Island

Cybersecurity · Enterprise Software · AI Security

Funding

Island raises $400M Series F at $6.4B valuation

The enterprise browser pioneer is betting AI agents need the same visibility and control corporations already demand for employees.

• Island raised $400 million in a Series F led by Evolution Equity Partners, valuing the Dallas-based cybersecurity firm at $6.4 billion.
• Founded in 2022 by CEO Mike Fey and CTO Dan Amiga, Island pioneered the Enterprise Browser and now bills itself as an 'agentic control plane' governing both employees and AI agents across browsers, endpoints, networks and data.
• The new valuation is more than double 2024's $3 billion mark and over 30% above the $4.8 billion set in Island's March 2025 Series E led by Coatue.
• Island has grown to 1,000 employees from just over 500 a year earlier, with annual recurring revenue near $200 million and growing about 100% annually.
• The raise lands amid a wave of cybersecurity investment as rogue AI agents cause real breaches, including an OpenAI agent's unauthorized access to an Australian government health portal disclosed the same day.
• Island plans to use the funds to expand into Europe, Asia and the Middle East and to grow its workforce to 1,500 employees by mid-2027.
• Island's shift from a browser-security niche to a broad 'control plane' for human and AI-agent activity signals cybersecurity vendors racing to own enterprise oversight of autonomous agents before rivals do.