10-Q Filing Deadlines: Filer Categories, Form 12b-25, and Penalties

A public company’s Form 10-Q filing deadline is 40 calendar days after the end of each of the first three fiscal quarters for large accelerated filers and accelerated filers, and 45 calendar days for everyone else. No 10-Q is due for the fourth quarter, because the annual Form 10-K covers that period.¹ If you cannot make the date, Form 12b-25 can buy you five additional calendar days, but only if you file it within one business day of the original deadline.²

Deadlines by Filer Category

Which deadline applies to you depends on your filer status under Exchange Act Rule 12b-2. The SEC assigns that status based on your public float, meaning the market value of voting and non-voting common equity held by non-affiliates as of the last business day of your most recently completed second fiscal quarter.³

Large accelerated filers, with public float of $700 million or more, must file within 40 calendar days after quarter-end.³
Accelerated filers, with public float of at least $75 million but less than $700 million, also have 40 calendar days.³
Non-accelerated filers, including smaller reporting companies that qualify under the revenue test, have 45 calendar days.⁴

Filer status is recalculated annually, but exit thresholds sit at roughly 80% of the entry numbers. A large accelerated filer does not drop back to accelerated status until float falls below $560 million, and an accelerated filer does not become a non-accelerated filer until float drops below $60 million.⁴ That buffer keeps companies whose float hovers near a line from bouncing between categories year after year.

When the Deadline Falls on a Weekend or Holiday

Exchange Act Rule 0-3 gives you the next business day when the last day to file lands on a Saturday, Sunday, or federal holiday.⁵ A 40-day deadline that hits a Sunday becomes Monday.

The intra-day cutoff is a separate trap. EDGAR runs from 6:00 a.m. to 10:00 p.m. Eastern Time, Monday through Friday, excluding federal holidays, but the cutoff for receiving that day’s filing date is 5:30 p.m. ET. A live submission started at or before 5:30 p.m. and accepted by EDGAR takes that day’s date. Anything started after 5:30 p.m. generally gets the next business day’s date.⁶ On a deadline day, that half-hour is the difference between timely and late.

EDGAR will be closed on the following federal holidays in 2026:⁷

New Year’s Day, Thursday, January 1
Martin Luther King Jr. Day, Monday, January 19
Washington’s Birthday, Monday, February 16
Memorial Day, Monday, May 25
Juneteenth, Friday, June 19
Independence Day (observed), Friday, July 3
Labor Day, Monday, September 7
Columbus Day, Monday, October 12
Veterans Day, Wednesday, November 11
Thanksgiving Day, Thursday, November 26
Christmas Day, Friday, December 25

When a holiday falls on Saturday, the observed closure shifts to the preceding Friday; on Sunday, it moves to the following Monday. Independence Day 2026 falls on a Saturday, so July 3 is the observed closure.

First 10-Q After an IPO

Newly public companies follow a different clock. Under Rule 13a-13, the obligation to file quarterly reports begins with the first fiscal quarter after the most recent fiscal year for which full financial statements appeared in the registration statement. The first 10-Q is due either within 45 days after the registration statement’s effective date or by the date it would have been due if the company had already been a reporting issuer, whichever is later.⁸ If the registration statement included interim financial statements for a period after fiscal year end, the quarterly filing obligation starts with the first full quarter after that interim period.

Requesting an Extension With Form 12b-25

Form 12b-25, the Notification of Late Filing, is the only path to a lawful extension. It must be filed no later than one business day after the original due date, and doing so unlocks a grace period of five calendar days for a quarterly report.² Miss the one-business-day window and the grace period is gone; miss the five-day extended deadline and the protection is also gone.

The form is a substantive disclosure, not a placeholder. You must identify the fiscal period, specify the late report, and explain in detail why the report could not be completed on time without unreasonable effort or expense. Vague explanations invite scrutiny. Common accepted reasons include delays in consolidating financial data from recently acquired subsidiaries or ongoing restatement work.

You also have to say whether you expect a significant change in results of operations compared with the same period the prior year. If you do, the form requires both a narrative and a quantitative discussion of that change. The SEC has brought enforcement actions against companies that filed boilerplate 12b-25s without meaningful disclosure.⁹ An authorized officer signs the form, and the company confirms that the missing 10-Q will be filed within five calendar days of the original deadline.²

What Missing the Deadline Costs

The most immediate practical hit for many companies is losing eligibility to use Form S-3 for securities offerings. Form S-3 requires that the company has filed all required Exchange Act reports on time during the 12 months before the registration statement. A single late 10-Q breaks the streak. If you used Rule 12b-25, the report has to have actually been filed within the five-day grace period to preserve S-3 eligibility.¹⁰

Shareholders feel it too. Rule 144 requires that “adequate current public information” about the issuer be available before anyone can sell restricted or control securities under the safe harbor. For reporting companies, that condition is met only if the company has filed all required reports under Section 13 or 15(d) of the Exchange Act during the preceding 12 months.¹¹ A missed 10-Q can lock shareholders out of selling until the company catches up.

Repeated delinquent filings can lead the SEC to initiate administrative proceedings to revoke a company’s securities registration. The major stock exchanges also maintain listing standards that require timely periodic filings, and prolonged noncompliance can trigger delisting proceedings with their own notice and cure periods.

Filing Through EDGAR on Deadline Day

All 10-Q filings go through the SEC’s EDGAR system.¹² The filer logs in with their Central Index Key and access credentials, selects the submission type, and uploads the prepared Inline XBRL document. EDGAR runs automated validation checks on format and tagging before accepting the submission.

After acceptance, EDGAR generates a timestamped notification that serves as the official record of when the filing was made. That timestamp is what governs deadline compliance, so keep it. If the system rejects a filing due to formatting errors, the clock keeps running. Companies that wait until the last hours of a deadline to transmit are gambling that nothing goes wrong. Starting the submission a day early is the cheapest insurance available.⁶

1
U.S. Securities and Exchange Commission. Form 10-Q – General Instructions
2
eCFR. 17 CFR 240.12b-25 – Notification of Inability to Timely File
3
eCFR. 17 CFR 240.12b-2 – Definitions
4
U.S. Securities and Exchange Commission. Accelerated Filer and Large Accelerated Filer Definitions
5
eCFR. 17 CFR 240.0-3 – Filing of Material With the Commission
6
U.S. Securities and Exchange Commission. Determine the Status of My Filing
7
U.S. Securities and Exchange Commission. EDGAR Calendar
8
eCFR. 17 CFR 240.13a-13 – Quarterly Reports on Form 10-Q
9
U.S. Securities and Exchange Commission. Form 12b-25 – Notification of Late Filing
10
U.S. Securities and Exchange Commission. Form S-3 – General Instructions
11
eCFR. 17 CFR 230.144 – Persons Deemed Not to Be Engaged in a Distribution
12
Securities and Exchange Commission. Submit Filings