Cowboy Space

Cowboy Space Corporation (fka Aetherflux) is building a power grid in outer space for artificial intelligence.

Latest funding

$275M Series B+ · May 11, 2026

Total raised: $325M across 2 sourced rounds

Website: cowboyspace.com.

LinkedIn: linkedin.com.

Categories: AI infrastructure and compute Climate and energy Developer tools and cloud.

Sectors: Aerospace, AI Infrastructure, Artificial Intelligence (AI), Energy.

Stage: Series B+.

Based in: San Mateo, United States.

Founded: 2023.

Total raised: $325M in 2 sourced rounds.

Last round: May 11, 2026 · 188 days ago.

Headcount: 101–250 employees.

On Recent Funding since: Sep 29, 2026.

Signals

Website registeredSep 6, 2009 (17 years old)

About Cowboy Space

Using an integrated system of satellites and rockets, we will send high-performance compute and optical data transmission to Low Earth Orbit.

TIMELINE · MONEY RAISED

Raised $325M in 2 sourced rounds

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

Date	Round	Amount	Lead	Source
May 11, 2026	Series B+	$275M	IIndex Ventures	techcrunch.com
Oct 15, 2025	Series A	undisclosed	—	fundraisingfox.com
Apr 2, 2025	Series A	$50M	IIndex Ventures	techcrunch.com

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/cowboy-space (get a free API key).