San Francisco-based cybersecurity startup Upwind has secured $400 million in a Series C funding round, pushing its valuation to $3.8 billion. The investment, led by Bessemer Venture Partners with support from existing backers Greylock Partners and Craft Ventures, arrives just nine months after the company raised $250 million at a $1.5 billion valuation.
The successful capital raise follows a period of intense corporate maneuvering. Reports indicate that the funding process was nearly derailed by an acquisition attempt from the publicly traded observability firm Datadog. Ultimately, Upwind’s leadership opted to remain independent after determining that Datadog’s offer did not provide a sufficient premium over the valuation established by its venture capital partners.
Rapid Growth and Market Valuation
Founded four years ago by Amiram Shachar—who previously sold his cloud management startup, Spot.io, to NetApp for $450 million—Upwind has seen significant financial momentum. The company specializes in "runtime" security, a method that identifies and remediates vulnerabilities and active threats within live cloud services in real time.
Financial indicators suggest the company is scaling quickly to meet the rising demand for AI-driven security solutions. Upwind has been adding between $20 million and $30 million in annualized recurring revenue (ARR) each quarter, with projections placing its year-end ARR at approximately $90 million. The $3.8 billion valuation represents a multiple of more than 40 times its forecast ARR. While this is a high valuation, it remains notably lower than the 80x ARR multiple achieved by other cybersecurity firms like Cyera earlier this year.
Strategic Independence in a Competitive Landscape
By rejecting the acquisition offer, Upwind is signaling confidence in its long-term growth trajectory. Industry analysts, including Tomasz Tunguz of Theory Ventures, have identified cybersecurity as a primary sector for AI software investment, following the initial waves of AI-driven coding and customer support tools.
Despite the decision to stay independent, the company remains a subject of acquisition interest. Given the current market climate, where public offerings for cybersecurity firms have been relatively rare, industry observers suggest that an eventual sale remains a probable long-term outcome for the startup. For now, Upwind continues to operate as a standalone entity, leveraging its fresh capital to expand its footprint in the cloud security market.
