The 10-Q: The Quarterly Report
A lighter, unaudited version of the annual report, filed for the first three quarters. Its value lies in the comparison to the same quarter last year.
MadStockAlerts Research · Updated August 28, 2026
What to take away
- Filed for Q1, Q2 and Q3; the fourth quarter is covered by the Form 10-K.
- It is reviewed but not audited, which is a real difference in assurance.
- It presents both the quarter and the year to date.
- Sequential and year-over-year comparisons answer different questions.
- The headline numbers are in the press release; the filing carries what it omitted.
- Quarterly statements are reviewed rather than audited, which is why the fourth quarter is where adjustments surface.
MAD Academy Training Video · 0:45
Lighter, Faster, and Unaudited
The quarterly report arrives sooner and carries less assurance, which changes how much weight a single quarter deserves.
This lesson is part of a Stock Alerts + Tools plan.
What it contains
Condensed financial statements, a shorter MD&A, updates to legal proceedings and to risk factors, and disclosure of any unregistered sales of equity. It assumes the reader has the 10-K and only reports what has changed.
There is no Q4 10-Q. The fourth quarter has to be derived by subtracting the first three quarters from the annual figures, which is why fourth-quarter numbers are sometimes quoted inconsistently between sources.
That derivation also means Q4 absorbs every annual true-up: inventory write-downs, bonus accruals, tax adjustments and impairments that were estimated through the year and settled at the end. A fourth quarter that looks unusual frequently looks unusual for accounting reasons rather than operating ones.
Reviewed, not audited
An audit involves testing and verification and results in an opinion. A review is substantially narrower: inquiry and analytical procedures, with no opinion expressed.
Quarterly figures are therefore held to a lower standard of assurance than annual ones, and restatements more often affect quarters than years. This is not a reason to distrust them; it is a reason to treat a single quarter as a less settled number than an audited annual one.
Which comparison to use
| Comparison | Answers | Weakness |
|---|---|---|
| Year over year | Is the business growing, seasonality removed | Slow to reveal a recent inflection |
| Sequential | What has happened most recently | Confounded by seasonality |
| Trailing twelve months | The current run rate, smoothed | Slow to reflect a sharp change |
For a seasonal business, sequential comparisons are close to meaningless without adjusting for the season. A retailer's Q1 is always far below its Q4, and reporting that as a collapse would be an error that the year-over-year comparison avoids entirely.
The reverse trap also exists. A business whose growth stopped six months ago still shows positive year-over-year figures for two more quarters, because it is being compared to a period before the change. Sequential data sees the inflection first and year-over-year data confirms it later.
Where the news usually is
The headline figures are in the press release hours before the 10-Q is filed. What the 10-Q adds is everything the release omitted: the full statements, the updated risk factors, the legal proceedings, and any subsequent events.
Reading the filing after reading the release is where the difference between them shows up, and the difference is frequently the story. A release that celebrates a record quarter alongside a filing that adds a new risk factor about a major customer has told two things, and only one of them was in the headline.
- The statementsAlmost always released hours earlier in the earnings press release
- MD&AManagement's own account, usually consistent with the call
- Changes to risk factorsOnly what changed since the 10-K is restated here
- Legal proceedingsNew matters, and the first quantification of old ones
- Subsequent events noteThings that happened after the quarter closed, disclosed nowhere else
What review means, and what it does not
The annual financial statements are audited. The quarterly ones are reviewed, and the difference in the level of assurance is substantial rather than technical.
| Audit | Review | |
|---|---|---|
| Assurance given | Reasonable, stated positively | Limited, stated negatively |
| Wording | The statements present fairly | We are not aware of any material modifications needed |
| Procedures | Testing, confirmation, physical verification | Inquiry and analytical procedures |
| Internal controls | Tested, for accelerated filers | Not tested |
The wording difference in the second row is the whole distinction. An audit asserts something; a review states that nothing came to attention. Quarterly figures are therefore held to a lower standard by design, which is one reason the fourth quarter, derived by subtracting three reviewed quarters from an audited year, is where adjustments most often surface.
This is the mechanism behind the pattern of a company reporting three unremarkable quarters and a fourth that contains every charge. The fourth quarter is the one the auditor examines.
The comparison the filing makes, and the one it does not
A 10-Q compares the quarter against the same quarter a year earlier, and the year-to-date period against the same period a year earlier. It does not present a comparison against the immediately preceding quarter, which for many businesses is the more informative one.
The reason for the convention is seasonality. A retailer's fourth quarter compared against its third would show a collapse every year, and the year-over-year comparison removes that. The cost is that a genuine sequential deterioration is invisible in the presented figures and has to be constructed by pulling the previous filing.
| Comparison | Strength | Weakness |
|---|---|---|
| Year over year | Removes seasonality | Slow to reveal a turn, and compares against a base a year old |
| Sequential | Detects a change quickly | Confounded by seasonality in most businesses |
| Trailing twelve months | Smooth, and comparable across companies with different year ends | Slowest of the three to reflect anything |
For a business without meaningful seasonality, the sequential comparison is usually the one that matters and the one nobody presents. Building it takes two filings and is where a good deal of what a quarterly report contains is actually found.