Sebastien de Halleux
UnclaimedCurrent Firm
Graph Ventures
Investments
2+ companies
Focus
Fintech, Marketplace
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.
Focus Areas
Investment Stage
Notable Investments
Other Investors at Graph Ventures
Investment Profile
Sebastien de Halleux is a Founding General Partner, Graph Ventures at Graph Ventures, based in Brussels, Belgium.
Sebastien's investment focus spans Fintech, Marketplace, Enterprise, EdTech, Deeptech, AI, DevTools, Web3, SaaS, primarily investing at the Pre-Seed, Seed, Series A, Series B+ stages. This specialization allows for deep domain knowledge and strong network effects that benefit portfolio companies.
Notable investments include Dapper Labs, Hinge. These investments span Fintech and Marketplace.
Frequently Asked Questions
Who is Sebastien de Halleux?
Sebastien de Halleux is a Founding General Partner, Graph Ventures at Graph Ventures, based in Brussels, Belgium. Their investment focus includes Fintech, Marketplace, Enterprise.
What does Sebastien de Halleux invest in?
Sebastien de Halleux focuses on investments in Fintech, Marketplace, Enterprise, EdTech, Deeptech, AI, DevTools, Web3, SaaS through Graph Ventures. These focus areas reflect their domain expertise and the types of startups they actively seek to back.
What are Sebastien de Halleux's most notable investments?
Sebastien de Halleux's notable portfolio investments include Dapper Labs, Hinge. These companies span multiple sectors and stages, reflecting a track record of identifying high-potential startups.
What firm is Sebastien de Halleux at?
Sebastien de Halleux is currently at Graph Ventures, headquartered in Brussels, Belgium, serving as Founding General Partner, Graph Ventures.
Fund Operations Resources
Independent guides to the software and workflows venture investors and their firms use to run funds.
Best Fund Administration Software
Independent breakdown of fund administration platforms by fund size.
LP Reporting Software
Tools for capital account statements and investor updates.
Portfolio Monitoring Tools
How GPs track company performance across the portfolio.
VC CRM Software
Deal-flow and relationship management for investors.
Related tools and reading
The operating system for private capital.
Archstone runs the back office for venture, PE, real estate, and credit funds — LP reporting, capital calls, portfolio tracking, and fund accounting, in one platform. Now in alpha.