Short answer
T-Mobile US (TMUS) filed an 8-K current report with the SEC on July 7, 2026 reporting Item 5.02 (Departure/Election of Directors or Officers), Item 7.01 (Regulation FD Disclosure), Item EX-99.1 (Exhibit EX-99.1). Chris Sambar appointed Chief Enterprise Officer by October 14, 2026, overseeing enterprise and government businesses.
T-Mobile US 8-K event analysis
AI summary of each reported item and its exhibits
Item 5.02 · Departure/Election of Directors or Officers
- Chris Sambar appointed Chief Enterprise Officer by October 14, 2026, overseeing enterprise and government businesses
- André Almeida shifting to Chief Marketing, Brand, and Broadband Officer, retaining certain enterprise responsibilities during onboarding
- John Saw expanding oversight to product engineering and cybersecurity, increasing technology leadership responsibilities
- Michael J. Katz departing Chief Business and Product Officer role July 8, 2026, remaining strategic advisor through December 2026
- Leadership realignment signals focused accountability across enterprise, broadband, marketing, product engineering, and cybersecurity functions
Item 7.01 · Regulation FD Disclosure
- Chris Sambar appointed T-Mobile’s Chief Enterprise Officer
- Additional leadership changes announced, potentially affecting enterprise strategy and execution
- Press release attached as Exhibit 99.1 for names, effective dates, and transition details
Item EX-99.1 · Exhibit EX-99.1
- Leadership reshuffle targets growth beyond wireless, including SMB, enterprise, government, T-Ads and Physical AI
- Chris Sambar joins as Chief Enterprise Officer by October 14, 2026, leveraging AT&T network and enterprise experience
- André Almeida expands to Chief Marketing, Brand & Broadband Officer, supporting consumer wireless and broadband growth
- Network, technology, product engineering and cyber consolidated under CTO John Saw for AI and 6G development
- Mike Katz departs Chief Business & Product Officer, remaining strategic adviser through December 2026; transition risk remains a consideration
Generated from the filing text and exhibits; verify against the original. What 8-K item codes mean
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