Impulse Space, an in-space mobility leader, announced it has raised $300 million in a Series C funding round. The funding round was led by Linse Capital and it brings Impulse’s total capital raised to $525 million. The round also included participation from new investor DFJ Growth, as well as returning investors Valor Equity Partners, Founders Fund, Lux Capital, RTX Ventures, DCVC, Airbus Ventures, Spring Tide, First Principles Group, Balerion Space Ventures, Tamarack Global, and Trousdale Ventures.
Since its founding in 2021, Impulse quietly built a track record of technical achievement, successful missions, and commercial momentum. Headed by Tom Mueller, a SpaceX founding member and the architect behind the Merlin engine family, Impulse is powered by a veteran team with a proven history of designing, testing, and delivering. And this funding raise is more than capital as it affirms Impulse’s emergence as the frontrunner for in-space mobility.
In less than four years, Impulse Space has already:
1.) Built and flown Mira, a high-thrust and highly maneuverable space vehicle for payload hosting and deployment on two successful customer missions.
2.) Executed what is believed to be the two largest orbital maneuvers ever by a nitrous-based propulsion system.
3.) Secured over 30 commercial and government contracts.
4.) Developed Helios, which is a high-energy kick stage to rapidly deliver payloads to MEO, GEO, and beyond (on track to fly in 2026).
5.) Launched a roadmap for a customizable GEO Rideshare Program, debuting in 2027.
How the funding will be used: With over 30 signed contracts (totaling nearly $200 million in value) and growing interest from every sector, Impulse will use the funding to scale and execute a backlog of missions that require faster, more flexible, and more cost-effective in-space mobility.
This Series C funding round will also accelerate Impulse’s mission in three key ways:
1.) Growing headcount across engineering, manufacturing, and mission operations while continuing to integrate for cost, quality, and schedule control vertically.
2.) Advancing R&D to expand mission profiles—including integrating electric propulsion for long-duration missions—and develop new vehicles for national security and NASA applications.
3.) Scaling production on Mira and Helios to meet a growing backlog of demand.
KEY QUOTES:
“We’ve proven that we can build fast and fly successfully. Now, the market is demanding more. This raise helps us scale production and technical capabilities to meet that demand head-on.”
“Achieving a true space age is going to require new levels of in-space mobility to move payloads quickly and precisely, both within and between orbits. That capability is what we’re building at Impulse.”
Tom Mueller, CEO and founder
“Impulse is tackling one of the most technically demanding challenges in aerospace with a speed and precision we rarely see. Their vertically integrated approach, proven track record, and ability to execute quickly in this market give them a real advantage. We’re excited to support their vision as they build the infrastructure that will power the next generation of space missions.”
Bastiaan Janmaat, Managing Partner at Linse Capital
