How to Read a 10-K and 10-Q as an Investment Banker

Introduction

Experienced bankers rarely read a 10-K from the first page to the last. An annual report for a large company often runs well past a hundred pages, and the parts that matter most for a valuation or a deal, the financial statements and the notes behind them, sit in the second half of the document. The opening sections describe the business and its risks in language reviewed by lawyers; the numbers that drive a model are in Item 8. Knowing the structure well enough to go straight to the right item, and knowing which items quietly change the numbers, is a basic working skill.

The Securities and Exchange Commission (SEC) requires US public companies to report through a small set of forms. The Form 10-K is the annual report, with audited financial statements prepared under US generally accepted accounting principles (GAAP). The Form 10-Q is the quarterly report, with unaudited statements. The Form 8-K reports material events as they happen, including the earnings release. Each has a fixed structure set by SEC rules, so once the layout is familiar, any company's filing can be navigated the same way.

The three forms differ in timing, in the level of assurance behind the numbers and in what they are for. The SEC's instructions to Form 10-K require the annual report within 60 days of fiscal year end for large accelerated filers, 75 days for accelerated filers and 90 days for all other registrants. The instructions to Form 10-Q set 40 days after quarter end for large accelerated and accelerated filers and 45 days for everyone else.

The fourth quarter has no 10-Q: its results appear in the 10-K, so fourth-quarter figures are often derived by subtracting the nine-month year-to-date numbers from the full year. That arithmetic matters when building last-twelve-month figures, covered in calculating LTM figures.

Form 10-K

The annual report that US public companies file with the SEC. It contains a description of the business, risk factors, management's discussion and analysis, audited financial statements with notes, disclosures on internal controls, and exhibits such as material contracts.

The 8-K deserves more attention than it usually gets. Most companies publish their quarterly earnings in a press release furnished under Item 2.02 of Form 8-K, days or weeks before the 10-Q or 10-K arrives, and that release is where adjusted earnings before interest, taxes, depreciation and amortization (EBITDA), adjusted earnings per share (EPS) and guidance usually appear. The word "furnished" matters: the form's instructions treat Item 2.02 information as furnished rather than filed unless the company says otherwise, which limits some of the liability attached to it. The figures in the release are also unaudited and occasionally change before the formal report is filed, so a model built on the release should be checked against the 10-Q or 10-K once it arrives. Other 8-K items flag events a banker needs to know about immediately: a material definitive agreement (Item 1.01), a completed acquisition or disposition (Item 2.01), a change of auditor (Item 4.01), or a conclusion that previously issued financial statements can no longer be relied on (Item 4.02).

The 10-K is organized into four parts and numbered items set by the form. Most companies present them in that order; a few arrange the report their own way, placing management's discussion of results ahead of the risk factors for example, and add a cross-reference index that maps each item to its pages. Grouped by part, the items a banker uses are these:

Two features of this layout surprise newcomers. First, the risk factors in Item 1A are long and mostly generic, because they are written to protect the company from claims that it failed to warn investors; the useful ones are those specific to the company, and especially new ones. Second, the most useful documents for a leveraged finance banker are often not in the body of the 10-K at all but in the exhibits, where the full text of the credit agreement shows the definition of EBITDA used for covenants, the baskets for additional debt and the restrictions on dividends.

The Auditor's Report and Critical Audit Matters

Item 8 usually opens with the auditor's report, which most readers skip after confirming the opinion is unqualified. For most public companies it now contains something more useful. Auditors must describe critical audit matters, the areas of the audit that required the most difficult judgments. According to the Center for Audit Quality's review of the first year of critical audit matters, the requirement took effect for large accelerated filers with fiscal years ending on or after June 30, 2019, and for other companies subject to it from fiscal years ending on or after December 15, 2020. Across the S&P 100, the most common topics in the first year were taxes, goodwill and intangibles, contingent liabilities and revenue.

Critical audit matter

A matter arising from the audit that was communicated to the audit committee, relates to accounts or disclosures that are material to the financial statements, and involved especially challenging, subjective or complex auditor judgment. Auditors of most US public companies describe each one in their report, along with how it was addressed.

For a banker, the list is a map of where the numbers depend most on judgment: an impairment test resting on aggressive growth assumptions, a revenue estimate on long-term contracts, or a tax reserve for disputed positions. Those are the same areas a buyer's diligence team will want to test.

The order in which a banker works through a filing depends on the task, but for a first look at a company the sequence below gets to the important information fastest:

The order puts the numbers before the narrative on purpose. Reading the statements first lets a banker form questions, such as why receivables grew faster than revenue or why capital expenditure fell, and then read MD&A looking for the answers, rather than absorbing management's framing first. A refresher on what each statement measures is in the three financial statements explained.

The Notes Where Adjustments Come From

The notes are where reported figures are explained, and where most adjustments begin. A few notes are read on almost every deal:

Each of these is worth reading in full rather than skimming, because the detail often changes a number in the model. A debt note may show that a term loan matures within the next year, which changes the liquidity picture, and a revenue note may show that one customer provides a large share of sales.

Reading the notes well is mostly a matter of reading them against each other. The lease note and the debt note together show the company's total fixed obligations; the tax note and the segment note together show where profits are earned and taxed; the stock compensation note and the cover page together give the diluted share count. The full approach to the notes is set out in reading the footnotes, and the segment note in particular in segment reporting.

MD&A: Liquidity and Critical Accounting Estimates

Two parts of MD&A repay careful reading. The liquidity and capital resources discussion explains how the company funds itself, what its committed credit facilities are, and how much cash sits overseas or is otherwise restricted. The critical accounting estimates section lists the judgments management considers most sensitive, such as revenue on long-term contracts, goodwill impairment testing, inventory reserves or uncertain tax positions, and often quantifies how much a change in an assumption would move the results. For a buyer, that section is a ready-made list of what to test in diligence.

Management's discussion and analysis (MD&A)

The section of a 10-K or 10-Q, Item 7 in the annual report, in which management explains the company's results, financial condition, liquidity and capital resources, and the critical accounting estimates behind the figures, through the eyes of management.

The results of operations discussion, governed like the rest of MD&A by Item 303 of Regulation S-K, must explain material changes in revenue by how much came from price, from volume and from new products, and describe unusual events that materially affected income. That split is what a revenue projection needs, because growth driven by price increases behaves differently in a downturn from growth in units sold.

The Cover Page and the Share Count

The cover page of a 10-K or 10-Q states the number of shares outstanding as of a date shortly before filing, usually more recent than the balance sheet date. Bankers use that figure as the starting point for the share count in a market capitalization, then add the dilutive effect of options, restricted stock units and convertible securities using the information in the equity and compensation notes. The method for those adjustments is explained in basic vs diluted EPS.

A 10-Q is shorter than a 10-K and organized differently. Part I contains the condensed financial statements (Item 1), MD&A (Item 2), market risk (Item 3) and controls (Item 4); Part II covers legal proceedings, updates to risk factors, share repurchases and exhibits. Three features change how it is read:

Risk factors in a 10-Q are typically updated only for material changes, so a short Item 1A in a quarterly report usually means nothing changed rather than that the risks disappeared. A new risk factor added mid-year, by contrast, is worth reading carefully. The same logic applies to accounting policies: the quarterly MD&A explains the period's changes but rarely repeats the annual discussion of critical accounting estimates, so the latest 10-K remains the reference for how the numbers are measured, and the 10-Q is read for what has changed since. The subsequent events note in either report deserves a look too, because it discloses debt raised, acquisitions agreed or litigation settled after the balance sheet date but before the filing.

Some of the most important information in a filing is not in the numbers but in the way the filing arrives. A late filing, a change of auditor or a restatement each signal that something went wrong in the financial reporting process, and each has its own disclosure:

Super Micro Computer showed several of these at once. Its annual report for the year ended June 30, 2024 explains that it was unable to file on time, that its auditor resigned on October 24, 2024 after raising concerns about governance, transparency and internal controls, and that a new auditor was appointed in November 2024. Nasdaq granted the company until February 25, 2025 to file all its delinquent reports. For anyone advising on a financing or transaction involving the company in the meantime, the absence of audited financial statements was the central issue.

How restatements and changes in accounting work once they are announced is covered in restatements, accounting changes and estimates, and the institutions that set and enforce the rules behind these filings in who sets accounting rules.

The 10-K and 10-Q are the core, but a banker working on a live situation reads several other filings, each covering something the periodic reports do not.

Proxy Statements, Deal Documents and Ownership Filings

The annual proxy statement sets out executive compensation in detail, including the payments executives would receive on a change of control, which become a real cost in a sale of the company. In a merger that needs a shareholder vote, the merger proxy, or a registration statement on Form S-4 when the buyer issues shares, contains a background section describing how the deal was negotiated and a summary of the financial analyses behind each bank's fairness opinion. Bankers read those sections closely on comparable deals, because they show the multiples, discount rates and projections other advisers actually used.

Ownership filings complete the picture. Investors who acquire more than 5% of a company's voting shares report the stake on Schedule 13D, if they may seek to influence the company, or Schedule 13G, if they are passive. A new 13D from an activist investor is often the first public sign that a company may come under pressure to sell assets, return capital or put itself up for sale.

Smaller Reporting Companies and Foreign Filers

Not every registrant files the same package. Smaller reporting companies may present scaled financial statements: the SEC staff's Financial Reporting Manual on required audited statements, reproduced on PwC Viewpoint, shows two years of income, equity and cash flow statements for them, against three for other reporting companies, with two balance sheets in both cases. Foreign private issuers file their annual report on Form 20-F rather than a 10-K, generally with a later deadline, and furnish interim information on Form 6-K under home-country practice rather than filing 10-Qs. A banker comparing a US company with a foreign peer therefore often has fewer and less frequent periods to work with.

From Filing to Spreadsheet

All of these filings are free on the SEC's Electronic Data Gathering, Analysis, and Retrieval (EDGAR) system, which also offers full-text search across filings and structured financial data tagged in eXtensible Business Reporting Language (XBRL). The tagged data makes it possible to pull a company's statements into a spreadsheet without retyping them, but bankers still check the figures against the filing itself, because tagging errors and company-specific line items are common. The earnings release deserves the same care in the other direction: its non-GAAP measures are defined by the company, and the reconciliation to the nearest GAAP figure, which public companies must provide, shows exactly what was excluded, as explained in non-GAAP measures.

The habit that ties the reading together is to treat the filing as a source of questions rather than answers. The statements show what changed, the notes show how the numbers were measured, MD&A gives management's explanation, and the risk factors and exhibits show what could change the picture. A banker who reads in that order, and writes down the questions each part raises, ends up with both a model built on the right numbers and a list of what to ask management. Most of the remaining articles in this guide explain the accounting behind specific notes, and the list of signs that reported earnings may be flattered is collected in accounting red flags.