ASX
ASE Technology Holding Co., Ltd. · Technology · Market cap $185.1B(Price slightly stale)
Insiders sold $18.2M net in the last 90 days ·1 seller, 0 buyers· latest Form 4 filed Jul 24, 2026
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$367.5M
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Latest filing
Sep 9, 2026
Uang Du-Tsuen
ASE Technology Holding Co., Ltd. (ASX) has 31 SEC Form 4 filings (60 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Sep 9, 2026.
Inside the rolling window, 3 insiders at ASE Technology Holding Co., Ltd. reported no open-market purchases and 34 open-market sales totaling $367.5M. The most active filer is Director Chen Jeffrey with 23 filings. Insiders have net sold $367.5M over the trailing 6 months. The most recent open-market filing is a sale of 3,000 shares by Chief Administration Officer Uang Du-Tsuen, dated Jul 22, 2026, worth $2.0M.
- Industry:Semiconductors
- CEO:Jason Chang
- Employees:96,436
- HQ:Kaohsiung, KH, TW
- IPO:2000-10-02
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Administration Officer | Sale | 3,000 | $2.0M | Jul 24 | +13.0% | SEC ↗ | |
| Chief Administration Officer | Sale | 3,000 | $2.1M | Jul 17 | +8.4% | SEC ↗ | |
| Chief Administration Officer | Sale | 2,000 | $1.4M | Jul 8 | +4.3% | SEC ↗ | |
| Chief Administration Officer | Sale | 5,000 | $3.4M | Jul 2 | -0.6% | SEC ↗ | |
| Chief Administration Officer | Sale | 3,000 | $2.1M | Jul 2 | -0.6% | SEC ↗ | |
| Chief Administration Officer | Sale | 3,000 | $1.8M | Jun 23 | +4.7% | SEC ↗ | |
| Chief Administration Officer | Sale | 5,000 | $3.3M | Jun 23 | +4.7% | SEC ↗ | |
| Chief Administration Officer | Sale | 3,000 | $2.1M | Jun 23 | +4.7% | SEC ↗ | |
Uang Du-TsuenFirst filing | Chief Administration Officer | Sale | 5,000 | $3.0M | Jun 3 | +4.3% | SEC ↗ |
Uang Du-TsuenFirst filing | Chief Administration Officer | Sale | 5,000 | $3.1M | Jun 3 | — | SEC ↗ |
| Director | Sale | 9,000 | $4.8M | May 27 | — | SEC ↗ | |
| Director | Sale | 9,000 | $5.3M | May 27 | — | SEC ↗ | |
| Director | Sale | 9,000 | $5.7M | May 27 | — | SEC ↗ | |
| Director | Sale | 2,000 | $1.3M | May 27 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.3M | May 21 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.3M | May 21 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.5M | May 21 | — | SEC ↗ | |
| Director | Sale | 9,000 | $5.0M | May 18 | — | SEC ↗ | |
| Director | Sale | 9,000 | $5.1M | May 18 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.6M | May 18 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.3M | Apr 28 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.2M | Apr 23 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.2M | Apr 23 | — | SEC ↗ | |
| Director | Sale | 9,000 | $4.4M | Apr 23 | — | SEC ↗ | |
Chen Tien-SzuFirst filing | GM, ASE Inc. Chung-Li Branch | Sale | 530,000 | $247.1M | Apr 22 | — | SEC ↗ |
Congress trading ASX 2 all-time
- RRep. Sheri BiggsSale$1,001 - $15,0002025-03-18
- RRep. John Henry RutherfordSale$1,001 - $15,0002022-03-16
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does ASX have?
ASE Technology Holding Co., Ltd. (ASX) has 31 SEC Form 4 filings (60 transaction rows) in the rolling 365-day window, disclosed by 3 distinct insiders. Most recent filing: Sep 9, 2026.
When was the most recent SEC Form 4 filing for ASX?
The most recent Form 4 filing for ASX on Tracefour is dated Sep 9, 2026.
Who is the most active insider at ASX?
The most active SEC Form 4 filer at ASX in the rolling window is Director Chen Jeffrey, with 23 filings.
What is the net insider flow at ASX over the last 6 months?
Over the trailing 180 days, insiders at ASX have net sold $367.5M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at ASX in the current window?
Inside the rolling window, insiders at ASX bought $0 and sold $367.5M based on SEC Form 4 filings.
Can I get alerts for ASX insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at ASE Technology Holding Co., Ltd. (ASX). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
ASE Technology Holding Co., Ltd. is in the Technology sector.