Tien Bor-Zen 4

4 · TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD · Filed May 11, 2026

AI-generated summary of this filing

Updated May 11, 2026

Taiwan Semiconductor (TSM) VP Tien Bor-Zen Buys Stock

What Happened

Tien Bor‑Zen, a Vice President at Taiwan Semiconductor Manufacturing Co. (TSM), made open‑market purchases on 2026‑05‑08: 44 ADS at $71.82 each ($3,160) and 7 ADS at $71.82 each ($503), for a total of 51 ADS costing ~$3,663. These are purchases (acquisitions), which are typically viewed as more informative than routine sales.

Key Details

Transaction date: 2026‑05‑08; Filing date: 2026‑05‑11 (file appears to be timely).
Prices: $71.82 per share for both lots; totals $3,160 and $503 respectively, combined ~$3,663.
Shares acquired: 51 ADS in total.
ADS conversion: Footnote F1 — each American Depositary Share (ADS) represents five (5) common shares; 51 ADS = 255 common shares.
Footnote F3: the reported dollar price was translated from NT$2,257.1777 at NT$31.429 = US$1.
Shares owned after the transaction are not disclosed in the provided data.
Other footnotes in the filing reference ESPP mechanics (F2, F4, F5) but the reported transactions here are open‑market purchases.

Context

These were straightforward open‑market purchases (transaction code P). The dollar amount is small relative to typical insider transactions for large-cap issuers, so this indicates a personal purchase but not a large-scale stake change. No options exercise, gift, or special 10b5‑1 plan is indicated in the provided details.

Form 4

Period: 2026-05-08

Transactions

Purchase
Common Shares (2330.TW)
[F2][F3][F4]
2026-05-08$71.82/sh+44$3,160→ 145 total(indirect: By Trust)
Purchase
Common Shares (2330.TW)
[F5][F3]
2026-05-08$71.82/sh+7$503→ 60 total(indirect: By Immediate Family Member)

Holdings

Footnotes (5)

[F1]Each American Depositary Share represents five (5) Common Shares.
[F2]Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer pursuant to terms predetermined by the issuer.
[F3]The price was translated from the average purchase price of NT$2,257.1777 in New Taiwan dollars, at the rate of NT$31.429 to US$1.
[F4]Common Shares purchased and held under the issuer's Employee Stock Purchase Plan ("ESPP").
[F5]Common Shares purchased by the administrator of the issuer's Employee Stock Purchase Plan ("ESPP") on behalf of the filer's Immediate Family Member, who is a TSMC employee, pursuant to terms predetermined by the issuer.

Signature

/s/ Jen-Chau Huang, as attorney-in-fact|2026-05-11

1 file