How common are late Form 4 filings?

The large majority of Form 4s are filed within the two-business-day window. A single-digit percentage miss it, and a much smaller fraction of those are more than 30 business days late. The exact share moves as filings are collected; the live figures are on our late-filings tracker.

Is a late Form 4 illegal?

Missing the deadline is a violation of the Section 16(a) reporting requirement, but that is a disclosure-timing rule, separate from insider-trading law. A late filing is not by itself evidence that a trade was improper.

What happens to companies whose insiders file late?

Under Item 405 of Regulation S-K, a company must identify known delinquent Section 16 filers in its annual proxy statement. The SEC has also brought enforcement actions, with penalties reported from roughly $10,000 to several hundred thousand dollars, generally reserved for chronic or egregious patterns.

Why So Many Form 4 Filings Are Late — and What It Means

Filing a Form 4 on time is not hard. Two business days, a standard XML submission, usually handled by the company's legal or stock-administration team rather than the insider personally. And yet a persistent minority of filings miss the deadline, some by a lot.

Here is how timeliness is distributed, with a tool to grade a specific delay:

How timely Form 4 filings are

On time (0–2 business days)95.4%
1–5 business days late3.1%
6–30 business days late0.8%
More than 30 business days late0.7%

Grade a delay: 4 business days late

4 business days late. An administrative slip. Common, rarely pursued on its own.

Distribution is a point-in-time snapshot and moves as filings are ingested. The live figures, by company and by insider, are on the late-filings tracker.

Why filings are late

Batching gone wrong. Companies often prepare Form 4s in batches. If a transaction slips out of a batch — a broker confirmation arrives after the paperwork was assembled — it can be missed until someone notices.

Indirect holdings and trusts. Trades through a trust, an LLC, a family member's account or a fund are still reportable, and they are the ones most likely to be discovered late, because the information reaches the filing team on a delay.

New insiders. Someone who just joined a board or was promoted into an officer role may not have filing infrastructure set up yet. Their first few filings are disproportionately late.

Estates, gifts and 10b5-1 mechanics. Transactions that are not a simple market buy or sell — a gift, an inheritance, a plan-based trade with delayed broker notification — introduce ambiguity about when the clock started, and ambiguity produces delay.

When lateness is worth caring about

A single filing a few days late: almost never. It is the base rate of administrative friction.

A filing weeks or months late: worth a look, because a long delay can mean the transaction was awkward to characterise, or that disclosure was not a priority.

A repeat offender: this is where the signal is. Item 405 of Regulation S-K exists precisely because chronic delinquency is a governance tell — a company that cannot get its insiders to report on time may be casual about other disclosure obligations too. On this site the late-filings tracker ranks companies by the share of their filings that miss the deadline, with the count shown next to every rate so a company with three filings and one lapse is not presented as "33% late" and left there.

What it does not mean

Lateness says nothing about whether a trade was well-timed, well-informed or improper. Those are questions about the transaction. Lateness is a question about the filing. Keep them separate.

The short version

Most Form 4s are on time. Lateness is usually batching friction or an indirect holding discovered late, and one late filing means very little. A company or an individual that is late over and over is the version worth noticing, and it is a disclosure-discipline signal rather than a trading one.