The US Equity OTC Corporate Actions dataset provides comprehensive corporate action event data for U.S. Over-the-Counter (OTC) securities sourced from FINRA’s OTC Equities Daily List feed. It includes security additions, changes, deletions, dividend additions, dividend changes, and dividend cancellations. The dataset supports accurate historical price adjustment for events such as dividends and splits, and enables tracking of symbol and issuer name changes over time. Additional security-level attributes include financial status, round lot quantity, market category, OATS reportability, and regulatory fee status.