Filing type comparison
10-K vs 10-Q vs 8-K: what each SEC filing means
A 10-K is the annual deep dive, a 10-Q is the quarterly update, and an 8-K is a current-event filing. Use the 10-K for baseline context, 10-Qs for recent operating changes, and 8-Ks for material events between periodic reports.
Search intent
Who this guide is for
Beginners comparing SEC filing forms and deciding which document answers their research question.
Use 10K Intel for source-linked examples, not investment advice.
Open the SEC document before trusting any summary or extracted signal.
Turn a filing into an alert only after you know what future change matters.
Step 1
10-K: annual baseline
The 10-K is the most complete recurring filing. It includes audited financial statements, risk factors, MD&A, business description, executive disclosures, and detailed footnotes.
Best for full-company context
Useful for year-over-year comparison
Primary document for annual risk and business changes
Step 2
10-Q: quarterly update
The 10-Q updates financial statements and MD&A during the year. It is usually shorter than a 10-K and helps track whether trends are improving, worsening, or changing direction.
Best for recent revenue, margin, liquidity, and cash flow movement
Compare against the latest 10-K baseline
Watch changed risk language and management explanations
Step 3
8-K: material event report
The 8-K reports important events between periodic filings. It can cover earnings releases, leadership changes, acquisitions, financings, delistings, auditor changes, or other material updates.
Best for fresh event monitoring
Item numbers explain the event category
Exhibits often contain the real substance
Research checklist
Use this before you act on a filing.
2. Need recent quarter movement? Read the 10-Q
3. Need a fresh event? Read the 8-K
4. Verify every summary against the SEC source
5. Build alerts around forms and events that matter to your thesis
Related filing guides
Build the filing context before reading a company page.
Annual report guide
How to read a 10-K filing
A 10-K is the annual source document for a public company. Start with the business, risk factors, MD&A, and financial statements, then compare the current filing against prior annual reports before deciding what deserves monitoring.
Quarterly report guide
10-Q filing guide: how to read quarterly reports
A 10-Q is the quarterly update between annual 10-K filings. Use it to track unaudited financial statements, MD&A explanations, liquidity, cash flow, risk-factor changes, and whether the company is confirming or breaking the story from the last annual report.
Current report guide
How to read an 8-K filing
An 8-K is a current report for material company events. The fastest way to read one is to identify the item number, open attached exhibits, and decide whether the event changes the company's operating, financial, or governance picture.
Activist ownership guide
Schedule 13D guide: how to read activist ownership filings
A Schedule 13D is a source filing for beneficial owners who cross 5% of a voting equity class and may have active plans or control-related intent. Read it for who owns the stake, how the position was built, Item 4 plans, funding, agreements, amendments, and what company-level disclosures should be monitored next.