Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2025 PEOPLES BANCORP INC. (Exact name of Registrant as specified in its charter) Ohio 000-16772 31-0987416 (State or other jurisdiction (Commission File (I.R.S. Employer of incorporation) Number) Identification Number) 138 Putnam Street, PO Box 738 Marietta, Ohio 45750-0738 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (740) 373-3155 Not applicable (Former name or former address, if changed since last report) 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: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common shares, without par value PEBO The Nasdaq Stock Market 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 ☐ 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. ☐ Item 7.01    Regulation FD Disclosure From time-to-time between November 3, 2025 and December 31, 2025, the management team of Peoples Bancorp Inc. ("Peoples"), including the President and Chief Executive Officer, and the Executive Vice President, Chief Financial Officer and Treasurer, intends to conduct one or more meetings with investors and analysts. These individuals intend to use an investor presentation containing financial data and other information regarding Peoples to assist the investors and analysts with their understanding of the business and financial performance of Peoples. A copy of the investor presentation is included as Exhibit 99 to this Current Report on Form 8-K and is incorporated herein by reference. The information in this Current Report on Form 8-K is being furnished under Item 7.01 and shall not be deemed "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange Act"), or otherwise subject to the liabilities of such section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Item 9.01      Financial Statements and Exhibits a) - c) Not applicable d) Exhibits See Index to Exhibits below. INDEX TO EXHIBITS Exhibit Number Description 99 3rd Quarter 2025 Investor Presentation 104 Cover Page Interactive Data File (the cover page XBRL tags are embedded within the Inline XBRL document) 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. PEOPLES BANCORP INC. Date: November 3, 2025 By:/s/ KATIE BAILEY Katie Bailey Executive Vice President, Chief Financial Officer and Treasurer