645 Ventures

Activity from announced rounds

Activity in this selectionOct 24, 2026 · Cybersecurity · Jan 1, 2026

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
2
Confirmed lead rounds
—
2 roles undisclosed
New companies
2
First participation on record · 0 follow-on
Funding in participating rounds
$31.5M
2 disclosed · full round size, not this investor’s share

By stage

Seed1
Series A1

By primary sector

Cybersecurity1
Fintech1

By country

United States2

Rounds

2 in this selection
Variance

Builds AI investigative agents for risk and compliance

$21.5MSeries A
Role not disclosed