Sierra Space
Sierra Space is a private U.S. defense-tech space company that builds reusable spaceplanes, inflatable habitats, small satellites, solar arrays, and rocket engines for U.S. national security and NASA customers across all eight DoW/IC space procurement agencies.
- Company typePrivate
- Founded2021
- HeadquartersLouisville, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Sierra Space does
Sierra Space is a privately held U.S. defense-tech space company founded in 2021 by Eren and Fatih Ozmen as a spinout of Sierra Nevada Corporation (SNC), headquartered in Louisville, Colorado. The company builds a vertically integrated portfolio of space hardware and software spanning reusable spaceplanes (Dream Chaser Tenacity and the Shooting Star cargo module), inflatable space habitats (the LIFE platform and the Orbital Reef commercial station with Blue Origin), a three-bus small-satellite family (Eclipse Horizon, Velocity, and Titan), AI-enabled multi-domain command-and-control software (Sierra Black OS), patented Surface Mount Technology (SMT) solar arrays, and a VORTEX family of hybrid and cryogenic rocket engines. The technology stack is anchored by a 30+ year flight heritage inherited from SNC, with more than 4,000 space systems delivered and 500+ missions supported at 100% subsystem operational success.
The company serves primarily U.S. federal customers, with contracts awarded across all eight space procurement agencies within the Department of War and the Intelligence Community, plus NASA. Cornerstone awards include a $740 million (maximum potential) SDA Tranche 2 Tracking Layer contract for 18 missile warning satellites, a $450 million National Security satellite award, the NASA CRS-2 cargo resupply contract, a share of the $1.843 billion Space Force Andromeda IDIQ, and a NASA Lunar Logistics contract. International and commercial exposure is narrower, led by Mitsubishi Heavy Industries (JAXA docking components), Maxar (SMT solar array subcontract), and Texas A&M (aerospace medicine training alliance). Revenue comes from custom fixed-price multi-year government contracts, hardware sales of high-reliability spacecraft components, and a future "Space-As-A-Service" offering tied to Orbital Reef and LIFE; pricing is contract-based and not publicly disclosed.
Sierra Space has raised over $2 billion in private capital since inception, with a March 2026 Series C at an $8 billion post-money valuation, and has scaled to 1,001-5,000 employees across facilities in Colorado, Wisconsin, North Carolina, Virginia, and Florida, including the dedicated Victory Works satellite manufacturing plant (30+ satellites per year) and the new $45 million Power Station Technology Center for solar arrays. The company is publicly signaling IPO readiness through leadership professionalization (new CEO Dan Jablonsky from Maxar/Ursa Major, CSO Jeff Schrader from Lockheed Martin Space, SVP Government Relations Jill Pomeroy from Northrop Grumman) and is a reported IPO candidate as of 2025-2026.
Sierra Space firmographics
Firmographics- Name
- Sierra Space
- Legal name
- Sierra Space Corporation
- Website
- https://sierraspace.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- Sierra Space is a private U.S. defense-tech space company that builds reusable spaceplanes, inflatable habitats, small satellites, solar arrays, and rocket engines for U.S. national security and NASA customers across all eight DoW/IC space procurement agencies.
- Ownership category
- akta.pro rank
Sierra Space industry classification
Industry- Product category
- Commercial Spacecraft and Space Systems
- NAICS
- Guided Missile and Space Vehicle Manufacturing (336414), Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing (336419), Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing (336415)
- SIC
- Search, Detection, Navagation, Guidance, Aeronautical Sys (3812), Aircraft & Parts (3720), Guided Missiles & Space Vehicles & Parts (3760)
- akta.pro primary industry
- Spacecraft & Satellites (Civil/Commercial) (IMABACAB)
- akta.pro secondary industries
- Space Logistics & In-Orbit Servicing (Refueling, Tug, Debris Removal) (IMABACAM), Spacecraft Avionics, Flight Computers & Software (IMABACAI), Space Structures, Mechanisms & Thermal Control (IMABACAF)
Keywords
Where Sierra Space is headquartered
LocationHeadquarters
- HQ city
- Louisville
- HQ country
- United States
- HQ region
- North America
Offices6 records
Markets served
Sierra Space business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Technology or R&D, Infrastructure, Supply Chain, Operations, Marketing or Sales
Revenue model
- Government Defense Contracts: Long-term fixed-price government contracts for national security space missions. Cornerstone contracts include a $450M award to build more than four satellites for a National Security customer and an SDA Tranche 2 Tracking Layer contract with a maximum potential value of $740M to build 18 missile warning, tracking, and fire control satellites. Contracts awarded with essentially all eight space procurement agencies within the Department of War and Intelligence Community. Also secured share of $1.843B U.S. Space Force Andromeda IDIQ contract (April 2026).
- NASA Commercial Resupply Services (CRS-2): NASA contract for cargo delivery to the International Space Station using Dream Chaser spaceplane and Shooting Star cargo module. First Dream Chaser flight planned as a free-flyer demonstration in late 2026, then CRS-2 missions. Each mission delivers up to 8,000 lbs cargo upmass and 7,365 lbs cargo disposal with Shooting Star disposal on every mission.
- Spaceflight Hardware and Subsystems Sales: Sale of high-reliability satellite hardware and precision space mechanisms including thermal control systems, fluid components, propulsion systems, electrical power systems, pointing systems, spacecraft, and docking/berthing systems. Heritage of more than 4,000 space systems, subsystems, and components delivered with 100% operational success across 500+ missions.
- Commercial LEO Services and Space Station Infrastructure: Future revenue from "Space-As-A-Service" business model anchored by Orbital Reef commercial space station (with Blue Origin) and LIFE inflatable habitats. Includes in-space biomanufacturing, pharmaceutical research, semiconductor manufacturing, and payload services. Future revenue stream aligned with ISS replacement opportunities.
- International Space Agency and Prime Contractor Sales: Sale of spacecraft components and subsystems to international primes and agencies. Example: contract with Mitsubishi Heavy Industries to deliver Passive Common Berthing Mechanism, connection hatch, lighting system, and pressure sensor technology for JAXA space station missions to the ISS.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom enterprise/government contracts (not publicly disclosed) |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels11 records
Sierra Space product offering
Product offeringCore offering
Sierra Space designs, manufactures, and delivers space systems and infrastructure for U.S. national security, NASA, and international space customers. Its primary offerings include the Dream Chaser reusable spaceplane for ISS cargo resupply, the LIFE inflatable space habitat, the Eclipse satellite bus line for missile warning and tracking missions, VORTEX rocket engines and propulsion systems, patented SMT solar arrays, and a catalog of high-reliability spaceflight hardware and subsystems. The company also co-develops the Orbital Reef commercial space station with Blue Origin.
Differentiator
Problem solved
Functional benefit
Brands
- Dream Chaser®: Sierra Space's reusable commercial spaceplane (uncrewed cargo variant named Tenacity) designed for runway landings and ISS resupply under NASA's CRS-2 contract.
- Shooting Star®
- LIFE® (Large Integrated Flexible Environment)
- Eclipse™ Satellite Bus Line
- Orbital Reef
- Sierra Space Ghost
- Sierra Space Spectre
- Sierra Black OS / Sierra O/S
Products and services
- Dream Chaser Tenacity Spaceplane Reusable, uncrewed commercial spaceplane (30 feet / 9 meters long) delivering up to 8,000 lbs of cargo upmass to LEO under the NASA CRS-2 contract; capable of gentle 1.5G runway landings and delivering payloads back to Earth within one hour. Designed for 15+ reusable missions.
- Shooting Star Cargo Module Flexible 15-foot transport and cargo vehicle attached to Dream Chaser; provides 7,000+ lbs internal cargo capacity plus three external mounting points, and is disposed of by burning up in Earth's atmosphere on each CRS-2 mission.
- Eclipse Satellite Bus Line Next-generation satellite product line comprising three classes — Horizon (proliferated LEO constellations), Velocity (agile Space Control, +875 m/s delta-V, RPOD capable), and Titan (space mobility carrier / depot) — produced at scale at the Victory Works facility (30+ satellites/year) for missile defense, space control, and mobility missions.
- LIFE Inflatable Space Habitat Large Integrated Flexible Environment (LIFE) inflatable habitat built with Vectran fabric, with a roadmap ranging from LIFE 0.3 (10.6 m³) to LIFE 5000 (5,000 m³); the first operational 27-foot-diameter three-story structure can sleep four astronauts and supports biopharma, science, and manufacturing applications.
- Orbital Reef Commercial Space Station Mixed-use business park space station in LEO led by Sierra Space and Blue Origin under a NASA Space Act Agreement; combines the LIFE habitat with modular designs for commerce, research, and tourism with end-to-end services including transportation and onboard crew.
- VORTEX Rocket Engines and Propulsion Systems Patented VORTEX thrust chamber technology enabling cost-effective, reusable rocket engines from 1 lbf to 150,000 lbf thrust; includes fuel-rich LOX/LH2 engines (e.g., Vortex 35,000 lbf), hybrid rocket systems, non-toxic hypergols, and gelled propellant research.
- SMT Solar Arrays (Electrical Power Systems) End-to-end electric power generation systems using patented Surface Mount Technology (SMT) with 10-40% increased power density; heritage designs from 28V to 75V, with power from 500W to 3,500W, produced at the new Colorado Power Station facility.
- Spaceflight Hardware Catalog
- Microgravity Environmental Systems (ECLSS) Environmental Control and Life Support Systems (ECLSS) for sustaining humans in space, including atmospheric revitalization, pressure control, water recovery, thermal systems, crew systems (lighting, payloads, trash management), and In Situ Resource Utilization tools for lunar and Mars regolith processing.
Quantifiable outcome
- 4,000+ space systems delivered; 500+ missions supported with 100% operational success on subsystems
- +8 more outcomes
Companies that use Sierra Space
Customer profileNamed customers10 records
Segments4 records
Ideal customer profiles4 records
Sierra Space technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability3 records
Feature10 records
Sierra Space partnerships and signals
Strategic signalPartnerships
15 partnerships are on record, tiered core, flagship and minor.
- Texas A&M University (Vashisht College of Medicine)coreSierra Space delivered a Dream Chaser spaceplane mock-up to Texas A&M University from NASA's Johnson Space Center, formally launching a strategic alliance with the university's Aerospace Medicine Program. The mock-up serves as a cornerstone training and research asset for aerospace medicine education and flight surgeon preparation. Jointly develop research projects, create new training procedures, and offer internship opportunities.
- NASA Glenn Research CentercoreNASA's Carbothermal Reduction Demonstration (CaRD) project brought together a carbothermal reactor from Sierra Space, a solar concentrator from NASA Glenn Research Center, precision mirrors from Composite Mirror Applications, and avionics/software systems from NASA Kennedy Space Center. The project completed integrated prototype testing using concentrated solar energy to extract oxygen from simulated lunar regolith.
- Sierra Nevada Corporation (SNC) / AeroVironmentcoreAeroVironment and SNC announced a strategic partnership on August 7, 2025, to deliver integrated layered air and missile defense capabilities for the Golden Dome for America (GDA) program. Sierra Space, SNC's sister company, is exploring synergies to address critical GDA challenges. Combined capabilities address UAS, advanced cruise missiles, and next-generation aerial threats through sensors, directed energy, kinetic systems, and electronic warfare.
- Mitsubishi Heavy IndustriescoreSierra Space was awarded a contract by Mitsubishi Heavy Industries to deliver spacecraft docking components for the International Space Station, including Passive Common Berthing Mechanism, connection hatch, lighting system, and pressure sensor technology. Components will be used by the Japan Aerospace Exploration Agency (JAXA) for Japanese space station missions to the ISS.
- Oak Ridge National Laboratory (U.S. Department of Energy)coreCollaboration with DOE's Oak Ridge National Laboratory to revolutionize thermal protection for a new generation of commercial space transportation vehicles.
- Maxar TechnologiescoreIn December 2022, Sierra Space was awarded a very large constellation program for the Space Development Agency through Maxar. Multiple SMT solar arrays will be manufactured, tested, and delivered for the SDA's proliferated LEO satellites. Also Dan Jablonsky, Sierra Space's current CEO, was formerly CEO of Maxar Technologies.
- Blue Origin (Orbital Reef Partner)flagshipJoint development partner for the Orbital Reef commercial space station in collaboration with Blue Origin, with additional involvement from Boeing and Amazon. Orbital Reef is intended to be a mixed-use business park in space for commerce, research, and tourism.
- Blue OriginflagshipPrincipal partner with Sierra Space on the Orbital Reef commercial space station. Orbital Reef is being developed as a mixed-use space station in low-Earth orbit for commerce, research, and tourism, featuring Sierra Space's LIFE habitat. Other Orbital Reef partners include Boeing and Amazon. The station is intended to be the first commercially owned and operated space station.
- BoeingcoreCo-developer on the Orbital Reef commercial space station alongside Sierra Space and Blue Origin.
- AmazoncorePartner on the Orbital Reef commercial space station alongside Sierra Space, Blue Origin, and Boeing.
- NASAflagshipMulti-decade strategic partner. Sierra Space was awarded the Commercial Resupply Services 2 (CRS-2) contract for cargo delivery to the ISS using Dream Chaser. Also has a Space Act Agreement under the CCSC-2 initiative for a pathfinder space station mission, a Lunar Logistics contract for inflatable habitat applications on the Moon, and the Carbothermal Reduction Demonstration (CaRD) reactor for oxygen extraction from lunar regolith. Facility partnerships at Kennedy Space Center. Multiple additional programs.
- AstranisminorCo-selected with Sierra Space and L3Harris for Phase 0 of the U.S. Space Force's Resilient GPS (R-GPS) program to develop small, low-cost navigation satellites as backup to the existing GPS constellation. Demonstrated that small navigation satellites could be developed quickly and at significantly lower costs than traditional GPS spacecraft.
- L3HarrisminorCo-selected with Sierra Space and Astranis for Phase 0 of the U.S. Space Force's Resilient GPS (R-GPS) program to develop small navigation satellites as backup to the existing GPS constellation.
- Sierra Nevada Corporation (SNC) — Parent / Sister CompanyflagshipSierra Space was founded in 2021 as a subsidiary of Sierra Nevada Corporation (SNC), owned by Eren and Fatih Özmen. Fatih Ozmen serves as Board Chair and CEO/Owner of SNC; Eren Ozmen serves as Chairwoman, President, and Owner of SNC. Fatih Ozmen transitioned to Executive Chairman of Sierra Space after previously serving as interim CEO. SNC's space heritage provides the foundation for Sierra Space's 30+ years of spaceflight heritage.
- AeroEducateminorSTEM education collaboration — Sierra Space partners with AeroEducate to encourage and facilitate youth education through STEM and other valuable learning activities, opening pathways into rewarding aviation and aerospace careers.
Scale indicators14 records
Recent moves9 records
Expansion highlights7 records
Sierra Space competitors and assessment
Company assessmentBroad incumbents
- Northrop Grumman: Major U.S. defense prime with overlapping space systems businesses including Cygnus ISS cargo resupply, missile-warning satellites, and tactical space systems. Directly competes with Sierra Space on CRS-class cargo missions and SDA-class proliferated LEO contracts.
- Boeing: Boeing Defense, Space & Security overlaps with Sierra Space on ISS programs (Starliner), satellite systems, and is a co-developer on Orbital Reef. The former Boeing CFO Greg Smith also sits on Sierra Space's board.
- Lockheed Martin: Largest U.S. defense prime with deep space systems portfolio across missile warning, national security satellites, and Orion. Competes with Sierra Space on classified space programs and has hired senior talent (e.g., Jeff Schrader) out of Lockheed Martin Space.
- SpaceX: Dominant commercial launch and ISS cargo provider whose Dragon spacecraft directly competes with Dream Chaser for CRS-class missions and beyond-LEO services. Also operates Starshield national security business that competes for adjacent defense space dollars.
Direct peers
- Blue Origin: Sierra Space's partner on Orbital Reef and co-developer of commercial space infrastructure; also operates a competing commercial launch and space systems business. Closest partner-competitor with material overlap on habitats, space transportation, and orbital destinations.
- Rocket Lab: End-to-end space company with launch, space systems, and satellite components businesses (Solar, SDA wins, acquisition of SolAero, etc.). Direct competitor in small-satellite buses, solar arrays, and national security space contracts.
- L3Harris Technologies: Major defense and intelligence space prime competing head-to-head with Sierra Space on SDA-class proliferated LEO satellites, R-GPS Phase 0, and missile-tracking payloads. Similar customer base across DoW and IC space procurement agencies.
- Axiom Space: Developer of commercial space station modules attached to the ISS and a planned free-flying station, competing with Sierra Space's LIFE habitat and Orbital Reef for the ISS-replacement commercial LEO market.
- Voyager Space (Voyager Technologies): Operator of the Starlab commercial space station joint venture (with Airbus) and integrator of commercial space systems. Direct competitor to Orbital Reef and Sierra Space's LIFE habitat for the next-generation LEO commercial station opportunity.
Emerging players
- Redwire Corporation: Public space infrastructure company providing satellite components, deployable structures, and in-space manufacturing systems with significant overlap to Sierra Space's hardware catalog and LIFE inflatable habitat heritage.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Sierra Space social profiles
Digital presenceSierra Space compliance and trust
Trust signalCompliance2 records
Sierra Space financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sierra Space leadership team
Management profileNumber of profiles
Profiles22 records
Sierra Space funding detail
Funding detailFunding overview
Funding rounds3 records
Investors11 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sierra Space M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sierra Space
What does Sierra Space do?
Sierra Space designs, manufactures, and delivers space systems and infrastructure for U.S. national security, NASA, and international space customers. Its primary offerings include the Dream Chaser reusable spaceplane for ISS cargo resupply, the LIFE inflatable space habitat, the Eclipse satellite bus line for missile warning and tracking missions, VORTEX rocket engines and propulsion systems, patented SMT solar arrays, and a catalog of high-reliability spaceflight hardware and subsystems. The company also co-develops the Orbital Reef commercial space station with Blue Origin.
Is Sierra Space a public or private company?
Sierra Space is a private company. It is classified as venture growth investor backed and is currently operating.
When was Sierra Space founded?
Sierra Space was founded in 2021. It employs 1,001 to 5,000 people.
Where is Sierra Space based?
Sierra Space is headquartered in Louisville, United States, in the North America region.
How does Sierra Space make money?
Five revenue lines are on record. Government Defense Contracts are the primary driver. The others are NASA Commercial Resupply Services (CRS-2), spaceflight Hardware and Subsystems Sales, commercial LEO Services and Space Station Infrastructure and international Space Agency and Prime Contractor Sales.
Who are Sierra Space's main competitors?
Broad incumbents on record are Northrop Grumman, Boeing, Lockheed Martin and SpaceX. Direct peers are Blue Origin, Rocket Lab, L3Harris Technologies, Axiom Space and Voyager Space (Voyager Technologies). Redwire Corporation is listed as an emerging player.
Does Sierra Space have an API?
No public API is recorded for Sierra Space.
What industry is Sierra Space in?
Sierra Space's product category is Commercial Spacecraft and Space Systems. Its primary akta.pro industry code is IMABACAB, Spacecraft & Satellites (Civil/Commercial), with a secondary code of IMABACAM, Space Logistics & In-Orbit Servicing (Refueling, Tug, Debris Removal). Its NAICS code is 336414 and its SIC code is 3812.