What is an 8-K?

An 8-K, formally a "current report", is the form a US public company files with the Securities and Exchange Commission when something material happens between its regular quarterly and annual reports. Where a 10-Q or 10-K is a scheduled health check, the 8-K is the unscheduled one: it exists precisely because investors should not have to wait three months to learn about a major event.

What triggers an 8-K

The SEC defines a list of reportable events, each with its own item number. The ones that most often move coverage include:

• Results of operations (Item 2.02) — earnings announcements often arrive attached to an 8-K.
• Entry into or termination of a material agreement (Items 1.01 / 1.02).
• Acquisitions and disposals of assets (Item 2.01).
• Executive departures and appointments (Item 5.02).
• Bankruptcy or receivership (Item 1.03).
• Material cybersecurity incidents (Item 1.05) — a newer requirement with tight timing.
• Regulation FD disclosures (Item 7.01) — information shared publicly to avoid selective disclosure.
• "Other events" (Item 8.01) — a catch-all companies use for anything they consider noteworthy.

In most cases a company has four business days from the triggering event to file. Some items are effectively immediate; others, like certain cybersecurity disclosures, run on their own clocks.

Why the item number matters more than the headline

Two 8-Ks can look identical in a news feed and mean very different things. An Item 2.02 earnings release is routine and scheduled in all but name; an unexpected Item 5.02 executive departure filed on a Friday evening is a genuinely new fact. When our monitoring picks up a filing at EDGAR, the classification you see comes from the filing's own metadata — the item numbers the company itself declared — not from anyone's interpretation of it.

What an 8-K does not tell you

An 8-K confirms that the company said something — it does not confirm that the underlying story is complete. A filing about a "material definitive agreement" states one party's account; the counterparty may characterise the same deal differently. Figures inside the document also need to be read in the document: summaries and social posts routinely truncate or reframe them. That is why our own coverage never extracts numbers from a filing automatically — an editor reads the primary document first.

How fast does it show up?

Filings appear on the SEC's EDGAR system shortly after acceptance, timestamped to the second. Our desk polls EDGAR directly for the companies on the watchlist, so a new filing typically surfaces in coverage within the hour, linked straight to the primary document. The document itself is always the authoritative record — everything else, including our summaries, is commentary on it.