What is an 8-K filing? A plain-English guide
An 8-K filing is the current report that US public companies file with the SEC to disclose material events between their scheduled quarterly and annual reports. When something significant happens, an acquisition, a change of chief executive, a bankruptcy, a major contract, the company files an 8-K so investors learn about it quickly rather than waiting for the next 10-Q or 10-K. For most events, the deadline is four business days.
Definition
An 8-K filing
is the SEC current report a US public company files to disclose a material event, such as an acquisition, an executive change, or bankruptcy, between its regular quarterly and annual reports. Most 8-K items must be filed within four business days of the event. Source: SEC.
What triggers an 8-K filing?
The 8-K is organised into numbered items, each a category of event. Common ones include entering, amending, or ending a material definitive agreement (Item 1.01), completing an acquisition or disposal (Item 2.01), the departure or appointment of directors and officers (Item 5.02), a material cybersecurity incident (Item 1.05, added in 2023), and the results of a shareholder vote (Item 5.07). The item number tells you at a glance what kind of news the filing carries.
How fast must it be filed?
Speed is the point of the 8-K.
4 business days
Deadline to file an 8-K after most triggering events, counted from the day after the event
Source: SEC, Form 8-K rules
How is an 8-K different from other SEC filings?
An 8-K is event-driven, unlike the calendar-based 10-K annual and 10-Q quarterly reports. It also differs from ownership filings such as the 13F, which report a fund's holdings each quarter, and the Form 4, which reports an insider's trade. The 8-K is the company itself announcing a material corporate event.
How to read an 8-K
Start with the item number to see the event type, then read the body and any attached exhibits, which often include the actual agreement or press release. Every 8-K is on the SEC EDGAR database, dated and searchable by company. For US insider activity alongside corporate events, see how to track insider buying.
So an 8-K filing is how a US company tells the market, fast, that something material just happened. Flock reads SEC filings and keeps each one dated and sourced. What any of it means for your own decision is your call to make.
Frequently asked questions
What is an 8-K filing?
An 8-K is the current report US public companies file with the SEC to disclose material events between their regular quarterly and annual reports, such as acquisitions, executive changes, or bankruptcy. Most items must be filed within four business days of the event. Source: SEC.
When must an 8-K be filed?
For most triggering items, a company must file its 8-K within four business days of the event, with the clock starting the day after it occurs. A handful of items follow different timing. Source: SEC, Form 8-K rules.
What events trigger an 8-K?
Triggering events include entering or terminating a material agreement, completing an acquisition, a change in directors or officers, a material cybersecurity incident, delisting notices, and reporting shareholder-meeting voting results. Source: SEC, Form 8-K.
How is an 8-K different from a 10-K or 10-Q?
A 10-K is the annual report and a 10-Q is the quarterly report, both filed on a schedule. An 8-K is event-driven: it is filed when something material happens, not on a fixed calendar. Source: SEC.
Flock tracks these filings, sourced, dated, and linked back to the original. See what smart-money entities disclosed, without the guesswork about what it means.
Disclosures shown are public regulatory filings. Data may be delayed or incomplete. Smart-money entities may no longer hold positions shown. Not investment advice.