Upwind Security raises $400 million at a $3.8 billion valuation
Upwind Security announced a $400 million Series C round led by Bessemer Venture Partners, valuing the AI and cloud cybersecurity startup at $3.8 billion. The valuation increased from $1.5 billion in January 2026. The reports say total funding reached approximately $830 million, and Upwind plans to use the proceeds to accelerate product development and expand its go-to-market operations.
The financing gives Upwind additional resources to expand its runtime-focused cloud and AI security platform and grow its enterprise presence.
The moment a cloud workload changes, the security picture around it can change too. A new application release, an altered configuration or an interaction between services may affect whether an exposure can be exploited. For security teams relying on periodic assessments, keeping pace with those changes can be difficult.
Upwind Security has built its cloud and AI security platform around the need to understand infrastructure while it is running. The company announced a $400 million Series C round led by Bessemer Venture Partners, valuing it at $3.8 billion after revenue quadrupled in 2026.
#Upwind Security#Bessemer Venture Partners#Canapi Ventures#Greylock Partners#Cyberstarts#Craft Ventures#Salesforce Ventures#TCV#Alta Park Capital