Sierra Space raises $550M in investment capital

LOUISVILLE — Fresh off of hiring a new leader, Sierra Space Corp. has closed a $550 million Series C fundraising round that values the Louisville aerospace company at $8 billion. 

“With this new capital, Sierra Space will be able to further focus on its national security space efforts through ongoing expansion of production capacity and continued development of differentiated solutions for its customers,” the company said in a Thursday news release. “The investment better positions Sierra Space to secure additional contracts, leverage existing technologies, and pursue growth opportunities beyond its current satellite and spacecraft mission programs.”

The Series C was led by LuminArx Capital Management.

“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,” Sierra Space board chair Fatih Ozmen said in the release. “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.”

Sierra Space hired Dan Jablonsky last month as its new CEO. The company has been led on an interim basis since early 2025 by Ozmen, CEO of Sierra Nevada.Jablonsky takes the helm as Sierra Space — which is developing technologies such as satellite-navigation platforms and solar arrays for the military, the Dream Chaser space plane and the Large Integrated Flexible Environment (LIFE) Habitat, a modular, three-story commercial habitation, business and science platform — is significantly increasing its Colorado manufacturing operations with new plants in Centennial and Broomfield.

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