SEC filingsOct 13, 2026 to Oct 20, 2026: insiders reported 905 purchases and sales across 224 companies.905 insider purchases and sales in 7 daysSee the filings →
HornScout

What does it mean?

Glossary

The SEC and exchange words that appear on the company profiles, in plain English: what they are and what they aren't. The same definitions the “?” next to each term opens.

8-K

What it is
The report a US-listed company files with the SEC, within four business days, when something important happens: results, a change of executives, an acquisition, an exchange deficiency notice… Each item carries a number, such as 3.01.
It isn't
A periodic report (those are the annual 10-K and the quarterly 10-Q), nor a HornScout assessment.

8-K 3.01

What it is
The 8-K item in which the company says the exchange has told it that it breaches a rule for staying listed, or that it is leaving that exchange or moving to another.
It isn't
The delisting itself: many companies fix the breach within the deadline.

Exchange deficiency notice

What it is
The letter in which the exchange (Nasdaq or NYSE) tells a company that it breaches a requirement for staying listed, such as the minimum price, and gives it a deadline to fix it. The company makes it public in an 8-K, item 3.01.
It isn't
A HornScout caveat or a delisting: it is a deadline to comply again.

Form 4

What it is
The filing an executive, a director or a holder of more than 10% of the company makes with the SEC when they buy or sell its shares, within two business days.
It isn't
A recommendation: an executive may sell to pay taxes, to diversify or under a plan set in advance.

Planned sale (Form 144)

What it is
The notice an executive or a controlling shareholder files with the SEC before selling restricted or control shares above a certain size. It announces the intention; the completed sale is reported later, in the Form 4.
It isn't
A completed sale: it may never happen, or happen only in part.

13D and 13G

What it is
The filings made with the SEC by whoever crosses 5% of a company's voting shares. The 13D, by someone who may want to influence how it is run; the 13G, the short form, by a passive investor, such as many funds.
It isn't
An offer to buy the company: it says who holds more than 5% and with what stated intention.

Reverse split

What it is
Merging several shares into one: in a 1:10 reverse split, every 10 shares become 1 and the price of each is multiplied by 10. Companies often use it to get back to the minimum price the exchange requires.
It isn't
A gain: that day what you hold is worth the same; only the number of shares and the price of each one change.

Percentile

What it is
Where a figure falls within its own history, from 0 to 100: percentile 18 means 18 out of every 100 earlier readings came in below it.
It isn't
A grade or a forecast: a low percentile isn't “bad” nor a high one “good”; it only places the figure.

Form 25

What it is
The form with which an exchange, or the company itself, tells the SEC that its shares stop trading on that exchange. The delisting takes effect about ten days later.
It isn't
A bankruptcy: the company may move to another exchange or to the over-the-counter market (OTC), or may have been acquired.

Caveat

What it is
Something worth a look in a name you follow, with its severity. It is recalculated every day.
It isn't
An order or a forecast: it says where to look, not what to do.