Brian DeMuth
Solo GP · Fredericksburg, Virginia
Named as one of two individuals (Manager of the General Partner of the Issuer) on the Form D for Riphean National Security Fund, LP, a $10M venture fund (Jul 2023).
Angel Investment Confidence Score
Algorithmic score indicating recent deal velocity, check size reliability, and investment conviction in early-stage startups.
Why Brian DeMuth holds a 76/100 confidence score
- Verified past startup investments on public record
- Target check sizes calibrated between $100K–$300K
- Clear domain thesis in Cybersecurity
- Named as one of two individuals (Manager of the General Partner of the Issuer) on the Form D for Riphean National Security Fund, LP, a $10M venture fund (Jul 2023).
Building in Cybersecurity? See how well your pitch deck matches Brian DeMuth’s thesis.
Check My Startup FitVerified investment track record
Named as one of two individuals (Manager of the General Partner of the Issuer) on the Form D for Riphean National Security Fund, LP, a $10M venture fund (Jul 2023).
Source: SEC Form D: Riphean National Security Fund, LP (Jul 11, 2023)
- Stages
- Pre-seed, Seed
- Typical check (est.)
- $100K–$300K
- Verified deals
- 1 on file
- Latest activity
- Jul 2023
Is Brian DeMuth a fit for you?
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What sectors does Brian DeMuth back?
CybersecurityVerified investments & deal activity
1 deal trackedRecent startup investments, syndicate rounds, and public co-investments across the US and Europe.
- Jul 2023
Riphean National Security Fund, LP
Invested through a fund
Public Verification Sources
- SEC Form D: Riphean National Security Fund, LPJul 11, 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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