Key facts
- Impulse Space raised $500 million in Series D funding.
Impulse Space, an orbital transfer vehicle startup founded by SpaceX's first employee Tom Mueller, has raised $500 million in Series D funding at a $4.26 billion valuation. The round was co-led by 137 Ventures and Banner VC, with participation from existing investors. The company develops spacecraft for in-orbit payload delivery and propulsion systems.

Impulse Space, a startup focused on in-orbit spacecraft delivery and servicing, announced it has secured $500 million in Series D funding, bringing its valuation to $4.26 billion. The round, co-led by 137 Ventures and Banner VC, underscores a surge in investor confidence in the commercial space sector, particularly in companies building infrastructure beyond traditional rocket launches. Founded by SpaceX's first employee, Tom Mueller, Impulse Space develops orbital transfer vehicles like its Mira spacecraft and the upcoming Helios vehicle, aiming to significantly reduce the time it takes for satellites to reach their final orbits after launch. This increased investment activity is partly attributed to SpaceX's recent filing for a potentially record-breaking IPO, which has amplified interest in related space startups.
The significant funding round for Impulse Space highlights growing investor appetite for space infrastructure companies, driven by the potential for new revenue streams in orbital logistics and servicing, and boosted by the anticipation of SpaceX's IPO.