SpaceX Wins $4.16B Golden Dome Satellite Contract From US Space Force

SpaceX on Friday won a $4.16 billion US Space Force contract to build missile-tracking satellites for President Donald Trump’s Golden Dome defensive shield, the Pentagon confirmed. A separate $2.29 billion Space Data Network contract secured earlier in the week pushes the company’s total Space Force awards to $6.45 billion — all of it landing days before a blockbuster initial public offering.

No other contractor now holds a larger share of the military’s next-generation space-based sensing and data-relay architecture. SpaceX was already the dominant launch provider and the operator of the world’s largest satellite internet constellation. The two new awards move it squarely into the defence prime tier alongside Lockheed Martin and Northrop Grumman. Investors are about to get pitched a valuation of at least $1.8 trillion, down from an earlier target above $2 trillion.

What the contracts cover

Under the Golden Dome contract, SpaceX will build satellites capable of tracking airborne threats — aircraft and missiles — and relaying targeting data to ground-based interceptors in near-real time. General Michael Guetlein of the Space Force has said the system will achieve some operational capability by the end of 2028, Bloomberg reported. The programme, a priority Trump administration defence initiative, is modelled on Israel’s Iron Dome but scaled for continental defence.

The earlier $2.29 billion award funds the Space Data Network Backbone, a sensor-to-shooter data-relay system built on technology originally developed for SpaceX’s Starlink internet constellation, Ars Technica reported.

The government revenue story

A fifth of SpaceX’s 2025 revenue came from government contracts, the company disclosed in its IPO filing. That share already understates the forward revenue mix after this week’s awards, TechCrunch reported.

In the same filing, the company warned investors that its “business with governmental entities is subject to changes in policies, priorities, regulations, mandates, and funding levels.” The disclosure lands differently when the government is simultaneously handing SpaceX the two largest satellite-building contracts in Space Force history.

A single-supplier strategy

The awards represent a sharp break from the Space Development Agency’s multi-vendor approach. That strategy had spread work across York Space Systems, Lockheed Martin, Northrop Grumman, and Rocket Lab for roughly 340 satellites in its Tranche 2 Transport Layer. Avoiding single-supplier dependency was the explicit goal. Under the Golden Dome and SDN Backbone awards, both the sensing layer and the data-transport layer now sit with one company.

The IPO calculus

The contracts cut two ways for IPO investors. The $6.45 billion in new multi-year defence awards gives SpaceX a revenue visibility that launch services and Starlink subscriptions alone could not match — the kind of concrete number that anchors discounted cash flow models. Concentrating critical defence infrastructure with a company whose chief executive, Elon Musk, has repeatedly clashed with federal agencies, however, adds a different kind of variable. The IPO prospectus itself flags government relationships as an explicit risk factor. Public-market investors will decide what premium that volatility deserves.

Shares of legacy defence primes barely moved in after-hours trading Friday. Lockheed Martin closed at $512.34; Northrop Grumman finished at $498.70. Both awards were reported after the market close and will be tested when trading resumes Tuesday following the Memorial Day holiday.

SpaceX is expected to begin its IPO roadshow within weeks. Between the Golden Dome contract and the SDN Backbone award, the company’s bankers have a new line in the pitch deck. In dollar terms, SpaceX now holds more Space Force satellite contracts than any other prime contractor.