Upwind raises $400 million at $3.8 billion valuation

Upwind has announced a $400 million Series C funding round at a $3.8 billion valuation, led by Bessemer Venture Partners, to expand its cloud and artificial intelligence security business. The San Francisco startup said the investment will support product development and engineering growth; another account of its plans also cites a broader go-to-market push. The round brings Upwind’s total funding to more than $800 million, according to one report, and follows a $250 million Series B announced less than nine months earlier. That earlier financing, led by Bessemer, valued the company at $1.5 billion. Three reports put the Series C at $400 million, while another gives the total as $450 million. Upwind’s announcement was described as the basis for the $400 million figure. The company develops security software that monitors activity across cloud workloads, applications and AI agents. Its platform uses runtime data to help security, development and DevOps teams investigate threats and connect findings to the code and systems involved. Upwind says its AI agents can investigate alerts, test whether vulnerabilities are exploitable and identify changes that could resolve security...