T-Mobile’s Sievert Retiring

Mike Sievert has notified the board of directors of T-Mobile US, that he will resign from the board and its Transaction Committee, effective November 1, 2026.

Sievert will also cease to serve as Vice Chair of the board and the company on the same date.

According to the company's statement, his resignation is not the result of any disagreement with the company on any matter relating to its operations, policies, or practices.

However, it's a rather quick exit...