SpaceX (SPCX) Lockup Schedule: When Insider Shares Unlock (2026-2027)
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~81% NOT YET ELIGIBLE ●
When SpaceX (SPCX) went public on June 12, 2026, only a sliver of the company actually started trading. Roughly 4 to 5% of its shares made up the public float at first; the rest were locked up. The first big tranche (up to 911.5 million shares) unlocked on August 6, 2026, increasing the maximum potentially eligible supply. Over the next year those locked shares unlock in tranches, starting after the company’s first earnings report and running through a series of dates into 2027, when Elon Musk’s enormous stake finally frees up. Each unlock can expand eligible supply; it does not establish how many holders sell. This guide lays out the SpaceX lockup schedule date by date, explains why lockup expirations tend to pressure a stock, and looks at what history says using small-float IPOs like Facebook, Beyond Meat, and Rivian. This page is the lockup-specific piece of our wider coverage. For the IPO date, price, valuation, and how to invest in SpaceX, see the complete SpaceX IPO guide.
▶All 17 release tranches5 eligible · next dated October 9, 2026
What Is an IPO Lockup, and Why Is SPCX’s Float So Small?
An IPO lockup is a contractual agreement, negotiated between insiders and the underwriters and disclosed in the IPO prospectus, that bars insiders, early investors, and employees from selling their shares for a set period after the offering. It is not mandated by the SEC; the regulator only requires that the terms be disclosed. It is an underwriting convention, and the typical length is 90 to 180 days, with 180 days the most common. You can read the regulator’s plain-English explainer at Investor.gov.
That lockup is exactly why SPCX’s tradeable supply is so thin right now. SpaceX reported about 13.18 billion common shares as of July 28, before the August merger issuance, but the IPO floated only about 555 million new shares (around 639 million with the underwriters’ over-allotment). Almost everything else is locked. So the free float, the shares actually available to trade, started at only about 4 to 5% of the company, and modeled eligibility is around 19% after the verified releases listed below. This estimates potential eligible supply, not actual trading float.
Shares outstanding is every share a company has issued, including locked-up insider and employee stock. Free float is the portion actually available to trade in the open market. A small float amplifies volatility: with little supply available, even ordinary demand can move the price a lot, and it raises short-squeeze potential. A lockup keeps the early float artificially low, so when it expires and the float jumps, that added supply usually pressures the price.
A ~4 to 5% float on a company this large is extreme, and it is a big reason SPCX ran from its $135 IPO price toward $200 in its first days. Scarcity plus enormous demand equals big moves. The flip side is the whole point of this article: as lockups expire, that scarcity unwinds. Unlocks are not the only way SPCX supply can grow: SpaceX paid for xAI and Cursor with new shares, and our Tesla SpaceX merger guide works through what a hypothetical all-stock Tesla deal would mean for TSLA and SPCX holders.
This schedule tracks potential share eligibility. Our net-worth tracker combines disclosed holdings with market prices; changes in holdings and private-company estimates require source reconciliation.
The SpaceX (SPCX) Lockup Schedule: Every Key Date
Here is the most important thing to understand: SpaceX’s lockup is staggered. There is no single 180-day cliff where everything unlocks at once. Instead, shares free up in stages tied to earnings windows, price triggers, and fixed-day milestones, a ladder rather than a cliff. Based on the IPO prospectus as reported across filings coverage, the schedule looks like this:
What “the 180-day block” means in shares: it is everything except the ~639 million-share public float and the ~7.8 billion shares in the Musk and extended-investor groups that stay locked into 2027. That comes to roughly 4.6 billion shares. The tranche sizes in the table below are the exact “up to” figures from the prospectus lockup section.
Eligible under modeled releases: up to 1.92 billion shares across 5 tranches, most recently Day-105 tranche (September 24, 2026). Including the IPO, modeled eligibility is about 19% of an estimated 13.57 billion common-share base. This is not measured public float.
The August 6 tranche was the first and biggest release of 2026: it landed the second trading day after Q2 earnings (August 4), with SPCX coming into it near all-time lows around $108 before rising about 6% on the day.
The price-trigger bonus did not fire: the extra 455.8 million shares required SPCX to close at least 30% above the $135 IPO price ($175.50+) on 5 of the 10 trading days into earnings. It did not, so those shares stay locked and roll into the December 8 expiry.
New supply from M&A: on August 14, 2026 SpaceX closed its acquisition of Cursor (Anysphere), issuing 389,289,254 new Class A shares (about $60 billion of stock at the deal’s pricing). That is new share count rather than a lockup release; when those shares can actually trade depends on resale registration.
Next dated milestone: October 9, 2026: up to 328.4 million shares (Day-120 tranche). Earnings-triggered tranches also remain; their dates are pending and may precede the next dated milestone.
Share counts are the exact “up to” figures from SpaceX’s IPO prospectus (424B4 lockup section); earnings-triggered rows depend on when SpaceX actually reports. Statuses on this page are updated at each milestone.
Source: final prospectus, pp. 259-260 and 272-273. Dates are contractual triggers. Weekend releases enter this model at the next regular trading session; after-close restrictions are not counted before the close. June 12, 2027 has separate founder and extended-investor pools, followed by the final Q2 2027 earnings tranche. The share denominator is an estimate based on the Q2 share count and merger filing.
A few things stand out. The price trigger was clever (strength into earnings would have unlocked more supply earlier), but it missed: SPCX went into its August 4 report near all-time lows, so the 455.8 million bonus shares stay locked until December 8. And the truly massive supply is a 2027 story. Musk’s block plus the extended-investor group is on the order of 7.8 billion shares, more than 60% of pre-IPO shares, and none of it can hit the market until 2027 at the earliest. So 2026 is a series of meaningful but partial unlocks; 2027 is when the float really opens up.
These tranche sizes and dates come from the IPO prospectus as summarized in filings coverage, and earnings-triggered dates move with SpaceX’s actual reporting calendar. Treat them as the reported structure, not gospel, and confirm exact figures against SpaceX’s S-1 / 424B4 on SEC EDGAR before making any decision around a specific date.
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Why Lockup Expirations Move a Stock
Two forces are at work. The first is simple supply and demand: a lockup expiration increases the float, and a name whose price was inflated by a thin float now has more sellers in the market. The second is signaling. Heavy insider selling can be read as a lack of confidence, though it is often just diversification or long-awaited liquidity for employees, so the signal is noisy.
What does the data say? The classic study, Field and Hanka (2001), examined nearly 2,000 lockup expirations and found a statistically significant abnormal return of about negative 1.5% over a three-day window around expiry, plus a permanent jump of roughly 40% in trading volume. The price effect is larger, on the order of 2 to 4%, for venture-backed and low-float names, exactly the category SPCX falls into.
Lockup-expiration dates are public and well telegraphed in the prospectus, so the market often prices them in ahead of time. That is precisely why the average effect is a modest dip, not a collapse. The most reliable effect is not the price move at all, it is the surge in volume. Plenty of stocks drift lower into a known expiration and then stabilize once it passes and the feared selling does not materialize.
What History Says: Small-Float IPOs and Their Lockups
SPCX is not the first company to come public on a tiny float and then face a wave of unlocks. The history is instructive, and it is more nuanced than buy-the-rumor or sell-the-expiration.
Facebook (2012) is the canonical case. It IPO’d at $38 on a small float against roughly 2.7 billion total shares, with staggered lockups through late 2012 and into 2013. The stock slid to an all-time low near $17.55 by early September 2012, between the early unlocks. Then came the twist: on November 14, 2012, the day its biggest tranche expired, freeing 770 to 800 million shares including much of Mark Zuckerberg’s stake, the stock rose about 13%. The market had braced for a flood that never came; insiders mostly held, which read as confidence. Facebook first closed back above its $38 IPO price in mid-2013 once earnings resolved the real worry (mobile ad revenue). The lesson: the expiration everyone fears can mark the bottom.
Beyond Meat (2019) shows the other side. It came public on roughly a 16% float, ran more than 800% to about $235, then on its October 29, 2019 lockup expiration fell about 22% in a single day, even though the earnings report that same day was strong, as insiders rushed for the exits. A tiny float magnifies both the melt-up and the unlock crush.
Rivian (2021) is the cautionary nuance. It floated about 18% of its shares, peaked near $172, but was already down roughly 75% amid the 2022 growth-stock and EV selloff before its lockup even arrived. When the lockup expired in May 2022, it knocked off another 21% in a day. The lesson: a lockup is usually an accelerant, not the sole cause. Most of the damage came from the broader tape; the unlock added fuel.
One useful contrast: Coinbase used a direct listing in 2021, not a traditional IPO, so it had no lockup at all. Existing holders could sell from day one, which front-loaded the selling that a lockup normally delays. It is a reminder that the lockup is a mechanism that postpones supply, and SPCX postponed a lot of it.
What to Expect From SPCX Over the Next Year
The calendar above is the roadmap. The first real supply test came on August 6, 2026, when the Q2-earnings tranche of up to 911.5 million shares unlocked; the stock absorbed it and bounced about 6%. The 30%-above-IPO price trigger missed, so no bonus shares released, which is the market quietly throttling the scarcity. Each tranche through the fall expands the pool of potentially eligible shares, which tends to compress the scarcity premium and soften the squeeze dynamics that drove the early run.
December 8, 2026 marks the full 180-day milestone. But the dates that matter most for raw supply are in 2027, when the extended investors and then Musk’s roughly 6.4 billion shares come free. That block dwarfs everything in 2026.
The balanced view: expirations usually bring elevated volatility and a modest, telegraphed dip, not a guaranteed crash. The market knows these dates. The real risk is concentration and context. If the stock is weak into a major unlock, the added supply can accelerate the move (the Rivian pattern). If it is strong and insiders hold, an unlock can pass quietly (the Facebook pattern). Actual float depends on sales, option exercises, resale restrictions and changes in shares outstanding.
How Traders Watch the Lockup Calendar
For active traders, the lockup schedule is a volatility calendar. Implied volatility and option premiums often rise into known catalysts, and a lockup date is a known catalyst. Some traders hedge long exposure with puts or put spreads into a major unlock, or trade the volatility itself rather than guessing direction. The 2x long and short SPCX ETFs amplify moves in either direction, which makes them especially risky around these dates.
If you want the mechanics of trading the stock through these events, our companion guide on how to trade SpaceX (SPCX) options covers strikes, implied volatility, and the leveraged ETFs in detail, and our explainer on implied volatility explains why premiums swell into events like these. For the broader sector, see our roundup of space stocks for investors.
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Frequently Asked Questions
When is the first SpaceX (SPCX) lockup expiration?
The first major unlock came with Q2 2026 earnings (reported August 4, 2026): on August 6, 20% of the 180-day block (up to 911.5 million shares) became eligible to sell. The additional 455.8 million bonus shares did not release (SPCX was not trading 30% above its $135 IPO price into earnings), so they roll into the December 8 expiry instead. The next dated milestone is October 9, 2026: up to 328.4 million shares. Earnings-triggered tranches also remain; their dates are pending and may precede the next dated milestone.
When does the full 180-day SpaceX lockup expire?
The 180-day lockup block fully expires on December 8, 2026. Before that, shares release in staggered tranches tied to earnings windows and fixed-day milestones rather than all at once.
When does Elon Musk’s SpaceX stock unlock?
Musk’s roughly 6.4 billion shares are locked for 366 days, until June 12, 2027, with no early-release provisions. That block, plus a separate extended-investor group unlocking in 2027, represents the largest wave of supply.
How much of SpaceX is actually trading right now?
The IPO sold approximately 638.9 million shares including the over-allotment. Modeled releases add up to 1.92 billion, for 2.56 billion potentially eligible shares (19% of an estimated 13.57 billion common-share base). The share base combines the July 28 reported count with the August 14 merger shares; later issuance and net RSU settlements are not reconciled here. Eligibility is not evidence of an actual sale or freely traded float. The final extended-investor tranche depends on Q2 2027 earnings.
Does a lockup expiration always crash the stock?
No. On average, studies find a modest abnormal return of about negative 1.5% over a few days plus a large jump in volume, and because the dates are public the market often prices them in ahead of time. Facebook actually rose about 13% on its biggest lockup day. The effect is real but usually moderate and far from guaranteed.
Disclaimer: Pure Power Picks is not a licensed financial advisor. All content is for educational and informational purposes only and should not be considered investment advice. Lockup dates and tranche sizes are based on prospectus coverage and may change; verify against SpaceX’s SEC filings. Options and IPO trading involve substantial risk of loss. Past performance does not guarantee future results.
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The PPP Team is the research and editorial team behind Pure Power Picks. We trade stocks and options and publish the work as we do it, with every alert tracked in public. Publishing since 2020. How we research and correct our work is written out in our editorial standards. Our content is strictly educational, never advice.
Good call, I’ve made the updates to the post.
Do not say things like “roughly 20% of the 180-day block…” that’s a percentage of a percentage and make it impossible to get a real idea of the number. Just say the estimated number of shares.
“When to buy?”, the age old question! If you are investing, you can’t go wrong with buying blood (big dips) and always dollar cost averaging! We are not financial advisors and this is not financial advice.
After reading all this l am still not sure how it works. When SpaceX unlocks logic says there should be a rush to buy because the excess stocks available should make it go down. At the same time the rush to buy will make it go up. So when do l buy ? When it settles a while after the opening or at first ?