COMPANIES · SPACE INFRA

Sierra Space

Sierra Space is a privately held American company building the Dream Chaser reusable spaceplane, satellites and spacecraft subsystems, propulsion and solar arrays, with a growing national-security business. It raised $550 million in March 2026 at an $8 billion valuation.

AI-adjacentSpace infra
What it does

Sierra Space is a privately held American company building the Dream Chaser reusable spaceplane, satellites and spacecraft subsystems, propulsion and solar arrays, with a growing national-security business. It raised $550 million in March 2026 at an $8 billion valuation.

Why it matters

It is one of the larger private space companies and holds Space Development Agency tracking-layer work alongside its space-transport ambitions, which puts it in the same defense programs as the primes. Its own press material describes no AI product.

How it makes money

NASA, US national-security customers and commercial payload customers pay Sierra Space for satellites, spacecraft, subsystems and cargo transport.

Geography

United States

AI stack position

Space and next-generation infrastructure. Launch providers, satellite builders and operators, ground networks and the first attempts at running computing in orbit. Most of these companies have no AI business today; they are on this map because of what they carry, connect or build for the companies that do. Open the space lens.

Connections (2)

Every connection below is tied to a readable source, date, classification and statement of its limits. A company source establishes what that company stated; it does not necessarily provide independent confirmation.

Current relationships (1)

Coatue Management invested in Sierra Space
Invested inCurrent
Coatue was named among the investors in Sierra Space's $550 million Series C round, which closed at an $8 billion post-money valuation and was led by LuminArx Capital Management.

Source: 2026-03-05 · reviewed 2026-09-24

Evidence: Primary-source statement · Reported operating

Limits: Establishes participation in a funding round. It does not establish the size of Coatue's stake, any board seat, control, or that the $8 billion valuation reflects revenue or an independent appraisal.

Sierra Space Closes $550 Million in Series C Round with a Valuation of $8 Billion ↗

Comparisons (1)

Sierra Space competes with L3Harris Technologies
Competes withComparison only
Sierra Space said it holds a Space Development Agency Tranche 2 Tracking Layer contract with a maximum potential value of $740 million for 18 missile-warning satellites, the same SDA tracking-layer mission area in which L3Harris builds satellites.

Source: 2026-03-05 · reviewed 2026-09-24

Evidence: Analytical comparison · Product/market overlap

Limits: The cited source does not name L3Harris. Maximum potential contract value is a ceiling, not revenue or money received, and this does not establish that either company won work at the other's expense.

Sierra Space Closes $550 Million in Series C Round with a Valuation of $8 Billion ↗

Explore it interactively

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Inclusion in this database is not an endorsement of a company or its securities. Nothing here is a recommendation to buy or sell anything, and none of it is individualized investment advice. See the disclosures. Data: AI Map v3.22, released .