An NT 10-Q Buys Five Calendar Days, and Only Under Three Conditions

A late-filing notification is one of the shortest documents a public company ever puts on EDGAR, and it is one of the most consistently over-read. The filing appears as an NT 10-Q or an NT 10-K, a headline says the company missed its deadline, and the quote reprices on the headline. What the document does is narrower than the headline. It opens a fixed extension window, and the extension attaches only if three separate conditions in Rule 12b-25 are satisfied — one of which cannot be evaluated on the day the notification appears.

Two results below were worked out for this article rather than taken from a summary. The first is arithmetic: in every filer tier but the last, the extension the rule grants ends on the exact day the next tier's ordinary deadline falls. The second is a count of how many of these notifications were filed month by month over six months of 2026, taken from EDGAR's own index.

What the notification is, and what it is not

Rule 12b-25(a) sets the trigger and the timing. When a required report is not filed within its prescribed period, the rule directs that “the registrant, no later than one business day after the due date for such report, shall file a Form 12b-25” and that the form “shall contain disclosure of its inability to file the report timely and the reasons therefore in reasonable detail.”

Three things follow that are worth separating. The notification is due one business day after the report was due, so its appearance on the tape already tells you the original deadline has passed. It is a disclosure obligation in its own right rather than a request for relief: nothing in 17 CFR 240.12b-25 conditions the extension on an approval, and every condition the rule sets out in paragraph (b) is a condition on the registrant's own conduct. And the reasons stated in it are the registrant's own characterization, filed under a standard of “reasonable detail” rather than an audit.

The form itself, published as Form 12b-25, has four parts: registrant information, the representations required by Rules 12b-25(b) and (c), a narrative part, and an other-information part. The narrative part asks the filer to “state below in reasonable detail why” the report could not be filed in time. That is the part most coverage quotes. It is not the part with the numbers in it.

Three conditions, and the third one is decided later

The extension does not come from filing the form. It comes from paragraph (b), which says that a report not timely filed because the registrant cannot file it “without unreasonable effort or expense” will be “deemed to be filed on the prescribed due date for such report if:” and then lists three conditions.

• (b)(1) — the form is filed in compliance with paragraph (a), together with the exhibit required by paragraph (c) when that exhibit applies.
• (b)(2) — the registrant represents in the form that the reason causing the inability “could not be eliminated by the registrant without unreasonable effort or expense; and” that the report will be filed inside the window. Paragraph (b)(2)(ii) sets two windows: an annual, semi-annual or transition report “will be filed no later than the fifteenth calendar day following the prescribed due date; or” a quarterly report or a Form 10-D distribution report “will be filed no later than the fifth calendar day following the prescribed due date; and”.
• (b)(3) — “The report/portion thereof is actually filed within the period specified by paragraph (b)(2)(ii) of this section.”

The third condition is the one that matters for position management, because it is the only one that cannot be checked on the day the notification appears. Conditions one and two are visible in the document. Condition three is a future event. Until it happens, the phrase “deemed to be filed on the prescribed due date” describes a status the filing is reaching for, not one it has.

The five days end where the next tier already stood

The length of the window is set by the report, not by the company. Quarterly reports get five calendar days; annual reports get fifteen. Put those against the ordinary deadlines and a pattern appears that neither number carries on its own.

Under the general instructions to Form 10-Q, a quarterly report is due 40 days after the end of the fiscal quarter for large accelerated filers and accelerated filers, and 45 days for all other registrants. Under the instructions to Form 10-K, an annual report is due 60 days after fiscal year end for large accelerated filers, 75 days for accelerated filers, and 90 days for everyone else.

Now add the extension. For the quarterly report, 40 plus 5 is 45 — the day the next tier down was due anyway. For the annual report, 60 plus 15 is 75, which is the accelerated filer deadline, and 75 plus 15 is 90, which is the deadline for all other registrants. Only the bottom tier has nowhere to land: 45 plus 5 is 50 for a quarterly report, and 90 plus 15 is 105 for an annual one, and no ordinary deadline sits there.

That is a structural point rather than a trading signal, but it changes what the window means. A large accelerated filer using the full annual extension is filing on the calendar date that a smaller registrant of the tier below would have met on time. The extension does not move a filer into unusual territory. It moves it onto a date that is ordinary for somebody else.

Putting the window on a calendar

Because the window is counted in calendar days from a due date that is itself counted in calendar days, the end of it can land on a Saturday, a Sunday or a holiday. Take the quarter ending 30 September 2026. Forty days after that is Monday 9 November, and the fifth calendar day after Monday 9 November is Saturday 14 November. For the 45-day tier, the ordinary deadline is that same Saturday 14 November, and its fifth calendar day is Thursday 19 November.

The quarter that just ended shows the tier arithmetic on a real calendar. For the quarter ended 30 June 2026, the 40-day deadline fell on Sunday 9 August, and the fifth calendar day after it fell on Friday 14 August. Friday 14 August was also the ordinary 45-day deadline for every other registrant reporting the same quarter. One group's extended date and another group's ordinary date were the same Friday, which is what 40 plus 5 equalling 45 looks like once it is written on a calendar rather than in days.

Rule 0-3(a) addresses the weekend problem in general terms: papers are filed on the date received, “except that if the last day on which papers can be accepted as timely filed falls on a Saturday, Sunday or holiday, such papers may be filed on the first business day following.”

Rule 12b-25 counts its five days from “the prescribed due date” and says nothing about weekends. Rule 0-3(a) speaks about the last day papers can be accepted as timely filed. Whether the Saturday 14 November cutoff for the 40-day tier therefore runs to Monday 16 November is not settled by the text of Rule 12b-25 itself. A position sized on the difference between Saturday 14 November and Monday 16 November is a position sized on a question the rule leaves to a general provision, which is a poor thing to lean on.

The part of the form with numbers in it

Part IV of Form 12b-25 asks a question that the narrative part does not. Item (3) reads: “Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?” If the answer is yes, the form directs the filer to “attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.”

That is the one place in the document where a filer is asked for figures about the period the market has not seen. A Yes with an attached quantitative explanation carries information the narrative part does not. A Yes with an explanation of why no reasonable estimate can be made carries a different kind of information. Item (2) of the same part is worth a glance as well, since it asks whether all other periodic reports of the preceding twelve months have been filed, and identifies them if not.

What the window costs before it closes

Paragraph (d) of the rule attaches a consequence that runs from the due date rather than from the end of the window: “a registrant will not be eligible to use any registration statement form under the Securities Act of 1933 the use of which is predicated on timely filed reports until the subject report is actually filed pursuant to paragraph (b)(3) of this section.”

For a small issuer that funds itself through registered offerings, that gap is the practical content of the event. What happens to that eligibility after the window closes is governed by the instructions to the registration form in question, which this article does not reach. Paragraph (c) is the other clause worth knowing: when the cause is that a person other than the registrant cannot furnish a required opinion, report or certification, the form must carry “a statement signed by such person stating the specific reasons why such person is unable to furnish the required opinion, report or certification on or before the date such report must be filed.” An attached exhibit of that kind names the bottleneck.

Six months of these filings, counted here

To see how routine or how rare these notifications are, the EDGAR full-text search index was queried by form type and filing-date range for each month from March through August 2026. The counts below are produced by the SEC index itself, not tallied by hand, and each query returned an exact rather than an approximate total.

• March 2026 — 298 NT 10-K, 12 NT 10-Q
• April 2026 — 151 NT 10-K, 26 NT 10-Q
• May 2026 — 10 NT 10-K, 290 NT 10-Q
• June 2026 — 32 NT 10-K, 15 NT 10-Q
• July 2026 — 13 NT 10-K, 14 NT 10-Q
• August 2026 — 12 NT 10-K, 223 NT 10-Q

The six monthly figures sum to 516 annual-report notifications and 580 quarterly-report notifications. A separate single query over the whole window, run to check the arithmetic rather than to add to it, returned those same two totals.

The shape matters more than the level. These filings are not scattered through the year; they arrive in the days after a deadline, and the two series take turns. As a base rate, 5,088 filings of Form 10-Q were made between 1 July and 31 August 2026, against 237 quarterly late-filing notifications in the same window — about 4.7 percent, or roughly one in twenty-one.

What Would Invalidate This

The counts are filings, not issuers. One registrant can appear more than once in a month if more than one report is affected, and the tally does not attempt to separate operating companies from funds, trusts or asset-backed issuers, all of which can file the same forms. The figures also come from a search index; any filing the index does not carry would not appear in them.

More importantly, the outcome rate is not measured here. Of the 580 quarterly notifications counted, this article does not establish how many were followed by the actual report inside the five-day window. Condition (b)(3) is what decides whether the extension attaches, and reading these counts as if they described that outcome would be reading them for something they do not contain.

The arithmetic assumes a filer's tier is known and stable. Accelerated filer status is determined under its own tests and can change between periods, which moves the deadline and therefore the end of the window. The tier arithmetic also holds only for the deadlines set by the two forms discussed; it says nothing about registrants filing on Form 20-F or the other report types the rule covers.

Three carve-outs sit at the end of the rule. Paragraph (f) excludes financial statements or schedules filed by amendment to a Form 10-K under the provisions it names. Paragraph (g) removes electronic filings from the section where the sole reason for lateness is inability to file in electronic format, and its second sentence says where those filers go instead: “Filers unable to submit a report in electronic format within the time period prescribed solely due to difficulties with electronic filing should comply with either Rule 201 or 202 of Regulation S-T (§§ 232.201 and 232.202 of this chapter), or apply for an adjustment of filing date pursuant to Rule 13(b) of Regulation S-T (§ 232.13(c) of this chapter).” Paragraph (h) removes Interactive Data File submissions and points those filers to Regulation S-T instead. Exchange listing standards impose their own filing requirements with their own consequences, and this article does not cover them.

Concrete Framework

1. Read the form itself before reading coverage of it. It is a short document and it reaches EDGAR on the day it is filed.
2. Confirm which report is checked in the “(Check one)” boxes at the head of the form, above the Part I heading, since the window is five calendar days for a quarterly report and fifteen for an annual one.
3. Compute the end of the window from the prescribed due date, not from the date the notification was filed. The notification is due one business day after the report was.
4. Check whether that end date is a weekend or a holiday, and treat the resulting date as uncertain rather than resolved.
5. Go to Part IV item (3). That item is where the form asks for a forward-looking figure, and a Yes carries an attachment with it.
6. Check Part IV item (2) for whether other periodic reports of the preceding twelve months are also outstanding.
7. Look for a paragraph (c) exhibit signed by someone other than the registrant, which identifies where the process stopped.
8. Mark the window's end date on a calendar and re-check EDGAR on it. Condition (b)(3) resolves on that date, not before.

This article is for information only and is not investment advice. Rule text and form content are quoted from the eCFR and from the Commission's published form as retrieved on 3 September 2026; both can be amended.