Mo Katibeh, the high-profile marketing and business leader who became a driving force behind T-Mobile for Business's innovative advertising campaigns, messaging, and product innovations, is stepping down after 30 months at the company. Katibeh is closing out a tenure he described as among "the best and happiest years" of his professional life.

He is handing the reins of T-Mobile for Business’s product, marketing, and operations leadership to Michael Labunski, whom Katibeh praised as a leader of "passion, humility, and commitment." The transition places a new face atop one of T-Mobile's most closely watched units at a moment when competitive pressure among carriers for enterprise and business wireless customers shows no signs of easing. Technology advisors (TAs) and channel partners in the communications channel will be watching this transition closely, given the company's focus on TAs, technology services distributors, and the broader channel partner ecosystem.

In a lengthy and reflective LinkedIn post, Katibeh credited the T-Mobile for Business team with posting industry-leading results across nearly every metric that matters in the fiercely competitive wireless and business-communications market — distribution expansion, revenue growth, net-add growth, churn, and porting — all while expanding EBITDA. That market has been a key battleground in the rivalry among the major carriers, with T-Mobile, Verizon, and AT&T locked in an aggressive, multi-front fight for the attention of channel partners and enterprise customers, as well as for network superiority claims and subscriber loyalty.

He cited distribution diversification as one of his team's major accomplishments. He wrote that this included "diversification of how we sell — with numerous new routes to market, expansion of third-party sales partnerships, and material broadening of digital capabilities and sales."

Katibeh also pointed to innovations such as T-Priority, SuperMobile, SuperBroadband, and ANS Edge Control as evidence that T-Mobile also pushed the pace of product development during his tenure. He hinted that Labunski will be overseeing "an amazing lineup that is still to come."

Katibeh did not reveal his next move. His post struck a tone of gratitude rather than farewell drama, emphasizing the people and culture he worked alongside over the subject of what comes next for him personally. We reached out to Katibeh, who was reticent to comment further on his T-Mobile tenure, his motivation for leaving, or his future plans, saying only that the LinkedIn post served as his public statement. "I'm leaving this chapter with tremendous pride, gratitude for the last few years, and excitement for what the future holds," he said.

Katibeh's departure marks the end of a tenure defined by aggressive marketing pushes and bold product launches. It sets up Labunski to continue that competitive momentum as the carrier wars continue. Commenting on Katibeh's LinkedIn post, Labunski said, "The most humbling of endeavors. To follow in the footsteps of someone I admire so greatly. Big honkin' shoes to fill, to say the least."

Katibeh briefly reunited with Christopher Jones, with whom he worked at AT&T for many years and who some credit with his recruitment to T-Mobile for Business. Jones recently joined T-Mobile to spearhead the company's channel partner initiatives. Katibeh spent 20 years at AT&T before joining RingCentral for a brief stint as president and COO, then moving to T-Mobile as EVP, chief marketing and product officer, in the spring of 2024.