Category: Private Citizen — Corporate Director Role: Director, T-Mobile US Inc. (TMUS); Transaction Committee Chair Board Tenure: 2013 – present Committee Memberships: CEO Selection Committee; Executive Committee; Transaction Committee (Chair) Profile Type: Board Member Accountability — Anchor B (Documented Organizational Leadership)

Basis for Inclusion: Thorsten Langheim holds a documented governance role as Transaction Committee Chair at T-Mobile US. The Transaction Committee oversees major corporate transactions, spectrum management, and M&A activity — the governance committee most directly responsible for managing T-Mobile’s relationships with the FCC, DOJ, and other government regulators who approve or block telecommunications transactions. Langheim’s DT board role overseeing the U.S. business makes him one of the most strategically important Deutsche Telekom representatives in T-Mobile’s governance. This profile documents the factual governance relationship, not the subject’s personal political views.

Subject Classification: Private Citizen / Corporate Director. Board membership is a matter of public record (SEC filings, proxy statements). This profile documents only the governance role and its connection to documented corporate governance and political activity.

Biographical Overview

Thorsten Langheim is a member of Deutsche Telekom’s Group Board of Management (Vorstand), responsible for USA & Group Development — a role that includes direct oversight of T-Mobile US, Deutsche Telekom’s most valuable asset, as well as M&A activity and DT Capital Partners. He oversees the entire U.S. business from the DT board level, making his T-Mobile governance role operationally distinct from those of other DT-designated directors.

Langheim has been on the T-Mobile board since 2013 and chairs the Transaction Committee, through which he exercises board-level oversight over the company’s spectrum acquisitions, divestitures, and major business combination activity — all of which require FCC and often DOJ regulatory approval.

Board Role and Governance Authority

• Company: T-Mobile US Inc. (NASDAQ: TMUS)
• Board tenure: 2013 – present
• Committee assignments: CEO Selection Committee; Executive Committee; Transaction Committee (Chair)
• Day job: Deutsche Telekom AG Board of Management (USA & Group Development)

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Investigative trail pointers (public records)

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Sources

• T-Mobile US Inc. DEF 14A Proxy Statement, filed April 18, 2025; SEC EDGAR (CIK 1283699)