Chuang Tzu-Sou 4

What Happened
Chuang Tzu-Sou, a Vice President at Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC/TSM), purchased 48 common shares on 2026-05-08 for an aggregate $3,447 (average price $71.82 per share). The shares were acquired through the issuer's Employee Stock Purchase Plan (ESPP) rather than a direct open-market trade—this is a purchase (a routine insider buy through a company plan).

Key Details

• Transaction date and type: 2026-05-08 — Purchase (Code: P) via ESPP.
• Price: $71.82 per share (translated from NT$2,257.1777 at NT$31.429 = US$1), total value $3,447. (Footnote F2)
• How acquired/held: Shares purchased by the ESPP administrator on the filer’s behalf and held under the ESPP. (Footnotes F1, F3)
• Shares owned after transaction: Not specified in the filing.
• Filing timeliness: Report filed 2026-05-11 for a 2026-05-08 transaction — filed within the SEC’s two-business-day window (timely).

Context
ESPP purchases are common, payroll-driven purchases made under plan terms (often at predetermined intervals or discounts) and do not necessarily indicate ad hoc trading decisions. This filing documents a small-dollar, plan-based purchase rather than a large discretionary insider buy.