INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE The Securities and Exchange Commission allows Mid Penn and William Penn to “incorporate by reference” information into this document, which means that we can disclose important information to you by referring you to other information that has been filed with the Securities and Exchange Commission. The information incorporated by reference is considered to be part of this document, except for any information superseded by information contained in subsequent incorporated filings or by information in this document. This document incorporates by reference the Mid Penn and William Penn documents set forth below that Mid Penn and William Penn previously filed with the Securities and Exchange Commission. Mid Penn and William Penn’s SEC filings are available to the public over the Internet at the SEC’s website at www.sec.gov. These documents contain important information about Mid Penn and William Penn. You should read this document together with the information incorporated by reference. Documents filed by Mid Penn (SEC File No. 001-13677): • Mid Penn Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed on March 28, 2024; • Mid Penn Quarterly Report on Form 10-Q for the quarters ended March 31, 2024, filed on May 8, 2024, June 30, 2024, filed on August 7, 2024 and September 30, 2024, filed on November 7, 2024; • Mid Penn Current Reports on Form 8-K filed on January 5, 2024, January 8, 2024, January 12, 2024, January 26, 2024, January 26, 2024, February 23, 2024, April 24, 2024, May 14, 2024, May 15, 2024, July 24, 2024, July 30, 2024, September 18, 2024, October 23, 2024, November 1, 2024; November 1, 2024, November 4, 2024, November 5, 2024, December 11, 2024, January 22, 2025, January 24, 2025; and • The description of our common stock, which is registered under Section 12 of the Exchange Act, included in Exhibit 4.1 to our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed on March 28, 2024. Documents filed by William Penn (SEC File No. 001-40255): • William Penn Annual Report on Form 10-K for the fiscal year ended June 30, 2024, filed on September 5, 2024; • William Penn Quarterly Report on Form 10-Q for the quarters ended September 30, 2024, and December 31, 2024, filed on November 4, 2024 and February 6, 2025; • William Penn Current Reports on Form 8-K filed on November 1, 2024, November 20, 2024, December 11, 2024, January 15, 2025; and • The description of William Penn’s common stock set forth in William Penn’s registration statement on Form 8-A filed with the SEC on March 19, 2021 pursuant to the Exchange Act, including any amendment or reports filed under the Exchange Act for the purpose of updating such description. Mid Penn and William Penn are also incorporating by reference additional documents that they file with the Securities and Exchange Commission pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this document and prior to the date of the special meeting of Mid Penn and William Penn shareholders. Any statement contained in a document that is incorporated by reference will be deemed to be modified or superseded for all purposes to the extent that a statement contained in this document (or in any other document that is subsequently filed with the SEC and incorporated by reference) modifies or is contrary to that previous statement. Notwithstanding the foregoing, any document or portion of a document that is “furnished” to, but not “filed” with, the SEC is not incorporated by reference into this document. 130
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