SOSV
sosv.com Direct investor
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 directly in companies, at pre-seed, 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 investor
- Type
- Venture capital
- Stage
- Pre-seed
- 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.
Most shared portfolio companies with
Derived from portfolio pages both investors publish themselves: each pair below lists at least one company in common. 119 investors with a shared portfolio company. A shared company is not proof they invested together in the same round.
- 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 2026-10-21 · confidence high
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