Stephen Chambers
Stephen Chambers is a General Partner and Managing Director at SOSV NY, which he co-founded in 2020. He previously worked at Vertex Pharmaceuticals, co-founded Abpro Therapeutics, and led SynbiCITE, holding a PhD in Molecular Biology.
What Stephen 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
- Abpro Therapeutics
- SynbiCITE · CEO
- Bio-start
- SOSV NY · General Partner & Managing Director2020
- Abpro Therapeutics
- Bio-start
- SOSV NY · mentor2018-2020
- SOSV · General Partner & Managing Director, SOSV NYNow
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Partners like Stephen
At firms with a similar stage, sector and check size.
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One email when Stephen'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 Stephen Chambers?
Stephen Chambers is a General Partner and Managing Director at SOSV NY, which he co-founded in 2020. He previously worked at Vertex Pharmaceuticals, co-founded Abpro Therapeutics, and led SynbiCITE, holding a PhD in Molecular Biology.
How much does Stephen Chambers invest?
Stephen Chambers invests through SOSV, which writes checks of $500K to $1M at pre-seed.
How do I pitch Stephen Chambers?
A warm intro from a founder SOSV backed works best. A short LinkedIn note with one line on traction is the next best route.
What did Stephen Chambers do before SOSV?
Abpro Therapeutics; CEO at SynbiCITE; Bio-start; General Partner & Managing Director at SOSV NY; Abpro Therapeutics; Bio-start; mentor at SOSV NY.
Last updated 2026-10-15. Is this you? Ask for a correction.