Ursa Major
Ursa Major is a Propulsion & Manufacturing company founded in 2015 and based in Berthoud, United States. It has raised $285M in total funding, most recently a Series E in 2025 at a $600M valuation.
Ursa Major designs and manufactures rocket engines and hypersonic propulsion systems for defense, commercial space, and missile applications. Raised $138M Series D in Jan 2024; Hadley engine powers hypersonics and tactical missiles; expanding production in Colorado; customers include DoD and NASA.
The only venture-backed, independent US manufacturer of rocket engines at scale, critical for supply chain resilience and hypersonic weapons.
ursamajor.com ↗·Propulsion & Manufacturing·
United States·private 
