Under Section 16(a) of the Securities Exchange Act of 1934, corporate insiders must file Form 4 within two business days following transaction execution. Data reflects official EDGAR filings aggregated across the Vantage universe. Open-market transactions are distinguished from derivative exercises and pre-scheduled Rule 10b5-1 executive trading plans. Historical insider flows are provided for quantitative research and educational context, and do not constitute investment advice or a recommendation to buy or sell any security.