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Upwind raises $400 million Series C at $3.8 billion

3 sources · 3 articlesFirst reported Updated ()1
What's new

October 28: TechCrunch reports a source saying Datadog did not bid above the $3.8 billion valuation, so Upwind stayed independent, and projects about $90 million year-end ARR.

Merged summary · x-ai/grok-4.7 · rewritten as coverage arrivesSummaries by Vani AI

Upwind closed a $400 million Series C at a $3.8 billion valuation after disputed Datadog acquisition reports.

Upwind Security raised a $400 million Series C led by Bessemer Venture Partners at a $3.8 billion valuation, lifting total funding above $800 million less than nine months after a $250 million Series B. The San Francisco firm, founded in 2022 by Amiram Shachar, says the money will fund engineering, including AI Sensors, scanners and an AI Labs effort. Help Net Security says existing investors all participated and Canapi joined; SecurityWeek also names TCV, and TechCrunch names Greylock and Craft. Acquisition accounts conflict: SecurityWeek says The Information reported a nearly $4 billion Datadog offer that CTech disputed, while a person familiar told TechCrunch that Datadog did not bid above $3.8 billion and Upwind stayed independent. That source projects about $90 million in year-end ARR.

Key facts
  • Round values Upwind at $3.8 billion and lifts total funding above $800 million.
  • A $250 million Series B closed less than nine months earlier.
  • TechCrunch source projects about $90 million year-end ARR, rising $20 million to $30 million quarterly.
  • SecurityWeek names customers Siemens, Roku and Nubank.
  • Shachar previously sold Spot.io to NetApp for $450 million.
  • Planned work includes AI Sensors, agent scanners and AI Labs.
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Timeline

dated events in the reporting · oldest first
  1. Oct 28, 2026Upwind announces $400 million Series C · Help Net Security

What each outlet adds

beyond the shared facts
  • Help Net SecurityNames Canapi, product plans, Blue Red Green agents, and AI Labs.
  • SecurityWeekStates $3.8 billion valuation, customers, TCV, and disputed Datadog offer.
  • TechCrunchSource says no bid above valuation; cites year-end ARR and Greylock and Craft.
Vendors
UpwindDatadogUpwind Security
Organizations
Bessemer VenturesGreylock PartnersCraft VenturesNetAppBessemer Venture PartnersCanapi VenturesDatadog
Countries
United States

Coverage

oldest first · one row per article · UTC
  1. · 2d ago Help Net SecurityFirst report

    Upwind raises $400 million Series C for cloud and AI security

    Bessemer led the round less than nine months after a $250 million Series B, lifting total funding above $800 million.

  2. · 2d ago SecurityWeek

    Upwind Security raises $400 million Series C at $3.8 billion valuation

    The round comes nine months after a $250 million raise and follows disputed reports that Datadog offered nearly $4 billion to acquire the startup.

  3. · 1d ago TechCrunch · Security

    Upwind raises $400 million Series C, declines Datadog offer

    Nine months after a $250 million round, the startup is valued at $3.8 billion with about $90 million forecast ARR.