Greylock Partners

Activity from announced rounds

Activity in this selectionOct 16, 2026 · Jul 19, 2026
Rounds participated in
4
Confirmed lead rounds
0
1 roles undisclosed
New companies
4
First participation on record · 0 follow-on
Funding in participating rounds
$505M
4 disclosed · full round size, not this investor’s share

By stage

Series A2
Series C+2

By primary sector

AI1
Cybersecurity1
Ecommerce1
Fintech1

By country

United States3
1

Rounds

4 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
Highstock

A wholesale marketplace helping brands sell surplus inventory to business buyers.

$30MSeries A
Participant
Obsidian Security

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

$85MSeries D
Role not disclosed
NXYZ

NXYZ provides real-time blockchain data APIs that help Web3 developers access indexed network activity in their applications.

$40MSeries A
Participant