Builds security infrastructure for agentic AI
645 Ventures
Activity from announced rounds
645 Ventures is an investment firm whose partners include Aaron Holiday and Nnamdi Okike. Its AI infrastructure and developer-tools coverage identifies Gimlet Labs, while its own communications connect the firm to Ellis.
Recorded funding activity
The recorded activity includes Gimlet’s Series B for a compiler and cloud platform that distribute AI inference across processor types. Seed financings for Ellis, Fish Audio and General Analysis cover private-credit operations, voice generation and security for AI agents. These examples describe announcements covered by RoundOS rather than the firm’s complete portfolio.
- Rounds participated in
- 3
- Confirmed lead rounds
- — 3 roles undisclosed
- New companies
- 3 First participation on record · 0 follow-on
- Funding in participating rounds
- $664.5M 3 disclosed · full round size, not this investor’s share
By stage
By primary sector
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Rounds
3 in this selectionBuilds autonomous spacecraft, advanced payloads, mission software, and space-based interceptors for U.S. national security
Provides AI marketing intelligence platform for decision-dense marketing functions