TSMC VP Bor-Zen Tien Acquires Shares via Routine ESPP

Executive Summary

On October 8, 2026, Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC) filed a Form 4 disclosing purchases of Common Shares by Vice President Bor-Zen Tien on October 7, 2026. The purchases were executed under the company's Employee Stock Purchase Plan (ESPP).

Transaction Breakdown

• Primary Purchase: 40 Common Shares acquired at an equivalent price of $79.39 per share (converted from NT$2,524.2277 at an exchange rate of NT$31.795 to US$1), totaling $3,175.60, held indirectly via the ESPP Trust.
• Family Member Purchase: 7 Common Shares acquired at the same price of $79.39 per share ($555.73) held indirectly by an immediate family member who is also a TSMC employee.

Ownership Context

Following these transactions, Bor-Zen Tien's holdings include:

• Direct Ownership: 14,051 Common Shares and 132 American Depositary Shares (ADS, where 1 ADS = 5 Common Shares).
• Indirect Ownership: 353 Common Shares held via ESPP Trust, 5,000 Common Shares held by spouse, and 92 Common Shares held by an immediate family member.

Significance

This filing reflects routine, scheduled programmatic purchases under TSMC's corporate ESPP. Because the volume is minimal (~$3,731 combined) and non-discretionary, it carries low market significance and does not reflect a change in executive sentiment.