TLDR

  • Sierra Space wrapped up a $550 million Series C funding round, giving the firm an $8 billion valuation
  • LuminArx Capital Management headed the round, with current investors taking part
  • The funds will boost production capabilities and advance defense and intelligence-related solutions
  • Sierra Space has secured contracts totaling up to $1.19 billion for national security initiatives
  • The Dream Chaser spaceplane has finished all its manufacturing milestones, and a demonstration flight is scheduled for late 2026

Sierra Space, a defense and space tech firm based in Colorado, has secured $550 million via a Series C funding round. This transaction gives the company an $8 billion valuation.

LuminArx Capital Management, a global alternative investment firm, led the round. Current investors including General Atlantic, Coatue, Moore Strategic Ventures, and Andalusian Private Capital also joined in.

This pushes Sierra Space’s total capital raised since 2021 to more than $2 billion. The company’s previous funding round was a $290 million Series B in 2023, which gave it a $5.3 billion valuation.

CEO Dan Jablonsky stated that the company is concentrating on expanding its national security capabilities. He pointed to investor trust, customer demand, and operational preparedness as coordinated factors fueling the company’s growth.

Sierra Space designs and manufactures satellites, spacecraft, and space systems for U.S. government and commercial clients. It has participated in over 500 missions and boasts more than 30 years of spaceflight experience.

Major Government Contracts in Place

The firm has a $450 million contract to construct over four satellites for a national security client. Additionally, it has a Space Development Agency contract valued at up to $740 million to build 18 missile detection and tracking satellites.

Sierra Space has agreements with nearly all eight space procurement agencies in the Department of Defense and Intelligence Community. These contracts support its rising valuation and investor appeal.

The new funds will be utilized to increase production capacity. They will also finance ongoing development of solutions for defense and intelligence operations.

Min Htoo, co-founder of LuminArx Capital, noted that Sierra Space stood out from numerous companies assessed in the sector. He highlighted its team, technical know-how, and proven track record of execution.

Board Chair Fatih Ozmen stated that the company has undergone a strategic shift since 2021. He added that it has intensified its focus on national security clients.

Dream Chaser Spaceplane on Track

In addition to satellites, Sierra Space is developing the Dream Chaser, a reusable spaceplane. It is engineered to transport cargo—and eventually crew—to low Earth orbit.

In 2025, the company finished all manufacturing and assembly milestones for the vehicle. A demo flight is scheduled for late 2026.

Sierra Space also completed Critical Design Reviews for two key national security satellite programs last year. It wrapped up construction of a new power station facility that produces high-rate solar arrays for satellite missions.

The company reports it is now well-positioned to secure more contracts and pursue growth beyond its existing programs. Moelis & Company exclusively arranged the Series C round.