UNITED STATES CELLULAR CORP

Other Information

Executive Severance Policy

On October 29, 2024, UScellular adopted a cash severance policy applicable to its executive officers (the “Executive Severance Policy”) that makes them eligible to receive severance pay in the event that their employment is terminated as a result of an “involuntary separation without cause.” In that event, subject to their execution and non-revocation of a release of claims in favor of UScellular and its parent and affiliates, they will be entitled to receive severance pay in a lump sum cash payment equal to one year of base pay at the time of separation. The Executive Severance Policy also provides UScellular with the discretion to provide the executive officers with additional benefits (e.g., prorated annual bonuses). The current executive officers subject to this policy are Douglas Chambers, Kevin Lowell and Michael Irizarry. Laurent Therivel’s compensation agreement, which addresses severance and has been previously disclosed, overrides the Executive Severance Policy in the event an involuntary termination of his employment.

For purposes of the Executive Severance Policy, an “involuntary separation without cause” is defined as the elimination of the executive officer’s position due to a strategic organizational change, such as a reduction in force, outsourcing or other restructuring where such executive officer has not been offered a position that is similar and/or comparably compensated with UScellular or with a new functional owner (whether or not such owner is affiliated with UScellular). If the executive officer accepts a similar position with the parent or an affiliate of UScellular that remains part of the same controlled group as Telephone and Data Systems, Inc., the executive officer will be eligible for severance under and subject to the terms of the Executive Severance Policy if their employment is involuntarily terminated within one year following the change of employer.

The Executive Severance Policy can be modified, altered or terminated at the Chairman’s discretion at any time for any reason.

The foregoing summary is qualified in its entirety by reference to the Executive Severance Policy, attached hereto as Exhibit 10.1 and incorporated herein by reference.

Rule 10b5-1 Trading Arrangements

During the three months ended September 30, 2024, none of UScellular’s directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) hasadopted orterminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5–1 trading arrangement (each as defined in Item 408 of Regulation S-K under the 1934 Act).