Impulse Space
In-space transportation and orbital transfer vehicle developer founded by ex-SpaceX engineers
Defense & Space
📍 El Segundo, CA
Founded 2021
Current Valuation
$1.2B
as of 2025-Q3
UNICORN
Impulse Space builds orbital transfer vehicles (OTVs) and in-space propulsion for last-mile delivery between orbits. Founded by SpaceX co-founder Tom Mueller, who designed the Merlin engine. Operating multiple Mira spacecraft and developing the Helios high-energy kick stage.
Company Profile
Last Round
Series C — $295M (Jun 2025) · Lead: Linse Capital
IPO Status
no imminent plans
Founders & Key People
Tom Mueller
Investors
Linse Capital · Founders Fund · RTX Ventures · DCVC · Lux Capital
Products
- Mira (OTV)
- Helios (kick stage)
Competitors
Momentus · D-Orbit · Astroscale
SpaceDefenseOrbital TransferFounders Fund Backed
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of 2025-Q3. Refreshed quarterly.