on financial statements; investors watch for reasons behind a switch and any related audit findings.
• In this case, prior RSM audits were clean and the only reportable issue (a 2023 material weakness) was disclosed and remediated, which softens immediate concern about financial reporting quality.
• The new engagement with Deloitte may bring different audit procedures and oversight for 2026, so investors should monitor upcoming interim and annual filings for any changes in audit opinion, disclosures, or internal control commentary.