AI English summary of an SEC filing — figures as filed

G. Michael Sievert notified T-Mobile US's Board of Directors on October 26, 2026 of his decision to resign from the Board and its Transaction Committee, the company said, with the resignation effective on November 1, 2026.

8-KDeparture or Appointment of Directors or Certain OfficersFiled Oct 28, 2026Period of report Oct 26, 2026Summary published (UTC) Oct 28, 2026

Key points

AI summary

G. Michael Sievert notified T-Mobile US's Board of Directors on October 26, 2026 of his decision to resign from the Board and its Transaction Committee, the company said, with the resignation effective on November 1, 2026.
The company said Sievert's resignation effective date coincides with the expiration of the Amendment, dated September 19, 2025, to the Amended and Restated Employment Agreement, dated March 9, 2023.
The company said Sievert will also step down as Vice Chair of the Board and the company, effective November 1, 2026.
The company said Sievert's resignation is not the result of any disagreement with the company on any matter relating to its operations, policies or practices.

Summary

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Analysis scope · Filing bodyWe analyzed the filing body and confirmed exhibits. This is not a review of other exhibits, investor presentations or the full earnings call.

G. Michael Sievert Notifies Board of Resignation

G. Michael Sievert notified T-Mobile US's Board of Directors on October 26, 2026 of his decision to resign from the Board and its Transaction Committee, the company said, with the resignation effective on November 1, 2026.

Source · Based on the filing body and exhibits

Resignation Effective Date Coincides With Employment Agreement Amendment Expiration

The company said Sievert's resignation effective date coincides with the expiration of the Amendment, dated September 19, 2025, to the Amended and Restated Employment Agreement, dated March 9, 2023.

Source · Based on the filing body and exhibits

Vice Chair Role Ends

The company said Sievert will also step down as Vice Chair of the Board and the company, effective November 1, 2026.

Source · Based on the filing body and exhibits

Resignation Reason: No Disagreement on Operations or Policies

The company said Sievert's resignation is not the result of any disagreement with the company on any matter relating to its operations, policies or practices.

Source · Based on the filing body and exhibits

AI summarized the filing and translated the summary into English; it may differ from the original. For reference only, not investment advice. AI translated the published Korean report into English. Figures are copied as filed, not recalculated.

Original filing

The filing as submitted to SEC EDGAR. You can check the figures and statements of this summary against it.

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