
ArianeGroup CEO Martin Sion to become Alstom chief as Ariane 6 production ramps
Martin Sion, currently executive chairman of ArianeGroup, has been named chief executive of French train maker Alstom and will replace Henri Poupart‑Lafarge in April; he will not seek renewal of his ArianeGroup mandate and remain in post until March 2026 as Ariane 6 production ramps.