WestRiver Group is a thematically-driven investment platform that manages funds and builds companies in the global innovation economy. The firm invests across four sectors: Technology, Experience, Decarbonization, and Life Sciences.
Average disclosed round size is $22.6M (across 17 rounds with reported amounts).
Portfolio
16
Fund Size
—
Top Stage
Series B
Last 12 Mo
1
Team
RT
Robert Thomas
CHIEF INVESTMENT OFFICER
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
21 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Colossal | Series B | — | Dec 2025 |
 Lumen Bioscience | Series C | $30M | Jul 2025 |
 Groopit | Seed | — | May 2023 |
 Groopit | Seed | $3.5M | May 2023 |
| Groopit | Seed | $2M | Oct 2021 |
 TOCA Football | Series E | — | Jun 2021 |
 Design Therapeutics | Series B | $125M | Jan 2021 |
| Design Therapeutics | Series A | $45M | Jan 2020 |
 Tectonic Audio Labs | Series B | $6M | Feb 2019 |
 Pro.com | Series B | $33M | Jan 2019 |
 Wicket | Unknown | $2.8M | Jul 2018 |
| IIgneous | Series C | $25M | Jan 2018 |
| 22tor | Series D | $26M | Apr 2012 |
| 22tor | Series D | $26M | Jan 2012 |
 PTO Exchange | Seed | $5.4M | — |
 Singularity University | Series B | — | — |
 CHEQ | Seed | $8M | — |
 QorusDocs | Unknown | $10M | — |
| Wicket | Unknown | $2.8M | — |
| Lumen Bioscience | Series B | $16M | — |
| CCorus Pharma | Series A | $18.5M | — |
Top Co-Investors
Madrona Venture Group4 shared
Cercano Management4 shared
Silicon Valley Bank3 shared
Redpoint Ventures3 shared
Gates Foundation2 shared
Founders, Inc.2 shared
The Hillman Company2 shared
City Light Capital2 shared
Bessemer Venture Partners2 shared
Cormorant Asset Management2 shared
SR One2 shared
Quan Funds2 shared
RA Capital Management2 shared
Divergent Capital2 shared
The Goldman Sachs Group, Inc.1 shared
DFJ Growth1 shared
Andreessen Horowitz1 shared
Maveron1 shared
Two Sigma Ventures1 shared
Last updated: 20 October 2026