Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Tien Bor-zen
Over the trailing 90 days, Tien Bor-zen (Other Officer at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD) bought $685K of stock in TSM, per 20 SEC Form 4 transactions.
- Role
- Other Officer
- Companies
- TSM
- Window
- Trailing 90 days · 20 transactions · CIK 2114023
- Net activity
- +$685K ($685K bought · $0 sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | 20 | $685K | — | $685K |
Transactions (20)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-28 | TSM | Buy | 5 | $2K | Open market or private purchase |
| 2026-07-28 | TSM | Buy | 1.0K | $68K | Open market or private purchase |
| 2026-07-28 | TSM | Buy | 10 | $4K | Open market or private purchase |
| 2026-07-21 | TSM | Buy | 1.0K | $74K | Open market or private purchase |
| 2026-07-21 | TSM | Buy | 1.0K | $74K | Open market or private purchase |
| 2026-07-21 | TSM | Buy | 1.0K | $75K | Open market or private purchase |
| 2026-07-21 | TSM | Buy | 1.0K | $74K | Open market or private purchase |
| 2026-07-20 | TSM | Buy | 10 | $4K | Open market or private purchase |
| 2026-07-07 | TSM | Buy | 40 | $3K | Open market or private purchase |
| 2026-07-07 | TSM | Buy | 6 | $460 | Open market or private purchase |
| 2026-06-30 | TSM | Buy | 1.0K | $76K | Open market or private purchase |
| 2026-06-29 | TSM | Buy | 1.0K | $77K | Open market or private purchase |
| 2026-06-05 | TSM | Buy | 7 | $532 | Open market or private purchase |
| 2026-06-05 | TSM | Buy | 43 | $3K | Open market or private purchase |
| 2026-05-20 | TSM | Buy | 7 | $3K | Open market or private purchase |
| 2026-05-19 | TSM | Buy | 10 | $4K | Open market or private purchase |
| 2026-05-19 | TSM | Buy | 1.0K | $70K | Open market or private purchase |
| 2026-05-19 | TSM | Buy | 1.0K | $70K | Open market or private purchase |
| 2026-05-08 | TSM | Buy | 7 | $503 | Open market or private purchase |
| 2026-05-08 | TSM | Buy | 44 | $3K | Open market or private purchase |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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