How to Read an 8-K
A FilingRadar Editorial guide · · Sourced from sec.gov
What an 8-K actually is
The 8-K is the unscheduled filing a US public company must submit when a specific triggering event happens — typically within 4 business days. Where the 10-K and 10-Q are calendar-driven (annual and quarterly), the 8-K is event-driven. The SEC defines a list of triggering events using numbered Items: 1.01, 2.02, 4.02, 5.02, 7.01, 8.01, and roughly two dozen more.
The form itself is short. The substance lives in attached exhibits: the actual press release, the executive's separation agreement, the terms of the new credit facility, the cybersecurity incident details. Always read the exhibits, not just the form summary.
Why 8-Ks are the closest thing to a retail-investor newsfeed
Between the quarterly 10-Q and the annual 10-K, the 8-K is how material information enters the public record. A CEO resignation is announced in a press release, but the legal disclosure is the 8-K under Item 5.02. A breach is reported to customers, but the SEC version is the 8-K under Item 1.05. An acquisition is celebrated in a press release, but the deal terms appear as exhibits to an 8-K under Item 1.01 or 2.01.
Watching the 8-K filings for companies you own is a more disciplined version of watching financial news — by the time a story is rewritten for retail consumption, the underlying 8-K has been public for hours or days.
8-K Item reference: what each number means
The full list of 8-K Items runs to 30+ entries. Below are the ones a retail investor actually encounters, with a rough signal rating.
| Item | What it means | Signal |
|---|---|---|
| 1.01 | Entry into a Material Definitive Agreement | HIGH |
| 1.02 | Termination of a Material Definitive Agreement | HIGH |
| 1.05 | Material Cybersecurity Incidents | HIGH |
| 2.01 | Completion of Acquisition or Disposition of Assets | HIGH |
| 2.02 | Results of Operations and Financial Condition (earnings) | MED |
| 2.05 | Costs Associated with Exit or Disposal Activities | MED |
| 3.01 | Notice of Delisting / Failure to Satisfy Listing Standards | HIGH |
| 4.01 | Changes in Registrant's Certifying Accountant | HIGH |
| 4.02 | Non-Reliance on Previously Issued Financial Statements | HIGH |
| 5.02 | Departure / Election of Directors or Executive Officers | HIGH |
| 5.07 | Submission of Matters to a Vote of Security Holders | LOW |
| 7.01 | Regulation FD Disclosure | MED |
| 8.01 | Other Events (catch-all) | MED |
Signal rating is our editorial assessment of how often this Item materially moves a stock for retail investors. Not investment advice.
The 8-K Items worth opening every time
Item 4.02 — Non-Reliance on Previously Issued Financial Statements
One of the strongest single negative signals in SEC filings. Item 4.02 is the formal admission that previously reported financials cannot be relied upon. It typically precedes a full restatement via amended 10-K/A or 10-Q/A. Stock-price drops on Item 4.02 announcements are usually sharp; recovery takes years on average.
Item 5.02 — Director / Officer Departures and Appointments
Every CEO, CFO, and key executive change appears here. Read both the form text and the attached separation agreement (when included). The presence of a non-disparagement clause or unusually large severance often signals friction; a CEO leaving for "personal reasons" shortly after weak earnings is rarely just personal reasons.
Item 1.01 / 1.02 — Material Definitive Agreements
Item 1.01 is filed when a company enters into a material contract; Item 1.02 when one is terminated. The attached exhibit usually contains the actual agreement (redacted where confidentiality is permitted). For a customer-concentration-heavy business, tracking these contracts is critical — termination of a top customer agreement under Item 1.02 is a serious data point.
Item 1.05 — Material Cybersecurity Incidents
Mandatory since December 2023. Companies must disclose material cybersecurity incidents within 4 business days of determining materiality. The disclosure must include nature, scope, timing, and material impact — though companies often defer technical detail to later amendments. Item 1.05 filings have already been used by activist short sellers as starting points for deeper research.
Item 4.01 — Change in Certifying Accountant
Auditor changes are not always negative, but sudden auditor departures mid-engagement are a red flag. The 8-K must disclose any "reportable events" — disagreements with the auditor on accounting principles, financial statement disclosures, or auditing scope. If the form mentions reportable events, read it carefully.
The 5-minute 8-K read
- 30 sec — Note the Item number(s). The Item is the headline.
- 1 min — Read the cover-page summary text for context.
- 2 min — Open the relevant exhibits (press release, agreement, separation letter). The exhibits contain the actual information.
- 1 min — Cross-reference with recent 10-Q risk factors and any prior 8-Ks from the same company. Patterns matter.
- 30 sec — Note the filing date vs. event date. Large gaps between event and filing can themselves be a signal.
Filed vs. furnished — why it matters
8-K disclosures are either "filed" or "furnished." Furnished content (typically Items 2.02 and 7.01) carries lower liability exposure under Section 18 of the Exchange Act but is still subject to anti-fraud rules. Filed content is treated as part of the company's overall SEC disclosure record.
In practice, this means optimistic forward-looking statements in an earnings release (Item 2.02, furnished) are easier to defend in court than the same statements in a 10-Q or 10-K. Companies know this; you should too.
Frequently asked questions
What is an 8-K filing?
An 8-K is the SEC's "current report" — an unscheduled filing a US public company must submit within 4 business days when a material event occurs. Triggers include earnings releases, executive changes, acquisitions, restatements, and cyber incidents.
How fast must a company file an 8-K?
Within 4 business days of the triggering event for most Items. Some, like Item 7.01 (Regulation FD disclosure), have shorter timelines. Cybersecurity incidents under Item 1.05 must be reported within 4 business days of determining the incident is material.
Which 8-K Items are most important?
Item 4.02 (non-reliance on financials — restatement signal), Item 5.02 (executive changes), Item 1.01 (material agreement), Item 2.02 (earnings release), and Item 1.05 (cyber incident) carry the most market impact. Always check the Item number first.
What's the difference between an 8-K and a 10-Q?
An 8-K is event-driven, filed within 4 days of a specific material event. A 10-Q is calendar-driven, the quarterly periodic report. Earnings releases are filed as 8-Ks; the same numbers reappear in the 10-Q weeks later with full footnotes.
Related glossary terms
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