645 Ventures

Activity from announced rounds

Activity in this selectionFeb 28, 2026 · AI · Feb 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
3
Confirmed lead rounds
—
3 roles undisclosed
New companies
3
First participation on record · 0 follow-on
Funding in participating rounds
$36.8M
3 disclosed · full round size, not this investor’s share

By stage

Seed2
Series B1

By primary sector

Enterprise software2
Fintech1

By country

United States3

Rounds

3 in this selection
Uptiq

Builds AI agents and orchestration platform for financial institutions like banks and credit unions

$25MSeries B
Role not disclosed
Pelgo

AI-powered career transition agent providing job placement and reskilling services

$5.5MSeed
Role not disclosed
Arbor

Automates AI-powered interviews with frontline employees and customers to surface operational intelligence for enterprises

$6.3MSeed
Role not disclosed