Tien Bor-Zen Insider Trading Activity

Corporate InsiderVP · CIK 2114023

Total trades

$149K

Total volume

Jun 5, 2026

Last activity

TSM

TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

Tien Bor-Zen has been net-buying over the last 12 months with 12 purchases and 0 sales across 1 company.

TSM is the most-traded position with 12 trades. The largest single transaction was a purchase of TSM for $70K on May 19, 2026.

Performance Scorecard

Forward stock performance after each transaction by Tien Bor-Zen. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	+355.0%	—	100%	5
90 days	—	—	—	—
120 days	—	—	—	—

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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TSM · TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	ROLE
Jun 5, 2026	TSM	Buy	43	$76.01	$3K	VP
Jun 5, 2026	TSM	Buy	7	$76.01	$532.07	VP
May 20, 2026	TSM	Buy	7	$400.00	$3K	VP
May 19, 2026	TSM	Buy	10	$391.81	$4K	VP
May 19, 2026	TSM	Buy	1,000	$69.98	$70K	VP
May 8, 2026	TSM	Buy	44	$71.82	$3K	VP
May 8, 2026	TSM	Buy	7	$71.82	$502.74	VP
Apr 28, 2026	TSM	Buy	5	$390.00	$2K	VP
Apr 28, 2026	TSM	Buy	10	$386.00	$4K	VP
Apr 9, 2026	TSM	Buy	53	$57.87	$3K	VP
Apr 9, 2026	TSM	Buy	9	$57.87	$520.83	VP
Mar 22, 2026	TSM	Buy	1,000	$55.93	$56K	VP