Sebastien de Halleux

Founding General Partner, Graph Ventures
Sebastien de Halleux, serial entrepreneur-operator and co-founder of Playfish, Saildrone and Field AI, brings gaming, ocean-tech and robotics product experience and prioritizes product quality and user delight over monetization.
How to contact Sebastien de Halleux
Stages their fund invests in
N/A
Avg Check
$50K - $300K
N/A
Does their fund Lead?
No
N/A
Geos their fund invests in
USA, Canada, LatAm, Europe, Israel, Asia-Pacific, India
Sebastien de Halleux
Stages their fund invests in
N/A
Sectors their fund invests in
Fintech
Ecommerce
Marketplaces
Enterprise
SaaS
Education
Deeptech / Hardware
Media
AI
Devtools
Proptech
Web3 / Crypto
N/A
Avg Check
$50K - $300K
N/A
Leads?
No
N/A
Close X
Industries
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About Sebastien de Halleux

Sebastien de Halleux is a serial entrepreneur-operator who co-founded Playfish (one of the earliest social gaming studios), Saildrone (autonomous ocean data drones), and Field AI (field autonomy for robots), giving him hands-on experience building products across consumer gaming, ocean tech, and AI robotics rather than coming from a traditional finance background. He maintains a distinctive philosophy that there is no such thing as a low-quality user, only a low-quality experience, focusing on product quality and user delight over short-term monetization tactics.

Sebastien de Halleux's Interests

What they've been talking about across their social media accounts
  • Passion for the intersection of mobile gaming and professional sports. He is actively building and promoting a football-based gaming platform, frequently highlighting partnerships with global stars like Lionel Messi and Alexia Putellas to engage fans during major events like the World Cup.
  • Dedication to ocean technology and climate data collection. He often reflects on his operational experience with autonomous marine vehicles, citing specific missions where drones were used to map ocean currents or measure carbon absorption to help scientists better understand planetary systems.
  • Interest in deep tech and frontier engineering. He celebrates tangible advancements in hardware and transportation, such as the development of electric seagliders by Regent Craft or the engineering feats involved in NASA space exploration missions.
  • Belief in capital as a tool for environmental impact. He discusses the responsibility of investors to support climate solutions, noting that while venture capital is transformative, solving global warming requires collaboration that extends beyond just financial backers.

About their Fund

Graph Ventures

Sectors
Fintech, Ecommerce, Marketplaces, Enterprise, SaaS, Education, Deeptech / Hardware, Media, AI, Devtools, Proptech, Web3 / Crypto
Rounds
Seed - Series A
Avg Check Size
$50K - $300K

Graph Ventures is an early-stage fund run by active founders and operators who are still building companies, rather than ex-operators who switched to VC full-time. Since 2011, they've invested in 300+ teams with nine unicorns and multiple IPOs/M&A exits, while maintaining 70% diversity in their latest fund and investing over a third of their portfolio outside the U.S.

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