Tien Bor-Zen Insider Trading -- Recent SEC Form 4 Transactions
Tien Bor-Zen (CIK 2114023) reported 33 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-10-08). Recent activity: Buy TSM (40 shares), Buy TSM (7 shares), Buy TSM (43 shares), Buy TSM (5 shares), Buy TSM (42 shares). Source: SEC Form 4.
Source: SEC Form 4 filings · as of 2026-10-08