Tools · Parsed From 424B4 And S-1 Filings · Updated 2026-11-02

IPO Lock-Up Calendar

Every scheduled lock-up release we can source, with the share count expressed as a percentage of the float and of shares outstanding, because those two numbers routinely point in opposite directions. Early-release price triggers are resolved against where the stock actually trades rather than repeated as a condition, and any figure that fails to reconcile is left out with the reason attached.

When Is the Next IPO Lock-Up Expiry?

CBRS on November 9, 2026, with no share count we are willing to publish yet. Being eligible to trade is not the same as being sold, and the price usually reacts before the date rather than on it.

2 of 21 releases

  • Nov 9, 2026 ~Scheduled

    CBRS: Main lock-up expiry: the balance

    The earlier of 6:00am ET on the second trading day after the quarter ending September 30, 2026 is reported, and 180 days after the May 13, 2026 prospectus date, which is November 9, 2026

    Count not published

    Everything still locked. No count is published because the schedule's percentages are of Eligible Securities, a base that includes options and RSUs convertible into Class A stock as well as outstanding shares, so the residual cannot be had by subtracting the 171.1 million released earlier from the roughly 192 million restricted shares implied by the share register. The two bases are not the same thing and the difference is not disclosed.

    Resolved: On what is known today, November 9 binds. Cerebras has not announced a Q3 reporting date and has filed no 8-K scheduling one; the two aggregators that project a date both put it at November 11, which is after November 9. Only a report on or before about November 5 would pull the expiry forward, and Cerebras reported Q2 on August 12 and Q1 on June 23, both later in the quarter than that would require. November 9 is a Monday.

    Filing source ↗
  • Dec 8, 2026Scheduled

    SPCX: 180-day expiry: the balance

    December 8, 2026, printed in the prospectus as the date 180 days after its June 11, 2026 date, on or after which all of the restricted shares may be Transferred.

    Count not published

    Everything left in the 180-day pool, plus the 455.8 million shares whose price condition failed and rolled here. No count is published because the pool total is derived rather than filed, so a residual computed from it would inherit that derivation.

    Filing source ↗
Share

This Week on the Calendar

The lock-up dates that fall this week, day by day, numbered the way the issuer pages count them. Select a calendar to lay the earnings, economic data, Fed and FDA calendars over the same five days, or download the week as one image.

What to show on the calendarShowDownload as image

Week of November 2-6

Week 1 of 4

Mon

Nov 2

Data & events

Nothing scheduled

Tue

Nov 3

Data & events

Nothing scheduled

Wed

Nov 4

Data & events

Nothing scheduled

Thu● Today

Nov 5

Data & events

Nothing scheduled

Fri

Nov 6

Data & events

Nothing scheduled

Times are Eastern. An FDA date that falls on a weekend sits on the Friday before it, with the action date on the row.

Percentage of What?

This is the whole reason the tool exists. A headline that says 911.5 million shares unlock, worth $116 billion is frightening and unusable, because it is a numerator with no denominator. Against SpaceX's 555.6 million share float that tranche is +164%, more than doubling the tradeable stock in a day. Against 13.1 billion shares outstanding it is 7%. Both are true and they support opposite conclusions, so every row above gives you the base.

The float can be understated

If underwriters exercised the over-allotment, those shares are in public hands too. A float quoted on the base offering alone makes every percentage look bigger than it is. Where that applies, the wider base is shown in brackets on the row.

Dollar values are snapshots

The same 911.5 million shares were reported at $123bn, $116bn and about $100bn inside two weeks, purely because the price moved. The share count is the durable number, so every dollar figure here carries the price and date it was struck at.

Conditions get resolved

"A further 455.8 million shares could release under certain conditions" is a research gap, not a sentence. The condition was a price 30% above the IPO price against a stock below it, so it could not fire, and the shares rolled to a later date. That is the useful half.

Releases With No Date Yet

These are real releases waiting on an event, usually an earnings report whose date has not been announced. They are kept out of the dated calendar rather than given a guessed date.

  • SPCX: Conditional early release, price trigger455.8m (+82% of float, 3.5% of shares out)

    Would have released alongside the August 6 tranche. The condition failed, so these shares roll to December 8.

    Resolved: Not met, and it was never close. The stock traded near $110 through most of the window and its best close in it was $125.33 on August 4, about 29% below the trigger, which then had to be cleared five times in ten sessions. The shares do not disappear: they roll into the December 8 release, making that date larger.

  • SPCX: Founder and selected insiders

    Two cohorts, both on a 2027 schedule the prospectus sets out. The extended lock-up group releases in stages: 20% on the second full trading day after the Q4 2026 results, a further 10% on March 18, 2027, a further 20% after the Q1 2027 results, a further 10% on May 17, 2027, a further 20% on June 12, 2027, and the balance after the Q2 2027 results. The founder’s shares release on June 12, 2027, 366 days after the prospectus date, and nothing releases them earlier.

    The prospectus gives the two cohorts together rather than separately: the shares under the extended lock-up plus the founder’s shares are approximately 7.8 billion, and more than 63% of the 12,520,309,620 shares outstanding immediately before the offering. The split between them is not disclosed. Mr. Musk is listed as the beneficial owner of 849.5 million Class A shares and 5,569.1 million Class B shares, the latter including 350.0 million underlying options, so on those figures the founder accounts for about 6.1 billion of the 7.8 billion in shares actually outstanding and the extended group for the remaining 1.7 billion. Beneficial ownership and lock-up cohort are not the same list, so that split is ours and approximate.

The Denominators, Issuer by Issuer

Every percentage above divides by one of these. They are published in full, with dates, so any figure on this page can be checked rather than trusted.

FIG: Figma, Inc.

NYSE · Listed Jul 31, 2025 at $33

Lock-up complete, checked Sep 14, 2026: The Extended Lock-Up Agreement 8-K was read directly on 2026-08-29 and its final tranche is the last restriction it creates: the agreement releases the balance on the earlier of the second trading day after the Q2 2026 earnings announcement or August 31, 2026, and Figma announced Q2 2026 on August 5, so the balance freed on August 7, 2026. The standard 180-day lock-up on non-signing holders had already expired on January 27, 2026. No release remains on either instrument, and both tranches below are marked released.

Float
371m
reported float, as of Aug 6, 2026
Shares outstanding
528.4m
float is 70.2% of the company, as of Aug 6, 2026
Offering
36.94m at $33
$1.22bn gross, over-allotment status unresolved

Which shares the float counts: This is the float immediately BEFORE the final Extended Lock-Up release, which is the denominator the release should be measured against. No current independent float figure could be sourced (the aggregator floats found were stale post-IPO snapshots of about 43.5 million shares against a 410 million share register, which predates the January and quarterly releases). The float here is derived: 528.38 million shares outstanding, less the roughly 77.7 million Class A shares then restricted under the Extended Lock-Up Agreement, less the 79.7 million Class B shares held by insiders (the September 30, 2025 10-Q count, the latest sourced). That gives about 371 million shares. It is a ceiling on the tradeable float rather than a measured one, so percentages of float on this issuer are conservative: if the true float was smaller, the release was a larger share of it. After the August 7, 2026 release the restricted block is gone, so the tradeable Class A count is now about 448.7 million (528.4 million outstanding less the 79.7 million Class B), on the same derivation.

Across the 1 release on this issuer that carry a published share count, 77.7m shares become eligible: +20.9% of the float and 14.7% of shares outstanding, taking the tradeable float to about 1.2x its present size. That total excludes 1 release with no publishable count, so the real figure is larger.

Figma's lock-up history is a study in staggered supply. The original structure released about 25% of locked shares early on September 5, 2025 after a price condition was met, another slug around the Q3 2025 report in November, and the balance at the standard 180-day mark on January 27, 2026. But on August 30, 2025 the company signed an Extended Lock-Up Agreement with holders of about 54.1% of its Class A stock, swapping their January freedom for staggered quarterly releases through June 2026 with the balance held to August 31, 2026. That final balance is the row below. It freed on August 7, 2026, two trading days after the August 5 Q2 report, rather than on the August 31 backstop that lock-up trackers still list, and it was the last lock-up event on this issuer. The stock's slide from a $115.50 first-day close to the low-$20s by mid-2026 means these shares arrive at a fraction of the prices earlier releases sold into.

What we could not confirm

  • The Extended Lock-Up Agreement 8-K has now been read directly (2026-08-29); the 10-Q behind the share counts has not.
  • The greenshoe: whether underwriters exercised the over-allotment could not be confirmed this session, so the option's size and status are left unresolved and the float derivation does not depend on it.
  • No current independent float figure exists in the sources found; the float published here is a derivation described in the float note.
  • No regular-session close could be confirmed from two sources this session, so no dollar values are shown for this issuer.
  • The exact dates and sizes of the quarterly staggered releases through June 2026 under the extended agreement were not recoverable from coverage, so those past releases are described in the notes rather than published as dated rows.

Filings: 8-K (Extended Lock-Up Agreement) (Sep 3, 2025) ↗ · 10-Q (Nov 6, 2025) ↗

CBRS: Cerebras Systems Inc.

Nasdaq · Listed May 14, 2026 at $185

Float
34.5m
all shares sold, greenshoe included, as of Aug 5, 2026
Shares outstanding
226.5m
float is 15.2% of the company, as of Aug 5, 2026
Offering
34.5m at $185
$6.38bn gross, including 4.5m of over-allotment taken up in full

Which shares the float counts: All 34,500,000 shares sold at the May 15 closing are counted, including the 4,500,000 over-allotment shares underwriters took up in full. That is the complete offering rather than the base, so percentages of float on this issuer are stated on the wider base.

Across the 10 releases on this issuer that carry a published share count, 171.1m shares become eligible: +496% of the float and 75.5% of shares outstanding, taking the tradeable float to about 6x its present size. That total excludes 1 release with no publishable count, so the real figure is larger.

The lock-up is a nine-step staircase read straight out of the prospectus, not a cliff. Each step releases a fixed percentage of each holder class's Eligible Securities: 7.5% to non-executive employees on the first trading day, another 7.5% on the second once a price trigger was met, 15% to directors, officers and non-employee holders two trading days after the Q1 report, 16.7% to everyone two trading days after the Q2 report, 6.7% on each of August 19, September 2 and September 16, and 8.9% on each of September 30, October 14 and October 28. The balance waits on an earlier-of test: two trading days after the September quarter is reported, or 180 days after the prospectus date, which is November 9. That makes November 9 an outer bound a reporting date can pull forward, which is the opposite of how a lock-up date usually moves. The nine dated steps add to about 171.1 million shares, roughly five times the 34.5 million share offering that created the float and about 75% of shares outstanding, released over five months rather than on one day.

What we could not confirm

  • The August record said the reported tranche counts could not both be true, because a reported early release of over 60 million shares plus a reported 171 million at the main expiry came to 231 million against roughly 192 million restricted shares. The prospectus shows why nobody had to be wrong: 171.1 million is the cumulative total released across the nine dated steps BEFORE the main expiry, not the amount released at it, and the 60-odd million figure is the subset of that total released through the Q2 step (69.1 million). The two were double-counted. The filed per-date counts are now published and they reconcile.
  • The amount released at the main expiry is still not published, and this is a base mismatch rather than a missing figure. The schedule's percentages are of Eligible Securities, which include options and RSUs convertible into Class A stock; the 192 million restricted-share figure is derived from the share register. Subtracting one from the other would produce a number with no defensible meaning.
  • The Q1 step's date is approximate by one session: the 8-K establishes June 23, 2026 as the announcement date but not whether it came before the open or after the close. The closes around either candidate date were not retrieved from two sources this session, so that step carries no price reaction.
  • The Q3 2026 reporting date, which is the one thing that could pull the main expiry earlier than November 9, has not been announced and no 8-K scheduling it has been filed as of October 22. The November 11 date in circulation is an aggregator projection from past reporting dates, not a company statement.
  • Shares outstanding and float are still as of August 5, 2026 and were not refreshed this session. Every percentage on this issuer is struck against those denominators, and the count has almost certainly grown through option exercises and RSU settlement since.
  • The prospectus permits sell-to-cover sales outside the schedule to meet tax withholding on RSU settlement, estimated at up to about 0.2 million shares around June 24, 2026 and 0.4 million around August 18, 2026, on an assumed 46.9% withholding rate. These are not tranches and are not counted above. Secondary coverage put the August figure at about 1.2 million; the prospectus says 0.4 million, and the filing is preferred.
  • The reference price behind every dollar value is the October 21 close of $117.98. This stock has moved more than 15% in a session twice since August, so the dollar column is a snapshot struck on October 21 rather than a live valuation.

Filings: 424B4 (May 13, 2026) ↗ · S-1 (Apr 17, 2026) ↗

SPCX: Space Exploration Technologies Corp.

Nasdaq · Listed Jun 12, 2026 at $135

Float
555.6m
base offering only, as of Aug 5, 2026
Shares outstanding
13.1bn
float is 4.2% of the company, as of Aug 5, 2026
Offering
638.9m at $135
$86.2bn gross, including 83.33m of over-allotment taken up in full

Which shares the float counts: This float counts the base offering only. Underwriters exercised the over-allotment in full for a further 83,333,333 shares, so 638,888,888 Class A shares were actually sold into public hands at the June 15 closing. Every percentage-of-float on this issuer is therefore stated on the narrower 555.6 million base that this site has published since the IPO; the wider 638.9 million base is shown alongside it on every row so the reader can see how much of the headline percentage is an artefact of which shares got counted.

Across the 7 releases on this issuer that carry a published share count, 2.96bn shares become eligible: +533% of the float and 22.6% of shares outstanding, taking the tradeable float to about 6.3x its present size. That total excludes 3 releases with no publishable count, so the real figure is larger.

The lock-up is a staircase rather than a cliff: 20% released off the Q2 report, then five 7% tranches at fixed day counts every two to four weeks into late October, then an earnings-triggered release at Q3, then the balance at the 180-day mark. The design reduces the size of any single shock and replaces it with four months of scheduled, known supply. Every date here counts from the June 11, 2026 prospectus date, the fixed milestones included. This site counted those milestones from the June 12 first trade until August 17, 2026, one day later than they actually fall.

What we could not confirm

  • The prospectus was re-read from sec.gov on 2026-11-02, so the lock-up terms here no longer rest on published coverage. What the filing does not give is the size of the restricted pool, below.
  • The restricted pool of roughly 4.6 billion shares is derived from the first tranche being 20% of it, not read out of a filing. The prospectus corroborates it by subtraction: it puts the founder’s and extended lock-up shares at approximately 7.8 billion and at more than 63% of the 12,520,309,620 shares outstanding before the offering, and 7.8 billion is 62.3% of that count, so the real figure is above 7.88 billion and the 180-day pool below 4.64 billion. Against the 4.56 billion derived here the two agree to within about 2%. Every 7% tranche count still rests on the derivation.
  • The float is the base offering only and excludes the exercised greenshoe. See float_note.
  • The reference price behind every dollar value is the October 30 close of $134.72, confirmed to the cent by StockAnalysis.com and Investing.com. The stock fell 6.37% in that one session and 8.66% across the week, so the dollar column is a snapshot struck on October 30 rather than a live valuation.
  • The Q3 earnings-triggered release of October 22 has a date and a filed percentage, 28% of the restricted shares, but no published share count. 28% of the derived 4.6 billion pool is near 1.3 billion shares, which is what third-party trackers carry, but the pool is derived and no filing gives the count.
  • Shares outstanding here stay at the rounded 13.1 billion the rest of this site uses, which is the base-offering total. The prospectus gives 13,159,198,508 with the over-allotment exercised in full, about 0.5% higher. Flagged rather than changed, because every percentage already published is struck on 13.1 billion.

Filings: 424B4 (Jun 11, 2026) ↗ · Our coverage: spcx august 6 unlock 911 million shares flood market

How This Is Built

The "Lock-Up Agreements" and "Shares Eligible for Future Sale" sections of a 424B4 or S-1 are parsed for four things: the day count and what it runs from, any earnings-triggered expiry, any early-release price trigger, and the share counts and pool percentages attached to them. That parse produces a candidate, never a published row.

A row is only published once its share count has both denominators behind it, its dollar value has a price and a date, and any condition has been resolved rather than repeated. Where a reported figure fails to reconcile against the share register, the date is published and the count is not, with the arithmetic that killed it shown on the row. Each row is graded Filing, Tier 1 or Reported so you can see how far from the prospectus a number is.

The whole calendar is available as JSON and CSV, licensed CC BY 4.0. Both carry both percentage bases on every tranche, along with the source grade and the price and date behind any dollar figure, so a spreadsheet cannot accidentally reproduce the numerator-without-a-denominator problem this page exists to fix.

IPO Lock-Up FAQ

When is the next IPO lock-up expiry?
The next release on this calendar is CBRS on November 9, 2026, with no share count we are willing to publish yet. A lock-up expiry makes shares eligible to trade; it does not mean they are sold.
What is an IPO lock-up?
A contractual promise by insiders, employees and pre-IPO investors not to sell their shares for a set period after the offering, usually 180 days, written into the underwriting agreement and described in the "Lock-Up Agreements" section of the 424B4 or S-1. When it expires, those shares become eligible to trade.
Why does this calendar show two percentages for every tranche?
Because a share count on its own is unusable, and the two bases can support opposite conclusions. A release of 911.5 million shares against a 555.6 million share float more than doubles the tradeable stock, which sounds catastrophic. The same 911.5 million shares against 13.1 billion shares outstanding is about 7% of the company, which sounds trivial. Both are true. Showing only one is how a reader gets misled, so every row here carries both.
Do shares always fall when a lock-up expires?
No. Eligible to trade is not the same as sold, and markets front-run a known date, so the weakness usually arrives before the expiry rather than on it. Studies of lock-up expiries find an average abnormal return of roughly -2%, and the largest single unlock in Facebook history was followed by a 12.6% rally, because clearing the overhang removed the uncertainty.
What is an early-release price trigger?
A clause that frees part of the locked stock ahead of schedule if the share price holds above a set level, typically a percentage of the IPO price, for a number of trading days inside a window. It matters because a trigger far above the current price cannot fire, and the shares it governs do not disappear: they usually roll into the next scheduled release, making that date larger.
Where do these figures come from?
The lock-up terms come from the "Lock-Up Agreements" and "Shares Eligible for Future Sale" sections of each issuer's 424B4 or S-1, linked on every issuer panel, together with the coverage cited on each row. Every row is graded by how well sourced it is, and where a reported share count fails to reconcile against the share register it is not published at all. Last updated November 2, 2026.

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