01
The transaction date is day zero
Counting starts on the next calendar day. Do not treat the transaction date itself as business day one.
Official SEC rule · EDGAR calendar · OPM holidays
SEC Form 4 Filing Deadline Calculator
Enter an insider transaction date to estimate the standard Form 4 deadline, see how weekends and federal holidays are excluded, and compare an actual filing date.
Official sources reviewed July 31, 2026
DIRECT ANSWER
Form 4 is generally due by the end of the second business day after the transaction
The transaction date is not business day one. Start with the following day, exclude Saturdays, Sundays and SEC closure dates, and count two business days.
Example: a transaction on Thursday, July 2, 2026 → July 3 is the observed Independence Day holiday and July 4–5 is a weekend → business day one is Monday, July 6 → the deadline is Tuesday, July 7.
Some qualifying Rule 10b5-1 and discretionary-plan transactions use special SEC deemed-execution-date rules. This calculator is a quick standard-rule estimate, not legal advice.
SEC BUSINESS-DAY CALCULATOR
Enter a transaction date to estimate the Form 4 deadline
Estimated standard Form 4 deadline
Tue, August 4, 2026
- First business day
- Mon, August 3, 2026
- Second business day
- Tue, August 4, 2026
- Sat, August 1, 2026Weekend — excluded
- Sun, August 2, 2026Weekend — excluded
- Mon, August 3, 2026Business day 1
- Tue, August 4, 2026Business day 2
This is a standard-deadline estimate. Verify the SEC source before filing because special closures and transaction-specific exceptions may change the result.
Four details that change the count
02
Exclude weekends and federal holidays
Saturdays, Sundays, and listed SEC or federal closure dates do not count as business days.
03
Confirm EDGAR acceptance
EDGAR generally accepts filings from 6:00 a.m. to 10:00 p.m. Eastern Time on eligible weekdays. Confirm acceptance, not just transmission.
04
Check special closures and exceptions
A static calendar cannot prove a special closure or transaction-specific deemed execution date. Recheck the SEC source before filing.
SEC closure dates for 2026
The 2026 dates are transcribed from the official SEC EDGAR calendar. Calculations for 2027–2030 use scheduled federal holidays published by OPM.
| Date | Holiday |
|---|---|
| Thu, January 1, 2026 | New Year's Day |
| Mon, January 19, 2026 | Birthday of Martin Luther King, Jr. |
| Mon, February 16, 2026 | Washington's Birthday |
| Mon, May 25, 2026 | Memorial Day |
| Fri, June 19, 2026 | Juneteenth |
| Fri, July 3, 2026 | Independence Day (observed) |
| Mon, September 7, 2026 | Labor Day |
| Mon, October 12, 2026 | Columbus Day |
| Wed, November 11, 2026 | Veterans Day |
| Thu, November 26, 2026 | Thanksgiving Day |
| Fri, December 25, 2026 | Christmas Day |
Download the business-day calendar
CSV and JSON preserve 2026–2030 holiday names, observed-date flags, sources, and review date.
Primary sources
Frequently asked questions
Exactly when is Form 4 due?
The SEC's general rule is before the end of the second business day after the transaction's execution date. The transaction date is not counted, and weekends and holidays are excluded.
What if the reported date is on a weekend?
The calculator starts with the day after the entered date and counts only SEC business days. Verify whether the reported transaction date itself is correct in the original filing.
Can this show whether a Form 4 was late?
Yes. Enter the actual filing date to compare it with the estimated deadline and see the number of business days late. Final verification requires the filing's transaction and acceptance timestamps.
Does this calculation apply to every Form 4?
No. Certain qualifying plans, discretionary transactions, and special closures can use different rules. The result is a standard-rule estimate.