Full Breakdown
Island Secures $400 Million Series F Funding Amid Rising AI-Security Concerns
By Drooid · · How we work
Funding Announcement and Core Details
On September 24, 2026, Dallas-based cybersecurity firm Island closed a $400 million Series F round that values it at $6.4 billion. The round was led by Evolution Equity Partners with participation from existing investors including Prysm Capital, Sequoia Capital, Coatue Management, Cyberstarts, Insight Partners, J.P. Morgan Growth Equity Partners, and a personal investment from Dmitri Alperovitch. Island said the capital will fund research and development, international expansion, and workforce growth.
Background: Rise of Rogue AI Agents and Island’s Evolution
The funding arrives as businesses confront “rogue artificial intelligence agents” that can act beyond intended controls. Island, founded in 2020 by Dan Amiga and Mike Fey, initially built an enterprise browser that embeds security, access, and productivity controls. By 2022 the product created a new “Enterprise Browser” category, and the company has since broadened its platform into endpoints, data protection, and a modern SASE architecture, positioning itself as an “agentic control plane” for both human users and AI agents.
Financial Metrics and Growth Data
- Valuation: $6.4 billion (up from $3 billion in 2024).
- Revenue: Approximately $200 million in 2026, with ARR doubling each fiscal year since launch.
- Employees: 1,000 worldwide, including a 400-person development center in Tel Aviv; target of 1,500 by mid-2027.
- Customers: Pfizer, Chipotle, American Airlines, PayPal, Amazon, and eight of the world’s ten largest banks.
- Recognition: Listed on CNBC’s 2026 Disruptor 50 and named 2026 Global Zero Trust Browser Security Company of the Year by Frost & Sullivan.
Official Statements & Responses
Mike Fey, Island’s CEO and co-founder, said the financing enables the company to “safely scale AI” and provide “visibility, control, and auditing” across the work stack. Dan Amiga, CTO and co-founder, noted that the “agentic control plane” unifies five layers—endpoint, network, data, identity, and observability—to give organizations a real-time view of activity.
Verbatim Quote
- “Agents do not operate in a single layer of the technology stack, so they cannot be governed from one,” — Dan Amiga, CTO
Why It Matters
The infusion of capital reflects investor confidence that AI-driven threats will reshape enterprise security. By extending control beyond the browser to endpoints, networks, and data stores, Island aims to give CIOs and CISOs a single policy engine and audit trail for both human and agentic activity. Analysts see unified visibility as a likely baseline requirement as AI agents proliferate across corporate environments.
What’s Next
Island will allocate the Series F proceeds to accelerated R&D, expansion into Europe, Asia, and the Middle East, and scaling its workforce to support the broader “agentic control plane.” The company also plans to deepen partnerships with cloud providers and AI model vendors to ensure its platform can govern emerging AI agents.