Annual reports for US companies

A 10-K filing is a comprehensive report filed annually by a U.S. publicly-traded company about its financial performance and is required by the U.S. Securities. The 10-K includes qualitative information such as company Business Description (Item 1), description of Risk Factors (Item 1A), Management's Discussion and Analysis of Financial Condition and Results of Operations (Item 7), among other financial information. Academically, 10-K filings and especially textual Items 1, 1A, and 7 have been subject to extensive research (https://doi.org/10.1111/1475-679X.12123).
The original data source is SEC Edgar database. The enhanced data source provided on Data Hub by the author contains 10-K Items 1, 1A, and 7 from January 2003 to April 2022, covering fiscal years 2002-2021, with approximately 6,500 filings per year. Each observation include item textual content, number of words, filing year, CIK stock code, metadata (filing form and item code), and a search score in case the user wants to use full-text search capabilitities of Azure Cognitive Search. Note that CIK stock codes are compatible with Compustat and CRSP databases in WRDS.