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L.4 · INTERMEDIATE · 2 MIN

8-K: The Material Event Disclosure

The 8-K is the SEC's 'something just happened' filing — used when material events occur between the periodic 10-K and 10-Q filings. Most 8-Ks are routine (earnings announcements, board changes); a small subset are loud signals (restatements, M&A, CEO departures, going-concern issues). Learning the item-number taxonomy is the difference between watching noise and reading signal.

Quiz · 5 questions ↓
§ 01
Item #What it disclosesTypical signal
Item 1.01Entry into a material definitive agreementM&A deal announced, large customer contract signed
Item 2.02Results of operations and financial conditionQuarterly earnings release (routine; nearly all public companies)
Item 4.02Non-reliance on previously-issued financialsRestatement coming — one of the loudest signals
Item 5.02Departure or appointment of directors/officersCEO/CFO change — often material for stock price
Item 7.01 / 8.01Regulation FD / Other eventsCatch-all for material info that doesn't fit other items
§ 02

The 8-K must be filed within 4 BUSINESS DAYS of the triggering event (per Section 13 or 15(d) of the Exchange Act). That deadline is short by design: the disclosure regime exists to prevent insider-trading windows, so investors must learn material news at the same time as everyone else. Late 8-Ks are themselves a red flag because they often indicate disorganized governance or the company stalling to time the news with other releases.

§ 03

The 8-K filing itself is usually short (1-3 pages); the EXHIBITS attached to it are where the substance lives. A material-agreement 8-K (Item 1.01) typically attaches the actual contract; a CEO-departure 8-K (Item 5.02) often attaches a separation agreement with severance terms. The press-release exhibit is the PR-vetted version; the contract exhibit is what the lawyers actually wrote — read both, they often diverge in tone.

§ 04
Pick a recent stock-price move you saw in the news. Look up the company's recent 8-K filings on EDGAR. The 8-K should align with the news event, and the item number will tell you the SEC's taxonomy for the event. If a stock move has no 8-K behind it, the move was probably driven by analyst action, sector rotation, or rumor — not company disclosure.
§ 05

Watch for 8-Ks filed AFTER MARKET CLOSE on Fridays. The pattern is well-documented: companies time bad news (executive departures, restatement notices, weak guidance) to land when the market can't react for 60 hours. The disclosure itself satisfies the regulatory deadline, but the timing is a soft signal that management thinks the news is bad. Conversely, 8-Ks filed mid-morning Tuesday usually contain news the company is comfortable trading on.

§ 06

The 8-K is the inter-period event signal. Learn the high-priority item numbers (1.01 M&A / 4.02 restatement / 5.02 leadership change). Read the exhibits, not just the cover page. Watch the timing — late or weekend filings carry their own signal beyond the content.

Five questions · AI feedback

Sit with the ideas.

A company files an 8-K with Item 4.02 (non-reliance on previously-issued financial statements). What does this typically mean?

Why:
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