TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM)

Data as of Oct 8, 2026, from SEC Form 4 filings.

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Lipen Yuan - Officer
Open-market purchase$3K
Oct 7, 2026

About TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM)

Taiwan Semiconductor Manufacturing Co. is the world's largest dedicated chip foundry, with about 70% market share in 2025. TSMC was founded in 1987 as a joint venture of Philips, the government of Taiwan, and private investors. It went public in Taiwan in 1994 and as an ADR in the US in 1997. TSMC's scale and high-quality technology allow the firm to generate solid operating margins, even in the highly competitive foundry business. Furthermore, the shift to the fabless business model has created tailwinds for TSMC. The foundry leader has an illustrious base of customers, including Apple, AMD, and Nvidia, that look to apply its cutting-edge process technologies to their semiconductor designs. TSMC employs more than 83,000 people.

Employees: 90,557
Listed: 1997
Exchange: XNYS
Sector: Information Technology

https://www.tsmc.com SEC filings for TSM on EDGAR

TSM Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market purchase	112	20,126	$1.50M
Grant or award	21	492,721
Bona-fide gift	2	10,000,000

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

TSM insider transactions (Form 4)

256 Form 4 filings on record, the earliest from Mar 24, 2026, newest first. Filing history page 1 of 3.

Date	Insider	Transaction	Security	Shares	Price	Value
Oct 7, 2026	Lipen Yuan - Officer	Open-market purchase	Common Shares (2330.TW)	40	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Choh Fei Yeap - Officer	Open-market purchase	Common Shares (2330.TW)	52	$79.39^{footnote F3}	$4K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Kevin Xiaoqiang Zhang - Officer	Open-market purchase	Common Shares (2330.TW)	59	$79.39^{footnote F3}	$5K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Chue-San Yoo - Officer	Open-market purchase	Common Shares (2330.TW)	50	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Shien-Yang Wu - Officer	Open-market purchase	Common Shares (2330.TW)	53	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Che-Chia Wei - Officer	Open-market purchase	Common Shares (2330.TW)	144	$79.39^{footnote F2}	$11K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yi-Huang Wu - Officer	Open-market purchase	Common Shares (2330.TW)	39	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Ying-Lang Wang - Officer	Open-market purchase	Common Shares (2330.TW)	52	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yuh-Jier Mii - Officer	Open-market purchase	Common Shares (2330.TW)	68	$79.39^{footnote F3}	$5K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Bor-Zen Tien - Officer	Open-market purchase	Common Shares (2330.TW)	40	$79.39^{footnote F3}	$3K
Oct 7, 2026	Bor-Zen Tien - Officer	Open-market purchase	Common Shares (2330.TW)	7	$79.39^{footnote F3}	$556
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Chin-Sheng Lu - Officer	Open-market purchase	Common Shares (2330.TW)	36	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Lee-Chung Lu - Officer	Open-market purchase	Common Shares (2330.TW)	49	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Shyue-Shyh Lin - Officer	Open-market purchase	Common Shares (2330.TW)	44	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Chris Horng-Dar Lin - Officer	Open-market purchase	Common Shares (2330.TW)	44	$79.39^{footnote F4}	$3K
Footnote F4 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Chun-Hsien Lee - Officer	Open-market purchase	Common Shares (2330.TW)	51	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yao-Ching Ku - Officer	Open-market purchase	Common Shares (2330.TW)	46	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yuan-Ko Hwang - Officer	Open-market purchase	Common Shares (2330.TW)	39	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Jen-Chau Huang - Officer	Open-market purchase	Common Shares (2330.TW)	28	$79.39^{footnote F2}	$2K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Syun-Ming Jang - Officer	Open-market purchase	Common Shares (2330.TW)	46	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yung-Chin Hou - Officer	Open-market purchase	Common Shares (2330.TW)	60	$79.39^{footnote F3}	$5K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Kuo-Chin Hsu - Officer	Open-market purchase	Common Shares (2330.TW)	52	$79.39^{footnote F3}	$4K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Jun He - Officer	Open-market purchase	Common Shares (2330.TW)	43	$79.39^{footnote F5}	$3K
Footnote F5 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Tzu-Sou Chuang - Officer	Open-market purchase	Common Shares (2330.TW)	46	$79.39^{footnote F3}	$4K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Min Cao - Officer	Open-market purchase	Common Shares (2330.TW)	51	$79.39^{footnote F2}	$4K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Yung-Pei Chin - Officer	Open-market purchase	Common Shares (2330.TW)	67	$79.39^{footnote F2}	$5K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Tzonz-Sheng Chang - Officer	Open-market purchase	Common Shares (2330.TW)	51	$79.39^{footnote F3}	$4K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Shu-Hua Fang - Officer	Open-market purchase	Common Shares (2330.TW)	53	$79.39^{footnote F3}	$4K
Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Juiping Chuang - Officer	Open-market purchase	Common Shares (2330.TW)	46	$79.39^{footnote F4}	$4K
Footnote F4 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Pei-Hung Chen - Officer	Open-market purchase	Common Shares (2330.TW)	43	$79.39^{footnote F2}	$3K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.
Oct 7, 2026	Chih-Ho Chen - Officer	Open-market purchase	Common Shares (2330.TW)	31	$79.39^{footnote F2}	$2K
Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Congress trades in TSM

All congress trades

Stock trades in TSM disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Gilbert Ray Cisneros, Jr.Democrat, CA-31	Purchase

TSM insider trading FAQ

What is the latest insider trade for TSM?

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) had 120 insider filings in the last 90 days, with the most recent on 2026-10-08. The full record for TSM runs to 256 Form 4 filings, the earliest from 2026-03-24. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying TSM stock?

112 insider purchases of TSM were filed in the last 90 days, totaling $1.50M.

How many insiders are selling TSM stock?

No insider sales of TSM were filed in the last 90 days. 2 sales are on record for this company.

Where can I see TSM SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects TSM Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Oct 8, 2026 - Lipen Yuan view on EDGAR
Oct 8, 2026 - Choh Fei Yeap view on EDGAR
Oct 8, 2026 - Kevin Xiaoqiang Zhang view on EDGAR
Oct 8, 2026 - Chue-San Yoo view on EDGAR
Oct 8, 2026 - Shien-Yang Wu view on EDGAR
Oct 8, 2026 - Che-Chia Wei view on EDGAR
Oct 8, 2026 - Yi-Huang Wu view on EDGAR
Oct 8, 2026 - Ying-Lang Wang view on EDGAR
Oct 8, 2026 - Yuh-Jier Mii view on EDGAR

Related companies with recent insider activity

Learn more

How to read insider buying signals: What an open-market purchase by an insider can and cannot tell you.
Insider activity in Information Technology: Where TSM's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market purchase

112

20,126

$1.50M

Grant or award

492,721

Bona-fide gift

10,000,000

Date

Insider

Transaction

Security

Price

Value

Oct 7, 2026

Lipen Yuan - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Choh Fei Yeap - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$4K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Kevin Xiaoqiang Zhang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$5K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Chue-San Yoo - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Shien-Yang Wu - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Che-Chia Wei - Officer

Open-market purchase

Common Shares (2330.TW)

144

$79.39^{footnote F2}

$11K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yi-Huang Wu - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Ying-Lang Wang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yuh-Jier Mii - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$5K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Bor-Zen Tien - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$3K

Oct 7, 2026

Bor-Zen Tien - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$556

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Chin-Sheng Lu - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Lee-Chung Lu - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Shyue-Shyh Lin - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Chris Horng-Dar Lin - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F4}

$3K

Footnote F4 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Chun-Hsien Lee - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yao-Ching Ku - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yuan-Ko Hwang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Jen-Chau Huang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$2K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Syun-Ming Jang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yung-Chin Hou - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$5K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Kuo-Chin Hsu - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$4K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Jun He - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F5}

$3K

Footnote F5 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Tzu-Sou Chuang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$4K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Min Cao - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$4K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Yung-Pei Chin - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$5K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Tzonz-Sheng Chang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$4K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Shu-Hua Fang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F3}

$4K

Footnote F3 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Juiping Chuang - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F4}

$4K

Footnote F4 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Pei-Hung Chen - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$3K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Oct 7, 2026

Chih-Ho Chen - Officer

Open-market purchase

Common Shares (2330.TW)

$79.39^{footnote F2}

$2K

Footnote F2 (price): The price was translated from the average purchase price of NT$2,524.2277 in New Taiwan dollars, at the rate of NT$31.795 to US$1.

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Gilbert Ray Cisneros, Jr.Democrat, CA-31	Purchase

Member

Type

Traded

Disclosed

Value range

Owner

Days to disclose

Filing

Gilbert Ray Cisneros, Jr.Democrat, CA-31

Purchase