Jon Sisk
Solo GP · Santa Cruz, California
Named as one of two individuals (Managing Partner of the Manager of the General Partner of the Fund) on the Form D for CircularIT Ventures Fund I, LP, a $5M venture fund (Nov 2023).
Angel Investment Confidence Score
Algorithmic score indicating recent deal velocity, check size reliability, and investment conviction in early-stage startups.
Why Jon Sisk holds a 76/100 confidence score
- Verified past startup investments on public record
- Target check sizes calibrated between $50K–$150K
- Cross-sector early stage track record
- Named as one of two individuals (Managing Partner of the Manager of the General Partner of the Fund) on the Form D for CircularIT Ventures Fund I, LP, a $5M venture fund (Nov 2023).
Building in Technology & Software? See how well your pitch deck matches Jon Sisk’s thesis.
Check My Startup FitVerified investment track record
Named as one of two individuals (Managing Partner of the Manager of the General Partner of the Fund) on the Form D for CircularIT Ventures Fund I, LP, a $5M venture fund (Nov 2023).
Source: SEC Form D: CircularIT Ventures Fund I, LP (Nov 13, 2023)
- Stages
- Pre-seed, Seed
- Typical check (est.)
- $50K–$150K
- Verified deals
- 1 on file
- Latest activity
- Nov 2023
Is Jon Sisk a fit for you?
See your AI startup fit score, verified contact channels, and warm paths through your network.
What sectors does Jon Sisk back?
Sector focus not yet verifiedVerified investments & deal activity
1 deal trackedRecent startup investments, syndicate rounds, and public co-investments across the US and Europe.
- Nov 2023
CircularIT Ventures Fund I, LP
Invested through a fund
Public Verification Sources
- SEC Form D: CircularIT Ventures Fund I, LPNov 13, 2023
Data refreshed from SEC filings and public European announcements Oct 15, 2026. Is this you? Correct or remove this profile.
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