Thomvest Ventures is a cross-stage venture capital firm based in San Francisco, with an additional office in Toronto. The firm invests in fintech, proptech, cybersecurity, cloud infrastructure, and sales and marketing technology, managing capital on behalf of Peter J. Thomson and his family.
Deal activity decreased year-over-year (3 deals in the last 12 months vs 5 prior). Average disclosed round size is $68.8M (across 69 rounds with reported amounts).
Portfolio
54
Fund Size
$250M
Top Stage
Series B
Last 12 Mo
3
Team
Yvonne Verheij
Vice President, Accounting and Finance
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
76 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Lumilens | Seed | $700M | Aug 2026 |
 Opaque Systems | Series B | $24M | Feb 2026 |
 Ladder Health | Seed | $7M | Jan 2026 |
| Lumilens | Series C | $700M | Jan 2026 |
| OOpaque | Series B | $24M | Jan 2026 |
 Deductive AI | Seed | $7.5M | Nov 2025 |
 Ox Security | Series B | $60M | May 2025 |
 Exaforce | Series A | $75M | Apr 2025 |
 Neo Financial | Series D | — | Nov 2024 |
 Relyance AI | Series B | $32.1M | Oct 2024 |
 StackGen | Seed | $12.3M | Sep 2024 |
 Bolster | Series B | $14M | May 2024 |
 Alsym Energy | Series C | $78M | Apr 2024 |
 Bolster | Series B | $15M | Jan 2024 |
| Alsym Energy | Series C | — | Jan 2024 |
 Cohere | Series C | $270M | Jun 2023 |
| Neo Financial | Series B | $64M | Jan 2023 |
 Isovalent | Series B | $40M | Sep 2022 |
 DistillerSR | Growth | $20M | Aug 2022 |
| Opaque Systems | Series A | $22M | Jun 2022 |
| OOpaque | Series A | $22M | Jun 2022 |
 Keyway | Series A | $25M | Jun 2022 |
 Keep Financial | Seed | $9M | May 2022 |
 Harness | Series D | $230M | Apr 2022 |
| HHarness.io | Series D | $230M | Apr 2022 |
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Top Co-Investors
GV11 shared
Sequoia Capital9 shared
Bain Capital Ventures7 shared
Battery Ventures7 shared
Alkeon Capital Management7 shared
M126 shared
Menlo Ventures6 shared
Sorenson Capital6 shared
Norwest Venture Partners6 shared
Y Combinator6 shared
Gaingels6 shared
Crosslink Capital6 shared
Unusual Ventures5 shared
Cheyenne Ventures5 shared
Citi Ventures5 shared
Intel Capital5 shared
Greylock Partners4 shared
ServiceNow Ventures4 shared
Cervin4 shared
Liberty Global Ventures4 shared
Last updated: 7 October 2026