Upwind Security has raised $300 million in new funding at a valuation of approximately $3.8 billion. The round was led by Bessemer Venture Partners and TCV, with participation from Craft Ventures, Salesforce Ventures, Greylock, Cyberstarts, Leaders Fund, and Alta Park Capital. The financing arrives less than eight months after Upwind's previous round and more than doubles its valuation, reflecting strong investor demand for independent cloud security platforms.
Rapid Valuation Growth
The latest investment follows a $250 million Series B completed in January 2026, which initially valued the company at $1.5 billion before a subsequent Salesforce Ventures investment pushed that figure to roughly $1.6 billion. Upwind was valued between $800 million and $900 million in late 2024, making its current $3.8 billion valuation a more than fourfold increase. The company has now raised more than $680 million in total funding, underscoring rapid investor confidence in its growth trajectory.
Runtime-First Cloud Security
Upwind was founded in 2022 by Amiram Shachar and his cofounders from Spot.io, the cloud cost management company acquired by NetApp for $450 million in 2020. The startup develops a Cloud-Native Application Protection Platform that prioritizes runtime monitoring of live operating environments over static scans. This runtime-first approach helps security teams identify the vulnerabilities that truly matter and reduce the high volume of alerts generated by conventional tools.
Expanding Into AI Security
The company has also expanded its technology to address security risks tied to artificial intelligence. In collaboration with Nvidia, Upwind conducted research showing that its platform could detect malicious prompts targeting large language models with approximately 95 percent precision while maintaining real-time performance. The work focuses on threats such as prompt injection and data exfiltration, which have become critical concerns as enterprises deploy AI systems more broadly.
Commercial Acceleration
Upwind's commercial growth has accelerated significantly over the past year. The company ended 2025 with less than $20 million in revenue and is now estimated to have reached $50 million to $60 million in revenue so far in 2026. It is targeting $100 million in annual recurring revenue by the end of the year, supported by customers that include Siemens, Peloton, and Roku.
Market Tailwinds
The company is gaining momentum amid a shifting competitive landscape. Google's $32 billion acquisition of Wiz removed one of the most prominent independent cloud security providers from the market, creating new opportunities for competitors. Upwind has strengthened distribution relationships with Amazon and Microsoft, helping it reach enterprise customers seeking alternatives and contributing to its rapid revenue acceleration.
Investor Support and Strategic Backing
Bessemer Venture Partners and TCV led the round, while Craft Ventures, Salesforce Ventures, Greylock, Cyberstarts, Leaders Fund, and Alta Park Capital also joined. Penny Jar Capital, the investment firm backed by NBA star Stephen Curry, is among Upwind's existing investors. The mix of venture, growth, and strategic capital providers highlights the broad support behind the company's platform and market position.
Upwind's new funding round positions it as one of the fastest-growing independent vendors in the cloud security market. Its runtime-first architecture and expanding AI security capabilities address urgent enterprise needs for more precise risk prioritization. With a $3.8 billion valuation, rising annual recurring revenue, and strong distribution ties, Upwind is emerging as a significant contender in the next wave of cybersecurity infrastructure.