Island, a cybersecurity startup specializing in enterprise browsers, raised $400 million in a Series F round, valuing the company at $6.4 billion. The funding was led by Evolution Equity Partners with participation from Prysm Capital and Sequoia Capital, marking the company’s largest financing round to date. Island’s valuation has grown from $3 billion in 2024 to $6.4 billion currently, more than doubling in roughly two years. The company reports approximately $200 million in annual recurring revenue with roughly 100% year-over-year growth. It serves over 700 enterprise clients including eight of the world’s ten largest banks.
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