SOSV
sosv.com Direct + LP
SOSV is a venture capital firm that invests in deep tech startups at pre-seed stage, providing labs and offices in multiple locations. It also manages funds and welcomes limited partners.
SOSV is a venture capital firm headquartered in San Francisco, United States, founded in 1995. It invests both directly in companies and in funds as a limited partner, from pre-seed to Series B, in deep tech, climate tech, human health and physical AI. Its stated cheque size is up to $550k each. $1.5B under management and 800 portfolio companies, as it reports.
“SOSV is the world’s most active deep tech venture capital firm investing at pre-seed, with deeply resourced locations for founders in New York, Newark, and San Francisco.”
— SOSV, own website
- Layer
- Direct + LP
- Type
- Venture capital
- Headquarters
- San Francisco, United States
- Invests in
- global
- Sectors
- deep tech, climate tech, human health, physical AI, critical minerals, women's health, sustainable fashion
- Cheque size
- up to $550k each
- Founded
- 1995
- Assets under management
- $1.5B
- Portfolio
- 800 companies
Team, as SOSV publishes it
- Sean O’Sullivan Managing General Partner
- Cyril Ebersweiler General Partner
- Pae Wu General Partner
- Po Bronson General Partner
- Stephen Chambers General Partner
- Mohan S. Iyer General Partner
- Duncan Turner General Partner
- Avra van der Zee General Partner
- Deborah Zajac General Partner
Names and roles exactly as listed on sosv.com. Nothing else about these people is recorded.
Co-invests most often with
Derived from portfolio pages both investors publish themselves: each pair below lists at least one company in common. 119 co-investors found.
- At One Ventures 6 shared companies: agfundernews.com, axios.com, yahoo.com, betakit.com…
- Taurus Ventures Capital Management, LLC 4 shared companies: agfundernews.com, axios.com, yahoo.com, inc.com
- BOLD Capital Partners 4 shared companies: axios.com, yahoo.com, betakit.com, pulse2.com
- Red Cell Partners 4 shared companies: axios.com, yahoo.com, inc.com, pulse2.com
- TenOneTen Ventures 4 shared companies: axios.com, yahoo.com, betakit.com, inc.com
- Engine Ventures 3 shared companies: agfundernews.com, axios.com, pulse2.com
- Leo Capital 3 shared companies: agfundernews.com, yahoo.com, pulse2.com
- AI Ventures Management, LLC 3 shared companies: axios.com, yahoo.com, pulse2.com
- Congruent Ventures 3 shared companies: axios.com, yahoo.com, pulse2.com
- Foresite Capital 3 shared companies: axios.com, yahoo.com, inc.com
and 109 more — the graph.
Where this comes from
Every fact above was read from a page SOSV publishes itself. Nothing is taken from third-party databases. Investment activity (deals, co-investors) is not yet recorded.
- https://sosv.com/name, is_investor, layer, type, hq_country, hq_city, invests_in_geographies, stage_min, stage_max, cheque_size, thesis_quote, thesis_quote_page, description, portfolio_count, status, confidence
- https://sosv.com/portfolio/sectors
- https://sosv.com/about/founded, aum
- https://sosv.com/team/people
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Record 1326 · added 2026-08-28 · link last verified 2026-09-06 · confidence high
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