Cyril Ebersweiler is a General Partner at SOSV and founder and co-Managing Director of HAX. He is an experienced investor in deep tech and a board member to several startups.
What Cyril can write
SOSV writes $500K to $1M checks, larger than 71% of firms in the atlas.
Bars: how many firms report each check band. Highlighted: SOSV.Career
- SOSV · General PartnerNow
- HAX · founder and co-Managing Director
- HAX · co-Managing Director
Companies founded
Investments named in public bios
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Also at SOSV
Partners like Cyril
At firms with a similar stage, sector and check size.
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One email when Cyril's firm raises a fund, adds a partner or shows new activity.
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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Who is Cyril Ebersweiler?
Cyril Ebersweiler is a General Partner at SOSV and founder and co-Managing Director of HAX. He is an experienced investor in deep tech and a board member to several startups.
How much does Cyril Ebersweiler invest?
Cyril Ebersweiler invests through SOSV, which writes checks of $500K to $1M at pre-seed.
How do I pitch Cyril Ebersweiler?
A warm intro from a founder SOSV backed works best.
What did Cyril Ebersweiler do before SOSV?
founder and co-Managing Director at HAX; co-Managing Director at HAX.
Last updated 2026-10-15. Is this you? Ask for a correction.