Claude Guillemot, the 69-year-old co-founder of Ubisoft Entertainment SA, died June 19 when his Cessna 421 crashed near La Baule, France, killing two people. The Guillemot family's controlling stake in the Paris-listed publisher now faces succession uncertainty.
Claude Guillemot, the 69-year-old co-founder of French video game publisher Ubisoft Entertainment SA, died June 19 when his Cessna 421 twin-engine aircraft crashed in a field near the La Baule aerodrome in western France, according to local fire and rescue services. The crash also killed the aircraft's operator, bringing the total death toll to two.
"The plane was on approach for the landing phase, when, according to witnesses, it made a turn and crashed," Franck Louvrier, mayor of La Baule-Escoublac, said in a statement, as reported by French media outlet ICI. The aircraft burst into flames upon impact, igniting several football fields' worth of vegetation, and sixty firefighters were mobilized to contain the blaze.
Guillemot co-founded Ubisoft in 1986 alongside his four brothers — Yves, Michel, Christian and Gerard — building it into one of the world's largest video game publishers behind franchises including Assassin's Creed, Far Cry and Tom Clancy's Rainbow Six. At the time of his death, he also served as chairman and chief executive officer of Guillemot Corp., the family's computer hardware and gaming accessories business that predated Ubisoft's founding.
The Guillemot family has maintained shareholder control of Ubisoft since its inception, fending off at least one hostile takeover attempt and navigating a recent corporate restructuring after declining sales. The company closed two studios and cut as many as 380 staff in June 2026 as part of that restructuring. Claude Guillemot's death introduces fresh uncertainty around the family's succession planning and its ability to maintain controlling influence over the Paris-listed publisher, which has a market capitalization of roughly 2.5 billion euros.
Ubisoft shares are likely to face pressure when trading resumes, as investors assess the leadership vacuum and the potential for increased acquisition speculation. The Guillemot family's grip on the company has been a key structural feature that limited takeover scenarios; his passing could alter that calculus.
This article is for informational purposes only and does not constitute investment advice.
