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Impulse Space
In-space mobility spacecraft and propulsion for post-launch orbital transport
About Impulse Space
Impulse Space is a Redondo Beach, California company building in-space mobility spacecraft and propulsion so payloads can move quickly and affordably after launch. Founded by SpaceX veteran Tom Mueller and led with President and COO Eric Romo, Impulse’s fleet includes flight-proven Mira for precision maneuvering and rendezvous/proximity operations, Helios high-energy kick stage aimed at first flight in 2027, and Caravan rideshare access to higher-energy orbits, plus propulsion lines Saiph, Deneb and Rigel. The company has flown multiple missions, cites hundreds of millions of dollars in customer contracts, and operates facilities in Redondo Beach, Boulder, Washington D.C. and Mojave. In June 2026 Impulse raised a $500 million Series D co-led by 137 Ventures and BANNER VC with Founders Fund, Lux Capital and Linse Capital; in September 2026 it announced a $308 million Series D extension, bringing the Series D to $808 million as backlog grew. Sources: Impulse Space 3 Jun 2026; Reuters / GlobeNewswire Sep 2026.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2021
- Headquarters
- Redondo Beach, United States
- Employees
- 463
- Open positions
- 109
- Dealroom signal
- 60.7/100
- Sector
- Space, Core AI, Space Tech, Verified Unicorns and $1B Exits, Space Transportation, In-Space Transportation, Space Upstream, AI Applications, NIF defense security and resilience
- Technology
- Artificial Intelligence, Hardware, Deep Tech, Machine Learning
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES DOther financing | Jun 2026 | $500M | $4.3B | Founders Fund · Banner VC · Lux Capital · Linse Capital | ↗ |
| SERIES COther financing | Jun 2025 | $300M | $1.2B | Founders Fund · DFJ Growth · Airbus Ventures · Linse Capital | ↗ |
Growth signals
Latest recorded traffic for Impulse Space is 53K monthly website visits, up 71% over the last three months. Impulse Space's team grew 48.4% over the past year.
Open positions
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed3 investors entered at this stage
Lux Capital
Founders Fund
SpaceWERX
Series A15 investors entered at this stage
Airbus Ventures
Space Capital
RTX Ventures
137 Ventures
Alumni Ventures
Trousdale Ventures
Tamarack Global
Spring Tide Capital
Silent Ventures
Balerion Space Ventures
First Principles Group
Island Green Power
DCVC
Elysium Venture Capital
Overmatch Ventures
Series B and later4 investors entered at this stage
Linse Capital
DFJ Growth
Valor Equity Partners
Banner VC
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Impulse Space on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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