Lionbridge Brings in New CEO Following Change in Ownership

Lionbridge has named Sebastian Bretschneider as its new Chief Executive Officer, effective May 4, 2026. Bretschneider has served as a senior executive at a variety of businesses globally, with a track record in turnaround and “transformation” roles. 

The CEO change comes three months after global investment firm KKR took over ownership of Lionbridge from H.I.G. Capital Management. Bretschneider replaces John Fennelly, who had served as CEO of the super agency since 2017.

“Lionbridge sits at the intersection of language and technology and has built impressive global scale while serving some of the world’s most respected companies,” said Bretschneider in a press release announcing the appointment. “The company’s global footprint, its depth of customer relationships, and the caliber of its people are extraordinary. I’m honored to join Lionbridge at this moment and look forward to partnering with the team during this phase to accelerate what’s being built here.”

Bretschneider’s LinkedIn profile says he has “a proven record of successfully implemented transformation/turnaround mandates” and that he is “Industry-agnostic, with a focus on asset-/people-based industries.” 

Lionbridge’s Chief AI Officer Will Rowlands-Rees told Slator that the company is “winning new business at a strong pace, and the priority continues to be delivering successful outcomes” for clients, and that Bretschneider is focused on “building on that momentum, ensuring we continue to meet customers’ evolving needs, and helping them succeed in an increasingly complex global market.”

Bretschneider’s appointment comes at a time when large, incumbent Language Solutions Integrators (LSIs) like Lionbridge grapple with the impact of AI on a traditionally human-centric industry. Rowlands-Rees noted that Lionbridge has a “comprehensive suite of AI solutions” including the Aurora AI orchestration platform and multiple products for AI-driven localization and multilingual content. He also highlighted the company’s data-for-AI business, Lionbridge AI, which is “providing ethically sourced training data, expert annotation, and human-in-the-loop evaluation, backed by our global community of more than half a million experts.” Lionbridge has reentered data-for-AI in recent years after selling much of that business in 2021 to Telus for nearly USD 1bn.