Chuang Tzu-Sou — SEC Form 4 filings
SEC reporting owner CIK 2114030. 9 Form 4 filings on record with FilingPulse; latest filed 2026-09-09.
Transaction summary — filings shown
Covers all 9 filings on record, filed 2026-04-13 to 2026-09-09. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 6 legs across 6 filings — 291 shares, $20,775 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 1 leg across 1 filing — 200,000 shares, $13,966,000 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 3.
- Largest priced transaction: sale of 200,000 shares @ $69.83 ($13,966,000) in TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD, filed 2026-05-19.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | 9 | 6 legs · 291 sh · $20,775 | 1 leg · 200,000 sh · $13,966,000 | 3 |
Form 4 filings — Chuang Tzu-Sou
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 47 @ $76.20 | EDGAR |
| 2026-09-02 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Grant/award (A): 8,175 @ $0 | EDGAR |
| 2026-08-10 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 47 @ $73.31 | EDGAR |
| 2026-07-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 45 @ $76.62 | EDGAR |
| 2026-06-24 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Gift (G): 500,000 @ $0 | EDGAR |
| 2026-06-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Gift (G): 500,000 @ $0 · Purchase (P): 46 @ $76.01 | EDGAR |
| 2026-05-19 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Sale (S): 200,000 @ $69.83 | EDGAR |
| 2026-05-11 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 48 @ $71.82 | EDGAR |
| 2026-04-13 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 58 @ $57.87 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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