645 Ventures

Activity from announced rounds

Activity in this selectionSeries C+

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.

Sources
Rounds participated in
1
Confirmed lead rounds
—
1 roles undisclosed
New companies
1
First participation on record · 0 follow-on
Funding in participating rounds
$650M
1 disclosed · full round size, not this investor’s share

By stage

Series C+1

By primary sector

Space tech1

By country

United States1

Rounds

1 in this selection
True Anomaly

Builds autonomous spacecraft, advanced payloads, mission software, and space-based interceptors for U.S. national security

$650MSeries D
Role not disclosed