AD

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 6

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,393

F2 · kind: Shares withheld to pay for taxes

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 5

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,448

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 4

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,496

F2 · kind: Shares withheld to pay for taxes

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 3

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,643

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · derivative · entry 9

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 9,686 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · derivative.exercise_date: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · derivative.expiration_date: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · derivative · entry 8

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 10,642 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · derivative.exercise_date: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · derivative.expiration_date: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 6

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,977

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 5

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,934

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · kind: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 4

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,248

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 3

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,595

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · kind: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · derivative · entry 9

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 20,374 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · derivative.exercise_date: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

F4 · derivative.expiration_date: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · derivative · entry 8

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 22,389 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · derivative.exercise_date: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

F3 · derivative.expiration_date: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 6

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,995

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 5

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,572

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · price: On April 4, 2022 reporting person was granted an award based on achievement of certain performance measures and, effective November 27, 2023, the award was adjusted by the Long-Term Incentive Compensation Committee (LTICC) to provide for a payout at no less than 75% of the target opportunity of such award. Based on company performance at December 31, 2024, the LTICC certified on February 19, 2025 that the reporting person was entitled to 91% of his target opportunity. Performance share units are now vested.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 4

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,198

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 3

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,721

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F3 · price: On April 4, 2022, these restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units vest on the third anniversary of the transaction date and are now vested.

SEC source: 0001120437-25-000066 · wk-form4_1744057333.xml · derivative · entry 7

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,190

Underlying: Common Shares · 38,190 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.exercise_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.expiration_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000066 · wk-form4_1744057333.xml · nonDerivative · entry 2

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 133,357

F2 · kind: Shares withheld to pay for taxes

SEC source: 0001120437-25-000066 · wk-form4_1744057333.xml · nonDerivative · entry 1

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,276

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · derivative · entry 7

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,577

Underlying: Common Shares · 14,577 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.exercise_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.expiration_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 2

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,224

F2 · kind: Shares withheld to pay for taxes

SEC source: 0001120437-25-000064 · wk-form4_1744057217.xml · nonDerivative · entry 1

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,682

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · derivative · entry 7

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,786

Underlying: Common Shares · 9,786 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.exercise_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.expiration_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 2

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,953

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000061 · wk-form4_1744056929.xml · nonDerivative · entry 1

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,135

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · derivative · entry 7

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,522

Underlying: Common Shares · 11,522 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.exercise_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · derivative.expiration_date: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 2

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,332

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000059 · wk-form4_1744056825.xml · nonDerivative · entry 1

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,285

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

F1 · price: On April 3, 2023, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the second vesting.

SEC source: 0001120437-25-000047 · wk-form4_1741641877.xml · derivative · entry 1

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,304

Underlying: Common Shares · 1,304 shares

Expires not disclosed

F1 · derivative.exercise_price: Reporting person deferred a portion of his bonus into United States Cellular Corporation stock pursuant to the Long Term Incentive Plan. Reporting person is 100% vested in all bonus amounts and receives an employer match that vests ratably at 33%, 33% and 34% per year over a 3 year period. A total of 978 are vested.

F1 · price: Reporting person deferred a portion of his bonus into United States Cellular Corporation stock pursuant to the Long Term Incentive Plan. Reporting person is 100% vested in all bonus amounts and receives an employer match that vests ratably at 33%, 33% and 34% per year over a 3 year period. A total of 978 are vested.

F1 · derivative.exercise_date: Reporting person deferred a portion of his bonus into United States Cellular Corporation stock pursuant to the Long Term Incentive Plan. Reporting person is 100% vested in all bonus amounts and receives an employer match that vests ratably at 33%, 33% and 34% per year over a 3 year period. A total of 978 are vested.

F1 · derivative.expiration_date: Reporting person deferred a portion of his bonus into United States Cellular Corporation stock pursuant to the Long Term Incentive Plan. Reporting person is 100% vested in all bonus amounts and receives an employer match that vests ratably at 33%, 33% and 34% per year over a 3 year period. A total of 978 are vested.

SEC source: 0001120437-25-000035 · wk-form4_1741296702.xml · derivative · entry 3

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,834

Underlying: Common Shares · 22,917 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.exercise_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.expiration_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000035 · wk-form4_1741296702.xml · nonDerivative · entry 2

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 112,086

F2 · kind: Shares withheld to pay for taxes

SEC source: 0001120437-25-000035 · wk-form4_1741296702.xml · nonDerivative · entry 1

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,239

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000033 · wk-form4_1741296504.xml · derivative · entry 3

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,730

Underlying: Common Shares · 5,865 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.exercise_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.expiration_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000033 · wk-form4_1741296504.xml · nonDerivative · entry 2

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,349

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000033 · wk-form4_1741296504.xml · nonDerivative · entry 1

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,865

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000031 · wk-form4_1741296341.xml · derivative · entry 3

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,614

Underlying: Common Shares · 9,307 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.exercise_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.expiration_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000031 · wk-form4_1741296341.xml · nonDerivative · entry 2

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,105

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000031 · wk-form4_1741296341.xml · nonDerivative · entry 1

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,220

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000028 · wk-form4_1741295949.xml · derivative · entry 3

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,812

Underlying: Common Shares · 6,906 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.exercise_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · derivative.expiration_date: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000028 · wk-form4_1741295949.xml · nonDerivative · entry 2

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,763

F2 · kind: Shares withheld to pay for taxes.

SEC source: 0001120437-25-000028 · wk-form4_1741295949.xml · nonDerivative · entry 1

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,973

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

F1 · price: On March 3, 2024, reporting person was granted Restricted Stock Units (RSUs) under the United States Cellular Corporation Long-Term Incentive Plan. RSUs vest one-third each year on the first, second and third anniversaries of the grant date. This transaction represents settlement of the first vesting.

SEC source: 0001120437-25-000045 · wk-form4_1741385958.xml · derivative · entry 2

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,450

Underlying: Common Shares · 29,450 shares

Expires not disclosed

F2 · derivative.exercise_price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.exercise_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F1 · derivative.expiration_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will vest on the first, second and third anniversaries of the grant date.

SEC source: 0001120437-25-000045 · wk-form4_1741385958.xml · derivative · entry 1

Therivel Laurent C · CIK 0001816432 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,267

Underlying: Common Shares · 39,267 shares

Expires not disclosed

F1 · derivative.exercise_price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will vest on the first, second and third anniversaries of the grant date.

F1 · price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will vest on the first, second and third anniversaries of the grant date.

F1 · derivative.exercise_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will vest on the first, second and third anniversaries of the grant date.

F1 · derivative.expiration_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will vest on the first, second and third anniversaries of the grant date.

SEC source: 0001120437-25-000040 · wk-form4_1741385370.xml · derivative · entry 2

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,496

Underlying: Common Shares · 11,496 shares

Expires not disclosed

F2 · derivative.exercise_price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.exercise_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.expiration_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

SEC source: 0001120437-25-000040 · wk-form4_1741385370.xml · derivative · entry 1

IRIZARRY MICHAEL · CIK 0001232376 · Director · EVP-CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,327

Underlying: Common Shares · 15,327 shares

Expires not disclosed

F1 · derivative.exercise_price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · derivative.exercise_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · derivative.expiration_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

SEC source: 0001120437-25-000043 · wk-form4_1741385736.xml · derivative · entry 2

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,316

Underlying: Common Shares · 7,316 shares

Expires not disclosed

F2 · derivative.exercise_price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.exercise_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.expiration_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

SEC source: 0001120437-25-000043 · wk-form4_1741385736.xml · derivative · entry 1

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,756

Underlying: Common Shares · 9,756 shares

Expires not disclosed

F1 · derivative.exercise_price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third annual anniversaries of the grant date.

F1 · price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third annual anniversaries of the grant date.

F1 · derivative.exercise_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third annual anniversaries of the grant date.

F1 · derivative.expiration_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third annual anniversaries of the grant date.

SEC source: 0001120437-25-000038 · wk-form4_1741385252.xml · derivative · entry 2

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,613

Underlying: Common Shares · 8,613 shares

Expires not disclosed

F2 · derivative.exercise_price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · price: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.exercise_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

F2 · derivative.expiration_date: On March 3, 2025, the reporting person was granted an award based on the achievement of certain performance measures, except that such award provides that in no event shall the number of shares subject to the award be less than 75% of the target opportunity as of the grant date. Accordingly, the reporting person is reporting a stock award of 75% of the target opportunity as of the grant date. To the extent that the actual amount is determined to be greater than 75% of the target opportunity based on the final determination of the performance measures, the reporting person will file a Form 4 at such time to report the additional award above 75% of the target opportunity.

SEC source: 0001120437-25-000038 · wk-form4_1741385252.xml · derivative · entry 1

Chambers Douglas W · CIK 0001739622 · Director · EVP-CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,484

Underlying: Common Shares · 11,484 shares

Expires not disclosed

F1 · derivative.exercise_price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · price: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · derivative.exercise_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

F1 · derivative.expiration_date: These restricted stock units were awarded under the United States Cellular Corporation Long-Term Incentive Plan. These restricted stock units will ratably vest on the first, second and third anniversaries of the grant date.

SEC source: 0001120437-25-000013 · wk-form4_1740176343.xml · derivative · entry 2

Lowell Kevin R · CIK 0001958412 · EVP, Chief People Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,672

Underlying: Common Shares · 25,672 shares

Expires not disclosed

F2 · derivative.exercise_price: On March 4, 2024, the reporting person was granted an award based on the achievement of certain performance measures. Based on company performance at December 31, 2024, the Long-Term Incentive Compensation Committee certified on February 19, 2025 that the reporting person was entitled to 145.9% of his target opportunity. Performance share units are now adjusted for performance and are time-based and vest on March 4, 2027.

F2 · price: On March 4, 2024, the reporting person was granted an award based on the achievement of certain performance measures. Based on company performance at December 31, 2024, the Long-Term Incentive Compensation Committee certified on February 19, 2025 that the reporting person was entitled to 145.9% of his target opportunity. Performance share units are now adjusted for performance and are time-based and vest on March 4, 2027.

F2 · derivative.exercise_date: On March 4, 2024, the reporting person was granted an award based on the achievement of certain performance measures. Based on company performance at December 31, 2024, the Long-Term Incentive Compensation Committee certified on February 19, 2025 that the reporting person was entitled to 145.9% of his target opportunity. Performance share units are now adjusted for performance and are time-based and vest on March 4, 2027.

F2 · derivative.expiration_date: On March 4, 2024, the reporting person was granted an award based on the achievement of certain performance measures. Based on company performance at December 31, 2024, the Long-Term Incentive Compensation Committee certified on February 19, 2025 that the reporting person was entitled to 145.9% of his target opportunity. Performance share units are now adjusted for performance and are time-based and vest on March 4, 2027.