ASE Technology Holding Co., Ltd. Insider Trading Activity
Every SEC Form 4 insider transaction reported for ASE Technology Holding Co., Ltd. (ASX), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are ASX insiders buying or selling?
In the last 12 months, ASE Technology Holding Co., Ltd. insiders reported 0 open-market purchases ($0) and 16 sales ($369.7M) — net selling of $369.7M. Since April 2026, Trabud has recorded 16 Form 4 filings for ASX: 0 buys ($0) and 16 sells ($369.7M).
Source: SEC EDGAR Form 4
What stands out
- No ASE Technology Holding Co., Ltd. insider made an open-market purchase in the last 12 months; the 16 reported open-market sales totaled $369.7M.
Key Statistics (April 2026 – Oct 14, 2026)
Total Form 4 filings
16
SEC EDGAR
Insider filers
3
Insider buys (0)
$0
Insider sells (16)
$369.7M
Insider sentiment
Net sellingNet insider flow of $369.7M in net selling since April 2026, and $369.7M in net selling over the last 12 months.
Recent ASX insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 3.0K | $752.00 | $2.3M | SEC ↗ |
| Jul 24, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 3.0K | $665.00 | $2.0M | SEC ↗ |
| Jul 17, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 3.0K | $688.00 | $2.1M | SEC ↗ |
| Jul 8, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 2.0K | $687.00 | $1.4M | SEC ↗ |
| Jul 2, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 8.0K | $686.63 | $5.5M | SEC ↗ |
| Jun 23, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 11.0K | $659.91 | $7.3M | SEC ↗ |
| Jun 3, 2026 | Du-Tsuen Uang | Chief Administration Officer | Sale | 10.0K | $612.00 | $6.1M | SEC ↗ |
| May 27, 2026 | Jeffrey Chen | Director | Sale | 29.0K | $590.62 | $17.1M | SEC ↗ |
| May 21, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $488.33 | $13.2M | SEC ↗ |
| May 18, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $543.00 | $14.7M | SEC ↗ |
| Apr 28, 2026 | Jeffrey Chen | Director | Sale | 9.0K | $473.00 | $4.3M | SEC ↗ |
| Apr 23, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $472.56 | $12.8M | SEC ↗ |
| Apr 22, 2026 | Tien-Szu Chen | GM, ASE Inc. Chung-Li Branch | Sale | 530.0K | $466.30 | $247.1M | SEC ↗ |
| Apr 20, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $453.83 | $12.3M | SEC ↗ |
| Apr 15, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $422.44 | $11.4M | SEC ↗ |
| Apr 10, 2026 | Jeffrey Chen | Director | Sale | 27.0K | $385.17 | $10.4M | SEC ↗ |
Showing the 16 most recent of 16 Form 4 filings for ASE Technology Holding Co., Ltd..
Most active ASX insiders
- Jeffrey Chen8 filings
- Du-Tsuen Uang7 filings
- Tien-Szu Chen1 filing
Ask anything about ASX insider activity
Use Trabud's AI agent to query ASE Technology Holding Co., Ltd.'s Form 4 history in plain English — "Show me ASX CEO purchases this year" or compare it against any other ticker.
Open the AI agentASX insider trading FAQ
Are ASE Technology Holding Co., Ltd. insiders buying or selling?
In the last 12 months, ASE Technology Holding Co., Ltd. insiders reported 0 open-market purchases ($0) and 16 sales ($369.7M) — net selling of $369.7M. Since April 2026, Trabud has recorded 16 Form 4 filings for ASX: 0 buys ($0) and 16 sells ($369.7M). Over the full record that is net selling of $369.7M.
How many insiders trade ASX stock?
3 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for ASE Technology Holding Co., Ltd.. The most recent filing was accepted on Oct 14, 2026.
Where does Trabud get ASX insider trading data?
All ASX insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.