ASE Technology Holding Co Ownership & Insider Activity

ASE Technology Holding Co (ASX) institutional and insider ownership, recent insider transactions and ownership breakdown.

Institutional investors hold 2.2%. Over the past 90 days, insiders made 6 sales worth $24.3M.

Shares Outstanding

2.604B

Shares Float

2.047B

Institutional Shares Held

47.993M

Institutional % Held

2.2%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$24.3M total

Net Activity

Net Selling

Net Value (90d)

-$24.3M

ASE Technology Holding Co Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Jul 22, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	3.000K	$665.00	$2.0M
Jul 15, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	3.000K	$688.00	$2.1M
Jul 6, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	2.000K	$687.00	$1.4M
Jun 30, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	8.000K	$686.63	$5.5M
Jun 18, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	11.000K	$659.91	$7.3M
Jun 1, 2026	Du-Tsuen Uang	CHIEF ADMINISTRATION OFFICER	SELL	10.000K	$612.00	$6.1M
May 22, 2026	Jeffrey Chen	DIRECTOR	SELL	29.000K	$590.62	$17.1M
May 19, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$488.33	$13.2M
May 14, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$543.00	$14.7M
Apr 24, 2026	Jeffrey Chen	DIRECTOR	SELL	9.000K	$473.00	$4.3M
Apr 21, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$472.56	$12.8M
Apr 20, 2026	Chen Tien-Szu	GM, ASE INC. CHUNG-LI BRANCH	SELL	530.000K	$466.30	$247.1M
Apr 16, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$453.83	$12.3M
Apr 13, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$422.44	$11.4M
Apr 8, 2026	Jeffrey Chen	DIRECTOR	SELL	27.000K	$385.17	$10.4M

Date	Member	Party	Chamber	Action	Amount
Mar 18, 2025	Sheri Biggs	R	House	S	$1,001 - $15,000