Key facts
- Upwind Security raised $400 million in a Series C round at a $3.8 billion valuation.
- Bessemer Venture Partners led the round, with Canapi Ventures joining as a new investor.
- The company's revenue quadrupled in 2026.
- Upwind Security was founded in 2022 and has raised over $800 million to date.
Upwind Security announced Wednesday it has raised $400 million in a Series C funding round led by Bessemer Venture Partners, valuing the company at $3.8 billion. This valuation is up from $1.5 billion in January. The company stated that its revenue quadrupled in 2026, though it did not disclose specific dollar figures. The funds will be used for product and engineering growth, including developing AI sensors for endpoints and scanners for AI agents, as well as expanding into identity, data, and AI security. Upwind Security, founded in 2022, has now raised over $800 million.