Thomvest Ventures, based in California, backs specialist fintech, proptech, cybersecurity, infrastructure, and enterprise software startups from Seed to Series B, can lead rounds, and writes checks from $500k to $30 million.
2 people on the investing team, 2 of them partners who can make the call. Partners are listed first.


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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.
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Thomvest Ventures reports entry at seed, series a, series b.
Thomvest Ventures reports checks of $500K to $30M.
Yes. Thomvest Ventures says it can lead.
Don Butler (Managing Director), Peter Thomson (Chairman and Founder).
No recent activity since September 2026.
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