Telephone and Data Systems TDS Number of towers

Telephone and Data Systems, Inc. (TDS) is a diversified telecommunications company providing high-quality communications services. TDS provides broadband, video, voice and wireless services to 1.1 million connections at December 31, 2025 through its wholly-owned subsidiary, TDS Telecommunications LLC (TDS Telecom). Array Digital Infrastructure, Inc. (Array), a 82.0%-owned subsidiary of TDS, leases tower space to tenants and provides ancillary services, holds noncontrolling interests in primarily wireless operating companies and holds certain wireless spectrum licenses. As of December 31, 2025, Array owns 4,450 towers in 19 states. Through July 31, 2025, Array provided wireless communication services; these operations and certain wireless spectrum licenses were disposed of on August 1, 2025. On August 1, 2025, United States Cellular Corporation changed its name to Array. Array is used throughout this report even when referring to historical periods. The Notes to Consolidated Financial Statements are presented for continuing operations, except for Note 2 — Discontinued Operations.