How to read a 10-K: where to start and what to investigate next

Confirm the company and reporting period#

Use SEC EDGAR or the verified investor-relations site. Match the legal entity, fiscal year end and filing date. Check for amendments and later quarterly or event filings that may change the picture.

A foreign private issuer may use Form 20-F rather than 10-K. An annual report on a company's website may also contain presentation material beyond the filed form. Identify the document before applying a reading template.

Read Item 1 to explain the business#

Write one sentence identifying who pays, what they buy and how the company delivers it. Then look for segments, customer dependence and the main operating conditions.

For a fictional equipment supplier, you might learn that product sales create most revenue but maintenance contracts provide recurring income. That distinction gives you a better question than “is the company growing?” You can investigate which activity is growing and with what economics.

Use Item 1A to challenge the first impression#

Risk factors describe uncertainties and exposures. Do not treat every risk as equally likely, but do not dismiss the section because some language is familiar.

Compare material changes with the prior filing. If customer concentration or refinancing becomes more prominent, find the related amounts and terms in the notes. A risk statement may identify the issue without quantifying its current size.

Read Item 7 with a pencil beside the numbers#

Management's Discussion and Analysis explains results, liquidity and other matters from management's perspective. Identify the stated reasons for changes in revenue, costs and cash flow.

For each explanation, find the supporting figure. If growth reflects an acquisition, look for the contribution and timing. If management emphasises an adjusted measure, retain its definition and reconciliation alongside the reported result.

Use Item 8 and the notes to verify#

The financial statements show performance, financial position and cash flows. Notes explain policies, estimates, segments, debt, commitments and other details needed to interpret them.

Suppose the headline says cash increased. The cash-flow statement may show that the increase came mainly from borrowing rather than operations. The debt note then explains when that borrowing must be repaid. You have followed one claim through several connected disclosures.

Read the auditor's report too. Do not assume that an audit opinion predicts future viability or investment performance. A disclosed control issue, going-concern matter or accounting qualification deserves careful attention to its actual wording.

Finish with a small research record#

Record the document, period, section and the figures you relied on. Summarise how the company earns money, what changed, the main financial risk and the next question.

Then read later filings relevant to that question. A well-read annual report can still be stale after a major financing or acquisition. The SEC filing guide helps select the next document; reading financial statements together explains how to connect the accounts.