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How to Read a 10-K: Finding Risks, Moats, and Red Flags

A step-by-step approach to reading SEC filings so you can identify what matters and skip the noise.

Fundamental Research Team
12 min read
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Video Lesson

Prefer watching? This video covers the key concepts from this article.

How to Read a 10-K

The 10-K is the annual report filed by US public companies. It’s long, dense, and often intimidating — but it contains the most complete picture of a business.

Where to Focus

1) Business Overview (Item 1)

Look for:

  • How the company makes money
  • Key products and segments
  • Customer concentration
  • Competitive landscape

2) Risk Factors (Item 1A)

Risk factors can be boilerplate, but changes matter.

Watch for:

  • Regulatory threats
  • Dependency on a supplier
  • Cyclicality and macro sensitivity
  • Litigation

3) Management’s Discussion and Analysis (MD&A)

MD&A is where management explains results.

Check:

  • Revenue drivers (price vs volume)
  • Margin expansion or contraction
  • One-time adjustments
  • Forward-looking commentary

4) Financial Statements

Look beyond the headline numbers:

  • Income statement: margins, growth, profitability
  • Balance sheet: leverage, liquidity, working capital
  • Cash flow: cash generation, capex needs, buybacks/dividends

5) Notes and Accounting Policies

This is where surprises hide:

  • Revenue recognition
  • Stock-based compensation
  • Lease obligations
  • Segment reporting

Red Flags to Watch

  1. Consistently negative free cash flow without a clear plan
  2. Rising debt without rising earnings power
  3. Heavy dilution from stock-based compensation
  4. Weak disclosures or confusing segment reporting
  5. Aggressive adjustments that make results look better

A Simple Workflow

  1. Read business overview
  2. Scan risk factors for what’s unique
  3. Read MD&A for drivers
  4. Check cash flow vs earnings
  5. Review balance sheet leverage

Conclusion

You don’t have to read every word. The goal is to build a clear, evidence-based narrative of how the business works, what could break, and whether the valuation reflects those risks.