# Obsidian Security Raises $85M Series D at $1.1B Valuation

On August 4, 2026, per Obsidian Security, SaaS and AI agent runtime security company raised $85M in a Series D led by Crescent Cove Advisors with Greylock Partners and Menlo Ventures at a $1.1B valuation. The company was founded in 2017 by a security industry team; co-founders include former executive Glenn Chisholm.



Canonical: https://uniquebase.ai/news/95a6f125-35a9-4c0d-b97c-a1125f5f57fc
Stable identifier: 95a6f125-35a9-4c0d-b97c-a1125f5f57fc
Snapshot captured: 2026-10-20T18:19:32.670Z
English updated: 2026-10-20T18:21:32.462Z

## Connected profiles

- [Crescent Cove Advisors](/institutions/crescent-cove-advisors)
- [Greylock Partners](/institutions/greylock-partners)
- [Menlo Ventures](/institutions/menlo-ventures)
- [Obsidian Security](/companies/obsidian-security)

## Sources

- https://www.obsidiansecurity.com/news/unlocking-ai-potential-securely