Israeli Founded Island Raises $400 Million at $6.4 Billion Valuation

Cybersecurity company Island has raised $400 million in a Series F financing round that values the company at $6.4 billion, marking another major funding deal involving Israeli founded cybersecurity technology.

The investors

The September 24 round was led by Evolution Equity Partners. Island listed Sequoia Capital, Coatue Management, Cyberstarts, Insight Partners, J.P. Morgan Growth Equity Partners and several other investors among the participants.

Reuters independently confirmed the size of the financing and reported that the new valuation is more than 30 percent above Island's $4.8 billion valuation in 2025.

From browser to AI agents

Island was co founded by Israeli cybersecurity entrepreneur Dan Amiga, who serves as chief technology officer, and CEO Mike Fey.

The company initially became known for its Enterprise Browser, software designed to give organizations tighter control over how employees access applications and data.

Island is now positioning the platform more broadly around the rise of autonomous AI agents.

As companies allow AI systems to interact with applications, use credentials and perform tasks, security teams face a new problem: those agents may need extensive access while still requiring the same types of identity, data and auditing controls imposed on human users.

Island says its platform now combines controls involving identity, networks, data, endpoints and observability.

What the valuation means

The $6.4 billion figure is a private market valuation. It should not be confused with revenue, profitability or cash held by the company.

Island says it employs about 1,000 people and reports rapid recurring revenue growth, although detailed revenue figures were not disclosed in the financing announcement.

Why it matters

The round is nevertheless another indication of the scale international investors are willing to commit to cybersecurity companies with Israeli founders, particularly as enterprise security expands into the emerging market for AI agent governance.