Mira
Spacecraft for hosting, deploying, and maneuvering payloads in orbit.
Explore MiraAerospace & defense / COMPANY INTELLIGENCE
Impulse Space
Builds spacecraft and propulsion systems that move payloads between orbits after launch, including the Mira vehicle and Helios kick stage.
01 / THE BUSINESS
How Impulse Space creates value.
In-space transportation systems move payloads between orbits and support missions after launch. Revenue depends on mission wins, delivery reliability and spacecraft production economics.
SectorAerospace & defense
Founder coverage1 profile
Research checkedSep 18, 2026
EXPLORE THE BUSINESS FIRSTHAND
Products, platforms & programs.
Explore what Impulse Space builds through its official product and program pages.
Helios
In-space transportation vehicle designed to move payloads between orbits.
Explore HeliosOfficial product and program links; no affiliate commissions are attached to these links. Availability and eligibility are determined by the company. Research programs are not necessarily commercially available products.
02 / PEOPLE BEHIND THE COMPANY
Meet the builders.
Founder
Tom Mueller
Founded Impulse Space after a career developing rocket propulsion. The company focuses on moving payloads after they reach space.
Explore founderSelected founders; historical founding roles are distinct from current management positions.
03 / CAPITAL & OWNERSHIP
Follow the financing.
Selected disclosed events, newest first. Announcement values describe that transaction and date; they are not current share prices. Debt, equity and secondary transactions are identified separately.
- Equity
Series D extension
Disclosed amount$308M extensionNot disclosedNot disclosedNamed participants: 137 Ventures · BANNER VC · DFJ Growth · Linse Capital · Lux Capital · Valor Equity Partners
The company says the extension brings the combined Series D to $808M; do not add that total to the extension again.
Read the announcement
Explore the named investors.
Names refer to the cited transactions. They do not establish current ownership, ownership percentages, or endorsement of this website.
04 / IN THEIR OWN WORDS
Watch. Listen. Form your view.
A direct interview has not yet been verified for this profile. The company’s official materials are linked below.
Interviews reflect the speaker’s perspective at publication. Company statements are not independent verification.
05 / EDITORIAL ANALYSIS
The opportunity. The open questions.
Our interpretation of the business model and cited sources, not a valuation or a recommendation.
The case to investigate
- More spacecraft in orbit may create repeat demand for transportation.
- Mission performance can establish credibility in a demanding market.
Pressure-test the thesis
- Mission failures can delay revenue and damage customer confidence.
- Spacecraft development and inventory consume capital.
What to watch next
01
Completed missions and delivery reliability.
02
Backlog conversion into collected revenue.
03
Production capacity relative to committed missions.
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YOUR RESEARCH WORKSPACE
Keep the questions that matter.
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06 / RESEARCH TRAIL
Go straight to the source.
Series D extension announcementimpulsespace.com · Sep 16, 2026Company mission and facilitiesimpulsespace.com
Research checked Sep 18, 2026. Selected public disclosures, not a complete capitalization table or securities-filing search. Missing information is left unconfirmed. No investment availability or IPO date is implied.