ASE Technology Holding Co., Ltd. ADR (ASX) Insider Trading

Last 12 months

Insiders sold $370M and bought nothing on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. GM, ASE Inc. Chung-Li Branch Tien-Szu Chen sold $247M on Apr 20, 19% of their stake, outside a plan. No executive or director has bought shares on the open market in the last two years.

Net open-market

−$370M

0 buys · 16 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 3

executives and directors

Last open-market buy

None

in the last two years

Get an email when ASX's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 12	Du-Tsuen Uang Chief Administration Officer	SoldNo plan	3,000	$752.00	$2.26M	0.4%	Form 4
Jul 22	Du-Tsuen Uang Chief Administration Officer	SoldNo plan	3,000	$665.00	$2M	0.4%	Form 4
Jul 15	Du-Tsuen Uang Chief Administration Officer	SoldNo plan	3,000	$688.00	$2.06M	0.4%	Form 4
Jul 6	Du-Tsuen Uang Chief Administration Officer	SoldNo plan	2,000	$687.00	$1.37M	0.3%	Form 4
Jun 30 – Jul 1	Du-Tsuen Uang Chief Administration Officer	SoldNo plan 3 parts	8,000	$686.63 average	$5.49M	1.0%	Form 4
Jun 18 – 23	Du-Tsuen Uang Chief Administration Officer	SoldNo plan 3 parts	11,000	$659.91 average	$7.26M	1.4%	Form 4
Jun 1 – 3	Du-Tsuen Uang Chief Administration Officer	SoldNo plan 2 parts	10,000	$612.00 average	$6.12M	1.3%	Form 4
May 22 – 27	Jeffrey Chen Director	SoldNo plan 4 parts	29,000	$590.62 average	$17.1M	1.2%	Form 4
May 19 – 21	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$488.33 average	$13.2M	1.1%	Form 4
May 14 – 18	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$543.00 average	$14.7M	1.1%	Form 4
Apr 24	Jeffrey Chen Director	SoldNo plan	9,000	$473.00	$4.26M	0.4%	Form 4
Apr 21 – 23	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$472.56 average	$12.8M	1.1%	Form 4
Apr 20	Tien-Szu Chen GM, ASE Inc. Chung-Li Branch	SoldNo plan 4 parts	530,000	$466.30 average	$247M	19%	Form 4
Apr 16 – 20	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$453.83 average	$12.3M	1.1%	Form 4
Apr 13 – 15	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$422.44 average	$11.4M	1.1%	Form 4
Apr 8 – 10	Jeffrey Chen Director	SoldNo plan 3 parts	27,000	$385.17 average	$10.4M	1.0%	Form 4

Oct 12No plan
Du-Tsuen Uang
Chief Administration Officer · sold 3,000 at $752.00
$2.26M
0.4% of stake
Jul 22No plan
Du-Tsuen Uang
Chief Administration Officer · sold 3,000 at $665.00
$2M
0.4% of stake
Jul 15No plan
Du-Tsuen Uang
Chief Administration Officer · sold 3,000 at $688.00
$2.06M
0.4% of stake
Jul 6No plan
Du-Tsuen Uang
Chief Administration Officer · sold 2,000 at $687.00
$1.37M
0.3% of stake
Jun 30 – Jul 1No plan
Du-Tsuen Uang
Chief Administration Officer · sold 8,000 at avg $686.63
$5.49M
1.0% of stake
Jun 18 – 23No plan
Du-Tsuen Uang
Chief Administration Officer · sold 11,000 at avg $659.91
$7.26M
1.4% of stake
Jun 1 – 3No plan
Du-Tsuen Uang
Chief Administration Officer · sold 10,000 at avg $612.00
$6.12M
1.3% of stake
May 22 – 27No plan
Jeffrey Chen
Director · sold 29,000 at avg $590.62
$17.1M
1.2% of stake
May 19 – 21No plan
Jeffrey Chen
Director · sold 27,000 at avg $488.33
$13.2M
1.1% of stake
May 14 – 18No plan
Jeffrey Chen
Director · sold 27,000 at avg $543.00
$14.7M
1.1% of stake
Apr 24No plan
Jeffrey Chen
Director · sold 9,000 at $473.00
$4.26M
0.4% of stake
Apr 21 – 23No plan
Jeffrey Chen
Director · sold 27,000 at avg $472.56
$12.8M
1.1% of stake
Apr 20No plan
Tien-Szu Chen
GM, ASE Inc. Chung-Li Branch · sold 530,000 at avg $466.30
$247M
19% of stake
Apr 16 – 20No plan
Jeffrey Chen
Director · sold 27,000 at avg $453.83
$12.3M
1.1% of stake
Apr 13 – 15No plan
Jeffrey Chen
Director · sold 27,000 at avg $422.44
$11.4M
1.1% of stake
Apr 8 – 10No plan
Jeffrey Chen
Director · sold 27,000 at avg $385.17
$10.4M
1.0% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ASX, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

Related stocks: Semiconductors

001820.XKRXSamwha Capacitor Co., Ltd.

ADTTFAdvantest Corp.

UMCUnited Microelectronics Corp. ADR

DIDIYDiDi Global Inc.

002450.XKRXSamick Musical Instruments Co., Ltd.

000990.XKRXDB HiTek Co., Ltd.

KXHCFKioxia Holdings Corporation

000500.XKRXGaon Cable Co., Ltd.

Spot a number that looks wrong?

Download this analysis as a PDF (Pro)

Data sourced from company filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

2 of 2 free stocks used today

Keep analysing ASX

Create a free account and get 14 days of Premium: every stock and every tool.

Unlimited stocksQuality, fair value and dividends for 10,000+ stocks
Stock screenerFilter on quality, valuation and dividend safety
Portfolio trackerReal return, dividend calendar and portfolio quality
Editable DCFChange the assumptions and watch fair value move
Compare side by sideUp to 10 stocks in one table
Unlimited alertsPrice, P/E, Quality Score and yield

No card. Moves to Free after, unless you upgrade.

Already have an account?

Or come back tomorrow. Stocks on your watchlist are always free to view.