Recommended Free Tools
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Island announced a $250 million Series E on March 26, 2025, saying Coatue Management led the round and valuing the enterprise software company at $4.8 billion. The funding was intended to support Island’s enterprise browser business. It is no longer the company’s latest financing: Island announced a $400 million Series F at a $6.4 billion valuation on September 24, 2026.
What Island announced in its Series E
In its March 26, 2025 announcement, Island said it had raised $250 million in Series E funding. The company named Coatue Management as the lead investor and said existing investors also participated. Island reported a $4.8 billion valuation and approximately $730 million in total outside investment at that time.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
FortiGate-40F Firewall Appliance plus 1 Year FortiCare Premium and FortiGuard Unified Threat... | $840.45 | Buy on Amazon |
TechCrunch’s same-day report on the round gave the valuation as $4.85 billion and named Insight Partners, Sequoia, and Canapi Ventures among participants. That is a minor rounding difference from Island’s stated $4.8 billion; the named investors should not be read as a complete list.
What Island’s Enterprise Browser does
Island describes its product as a Chromium-based browser that builds enterprise security, IT, data, access, and productivity controls into the browsing experience. The basic idea is to manage access and work activity within the browser employees already use to reach web-based tools, rather than treating the browser as a separate consumer application.
#1 Best Overall
- INTEGRATED FIREWALL APPLIANCE AND SECURITY SERVICES: Comes with FortiGate-40F Firewall Appliance, 1 year of FortiCare Premium, and FortiGuard Unified Threat Protection.
- UTP SECURITY FEATURES: Offers protection from advanced threats with DNS filtering, URL filtering, video filtering, and controls against botnets.
- IDEAL FOR SMALLER SETTINGS: Best suited for small to mid-sized businesses needing reliable security without the complexity of larger systems.
- CONTINUOUS SUPPORT AND MAINTENANCE: FortiCare Premium ensures that technical help is readily available to manage and troubleshoot issues.
- COMPACT AND EFFECTIVE: Provides a powerful, yet compact security solution that effectively protects against a wide range of cyber threats.
Island’s 2025 announcement listed secure access to SaaS and web applications, zero-trust network access, bring-your-own-device (BYOD) use, contractor onboarding, mergers and acquisitions transitions, and reduced reliance on virtual desktop infrastructure (VDI) among its intended use cases. These are the company’s product descriptions, not independent findings about security effectiveness, user experience, or cost savings.
What Island reported about its growth
In March 2025, Island said it had approximately 500 employees and 450 customers. It also reported that annual recurring revenue had more than doubled each year since it emerged from stealth in February 2022. These are company-reported figures, rather than audited financial disclosures.
For context, the company’s funding announcement followed a Series D in 2024. Island did not identify every investor in the Series E announcement.
Free tools Windows power users keep installed
One-click scans. No signup required.
Island’s financing and positioning since the Series E
The Series E is a historical financing milestone, not the latest round. On September 24, 2026, Island announced a $400 million Series F led by Evolution Equity Partners and reported a $6.4 billion valuation. The company said existing and new investors participated.
In that 2026 announcement, Island also described itself as an “agentic control plane for enterprises,” saying its browser foundation had expanded to cover endpoints, networks, applications, and data, with governance for people and AI agents. This is Island’s description of its evolving product strategy.
Island’s Series E announcement quoted CEO and co-founder Mike Fey describing the Enterprise Browser as a way to adapt consumer browser software for enterprise users, IT departments, and security teams. That statement reflects the company’s characterization of its own product.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
