Insider activity · SEC Form 4 · as of October 20, 2026
Recent insider buying
Who’s buying their own stock, from public SEC Form 4 filings over the trailing 90 days. Insiders sell for many reasons and buy for fewer — but a purchase is a disclosure, not a prediction. Everything here describes filing activity; none of it is a rating or a buy signal.
Notable cluster
TSM Taiwan Semiconductor
30 insiders bought — $683,122 net, including a company officer. See all clusters →
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SEC Form 4 · public domainInsider cluster: 30 insiders at $TSM bought their own shares ($683,122 net) in SEC Form 4 filings over the trailing 90 days. Full breakdown:
Educational, not financial advice. Figures are as disclosed in public SEC EDGAR Form 4 filings.
Recent open-market buys
Open-market purchases (Form 4 code P) only — grants, option exercises and tax withholding are excluded. Prices/shares are as disclosed in the filing.
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All figures from public SEC EDGAR Form 4 filings.
This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.