ASE Technology Holding Co., Ltd. (ASX)
$39.95+$2.00 (+5.27%) Latest session
ASE Technology Holding Co Ltd is a semiconductor assembly and testing firm. The company operates in segments: Packaging, Testing, Electronic Manufacturing Services and others. Of these, Packaging segment contribute the maximum revenue. The packaging segment involves packaging bare semiconductors into completed semiconductors with improved electrical and thermal characteristics. The Testing Segment includes front-end engineering testing, wafer probing, and final testing services. In the EMS segment, the company designs manufactures, and sells electronic components and telecommunication equipment motherboards. The company is based in Taiwan but generates over half its sales from firms in the United States.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 9 | 27,000 | $18.18M |
| Grant or award | 12 | 2,659,000 | |
| Option exercise | 12 | 9,800,000 | |
| Bona-fide gift | 2 | 1,200,000 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
31 Form 4 filings on record, the earliest from Apr 10, 2026, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Chi-Wen Tsai - Officer | Grant or award | Ordinary Shares | 334,000 | $0.00 | - | |
| Chih-Hsiao Chung - Officer | Grant or award | Ordinary Shares | 30,000 | $0.00 | - | |
| Kenneth Hsiang - Officer | Grant or award | Ordinary Shares | 40,000 | $0.00 | - | |
| Chung Lin - Officer | Grant or award | Ordinary Shares | 30,000 | $0.00 | - | |
| Raymond Lo - Officer | Grant or award | Ordinary Shares | 400,000 | $0.00 | - | |
| Hung-Ming Kuo - Officer | Grant or award | Ordinary Shares | 50,000 | $0.00 | - | |
| Du-Tsuen Uang - Officer | Grant or award | Ordinary Shares | 90,000 | $0.00 | - | |
| Hung-Szu Tung - Officer | Grant or award | Ordinary Shares | 400,000 | $0.00 | - | |
| Andrew R. Tang - Director | Grant or award | Ordinary Shares | 85,000 | $0.00 | - | |
| Tien-Szu Chen - Officer | Grant or award | Ordinary Shares | 300,000 | $0.00 | - | |
| Tien-Yue Wu - Director | Grant or award | Ordinary Shares | 600,000 | $0.00 | - | |
 Jeffrey Chen - Director | Grant or award | Ordinary Shares | 300,000 | $0.00 | - | |
| Jeffrey Chen - Director | Gift | Ordinary Shares | 600,000 | $0.00 | - | |
| Jeffrey Chen - Director | Gift | Ordinary Shares | 600,000 | $0.00 | - | |
| Chih-Hsiao Chung - Officer | Option exercise | Ordinary Shares | 292,000 | $41.10 | $12.00M | |
| Chih-Hsiao Chung - Officer | Option exercise | Ordinary Shares | 73,000 | $41.10 | $3.00M | |
| Chih-Hsiao Chung - Officer | Option exercise | Stock Option (Right to Buy) | 292,000 | $0.00 | - | |
| Chih-Hsiao Chung - Officer | Option exercise | Stock Option (Right to Buy) | 73,000 | $0.00 | - | |
| Chung Lin - Officer | Option exercise | Ordinary Shares | 25,000 | $41.10 | $1.03M | |
| Chung Lin - Officer | Option exercise | Ordinary Shares | 10,000 | $98.60 | $986K | |
| Chung Lin - Officer | Option exercise | Stock Option (Right to Buy) | 25,000 | $0.00 | - | |
| Chung Lin - Officer | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $665.00 | $2.00M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $688.00 | $2.06M | |
| Hung Pen Chang - Director | Option exercise | Ordinary Shares | 3,000,000 | $41.10 | $123.30M | |
| Hung Pen Chang - Director | Option exercise | Ordinary Shares | 1,500,000 | $98.60 | $147.90M | |
| Hung Pen Chang - Director | Option exercise | Stock Option (Right to Buy) | 3,000,000 | $0.00 | - | |
| Hung Pen Chang - Director | Option exercise | Stock Option (Right to Buy) | 1,500,000 | $0.00 | - | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 2,000 | $687.00 | $1.37M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $664.00 | $1.99M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 2,000 | $687.00 | $1.37M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $709.00 | $2.13M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $611.00 | $1.83M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 5,000 | $667.00 | $3.33M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 3,000 | $697.00 | $2.09M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 5,000 | $607.00 | $3.04M | |
| Du-Tsuen Uang - Officer | Open-market sale | Ordinary Shares | 5,000 | $617.00 | $3.08M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $538.00 | $4.84M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $590.00 | $5.31M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $630.00 | $5.67M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 2,000 | $653.00 | $1.31M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $483.00 | $4.35M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $477.00 | $4.29M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $505.00 | $4.54M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $560.00 | $5.04M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $563.00 | $5.07M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $506.00 | $4.55M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $473.00 | $4.26M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $463.50 | $4.17M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $466.50 | $4.20M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $487.67 | $4.39M | |
| Tien-Szu Chen - Officer | Open-market sale | Ordinary Shares | 328,000 | $465.11 | $152.55M | |
| Tien-Szu Chen - Officer | Open-market sale | Ordinary Shares | 72,000 | $466.00 | $33.55M | |
| Tien-Szu Chen - Officer | Open-market sale | Ordinary Shares | 50,000 | $467.00 | $23.35M | |
| Tien-Szu Chen - Officer | Open-market sale | Ordinary Shares | 80,000 | $471.00 | $37.68M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $446.00 | $4.01M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $454.00 | $4.09M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $461.50 | $4.15M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $408.33 | $3.67M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $427.00 | $3.84M | |
| Jeffrey Chen - Director | Open-market sale | Ordinary Shares | 9,000 | $432.00 | $3.89M | |
 Chien Shen Chang - Director | Option exercise | Ordinary Shares | 3,000,000 | $41.10 | $123.30M | |
| Chien Shen Chang - Director | Option exercise | Ordinary Shares | 1,500,000 | $99.70 | $149.55M | |
| Chien Shen Chang - Director | Option exercise | Stock Option (Right to Buy) | 3,000,000 | $0.00 | - | |
| Chien Shen Chang - Director | Option exercise | Stock Option (Right to Buy) | 1,500,000 | $0.00 | - |
ASE Technology Holding Co., Ltd. (ASX) had 20 insider filings in the last 90 days, with the most recent on 2026-09-09. The full record for ASX runs to 31 Form 4 filings, the earliest from 2026-04-10. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of ASX were filed in the last 90 days.
9 insider sales of ASX were filed in the last 90 days, totaling $18.18M.
This page tracks ASX Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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