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ASE Technology Holding Co., Ltd. insider trading

In twelve months insiders at ASE Technology Holding Co. bought nothing and made 39 sales on the open market; none of the 39 sales was under a plan set in advance. 39 lines filed with a home-currency price are counted, with no dollar value.

Bought on the open marketNonein twelve months
Sold on the open marketHome currency39 sales, all priced in the home currency
Sales set in advanceNoneall 39 chosen by the insider
Pay taken in stockNone
New to this? How to read this page
  1. Insiders are the people who run the company: officers, directors and owners of 10% or more. They must report a trade on Form 4 within two business days.
  2. A purchase on the open market is the strongest sign: the insider spent their own money.
  3. A sale under a trading plan (Rule 10b5-1) says little: its dates were fixed months before. Sales outside a plan say more, but insiders sell for many reasons, such as taxes or a house.
  4. Grants, option exercises and shares held back for tax are left out.
  5. What is a Form 4? · Form 4 codes
  6. Share counts are ASE Technology Holding Co., Ltd.'s ordinary shares, as filed; one US-listed share stands for 2 ordinary shares. Prices are in US dollars as filed, the filing's footnote giving any conversion from the home currency; a price marked as filed, not in US dollars, is the home-market price the filing gave, and its value is not worked out.

What kind of trades

Insiders only sold: 39 sales priced in the home currency, each on a day the insider chose.

Purchasebought with their own money
Pay in stock, own choiceowed cash, chose shares
Sale outside a planthe insider picked the day
Sale under a plandates fixed months before
Says littlecompany plans, board pay, cash units
Bought
none
Sold
39 outside a plan

Every Form 4 line of the last twelve months, counted by kind. The grades come from the filing itself: whether the insider paid cash, whether a plan set the date, whether pay was taken in stock by choice.

Insider trades on the share price

last twelve months

35 marks over twelve months, each in its grade: solid for the stronger signs, hollow or grey for the ones that say little.

PurchasePay in stock, own choiceSale outside a planSale under a planSays little

The blue line is the daily close over twelve months. Each mark is one insider's trades on one day, on that day's price, sized by dollar value. Solid marks are the stronger signs; hollow and grey marks say little. Hover or tap a mark for who, how much and why.

Trades worth a closer look

A purchase stands out when two or more of these hold: a senior insider, several insiders buying within 90 days, a fall of 10% or more in the three months before, or over $1 million. A sale outside a plan is judged the same way. These are the Feed's rules.

How it compares

every company on the site

Open-market sales, twelve months

Open-market purchases, twelve months

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every Form 4 line

    Purchase: bought on the open market with their own moneyTook pay in stock, own choice: owed cash, chose shares instead; a softer signSale: sold on the open market, not under a plan set in advanceSale, trading plan: under a Rule 10b5-1 plan set up months before, so the date was fixed in advanceGrey lines: plan purchases, pay in stock taken by the whole board or under a company plan, and units paid in cash; they say little about the insider's own view
    TradedInsiderRoleTypeSharesPriceValueFiling
    12 October 2026Uang Du-TsuenChief Administration OfficerSaleafter a 17% rise over three months · at its one-year high3,000ordinary shares752.00as filed, not in US dollarsn/aForm 4
    22 July 2026Uang Du-TsuenChief Administration OfficerSaleafter a 35% rise over three months · 10% below its one-year high3,000ordinary shares665.00as filed, not in US dollarsn/aForm 4
    15 July 2026Uang Du-TsuenChief Administration OfficerSaleafter a 50% rise over three months · 10% below its one-year high3,000ordinary shares688.00as filed, not in US dollarsn/aForm 4
    6 July 2026Uang Du-TsuenChief Administration OfficerSaleafter a 92% rise over three months · 4% below its one-year high2,000ordinary shares687.00as filed, not in US dollarsn/aForm 4
    1 July 2026Uang Du-TsuenChief Administration OfficerSaleafter a 91% rise over three months · 5% below its one-year high3,000ordinary shares709.00as filed, not in US dollarsn/aForm 4
    30 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 108% rise over three months · at its one-year high3,000ordinary shares664.00as filed, not in US dollarsn/aForm 4
    30 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 108% rise over three months · at its one-year high2,000ordinary shares687.00as filed, not in US dollarsn/aForm 4
    23 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 85% rise over three months · 9% below its one-year high3,000ordinary shares697.00as filed, not in US dollarsn/aForm 4
    22 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 101% rise over three months · at its one-year high5,000ordinary shares667.00as filed, not in US dollarsn/aForm 4
    18 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 85% rise over three months · at its one-year high3,000ordinary shares611.00as filed, not in US dollarsn/aForm 4
    3 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 81% rise over three months · at its one-year high5,000ordinary shares617.00as filed, not in US dollarsn/aForm 4
    1 June 2026Uang Du-TsuenChief Administration OfficerSaleafter a 58% rise over three months · 6% below its one-year high5,000ordinary shares607.00as filed, not in US dollarsn/aForm 4
    27 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 56% rise over three months · at its one-year high2,000ordinary shares653.00as filed, not in US dollarsn/aForm 4
    26 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 57% rise over three months · at its one-year high9,000ordinary shares630.00as filed, not in US dollarsn/aForm 4
    25 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 48% rise over three months · at its one-year high9,000ordinary shares590.00as filed, not in US dollarsn/aForm 4
    22 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 45% rise over three months · at its one-year high9,000ordinary shares538.00as filed, not in US dollarsn/aForm 4
    21 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 41% rise over three months · 8% below its one-year high9,000ordinary shares505.00as filed, not in US dollarsn/aForm 4
    20 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 36% rise over three months · 11% below its one-year high9,000ordinary shares477.00as filed, not in US dollarsn/aForm 4
    19 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 32% rise over three months · 13% below its one-year high9,000ordinary shares483.00as filed, not in US dollarsn/aForm 4
    18 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 35% rise over three months · 11% below its one-year high9,000ordinary shares506.00as filed, not in US dollarsn/aForm 4
    15 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 44% rise over three months · 5% below its one-year high9,000ordinary shares563.00as filed, not in US dollarsn/aForm 4
    14 May 2026Chen Jeffrey, by SpouseDirectorSaleafter a 50% rise over three months · at its one-year high9,000ordinary shares560.00as filed, not in US dollarsn/aForm 4
    24 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 65% rise over three months · at its one-year high9,000ordinary shares473.00as filed, not in US dollarsn/aForm 4
    23 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 56% rise over three months · at its one-year high9,000ordinary shares487.67as filed, not in US dollarsn/aForm 4
    22 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 58% rise over three months · at its one-year high9,000ordinary shares466.50as filed, not in US dollarsn/aForm 4
    21 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 57% rise over three months · at its one-year high9,000ordinary shares463.50as filed, not in US dollarsn/aForm 4
    20 April 2026Chen Tien-SzuGM, ASE Inc. Chung-Li BranchSaleafter a 51% rise over three months · at its one-year high328,000ordinary shares465.11as filed, not in US dollarsn/aForm 4
    20 April 2026Chen Tien-SzuGM, ASE Inc. Chung-Li BranchSaleafter a 51% rise over three months · at its one-year high72,000ordinary shares466.00as filed, not in US dollarsn/aForm 4
    20 April 2026Chen Tien-SzuGM, ASE Inc. Chung-Li BranchSaleafter a 51% rise over three months · at its one-year high50,000ordinary shares467.00as filed, not in US dollarsn/aForm 4
    20 April 2026Chen Tien-SzuGM, ASE Inc. Chung-Li BranchSaleafter a 51% rise over three months · at its one-year high80,000ordinary shares471.00as filed, not in US dollarsn/aForm 4
    20 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 51% rise over three months · at its one-year high9,000ordinary shares461.50as filed, not in US dollarsn/aForm 4
    17 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 47% rise over three months · at its one-year high9,000ordinary shares454.00as filed, not in US dollarsn/aForm 4
    16 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 44% rise over three months · at its one-year high9,000ordinary shares446.00as filed, not in US dollarsn/aForm 4
    15 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 44% rise over three months · at its one-year high9,000ordinary shares432.00as filed, not in US dollarsn/aForm 4
    14 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 44% rise over three months · at its one-year high9,000ordinary shares427.00as filed, not in US dollarsn/aForm 4
    13 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 45% rise over three months · at its one-year high9,000ordinary shares408.33as filed, not in US dollarsn/aForm 4
    10 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 41% rise over three months · at its one-year high9,000ordinary shares387.00as filed, not in US dollarsn/aForm 4
    9 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 41% rise over three months · 2% below its one-year high9,000ordinary shares388.00as filed, not in US dollarsn/aForm 4
    8 April 2026Chen Jeffrey, by SpouseDirectorSaleafter a 37% rise over three months · 4% below its one-year high9,000ordinary shares380.50as filed, not in US dollarsn/aForm 4
    Share counts are ASE Technology Holding Co., Ltd.'s ordinary shares, as filed; one US-listed share stands for 2 ordinary shares.
    Read morePrices are in US dollars as filed, the filing's footnote giving any conversion from the home currency; a price marked as filed, not in US dollars, is the home-market price the filing gave, and its value is not worked out. A filing with several lines appears once per line. Pay taken in stock by the insider's own choice has the filing's footnote, word for word, in the note under it; for the others, hold the pointer on the type. An award filed at no price shows n/a.