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10-K Filing

OVERVIEW

A 10-K is the annual report every U.S.-listed company is legally required to file with the Securities and Exchange Commission. It is the most detailed disclosure document a public company produces — more thorough than the shareholder annual report — and covers audited financial statements, risk factors, management discussion and analysis (MD&A), executive compensation, legal proceedings, and business segment detail.

Note

Every statement in a 10-K is filed under legal liability. Misstatements expose executives to SEC enforcement and shareholder litigation, making 10-Ks significantly more conservative in language than earnings calls or press releases.

DOCUMENT STRUCTURE

The SEC mandates a four-part standard format across all filers.

Part Contents
Part I Business description, risk factors, legal proceedings
Part II Selected financial data, MD&A, audited financial statements (income statement, balance sheet, cash flow statement, footnotes), market risk disclosures
Part III Executive compensation, director and officer ownership, related-party transactions
Part IV Exhibits and material contracts

Filing Deadlines by Filer Size

Filer Type Public Float Deadline After Fiscal Year-End
Large accelerated filer ≥ $700 million 60 days
Accelerated filer $75M – $700M 75 days
All other filers < $75 million 90 days

Note

Companies also file quarterly 10-Q reports between annual 10-Ks. 10-Qs are unaudited and less detailed than the annual filing.

HOW TO USE

Building Financial Models

Fundamental analysts source model inputs directly from 10-K statements rather than press releases. The 10-K figures are audited and are the numbers used in official filings for banks, ratings agencies, and index providers.

Tracking Risk Factor Changes Year Over Year

Read the risk-factors section comparatively across annual filings. A risk factor appearing for the first time — a new lawsuit, a customer concentration disclosure, a going-concern warning — is a materially informative signal that rarely receives separate news coverage.

Forensic and Short-Side Analysis

Short sellers and forensic analysts focus on footnotes to identify:

  • Aggressive revenue-recognition policies
  • Off-balance-sheet obligations
  • Related-party transactions absent from headline numbers

Monitoring Management Candor Over Time

Long-term holders use multi-year 10-Ks to track how stated risk factors evolve, which serves as a proxy for how honestly management is assessing the business.

Tip

Compare the Non-GAAP figures emphasized in earnings releases against the GAAP figures in the 10-K. Reconciliation tables are required precisely because the two frequently diverge.

WORKED EXAMPLE

Apple FY2024 10-K — filed October 31, 2024, for the fiscal year ended September 28, 2024.

Metric Value
Total net sales $391.04 billion
Net income $93.74 billion
Diluted EPS $6.08

Key disclosures found in the filing but absent from earnings-call commentary:

  • China market softness language in the risk-factors section
  • EU Digital Markets Act regulatory exposure
  • Antitrust litigation risk tied to Google default-search payments (>$20 billion/year)
  • Segment-level Services revenue tables enabling margin-mix modeling

Tip

Detail at this granularity — segment breakdowns, litigation exposure figures, regulatory risk language — does not appear in press releases. The 10-K is the primary source.

LIMITATIONS

Limitation Detail
Backward-looking Reports completed fiscal year data, filed up to 90 days after year-end; never a real-time business picture
Defensive risk language Risk factors are drafted by legal teams to preempt litigation; presence of a risk factor does not indicate management believes it is likely
GAAP vs. Non-GAAP divergence Adjusted metrics in earnings releases often differ meaningfully from 10-K GAAP figures
Audit limitations A clean 10-K does not guarantee fraud-free books — Enron and Wirecard filed audited statements for years before collapse

Note

The 10-K is a required disclosure document, not a marketing document. Read it alongside earnings calls and investor presentations, not as a substitute for them.

  • 13F Filing
  • P/E Ratio
  • Share Dilution
  • Secondary Offering
  • IPO