Filings
Most of a 100-page annual report is boilerplate. Nine parts carry almost all of the signal. Here they are, in the order a professional reads them.
9 min read· Corva Research
You have forty minutes tonight and a company you are seriously considering. You open the 10-K, see 112 pages, and start at page one.
That is the mistake. Forty minutes later you are still inside Item 1, a section that barely changed from last year, and you have not reached a single number that would move your view. So the boring parts get skipped: the debt note, the margin story, the share count. Those are the parts that decide whether you are right.
Professionals do not read a 10-K front to back. They read it in a fixed order built to answer three questions fast:
Everything below is organised around those three questions.
Where to get one
Every 10-K is free on the SEC's EDGAR full-text search. Search the company, filter the form type to 10-K, open the latest. No account, no paywall. Skip the glossy PDF "annual report" on the investor-relations page. That one is marketing. The 10-K carries legal liability, so when the two disagree in tone, believe the 10-K.
A 10-K has a legally fixed structure. Once you know the map, you can skip most of it without anxiety, because you know exactly what you are skipping and why.
| Item | What it is | Read it? |
|---|---|---|
| Item 1 | Business: what the company does, segments, customers | Skim once, then only on re-reads |
| Item 1A | Risk factors | Yes, but only what changed |
| Item 1C | Cybersecurity (required since 2023) | Skim |
| Item 2 | Properties | Skip unless asset-heavy |
| Item 3 | Legal proceedings | Yes, it is short |
| Item 5 | Equity, buybacks, dividends | Yes, the buyback table |
| Item 7 | MD&A: management's own explanation | Yes, the core |
| Item 7A | Market risk (rates, FX, commodities) | Yes if leveraged or global |
| Item 8 | Audited statements and the notes | Yes, the notes especially |
| Item 9A | Controls and procedures | Yes, takes 60 seconds |
| Items 10–14 | Directors, pay, ownership | Usually incorporated by reference to the proxy |
Look at the last row. Items 10 through 14 are often not in the 10-K at all. They are incorporated by reference to the DEF 14A proxy statement. If you want to know how the CEO is really paid, and which targets trigger the bonus, that is a separate filing. It is frequently the more revealing of the two.
Risk factors are where most first-time readers waste their time. Much of the section is defensive boilerplate that has appeared nearly verbatim for years: competition is intense, we depend on key personnel, our stock price may fluctuate. Little of it is information.
The information is in what changed since last year. Companies rewrite risk factors when their lawyers believe a new risk has become material enough that failing to disclose it creates liability. That editing decision is a signal, and it is made by people with far better information than you have.
Do not read this year's risk factors. Diff them against last year's, and read only what is new, what moved up the list, and what quietly disappeared.
Open last year's 10-K in a second tab and compare. A newly promoted risk factor tells you where the ground is moving, especially one that climbs toward the top, since companies are expected to lead with the most significant risks. A risk that vanished deserves the same attention. Either it genuinely resolved, or the company would rather you stopped looking at it.
Management's Discussion and Analysis is the only part of a 10-K where management explains the numbers in their own words, under liability. It is the highest-value section in the document and where you should spend a third of your time.
Any competent MD&A decomposes revenue growth into its drivers: price versus volume, organic versus acquired, constant-currency versus reported. These are not the same quality of growth and should not carry the same multiple.
A company growing revenue on volume is winning customers. A company growing on price is testing how much pricing power it has, and that test eventually ends. A company growing on acquisition bought the growth, and you should be asking what it paid. If the MD&A does not give you the decomposition, that omission is itself a finding.
MD&A narrative is shaped by investor relations. The segment table below it is produced by accounting. When they disagree, believe the table.
The specific pattern to look for: enthusiastic prose about a small, fast-growing segment, sitting directly above a table showing the large segment, the one that pays the bills, quietly slowing down. It is common, and it is legal, because nothing in the prose is false.
The margin question
If operating margin moved more than a point or two in either direction, the MD&A owes you an explanation. Find it, and check whether the cause is structural (mix shift, pricing, operating leverage) or one-off (a legal settlement, a restructuring charge, an insurance recovery).
Structural changes should update your model. One-offs should not. Management often blurs the two on the way up, then separates them very carefully on the way down.
The three statements themselves you have probably already seen in summary form on any financial data site. What you cannot get anywhere else, and the real reason to open the filing, is the notes. The accounting policy choices live there, and accounting policy choices are where reported earnings get made.
This single comparison catches more problems than any ratio. Net income is an opinion shaped by accounting judgment; operating cash flow is substantially harder to manufacture. When the two pull apart year after year, with earnings rising while cash flow flattens or falls, the gap has to be sitting somewhere on the balance sheet.
Usually it is in receivables (sales booked but not collected, which can mean the company is effectively financing its customers to keep growth going) or in inventory (goods produced but not sold). One year of divergence is noise. Three consecutive years is a thesis.
Sixty seconds. You are looking for one phrase: material weakness. Management must assess its own internal control over financial reporting, and for most larger filers the external auditor attests to it separately. A disclosed material weakness means the company itself is telling you its numbers may not be reliable. It is relatively rare, it is disclosed in plain language, and it should stop the analysis until you understand it.
Item 5 contains a month-by-month table of shares repurchased and the average price paid for the final quarter of the year. Compare that average to where the stock traded over the period. Management buying into weakness is a different signal from management buying steadily at any price to mop up dilution from stock compensation, and the second is far more common than the first.
Then check whether the share count actually fell. A buyback that only absorbs new issuance returns nothing to you.
Short by design. You are checking for anything that could be existential rather than routine: a regulatory action against the core product, a patent case on the main revenue line, a class action already through certification.
The 30-minute checklist
1. Compare Item 1A against last year. What is new, promoted, gone?
2. Item 7: decompose revenue into price, volume and acquisition.
3. Item 7: explain every margin move of more than a point.
4. Check MD&A tone against the segment table.
5. First note: any accounting policy change?
6. Segment note: which line actually earns the money?
7. Reconcile net income to operating cash flow, three years.
8. Debt note: maturity wall and covenants.
9. Item 9A: search "material weakness".
Thirty minutes gets you the shape of the business and the integrity of the accounting. It does not get you a view. A 10-K is a single company describing a single year in its own words, and three things sit permanently outside its frame:
Cover to cover, a large-cap 10-K takes four to six hours. The focused pass above, covering Item 1A, Item 7, the Item 8 notes and Item 9A, takes about 30 minutes and captures most of what would change a valuation.
The 10-K is the audited filing required by the SEC, written for regulators, carrying legal liability. The glossy annual report is a marketing document built around the same figures. Where the two differ in emphasis, the 10-K is the reliable one.
A large accelerated filer, meaning public float of $700 million or more, files within 60 days of its fiscal year end. An accelerated filer has 75 days. A non-accelerated filer has 90 days. A company expecting to miss its deadline files a Form 12b-25 explaining why, and that notification is worth reading on its own.
The 10-K. It is the audited, liability-bearing document, and reading it first means you arrive at the call already knowing which questions matter, and able to notice which ones management declines to answer.
Corva runs this pass across 19 sections, computing every figure from the filed statements and cross-checking it against SEC EDGAR. Where a number cannot be found, it says so rather than inventing one. Then 108 checklist questions make you write your own answer down. It never tells you what to buy.
Research a company free →Live financials on any listed company are free. No card.
Corva is a research tool, not a broker or investment adviser, and nothing here is a recommendation to buy, sell or hold any security. The filing requirements described above reflect SEC rules for domestic registrants and differ for foreign private issuers, smaller reporting companies and newly public companies. Verify anything you intend to act on against the primary filing. See terms and disclaimer.