What Is a 10-Q?
A 10-Q is the quarterly financial report that public companies must file with the Securities and Exchange Commission after each of their first three fiscal quarters. The fourth quarter is not filed separately because it is covered by the annual 10-K.
Large accelerated filers must file within 40 days of quarter-end, and smaller companies within 45 days. Like the 10-K, every 10-Q is freely accessible on the SEC's EDGAR system.
How It Differs from a 10-K
The biggest difference is that 10-Q financial statements are unaudited, whereas the 10-K's are audited by an independent accounting firm. The 10-Q is also far shorter: it updates the financials and MD&A but does not repeat the full business description and only flags material changes to risk factors.
Because it arrives quickly after quarter-end, the 10-Q trades some depth and assurance for timeliness, which is exactly what markets need between annual reports.
Example
Consider a company with a fiscal year ending December 31. It files 10-Qs for the quarters ending March 31, June 30, and September 30, then wraps the full year, including the fourth quarter, into its 10-K. An analyst wanting standalone fourth-quarter numbers subtracts the nine-month figures in the third-quarter 10-Q from the annual totals in the 10-K.
Why It Matters
Quarterly filings are the heartbeat of public markets: earnings season revolves around the numbers ultimately detailed in 10-Qs, and stock prices react sharply to what they reveal. They let investors spot inflections in growth, margins, and cash flow months before the annual report.
For analysts updating financial models, dropping the latest 10-Q numbers into a comps sheet or three-statement model is a routine and essential task.
