X0609 4 2026-05-17 0 0001051512 TELEPHONE & DATA SYSTEMS INC /DE/ TDS 0000901731 CARLSON LEROY T JR false 30 N. LASALLE STREET, SUITE 4000 CHICAGO IL 60602 1 1 0 0 Vice Chair 0 Common Shares 2026-05-17 4 M 0 713344 40.50 A 1078701 D Common Shares 2026-05-17 4 F 0 306558 40.50 D 772143 D Common Shares 2026-05-17 4 M 0 163146 40.50 A 935289 D Common Shares 2026-05-17 4 F 0 66483 40.50 D 868806 D Common Shares 37543 I By Wife Common Shares 312242 I By trust Common Shares 40978.32 I By Wife's Trust Common 78943 I By Trust Common Shares 211758 I By Trust Common Shares 1813229 I By Voting Trust Restricted Stock Units 2026-05-17 4 M 0 163146 40.50 D Common Shares 163146 0 D Performance Share Units 2026-05-17 4 M 0 713344 40.50 D Common Shares 713344 0 D On May 17, 2023, the reporting person was granted financial-based performance share units that would be measured over a three year time period. The performance share units have been accumulating quarterly dividend equivalents. The Compensation Human Resources Committee certified the third and final metric on February 25, 2026 and performance shares became adjusted for performance and time based. Each performance share unit represents the contingent right to receive one common share. The market was closed on vest date therefore the previous trading day's close, May 15, 2026, was used to value the transaction. Shares withheld to pay taxes on restricted stock units that vested on May 17, 2026. Restricted stock units were awarded on May 17, 2023, pursuant to the 2022 Long Term Incentive Plan. One-third of the restricted stock units will vest on the first, second and third annual anniversaries of the Grant Date. This transaction represents settlement of the third and final vesting. Each restricted stock unit represents the contingent right to receive one common share. Includes 312,242 Common Shares held through dividend reinvestment. Reporting person is a member of a voting trust which is record owner of these Common Shares and which files its holdings on a form 4. The shares reported are held by respective reporting person and his family members that have a pecuniary interest in such securities. Includes 693,751 Common Shares held by a family partnership of which reporting person is a general partner, of which 23,754 has been accumulated in dividend reinvestment. Reporting person also holds 30,538 Common Shares in the dividend reinvestment plan. John M. Toomey, by power of atty. 2026-05-19