A 10-K diff is a paragraph-level comparison of a company's most recent SEC Form 10-K annual report against the prior year's 10-K, showing every new, removed and edited sentence in sections like Risk Factors, MD&A, Legal Proceedings and Cybersecurity.

Why compare two years of 10-K filings?

Management rewrites specific paragraphs when risks change, strategy shifts, or new disclosures are required. Reading a year-over-year diff surfaces those deliberate edits — often a faster signal than reading both filings end-to-end.

Where does the source data come from?

Every diff is computed from the official 10-K / 20-F annual report filed with the SEC EDGAR system. 10q10k.net caches the raw filings, parses sections by Item heading (Item 1, 1A, 1C, 2, 3, 7, 7A), and renders a side-by-side diff.

10-K Year-over-Year Diff Hub

Paragraph-level diffs of every recent 10-K and 20-F annual report filed with the SEC. See exactly which Risk Factors, MD&A commentary, Cybersecurity disclosures and Legal Proceedings management rewrote between last year's filing and this year's — sourced directly from EDGAR.

Featured — mega-cap 10-K diffs

Latest available year-over-year comparisons for the largest US-listed companies.

Most recently filed 10-Ks

Companies whose latest annual filing is freshest — most likely to have meaningful YoY changes.

Browse 10-K diffs by sector

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How 10-K diffs work

Every US-listed company files a Form 10-K annual report with the SEC. The narrative sections — Item 1 Business, Item 1A Risk Factors, Item 1C Cybersecurity, Item 3 Legal Proceedings, Item 7 Management's Discussion & Analysis, Item 7A Market Risk — are where management describes what's changed since last year.

10q10k.net parses each filing, aligns paragraphs across the two years by textual similarity, and renders a GitHub-style side-by-side diff with word-level red/green highlights. That turns a 200-page annual report into a short list of the specific sentences management rewrote.

Source: SEC EDGAR. No paywall, no account required. Every diff URL is permanent and indexable — the structure matches /{TICKER}/diff/{older}-vs-{newer}.