Company intelligence
As of August 5, 2026, WindBorne Systems has raised at least $37M in equity across 1 sourced funding round.
Is something wrong on this page?
| Date | Round | Amount | Valuation | Lead investors | Source |
|---|---|---|---|---|---|
| Aug 5, 2026 | Funding round | $37M | — | — | WindBorne SystemsPulse story |
Equity only. “Equity raised” above sums the rounds with a dated, linked source; rumored rounds, tender offers and secondary sales are listed but not counted, and debt financing is listed separately.
The U.S. Air Force awarded WindBorne Systems a sole-source contract worth up to $49 million for atmospheric data from its fleet of autonomous weather balloons, the startup's largest deal yet.
WindBorne Systems raised $37M for its balloon-based atmospheric sensor network, selling proprietary weather data to forecasters and insurers who say government satellite and balloon coverage has thinned in the wrong places.
WindBorne Systems, which raised $37M at a $250M valuation earlier this year, is now testing whether AI weather forecasts accurate enough to beat government agencies can also be a real business, not just a research feat.
WindBorne Systems has raised at least $37M in equity across 1 sourced funding round tracked by Value Add VC. The most recent was a $37M funding round in August 2026, reported by WindBorne Systems. Debt financing, tender offers and secondary sales are not counted.
WindBorne Systems is headquartered in Redwood City, California, USA, according to SEC EDGAR Form D.
Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.
