ASX insider trading — ASE Technology Holding Co., Ltd.
Over the last 90 days, insiders at ASE Technology Holding Co., Ltd. (ASX) made 0 open-market purchases worth $0 and 2 open-market sales worth $4.25M, making them net sellers by $4.25M. The largest sale was by Uang Du-Tsuen (Chief Administration Officer), who sold 3,000 shares for $2.26M on Oct 12, 2026.
Updated Oct 16, 2026.
Recent ASX insider transactions
Every Form 4 filed by ASE Technology Holding Co., Ltd. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 12, 2026 | Uang Du-Tsuen | Chief Administration Officer | S · Sale | Direct | 3,000 | $752.00 | $2.26M | Form 4 |
| Sep 22, 2026 | Chang Hung Pen | Director | M · Option exercise | Direct | 300,000 | $98.60 | $29.58M | Form 4 |
| Sep 7, 2026 | Tsai Chi-Wen | Chairman & President, SPIL | A · Grant/award | Direct | 334,000 | — | — | Form 4 |
| Sep 7, 2026 | Chung Chih-Hsiao | GM, ASE Japan & Wuxi Tongzhi | A · Grant/award | Direct | 30,000 | — | — | Form 4 |
| Sep 7, 2026 | Hsiang Kenneth | CEO, ISE Labs | A · Grant/award | Direct | 40,000 | — | — | Form 4 |
| Sep 7, 2026 | Lin Chung | GM, ASE Shanghai & Electronics | A · Grant/award | Direct | 30,000 | — | — | Form 4 |
| Sep 7, 2026 | Lo Raymond | GM TW & Kaohsiung Pkg Facility | A · Grant/award | Direct | 400,000 | — | — | Form 4 |
| Sep 7, 2026 | Kuo Hung-Ming | Principal Accounting Officer | A · Grant/award | Direct | 50,000 | — | — | Form 4 |
| Sep 7, 2026 | Uang Du-Tsuen | Chief Administration Officer | A · Grant/award | Direct | 90,000 | — | — | Form 4 |
| Sep 7, 2026 | Tung Hung-Szu | Chief Financial Officer | A · Grant/award | Direct | 400,000 | — | — | Form 4 |
| Sep 7, 2026 | Tang Andrew R | Director | A · Grant/award | Direct | 85,000 | — | — | Form 4 |
| Sep 7, 2026 | Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | A · Grant/award | Direct | 300,000 | — | — | Form 4 |
| Sep 7, 2026 | Wu Tien-Yue | Director | A · Grant/award | Direct | 600,000 | — | — | Form 4 |
| Sep 7, 2026 | Chen Jeffrey | Director | A · Grant/award | Direct | 300,000 | — | — | Form 4 |
| Sep 7, 2026 | Chen Jeffrey | Director | G · Gift | Direct | 600,000 | — | — | Form 4 |
| Sep 7, 2026 | Chen Jeffrey | Director | G · Gift | Indirect | 600,000 | — | — | Form 4 |
| Aug 13, 2026 | Chung Chih-Hsiao | GM, ASE Japan & Wuxi Tongzhi | M · Option exercise | Direct | 73,000 | $41.10 | $3.00M | Form 4 |
| Aug 12, 2026 | Chung Chih-Hsiao | GM, ASE Japan & Wuxi Tongzhi | M · Option exercise | Direct | 292,000 | $41.10 | $12.00M | Form 4 |
| Jul 29, 2026 | Lin Chung | GM, ASE Shanghai & Electronics | M · Option exercise | Direct | 35,000 | $57.53 | $2.01M | Form 4 |
| Jul 22, 2026 | Uang Du-Tsuen | Chief Administration Officer | S · Sale | Direct | 3,000 | $665.00 | $2.00M | Form 4 |
ASX insider trading FAQ
Are insiders buying ASX stock?
Not on the open market. In the last 90 days, ASE Technology Holding Co., Ltd. insiders made no open-market purchases, and 2 open-market sales totaling $4.25M. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading ASX?
Recent sellers: Uang Du-Tsuen.
Where does ASX insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
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Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.