Tien Bor-Zen — SEC Form 4 filings
SEC reporting owner CIK 2114023. 15 Form 4 filings on record with FilingPulse; latest filed 2026-09-09.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2026-03-24 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): 31 legs across 14 filings — 11,368 shares, $832,614 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 1.
- Largest priced transaction: purchase of 1,000 shares @ $76.64 ($76,640) in TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD, filed 2026-06-30.
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 | 15 | 31 legs · 11,368 sh · $832,614 | — | 1 |
Form 4 filings — Tien Bor-Zen
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 43 @ $76.20 · Purchase (P): 5 @ $76.20 | EDGAR |
| 2026-08-10 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 42 @ $73.31 · Purchase (P): 7 @ $73.31 | EDGAR |
| 2026-08-04 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 1,000 @ $73.06 | EDGAR |
| 2026-07-30 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 10 @ $390 · Purchase (P): 5 @ $390 · Purchase (P): 1,000 @ $67.97 | EDGAR |
| 2026-07-23 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 1,000 @ $74.13 · Purchase (P): 10 @ $405 · Purchase (P): 1,000 @ $73.98 · Purchase (P): 1,000 @ $74.44 · Purchase (P): 1,000 @ $74.75 | EDGAR |
| 2026-07-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 40 @ $76.62 · Purchase (P): 6 @ $76.62 | EDGAR |
| 2026-06-30 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 1,000 @ $76.64 · Purchase (P): 1,000 @ $75.70 | EDGAR |
| 2026-06-09 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 43 @ $76.01 · Purchase (P): 7 @ $76.01 | EDGAR |
| 2026-05-21 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 10 @ $391.81 · Purchase (P): 7 @ $400 | EDGAR |
| 2026-05-19 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 1,000 @ $69.98 · Purchase (P): 1,000 @ $69.83 | EDGAR |
| 2026-05-11 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 44 @ $71.82 · Purchase (P): 7 @ $71.82 | EDGAR |
| 2026-04-29 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 10 @ $386 · Purchase (P): 5 @ $390 · Purchase (P): 5 @ $390 | EDGAR |
| 2026-04-24 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Code (H): 20,000 (derivative) | EDGAR |
| 2026-04-13 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 53 @ $57.87 · Purchase (P): 9 @ $57.87 | EDGAR |
| 2026-03-24 | 4 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | Purchase (P): 1,000 @ $55.93 | 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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