Upwind Security

Cybersecurity · Cloud Security · AI Security

Funding

Upwind raises $400M Series C, valuation jumps to $3.8B

The valuation held flat from September even as the round grew by $100 million, a sign investors backed growth over price appreciation.

• Upwind Security closed a $400 million Series C led by Bessemer Venture Partners at a $3.8 billion post-money valuation, announced October 28, 2026.
• Founded in 2022 by CEO Amiram Shachar with Tal Zur, Lavi Ferdman and Liran Polak, Upwind runs a runtime-based platform that monitors cloud workloads, APIs and AI agents to flag live threats.
• The round was first reported at $300 million in September and grew by another $100 million by close, with Canapi Ventures joining as a new backer alongside returning investors.
• Upwind's valuation more than doubled in nine months, from $1.5 billion at its January 2026 Series B to $3.8 billion now, as the company says revenue quadrupled over 2026.
• Total funding since the 2022 founding now tops $800 million, and the close comes days after a disputed report that monitoring giant Datadog had offered nearly $4 billion to acquire Upwind.
• CEO Amiram Shachar reportedly said he has 'never ruled out a sale,' leaving open whether Upwind pursues an IPO or an acquisition path despite staying independent for now.
• A flat valuation despite a larger raise suggests investors are pricing security startups on durable growth rather than headline momentum, even as AI-driven threats fuel sector-wide dealmaking.