SOSV
UnclaimedAt a Glance
- Check Size
- $250K – $5M
- Stage
- Pre-Seed, Seed, Series A, Series B+
- AUM
- $1.3B
- Sectors
- Deeptech, Agriculture, Climate
- Founded
- 1995
- HQ
- Princeton, NJ
About SOSV
SOSV is a venture capital firm based in Princeton, NJ founded in 1995. 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. The firm focuses on Pre-Seed, Seed, Series A, Series B+ investments across sectors including Deeptech, Agriculture, Climate. The firm manages $1.3B in assets under management. Notable portfolio companies include Formlabs, Bolt Threads, HAX, IndieBio and RebelBio. Multi-stage VC with accelerator programs focusing on deep tech, climate tech, and life sciences with in-house labs and fabrication facilities.
Investment Thesis
“Multi-stage VC with accelerator programs focusing on deep tech, climate tech, and life sciences with in-house labs and fabrication facilities.”
Sector Focus
Investment Stage
Notable Portfolio Companies
Fund History
SOSV has raised five core funds since Sean O'Sullivan founded the firm in 1995. SOSV III LP, filed with SOSV Onshore III in December 2015, carried a $200 million target. SOSV IV LP was organized in 2018, took its first sale that June and closed at $277 million by December 2019, after an interim amendment showed $235.8 million against a $250 million target. The SOSV Select Fund LP, an opportunity vehicle for follow-ons into the strongest accelerator graduates, filed in October 2020 and raised $100 million. SOSV V LP was organized in 2021, took its first sale in October 2022 and had reported $130.8 million sold by August 2023; the fifth core fund ultimately reached $306 million in 2024.
A layer of programme-specific vehicles sits beneath the core funds, including the SOSV Decarbonization Consortium and its successor, the HAX Genesis Consortium, IndieBio Genesis Consortium II and III, and the SOSV Ireland Biomanufacturing Fund, which is how the firm funds cohorts without drawing on flagship capital.
SEC Fund Filings
- Vehicles filed, last 24 months
- 4
- Latest filing
SOSV filed a Form D for 4 fund vehicles between Sep 26, 2024 and Sep 25, 2026.
| Fund vehicle | Source |
|---|---|
| SOSV Decarbonization Consortium II, L.P. | SEC Form D, filed |
| SOSV PCM SPV LP | SEC Form D, filed |
| SOSV HAX GENESIS CONSORTIUM, L.P. | SEC Form D, filed |
| SOSV IndieBio Genesis Consortium III, L.P. | SEC Form D, filed |
A Form D is the notice a fund files with the SEC when it raises money in a private offering. Feeder funds, parallel funds and SPVs each file their own, so the count measures filing activity, not the number of flagship funds.
Source: SEC EDGAR Form D filings for pooled investment funds, original filings only (amendments excluded). Our filing data starts Jul 1, 2024. Vehicles are matched to SOSV by fund name and checked against the sponsor address and named principals on each filing; offering amounts are not shown. Each “SEC Form D” link opens an EDGAR full-text search for that vehicle’s exact name, where the filing itself is listed. See every new fund filing on the Form D Radar.
Team (1)
Frequently Asked Questions
What stage does SOSV invest at?
SOSV primarily invests at the Pre-Seed, Seed, Series A, Series B+ stages. This means they focus on companies that are at the earliest idea or prototype phase.
Where is SOSV located?
SOSV is headquartered in Princeton, NJ. Many of their portfolio companies are also based in this region, though they invest across geographies.
What sectors does SOSV focus on?
SOSV focuses on investments in Deeptech, Agriculture, Climate. Their portfolio reflects deep expertise and networks within these sectors.
What is SOSV's typical check size?
SOSV's typical investment check size ranges from $250K to $5M. Actual amounts may vary based on the stage, sector, and specific opportunity.
How much does SOSV have under management?
SOSV manages approximately $1.3B in assets under management (AUM) across their funds.
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