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.