Sierra Space Corporation is a privately held aerospace and space technologies company headquartered in Louisville, Colorado, with additional facilities in Colorado, Wisconsin, Florida, North Carolina and a testing site at the Marshall Space Flight Center in Alabama. The company makes spaceflight hardware for various applications across the industry.
Subscribe to see Sierra Space’s full profile → the full roster, investors in every round, weekly hiring history and every corporate event
Sierra Space is an aerospace company headquartered in United States. It has raised at least $3.7B across the 5 funding rounds on record. Its most recent funding round, Series C, raised $550M in March 2026. Xcout tracks 13 named people at Sierra Space, including Dan Jablonsky (chief executive officer). Xcout recorded 2 job postings from Sierra Space in the last 90 days.
7 more named people on record for Sierra Space, with roles, board committees and tenure — see the full roster →
At least $3.7B raised across the 5 rounds on record. The 4 most recent:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series C | $550M | 5 named | |
| Series C | $290M | 1 named | |
| SEC Form D filing | $19.1M | — | |
| SEC Form D filing | $1.4B | — |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Xcout recorded 2 job postings from Sierra Space in the last 90 days, from a hiring record Xcout has kept since June 2026.
The weekly hiring trend, the roles and locations behind it — see Sierra Space's hiring signals →
A few of Sierra Space's closest competitors — see the full list of competitors and alternatives →
Ursa Major designs and manufactures aerospace and defense systems, including hypersonics, solid rocket motors, and space propulsion technologies. Utilizing additive manufacturing and modular architectures, the company serves the defense and aerospace sectors by providing scalable, American-made propulsion systems and all-up rounds for various missions.
Phase Four, Inc. is an aerospace company founded in 2015 that operates in California and develops propulsion technologies.
Stratolaunch is an aerospace company that operates the Roc, a large carrier aircraft designed for air-launching spacecraft and test vehicles. It develops and provides hypersonic flight-test services and related technologies for government and commercial customers.
Virgin Galactic Holdings, Inc., an aerospace and space travel company, focuses on the development, manufacture, and operation of spaceships and related technologies. It engages in the design and development, manufacturing, ground and flight testing, spaceflight operation, and post-flight maintenance of spaceflight systems for private individuals, researchers, and government agencies. The company is headquartered in Tustin, California.
Initium Aerospace is an aviation and aerospace component manufacturing company headquartered in San Francisco, California. It specializes in space research, technology, and aerospace engineering solutions.
Stellar Solutions is an aerospace and systems engineering company that provides end-to-end space engineering services, strategic expertise, and program management for government and industry clients. The company handles mission requirements spanning concept development, design, testing, launch, and operations, as well as strategic planning and wargaming. Its services are tailored to address critical engineering challenges and defense needs across space and all-domain environments.
Funding rounds, acquisitions, new executives, launches and expansions, each with a two-line summary and a link to the source. One short email a day, only when there is news.
Free: up to 5 companies, daily. Subscribers also follow whole sectors and saved filters (M&A in Israel, AI funding…), get instant alerts, in-app notifications and signed webhooks, and open the full profile behind every name. Subscribe →
Post the link and the card appears automatically — each network fetches the image itself.