8-KLeadership ChangesRegulation FDExhibits & Filings

T-Mobile US, Inc. 8-K Report, Executive Changes (Jul 7, 2026)

Filed July 7, 2026For Securities:TMUSTMUSZTMUSITMUSL

Summary

T-Mobile US, Inc. has announced significant changes to its executive leadership team, aimed at bolstering its enterprise and broadband businesses, and enhancing its marketing and product development functions. The most notable appointment is Chris Sambar as the new Chief Enterprise Officer, effective by mid-October 2026. This strategic move signals a dedicated focus on expanding and optimizing T-Mobile's offerings to enterprise and government clients, a key growth area for the company. Mr. Sambar will report directly to the CEO, underscoring the importance of this division. These leadership adjustments also include a reshuffling of responsibilities for existing executives. André Almeida will shift his focus to marketing, brand, and broadband, while retaining some enterprise duties during the transition. Dr. John Saw's role as CTO will be expanded to encompass product engineering and cybersecurity. Concurrently, Michael J. Katz, after a long tenure, will depart his Chief Business and Product Officer role but will remain as a strategic advisor through year-end. These changes suggest a proactive approach to refining T-Mobile's operational structure and strategic direction.

Key Highlights

  • 1Appointment of Chris Sambar as Chief Enterprise Officer, effective no later than October 14, 2026, reporting to the CEO.
  • 2Mr. Sambar will lead T-Mobile's enterprise and government businesses.
  • 3André Almeida transitions to Chief Marketing, Brand, and Broadband Officer, overseeing marketing, communications, and broadband operations.
  • 4Dr. John Saw's responsibilities as CTO are expanded to include product engineering and cybersecurity.
  • 5Michael J. Katz, Chief Business and Product Officer, will step down from his role on July 8, 2026, but will serve as a strategic advisor until December 2026.
  • 6The company issued a press release on July 7, 2026, detailing these leadership changes.

Frequently Asked Questions

Chris Sambar's appointment as Chief Enterprise Officer signifies T-Mobile's increased strategic focus on growing its enterprise and government business segments. His leadership is expected to drive innovation and expansion in these crucial areas.

André Almeida is transitioning from Chief Broadband, Enterprise and Emerging Business Officer to Chief Marketing, Brand, and Broadband Officer. He will now lead marketing, communications, and broadband operations, while also assisting with enterprise responsibilities during Mr. Sambar's onboarding.

Michael J. Katz's continued role as a strategic advisor through December 2026, after stepping down from his Chief Business and Product Officer position, suggests T-Mobile values his extensive experience and insights during this period of executive transition.

This filing primarily details executive appointments and role changes. There are no immediate financial statements or specific financial performance metrics disclosed in this 8-K. Investors should monitor future filings for any direct financial impacts or strategic initiatives stemming from these leadership adjustments.