Island
Island is an Email, AppSec & GRC company founded in 2020 and based in Dallas, United States. It has raised $730M in total funding, most recently a Series E in 2025 at a $4.8B valuation.
Founded in 2020 by Mike Fey and Dan Amiga, Island pioneered the enterprise browser category, shipping a Chromium-based browser with security, governance, and data-protection controls built in rather than bolted on through extensions or separate agents. By making the browser the control point, Island lets IT teams enforce policies such as copy/paste restrictions, screenshot blocking, conditional access, and data-loss prevention on web and SaaS apps, including for contractors and unmanaged devices. The company raised a $250M Series E in March 2025 at a roughly $4.85B valuation led by Coatue, bringing total funding to around $730M.
Island created the enterprise-browser category and reached a near-$5B valuation by arguing the browser, where most work now happens, is the natural place to enforce security and governance.
island.io ↗·Email, AppSec & GRC·
United States·private 
