AMERICAN TOWER CORP /MA/

We are one of the largest global real estate investment trusts and a leading independent owner, operator and developer of multitenant communications real estate. Our primary business is the leasing of space on communications sites to wireless service providers, radio and television broadcast companies, wireless data providers, government agencies and municipalities and tenants in a number of other industries. We refer to this business, inclusive of our data center business discussed below, as our property operations, which accounted for 97% of our total revenues for the year ended December 31, 2025. We also offer tower-related services in the United States, which we refer to as our services operations. These services include site application, zoning and permitting, structural and mount analyses, and construction management services, together with program management offerings that support customer deployment needs from project scoping through construction. Our services operations primarily support our site leasing business, including the addition of new tenants and equipment on our sites. Our customers include our tenants, licensees and other payers. Since inception, we have grown our communications real estate portfolio through acquisitions, long-term lease arrangements and site development. Our portfolio primarily consists of towers that we own and towers that we operate pursuant to long-term lease arrangements, as well as distributed antenna system ( DAS ) networks, which provide seamless coverage solutions in certain in-building and outdoor wireless environments.