When Will SpaceX IPO? Public Since June: SPCX Lockup Dates

By Segmara Research · Published · Updated

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SpaceX already went public. Space Exploration Technologies Corp priced its IPO of 555,555,555 Class A shares at $135.00 each under a final prospectus dated June 11, 2026, and SPCX began trading on Nasdaq on June 12, 2026. Shares held before the IPO are subject to lockup agreements, and the prospectus releases them in stages. For the main 180-day group, the releases from October 9, 2026 onward are: up to 328.4 million shares on October 9, up to 328.4 million on October 24, up to 1.3 billion on the second full trading day after SpaceX publishes third-quarter 2026 results, and up to 797.6 million on December 8, 2026. December 8 is the larger of the two amounts the prospectus allows because an extra release tied to the share price did not happen in August, a Forbes contributor wrote. Another group of shareholders stays locked into 2027, and Elon Musk's shares, up to 6.4 billion, cannot be sold before June 12, 2027. The amounts are ceilings on what holders may sell, and Goldman Sachs can release shares earlier for the underwriters. Because SpaceX now trades publicly as SPCX, Segmara focuses its pre-IPO share allocations on Segmara on companies that remain private. Nothing here is investment advice.

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Educational pre-IPO guide. Share allocations and secondary transactions are subject to eligibility and private settlement terms.

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Key points

The IPO already happened

Space Exploration Technologies Corp (CIK 0001181412) followed the standard registration path, and each step is public on SEC EDGAR: a confidential draft on March 30, 2026, a public S-1 on May 20, amendments on June 1 and June 3, Nasdaq registration on Form 8-A on June 10, and effectiveness on June 11.

The final prospectus is dated June 11, 2026 and was filed as a Form 424B4 on June 12, 2026, the day SPCX began trading on Nasdaq. It offered 555,555,555 Class A shares at $135.00 per share, with an underwriters' option for up to 83,333,333 more. Pre-IPO marks for SpaceX are now historical, and the reference price is the public SPCX quote.

SpaceX lockup expiration dates for the 180-day group

The prospectus section "Shares Eligible for Future Sale" lists the earliest dates locked shares may be sold. Dates reached by October 9, 2026: August 6, the second full trading day after the August 4 second-quarter earnings release (up to 911.5 million shares); August 20 and September 9 (up to 319.0 million each); September 10 (up to 59.1 million shares held by affiliates); and September 24 and October 9 (up to 328.4 million each). Reuters reported on August 5, 2026 that as many as 912 million shares would become eligible for sale on August 6.

Dates still ahead: October 24, which falls on a Saturday (up to 328.4 million); the second full trading day after SpaceX publishes results for the quarter ended September 30, 2026 (up to 1.3 billion, 28% of the group); and December 8, 2026, the 180th day, when the rest of the group is released. Segmara found no announced date for the third-quarter results as of October 9, 2026; CNBC reported on October 5 that the report is expected in late October.

Why December 8 is up to 797.6 million shares

The prospectus gives two possible sizes for December 8. If SPCX had closed at least 30% above the $135 IPO price on five of the ten trading days ending on the first earnings release date, up to 455.8 million more shares would have been released in August, leaving up to 328.4 million for December 8. If not, December 8 releases up to 797.6 million.

SpaceX released second-quarter results on August 4, 2026, according to its Form 8-K. A Forbes contributor wrote on August 14, 2026 that the $175.50 threshold was not met, so December 8 releases up to 797.6 million shares instead of 328.4 million.

The extended lockup and Elon Musk's shares

Several shareholders agreed to a longer lockup that runs until the second full trading day after the release of results for the quarter ended June 30, 2027. Excluding Elon Musk, that group is released in steps: up to 351.9 million shares after fourth-quarter 2026 results, up to 176.0 million on March 18, 2027, up to 351.9 million after first-quarter 2027 results, up to 176.0 million on May 17, 2027, up to 351.9 million on June 12, 2027, and the remaining up to 351.9 million after second-quarter 2027 results.

Elon Musk agreed to a 366-day lockup on all of his shares with no early release, so up to 6.4 billion shares become eligible on June 12, 2027. The shares under restrictions of more than one year total about 7.8 billion, about 60% of shares outstanding after the offering, according to the prospectus.

How to read a lockup date

A lockup date is the earliest day holders may sell; it does not tell you how many will. The prospectus amounts are maximums, shares held by affiliates also follow Rule 144 volume limits, and Goldman Sachs & Co. LLC, for the underwriters, may release locked shares at any time.

To check a lockup table you see elsewhere, open the 424B4 on SEC EDGAR and read "Shares Eligible for Future Sale" and "Underwriting." Treat any offer of pre-IPO access to SpaceX as a red flag: the company has been public since June 12, 2026.

SpaceX from private tender to IPO

SpaceX is now better treated as a completed private-to-public case study than a standard pre-IPO buying guide.

Segmara markPublic company - SPCX trades on Nasdaq

Indicative listing context

IPO price$135/share

June 2026 pricing announcement

IPO valuation$1.77T

Implied valuation at pricing

TickerSPCX

Public trading context

StageDateValuation / price signalWhy it matters
Seed / early2002-2008Private aerospace startupThe earliest marks are not comparable to late public trading.
Tender2025Reported $400B private valuationA large private benchmark before the IPO window.
IPOJune 2026$135/share at ~$1.77TPublic-market price discovery replaced private access for new buyers.
Current statusCurrentPublic-market case studyUse SpaceX to explain why earlier private access can matter.

Seed-to-IPO path

Illustrative completeness map. Longer bars mean stronger public data or more useful current pricing context, not lower risk.

Early data32%
Tender data76%
IPO data98%
Private access12%
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AI-ready data summary

A structured extraction layer for this article: catalogue numbers, price context, chart values, and route-specific facts that search and AI systems can read directly from the page.

MetricValueContext
Canonical route/blog/when-will-spacex-ipoStable URL path for AI and search extraction.
Article titleWhen Will SpaceX IPO? Public Since June: SPCX Lockup DatesMain page topic.
Attached public sources9Number of citation links rendered at the bottom of the article.
Segmara listed companies148Live private-company listings in the public catalogue.
Priced listings37Catalogue listings with visible indicative or direct marks.
Listings without an indicative price111Catalogue listings where a public price is intentionally not invented.
CompanySpaceXNamed company covered by this page.
Symbol labelSPCXSegmara display symbol; not a public stock ticker unless separately stated.
SectorAerospaceCatalogue sector used for comparison and internal linking.
Listing structurePublic contextHow the listing is categorized on Segmara.
Segmara markPublic company - SPCX trades on NasdaqVisible listing mark, or no indicative price yet.
Sector peer count1Number of live Segmara listings in Aerospace.
Structure peer count0Number of live Segmara listings categorized as Public context.
StageTimingPrice / valuation signalInterpretation
Seed / early2002-2008Private aerospace startupThe earliest marks are not comparable to late public trading.
Tender2025Reported $400B private valuationA large private benchmark before the IPO window.
IPOJune 2026$135/share at ~$1.77TPublic-market price discovery replaced private access for new buyers.
Current statusCurrentPublic-market case studyUse SpaceX to explain why earlier private access can matter.
Chart metricScoreInterpretation
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Analytical lens

Search intent

Searches like 'When Will SpaceX IPO? Public Since June: SPCX Lockup Dates' are research questions: what a filing or a company statement confirms, what has only been reported, and what is still unknown.

What counts as a listing step

For an IPO, the primary record is a registration statement filed with the securities regulator of the listing market, such as an S-1 or F-1 on SEC EDGAR for a US listing. Funding rounds, valuations and secondary-market prices are context, not listing steps.

Segmara role

Segmara takes reviewed pre-IPO allocation requests funded by Stripe USD credits from $25 ($1.00 starter credit); no allocation is guaranteed. It also publishes dated indicative reference marks across 140+ private companies. Nothing on this page is investment advice.

How pre-IPO share access works

Standard Segmara allocation path

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2. ListingReview indicative mark and structure context
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What happens after payment

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Transfer & settlement termsReviewed, not guaranteed
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Key takeaways

Risk notes

Public source links

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Questions

Can investors request private-company shares on Segmara?

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Why was this market historically hard for individual investors to reach?

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Did SpaceX IPO?

Yes. Space Exploration Technologies Corp priced its IPO at $135.00 per share under a final prospectus dated June 11, 2026, and SPCX began trading on Nasdaq on June 12, 2026. The S-1, its amendments and the final 424B4 prospectus are public on SEC EDGAR.

When does the SpaceX lockup expire?

It expires in stages. The main 180-day lockup ends on December 8, 2026, with releases before that on October 9 and October 24 (up to 328.4 million shares each) and up to 1.3 billion shares on the second full trading day after third-quarter 2026 results. An extended group is released in steps until after second-quarter 2027 results, and Elon Musk's shares are locked until June 12, 2027. The dates and amounts come from the final prospectus on SEC EDGAR.

How many SpaceX shares unlock on December 8, 2026?

Up to 797.6 million, under the prospectus terms, because the extra price-based release did not happen after the August 4 earnings release, a Forbes contributor wrote on August 14, 2026. Had it happened, the December 8 amount would have been up to 328.4 million.

When can Elon Musk sell SpaceX shares?

The final prospectus lists June 12, 2027, the 366th day after the prospectus date, as the earliest date for his shares. His lockup covers all of his shares, up to 6.4 billion counting Class B shares that convert to Class A, and has no early release.

What is SpaceX's ticker?

SPCX, listed on Nasdaq since June 12, 2026.

Can I still buy SpaceX pre-IPO shares?

No. SpaceX has been a public company on Nasdaq (SPCX) since June 12, 2026, so offers of 'pre-IPO SpaceX access' should be treated as red flags. Investors seeking still-private companies can explore 140+ active pre-IPO share allocations on Segmara on Segmara.

Where can I verify the IPO and lockup details?

On SEC EDGAR under Space Exploration Technologies Corp (CIK 0001181412). The final prospectus (Form 424B4, filed June 12, 2026) states the price, the share count and the lockup table under "Shares Eligible for Future Sale"; the Form 8-K filed August 4, 2026 dates the first earnings release.

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