When STDN insiders can sell
Standard Nuclear, Inc. · IPO prospectus filed 2026-07-16 · Single cliff · 180-day lock-up
That is the calendar date the clause computes to, counted from the prospectus date. It is the only date computable without knowing a future earnings date, which is why everything that could pull it earlier is printed below it on this page rather than folded into it.
How much stock, against how much trades
"Absorb days" is the shares coming free divided by average daily volume: how many full sessions of STDN's entire turnover the release amounts to. It is a ratio, not a forecast — it does not know who wants to sell, and a founder with no intention of selling counts the same as a fund that has been waiting six months.
Exactly 150,673,542 shares, against 238,640 shares a day averaged over 20 sessions. Volume source: yahoo-finance2 daily bars (symbol not in our price table), through 2026-11-06. Dollar volume $2.9M a day. Heaviest third of the cohort.
Our call: Pressure
STDN sits in the heaviest third of a cohort of 47 deals — lightest third at or below 54.1 sessions, heaviest at or above 109 sessions. The call is cohort-relative, not a fixed threshold, so the same absorb-day figure could read differently against a different month's IPOs. Expected excess return against SPY: negative.
The lock-up clause, in the issuer's words
Every other free lock-up calendar tells you 180 days and moves on. This is the actual sentence the date above was computed from, so that if the words do not support the number, the number is wrong and the filing is one click away.
Lock-Up Agreements In connection with this offering, we, our directors, executive officers and our other existing security holders have entered into lock -up agreements or are subject to market standoff provisions in agreements with us that, for a period of 180 days after the date of this prospectus, and subject to certain exceptions, prohibit us and them from offering for sale, selling, contracting to sell, granting any option for the sale of, transferring or otherwise disposing of any shares of our Class A common stock and of any securities convertible into or exercisable for shares of our Class A common stock (including our Class B common stock), without the prior written consent of BofA Securities, Inc. and Goldman Sachs & Co. LLC (the representatives ). See Underwriting for additional information. Voting Rights Upon the completion of this offering, we will continue to have two autho……
Where the share count comes from
150,673,542 shares — derived: shares outstanding after the offering, less the shares sold in it. A count the prospectus prints and a count derived from two of its other numbers are not the same quality of claim, so which one this is gets said rather than implied.
| Shares outstanding after the offering | 160,673,542 |
| Shares sold in the offering | 10,000,000 |
| Underwriters' over-allotment option | 1,500,000 |
| Locked up, coming free at expiry | 150,673,542 |
…nderwriters option to purchase additional shares of Class A common stock 1,500,000 shares Class A common stock to be outstanding after this offering 149,095,234 shares (or 150,595,234 shares if the underwriters exercise their option to purchase additional shares of Class A common stock in full) Class B common stock to be outstanding after this offering 11,578,308 shares Total Class A and Class B common stock to be outstanding upon completion of this offering 160,673,542 shares (or 162,173,542 shares if the underwriters exercise their option to purchase additional shares of Class A common stock in full) Use of proceeds We intend to use the net proceeds of this offering for working capital and other general corporate purposes.
Exceptions written into the lock-up (3)
Each of these is a route by which STDN shares can move before 2027-01-12. The 10b5-1 carve-out is the one worth reading twice: it lets insiders put a selling plan in place during the lock-up, so the first sales can be automatic and immediate rather than discretionary and later.
- bona fide gift or charitable transfer
- estate planning or family transfer
- option exercise or RSU settlement
The agreements of our executive officers, directors and substantially all of our other existing security holders, do not apply to lock -up securities that are transferred or otherwise disposed of (1) as a bona fide gift or gifts, including, without limitation, gifts to a trust, to a charitable organization or educational institution, or for bona fide estate planning purposes, (2) upon death or by will, testamentary document or intestate succession to the legal representative, heir, beneficiary or a member of the immediate family of such holder, (3) to any immediate family member or any trust, partnership, limited liab…
…osed transaction in which: we have been or are to be a participant; the amount involved exceeds $120,000; and any of our directors, executive officers or holders of more than 5% of any class of our capital stock, or any immediate family member of or person sharing the household with any of these individuals, had or will have a direct or indirect material interest. All information below has been adjusted for the 2 -for-1 stock split of our capital stock that was effected on July 6, 2026. Class B Exchange Agreement and Class B Equity Exchange Agreement To facilitate the Class B Stock Exchange, we will enter into the Class B Exchange Agreement with Standard Nuclear Trust, an entity affiliated with Mr.
…utstanding as of June 30, 2026, in each case, after giving effect to the Preferred Conversion, Class B Conversion and Class B Stock Exchange, and excludes: 12,455,722 shares of our Class A common stock issuable upon the exercise of stock options outstanding as of June 30, 2026, with a weighted -average exercise price of $0.60 per share, granted under the 2025 Stock Plan; 3,131,224 shares of our Class A common stock reserved for future issuance under the 2025 Stock Plan as of June 30, 2026, which 2025 Stock Plan will be terminated effective upon the effectiveness of the registration statement of which this prospectus forms a part; 18…
How this reading of STDN could be wrong
The lock-up period is restated 5 times in this prospectus. Issuers repeat the clause on the cover, in the summary, in the risk factors and in the underwriting section, and the wording is not always identical. The parser resolved them to one period; if a reader finds a restatement that disagrees, the quote above is the one it used.
The volume is a vendor's, not ours. STDN is not in our own price table, so average daily volume comes from yahoo-finance2 daily bars (symbol not in our price table). Vendor bars for recently listed symbols are the ones most likely to be wrong.
Only 20 sessions of volume history. This is a recent IPO, and early volume is dominated by the offering itself. An average over 20 sessions of a stock that has barely traded is the weakest input on the page, and absorb days inherits every bit of that weakness.
The parser can misread a filing. That is why every number here is printed next to the words it came from. Earlier versions of this parser read the underwriters' 30-day over-allotment window as a 30-day lock-up on five deals, and double-counted one issuer's share total because the offering summary appears on both the cover and in the summary section.
Also unlocking in 2027-01 (4)
Lock-ups cluster, because IPOs cluster: these priced in the same window as STDN and come free in the same month. Several heavy releases landing together is a different situation from one.
| Deal | Expiry | Shares free | Absorb days |
|---|---|---|---|
| CSQR Csquare, Inc. | 2027-01-12 | 105.0M | 50.6 sessions |
| SCTX Scribe Therapeutics, Inc. | 2027-01-23 | — | — |
| REF Reformation Inc. | 2027-01-26 | 49.6M | 108 sessions |
| APMD Apnimed, Inc. | 2027-01-27 | — | — |
Learn to read these clauses yourself
The flow arithmetic on this page — shares unlocking divided by average daily volume, and why the clause has to be read rather than assumed — taught step by step, free.
Radar built 2026-11-07 from EDGAR full-text search over 424B4 filings · all 80 parsed lock-ups and the scoreboard · STDN's prospectus on EDGAR · what funds carried these companies at before listing