T-Mobile Business Leadership Changes Amid Executive Exit
Enterprise customers should monitor for potential shifts in product strategy and account support following this management change.
Updated on Oct. 27, 2026 in People
Mo Katibeh has departed his role as EVP and CMO of T-Mobile US Business, with Michael Labunski stepping in to lead business product, marketing, and operations. The change follows a series of leadership adjustments within the carrier's enterprise division.
Why it matters
Changes in key leadership roles for business operations often signal shifts in product strategy or go-to-market execution for enterprise clients. Operators should monitor whether these management transitions alter the service terms or account management support for small and mid-sized business customers.
Mo Katibeh concludes a three-year tenure at T-Mobile US Business, a period following his 20-year career at AT&T and two years at RingCentral. Michael Labunski, formerly chief data officer at RingCentral, now leads business product, marketing, and operations for the company.
The players
Mo Katibeh
Former EVP and CMO of T-Mobile US Business with a background in telecom leadership at AT&T and RingCentral.
Michael Labunski
The new lead for business product, marketing, and operations at T-Mobile who previously served as chief data officer at RingCentral.
T-Mobile US
A national wireless carrier that provides communication services to enterprise and small business customers.
Mike Katz
Former chief business and product officer who is currently serving in an advisory capacity until December 2026.
Chris Sambar
The current chief enterprise officer at T-Mobile responsible for the company's enterprise operations.
The details
Mo Katibeh confirmed his departure from T-Mobile US via a LinkedIn post, marking the latest executive shuffle for the business segment. Michael Labunski, who previously worked with Katibeh at RingCentral, assumes direct oversight of the business division's product and marketing functions. These moves occur alongside broader leadership transitions at T-Mobile, including the July 2026 departure of Mike Katz and the appointment of Chris Sambar as chief enterprise officer.
Timeline
April 2024: Mo Katibeh joined T-Mobile.
July 2026: Mike Katz stepped down and Chris Sambar was appointed.
October 2026: Mo Katibeh departed T-Mobile.
December 2026: Mike Katz concludes his advisory role.
Market Landscape
This leadership transition follows the pattern of reorganization set by the July 2026 appointment of Chris Sambar as chief enterprise officer. The change reflects a broader restructuring within the carrier's executive suite that began earlier this year.
Operators should review their current enterprise account agreements and support contacts to ensure service continuity during this executive transition. Monitor upcoming product announcements to determine if new leadership shifts the focus toward different hardware or software solutions.
The takeaway
Leadership changes at the executive level often precede shifts in how an organization engages with its business-to-business customer base. Operators should track the next 90 days of product updates to identify any changes to service bundling or enterprise account support policies.
What happens next
Mike Katz will conclude his advisory role with the company in December 2026.
Further reading
For broader insights into corporate restructuring, see the latest updates in People.
