Brainstorm Ventures is a small, generalist venture capital firm founded in 1999 by former exited founders. Headquartered in San Francisco with roots in Silicon Valley and Mexico City, it invests at the earliest stages in category-defining technology startups across North America.
Average disclosed round size is $37.2M (across 13 rounds with reported amounts).
Portfolio
10
Fund Size
—
Top Stage
Series A
Last 12 Mo
0
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
13 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Stylus Medicine | Series A | $45M | May 2025 |
 Turing | Series E | $111M | Mar 2025 |
| BBedrock Materials | Seed | $9M | May 2024 |
 Glaut | Pre-Seed | $1.4M | Jan 2024 |
 Tangibly | Seed | $6.5M | Jul 2023 |
| SSpring Free EV | Series A | $31M | Apr 2023 |
| SSpring Free EV | Unknown | $31M | Jan 2023 |
 Kolors | Series A | $20M | Jun 2022 |
 Kolors | Series A | $20M | Jun 2022 |
 Turing | Series D | $87M | Dec 2021 |
| Turing | Series D | $87M | Dec 2021 |
| Turing | Unknown | $32M | Dec 2020 |
 Delightree | Seed | $3M | Jul 2020 |
Top Co-Investors
Gaingels4 shared
Foundation Capital4 shared
WestBridge Capital4 shared
AltaIR Capital4 shared
MVP Ventures4 shared
Plug and Play Tech Center3 shared
StepStone Group3 shared
HR Tech Investments3 shared
Spring Lane Capital2 shared
Bling Capital2 shared
UP.Partners2 shared
Amplifica Capital2 shared
MGV2 shared
Moving Capital2 shared
Expa2 shared
K5 Global2 shared
Toyota Ventures2 shared
Tuesday Capital2 shared
Spike Ventures2 shared
Amino Capital2 shared
Last updated: 20 October 2026