Island Raises $400M Series F at a $6.4B Valuation
Enterprise-browser company Island raised $400 million in a Series F led by Evolution Equity Partners, bringing its valuation to $6.4 billion.
TL;DR: Island announced a $400 million Series F on September 24, 2026, led by Evolution Equity Partners. The company said the financing brought its valuation to $6.4 billion.
Canonical company profile: Island.
The financing
Island's announcement provides both pieces of information that often go missing from private-company coverage: the round size and the valuation.
| Item | Figure |
|---|---|
| Series F | $400M |
| Valuation | $6.4B |
| Date | September 24, 2026 |
| Lead | Evolution Equity Partners |
Because both figures came from the company announcement, VCT treats them as company-disclosed rather than estimated.
What Island does
Island builds an enterprise browser and control plane designed to let companies enforce security and workflow policies directly in the browser.
That makes Island relevant to more than traditional endpoint security. As companies deploy AI agents and automate browser-based work, the browser can become a policy and audit layer for both human and machine activity.
Why the valuation matters
The $6.4 billion mark is another signal that enterprise-browser security has moved from a niche category toward a major enterprise software market.
The important diligence question is not simply whether the category is large. It is whether Island can become a durable system of control rather than an additional security layer customers eventually consolidate.
Funding versus product search intent
People searching for "Island browser" are often looking for the product, not financing data. VCT therefore keeps the financing event attached to a permanent company profile instead of trying to make a funding article answer every product question.
That profile is the better place for the long-lived questions: funding history, investors, valuation, ownership and public/private status.
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Editorial note: AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.
