SEC and Regulatory Filings
10-K
A detailed annual report public companies file with the SEC.
Also called: annual filing, SEC annual report
What it means
A 10-K is a formal annual filing that public companies submit to the U.S. Securities and Exchange Commission. It usually includes the business description, risks, financial statements, management discussion, and other important details that go beyond a simple marketing-style annual report.
Why it matters
If someone wants to understand a public company in depth, the 10-K is one of the most important documents to review.

