ASE Technology Holding Co., Ltd. (ASX) Insider Trading
Over the last 3 months, ASX insiders made 0 open-market buys and 8 sales, a net sale of -$17.0M (SEC Form 4). Over the last 6 months, 286 institutions increased and 264 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
8
Net (3m)
-$17.0M
Insider trades by month Buys Sells
Apr
May
Jun
Jul
Context3-month price -1.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | Chung Chih-Hsiaoofficer: GM, ASE Japan & Wuxi Tongzhi | Option | 73,000 | $41.10 |
| Aug 19, 2026 | Chung Chih-Hsiaoofficer: GM, ASE Japan & Wuxi Tongzhi | Option | 292,000 | $41.10 |
| Jul 31, 2026 | Lin Chungofficer: GM, ASE Shanghai & Electronics | Option | 10,000 | $98.60 |
| Jul 31, 2026 | Lin Chungofficer: GM, ASE Shanghai & Electronics | Option | 25,000 | $41.10 |
| Jul 24, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 3,000 | $665.00 |
| Jul 17, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 3,000 | $688.00 |
| Jul 15, 2026 | Chang Hung Pendirector | Option | 1,500,000 | $98.60 |
| Jul 15, 2026 | Chang Hung Pendirector | Option | 3,000,000 | $41.10 |
| Jul 8, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 2,000 | $687.00 |
| Jul 2, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 2,000 | $687.00 |
| Jul 2, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 3,000 | $664.00 |
| Jun 23, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 5,000 | $667.00 |
| Jun 23, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 3,000 | $611.00 |
| Jun 3, 2026 | Uang Du-Tsuenofficer: Chief Administration Officer | Sell | 5,000 | $607.00 |
| May 27, 2026 | Chen Jeffreydirector | Sell | 2,000 | $653.00 |
| May 27, 2026 | Chen Jeffreydirector | Sell | 9,000 | $538.00 |
| May 21, 2026 | Chen Jeffreydirector | Sell | 9,000 | $483.00 |
| May 18, 2026 | Chen Jeffreydirector | Sell | 9,000 | $560.00 |
| Apr 28, 2026 | Chen Jeffreydirector | Sell | 9,000 | $473.00 |
| Apr 23, 2026 | Chen Jeffreydirector | Sell | 9,000 | $463.50 |
| Apr 22, 2026 | Chen Tien-Szuofficer: GM, ASE Inc. Chung-Li Branch | Sell | 328,000 | $465.11 |
| Apr 22, 2026 | Chen Tien-Szuofficer: GM, ASE Inc. Chung-Li Branch | Sell | 80,000 | $471.00 |
| Apr 22, 2026 | Chen Tien-Szuofficer: GM, ASE Inc. Chung-Li Branch | Sell | 50,000 | $467.00 |
| Apr 22, 2026 | Chen Tien-Szuofficer: GM, ASE Inc. Chung-Li Branch | Sell | 72,000 | $466.00 |
| Apr 20, 2026 | Chen Jeffreydirector | Sell | 9,000 | $446.00 |
| Apr 15, 2026 | Chen Jeffreydirector | Sell | 9,000 | $408.33 |
| Apr 13, 2026 | Chang Chien Shendirector | Option | 3,000,000 | $41.10 |
| Apr 13, 2026 | Chang Chien Shendirector | Option | 1,500,000 | $99.70 |
| Apr 10, 2026 | Chen Jeffreydirector | Sell | 9,000 | $380.50 |
Source: ASX SEC Form 4 filings, latest Aug 19, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ASX positions over the last 6 months (SEC Form 13F).
Increased
286
New positions
236
Reduced
264
Sold out
34
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 26.3M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 22.2M | May 13, 2026 |
| LAZARD ASSET MANAGEMENT LLC | Reduced | 13.5M | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | Increased | 9.4M | Aug 14, 2026 |
| UBS GROUP AG | Increased | 9.3M | May 5, 2026 |
| GOLDMAN SACHS GROUP INC | Increased | 8.3M | Aug 14, 2026 |
| LAZARD ASSET MANAGEMENT LLC | Reduced | 8.0M | Aug 14, 2026 |
| UBS Group AG | Reduced | 7.8M | Aug 13, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 7.4M | May 13, 2026 |
| BANK OF AMERICA CORP /DE/ | Reduced | 6.8M | May 18, 2026 |
| MORGAN STANLEY | Reduced | 6.7M | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 6.0M | Mar 25, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 5.8M | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 5.8M | May 15, 2026 |
| MORGAN STANLEY | Reduced | 5.8M | Aug 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.