Northrop Grumman
Overview
Northrop Grumman's Space Systems segment — its largest by revenue at ~$10.8B in FY2025 — earns revenue through cost-plus government contracts as prime contractor or major subcontractor. Revenue streams include SLS solid rocket boosters (every Artemis mission), JWST science support, Gateway HALO module, Cygnus ISS cargo flights, classified NRO programs, and SDA tracking satellites. The heavily classified NRO portfolio provides a largely invisible but substantial revenue base.
Moat: Northrop Grumman is the sole provider of SLS solid rocket boosters, locking it into every NASA Artemis mission. As JWST prime contractor it holds 20+ years of follow-on science operations. The HALO module for the lunar Gateway represents a decade of crewed-station revenue. Decades of classified NRO satellite experience creates non-replicable institutional knowledge in the intelligence community.
Business
Primary customers
- Defense: U.S. Department of Defense
- Government: NASA
- Defense: National Reconnaissance Office
- Defense: Space Development Agency
- Defense: U.S. Space Force
Sectors
Defense & Space Infrastructure · Deep Space Exploration · Satellite Systems · Missile Defense
Key Products
- James Webb Space Telescopeoperational
NASA's premier infrared space observatory at L2; Northrop Grumman was prime contractor for the observatory and spacecraft bus, and supports ongoing science operations.
First flight: 2021-12-25
- SLS Solid Rocket Boostersoperational
Five-segment solid propellant boosters providing 75% of SLS lift-off thrust; sole-source to Northrop for all Artemis missions.
First flight: 2022-11-16
- Gateway HALO Moduledevelopment
Habitation and Logistics Outpost — NASA's initial lunar-orbit crew habitation module, scheduled for launch with the Power and Propulsion Element.
- Cygnus Cargo Spacecraftoperational
Uncrewed cargo resupply vehicle for ISS; 20+ successful missions. Evolved from Antares/Cygnus heritage into pressurized cargo leader.
First flight: 2013-09-18
- SDA Tranche Tracking Layer Satellitesdevelopment
Proliferated LEO missile-warning satellites for the Space Development Agency; Northrop holds Tranche 1 (16 satellites) and Tranche 3 (18 satellites) contracts.
Government Contracts
| Agency | Program | Amount | Year | Source |
|---|---|---|---|---|
| NASA | James Webb Space Telescope (prime contractor) | ~$10B (total lifecycle program) | 2002 | |
| NASA | Gateway HALO (Habitation and Logistics Outpost) module | ~$935M | 2020 | |
| NASA | Space Launch System Solid Rocket Boosters (SRBs) | Multi-billion (sole source through Artemis missions) | 2012 | |
| SDA | Tranche 3 Tracking Layer (18 satellites) | $764M | 2025 | |
| NASA | Cygnus Cargo Resupply (Commercial Resupply Services) | ~$1.56B (CRS-2 contract through 2024) | 2016 |
Near-term Catalysts
- 2027-Q4
Gateway HALO + PPE combined launch (lunar orbit)
First crewed-station hardware in lunar orbit; milestone payments begin and long-duration operations contract opportunities open for Northrop.
- 2027-Q2
SDA Tranche 3 satellites production and initial deliveries
Northrop's $764M T3 award begins generating production revenue and validates the company's tracking-layer manufacturing at scale.
Top Risks
- Space Systems revenue declined 6% in FY2025 due to wind-down of a canceled classified Space Force program and losing the NGI (Next-Generation Interceptor) contract to Lockheed; recovery depends on new wins.
- Sole-source SLS SRB position faces existential risk if NASA accelerates the Starship Human Landing System and reduces Artemis mission count post-Artemis III.
- Classified NRO portfolio is high-margin but opaque to investors — any program cancellation or restructure creates unforeseeable earnings risk.
Recent Milestones
- 2026-01
FY2025 results: total revenue $42.0B, Space Systems segment $10.8B
- 2025-12
Won $764M SDA Tranche 3 Tracking Layer contract for 18 satellites
- 2025-01
FY2024 results: record backlog $91.5B, book-to-bill 1.23x, Space Systems $11.7B
- 2024-10
HALO module structural stress testing successfully completed at Thales Alenia Space Europe
- 2024-01
JWST fuel analysis confirms 20+ year operational life at L2 — through the 2040s
Recent News
- Northrop Grumman FY2025 results: $42B revenue, space segment $10.8BNorthrop Grumman IR2026-01
- SDA awards Northrop Grumman $764M for Tranche 3 tracking layer satellitesSpace Development Agency2025-12
- 2025-01
- HALO structural testing complete at Thales Alenia Space; on track for lunar orbitNorthrop Grumman Newsroom2024-10
- Northrop Grumman reports FY2024 record backlog $91.5B; Space Systems $11.7B revenueNorthrop Grumman IR2024-01
What investors should know
Q1What does Northrop Grumman do in space?⌄
Q2How does Northrop Grumman make money in space?⌄
Q3Who are Northrop Grumman's primary customers?⌄
Q4What is Northrop Grumman's competitive moat in space?⌄
Q5What are the top risks for Northrop Grumman investors?⌄
Q6What near-term catalysts could move Northrop Grumman stock?⌄
Q7How does Northrop Grumman compare to Lockheed Martin in space?⌄
Peers
Compare side-by-side →Sources & References
Agency Document
- SDA Tranche 3 Award Announcement · 2025-12-19
- NASA Gateway HALO Award · 2020-05-22
SEC Filing
- SEC 10-K FY2025 · 2026-01-27
Investor Relations
Press Release
- NOC Q4/FY2025 Earnings Release · 2026-01-27
- NOC Q4/FY2024 Earnings Release · 2025-01-30