Exhibit C BANK PLAN OF MERGER THIS BANK PLAN OF MERGER (“Plan of Merger”) dated as of October 31, 2024, is by and between MID PENN BANK, a Pennsylvania bank and trust company (“MP Bank”), and WILLIAM PENN BANK, a Pennsylvania stock savings bank (“William Penn Bank”). BACKGROUND 1. MP Bank is a Pennsylvania bank and trust company and a wholly-owned subsidiary of Mid Penn Bancorp, Inc., a Pennsylvania corporation (“Mid Penn”). The authorized capital stock of MP Bank consists of 10,000,000 shares of common stock, par value $1.00 per share (the “MP Capital Stock”), of which at the date hereof 150,000 shares are issued and outstanding. 2. William Penn Bank is a Pennsylvania stock savings bank and a wholly-owned subsidiary of William Penn Bancorporation (“William Penn”). The authorized capital stock of William Penn Bank consists of 4,000,000 shares of common stock, par value $1.00 per share (the “William Penn Bank Common Stock”), of which at the date hereof 100 shares are issued and outstanding, and 1,000,000 shares of serial preferred stock, of which at the date hereof no shares are issued and outstanding. 3. The respective Boards of Directors of MP Bank and William Penn Bank deem the merger of William Penn Bank with and into MP Bank, pursuant to the terms and conditions set forth or referred to herein, to be desirable and in the best interests of the respective corporations and their respective shareholders. 4. The respective Boards of Directors of MP Bank and William Penn Bank have adopted resolutions approving this Plan of Merger. The respective Boards of Directors of Mid Penn and William Penn have adopted resolutions approving an Agreement and Plan of Merger of even date herewith (the “Holding Company Merger Agreement”) between Mid Penn and William Penn, providing for the merger of William Penn with and into Mid Penn (the “Holding Company Merger”) and pursuant to which this Plan of Merger is being executed by MP Bank and William Penn Bank. 5. For U.S. federal income tax purposes, it is intended that the Bank Merger (defined below) shall qualify as a “reorganization” within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended (the “Code”), and this Plan of Merger is intended to be and is adopted as a plan of reorganization for purposes of Sections 354 and 361 of the Code. AGREEMENT In consideration of the premises and of the mutual covenants and agreements herein contained, MP Bank and William Penn Bank, intending to be legally bound hereby, agree: ARTICLE I MERGER; BUSINESS 1.1 Merger. Subject to the terms and conditions of this Plan of Merger and in accordance with the applicable laws and regulations of the Commonwealth of Pennsylvania, and the provisions of the Pennsylvania Banking Code of 1965, as amended, on the Effective Date (as that term is defined in Article V hereof), William Penn Bank shall merge with and into MP Bank; the separate existence of William Penn Bank shall cease; and MP Bank shall be the surviving bank under the name and title “Mid Penn Bank” (such transaction referred to herein
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