Sebastien de Halleux
Founding General Partner at Graph Ventures
San Francisco, California
Sebastien de Halleux, Founding General Partner at Graph Ventures is an active investor based in San Francisco, California. This profile covers what Sebastien de Halleux backs, at which stage, and how founders can reach out in 2026.
- Investor type
- AngelVCOperatorFounder
- Stages
- Pre SeedSeed
- Invests in
- Climate & EnergyArtificial IntelligenceSpace & AerospaceConsumer & RetailMarketplaceRobotics & Automation
- Location
- San Francisco, California
- Typical check
- $150K
- Past investments
- 21
Notable investments
Banyan
Vantage Robotics
Sparkcentral
Open Air PublishingRileyHow to reach Sebastien de Halleux
Angels and operators like Sebastien de Halleux reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded Accelerator.
Connect with Sebastien de Halleux
Frequently Asked Questions
What does Sebastien de Halleux invest in?
Sebastien de Halleux invests in Climate & Energy, Artificial Intelligence, Space & Aerospace and Consumer & Retail, typically at Pre Seed and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Sebastien de Halleux invest at?
Sebastien de Halleux typically invests at Pre Seed and Seed. Lead with traction that fits the stage when you reach out.
What is Sebastien de Halleux's typical check size?
Sebastien de Halleux typically writes checks around $150K. Use it as a signal for whether your raise fits their stage.
How do I contact Sebastien de Halleux?
Unlock Sebastien de Halleux's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.