Form 12b-25 says a report is late and gives the company's reason. Read Part II and Part IV first, then watch the filings that follow.
A late notice gives you a question
A company's 10-K comes due. The next day, EDGAR shows a short filing from the same company under a form type many readers skip: NT 10-K. It has a few checkboxes, a paragraph of explanation and two yes-or-no questions. That scene is a hypothetical, but every part of the form is real.
The notice can be routine. It can also be the first public sign that an audit or a review isn't finished. Read well, it tells you which filing to watch next. Read badly, it puts an accusation under your name that the document never made.
Our rule: report what the notice says, and let the follow-up filings carry anything more.
What an NT 10-K is
NT 10-K is the EDGAR form type for a Form 12b-25, the SEC's Notification of Late Filing, when the late report is an annual report on Form 10-K. The same form covers other periodic reports, so you'll also see NT 10-Q and NT 20-F.
Rule 12b-25 sets the mechanics. A company that can't file on time must submit the notice no later than one business day after the due date, with its reasons in reasonable detail. If it also represents that the reason couldn't be eliminated without unreasonable effort or expense, and that the report will follow within the grace period, the report counts as filed on its due date if it actually arrives within that window. The window is 15 calendar days for an annual report and five calendar days for a quarterly report on Form 10-Q.
Timeliness matters to the company. Eligibility for the short-form Form S-3 registration statement depends partly on filing reports on time over the prior 12 months, and the Form S-3 instructions count a report filed under Rule 12b-25(b) only if it actually arrived within the grace period. That's one reason companies file a notice defensively while they finish the last details.
For context, the Form 10-K instructions set the original deadline at 60, 75 or 90 days after fiscal year-end, for large accelerated filers, accelerated filers and all other registrants.
- 1 business day Deadline to file Form 12b-25 after the report's original due date (SEC Rule 12b-25(a))
- 15 days Calendar-day grace period for a late annual report (SEC Rule 12b-25(b))
- 5 days Calendar-day grace period for a late quarterly report on Form 10-Q (SEC Rule 12b-25(b))
Read Part IV before Part III
Part III is the narrative, and it's the part written in sentences, so it draws the eye first. The form asks why the report couldn't be filed, "in reasonable detail." Answers are often a sentence or two about needing more time to finish the audit or the financial statements.
Part IV is where we look first. It asks for a contact name and phone number, then two yes-or-no questions. Has the company filed every periodic report it owed in the preceding 12 months, and if not, which ones? And does it expect a significant change in results of operations from the same period last year to show up in the late report? If the second answer is yes, the form requires an explanation of the change, "both narratively and quantitatively," and, if appropriate, the reasons a reasonable estimate can't be made.
Two more places carry signal. Part II holds the boxes a company checks to claim the grace period. Left unchecked, they mean the company isn't representing that the report will arrive within it. And under Rule 12b-25(c), when the delay comes from someone else's inability to furnish a required opinion, report or certification (an auditor, for example), the notice must attach that person's signed statement giving the specific reasons.
| Part of the form | What it can support | What it can't support |
|---|---|---|
| Part II checkboxes | Whether the company says it will file within the 15-day or 5-day grace period | Why it might miss that window |
| Part III narrative | The company's stated reason, in its own words | Any motive, misconduct or outcome the text doesn't state |
| Part IV(2), prior reports | Whether other periodic reports were missed in the preceding 12 months | Whether those delays relate to this one |
| Part IV(3), results change | An expected significant change in results, with figures where given | The cause of the change, unless the explanation states it |
| Rule 12b-25(c) statement | A third party, often the auditor, on record about why it can't deliver | Which account is right if the company and the third party differ |
Based on SEC Form 12b-25 and Rule 12b-25 (17 CFR 240.12b-25).
Routine notices and notices that need a follow-up
Many notices give ordinary reasons: an acquisition late in the fiscal year that takes longer to audit, a valuation that isn't finished, a new accounting standard. A notice that cites more time to complete the audit, checks the Part II boxes, answers Part IV(2) yes and answers Part IV(3) no is a company saying it's a few days behind and expects nothing unusual in its results.
Some language calls for a closer look: an internal review, an audit committee investigation, a material weakness in internal control over financial reporting, any reference to previously issued financial statements, a recent auditor change, a Rule 12b-25(c) statement, or a Part IV(3) explanation with real numbers in it.
None of these establishes wrongdoing. Each one tells you which follow-up filing to watch.
A hypothetical notice, read to its limit
Here's an illustrative case that describes no real company. A smaller company misses its 10-K date. Its NT 10-K checks the Part II boxes. Part III says the audit committee is reviewing the accounting for certain revenue contracts and the company needs more time. Part IV(3) answers yes and says a reasonable estimate of results can't be made until the review is done.
That notice supports one defensible sentence: the company says its 10-K is late because of an audit committee review of revenue accounting, and it can't yet estimate its results. It doesn't support "accounting scandal" or "restatement coming."
So you start a file. Part IV(1) names a contact you can ask on the record. The checklist below tells you which filings to watch, in order. The 8-K deadlines come from the Form 8-K instructions, which set four business days after the event for most items.
| Check | Where to look | What it changes |
|---|---|---|
| Did the report arrive within the 15-day or 5-day window? | The company's EDGAR filing list | If it did, the report counts as filed on its due date, and the story often ends there |
| Is there an 8-K under Item 4.02 (non-reliance on previously issued financial statements)? | 8-K, due within four business days of the conclusion | The company is saying earlier statements should no longer be relied on |
| Is there an 8-K under Item 4.01 (change in certifying accountant)? | 8-K, plus the former auditor's letter filed as an exhibit | The letter says whether the auditor agrees with the company's account |
| Is there an 8-K under Item 3.01 (notice of failure to satisfy a continued listing rule)? | 8-K after an exchange notice | For a listed company, the exchange has formally flagged a deficiency |
| Does the final 10-K report a material weakness or a restatement? | Item 9A (controls and procedures) and the financial statement notes | Confirms or closes the question the notice raised |
| Has the company filed late notices before? | Part IV(2) and the company's EDGAR history | A pattern reads differently from a one-off |
Item numbers per SEC Form 8-K and Form 10-K. Our follow-up order.
Keep a late-filing file
For each notice worth following, save four things: the filing date, the Part III reason in the company's words, the Part IV answers, and the date the grace period ends. Check back on that date. Most files close quietly when the report arrives. The rest point you to a specific 8-K item.
If you cover a sector, the surrounding coverage tells you which companies deserve a file. Niche briefings follow a field, check coverage against independent sources and link to them. Reading the notice stays with you. Our guide to SEC filings covers the 8-Ks a late notice can lead to.
Frequently asked questions
What is an NT 10-K?
It's the EDGAR form type for Form 12b-25, the SEC's Notification of Late Filing, when the late report is a 10-K. The company files it no later than one business day after the due date, explains the delay in Part III and answers yes-or-no questions in Part IV.
Does an NT 10-K mean the company will restate its financials?
The notice alone doesn't say that. Many give ordinary reasons. A company that concludes earlier financial statements should no longer be relied on files an 8-K under Item 4.02, and that filing is the one to watch.
How long does a company have after filing an NT 10-K?
Under Rule 12b-25(b), 15 calendar days after the original due date for an annual report and five for a 10-Q. A report filed within that window, with the required representations in the notice, counts as filed on its due date.
Where do I find NT 10-K filings?
On SEC EDGAR. Filter a company's filings by form type NT 10-K or NT 10-Q. The filing also shows any attached statement from a third party, such as an auditor, under Rule 12b-25(c).