Impulse Space
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Investors
Founders
About
Impulse Space is a Redondo Beach, California-based in-space mobility infrastructure company founded in September 2021 by Tom Mueller — the SpaceX propulsion-engineering veteran widely credited with developing the engines that propelled SpaceX to the top of the launch industry 123. President and COO Eric Romo and COO Barry Matsumori (ex-SpaceX, Virgin Orbit) round out the leadership team; the company builds maneuverable orbital transfer vehicles and in-space propulsion systems to move payloads between orbits and to extend satellite lifetimes 123. The $500M Series D announced June 2, 2026 was co-led by 137 Ventures and BANNER VC at a $4.26B post-money valuation, with participation from Founders Fund, Lux Capital, and Linse Capital; the round brings total funding above $1B and will fund headcount expansion of up to 200 new employees, focused on engineering hires rather than AI automation 123.
Funding History
| Date | Round | Amount | Lead | Co-investors |
|---|---|---|---|---|
| 2026-06-02 | Series D (at $4.26B post-money val) | $500M | 137 Ventures, BANNER VC | Founders Fund, Lux Capital, Linse Capital 123 |
What Investors Say
No independently sourced investor quotes found at this time.
What Founders Say
“When it comes to solving engineering problems in the real world, deep learning models aren’t quite ready for prime time.”
— Eric Romo, President & COO, Impulse Space 1
Sources
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TechCrunch, “Rocket engine startup Impulse raises $500 million to hire people, not AI,” June 2, 2026. Accessed June 2026. https://techcrunch.com/2026/06/02/rocket-engine-startup-impulse-raises-500-million-to-hire-people-not-ai/↩↩↩↩↩
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GlobeNewsWire, “Impulse Space Raises $500M Series D to Build In-Space Mobility Infrastructure for the Space Economy,” June 2, 2026. Accessed June 2026. https://www.globenewswire.com/news-release/2026/06/02/3305111/0/en/impulse-space-raises-500m-series-d-to-build-in-space-mobility-infrastructure-for-the-space-economy.html↩↩↩↩
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SpaceNews, “Impulse Space raises $500 million,” June 2, 2026. Accessed June 2026. https://spacenews.com/impulse-space-raises-500-million/↩↩↩↩