Biotech & Life SciencesClimate & EnergyFood & AgricultureHealthcareRobotics & AutomationHardware & Semiconductors
SOSV is the world's most active deep tech venture capital firm, investing at pre-seed in startups focused on human and planetary health. It operates startup development programs including HAX and IndieBio, and is headquartered in Princeton, New Jersey.
Their most common stage is seed (46% of deals). Average disclosed round size is $10.4M (across 152 rounds with reported amounts).
Portfolio
176
Fund Size
$306M
Top Stage
Seed
Last 12 Mo
11
Team
AV
Avra van der Zee
General Partner
DZ
Deborah Zajac
General Partner
DT
Duncan Turner
General Partner & Managing Director, SOSV HAX
PW
Pae Wu
General Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
198 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 HexemBio | Seed | $10.4M | Apr 2026 |
| SSequential | Seed | $3.5M | Mar 2026 |
 Valanx Biotech | Unknown | — | Mar 2026 |
 Sable | Pre-Seed | — | Jan 2026 |
 Transition Metal Solutions | Seed | $6M | Jan 2026 |
| TTransition Metal Solutions | Seed | $6M | Jan 2026 |
 Cellens | Seed | $6.5M | Dec 2025 |
 Clara Foods | Series D | — | Nov 2025 |
 Cephia | Seed | $4M | Oct 2025 |
| CCephia Ai | Seed | $4M | Oct 2025 |
| SScindo | Seed | — | Sep 2025 |
 FloVision Solutions | Series A | $8.7M | Jul 2025 |
 Q5D | Series A | $10.9M | Jun 2025 |
 Algoma | Seed | $2.3M | May 2025 |
 Hoofprint Biome | Series A | $15M | Apr 2025 |
 Puna Bio | Series A | — | Apr 2025 |
 Mitico | Seed | $4.3M | Feb 2025 |
 Afynia | Seed | $5M | Feb 2025 |
 Hyperlume | Seed | $12.5M | Feb 2025 |
 level zero | Pre-Seed | $6.9M | Feb 2025 |
 Afynia Laboratories | Seed | — | Jan 2025 |
 Flair | Unknown | — | Dec 2024 |
 OneSkin | Series A | $20M | Nov 2024 |
 Ayrton Energy | Seed | $6.8M | Sep 2024 |
| MMesa Quantum | Seed | $3.8M | Sep 2024 |
Page 1 of 8
Top Co-Investors
HAX14 shared
Artesian8 shared
Draper Associates8 shared
Graphene Ventures5 shared
Enterprise Ireland5 shared
Entrepreneurs First4 shared
Khosla Ventures4 shared
True Ventures4 shared
Boutique Venture Partners4 shared
Gaingels4 shared
Techstars4 shared
Alumni Ventures3 shared
CPT Capital3 shared
Breakthrough Energy Ventures3 shared
Humboldt Fund3 shared
Wireframe Ventures3 shared
AgFunder3 shared
Bonfire Ventures3 shared
Spark Capital3 shared
Danone Manifesto Ventures3 shared
Last updated: 9 September 2026