LAMR: Other company developments

Item 8.01 Other Events. On May 14, 2026, Lamar Advertising Company (the “Company”) issued a press release announcing that its Board of Directors declared a quarterly cash dividend of $1.60 per share payable on June 30, 2026 to holders of record of the Company’s Class A common stock and Class B common stock on June 16, 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 May 14, 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: May 14, 2026 LAMAR ADVERTISING COMPANY By: /s/ Jay L. Johnson Jay L. Johnson EVP, Chief Financial Officer & Treasurer