David Mandell
Solo GP · Boulder, CO
David Mandell is a solo GP based in Boulder, CO, investing at pre-seed, seed stage. David Mandell's most recent fund with a disclosed size, Massive Fund II, LP, filed a $30M offering with the SEC in May 2026. David Mandell has 4 funds and deal vehicles on SEC file, including 3 single-deal SPVs. Estimated typical check: $300K–$900K. David Mandell has dated investing activity in the last 12 months (latest May 2026).
Why David Mandell is listed
Named as one of two individuals (Manager of the Issuers Manager) on the Form D for Massive Fund II, LP, a $30M venture fund (May 2026) (4 vehicles on file: 1 fund, 3 SPVs).
Source: SEC Form D: Massive Fund II, LP (May 12, 2026) · 3 more sources
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- Stages
- Pre-seed, Seed
- Typical check (est.)
- $300K–$900K
- Latest fund
- $30M · May 2026
- Latest dated activity
- May 2026
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Funds and deal vehicles David Mandell filed with the SEC
- May 2026
Massive Fund II, LP
Fund · $30M offering
- Nov 2025
Deimos, a series of Massive Scale Ventures III LLC
Deal vehicle · $129K offering
- May 2025
Hosta III, a series of Massive Scale Ventures III, LLC
Deal vehicle · $70K offering
- May 2025
Callisto, a series of Massive Scale Ventures III, LLC
Deal vehicle · $194K offering
Sources
- SEC Form D: Massive Fund II, LPMay 12, 2026
- SEC Form D: Deimos, a series of Massive Scale Ventures III LLCNov 17, 2025
- SEC Form D: Hosta III, a series of Massive Scale Ventures III, LLCMay 13, 2025
- SEC Form D: Callisto, a series of Massive Scale Ventures III, LLCMay 13, 2025
Data refreshed from public sources Oct 15, 2026. Is this you? Remove or correct this profile.