All investorsQ1 2026Q4 2025Q3 2025
SOSV is a startup accelerator in Princeton, NJ. It invests at pre-seed, it backs companies in Healthcare, Biotech and Deep Tech and it leads rounds.
SOSV
Accelerator and venture firmPrinceton, NJ
The first VC check for deep tech founders, investing at pre-seed and requiring in person participation in its New York, San Francisco, or Newark programs.Source
At a glance
- Stage
- Pre-seed
- Industry
- HealthcareBiotechDeep TechClimate
- Lead
- Leads
- How to pitch
- Application form
What they look for
Backs deep tech founders in life sciences, robotics, energy, industrial automation, medtech, and transportation, explicitly avoiding enterprise software, fintech, crypto, and ecommerce. Requires more than one founder and in person participation in one of its New York, San Francisco, or Newark programs, continuing into later rounds only if it invested at pre-seed.
Portfolio highlights
Avalo.AIunspunTen63NotCoNovoloopOpenTronsUpside FoodsCradlewiseSmartexRxAll
Latest fund
- Fund size
- $21M
Their largest fund closed in the last two years, per SEC filings. This is the fund's size, not a check size.
From SEC filings
Named on filings1
SEAN O'SULLIVAN
Promoter
Last filed 27 January 2026
Funds
SOSV Decarbonization Consortium II, L.P.
SOSV IRELAND BIOMANUFACTURING FUND LP
$21M closed from their investors
SOSV HAX GENESIS CONSORTIUM, L.P.
18 venture funds in total. Shown here are the ones that filed in the last two years.
Fund filings by quarter
Q3 2024Q2 2026
SourcesLast updated 29 September 2026
Told us whether they lead. Checked 23 September 2026.
Told us their logo, the name they go by, their portfolio and the stage they invest at. Checked 23 September 2026.
Told us how they take pitches, how to apply, what they invest in, the one-line description above and what they look for. Checked 23 September 2026.
Told us what kind of investor they are. Checked 23 September 2026.
Website
Confirmed as theirs on 22 September 2026.
SEC Form D, 3 filings
Funds, partners and board seats. Filed between 12 August 2025 and 27 January 2026.
SEC Form ADV
Firm name, office and fund count. CRD 284976. Last filed 23 March 2026.