Upwind raised $400 million at a $3.8 billion valuation, funding further development of its runtime cloud and AI security platform.
Cloud security company Upwind raised $400 million in a funding round that values it at $3.8 billion, according to Bloomberg reporting cited by Quartz on October 28. Bessemer Venture Partners led the financing, with existing investors including Greylock Partners and Craft Ventures also participating. The company’s prior valuation was $1.5 billion in January, and it has raised $830 million since its 2022 launch.
Upwind monitors activity in cloud environments to identify threats such as malware, unusual behavior and exploitable vulnerabilities. The company has also added coverage of AI-related threats and built tools to monitor AI applications and autonomous agents while they run. Its platform uses runtime signals, including process and network activity, to help security teams assess which risks are active rather than relying only on vulnerability lists.
The new financing follows earlier reports about a possible larger round, but the October coverage describes the $400 million raise as completed. Upwind said the funding will support engineering as well as sales and marketing. Quartz reported that the company has roughly 600 employees across the United States, Israel, Europe and Asia.
The round comes as organizations deploy more AI applications and agents alongside conventional cloud workloads, creating additional systems and activity for security teams to oversee. Upwind’s AI monitoring features are part of a broader cloud security platform, rather than a standalone AI product. The company’s CEO told Bloomberg that Upwind was on pace for nearly $100 million in annual recurring revenue by year-end; that is a company projection, not a reported finalized result.
The financing gives Upwind additional capital to develop its security products and expand operations. The reported valuation and revenue outlook are company and investor-market figures, and do not independently establish how widely the platform is being adopted or how effectively its AI security features perform.