Overwater Ventures is an early-stage venture capital firm founded by Kristina Simmons that partners with technical founders solving the world's biggest problems in human and planetary health. The firm invests at the pre-seed and seed stages in breakthrough technologies across biology, healthcare, AI, robotics, and climate.
36% of their portfolio is in Healthcare. Their most common stage is seed (55% of deals). Average disclosed round size is $15.8M (across 9 rounds with reported amounts).
Portfolio
10
Fund Size
$20M
Top Stage
Seed
Last 12 Mo
2
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
11 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Apaluma | Seed | $5.5M | Jan 2026 |
 Adaptyx Biosciences | Seed | $14M | Oct 2025 |
| AAdaptyx | Seed | $14M | Oct 2025 |
 Penguin AI | Series A | $29.7M | Sep 2025 |
 Overture Life | Series B | — | Apr 2025 |
 BeSound | Seed | $6.8M | Jan 2025 |
| Penguin AI | Seed | — | Jan 2024 |
 Gameto | Series A | $20M | Jan 2022 |
| HHyfé | Seed | $9M | — |
 Trial Library | Series A | $10M | — |
 Tiny | Series B | $33M | — |
Top Co-Investors
Lux Capital3 shared
Plug and Play Tech Center3 shared
Gaingels2 shared
ManchesterStory Group2 shared
Canvas Prime2 shared
SemperVirens Venture Capital2 shared
Horizon Mutual Holdings2 shared
GV2 shared
Seaside Equity Partners2 shared
Interlagos2 shared
Cantos2 shared
Stanford University2 shared
Hyperlink Ventures2 shared
Starbloom Capital2 shared
Bold Capital Partners1 shared
Future Fund1 shared
True Ventures1 shared
Plum Alley Ventures1 shared
TA Associates1 shared
Watershed Ventures1 shared
Last updated: 20 October 2026