SpaceX is expected to file its IPO prospectus with the SEC this week, marking the end of a twenty-two-year run as a private company and setting up pricing for the week of June 15. The company has simultaneously accelerated employee stock vesting dates, converting restricted equity ahead of the public offering at a valuation last marked at $350 billion in December secondary transactions.

The filing follows four months of accelerated preparation after Bloomberg first reported in February that SpaceX had selected underwriters. The company communicated the vesting acceleration to employees in internal memos last week, moving up dates for approximately 15,000 current and former employees holding restricted stock units. This front-loads tax events but eliminates lockup complications post-IPO. The move costs SpaceX nothing in cash but signals management's confidence in clearing regulatory review without material delays.

The timing matters because SpaceX operates under four separate government contracts worth $11.8 billion through 2027, all of which require disclosure of beneficial ownership structures once the company goes public. The NASA Artemis contracts alone represent $4.2 billion in committed revenue, but the IPO prospectus will expose SpaceX's actual margins on fixed-price development work for the first time. Secondary market participants have modeled EBITDA margins between 18% and 31% depending on Starlink subscriber accounting, but no public filing has confirmed SpaceX's treatment of launch costs versus satellite depreciation.

The IPO arrives as Starlink approaches 4 million subscribers globally and begins contributing positive cash flow after seven years of capital consumption. Starlink's separation from SpaceX proper remains unresolved in the prospectus structure. If SpaceX files a traditional S-1, Starlink's financials will consolidate into the parent, exposing the unit economics investors have debated since 2019. If the company files for a tracking stock or separate class structure, it signals preparation for a Starlink spinoff within eighteen months, which debt covenants on SpaceX's $5.2 billion in outstanding credit facilities currently prohibit.

Tesla shares rose 4.1% on the news, a correlation that appears mechanical but reflects overlapping cap tables. Musk owns 42% of SpaceX, and the IPO unlocks liquidity he has previously accessed only through margin loans against Tesla stock. His last such loan, a $6.25 billion facility arranged in April 2022, carried covenants requiring Tesla shares above $180. Tesla closed Tuesday at $312. The SpaceX IPO removes that dependency and the associated overhang.

Allocators should watch three items. First, the risk factors section for any disclosure about Raptor engine production rates, which currently constrain Starship launch cadence and therefore Starlink deployment speed. Second, the use of proceeds, specifically any language about debt repayment, which would indicate whether SpaceX intends to refinance or retire the credit facilities. Third, the underwriter roster's international composition, which will show whether SpaceX is prioritizing U.S. retail distribution or accessing sovereign wealth allocations in the Middle East and Asia, where Starlink has government partnership agreements but limited operational visibility. The first two items should appear in the initial S-1 filing. The third will emerge in the roadshow structure during the week of June 8.

The IPO, if priced at the $350 billion December valuation, would rank as the third-largest U.S. debut after Alibaba and Meta, and the largest for a company with meaningful government revenue exposure since Lockheed Martin's $10.6 billion combination IPO in 1995.