What Is a 10-K Filing? Everything You Need to Know

What Is a 10-K Filing? Everything You Need to Know

A 10-K is a comprehensive annual report that every publicly traded company in the United States is legally required to file with the Securities and Exchange Commission (SEC). It contains the company's audited financial statements, management's analysis of results, and disclosures about risk, competitive position, and business strategy. The 10-K is the primary document for serious company research — and it is available for free.

Why Is It Called a 10-K?

The name "10-K" comes from the SEC form designation — Form 10-K. The naming reflects the SEC's system of categorizing required filings by form number. There is no deeper meaning to the "10" or the "K" — it is simply an administrative code that has been used since the form was first established in the 1930s under the Securities Exchange Act of 1934.

Who Must File a 10-K?

Any company that has registered securities with the SEC (typically, any company whose stock is listed on a US stock exchange like the NYSE or Nasdaq) must file a 10-K annually. This includes companies with more than $10 million in assets and more than 2,000 shareholders (or 500 non-accredited shareholders) even if they are not exchange-listed.

Smaller companies have variations: companies with public float below $75M may file a Form 10-KSB (small business version). Foreign private issuers — non-US companies listed in the US — file a Form 20-F instead of a 10-K, which covers similar information under a different format.

What Is in a 10-K?

The 10-K is divided into four parts with standardized items:

Part I

• Item 1 — Business: Overview of what the company does, its products and services, segments, markets, customers, and competitive environment
• Item 1A — Risk Factors: All material risks that could adversely affect the business — legally required to be complete and accurate
• Item 1B — Unresolved Staff Comments: SEC review comments not yet resolved
• Item 2 — Properties: Description of material properties (facilities, real estate) owned or leased
• Item 3 — Legal Proceedings: Material pending legal cases
• Item 4 — Mine Safety Disclosures: Required for mining companies

Part II

• Item 5 — Market for Registrant's Common Equity: Stock price and dividend information
• Item 6 — Selected Financial Data: (For larger companies) multi-year summary
• Item 7 — MD&A (Management's Discussion and Analysis): Management's narrative explanation of financial results, trends, and outlook
• Item 7A — Quantitative and Qualitative Disclosures About Market Risk: Exposure to interest rates, foreign exchange, commodity prices
• Item 8 — Financial Statements and Supplementary Data: The complete audited financial statements and notes
• Item 9 — Changes in and Disagreements with Accountants: Auditor changes
• Item 9A — Controls and Procedures: Management's assessment of internal controls (Sarbanes-Oxley requirement)

Part III

• Item 10 — Directors and Officers
• Item 11 — Executive Compensation: Full pay disclosures for the CEO, CFO, and top earners
• Item 12 — Security Ownership: Major shareholders and insider holdings
• Item 13 — Certain Relationships and Related Transactions: Conflicts of interest disclosures

Part IV

• Item 15 — Exhibits: Material contracts, subsidiary lists, certifications

When Is a 10-K Due?

Filing deadlines depend on the company's size:

• Large accelerated filers (public float over $700M): 60 days after fiscal year end
• Accelerated filers (public float $75M–$700M): 75 days after fiscal year end
• Non-accelerated filers and smaller reporting companies: 90 days after fiscal year end

Most large US public companies have a fiscal year ending December 31, meaning their 10-Ks are due by late February or early March. Companies with non-calendar fiscal years (Apple ends September, Walmart ends January, Nike ends May) file accordingly.

How Is a 10-K Different from an Annual Report to Shareholders?

The annual report that companies mail to shareholders (or post on their investor relations pages with glossy design, photographs, and a CEO letter) is a different document than the 10-K. The shareholder annual report is a marketing and communication document — it is not regulated in its content beyond basic accuracy requirements. The 10-K is a regulatory filing with standardized format and legally audited financial content.

Many companies file their 10-K with the SEC and also publish a combined document that integrates the 10-K with the shareholder letter and branded design. In this case, the financial statements and risk disclosures within it still carry SEC-filing status. But a standalone annual report letter from a CEO is not the same as a 10-K.

Where to Find 10-K Filings

The SEC's EDGAR database (sec.gov/edgar) is the definitive free source. Search by company name or CIK number, filter by filing type "10-K," and access the full filing text and exhibits. Most companies also link to their 10-K from their investor relations pages under "SEC Filings" or "Annual Reports."

Financial data aggregators like Stock Analysis, Macrotrends, and TIKR extract the structured financial data from 10-K filings into formatted tables, making it easier to compare numbers across years or companies — but always trace important figures back to the source 10-K for accuracy.

Summary

A 10-K is a mandatory annual SEC filing from every US public company containing audited financial statements, management's analysis, and full risk disclosures. It is divided into four parts covering business description, financial results, executive information, and exhibits. Large companies must file within 60 days of fiscal year end. All 10-K filings are free on SEC EDGAR. It is the single most important document for understanding a public company's financial position and business strategy.