Dallas-based cybersecurity startup Island has raised $250 million in a Series E round, pushing its valuation to $4.85 billion.
The round was led by Coatue, with participation from existing investors including Sequoia Capital, Insight Partners, and Canapi Ventures. This brings Island’s total funding to $730 million.
Building a Secure Browser for the Enterprise
Island has developed a Chromium-based enterprise browser designed to offer greater security and control for corporate environments. Unlike standard commercial browsers, Island’s solution gives IT and security teams advanced capabilities such as:
- Universal access control
- Device visibility and management
- Application automation
- Built-in security features to prevent data leakage or insider threats
The browser appears like a typical interface to the end-user but provides deep protection and compliance tools in the background.
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Fast-Growing Demand and Customer Base
The firm’s valuation nearly doubled from $2.9 billion just 11 months ago, following a $175M Series D round co-led by Sequoia and Coatue. The company now serves 450 enterprise customers, including notable names like Mattress Firm, Swiss Life, and Fiverr.
Sequoia partner Doug Leone previously said Island’s unique combination of a secure architecture and familiar user experience was key to their early conviction in backing the company.
Looking Ahead
With this latest funding, the company is poised to:
- Further expand its enterprise customer base
- Accelerate product development and R&D
- Continue scaling its go-to-market operations globally
At just under five years old, the cybersecurity company is emerging as a major player in the next generation of enterprise cybersecurity, offering a browser-centric approach to protecting today’s distributed and cloud-first workforces.
