Series F · Cybersecurity

Island raises $400m Series F at $6.4bn valuation

Evolution Equity Partners led the financing as enterprises expand their use of AI agents and modernise digital operations.

Capital for the next enterprise-security phase

Island announced its $400 million Series F on September 24 at a $6.4 billion valuation. Evolution Equity Partners led, with existing and new investors participating.

The company says its valuation has more than doubled since 2024. The financing supports its next phase of growth and product development as customers extend security controls from employee browsing into AI-agent interactions with applications and data.

Use of funds

Fund the company’s next phase of growth and innovation as enterprises scale AI agents and modernize work.

Funding history

Series F · This round$400M

Sources

  1. The Week’s 10 Biggest Funding Rounds: Cybersecurity, AI And Health Take The Lead news.crunchbase.com · Sep 25, 2026
  2. Island Raises $400M in Series F at $6.4 Billion Valuationfinsmes.com · Sep 24, 2026