Array Digital Infrastructure Inc's Business Segments

Array Digital Infrastructure, Inc. (Array), formerly United States Cellular Corporation, is an owner and operator of shared wireless communications infrastructure in the United States. As of December 31, 2025, the company owns 4,450 towers across 19 states and leases tower space primarily to wireless carriers including T-Mobile, AT&T, and Verizon. Array generates revenue by leasing space on its towers for network equipment installation under long-term Master License Agreements with defined lease terms and escalators. The towers are located mostly on leased land, with some on deeded land or perpetual easements, and include monopole, self-support, and guyed tower types. The company maintains a lower tenancy rate than competitors, allowing capacity for additional tenants, and focuses on increasing colocation revenue, optimizing ground leases, and managing towers without tenants. On August 1, 2025, Array sold its wireless operations and select spectrum assets to T-Mobile US, Inc. for approximately $4.3 billion. Array is an 82.0%-owned subsidiary of Telephone and Data Systems, Inc. (TDS) and supports the deployment of 5G and other wireless technologies.

As of December 31, 2025, Array's wireless operations and select spectrum assets sold to T-Mobile were classified as discontinued operations. The previously reported Wireless and Towers segments no longer qualify as reportable segments, resulting in Array being a single reportable segment. Array primarily generates revenue by leasing tower space on its owned towers to customers. The chief operating decision maker is the TDS President and Chief Executive Officer. Array uses net income attributable to Array shareholders as the profit or loss measure for the single operating segment, with segment assets reported as total assets in the consolidated balance sheet.