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 2.0%. Over the past 90 days, insiders made 2 sales worth $4.1M.

Shares Outstanding

2.604B

Shares Float

2.047B

Institutional Shares Held

42.882M

Institutional % Held

2.0%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$4.1M total

Net Activity

Net Selling

Net Value (90d)

-$4.1M

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

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