Oak Emerges From Stealth Mode With $60 Million in Funding

Israeli cybersecurity startup Oak has emerged from stealth mode with $60 million in seed funding to build an AI-powered Identity Operating System.

The investment round was co-led by Accel, Greylock Partners, and CRV, with additional support from Hetz Ventures, AlphaDrive Ventures, and angel investors.

Founded in late 2025, Tel Aviv- and San Francisco-based Oak has built a platform that unifies identity governance within a single, continuously updated control plane.

Already generally available, Oak’s Identity Operating System aims to replace legacy identity governance and security tools with a single solution covering all human, AI, and machine identities across an organization’s environment.

The platform connects to an organization’s applications across cloud, on-premises, SaaS, and homegrown systems to build connectors within hours, understanding each identity based on raw evidence instead of static records.