Island, the enterprise-focused agentic control plane provider, has closed a $400m Series F funding round that lifts its valuation to $6.4bn, more than twice the figure it reached in 2024.

Evolution Equity Partners headed the investment, joined by a mix of new and returning backers.

Among the existing investors taking part were Prysm Capital, Sequoia Capital, Coatue Management, Cyberstarts, Insight Partners, J.P. Morgan Growth Equity Partners, Alta Park Capital, Georgian, G Squared and Squarepoint. Cybersecurity entrepreneur Dmitri Alperovitch also made a further personal investment.

The fresh capital will support the next stage of Island’s expansion and product development as businesses increase their use of AI agents and overhaul the way work is carried out. The company positions its technology as the layer that gives organisations the oversight, control and auditing capabilities required in the AI era.

Island has 1,000 employees and has doubled its annual recurring revenue (ARR) in each fiscal year since launching in 2022. It attributes this steady expansion to growing enterprise appetite for faster AI adoption, networks redesigned around end users, simpler security infrastructure and the protection of sensitive data without creating obstacles for staff.

The firm first established the Enterprise Browser category by building security, access and productivity controls directly into the environment where most knowledge work takes place. It has since extended this base to consumer browsers via an extension, along with endpoints, applications, modern SASE and data. Its agentic control plane uses a single policy engine and a single audit trail across the entire sequence of work activities while keeping the user experience seamless.

Source link