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Checklist for Reviewing a 10-K or 10-Q

By Equicurious intermediate 2025-12-12 Updated 2026-03-21
Checklist for Reviewing a 10-K or 10-Q
In This Article
  1. Why a Systematic 10-K/10-Q Review Matters
  2. The 10-K Structure (Items 1-15)
  3. Priority Sections for Equity Investors
  4. High-priority (read every filing)
  5. Medium-priority (scan annually)
  6. Lower-priority (reference as needed)
  7. Time-Efficient Reading Order (The 60-Minute Workflow)
  8. What to Compare Year-Over-Year
  9. Footnotes That Matter Most
  10. Risk Factors Analysis (Reading Between the Lines)
  11. Worked Example: 60-Minute 10-K Review (Industrial Company)
  12. Implementation Checklist (Tiered by ROI)
  13. Essential (do for every 10-K/10-Q)
  14. High-impact (do for positions >3% of portfolio)
  15. Situational (when red flags appear)
  16. The core principle

The practical point: a 10-K is 200-400 pages, and the sections that matter most take about 60 minutes to read. Most investors read filings inefficiently (or skip them entirely). The fix is a priority-ordered workflow that extracts 80% of the signal in 20% of the time.

Why a Systematic 10-K/10-Q Review Matters

SEC filings contain forward-looking information that earnings calls often obscure. Filings with higher linguistic complexity (Fog Index above 19.4) in the MD&A section show 4.7% lower earnings persistence compared to more readable filings (Li, 2008). That complexity is frequently intentional: management increases word count and sentence length when performance deteriorates.

Why this matters: companies file 10-Ks annually (within 60-90 days of fiscal year-end, depending on filer size) and 10-Qs quarterly (within 40-45 days). Missing a material disclosure in these filings means you’re relying on secondhand summaries with their own biases.

The 10-K Structure (Items 1-15)

A 10-K contains 15 required items across four parts. Here’s the full map:

Part I (Business Context)

Part II (Financials)

Part III (Governance)

Part IV (Exhibits)

The point is: you don’t need all 15 items. For equity investing, Items 1A, 7, 8, and 9A contain roughly 85% of decision-relevant information.

Priority Sections for Equity Investors

High-priority (read every filing)

  1. Item 1A: Risk Factors - Companies must disclose material risks. Year-over-year word count increases of >15% correlate with deteriorating business conditions. New risks added mid-year (in 10-Qs) often signal emerging problems.

  2. Item 7: MD&A - Management explains operating results, liquidity, and capital resources. Watch for vague language replacing specific guidance, and compare explanations against actual numbers.

  3. Item 8: Financial Statement Notes - The notes (not the statements themselves) contain the detail. Priority notes include: revenue recognition policies, segment reporting, debt maturities, lease obligations, and goodwill impairment testing.

  4. Item 9A: Controls and Procedures - Material weaknesses in internal controls precede restatements 34% more often than clean control opinions.

Medium-priority (scan annually)

Lower-priority (reference as needed)

Time-Efficient Reading Order (The 60-Minute Workflow)

Most investors read filings front-to-back. That’s inefficient. Here’s a priority-ordered approach:

Minutes 0-5: Filing metadata check

Minutes 5-20: Financial statement notes (Item 8)

Minutes 20-40: MD&A (Item 7)

Minutes 40-50: Risk factors (Item 1A)

Minutes 50-60: Controls and quick governance scan

Why this matters: this sequence builds context before narrative. You read the numbers first, then evaluate whether management’s explanation matches.

What to Compare Year-Over-Year

Trend analysis beats point-in-time reading. Build these YoY comparisons:

MetricWhere to FindRed Flag Threshold
Risk factor word countItem 1A>15% increase
Revenue by segmentNote to Item 8>10% decline in any segment
Gross marginItem 7 or calculated from Item 8>100 bps compression for 2+ years
Contract liabilitiesBalance sheet note>20% decline (deferred revenue drawdown)
Days sales outstandingCalculate from receivables/revenue>15 days increase
Goodwill/total assetsBalance sheet>30% ratio with <10% fair value cushion

The point is: YoY changes reveal trajectory. Absolute numbers reveal current state. You need both.

Footnotes That Matter Most

Footnotes are where companies bury material information. Prioritize:

  1. Revenue recognition - Changes in timing, judgment, or contract modifications
  2. Segment reporting - Reclassifications that obscure deterioration
  3. Related party transactions - Conflicts of interest disclosures
  4. Subsequent events - Material events between period-end and filing date
  5. Contingent liabilities - Probability and magnitude of potential obligations
  6. Stock-based compensation - Dilution and vesting acceleration terms

Why this matters: in Enron’s 2000 10-K, related party transactions with SPEs were disclosed in footnotes but required careful reading to identify the magnitude of off-balance-sheet obligations.

Risk Factors Analysis (Reading Between the Lines)

Risk factors are boilerplate until they change. Your workflow:

  1. Download prior year’s Item 1A and current year’s
  2. Run a diff (or manually compare section headers)
  3. Flag additions - New risks are often the most informative
  4. Note deletions - Removed risks may indicate resolved issues or strategic de-emphasis
  5. Measure expansion - Risks with substantially more detail often reflect heightened concern

Common risk categories to track:

Worked Example: 60-Minute 10-K Review (Industrial Company)

Your situation: You’re evaluating a position in a mid-cap industrial company (market cap $8.2 billion) after its 10-K release.

Minutes 0-5: Filing check You confirm the 10-K filed on day 58 of the 60-day window (large accelerated filer). No same-day 8-K. Auditor unchanged.

Minutes 5-20: Notes analysis

You flag the segment margin compression and tight goodwill cushion.

Minutes 20-40: MD&A review Management attributes margin compression to “supply chain normalization” and “strategic investments.” You note they discontinued reporting backlog-to-revenue ratio (previously 1.4x, now unreported). Liquidity section confirms the debt maturity but emphasizes “strong access to capital markets.”

Minutes 40-50: Risk factors Item 1A word count: 18,400 words (prior year: 15,200 words), a 21% increase. New risk added: “Dependence on government contracts subject to continuing resolutions and potential sequestration.” Customer concentration: top customer now 14% of revenue (previously 11%).

Minutes 50-60: Controls and 8-K check No material weaknesses. Recent 8-K shows CFO departure “to pursue other opportunities” (no successor named).

Your assessment: The filing reveals three concerns (segment margin compression, goodwill cushion, CFO departure) that weren’t visible from the earnings call. You reduce your price target by 15% based on margin trajectory and add a thesis-invalidation trigger: if the next 10-Q shows Equipment segment margin below 11%, you exit.

Implementation Checklist (Tiered by ROI)

Essential (do for every 10-K/10-Q)

High-impact (do for positions >3% of portfolio)

Situational (when red flags appear)

The core principle

The lesson worth internalizing: a 10-K review is not about reading everything. It’s about reading the right sections in the right order, with explicit YoY comparisons and quantified thresholds for concern. The 60-minute workflow (notes, then MD&A, then risks, then controls) builds context before narrative, catching disclosures that management would prefer you overlook.

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Disclaimer: Equicurious provides educational content only, not investment advice. Past performance does not guarantee future results. Always verify with primary sources and consult a licensed professional for your specific situation.