Archived edition · SEC Form 4
Insider buying — week of September 16, 2026
Filings as of Sep 16, 2026 · frozen, never updated · current reading
- Net buyers
- 39
- Clusters
- 15
- Tracked
- 403
Participation was mixed. 39 of 403 tracked companies finished the window net buyers of their own shares (10%); the rest were flat or net sellers.
TSM is the story: 30 separate insiders there filed open-market purchases in this window, which is a company-wide pattern rather than one executive acting alone. 14 other companies in this edition also drew more than one buyer.
No single name dominates the dollar total — the largest, BABA, is 24% of the net open-market buying across the 10 names below.
More separate purchases were filed at ACDC than at any other name here — 10 of them.
The individual purchases listed below were filed between Sep 7, 2026 and Sep 14, 2026, across 5 companies.
Companies with more than one insider buying
“Buyers” counts separate insiders who filed an open-market purchase (Form 4 code P) at that company in the window. The dollar figure is net of open-market sales by insiders at the same company, so it can be negative even where several people bought. The officer/director tag means at least one buyer filed a role other than 10% owner or an unspecified “insider”; untagged means no such role was filed, not that the buyers were anything in particular.
Largest net open-market buying this edition
Net value = open-market buys minus sells as disclosed on Form 4 (code P). Grants/options/withholding excluded.
Who filed, and when
Open-market purchases (Form 4 code P) only — grants, option exercises and tax withholding are excluded. Share counts are as disclosed in the filing.
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SEC Form 4 · public domainInsider buying, week of September 16, 2026: 30 insiders at $TSM bought their own shares ($1,302,205 net), per SEC Form 4. Edition:
Educational, not financial advice. Figures are as disclosed in public SEC EDGAR Form 4 filings.
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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.