On August 8, 2023, Laurent C. Therivel, the Chief Executive Officer (the CEO) of United States Cellular Corporation (UScellular), resigned from the board of directors of Telephone and Data Systems, Inc. (TDS), effective as of the end of the day on August 8. Mr. Therivel?s resignation will permit him to focus on the UScellular business and on the recently-announced strategic review process, while also simplifying his reporting and other obligations during such process. Mr. Therivel agrees with and supports the decision by the TDS and UScellular boards of directors to review strategic alternatives for UScellular. His resignation is not a result of any disagreement or conflict with the Board or TDS management.

The Board greatly appreciates the outstanding job that Mr. Therivel has done and is doing as the CEO of UScellular. The Board thanks him for his excellent service as a director of TDS and acknowledges that his resignation as a director is attributable to the considerations described in the second sentence of this paragraph. On August 9, 2023, Vicki L. Villacrez, Executive Vice President and Chief Financial Officer of TDS, was appointed as a director of TDS to fill the vacancy created by Mr. Therivel?s resignation.

There are no arrangements or understandings between Ms. Villacrez and any other person pursuant to which she was selected as a director.