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Glossary

Form 8-K

A filing US public companies must make with the SEC within four business days of a major event such as an acquisition or CEO change.

On this page
  1. What triggers one
  2. How to use it
  3. Related terms

Form 8-K is the "current report" a US public company files with the SEC to announce a material event between its quarterly and annual reports. Most triggering events must be disclosed within four business days. Because it is filed whenever something important happens rather than on a calendar, the 8-K is often the first official, legally accountable record of news that moves a stock.

What triggers one

The form is organized into numbered items, each tied to a type of event. Some of the most common:

  • Item 1.01: entering into a material definitive agreement, such as a merger agreement or a large contract.
  • Item 1.05: a material cybersecurity incident, required of most companies since December 18, 2023.
  • Item 2.02: results of operations; companies furnish their earnings press release under this item.
  • Item 2.05 and 2.06: costs of exit activities such as layoffs, and material impairments.
  • Item 5.02: departure or appointment of directors and certain officers.
  • Item 7.01: Regulation FD disclosures, such as investor-presentation slides.
  • Item 8.01: other events the company chooses to report.

How to use it

Read the exhibits, not just the headline item: press releases, agreements and presentations are attached as Exhibit 99 or Exhibit 10 filings. Many 8-Ks are routine, but a cluster of unusual items, or timing designed to avoid attention, is worth noticing. Every 8-K is free on EDGAR within minutes of filing.

Written and fact-checked by Finabase Research. Last reviewed . Spotted an error? Tell us.

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