Upwind’s Reported $400M Raise Highlights AI-Security Funding Momentum

New coverage reports Upwind raised a $400M Series C at a $3.8B valuation, more than doubling its January valuation, with $830M total funding, and walked away from a Datadog acquisition approach. The reported $90M year-end ARR implies a valuation above 40 times forecast ARR, but figures are sourced to people familiar with the company rather than audited disclosures; an earlier report cited a $300M round, leaving the size discrepancy unresolved.