Quarterly Report (10-Q)

A quarterly report, officially known as Form 10-Q, is a comprehensive financial report filed with the SEC by all publicly traded companies three times per year (Q1, Q2, Q3 — the Q4 report is replaced by the annual 10-K). Unlike the annual 10-K, the 10-Q contains unaudited financial statements, though they must be reviewed by the company's independent auditors. The filing deadline is 40 days after quarter-end for large accelerated filers (market cap >$700M) and 45 days for all others.

The 10-Q contains two main parts: Part I covers financial information including condensed financial statements (income statement, balance sheet, cash flow statement, statement of stockholders' equity), management's discussion and analysis (MD&A) of financial condition and results, quantitative and qualitative disclosures about market risk, and internal control evaluations. Part II covers other information including legal proceedings, risk factors (if changed), unregistered sales of equity, defaults on senior securities, mine safety disclosures, and exhibits.

The MD&A section is arguably the most valuable for investors — it provides management's narrative explanation of financial results, discussing why revenue grew or declined, margin changes, capital allocation decisions, and known trends or uncertainties. Most companies also issue an earnings press release and hold an earnings call on the same day or shortly before the 10-Q filing. The press release highlights key metrics and guidance, while the call allows analysts to ask questions. The 10-Q itself is more detailed and legally binding than the press release — if there's ever a discrepancy, the 10-Q is the authoritative source.