United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

US · SEC FORM 4

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

TSM · NYSE; OTC · CIK 0001046179 · Technology · Semiconductors

INSIDER SIGNAL

No active buy signal

200 qualifying P purchase groups
in the current 180-day scoring window

242 Form 4 transaction lines observed in the same window
2 sales · 25 option, withholding, award, gift or other lines

Last qualifying purchase2026-10-07 · Cao Min · $4.0K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent

Recent buying200 qualifying line group(s)

Recent salesLow

Buy signal statusInactive

Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated

Purchase sizeNot calculated

RoleNot calculated

RecencyNot calculated

ConvictionNot calculated

Why is there no score?

No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct

Zhang Kevin XiaoqiangSVP and Deputy Co-COO

●●

Yuan LipenVP

●●

Yoo Chue-SanVP

●●

Yeap Choh FeiSVP

●●

Wu Yi-HuangVP

●●

Wu Shien-YangSVP

●●

● Purchase▼ Sale○ Other

Showing the six most active owners; 24 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS31

PURCHASE CONCENTRATION34%Largest buyer: Tien Bor-Zen · $774.9K

CLUSTER BUYING · 15D31 insidersPeak activity: 2026-06-05–2026-06-15

Roles in the peak window: Chairman and CEO, Controller, EVP and Co-COO, SVP, SVP and CFO, SVP and Deputy Co-COO, SVP and GC, VP, VP and CIO. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-10-07 · Cao Min.

Recent Form 4 activity

248Purchases

2Sales

25Other Form 4 lines

251SEC filings · 365 days

BUYING215 qualifying P line(s) · 180 days

SELLING2 sale line(s) · context only

OTHER25 exercise / withholding / award / gift / other lines

10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M: +2.6%
3M: +5.7%
6M: +20.2%
12M: +48.2%

Volatility & liquidity

Volatility: 41.1%
Beta: —
Avg daily value: USD 5.0B

Valuation

Market cap: —
P/E: —

Fundamentals

Profit margin: —
ROE: —
Industry: Semiconductors

Market data

Price data up to: 2026-10-12 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short: 30,492,512
Previous report: 27,789,695
Avg daily volume: 9,954,640
Days to cover: 3.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction date	Reporting owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-10-07	Zhang Kevin Xiaoqiang	Purchase (P)	Common Shares (2330.TW)	59	USD 79.39	USD 4,684	SEC filing ↗
2026-10-07	Yuan Lipen	Purchase (P)	Common Shares (2330.TW)	40	USD 79.39	USD 3,176	SEC filing ↗
2026-10-07	Yoo Chue-San	Purchase (P)	Common Shares (2330.TW)	50	USD 79.39	USD 3,970	SEC filing ↗
2026-10-07	Yeap Choh Fei	Purchase (P)	Common Shares (2330.TW)	52	USD 79.39	USD 4,128	SEC filing ↗
2026-10-07	Wu Yi-Huang	Purchase (P)	Common Shares (2330.TW)	39	USD 79.39	USD 3,096	SEC filing ↗
2026-10-07	Wu Shien-Yang	Purchase (P)	Common Shares (2330.TW)	53	USD 79.39	USD 4,208	SEC filing ↗
2026-10-07	Wei Che-Chia	Purchase (P)	Common Shares (2330.TW)	144	USD 79.39	USD 11,432	SEC filing ↗
2026-10-07	Wang Ying-Lang	Purchase (P)	Common Shares (2330.TW)	52	USD 79.39	USD 4,128	SEC filing ↗
2026-10-07	Tien Bor-Zen	Purchase (P)	Common Shares (2330.TW)	47	USD 79.39	USD 3,731	SEC filing ↗
2026-10-07	Mii Yuh-Jier	Purchase (P)	Common Shares (2330.TW)	68	USD 79.39	USD 5,399	SEC filing ↗
2026-10-07	Lu Lee-Chung	Purchase (P)	Common Shares (2330.TW)	49	USD 79.39	USD 3,890	SEC filing ↗
2026-10-07	Lu Chin-Sheng	Purchase (P)	Common Shares (2330.TW)	36	USD 79.39	USD 2,858	SEC filing ↗
2026-10-07	Lin Shyue-Shyh	Purchase (P)	Common Shares (2330.TW)	44	USD 79.39	USD 3,493	SEC filing ↗
2026-10-07	Lin Chris Horng-Dar	Purchase (P)	Common Shares (2330.TW)	44	USD 79.39	USD 3,493	SEC filing ↗
2026-10-07	Lee Chun-Hsien	Purchase (P)	Common Shares (2330.TW)	51	USD 79.39	USD 4,049	SEC filing ↗

Form 4 evidence

275 transaction lines in the latest 365-day window; 275 in local history.

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-10-07	Zhang Kevin Xiaoqiang	Purchase (P)	Common Shares (2330.TW)	59	USD 79.39	USD 4,684	SEC filing ↗
2026-10-07	Yuan Lipen	Purchase (P)	Common Shares (2330.TW)	40	USD 79.39	USD 3,176	SEC filing ↗
2026-10-07	Yoo Chue-San	Purchase (P)	Common Shares (2330.TW)	50	USD 79.39	USD 3,970	SEC filing ↗

Show recent Form 4 evidence (30 grouped rows)

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-10-07	Zhang Kevin Xiaoqiang	Purchase (P)	Common Shares (2330.TW)	59	USD 79.39	USD 4,684	SEC filing ↗
2026-10-07	Yuan Lipen	Purchase (P)	Common Shares (2330.TW)	40	USD 79.39	USD 3,176	SEC filing ↗
2026-10-07	Yoo Chue-San	Purchase (P)	Common Shares (2330.TW)	50	USD 79.39	USD 3,970	SEC filing ↗
2026-10-07	Yeap Choh Fei	Purchase (P)	Common Shares (2330.TW)	52	USD 79.39	USD 4,128	SEC filing ↗
2026-10-07	Wu Yi-Huang	Purchase (P)	Common Shares (2330.TW)	39	USD 79.39	USD 3,096	SEC filing ↗
2026-10-07	Wu Shien-Yang	Purchase (P)	Common Shares (2330.TW)	53	USD 79.39	USD 4,208	SEC filing ↗
2026-10-07	Wei Che-Chia	Purchase (P)	Common Shares (2330.TW)	144	USD 79.39	USD 11,432	SEC filing ↗
2026-10-07	Wang Ying-Lang	Purchase (P)	Common Shares (2330.TW)	52	USD 79.39	USD 4,128	SEC filing ↗
2026-10-07	Tien Bor-Zen	Purchase (P)	Common Shares (2330.TW)	47	USD 79.39	USD 3,731	SEC filing ↗
2026-10-07	Mii Yuh-Jier	Purchase (P)	Common Shares (2330.TW)	68	USD 79.39	USD 5,399	SEC filing ↗
2026-10-07	Lu Lee-Chung	Purchase (P)	Common Shares (2330.TW)	49	USD 79.39	USD 3,890	SEC filing ↗
2026-10-07	Lu Chin-Sheng	Purchase (P)	Common Shares (2330.TW)	36	USD 79.39	USD 2,858	SEC filing ↗
2026-10-07	Lin Shyue-Shyh	Purchase (P)	Common Shares (2330.TW)	44	USD 79.39	USD 3,493	SEC filing ↗
2026-10-07	Lin Chris Horng-Dar	Purchase (P)	Common Shares (2330.TW)	44	USD 79.39	USD 3,493	SEC filing ↗
2026-10-07	Lee Chun-Hsien	Purchase (P)	Common Shares (2330.TW)	51	USD 79.39	USD 4,049	SEC filing ↗
2026-10-07	Ku Yao-Ching	Purchase (P)	Common Shares (2330.TW)	46	USD 79.39	USD 3,652	SEC filing ↗
2026-10-07	Jang Syun-Ming	Purchase (P)	Common Shares (2330.TW)	46	USD 79.39	USD 3,652	SEC filing ↗
2026-10-07	Hwang Yuan-Ko	Purchase (P)	Common Shares (2330.TW)	39	USD 79.39	USD 3,096	SEC filing ↗
2026-10-07	Huang Jen-Chau	Purchase (P)	Common Shares (2330.TW)	28	USD 79.39	USD 2,223	SEC filing ↗
2026-10-07	Hsu Kuo-Chin	Purchase (P)	Common Shares (2330.TW)	52	USD 79.39	USD 4,128	SEC filing ↗
2026-10-07	Hou Yung-Chin	Purchase (P)	Common Shares (2330.TW)	60	USD 79.39	USD 4,763	SEC filing ↗
2026-10-07	He Jun	Purchase (P)	Common Shares (2330.TW)	43	USD 79.39	USD 3,414	SEC filing ↗
2026-10-07	Fang Shu-Hua	Purchase (P)	Common Shares (2330.TW)	53	USD 79.39	USD 4,208	SEC filing ↗
2026-10-07	Chuang Tzu-Sou	Purchase (P)	Common Shares (2330.TW)	46	USD 79.39	USD 3,652	SEC filing ↗
2026-10-07	Chuang Juiping	Purchase (P)	Common Shares (2330.TW)	46	USD 79.39	USD 3,652	SEC filing ↗
2026-10-07	Chin Yung-Pei	Purchase (P)	Common Shares (2330.TW)	67	USD 79.39	USD 5,319	SEC filing ↗
2026-10-07	Chen Pei-Hung	Purchase (P)	Common Shares (2330.TW)	43	USD 79.39	USD 3,414	SEC filing ↗
2026-10-07	Chen Chih-Ho	Purchase (P)	Common Shares (2330.TW)	31	USD 79.39	USD 2,461	SEC filing ↗
2026-10-07	Chang Tzonz-Sheng	Purchase (P)	Common Shares (2330.TW)	51	USD 79.39	USD 4,049	SEC filing ↗
2026-10-07	Cao Min	Purchase (P)	Common Shares (2330.TW)	51	USD 79.39	USD 4,049	SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date	2026-10-18
Ranking version	US-v1.2
Data quality	PASS ELIGIBLE · —
Ticker	TSM
CIK	0001046179
Sector	Technology
Industry	Semiconductors Yahoo Finance
SEC SIC	3674 Semiconductors & Related Devices
Exchange	NYSE; OTC

Data coverage

Local Form 4 history	275 transaction lines from 2026-03-22 to 2026-10-07 248 P purchase lines · 2 S sale lines · 25 other lines
SEC company submissions	Open SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.