Thomas Callahan
Syndicate lead · New York, New York
Named as the only individual (executive officer) on the Form D for Spartan Fund II, a Series of SecondMarket Growth, LLC, a $11.3M venture SPV (Sep 2026) (4 vehicles on file).
Angel Investment Confidence Score
Algorithmic score indicating recent deal velocity, check size reliability, and investment conviction in early-stage startups.
Why Thomas Callahan holds a 96/100 confidence score
- Verified active check-writing activity within the last 12 months
- Target check sizes calibrated between $2.29M–$11.3M
- Clear domain thesis in AI & ML, Deep Tech, Developer Tools
- Named as the only individual (executive officer) on the Form D for Spartan Fund II, a Series of SecondMarket Growth, LLC, a $11.3M venture SPV (Sep 2026) (4 vehicles on file).
Building in AI & ML, Deep Tech, Developer Tools? See how well your pitch deck matches Thomas Callahan’s thesis.
Check My Startup FitVerified investment track record
Named as the only individual (executive officer) on the Form D for Spartan Fund II, a Series of SecondMarket Growth, LLC, a $11.3M venture SPV (Sep 2026) (4 vehicles on file).
Source: SEC Form D: Spartan Fund II, a Series of SecondMarket Growth, LLC (Sep 18, 2026) · 3 more sources
- Stages
- Pre-seed, Seed
- Typical check (est.)
- $2.29M–$11.3M
- Verified deals
- 0 on file
- Latest activity
- Sep 2026
Is Thomas Callahan a fit for you?
See your AI startup fit score, verified contact channels, and warm paths through your network.
What sectors does Thomas Callahan back?
AI & MLDeep TechDeveloper ToolsPublic Verification Sources
- SEC Form D: Spartan Fund II, a Series of SecondMarket Growth, LLCSep 18, 2026
- SEC Form D: Kinetic Fund IV, a Series of SecondMarket Growth, LLCSep 10, 2026
- SEC Form D: Frontier Infra Fund VII, a Series of SecondMarket Growth, LLCAug 14, 2026
- SEC Form D: AI CNGL Fund IV, a Series of SecondMarket Growth, LLCJun 24, 2026
Data refreshed from SEC filings and public European announcements Oct 15, 2026. Is this you? Correct or remove this profile.
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