Other Events. On October 30, 2026, Peoples announced that it completed its acquisition of Citizens as of the close of business on October 30, 2026. Peoples and Citizens first announced that they had entered into an agreement to merge on April 21, 2026. A copy of the press release announcing the event is being furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the…

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Other Events Declaration of Dividend: On October 19, 2026, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.42 per common share on October 19, 2026. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K.

Results of Operation and Financial Condition. On October 19, 2026, Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the third quarter of 2026. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form…

Entry Into Material Definitive Agreement On September 29, 2026, Peoples Bancorp, Inc. (“Peoples”), the parent company of Peoples Bank (“Peoples Bank”), and Capital Bancorp, Inc. (“Capital”), the parent company of Capital Bank, N.A. (“Capital Bank”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, Capital will merge with and into Peoples (the “Merger”), with Peoples contin…

Regulation FD Disclosure On September 30, 2026, Peoples and Capital issue a joint press release that included an announcement of the Merger Agreement. A copy of the press release is attached as Exhibit 99.1. Additionally, the investor presentation attached as Exhibit 99.2 incudes information regarding the Merger. The executive officers of Peoples intend to use the investor presentation in one or more meetings with investors and analysts. Peoples does not intend for Item 7.01, Exhibit 99.1 or…

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Results of Operation and Financial Condition. On July 21, 2026, Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the second quarter of 2026. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form 8…

Other Events Declaration of Dividend: On July 21, 2026, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.42 per common share on July 20, 2026. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K.

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Entry Into Material Definitive Agreement On April 20, 2026, Peoples Bancorp Inc., an Ohio corporation (“Peoples”), and Citizens National Corporation, a Kentucky corporation (“Citizens”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) pursuant to which Peoples will acquire Citizens in a cash and stock transaction. Pursuant to the Merger Agreement, Citizens will merge with and into Peoples (the “Merger”), with Peoples as the surviving corporation in the Merger. Immediatel…

Results of Operation and Financial Condition. On April 21, 2026, Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the first quarter of 2026. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form 8…

Other Events Declaration of Dividend: On April 21, 2026, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.42 per common share on April 20, 2026. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K. Merger Agreement On April 21, 2026, Peoples Bancorp Inc. (“Peoples”) announced that it has entered into an Agreement and Plan of Merger dated April 20, 2026 (“Merger Agreement”) with Citizens National Corp…

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Other Events Declaration of Dividend: On January 20, 2026, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.41 per common share on January 19, 2026. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K. Officer Election: On January 16, 2026, Peoples Bancorp Inc. (“Peoples”) issued a news release announcing that the Boards of Directors of Peoples and its banking subsidiary, Peoples Bank, elected Ron J.…

Results of Operation and Financial Condition. On January 20, 2026, Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the fourth quarter of 2025. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on For…

Executive Vice President, Chief Commercial Banking Officer — Douglas V. Wyatt: Douglas V. Wyatt intends to retire from his position as Executive Vice President, Chief Commercial Banking Officer.

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Results of Operation and Financial Condition. On October 21, 2025 Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the third quarter of 2025. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form…

Other Events On October 21, 2025, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.41 per common share on October 20, 2025. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K.

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Other Events On July 22, 2025, Peoples issued a news release announcing that the Board of Directors declared a quarterly dividend of $0.41 per common share on July 21, 2025. A copy of the news release is included as Exhibit 99.3 to this Current Report on Form 8-K.

Results of Operation and Financial Condition. On July 22, 2025 Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the second quarter of 2025. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form 8-…

and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference in any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing. During the conference call, management referred to non-Generally Acce…

Results of Operation and Financial Condition. On April 22, 2025 Peoples Bancorp Inc. ("Peoples") issued a news release regarding its financial results for the first quarter of 2025. A copy of the news release is attached as Exhibit 99.1 to this Current Report on Form 8-K. Peoples also provided electronic presentation slides that will be used in connection with its conference call to discuss earnings. A copy of the electronic slides is attached as Exhibit 99.2 to this Current Report on Form 8-…