Upwind $400 Million Funding Values Cloud-Security Startup at $3.8 Billion
The Upwind $400 million funding round values the cloud and AI security startup at $3.8 billion, marking a sharp rise from its earlier valuation as companies invest in tools to protect increasingly complex cloud environments. The Series C round was led by Bessemer Venture Partners, with existing investors participating and Canapi Ventures joining as a new backer.
The Israeli-founded company announced the round on October 28. The new capital brings Upwind’s total funding to more than $800 million since its founding in 2022. The company said the proceeds will support product development and expansion of its cloud and AI security platform.
Upwind $400 Million Funding Follows Earlier 2026 Round
The latest investment comes less than nine months after Upwind raised $250 million in a Series B round. That financing valued the company at $1.5 billion, according to reporting on the earlier deal. The new $3.8 billion valuation represents a substantial increase in the period between the two rounds.
The investor group includes Bessemer Venture Partners, Greylock Partners, Cyberstarts, Craft Ventures, Salesforce Ventures, TCV, Alta Park Capital, Penny Jar Capital, Cerca Partners, Picture Capital and Leaders Fund. Canapi Ventures joined the round as a new investor. Upwind did not disclose further financial terms in its announcement.
The company said its revenue quadrupled in 2026, but did not provide an absolute revenue figure in its funding announcement. That growth claim is company-reported and has not been independently verified. The company’s valuation reflects investor expectations about its future prospects, rather than a guarantee of future performance.
Cloud and AI Security Draw Investor Attention
Upwind develops security tools that monitor live cloud workloads, application programming interfaces and AI agents. Its approach, which the company describes as runtime security, is designed to give security teams context about activity in active environments rather than relying only on periodic scans or isolated alerts.
The platform supports Amazon Web Services, Microsoft Azure, Google Cloud and Oracle Cloud Infrastructure. The company says its tools help organisations identify exploitable exposures, investigate threats and address risks as systems operate. Those capabilities are increasingly relevant as businesses deploy cloud-based applications and AI agents, although the company’s descriptions of product performance are its own claims.
The funding arrives amid continued investment in cybersecurity products built for cloud infrastructure and AI workloads. For Upwind, the challenge will be converting investor confidence and reported growth into durable customer adoption in a competitive market. The Upwind $400 million funding round gives the company additional capital to expand its products, but the investment alone does not establish how its market position will develop.
