Newest
PEBO ▼ sold $76K · Augenstein Mark filed 1d agoBBT ▲ bought $105K · Hollister Thomas J filed 2d agoBBT ▼ sold $20K · Eagan John Buckley filed 2d agoGS ▼ sold $60K · LESLIE ERICKA T filed 2d agoGS ▼ sold $163K · LESLIE ERICKA T filed 2d agoMSCI ▼ sold $1.5M · Gutowski Robert J. filed 2d agoGL ▼ sold $2.2M · MAJORS MICHAEL CLAY filed 2d agoPHR ▲ bought $362 · Linetsky David filed 2d agoPHR ▲ bought $320 · Linetsky David filed 2d agoRVI ▲ bought $23K · Whitney Meredith filed 2d agoLEO ▲ bought $369K · Saba Capital Management, L.P. filed 2d agoPG ▼ sold $5.7M · Jejurikar Shailesh filed 2d agoICLR ▼ sold $10K · Lyons Emer filed 2d agoICLR ▼ sold $10K · Lyons Emer filed 2d agoICLR ▼ sold $8K · Lyons Emer filed 2d agoICLR ▼ sold $15K · Lyons Emer filed 2d agoICLR ▼ sold $8K · Lyons Emer filed 2d agoPG ▼ sold $698K · Gama Paul filed 2d ago

Insider / TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

Tien Bor-Zen

VP at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

Company
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
Ticker
TSM
First filing on record
March 24, 2026
Latest trade on record
October 7, 2026
SEC filings
EDGAR ↗

Tien Bor-Zen, VP at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD, has disclosed 34 transactions in TSM since March 24, 2026: 33 purchases (33 open-market buys) and 0 sales, worth about $836K at the reported prices. The latest was filed October 8, 2026, 1 day after the trade.

Last updated October 8, 2026 · Source: SEC EDGAR Form 4 filings

Transactions
34
Open-market buys
33
Sales
0
Avg. disclosure lag
1.9d

Trading in charts

Trade timeline

When does this person trade, how big, and in which direction? Every trade in the last 12 months.

Bought (above the line)Sold (below the line)Other transaction
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep

In the last 12 months Tien Bor-Zen made 33 purchases worth $836K and no sales, plus 1 other transaction. Dot size is the dollar amount.

Portfolio mix

Which stocks does this person trade most? Tile size is dollars traded, all time on record.

TSM$836K
TSM$836K

Tien Bor-Zen has traded 1 stock on record; the largest by dollars is TSM.

Reporting lag

Does this person report on time? One bar per filing against the Form 4 deadline.

On timeLate
Form 4 deadlineoldest filingnewest

0 of 16 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).

What kind of transactions

Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.

Rows by Form 4 transaction code
CodeMeaningRowsSharesValue
POpen-market purchase3311,415$836K
HExpiry of a long derivative120,000—
Rows by year of the trade
YearRowsBoughtSold
20263433 · $836K0

Transactions

Download TSM trades (CSV)290 rows · 103 KB · every filer in this ticker, this insider included · all downloads

SecuritySideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
TSMBuy POctober 7, 2026October 8, 20261d7$79$556indirectForm 4 ↗
TSMBuy POctober 7, 2026October 8, 20261d40$79$3,176indirectForm 4 ↗
TSMBuy PSeptember 7, 2026September 9, 20262d5$76$381indirectForm 4 ↗
TSMBuy PSeptember 7, 2026September 9, 20262d43$76$3,277indirectForm 4 ↗
TSMBuy PAugust 7, 2026August 10, 20263d7$73$513indirectForm 4 ↗
TSMBuy PAugust 7, 2026August 10, 20263d42$73$3,079indirectForm 4 ↗
TSMBuy PAugust 3, 2026August 4, 20261d1,000$73$73KForm 4 ↗
TSMBuy PJuly 28, 2026July 30, 20262d1,000$68$68KindirectForm 4 ↗
TSMBuy PJuly 28, 2026July 30, 20262d5$390$1,950Form 4 ↗
TSMBuy PJuly 28, 2026July 30, 20262d10$390$3,900Form 4 ↗
TSMBuy PJuly 21, 2026July 23, 20262d1,000$75$75KindirectForm 4 ↗
TSMBuy PJuly 21, 2026July 23, 20262d1,000$74$74KindirectForm 4 ↗
TSMBuy PJuly 21, 2026July 23, 20262d1,000$74$74KindirectForm 4 ↗
TSMBuy PJuly 20, 2026July 23, 20263d10$405$4,050Form 4 ↗
TSMBuy PJuly 21, 2026July 23, 20262d1,000$74$74KForm 4 ↗
TSMBuy PJuly 7, 2026July 9, 20262d6$77$460indirectForm 4 ↗
TSMBuy PJuly 7, 2026July 9, 20262d40$77$3,065indirectForm 4 ↗
TSMBuy PJune 30, 2026June 30, 20260d1,000$76$76KindirectForm 4 ↗
TSMBuy PJune 29, 2026June 30, 20261d1,000$77$77KForm 4 ↗
TSMBuy PJune 5, 2026June 9, 20264d7$76$532indirectForm 4 ↗
TSMBuy PJune 5, 2026June 9, 20264d43$76$3,268indirectForm 4 ↗
TSMBuy PMay 20, 2026May 21, 20261d7$400$2,800Form 4 ↗
TSMBuy PMay 19, 2026May 21, 20262d10$392$3,918Form 4 ↗
TSMBuy PMay 19, 2026May 19, 20260d1,000$70$70KForm 4 ↗
TSMBuy PMay 19, 2026May 19, 20260d1,000$70$70KForm 4 ↗
TSMBuy PMay 8, 2026May 11, 20263d7$72$503indirectForm 4 ↗
TSMBuy PMay 8, 2026May 11, 20263d44$72$3,160indirectForm 4 ↗
TSMBuy PApril 28, 2026April 29, 20261d5$390$1,950Form 4 ↗
TSMBuy PApril 28, 2026April 29, 20261d5$390$1,950Form 4 ↗
TSMBuy PApril 28, 2026April 29, 20261d10$386$3,860Form 4 ↗
TSMOther HApril 24, 2026April 24, 20260d20,000——derivativeForm 4 ↗
TSMBuy PApril 9, 2026April 13, 20264d9$58$521indirectForm 4 ↗
TSMBuy PApril 9, 2026April 13, 20264d53$58$3,067indirectForm 4 ↗
TSMBuy PMarch 22, 2026March 24, 20262d1,000$56$56KForm 4 ↗

Filings

FiledFormAccessionRowsStatusSource
October 8, 2026Form 40001046179-26-0007082publishedEDGAR ↗
September 9, 2026Form 40001046179-26-0006432publishedEDGAR ↗
August 10, 2026Form 40001046179-26-0005192publishedEDGAR ↗
August 4, 2026Form 40001046179-26-0004651publishedEDGAR ↗
July 30, 2026Form 40001046179-26-0004613publishedEDGAR ↗
July 23, 2026Form 40001046179-26-0004575publishedEDGAR ↗
July 9, 2026Form 40001046179-26-0004352publishedEDGAR ↗
June 30, 2026Form 40001046179-26-0003792publishedEDGAR ↗
June 9, 2026Form 40001046179-26-0003562publishedEDGAR ↗
May 21, 2026Form 40001046179-26-0002882publishedEDGAR ↗
May 19, 2026Form 40001046179-26-0002852publishedEDGAR ↗
May 11, 2026Form 40001046179-26-0002632publishedEDGAR ↗
April 29, 2026Form 40001046179-26-0002093publishedEDGAR ↗
April 24, 2026Form 40001046179-26-0002071publishedEDGAR ↗
April 13, 2026Form 40001046179-26-0001912publishedEDGAR ↗
March 24, 2026Form 40001046179-26-0001221publishedEDGAR ↗

Other insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

Everyone on file, with contracts and lobbying under the company's name: TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD.

Guides for this page

Sources and method

Official sources behind this page
SourceFilingsRowsFirst filedNewest filedRead the originals
SEC EDGAR, Form 41634March 24, 2026October 8, 2026Form 4 list on EDGAR

Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.

Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.

Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.