California-Based Impulse Space Raises $308M in Series D Extension Funding

The round included 137 Ventures, BANNER VC, DFJ Growth, Linse Capital, Lux Capital, and Valor Equity Partners.

The company will use the funding to support product development and team growth, while expanding its manufacturing capabilities and facilities.

What is Impulse Space?

Impulse Space develops spacecraft and propulsion systems that help operators move payloads between different orbits after launch.

Its current products include Mira, a spacecraft designed for precision maneuvering, Helios, a high-energy kick stage, and Caravan, a rideshare program.

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The company has also introduced Electra, an electric propulsion system that complements its existing chemical propulsion engines.

Together, these products are designed to provide greater flexibility for missions across different orbits.

How Much Funding Has Impulse Space Raised?

Impulse Space has raised $308 million in its Series D extension round.

The latest funding brings the total Series D funding to $808 million.

The source does not provide details of the company’s total funding across all rounds.

Who Invested in Impulse Space’s Series D Extension?

The Series D extension included 137 Ventures, BANNER VC, DFJ Growth, Linse Capital, Lux Capital, and Valor Equity Partners.

The source does not identify a lead investor for the extension round.

Why the Funding Matters

Impulse Space plans to use the new capital for ongoing product development and team growth.

The company will also expand its manufacturing capabilities and facilities.

The funding comes as Impulse Space continues to receive government contracts for its spacecraft and in-space mobility capabilities.

Who founded Impulse Space?

Impulse Space was founded in 2021 by Tom Mueller.

The company is headquartered in Redondo Beach, California.

Market and Business Growth

Impulse Space’s Helios spacecraft was selected for the U.S. Space Force’s National Security Space Launch Phase 3 Lane 1 contract, making the company the first upper-stage prime awarded a position in the program.

The company also received a $28 million contract extension from Space Systems Command’s Space Safari Office for the VICTUS SALO 2 and VICTUS SALO 3 missions. This builds on existing awards for its Mira spacecraft.

Mira has been flight-proven for precision maneuvering, while Helios is designed to transport payloads from low Earth orbit to higher orbits, including MEO, GEO, heliocentric, lunar and other planetary orbits.

What Happens Next?

Impulse Space plans to continue developing its in-space mobility products while expanding its team and manufacturing operations.

The company will also continue developing its spacecraft and propulsion systems as it works toward providing end-to-end mobility solutions for missions across different orbits.

“This continued support from our investors strengthens our ability to build the systems that will unlock the space economy,” said Eric Romo, President and COO of Impulse Space. “Over the past year, we’ve more than doubled our headcount and expanded our footprint across the country, building the team and capabilities needed to enable faster, more flexible movement in space for our customers.”

“We’re building a team of top talent across disciplines to deliver on very strong industry demand. This funding supports our ongoing growth across people, products, and facilities,” said Tom Mueller, founder and CEO of Impulse Space.

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