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NASDAQ: TMUS T-Mobile US, Inc. 8-K

T-Mobile names Chris Sambar Chief Enterprise Officer; Mike Katz to depart after 20+ years

Filed July 7, 2026 · Period ending July 2, 2026 · ~1 min read

4 key changes 2 high relevance 3 sections

Key Changes

  • high

    Chris Sambar, former AT&T executive and current Public Storage COO, joins as Chief Enterprise Officer by Oct 14 to lead SMB, enterprise, government, and emerging growth businesses including T-Ads and Physical AI.

    Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →
  • high

    Mike Katz steps down as Chief Business & Product Officer effective July 8 after two decades, remaining as strategic advisor through December 2026 to support transition.

    Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →
  • medium

    André Almeida transitions from Chief Broadband, Enterprise & Emerging Business Officer to Chief Marketing, Brand & Broadband Officer, consolidating consumer wireless and broadband oversight with COO Jon Freier.

    Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →
  • medium

    CTO Dr. John Saw's role expands to include product engineering and cybersecurity, consolidating technical functions to advance AI and 6G development.

    Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →

Summary

T-Mobile executed a significant leadership restructuring aligned with strategic priorities outlined in its February 2026 Capital Markets Update.

The company hired wireless industry veteran Chris Sambar from Public Storage to lead its enterprise, government, and emerging growth segments as Chief Enterprise Officer, a role focused on scaling newer businesses like T-Ads and Physical AI alongside traditional B2B operations.

Simultaneously, Mike Katz, a 20-year veteran who helped shape the Un-carrier movement, is departing to pursue other opportunities, with his responsibilities redistributed across the new structure. The reorganization consolidates consumer-facing operations under André Almeida's expanded marketing and broadband role, while Dr. John Saw's CTO organization absorbs product engineering and cybersecurity to streamline next-generation network development. For investors, the changes signal T-Mobile's commitment to diversifying revenue beyond core wireless—the enterprise and emerging business focus under Sambar directly supports growth targets in segments the company has identified as key expansion areas. Katz's departure after two decades represents the loss of institutional knowledge, though the extended advisory period through year-end should ease the transition.

Section-by-Section Diff

Event · Exhibit 99.1

5 Added
Added Chris Sambar appointed Chief Enterprise Officer high

Added in current filing · view on EDGAR →

T-Mobile (NASDAQ: TMUS) today announced that wireless industry veteran Chris Sambar will join the company as Chief Enterprise Officer, effective no later than October 14, 2026. Mr. Sambar will report to T-Mobile CEO Srini Gopalan and will lead T-Mobile’s fast-growing SMB, enterprise and government businesses while scaling the company’s emerging growth opportunities.

T-Mobile hired Chris Sambar, currently Chief Operating Officer at Public Storage and previously a two-decade AT&T veteran, as Chief Enterprise Officer. He will oversee the company's small and medium business, enterprise, and government segments, plus emerging growth areas like T-Ads and Physical AI. The appointment is part of a leadership restructuring to align with strategic priorities outlined in T-Mobile's February 2026 Capital Markets Update.

Added André Almeida role expansion medium

Added in current filing · view on EDGAR →

T-Mobile also announced that André Almeida, currently Chief Broadband, Enterprise & Emerging Business Officer, is appointed to an expanded position as Chief Marketing, Brand & Broadband Officer. In this role, Mr. Almeida will partner with Chief Operating Officer Jon Freier to oversee T-Mobile’s consumer wireless and broadband businesses, focusing on capturing new growth segments and continuing to win with customers.

André Almeida's responsibilities expanded from Chief Broadband, Enterprise & Emerging Business Officer to Chief Marketing, Brand & Broadband Officer. He will now oversee both consumer wireless and broadband businesses alongside COO Jon Freier, focusing on growth segments. This shift consolidates consumer-facing operations under unified leadership.

Added Mike Katz departure medium

Added in current filing · view on EDGAR →

T-Mobile also announced that Mike Katz, its Chief Business & Product Officer, has decided to step away and pursue new professional interests. He will remain in a strategic advisory role through December 2026 to support a seamless transition.

Mike Katz, Chief Business & Product Officer with over 20 years at T-Mobile, is leaving to pursue other opportunities. He will stay in an advisory capacity through December 2026 to ensure a smooth transition. CEO Srini Gopalan credited Katz with helping shape the Un-carrier movement and driving transformative initiatives.

Added CTO organization restructuring medium

Added in current filing · view on EDGAR →

T-Mobile’s network, technology, product engineering and cyber will be integrated under the leadership of Dr. John Saw, Chief Technology Officer, positioning the company to advance seamless connected experiences for consumers and build the next generation of AI and 6G experiences.

T-Mobile consolidated network, technology, product engineering, and cybersecurity functions under Chief Technology Officer Dr. John Saw. This integration aims to streamline development of AI and 6G technologies and improve customer experiences. The restructuring reflects T-Mobile's strategic focus on next-generation network innovation.

Added Strategic priorities and growth focus medium

Added in current filing · view on EDGAR →

Consistent with the strategic priorities outlined in its February 2026 Capital Markets Update, T-Mobile’s next era will be powered by a relentless commitment to continue redefining consumer wireless, accelerating growth in new businesses expanding beyond core wireless, the expansion of America’s Best Network with innovative technology to transform customer experiences, and an unwavering focus on strengthening the Un-carrier spirit built on challenging the status quo.

T-Mobile reiterated its strategic priorities from the February 2026 Capital Markets Update: redefining consumer wireless, expanding beyond core wireless into new businesses, advancing network technology, and maintaining its disruptive Un-carrier culture. The leadership changes are explicitly designed to execute these priorities and drive growth in enterprise, broadband, and emerging segments like T-Ads and Physical AI.

Event · Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation

~200 words

Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation filed; see Key Changes for terms.

4 Added
Added Chris Sambar appointed Chief Enterprise Officer medium

Added in current filing · verify on EDGAR →

T-Mobile US, Inc. (the “Company”) announced that it has appointed Chris Sambar as its Chief Enterprise Officer, effective no later than October 14, 2026. In this role, Mr. Sambar will oversee the Company’s enterprise and government businesses and will report directly to Srinivasan Gopalan, the Company’s President and Chief Executive Officer.

T-Mobile has hired Chris Sambar as Chief Enterprise Officer, effective by October 14, 2026. He will lead the company's enterprise and government business units and report to CEO Srinivasan Gopalan. This represents a new senior leadership addition focused on the enterprise segment.

Added André Almeida role transition medium

Added in current filing · verify on EDGAR →

In connection with Mr. Sambar’s hiring, André Almeida, currently the Company’s Chief Broadband, Enterprise and Emerging Business Officer, will transition to the role of Chief Marketing, Brand, and Broadband Officer. In this capacity, Mr. Almeida will lead the Company’s marketing, communications, and broadband operations, while also continuing to oversee certain enterprise responsibilities during Mr. Sambar’s onboarding period.

André Almeida is transitioning from Chief Broadband, Enterprise and Emerging Business Officer to Chief Marketing, Brand, and Broadband Officer. He will lead marketing, communications, and broadband operations, and will retain some enterprise oversight during Sambar's onboarding. This represents a shift in responsibilities as part of the leadership reorganization.

Added Michael Katz departure high

Added in current filing · verify on EDGAR →

After over two decades in various leadership positions with the Company, Michael J. Katz, the Company’s Chief Business and Product Officer, has decided to step away from his position at the Company effective July 8, 2026, but he will remain with the Company as a strategic advisor through December 2026.

Michael Katz is stepping down as Chief Business and Product Officer effective July 8, 2026, after more than 20 years with T-Mobile. He will continue as a strategic advisor through December 2026. This represents the departure of a long-tenured senior executive, with his responsibilities being redistributed among the other leadership changes announced.

Show 1 minor / wording change
Added Dr. John Saw expanded responsibilities low

Added in current filing · verify on EDGAR →

Additionally, Dr. John Saw, the Company’s Chief Technology Officer, will expand his purview to include product engineering and cybersecurity, in addition to his existing responsibilities.

Dr. John Saw, the Chief Technology Officer, is expanding his role to include product engineering and cybersecurity alongside his existing CTO duties. This consolidates additional technical functions under the CTO organization.

Event · Item 7.01 — Regulation FD Disclosure

~100 words

T-Mobile appointed Chris Sambar as Chief Enterprise Officer and announced other leadership team changes.

1 Added
Added Chief Enterprise Officer appointment medium

Added in current filing · verify on EDGAR →

T-Mobile issued a press release announcing the appointment of Chris Sambar as the Company’s Chief Enterprise Officer and other changes to the Company’s leadership team.

T-Mobile appointed Chris Sambar to the newly disclosed role of Chief Enterprise Officer. The 8-K references additional leadership team changes but does not detail them in the body text. This is a Regulation FD disclosure, meaning the company is publicly releasing material information simultaneously to all investors.

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Figures/quotes linked to EDGAR · Narrative written by AI · Jul 8, 2026 · How we verify