Lamar Advertising Company
Advertising ServicesLouisiana, United States1001-5000 Employees
Lamar Advertising Company, listed on Nasdaq as LAMR, is a U.S.-based outdoor advertising company operating in the Advertising Services industry, with displays across the United States and Canada. Founded in 1902, the company offers billboard, interstate logo, transit, and airport advertising formats and maintains what it describes as the largest network of digital billboards in the United States. The company is headquartered in Baton Rouge, Louisiana, and has between 1,001 and 5,000 employees. It has expanded through asset acquisitions, including purchasing assets of Cleveland Outdoor Advertising from Cleoutdoor in February 2026, and appointed Ross Reilly as President of its Outdoor Division effective January 1, 2026. In 2026, Lamar partnered with Ronald McDonald House Charities Inc. to run a yearlong pro bono digital out-of-home media program.