Taiwan Semiconductor Manufacturing TSM Insider Ownership

Updated Nov 13, 2026

Across the past 12 months, open-market trades by Taiwan Semiconductor Manufacturing insiders totaled $3.18 million in purchases and $13.97 million in sales.

• Counted by insider, open-market buying of TSM stock in the past 12 months came from 33 insiders and selling from 2 insiders.
• Among Taiwan Semiconductor Manufacturing insiders, Bor-Zen Tien (VP) led open-market buying over the past 12 months with $759,150 of purchases; the latest was on October 7, 2026.
• Meanwhile, the largest open-market sales of TSM in the past 12 months were by Tzu-Sou Chuang (VP), totaling $13.97 million, most recently on May 19, 2026.
• The latest open-market trade on record is a purchase for $299,880 by Michael R. Splinter (Director) on November 5, 2026.
• Institutional holders reported 2.95% of Taiwan Semiconductor Manufacturing's outstanding shares for Q2 2026.
• In the last 12 months, 256 Form 4 filings with transactions in TSM stock came from 34 insiders.
• The insider data for TSM reflects Form 4 filings through November 9, 2026.