Who owns SpaceX — and who controls it.

At the IPO, Elon Musk held more than 5.5 billion Class B shares — roughly 42% of SpaceX's equity and about 82% of the voting power, according to the prospectus as reported by the press. Class B stock carries 10 votes per share and does not trade, which is how roughly 42% of the economics becomes about 82% of the votes. Musk is CEO, Chief Engineer and Chairman.

Can he sell? Not before roughly mid-June 2027. Musk's shares are subject to a 366-day lock-up — longer than the staggered, up-to-180-day lock-up covering most other pre-IPO holders (see the SPCX lock-up schedule). Any Class B share that is sold converts to Class A on sale.

His count today: this page does not state a precise current figure, because holdings change and the changes are reported in SEC filings. One reason to treat the IPO-time number as approximate: total Class B shares outstanding were 5,569 million at June 30 and 5,339 million at September 30, 2026, per SpaceX's 8-K balance sheets — below the "more than 5.5 billion" reported for Musk at the IPO. Class B converts to Class A on transfer, and press figures may count holdings differently from the balance sheet. For the up-to-date number, check Musk's Form 4 filings (insider transactions) and any Schedule 13D or amendment (beneficial ownership above 5%) on SEC EDGAR.

About 13.58 billion as of Sept 30, 2026 — 8,240 million Class A and 5,339 million Class B shares, per the balance sheet in the Q3 2026 8-K. At June 30, 2026 the count was about 13.18 billion, per the Q2 2026 8-K. There is no Class C stock anymore — all Class C shares were converted, leaving two classes outstanding.

Source: condensed balance sheets in the Q2 (Aug 4, 2026) and Q3 (Oct 20, 2026) 8-K earnings releases. Counts change with conversions, equity awards and other issuance — check the latest quarterly filing.

The 638,888,888 shares sold in the IPO, including the greenshoe, were about 5% of the ~13.2 billion shares outstanding at listing. Between June 30 and Sept 30 the Class A count rose and the Class B count fell. At the Nov 3, 2026 close of $141.31, ~13.58 billion shares put SpaceX's market capitalization at about $1.9 trillion. For what each class buys you, see Class A vs Class B vs Class C shares.

SPCX uses a dual-class capital structure that is now standard across founder-led tech companies. Class A is what the public buys and what trades. Class B carries supervoting rights and is held by insiders. The structure mirrors Meta, Alphabet, and Palantir — and is more shareholder-friendly than Snap's 2017 IPO, which issued non-voting Class A shares only. If you are new to the mechanics, start with our explainer on Class A vs Class B vs Class C shares and voting rights, which covers what each class buys and how to check any company's structure for yourself.

The S-1's principal stockholders table names every direct holder of more than 5% of outstanding shares, plus all directors and executive officers. The disclosed positions:

Source: SpaceX S-1, principal stockholders table; Musk and Alphabet figures as reported from the prospectus. Other stakes shown are pre-IPO positions and do not reflect the 638.9M new Class A shares sold in the IPO (including the exercised greenshoe) or any later sales. For current holdings, check Form 4, 13D and 13G filings on SEC EDGAR.

SpaceX has run a series of structured tender offers — recurring opportunities for employees and earlier investors to sell shares back to the company or to incoming late-stage funds at company-set prices. The S-1 discloses three sets of relevant valuation marks:

The cadence from $350B in mid-2025 to a $1.77T target a year later is the question every IPO analyst is being asked. The S-1 attributes the step-up to four factors: (1) the absorption of xAI at the disclosed $250B mark, (2) Starlink's revenue growth from $7.7B to $11.4B over those twelve months, (3) realized progress on Starship orbital flight tests, and (4) a broader re-rating of "platform" AI businesses. Skeptics point to the same multiple expansion as a hot-IPO premium — see our valuation analysis for both sides.

The IPO sold 638,888,888 Class A shares at $135.00 — a 555,555,555-share base deal plus the 83,333,333-share greenshoe — for about $86 billion gross and ~$85.7 billion net (Q2 2026 8-K). Against ~13.2 billion shares outstanding at listing, IPO buyers held about 5% of the company. The post-IPO stack, using only figures disclosed or reported:

Musk figures: prospectus, as reported by the press. Share totals: Q2 2026 8-K balance sheet (7,607M Class A + 5,569M Class B at June 30, 2026). See the note above on why earlier pre-pricing estimates differ.

Earlier versions of this page said the float would "roughly quintuple" on a single Dec 9, 2026 lock-up expiry. That was wrong. According to IFR's reading of the prospectus, pre-IPO shares are released in stages:

• Aug 6, 2026 — a first tranche of ~911.5M shares (just under 7% of shares outstanding) became eligible, two days after Q2 results. A further 455.8M-share price-based early release did not trigger.
• 70, 90, 105, 120 and 135 days after the IPO — tranches of up to ~328.4M shares each, all now passed.
• After Q3 earnings (Oct 20) — up to ~1.3B more shares.
• Early December 2026 — the remaining standard 180-day lock-up ends (day 180 after the June 11 pricing is Dec 8).
• ~Mid-June 2027 — Elon Musk and other insiders, under a 366-day lock-up.

IFR estimated more than $500 billion of stock becomes eligible between August and year-end. The holders behind it span employees and former employees, late-stage investors from the $180B, $210B and $350B tender rounds, strategic holders including Alphabet, Founders Fund and Valor Equity Partners, and sovereign and family-office investors. Once their lock-ups lapse, affiliates generally sell under Rule 144, which caps sales at roughly 1% of shares outstanding (or average weekly volume, if greater) per three months.

None of these holders is required to sell — eligible is not sold. The pattern so far has not been a simple slide into each date: SPCX set its all-time low of $104.83 on Aug 3, days before the first release, then rallied ~6% on Aug 6 and nearly 16% the next day (CNBC). Its −9.14% drop on Oct 22 coincided with the post-Q3 tranche becoming eligible. The full dated breakdown is on the SPCX lock-up expiration schedule.

For broader IPO mechanics see the IPO details page. For company-side risk language see the risk factors page.

Investor objections to dual-class structures are common but rarely binding — index inclusion forces most large institutional accounts to hold these names anyway. The relevant peer set:

See our comparisons page for full peer side-by-side on revenue, margin, and multiple.