As of the latest Form 4 filed Jul 8, 2026.
What ASE Industrial Holding Co Ltd ADR insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 38 most recent filings for ASX.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-08 | 2026-07-06 | Uang Du-Tsuen Chief Administration Officer | SSale | −2.00K | $687.00 | $1.37M | No | Form 4 ↗ |
| 2026-07-02 | 2026-07-01 | Uang Du-Tsuen Chief Administration Officer | SSale | −3.00K | $709.00 | $2.13M | No | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | Uang Du-Tsuen, Chief Administration Officer | SSale | −2.00K | $687.00 | $1.37M | No | Form 4 ↗ |
| 2026-07-02 | 2026-06-30 | Uang Du-Tsuen, Chief Administration Officer | SSale | −3.00K | $664.00 | $1.99M | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-23 | Uang Du-Tsuen Chief Administration Officer | SSale | −3.00K | $697.00 | $2.09M | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-22 | Uang Du-Tsuen, Chief Administration Officer | SSale | −5.00K | $667.00 | $3.33M | No | Form 4 ↗ |
| 2026-06-23 | 2026-06-18 | Uang Du-Tsuen, Chief Administration Officer | SSale | −3.00K | $611.00 | $1.83M | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-03 | Uang Du-Tsuen Chief Administration Officer | SSale | −5.00K | $617.00 | $3.08M | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-01 | Uang Du-Tsuen, Chief Administration Officer | SSale | −5.00K | $607.00 | $3.04M | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-27 | Chen Jeffrey Director | SSale | −2.00K | $653.00 | $1.31M | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-26 | Chen Jeffrey, Director | SSale | −9.00K | $630.00 | $5.67M | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-25 | Chen Jeffrey, Director | SSale | −9.00K | $590.00 | $5.31M | No | Form 4 ↗ |
| 2026-05-27 | 2026-05-22 | Chen Jeffrey, Director | SSale | −9.00K | $538.00 | $4.84M | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-21 | Chen Jeffrey Director | SSale | −9.00K | $505.00 | $4.54M | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-20 | Chen Jeffrey, Director | SSale | −9.00K | $477.00 | $4.29M | No | Form 4 ↗ |
| 2026-05-21 | 2026-05-19 | Chen Jeffrey, Director | SSale | −9.00K | $483.00 | $4.35M | No | Form 4 ↗ |
| 2026-05-18 | 2026-05-18 | Chen Jeffrey Director | SSale | −9.00K | $506.00 | $4.55M | No | Form 4 ↗ |
| 2026-05-18 | 2026-05-15 | Chen Jeffrey, Director | SSale | −9.00K | $563.00 | $5.07M | No | Form 4 ↗ |
| 2026-05-18 | 2026-05-14 | Chen Jeffrey, Director | SSale | −9.00K | $560.00 | $5.04M | No | Form 4 ↗ |
| 2026-04-28 | 2026-04-24 | Chen Jeffrey Director | SSale | −9.00K | $473.00 | $4.26M | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-23 | Chen Jeffrey Director | SSale | −9.00K | $487.67 | $4.39M | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-22 | Chen Jeffrey, Director | SSale | −9.00K | $466.50 | $4.20M | No | Form 4 ↗ |
| 2026-04-23 | 2026-04-21 | Chen Jeffrey, Director | SSale | −9.00K | $463.50 | $4.17M | No | Form 4 ↗ |
| 2026-04-22 | 2026-04-20 | Chen Tien-Szu GM, ASE Inc. Chung-Li Branch | SSale | −80.0K | $471.00 | $37.7M | No | Form 4 ↗ |
| 2026-04-22 | 2026-04-20 | Chen Tien-Szu, GM, ASE Inc. Chung-Li Branch | SSale | −50.0K | $467.00 | $23.4M | No | Form 4 ↗ |
| 2026-04-22 | 2026-04-20 | Chen Tien-Szu, GM, ASE Inc. Chung-Li Branch | SSale | −72.0K | $466.00 | $33.6M | No | Form 4 ↗ |
| 2026-04-22 | 2026-04-20 | Chen Tien-Szu, GM, ASE Inc. Chung-Li Branch | SSale | −328K | $465.11 | $153M | No | Form 4 ↗ |
| 2026-04-20 | 2026-04-20 | Chen Jeffrey Director | SSale | −9.00K | $461.50 | $4.15M | No | Form 4 ↗ |
| 2026-04-20 | 2026-04-17 | Chen Jeffrey, Director | SSale | −9.00K | $454.00 | $4.09M | No | Form 4 ↗ |
| 2026-04-20 | 2026-04-16 | Chen Jeffrey, Director | SSale | −9.00K | $446.00 | $4.01M | No | Form 4 ↗ |
| 2026-04-15 | 2026-04-15 | Chen Jeffrey Director | SSale | −9.00K | $432.00 | $3.89M | No | Form 4 ↗ |
| 2026-04-15 | 2026-04-14 | Chen Jeffrey, Director | SSale | −9.00K | $427.00 | $3.84M | No | Form 4 ↗ |
| 2026-04-15 | 2026-04-13 | Chen Jeffrey, Director | SSale | −9.00K | $408.33 | $3.67M | No | Form 4 ↗ |
| 2026-04-13 | 2026-04-09 | Chang Chien Shen Director | MExercise | +1.50M | $99.70 | $150M | No | Form 4 ↗ |
| 2026-04-13 | 2026-04-09 | Chang Chien Shen, Director | MExercise | +3.00M | $41.10 | $123M | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-10 | Chen Jeffrey Director | SSale | −9.00K | $387.00 | $3.48M | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-09 | Chen Jeffrey, Director | SSale | −9.00K | $388.00 | $3.49M | No | Form 4 ↗ |
| 2026-04-10 | 2026-04-08 | Chen Jeffrey, Director | SSale | −9.00K | $380.50 | $3.42M | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also ASX’s full analysis or the market-wide insider trading feed. The tabs above jump to ASX’s other SEC data.
Source: SEC Form 4 filings for ASX, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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