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Impulse Space

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In-space mobility spacecraft and propulsion for post-launch orbital transport

Redondo Beach, United StatesFounded 2021Space
Valuation $1–2.5B Last recorded · 2026
Headcount 500–1k Current team size
Total funding $1–2.5B Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Impulse Space and the history behind them.

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 data

At 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

Funding history

7 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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 ↗
Showing the latest 2 of 7 recorded eventsBook a demo for the full funding history →

Growth signals

Impulse Space website traffic

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.

Latest monthly visits53K 3-month web change+71% 1-year team growth+48.4%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

22 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed3 investors entered at this stage

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

Team profiled 14 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
5 countries with
team presence
🇺🇸 United States98.8%
🇸🇬 Singapore0.3%
🇫🇷 France0.3%
🇸🇦 Saudi Arabia0.3%
🇮🇳 India0.3%
5 countries shown

Market sentiment

Posts on X, past 7 days

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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