Brian DeMuth

Solo GP · Fredericksburg, VA

Brian DeMuth is a solo GP based in Fredericksburg, VA focused on Cybersecurity, investing at pre-seed, seed stage. Brian DeMuth's most recent fund with a disclosed size, Riphean National Security Fund, LP, filed a $10M offering with the SEC in Jul 2023. Estimated typical check: $100K–$300K. Brian DeMuth's latest dated investing activity was in Jul 2023.

Why Brian DeMuth is listed

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)

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Stages: Pre-seed, Seed
Typical check (est.): $100K–$300K
Latest fund: $10M · Jul 2023
Latest dated activity: Jul 2023

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What does Brian DeMuth invest in?

Cybersecurity

What has Brian DeMuth invested in recently?

Riphean National Security Fund, LP
Invested through a fund
Jul 2023

Funds and deal vehicles Brian DeMuth filed with the SEC

Riphean National Security Fund, LP
Fund · $10M offering
Jul 2023

Sources

SEC Form D: Riphean National Security Fund, LPJul 11, 2023

Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.