LAMR: Other company developments

Item 8.01 Other Events. On September 1, 2026, Lamar Advertising Company (the “Company”) issued a press release announcing that its Board of Directors declared a quarterly cash dividend of $1.65 per share payable on September 30, 2026 to holders of record of the Company’s Class A common stock and Class B common stock on September 21, 2026. A copy of the press release is filed herewith as Exhibit 99.1. Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description 99.1 Press Release of Lamar Advertising Company dated September 1, 2026. 104.1 Cover Page Interactive Data File - (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. Date: September 1, 2026 LAMAR ADVERTISING COMPANY By: /s/ Jay L. Johnson Jay L. Johnson EVP, Chief Financial Officer & Treasurer