Upwind Secures $400M at $3.8B Valuation After Rejecting Datadog Bid

WHO:

TechCrunch - Upwind is a cloud security startup.

Techmeme - Upwind Security is an AI and cloud cybersecurity startup based in San Francisco.

Techmeme - Bessemer led Upwind Security’s funding round.

Techmeme - Marissa Newman of Bloomberg is identified as the report’s author.

WHAT:

TechCrunch - Upwind raised $400 million in a Series C at a $3.8 billion valuation.

TechCrunch - Upwind walked away from a Datadog acquisition offer, choosing to raise funding rather than sell itself for the same $3.8 billion price.

Techmeme - Upwind Security raised $400 million at a $3.8 billion valuation.

Techmeme - Upwind Security had raised $830 million in total funding.

WHERE:

Techmeme - Upwind Security is based in San Francisco.

WHY:

TechCrunch - Upwind pursued a Series C instead of selling itself after receiving Datadog’s acquisition offer.

HOW:

TechCrunch - Upwind raised the funding through a Series C round.

Techmeme - Bessemer led the $400 million funding round.

(UPDATED October 29, 2026 00:01 UTC)

San Francisco-based cloud cybersecurity startup Upwind raised $400 million in a Series C round at a $3.8 billion valuation, bringing its total funding to $830 million. Bessemer led the round. Upwind chose to raise the money rather than accept Datadog’s acquisition offer, which valued the company at the same $3.8 billion.