I’ve already had this topic come up on a few calls this week. SpaceX filed its S-1 on May 20, 2026, and it’s going to be a conversation starter for a while. This is expected to be the largest IPO in U.S. history — targeting a valuation of $1.5 trillion or more — and after 23 years as a private company, we’re finally getting a real look at the financials. What’s inside is worth understanding before your clients ask.
The Number That Tells the Story
In 2025, SpaceX brought in $18.7 billion in revenue and lost $4.9 billion. That’s already a big headline. But Q1 2026 is where it gets really striking: $4.3 billion in net loss on $4.7 billion of revenue. They’re losing nearly as much as they’re taking in — in a single quarter.
And yet the company is targeting a $1.5 trillion valuation. That tension — accelerating losses, record-breaking valuation — is exactly what clients are going to bring to you. It’s worth having a real answer ready.
Three Businesses in One Filing
The first thing to understand is that SpaceX isn’t one business — it’s three, and they look very different from each other.
- Starlink (satellite internet) — $11.4B in 2025 revenue. This is the engine. Thousands of satellites in orbit, consumer and enterprise hardware, global coverage. The catch: it’s fundamentally a telecom business, which tends to trade at lower multiples than pure-play tech. It’s more utility than growth company at this point.
- Space (Falcon launches, government contracts) — $4.1B. The original business. SpaceX is still the undisputed leader in reusable rockets, and there’s real upside here as the commercial space market develops. But it’s not the primary revenue driver today.
- AI / xAI (post-merger) — $3.2B. In February 2026, SpaceX merged with xAI, Elon Musk’s AI company. This is what’s driving the losses. xAI spent $12.7 billion in capex last year — 61% of SpaceX’s total $20.7 billion — building out data centers to compete in the AI race. The Anthropic compute lease ($1.25 billion per month through May 2029) is a key piece of contracted revenue here.
Who Actually Controls SpaceX
This follows the same playbook as Google, Meta, and Snap. There are two share classes: Class A (1 vote each, sold to the public) and Class B (10 votes each, held by insiders). Musk holds 5.6 billion Class B shares and 849 million Class A shares. Together with other insiders, that gives them 86% of combined voting power.
Public investors get economic exposure to SpaceX’s growth. They don’t get governance. That’s a meaningful distinction for any client evaluating the stock — and it’s worth flagging proactively for anyone receiving SpaceX equity as compensation.
On lockups: Musk and close insiders are locked for 366 days with no early-release option. Other pre-IPO investors have a 180-day lockup with some early-release provisions tied to earnings dates. There won’t be a lot of float on day one.
The Related-Party Web
This is where it gets complicated from an accounting standpoint. Tesla is mentioned 87 times in the prospectus. The disclosed transactions from 2025 alone include SpaceX purchasing $506 million in Tesla Megapacks, $131 million in Cybertrucks (at MSRP), and xAI paying Tesla $731 million since early 2024. SpaceX and Tesla are also jointly developing Terafab (a chip factory) and a project called Macrohard.
These are all board-approved and disclosed. But board approval doesn’t eliminate conflict-of-interest risk — it just documents it. For any CPA doing due diligence on a Musk-entity transaction, this prospectus is the place to start for ASC 850 reference material.
Key Takeaways for Accountants and Finance Professionals
- Losses are real and accelerating — primarily driven by xAI’s $12.7B capex build, not the core launch or Starlink businesses. The two stories need to be separated.
- Starlink is the valuation thesis — $11.4B in recurring revenue with global growth potential. How markets price that versus a traditional telecom multiple is the central valuation question.
- Public shareholders have economics, not governance — the dual-class structure is legal, common, and worth flagging to any client receiving or evaluating SpaceX equity.
- Related-party disclosures are extensive — over $1.3B in cross-entity purchases in 2025 alone. Know this filing before you advise on anything touching a Musk-company transaction.
- Government concentration is a real risk factor — ~20% of revenue from U.S. federal agencies (NASA, Pentagon, NRO). Policy shifts and budget cycles matter here.
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