Sierra Space Corporation has announced a $550m equity investment led by LuminArx Capital Management, with participation from existing investors, valuing the company at $8bn following the funding round.
The new capital is expected to support Sierra Space’s national security space initiatives, enabling the company to expand its production capacity and continue developing advanced solutions for government and defence customers. The investment is also intended to strengthen the company’s position to secure additional contracts, build on existing technologies, and explore growth opportunities beyond its current satellite and spacecraft programs.
Fatih Ozmen, Board Chair, Sierra Space, said: “Since 2021, Sierra Space has undergone a strategic transformation, deploying trusted and responsive solutions to more closely align with the needs of its national security customers. Sierra Space has sharpened its focus toward national security customers by advancing solutions that strengthen American space and defense leadership, positioning the company for its next phase of growth. We appreciate the confidence shown by our new equity investor, LuminArx Capital, whose thoughtful, agile approach to capital solutions, positions the company strongly for the future.”
Min Htoo, Co-founder and Chief Investment Officer, LuminArx Capital, added: “We are excited to partner with Sierra Space to accelerate the growth of a standout leader in the defense-tech space market. Among the many companies we’ve evaluated in the sector, Sierra Space distinguishes itself through its team, technical expertise, and execution history. Fatih and Eren have built their businesses with a rare combination of humility, integrity, and deep sense of responsibility to the country—values that are clearly embedded in Sierra Space. We look forward to growing our partnership with Sierra Space as they scale their mission-critical national security offerings and build their enduring legacy.”
Sierra Space’s investors include General Atlantic, Coatue, Moore Strategic Ventures, and Andalusian Private Capital, among others.
Dan Jablonsky, Chief Executive Officer, Sierra Space, commented: “Sierra Space is at an exciting inflection point. Investor confidence, customer demand, and operational readiness are aligned, and that alignment is powering the intentional scaling of our business. Our focus is on expanding our proven defense and civil capabilities and delivering mission-critical solutions with the speed, reliability, and consistency our customers know us for.”
Sierra Space has participated in more than 500 missions and brings over three decades of spaceflight heritage. In recent years the company has secured major contracts, including a $450m award to build more than four satellites for a national security customer and a contract under the Space Development Agency Tranche 2 Tracking Layer programme with a potential value of up to $740m to produce 18 missile warning, tracking and fire-control satellites.
The company has also received contracts from all eight space procurement agencies across the US Department of Defense and the intelligence community. Last year it completed a new power station facility dedicated to manufacturing high-rate solar arrays for critical satellite missions.
In 2025, Sierra Space achieved additional milestones, including completing the Critical Design Review for two major national security satellite programmes and finalising manufacturing and assembly for the Dream Chaser spaceplane, which is scheduled for a demonstration flight in late 2026.
Moelis & Company acted as the exclusive placement agent for Sierra Space on the Series C funding transaction.
Add Comment