SEC form types explained
What 10-K, 10-Q, 8-K, Form 4, 13F, and other common SEC filings mean
SEC API guides
Company identity and filings. API access is not open yet
10-K, 10-Q and 8-K API guide
How annual, quarterly, and material-event SEC filings differ in an API
SEC Form 4 filings API
How to find Form 4 and 4/A filing metadata without calling it transaction data
CIK vs ticker for SEC filings
When to use a CIK, ticker, or stable company ID for SEC filing history