ASX

insider transactions

ASE Technology Holding Co., Ltd. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 365d

-740.0K

0 buy · 740.0K sell

Net value · 365d

-$349.3M

$0 in · $349.3M out

Sentiment · 365d

Net selling

0% buying · 100% selling

Open-market trades · 365d

0 buy · 740.0K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Sell·S
Jun 3, 26

Du-Tsuen Uang

Chief Administration Officer

$3.1M

5.0K sh · $617.00

Own -1%
Sell·S
Jun 1, 26

Du-Tsuen Uang

Chief Administration Officer

$3.0M

5.0K sh · $607.00

Own -1%
Sell·S
May 27, 26

Jeffrey Chen

Director

$1.3M

2.0K sh · $653.00

Own -100%
Sell·S
May 26, 26

Jeffrey Chen

Director

$5.7M

9.0K sh · $630.00

Own -82%
Sell·S
May 25, 26

Jeffrey Chen

Director

$5.3M

9.0K sh · $590.00

Own -45%
Sell·S
May 22, 26

Jeffrey Chen

Director

$4.8M

9.0K sh · $538.00

Own -31%
Sell·S
May 21, 26

Jeffrey Chen

Director

$4.5M

9.0K sh · $505.00

Own -24%
Sell·S
May 20, 26

Jeffrey Chen

Director

$4.3M

9.0K sh · $477.00

Own -19%
Sell·S
May 19, 26

Jeffrey Chen

Director

$4.3M

9.0K sh · $483.00

Own -16%
Sell·S
May 18, 26

Jeffrey Chen

Director

$4.6M

9.0K sh · $506.00

Own -14%
Sell·S
May 15, 26

Jeffrey Chen

Director

$5.1M

9.0K sh · $563.00

Own -12%
Sell·S
May 14, 26

Jeffrey Chen

Director

$5.0M

9.0K sh · $560.00

Own -11%
Sell·S
Apr 24, 26

Jeffrey Chen

Director

$4.3M

9.0K sh · $473.00

Own -10%
Sell·S
Apr 23, 26

Jeffrey Chen

Director

$4.4M

9.0K sh · $487.67

Own -9%
Sell·S
Apr 22, 26

Jeffrey Chen

Director

$4.2M

9.0K sh · $466.50

Own -8%
Sell·S
Apr 21, 26

Jeffrey Chen

Director

$4.2M

9.0K sh · $463.50

Own -8%
Sell·S
Apr 20, 26

Jeffrey Chen

Director

$4.2M

9.0K sh · $461.50

Own -7%
Sell·S
Apr 20, 26

Tien-Szu Chen

GM, ASE Inc. Chung-Li Branch

$37.7M

80.0K sh · $471.00

Own -3%
Sell·S
Apr 20, 26

Tien-Szu Chen

GM, ASE Inc. Chung-Li Branch

$23.4M

50.0K sh · $467.00

Own -2%
Sell·S
Apr 20, 26

Tien-Szu Chen

GM, ASE Inc. Chung-Li Branch

$33.6M

72.0K sh · $466.00

Own -3%
Sell·S
Apr 20, 26

Tien-Szu Chen

GM, ASE Inc. Chung-Li Branch

$152.6M

328.0K sh · $465.11

Own -12%
Sell·S
Apr 17, 26

Jeffrey Chen

Director

$4.1M

9.0K sh · $454.00

Own -7%
Sell·S
Apr 16, 26

Jeffrey Chen

Director

$4.0M

9.0K sh · $446.00

Own -6%
Sell·S
Apr 15, 26

Jeffrey Chen

Director

$3.9M

9.0K sh · $432.00

Own -6%
Sell·S
Apr 14, 26

Jeffrey Chen

Director

$3.8M

9.0K sh · $427.00

Own -5%
Sell·S
Apr 13, 26

Jeffrey Chen

Director

$3.7M

9.0K sh · $408.33

Own -5%
Sell·S
Apr 10, 26

Jeffrey Chen

Director

$3.5M

9.0K sh · $387.00

Own -5%
Sell·S
Apr 9, 26

Jeffrey Chen

Director

$3.5M

9.0K sh · $388.00

Own -5%
Exercise·M
Apr 9, 26

Chien Shen Chang

Director

$0

1.5M sh

Own New
Exercise·M
Apr 9, 26

Chien Shen Chang

Director

$0

3.0M sh

Own New
Exercise·M
Apr 9, 26

Chien Shen Chang

Director

$149.6M

1.5M sh · $99.70

Own +32%
Exercise·M
Apr 9, 26

Chien Shen Chang

Director

$123.3M

3.0M sh · $41.10

Own +172%
Sell·S
Apr 8, 26

Jeffrey Chen

Director

$3.4M

9.0K sh · $380.50

Own -4%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 3, 2026	Du-Tsuen Uang	Chief Administration Officer	Sell S	5.0K	-1%	$617.00	$3.1M
Jun 1, 2026	Du-Tsuen Uang	Chief Administration Officer	Sell S	5.0K	-1%	$607.00	$3.0M
May 27, 2026	Jeffrey Chen	Director	Sell S	2.0K	-100%	$653.00	$1.3M
May 26, 2026	Jeffrey Chen	Director	Sell S	9.0K	-82%	$630.00	$5.7M
May 25, 2026	Jeffrey Chen	Director	Sell S	9.0K	-45%	$590.00	$5.3M
May 22, 2026	Jeffrey Chen	Director	Sell S	9.0K	-31%	$538.00	$4.8M
May 21, 2026	Jeffrey Chen	Director	Sell S	9.0K	-24%	$505.00	$4.5M
May 20, 2026	Jeffrey Chen	Director	Sell S	9.0K	-19%	$477.00	$4.3M
May 19, 2026	Jeffrey Chen	Director	Sell S	9.0K	-16%	$483.00	$4.3M
May 18, 2026	Jeffrey Chen	Director	Sell S	9.0K	-14%	$506.00	$4.6M
May 15, 2026	Jeffrey Chen	Director	Sell S	9.0K	-12%	$563.00	$5.1M
May 14, 2026	Jeffrey Chen	Director	Sell S	9.0K	-11%	$560.00	$5.0M
Apr 24, 2026	Jeffrey Chen	Director	Sell S	9.0K	-10%	$473.00	$4.3M
Apr 23, 2026	Jeffrey Chen	Director	Sell S	9.0K	-9%	$487.67	$4.4M
Apr 22, 2026	Jeffrey Chen	Director	Sell S	9.0K	-8%	$466.50	$4.2M
Apr 21, 2026	Jeffrey Chen	Director	Sell S	9.0K	-8%	$463.50	$4.2M
Apr 20, 2026	Jeffrey Chen	Director	Sell S	9.0K	-7%	$461.50	$4.2M
Apr 20, 2026	Tien-Szu Chen	GM, ASE Inc. Chung-Li Branch	Sell S	80.0K	-3%	$471.00	$37.7M
Apr 20, 2026	Tien-Szu Chen	GM, ASE Inc. Chung-Li Branch	Sell S	50.0K	-2%	$467.00	$23.4M
Apr 20, 2026	Tien-Szu Chen	GM, ASE Inc. Chung-Li Branch	Sell S	72.0K	-3%	$466.00	$33.6M
Apr 20, 2026	Tien-Szu Chen	GM, ASE Inc. Chung-Li Branch	Sell S	328.0K	-12%	$465.11	$152.6M
Apr 17, 2026	Jeffrey Chen	Director	Sell S	9.0K	-7%	$454.00	$4.1M
Apr 16, 2026	Jeffrey Chen	Director	Sell S	9.0K	-6%	$446.00	$4.0M
Apr 15, 2026	Jeffrey Chen	Director	Sell S	9.0K	-6%	$432.00	$3.9M
Apr 14, 2026	Jeffrey Chen	Director	Sell S	9.0K	-5%	$427.00	$3.8M
Apr 13, 2026	Jeffrey Chen	Director	Sell S	9.0K	-5%	$408.33	$3.7M
Apr 10, 2026	Jeffrey Chen	Director	Sell S	9.0K	-5%	$387.00	$3.5M
Apr 9, 2026	Jeffrey Chen	Director	Sell S	9.0K	-5%	$388.00	$3.5M
Apr 9, 2026	Chien Shen Chang	Director	Exercise M	1.5M	New	—	$0
Apr 9, 2026	Chien Shen Chang	Director	Exercise M	3.0M	New	—	$0
Apr 9, 2026	Chien Shen Chang	Director	Exercise M	1.5M	+32%	$99.70	$149.6M
Apr 9, 2026	Chien Shen Chang	Director	Exercise M	3.0M	+172%	$41.10	$123.3M
Apr 8, 2026	Jeffrey Chen	Director	Sell S	9.0K	-4%	$380.50	$3.4M

About ASX insider trading

This page tracks insider transactions for ASE Technology Holding Co., Ltd. (ASX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.