Executives/Sia CEO
Matthieu Courtecuisse, CEO of Sia

Who is the CEO of Sia in 2026?

Matthieu Courtecuisse is the Chief Executive Officer and Founder of Sia. Matthieu has held the CEO seat since 1999.

Updated September 24, 2026
Time in seat
27 years
CEO since 1999
Roles at company
2 roles
At Sia since July 1999
Previous employers
9
Before Sia
Summary
  • Matthieu Courtecuisse founded Sia in July 1999 and has led it as CEO ever since.
  • Alongside Sia, Matthieu Courtecuisse serves as Seed Investor at POWER.xyz - Creative Agent powered by 3D & AI since September 2022, Seed Investor at POWER.xyz - 3D & AI for Brands since September 2022, and Investor at Greenly since April 2021.
  • Matthieu Courtecuisse sits on the board of Turenne Groupe.

Current company

Sia

Sia is an next-generation global consulting group in strategy, artificial intelligence and management. Founded in 1999, we were born digtal. Today our strategy and management capabilities are augmented by data science, enhanced by creativity and driven by responsibility.

Business Consulting and ServicesHeadquartered in ParisPrivate company

Source: Sia on LinkedIn

Career and education

Matthieu Courtecuisse has been CEO of Sia since 1999.

Career

  1. Sia AI2017 to present
    • Chief Strategy Officer
  2. Sia1999 to present
    • Founder & CEO
  3. POWER.xyz - Creative Agent powered by 3D & AI2022 to present
    • Seed Investor
  4. POWER.xyz - 3D & AI for Brands2022 to present
    • Seed Investor
  5. Greenly2021 to present
    • Investor
  6. Turenne Groupe2021 to present
    • Member Of The Supervisory Board
  7. Happydemics2020 to present
    • Seed Investor
  8. SPARTED2019 to present
    • Investor
  9. Lettria2019 to present
    • Seed Investor
  10. Syntec Conseil2018 to 2023
    • President
  11. Big Moustache2017 to 2022
    • Board Member

Sources: LinkedIn profile

Education

ENSAE ParisSource

Decision makers by function

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

Decision maker preview

Top decision makers at Sia

Vice president level and above, most senior first
Marie-Alice GOUJARDChief People Officer · FRA@sia-partners.com
Jeff GapusanManaging Director · USA@sia-partners.com
Peter DellgrenManaging Director · USA@sia-partners.com
Gregory McNamaraManaging Director · USA@sia-partners.com
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Leadership team at Sia

Matthieu Courtecuisse leads a leadership team of 3 published executives.

Executive leadership

NameTitleIn seat since
Matthieu CourtecuisseFounder & CEO1999
Sandrine CarreauPresident & Chief Operating OfficerNot stated
Alix de GuibertChief Financial OfficerNot stated

Sources: Sia governance page

Frequently asked questions

Who is the CEO of Sia?

Matthieu Courtecuisse is the Chief Executive Officer and Founder of Sia. Matthieu has held the CEO seat since 1999.

When did Matthieu Courtecuisse become CEO of Sia?

Matthieu Courtecuisse has been CEO of Sia since 1999, according to LinkedIn profile.

How long has Matthieu Courtecuisse been CEO of Sia?

Matthieu Courtecuisse has been CEO of Sia for 27 years, since 1999.

Who else leads Sia?

Sandrine Carreau (President & Chief Operating Officer), Alix de Guibert (Chief Financial Officer). Source: Sia governance page.

Reach Sia's decision makers

80+ 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 Sia on LinkedIn. Last verified: September 24, 2026.