What is the difference between a bank's 10-K and 10-Q filing?

A 10-K is a bank's annual report filed with the SEC, with fully audited financials and extensive disclosures covering the full year. A 10-Q is the shorter quarterly version, filed three times per year, with reviewed (not audited) financials and condensed detail. The 10-K goes deeper while the 10-Q tracks recent changes.

Every publicly traded bank files regular financial reports with the Securities and Exchange Commission (SEC). The two most important are the 10-K, filed once a year, and the 10-Q, filed after each of the first three quarters. The fourth quarter is covered by the annual 10-K, so investors receive four total filings per year: three quarterly 10-Qs and one annual 10-K.

The core differences come down to frequency, depth of disclosure, and audit level.

Filing Deadlines

The 10-K covers the full fiscal year. Large accelerated filers (banks with a public float above $700 million) must file within 60 days of year-end, while smaller reporting companies get up to 90 days. The 10-Q is due within 40 days of each quarter-end for large accelerated filers. Most sizable banks file well before these deadlines since they release an earnings press release weeks earlier.

Audited vs. Reviewed Financials

This is one of the more meaningful differences between the two filings. An independent accounting firm fully audits the financial statements in the 10-K and issues a formal opinion on whether they fairly represent the bank's financial position. The 10-Q financials receive a review instead, which provides some assurance but not the same rigor as a full audit.

The practical implication: when something looks unusual in the quarterly numbers, investors often wait for the audited annual figures to confirm whether it reflects a real trend or a one-quarter anomaly.

What the 10-K Includes That the 10-Q Does Not

Both filings contain financial statements and a management's discussion and analysis (MD&A) section where executives explain what happened during the period. But the 10-K goes considerably deeper in several areas that matter for bank analysis:

Full financial statement footnotes covering accounting policies, loan portfolio composition, investment securities detail, and fair value measurements

Loan portfolio breakdowns by type, geography, maturity, and credit quality, often spanning dozens of pages in a bank 10-K

Interest rate sensitivity disclosures, including repricing schedules showing how net interest income would shift under different rate scenarios

A comprehensive business description covering the bank's markets, competitive position, and regulatory environment

An extensive risk factors section identifying specific threats to the bank's operations and financial condition

Deposit composition detail showing the mix of demand, savings, money market, and time deposits, along with maturity schedules for certificates of deposit

The 10-Q provides condensed financial statements, a shorter MD&A focused on changes since last quarter and the year-ago period, and updates to risk factors and legal proceedings. Less detail, but more timely.

How Bank Investors Use Each Filing

The 10-K is the place for deep due diligence. Loan portfolio tables, credit quality trends, interest rate sensitivity, and deposit franchise analysis all get their fullest treatment in the annual filing. If you are evaluating a bank for the first time, the most recent 10-K is the natural starting point.

The 10-Q is for monitoring. Quarter-to-quarter shifts in asset quality, deposit cost trends, margin movement, and changes in the provision for credit losses all show up in the quarterly data. Reading the MD&A section is particularly worthwhile because management explains what drove the quarter's results and often provides context on where the bank is headed.

Press Releases vs. SEC Filings

Banks issue an earnings press release before filing the 10-Q or 10-K, typically on the day they report quarterly results. The press release summarizes key financial highlights and performance metrics, and it drives the immediate stock price reaction. But a press release is not an SEC filing. It omits the footnotes, supplemental schedules, and granular disclosures found in the 10-Q or 10-K. Treat the press release as the summary and the SEC filing as the complete record.

Call Reports as a Supplement

Banks also file quarterly call reports with federal banking regulators (the FFIEC), separate from their SEC filings. Call reports contain granular regulatory data that sometimes goes beyond what appears in a 10-K or 10-Q, particularly around loan concentrations, detailed capital ratios, and income and expense breakdowns. This data is publicly available and can be especially useful when analyzing smaller community banks that may provide less voluntary disclosure in their SEC filings.