Executives/Alstom CEO
Martin Sion, CEO of Alstom

Who is the CEO of Alstom in 2026?

Martin Sion is the Chief Executive Officer and Chairman of Alstom. Martin has held the CEO seat since April 2026, and was previously Président Exécutif at ArianeGroup.

Updated September 24, 2026
Time in seat
5 months
CEO since April 2026
Career span
36 years
First recorded role June 1990
Education
CentraleSupélec
Option Air-Espace, Option Air-Espace
Summary
  • Before Alstom, Martin Sion was Président Exécutif at ArianeGroup from April 2023 to March 2026.
  • Martin Sion was Président du GEAD at GIFAS - Groupement des Industries Françaises Aéronautiques et Spatiales from July 2020 to April 2023.
  • Martin Sion studied at CentraleSupélec and Lycée Sainte-Geneviève.

Current company

Alstom

Alstom is a French rolling stock manufacturer.

activities of head officesHeadquartered in Saint-Ouen-sur-SeineFounded 1928Listed on Euronext Paris

Source: Wikidata

Career and education

Martin Sion has been CEO of Alstom since April 2026. Before Alstom, Martin was Président Exécutif at ArianeGroup from April 2023 until March 2026.

Career

  1. Alstom2026 to present
    • Chief Executive Officer
  2. ArianeGroup2020 to 2026
    • Président ExécutifApril 2023 to March 2026
    • Board MemberApril 2020 to March 2023
    • Membre du conseil d'administrationApril 2020 to March 2023
  3. GIFAS - Groupement des Industries Françaises Aéronautiques et Spatiales2020 to 2023
    • Président du GEAD
  4. Safran1990 to 2023
    • Président Safran Electronics & DefenseJune 2015 to April 2023
    • Président-Directeur Général AircelleJuly 2013 to June 2015
    • Directeur Division Moteurs SpatiauxSeptember 2010 to June 2013
    • Directeur Centre d'Excellence Industrielle SnecmaFebruary 2009 to September 2010
    • Directeur Démarche de Progrès SnecmaDecember 2006 to January 2009
    • Chef du Groupe Technique - Division Moteurs SpatiauxFebruary 2005 to December 2006
    • Chef de l'Unité de Conception "Organes de Combustion Moteurs Fusées"​October 2000 to February 2005
    • Chef de Marque Technique HM7BJanuary 1999 to September 2000
    • Chef de service conception organes de combustionJanuary 1996 to December 1998
    • Ingénieur Combustion R&T et Conception Societe Europenne de PropulsionJune 1990 to December 1995
  5. Sandia National Laboratories1990 to 1992
    • Visiting Scientist

Sources: LinkedIn profile

Education

CentraleSupélec, Option Air-Espace, Option Air-EspaceLycée Sainte-GenevièveSource

Decision makers by function

790+ decision makers at Alstom in Unify, vice president level and above. Choose a function to see who leads it.

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Top decision makers at Alstom

Vice president level and above, most senior first
Nathalie Saint-MartinChief Procurement Officer · FRA@alstom.com
Philippe DelleurSenior Vice President Public Affairs · FRA@alstom.com
Alexandre DominguesChief Digital Services officer · FRA@alstom.com
Eddy TheseeVice President Cybersecurity · FRA@alstom.com
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Leadership team at Alstom

Martin Sion leads a leadership team of 12 published executives.

Most senior 5 of 12

NameTitleIn seat since
Martin SionChief Executive OfficerApril 2026
Danny Di PernaExecutive Vice President & Chief Operating OfficerNot stated
Emmanuelle PetrovicGeneral CounselNot stated
Marcella HoffmannChief Human Resources OfficerNot stated
Kevin CogoChief Strategy Officer and Secretary of the Alstom Leadership CommitteeNot stated

Sources: Alstom corporate governance page

Frequently asked questions

Who is the CEO of Alstom?

Martin Sion is the Chief Executive Officer and Chairman of Alstom. Martin has held the CEO seat since April 2026, and was previously Président Exécutif at ArianeGroup.

When did Martin Sion become CEO of Alstom?

Martin Sion has been CEO of Alstom since April 2026, according to LinkedIn profile.

What did Martin Sion do before Alstom?

Martin Sion was Président Exécutif at ArianeGroup from April 2023 until March 2026, according to LinkedIn profile.

How long has Martin Sion been CEO of Alstom?

Martin Sion has been CEO of Alstom for 5 months, since April 2026.

Who else leads Alstom?

Danny Di Perna (Executive Vice President & Chief Operating Officer), Emmanuelle Petrovic (General Counsel), Marcella Hoffmann (Chief Human Resources Officer), Kevin Cogo (Chief Strategy Officer and Secretary of the Alstom Leadership Committee), and 7 more. Source: Alstom corporate governance page.

Reach Alstom's decision makers

790+ leaders at vice president level and above, with verified work emails and phone numbers in Unify.

Methodology

The seat holder is identified in Unify's professional profile dataset, then confirmed against the company's published leadership page, its SEC filings, and Wikipedia before publication. Career and education rows carry the public document they were taken from. Leadership team membership follows the company's own leadership page; in-seat dates come from filings where available and otherwise from the profile record. Company figures are read from the Unify headcount page for the same company and are profile coverage measures, never company-reported workforce totals. The employee preview lists vice president and senior vice president level profiles by department. No personal contact details are published.

Identity confirmed against Wikipedia, Alstom. Last verified: September 24, 2026.