Greylock Partners

Activity from announced rounds

Activity in this selectionOct 22, 2026 · AI · Jul 25, 2026
Rounds participated in
2
Confirmed lead rounds
0
1 roles undisclosed
New companies
2
First participation on record · 0 follow-on
Funding in participating rounds
$435M
2 disclosed · full round size, not this investor’s share

By stage

Series C+2

By primary sector

AI1
Cybersecurity1

By country

United States2

Rounds

2 in this selection
Snorkel AI

Snorkel AI helps enterprises build expert-curated training data and benchmarks for advanced AI models and agents.

$350MSeries E
Participant
Obsidian Security

Secures non-human identities and AI agents operating in third-party applications

$85MSeries D
Role not disclosed