Upwind raises Series C at a $3.8 billion valuation

Bloomberg reports that the financing values Upwind at $3.8 billion.[1] Upwind says Bessemer Venture Partners led the Series C and lists Greylock Partners, Cyberstarts, Craft, Salesforce Ventures, Alta Park, Picture Capital, Swish Ventures, Cerca Partners, TCV, Penny Jar and Leaders Fund in its announcement.[2] The company also said it was excited to welcome Canapi Ventures.[2] Upwind put its total funding at more than $800 million following the financing.[2] The available evidence does not specify the Series C’s dollar amount.

The company says it is developing AI sensors for endpoints, scanners for agents and skills, and a redesigned inventory graph.[2] It describes its approach as “endpoint-to-code-to-cloud.”[2] These are company descriptions of its plans and product approach; the evidence does not provide independent performance results for the tools.

Upwind said its Series C came less than nine months after it announced a $250 million Series B.[2] The company’s account of that January 2026 Series B says it brought total investment at the time to more than $430 million.[5] TechCrunch reported that Upwind walked away from an acquisition offer from Datadog and characterized the offer as being for the same price.[3]

Bloomberg describes Upwind as a San Francisco-based startup offering cybersecurity for artificial intelligence and cloud applications.[1] Upwind says it is building a platform to secure cloud and AI infrastructure, and describes its work as spanning endpoints, code and cloud.[2] The company also characterized itself as one of the most capitalized companies focused on cloud and AI security.[2] That characterization is Upwind’s own; the supplied evidence does not include a comparative market analysis.