The 10-K: a company's annual report, section by section
The 10-K is the most complete report a public company writes each year. It can run past 100 pages, but every 10-K follows the same layout. Once you know the map, you can find what matters in any company’s report in a few minutes.
The 10-K is not the glossy annual report
Many companies also mail owners a polished annual report with photos and an upbeat letter from the CEO. That booklet is mostly marketing. The 10-K is the version required by the SEC. It follows fixed rules, its financial statements are checked by an outside auditor (an independent accounting firm), and the top officers sign it. When the two disagree in tone, trust the 10-K.
The map: four parts, numbered items
Every 10-K is split into four parts. Each part holds numbered sections called Items. Because the numbers are the same in every 10-K, Item 7 at a phone maker covers the same topic as Item 7 at a bank.
| Part | What it covers | Items to know |
|---|---|---|
| Part I | The business and its risks | Item 1 Business, Item 1A Risk Factors, Item 3 Legal Proceedings |
| Part II | The year’s results and the numbers | Item 7 MD&A, Item 8 Financial Statements, Item 9A Controls |
| Part III | Leaders and their pay | Often just points to the proxy statement |
| Part IV | Attachments | Contracts and other exhibits |
Item 1, Business: what the company actually does
This section describes what the company sells, who buys it, who it competes with and how it is organized. Large companies often split into segments, which are separate lines of business that report their own results.
Look for two things. First, can you explain in one sentence how the company makes money? Second, does it depend heavily on a few customers or suppliers? Companies generally must say so when one customer accounts for 10% or more of sales. A business that leans on one big buyer is more fragile than it looks.
Item 1A, Risk Factors: what could go wrong
Here the company lists the risks it faces. Lawyers write much of it, so a lot is generic. Nearly every company warns that the economy could weaken or that it might be hacked.
The useful parts are specific. A named lawsuit, a loan coming due next year or a factory in one location is worth noting. The best trick is to compare this section with last year’s 10-K. A risk that is brand new, or one that has moved toward the top, often tells you what is worrying management now.
Item 7, MD&A: management explains the year
MD&A stands for Management’s Discussion and Analysis. It is the company’s own explanation of why the numbers changed. Why did sales rise? Why did costs grow faster? It also covers liquidity, meaning whether the company has enough cash, or can borrow enough, to pay its bills.
Read it with a friendly but skeptical eye. Good MD&A gives clear causes with numbers attached. Weak MD&A blames everything on the weather or the economy and moves on.
Item 8, Financial Statements: the numbers themselves
This is the core of the report. It holds the main statements:
- The income statement, which shows sales, costs and profit for the year.
- The balance sheet, which shows what the company owns and owes on the last day of the year.
- The cash flow statement, which shows the actual cash that came in and went out.
After the statements come the notes. They explain how the numbers were built: when a sale gets counted, what the debts look like and when they are due, what lawsuits are pending. Beginners often skip the notes. That is a mistake, because the surprises usually hide there.
The auditor’s report: the outside check
Item 8 also includes the auditor’s report. Most of the time it gives a clean opinion, meaning the auditor found that the statements fairly present the company’s results under the accounting rules. Wording that departs from the clean version is a big deal. So is a going-concern paragraph, where the auditor says there is substantial doubt (the rulebook’s own phrase) that the company can keep operating for another year.
Two nearby items are worth a glance. Item 9 reports any change of auditor and any disagreements with the old one. Item 9A reports whether management found a serious weakness in the company’s own checks on its numbers.
Maple Bikes Inc. reports that sales grew from $40 million to $50 million. That sounds great. Here is how three sections of its 10-K change the picture.
Step 1, overall growth. Growth was $50 million − $40 million = $10 million. As a percentage: $10 million ÷ $40 million = 25%.
Step 2, Item 1. The Business section says one sporting-goods chain bought 40% of Maple’s bikes this year. That is 40% × $50 million = $20 million.
Step 3, MD&A. Management explains that sales to that chain rose by $8 million, thanks to a new contract.
Step 4, the rest of the business. Take the big customer out. The chain bought $20 million this year and $8 million less last year, so $20 million − $8 million = $12 million last year. Everyone else bought $40 million − $12 million = $28 million last year and $50 million − $20 million = $30 million this year. Their growth was $30 million − $28 million = $2 million, which is $2 million ÷ $28 million, about 7%.
| Line | Last year | This year | Growth |
|---|---|---|---|
| Big customer | $12 million | $20 million | 67% |
| Everyone else | $28 million | $30 million | 7% |
| Total | $40 million | $50 million | 25% |
Step 5, Item 1A. A new risk factor says the chain’s contract ends in 18 months and may not be renewed.
Put together, the story shifts. Maple is mostly a 7% grower with one large, uncertain contract on top. No single section told you that. Reading three of them together did.
A smart reading order
- Item 1 to learn what the business does.
- The auditor’s report to make sure the numbers got a clean opinion.
- The financial statements, then the notes on anything that looks odd.
- MD&A to hear management’s explanation.
- Risk Factors, side by side with last year’s version.
Also compare more than one year. A single 10-K is a snapshot. Three or more show you a direction.
- 10-K
- The annual report a public company must file with the SEC.
- Item
- A numbered section of a 10-K; the numbers are the same for every company.
- Segment
- A separate line of business that reports its own results.
- MD&A
- Management’s Discussion and Analysis, the company’s own explanation of its results.
- Liquidity
- Whether a company has, or can get, enough cash to pay its bills on time.
- Notes
- The pages after the financial statements that explain how the numbers were built.
- Auditor
- An independent accounting firm that checks the financial statements and gives an opinion.
Where to see it on Filing.fyi
On any company page (start from the ticker list), the filing timeline shows each 10-K. The page refreshes its analysis after a new 10-K arrives. The four score cards, from the Piotroski F-Score to the Fog Index, are built mainly from the numbers and text in these reports.
- The 10-K is the official, audited annual report; the glossy booklet is marketing.
- Every 10-K uses the same numbered Items, so one map works for every company.
- Business, Risk Factors, MD&A and the financial statements with their notes are the core.
- Check the auditor’s opinion early, and compare risk factors with last year.
- The best insights come from reading sections together, not one at a time.
This lesson is education, not investment advice. Examples use made-up companies and round numbers unless a real filing is named.