Xcout Intel
Sierra Space competitors & alternatives
The 12 closest competitors and alternatives to Sierra Space among aerospace companies — ranked by similarity to what Sierra Space actually does, not by market-cap band.
Subscribe to see Sierra Space’s full profile → the full roster, investors in every round, weekly hiring history and every corporate event
About Sierra Space
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.
Sierra Space at a glance
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.
Sierra Space leadership
- Dan Jablonskychief executive officer
- Dan JablonskyExecutive Officer
- Kelly GarehimeExecutive Officer
- Troy LahrExecutive Officer
- Colin BryantDirector
- Cyrus BehbehaniDirector
7 more named people on record for Sierra Space, with roles, board committees and tenure — see the full roster →
Sierra Space funding rounds
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 →
Hiring at Sierra Space
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 →
Top 12 Sierra Space competitors
Ranked by semantic similarity — how close each company is to Sierra Space by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Similar aerospace company
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.
Similar aerospace company
Phase Four, Inc. is an aerospace company founded in 2015 that operates in California and develops propulsion technologies.
Similar aerospace company
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.
Similar aerospace company
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.
Similar aerospace company
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.
Aerospace & Defense
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.
Aerospace & Defense
OHB SE is a global space and technology company operating across Germany, the rest of Europe, and international markets. The company specializes in providing advanced technology services, manufacturing and distributing specialized products, and managing projects within the fields of space and aeronautics, telematics, and satellite services. Its operations are structured into three distinct segments: Space Systems, Aerospace, and Digital. The Space Systems division focuses on the comprehensive development and execution of various space missions. This encompasses the design and production of both low-orbiting and geostationary small satellites, critical for navigation, scientific research, communications, and earth and weather observation, including their scientific payloads. Furthermore, this segment is involved in the assembly and outfitting of the International Space Station, and conducts studies and develops models for exploring the solar system, targeting celestial bodies such as the Moon, asteroids, and Mars. The Aerospace segment is dedicated to the development and assembly of products for aviation and space applications, alongside other industrial activities. Lastly, the Digital segment provides specialized mechatronic systems for antennas and telescopes, participates in numerous radio telescope projects, manages the operation of space-borne systems, creates digital applications leveraging satellite data, and offers expertise in information technology and cybersecurity. OHB SE's headquarters are situated in Bremen, Germany.
Similar aerospace company
GATE Space builds high-thrust chemical propulsion systems and mobility solutions powered by patented rocket engines and green propellants. Their products enable satellites, capsules, and landing vehicles to perform rapid maneuvers and precise orbit and attitude control.
Similar aerospace company
Magellan Aerospace Corporation, operating via its various subsidiaries, specializes in the design, engineering, production, and distribution of both aero engine and structural parts for the global aerospace sector. Its market presence extends across Canada, the United States, Europe, and Asia. Its extensive product portfolio includes a wide array of engine components, such as frames, casings, bypass ducts, shafts, and specialized materials like metallic honeycomb, alongside advanced processes like filament winding. The company also supplies critical compressor, turbine, and afterburner sub-assemblies. Furthermore, Magellan manufactures various airframe structures, including both small and large wing sections, landing gear systems, horizontal and vertical stabilizing surfaces, and nacelle exhaust systems. Other structural offerings encompass crown modules, vane boxes, transition ducts, wing spars, ribs, skins, access panels, and comprehensive kitting packages. Beyond traditional aircraft components, Magellan produces specialized items like Black Brant rockets and RATO booster motors, along with complete rocket weapon systems for both fixed-wing and rotary-wing applications. Its offerings further extend to avionics, precision-machined metal seals, rocket engine mounts, and diverse cast products. The firm also provides support services for the emerging 'newspace' industry and satellite operations. The company leverages advanced manufacturing technologies such as 3D sand printing, precision metal pouring, solidification modeling, automated pouring and finishing, digital radiography, and 3D scanning services. Comprehensive maintenance, repair, and overhaul (MRO) services are available for various engines and components. Additionally, Magellan offers end-to-end lifecycle management solutions, encompassing logistics, fleet management, and engineering support. Specialized wire strike protection system services are also part of its portfolio. Established in 1996, Magellan Aerospace Corporation maintains its headquarters in Mississauga, Canada.
Similar aerospace company
Bellatrix Aerospace is a private Indian aerospace manufacturer and small satellite company. Headquartered in Bengaluru, Karnataka, the firm develops and manufactures advanced propulsion technologies and in-space mobility solutions.
Aerospace & Defense
Ecliptic LLC designs and manufactures satellite cameras and space avionics, including payload controllers, sequencers, and on-board switches. The company supplies aerospace-grade systems for satellites, launchers, and spacecraft for various space programs and missions.
Similar aerospace company
L3Harris Technologies, Inc. is a prominent technology firm specializing in aerospace and defense, delivering vital, high-stakes solutions to governmental and commercial clients across the globe. Its diverse operations are organized into several key segments: The Integrated Mission Systems division is responsible for providing versatile intelligence, surveillance, and reconnaissance (ISR) platforms, alongside various communication technologies. This unit also offers comprehensive support for fleet management, as well as the development, modification, and routine maintenance of sensors for ISR and airborne operations. Furthermore, it develops and integrates specialized mission systems tailored for naval vessels and maritime operations, including sophisticated signals and multi-intelligence platforms, autonomous surface and undersea vehicles, and advanced power and ship control electronics. Cutting-edge electro-optical and infrared technologies are also part of its offerings. The Space and Airborne Systems segment is dedicated to providing sophisticated space payloads, advanced sensor technologies, and complete mission solutions for space-based operations. It also offers secure intelligence and robust cyber defense capabilities, specialized avionics for mission-specific applications, and state-of-the-art electronic warfare systems. The Communication Systems division delivers reliable tactical communication tools and secure, broadband mobile networked communication devices. This encompasses airborne, space, and surface data link terminals, ground stations, and portable tactical satellite communication (SATCOM) systems designed for manned aircraft, unmanned aerial vehicles (UAVs), and naval vessels. The segment also produces integrated night vision systems, mountable on helmets and weapons, along with radio systems, applications, and equipment essential for critical public safety and professional communication needs. Additionally, it supplies SATCOM terminals and integrated battlefield management networks. Finally, the Aviation Systems segment focuses on defense-oriented aviation products, training for commercial pilots, and mission-critical network solutions for effective air traffic management. Originally established in 1895 as Harris Corporation, the company adopted its current name, L3Harris Technologies, Inc., in June 2019. Its headquarters are located in Melbourne, Florida.
Analyze another company
Search any company we track to see its competitive set.
Or describe a company
Paste a short paragraph describing a company or product — we'll find the most similar companies we track, scored 1–100.
See the full profile of Sierra Space and its market
Funding, investors, tech stack, hiring signals, leadership and corporate events — for Sierra Spaceand every competitor above — in one live dashboard.
Subscribe to Xcout Intel →