Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2026

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Nature of Operations

Mid Penn Bancorp, Inc. ("Mid Penn" or the "Corporation"), through operations conducted by Mid Penn Bank (the "Bank") and its nonbank subsidiaries, engages in a full-service commercial banking and trust business, making available to the community a wide range of financial services, including, but not limited to, mortgage and home equity loans, secured and unsecured commercial and consumer loans, lines of credit, construction financing, farm loans, community development loans, loans to non-profit entities and local government loans, and various types of time and demand deposits including but not limited to, checking accounts, savings accounts, clubs, money market deposit accounts, certificates of deposit, and Individual Retirement Accounts ("IRA"). In addition, the Bank provides a full range of trust and wealth management services through its Trust Department. Deposits are insured by the Federal Deposit Insurance Corporation ("FDIC") to the extent provided by law.

Mid Penn also fulfills the insurance needs of both existing and potential customers through MPB Risk Services, LLC, doing business as MPB Insurance and Risk Management.

The financial services are provided to individuals, partnerships, non-profit organizations, and corporations through its retail banking offices located throughout Pennsylvania, with a minor portion in New Jersey.

Basis of Presentation

For all periods presented, the accompanying Consolidated Financial Statements include the accounts of Mid Penn Bancorp, Inc., its wholly-owned subsidiary, Mid Penn Bank, and five wholly-owned nonbank subsidiaries, MPB Realty, LLC, MPB Financial Services, LLC, which includes Cumberland Advisors, LLC and MPB Risk Services, LLC, and MPB Launchpad Fund I, LLC. As of March 31, 2026, the accounts and activities of these nonbank subsidiaries were not material to warrant separate disclosure or segment reporting. As a result, Mid Penn has only one reportable segment for financial reporting purposes. All intercompany accounts and transactions have been eliminated in consolidation.

Certain information and disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. Mid Penn believes the information presented is not misleading, and the disclosures are adequate. In the opinion of management, all adjustments necessary for fair presentation of the periods presented have been reflected in the accompanying consolidated financial statements. All such adjustments are of a normal, recurring nature. These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the 2025 Annual Report.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates.

Material estimates subject to significant change include the allowance for credit losses, expected cash flows on acquired loans, business combination fair value computations, and the valuation of goodwill and other intangible assets.

Recent Accounting Pronouncements

Accounting Standards Adopted in 2026

ASU 2025-08 - The FASB issued ASU 2025-08, Financial Instruments - Credit Losses (Topic 326): Purchased Loans

The amendments in this ASU apply to all entities subject to the guidance in Topic 326, including public business entities, private companies, and not-for-profit entities. The amendments in this ASU are effective for all entities for annual reporting periods beginning after December 15, 2026, and interim reporting periods within those annual reporting periods. The amendments in this ASU should be applied prospectively to loans that are acquired on or after the initial application date. Early adoption is permitted in an interim or annual reporting period in which financial statements have not yet been issued or made available for issuance.

Effective January 1, 2026, the Corporation adopted ASU 2025-08. Adoption resulted in the recognition of an initial allowance for credit losses on applicable purchased loans, including purchased seasoned loans ("PSL loans"), and will affect the accounting for future loan acquisitions. The impact of adoption is reflected in the ACL rollforward in "Note 4 - Loans and Allowance for Credit Losses". The adoption did not result in a cumulative-effect adjustment to beginning retained earnings.

Accounting Standards Pending Adoption

ASU 2024-03: The FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses

The amendments in the ASU improve financial reporting by requiring that public business entities disclose additional information about specific expense categories in the notes to financial statements at interim and annual reporting periods. The amendments are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. ASU 2024-03 is not expected to have a significant impact on the Corporation's financial statements.

ASU 2025-01 - The FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date

The amendments in the ASU clarify the effective date of ASU 2024-03 which requires public business entities to disclose additional information about specific expense categories in the notes to financial statements at interim and annual reporting periods. The amendments in the ASU are effective for the first annual reporting period beginning after December 15, 2026, and interim reporting periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. ASU 2025-01 is not expected to have a significant impact on the Corporation's financial statements.

ASU 2025-09 - The FASB issued ASU 2025-09, Derivatives and Hedging (Topic 815): Hedge Accounting Improvements

The amendments in this ASU refine hedge accounting guidance to better align accounting with risk management strategies. The amendments are effective for fiscal years beginning after December 15, 2026, including interim periods therein. Early adoption is permitted. ASU 2025-09 is not expected to have a significant impact on the Corporation's financial statements.

Management does not expect the adoption of any other recently issued accounting standards to have a material impact on the Corporation's consolidated financial statements.