Tien Bor-Zen (CIK 2114023) reported 13 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-30). Recent activity: Buy TSM (1,000 shares), Buy TSM (1,000 shares), Buy TSM (43 shares), Buy TSM (7 shares), Buy TSM (10 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-30 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 1,000 | $0 |
| 2026-06-30 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 1,000 | $0 |
| 2026-06-09 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 43 | $0 |
| 2026-06-09 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 7 | $0 |
| 2026-05-21 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 10 | $3,918 |
| 2026-05-21 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 7 | $2,800 |
| 2026-05-19 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 1,000 | $0 |
| 2026-05-19 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 1,000 | $0 |
| 2026-05-11 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 44 | $0 |
| 2026-05-11 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 7 | $0 |
| 2026-04-13 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 53 | $0 |
| 2026-04-13 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 9 | $0 |
| 2026-03-24 | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) | VP | Buy | 1,000 | $0 |
Source: SEC Form 4 filings · as of 2026-06-30