Insider txns (12m)
71
Stock / equity
ASX ASE Technology Holding Co., Ltd.
ASX (ASE Technology Holding Co., Ltd.) has 71 disclosed insider transactions from 14 insiders in the last 12 months (0 open-market buys, 39 sales, about $960.4M at reported prices) and 0 congressional trades from 0 members of Congress. The most recent disclosure was filed October 14, 2026.
Open-market buys / sales
0 / 39
Congress trades (12m)
0
Distinct filers (12m)
14
Share price
Price and chart by TradingView for ASE Technology Holding Co., Ltd.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
ASX in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
3 people account for the disclosed buying and selling in ASX over the last 12 months; the most active is Chen Tien-Szu with $247M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 39 open-market trades in ASX since Apr 8, 2026, at prices from $381 to $752; the most recent was a sale at $752 on Oct 12, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
Chen JeffreyUang Du-Tsuen
Chen Jeffrey reported 600,000 shares held after the latest filing, against 173,000 at the first on record.
Insiders trading ASX
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| Chen Jeffrey | Director | 26 | 0 | 23 | — | $96.0M | September 7, 2026 |
| Uang Du-Tsuen | Chief Administration Officer | 13 | 0 | 12 | — | $26.6M | October 12, 2026 |
| Chang Hung Pen | Director | 6 | 0 | 0 | — | — | September 22, 2026 |
| Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | 5 | 0 | 4 | — | $247.1M | September 7, 2026 |
| Chung Chih-Hsiao | GM, ASE Japan & Wuxi Tongzhi | 5 | 0 | 0 | — | — | September 7, 2026 |
| Lin Chung | GM, ASE Shanghai & Electronics | 5 | 0 | 0 | — | — | September 7, 2026 |
| Chang Chien Shen | Director | 4 | 0 | 0 | — | — | April 9, 2026 |
| Hsiang Kenneth | CEO, ISE Labs | 1 | 0 | 0 | — | — | September 7, 2026 |
| Kuo Hung-Ming | Principal Accounting Officer | 1 | 0 | 0 | — | — | September 7, 2026 |
| Lo Raymond | GM TW & Kaohsiung Pkg Facility | 1 | 0 | 0 | — | — | September 7, 2026 |
| Tang Andrew R | Director | 1 | 0 | 0 | — | — | September 7, 2026 |
| Tsai Chi-Wen | Chairman & President, SPIL | 1 | 0 | 0 | — | — | September 7, 2026 |
| Tung Hung-Szu | Chief Financial Officer | 1 | 0 | 0 | — | — | September 7, 2026 |
| Wu Tien-Yue | Director | 1 | 0 | 0 | — | — | September 7, 2026 |
What kind of transactions these are 4 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| S | Open-market sale | 39 | 770,000 | $369.7M |
| M | Option exercise or conversion | 18 | 19,400,000 | $590.6M |
| A | Grant or award | 12 | 2,659,000 | — |
| G | Gift | 2 | 1,200,000 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading ASX
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Sheri Biggs | Representative (SC, District 3), Republican | 1 | 0 | 1 | $1,001–$15K | March 18, 2025 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Uang Du-Tsuen | Sell S | October 12, 2026 | October 14, 2026 | 2d | 3,000 | $752 | $2.3M | Form 4 ↗ | ||
| Chang Hung Pen | Option / conversion M | September 22, 2026 | September 24, 2026 | 2d | 300,000 | — | — | derivative | Form 4 ↗ | |
| Chang Hung Pen | Option / conversion M | September 22, 2026 | September 24, 2026 | 2d | 300,000 | $99 | $29.6M | Form 4 ↗ | ||
| Tsai Chi-Wen | Other A | September 7, 2026 | September 9, 2026 | 2d | 334,000 | — | — | Form 4 ↗ | ||
| Chung Chih-Hsiao | Other A | September 7, 2026 | September 9, 2026 | 2d | 30,000 | — | — | Form 4 ↗ | ||
| Hsiang Kenneth | Other A | September 7, 2026 | September 9, 2026 | 2d | 40,000 | — | — | Form 4 ↗ | ||
| Lin Chung | Other A | September 7, 2026 | September 9, 2026 | 2d | 30,000 | — | — | Form 4 ↗ | ||
| Lo Raymond | Other A | September 7, 2026 | September 9, 2026 | 2d | 400,000 | — | — | Form 4 ↗ | ||
| Kuo Hung-Ming | Other A | September 7, 2026 | September 9, 2026 | 2d | 50,000 | — | — | Form 4 ↗ | ||
| Uang Du-Tsuen | Other A | September 7, 2026 | September 9, 2026 | 2d | 90,000 | — | — | Form 4 ↗ | ||
| Tung Hung-Szu | Other A | September 7, 2026 | September 9, 2026 | 2d | 400,000 | — | — | Form 4 ↗ | ||
| Tang Andrew R | Other A | September 7, 2026 | September 9, 2026 | 2d | 85,000 | — | — | Form 4 ↗ | ||
| Chen Tien-Szu | Other A | September 7, 2026 | September 9, 2026 | 2d | 300,000 | — | — | Form 4 ↗ | ||
| Wu Tien-Yue | Other A | September 7, 2026 | September 9, 2026 | 2d | 600,000 | — | — | Form 4 ↗ | ||
| Chen Jeffrey | Other G | September 7, 2026 | September 9, 2026 | 2d | 600,000 | — | — | indirect | Form 4 ↗ | |
| Chen Jeffrey | Other G | September 7, 2026 | September 9, 2026 | 2d | 600,000 | — | — | Form 4 ↗ | ||
| Chen Jeffrey | Other A | September 7, 2026 | September 9, 2026 | 2d | 300,000 | — | — | Form 4 ↗ | ||
| Chung Chih-Hsiao | Option / conversion M | August 13, 2026 | August 19, 2026 | 6d | 73,000 | — | — | latederivative | Form 4 ↗ | |
| Chung Chih-Hsiao | Option / conversion M | August 12, 2026 | August 19, 2026 | 7d | 292,000 | — | — | latederivative | Form 4 ↗ | |
| Chung Chih-Hsiao | Option / conversion M | August 13, 2026 | August 19, 2026 | 6d | 73,000 | $41 | $3.0M | late | Form 4 ↗ | |
| Chung Chih-Hsiao | Option / conversion M | August 12, 2026 | August 19, 2026 | 7d | 292,000 | $41 | $12.0M | late | Form 4 ↗ | |
| Lin Chung | Option / conversion M | July 29, 2026 | July 31, 2026 | 2d | 10,000 | — | — | derivative | Form 4 ↗ | |
| Lin Chung | Option / conversion M | July 29, 2026 | July 31, 2026 | 2d | 25,000 | — | — | derivative | Form 4 ↗ | |
| Lin Chung | Option / conversion M | July 29, 2026 | July 31, 2026 | 2d | 10,000 | $99 | $986K | Form 4 ↗ | ||
| Lin Chung | Option / conversion M | July 29, 2026 | July 31, 2026 | 2d | 25,000 | $41 | $1.0M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | July 22, 2026 | July 24, 2026 | 2d | 3,000 | $665 | $2.0M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | July 15, 2026 | July 17, 2026 | 2d | 3,000 | $688 | $2.1M | Form 4 ↗ | ||
| Chang Hung Pen | Option / conversion M | July 13, 2026 | July 15, 2026 | 2d | 1,500,000 | — | — | derivative | Form 4 ↗ | |
| Chang Hung Pen | Option / conversion M | July 13, 2026 | July 15, 2026 | 2d | 3,000,000 | — | — | derivative | Form 4 ↗ | |
| Chang Hung Pen | Option / conversion M | July 13, 2026 | July 15, 2026 | 2d | 1,500,000 | $99 | $147.9M | Form 4 ↗ | ||
| Chang Hung Pen | Option / conversion M | July 13, 2026 | July 15, 2026 | 2d | 3,000,000 | $41 | $123.3M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | July 6, 2026 | July 8, 2026 | 2d | 2,000 | $687 | $1.4M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | July 1, 2026 | July 2, 2026 | 1d | 3,000 | $709 | $2.1M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 30, 2026 | July 2, 2026 | 2d | 2,000 | $687 | $1.4M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 30, 2026 | July 2, 2026 | 2d | 3,000 | $664 | $2.0M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 23, 2026 | June 23, 2026 | 0d | 3,000 | $697 | $2.1M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 22, 2026 | June 23, 2026 | 1d | 5,000 | $667 | $3.3M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 18, 2026 | June 23, 2026 | 5d | 3,000 | $611 | $1.8M | late | Form 4 ↗ | |
| Uang Du-Tsuen | Sell S | June 3, 2026 | June 3, 2026 | 0d | 5,000 | $617 | $3.1M | Form 4 ↗ | ||
| Uang Du-Tsuen | Sell S | June 1, 2026 | June 3, 2026 | 2d | 5,000 | $607 | $3.0M | Form 4 ↗ | ||
| Chen Jeffrey | Sell S | May 27, 2026 | May 27, 2026 | 0d | 2,000 | $653 | $1.3M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 26, 2026 | May 27, 2026 | 1d | 9,000 | $630 | $5.7M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 25, 2026 | May 27, 2026 | 2d | 9,000 | $590 | $5.3M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 22, 2026 | May 27, 2026 | 5d | 9,000 | $538 | $4.8M | lateindirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 21, 2026 | May 21, 2026 | 0d | 9,000 | $505 | $4.5M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 20, 2026 | May 21, 2026 | 1d | 9,000 | $477 | $4.3M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 19, 2026 | May 21, 2026 | 2d | 9,000 | $483 | $4.3M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 18, 2026 | May 18, 2026 | 0d | 9,000 | $506 | $4.6M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 15, 2026 | May 18, 2026 | 3d | 9,000 | $563 | $5.1M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | May 14, 2026 | May 18, 2026 | 4d | 9,000 | $560 | $5.0M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 24, 2026 | April 28, 2026 | 4d | 9,000 | $473 | $4.3M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 23, 2026 | April 23, 2026 | 0d | 9,000 | $488 | $4.4M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 22, 2026 | April 23, 2026 | 1d | 9,000 | $467 | $4.2M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 21, 2026 | April 23, 2026 | 2d | 9,000 | $464 | $4.2M | indirect | Form 4 ↗ | |
| Chen Tien-Szu | Sell S | April 20, 2026 | April 22, 2026 | 2d | 80,000 | $471 | $37.7M | Form 4 ↗ | ||
| Chen Tien-Szu | Sell S | April 20, 2026 | April 22, 2026 | 2d | 50,000 | $467 | $23.4M | Form 4 ↗ | ||
| Chen Tien-Szu | Sell S | April 20, 2026 | April 22, 2026 | 2d | 72,000 | $466 | $33.6M | Form 4 ↗ | ||
| Chen Tien-Szu | Sell S | April 20, 2026 | April 22, 2026 | 2d | 328,000 | $465 | $152.6M | Form 4 ↗ | ||
| Chen Jeffrey | Sell S | April 20, 2026 | April 20, 2026 | 0d | 9,000 | $462 | $4.2M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 17, 2026 | April 20, 2026 | 3d | 9,000 | $454 | $4.1M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 16, 2026 | April 20, 2026 | 4d | 9,000 | $446 | $4.0M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 15, 2026 | April 15, 2026 | 0d | 9,000 | $432 | $3.9M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 14, 2026 | April 15, 2026 | 1d | 9,000 | $427 | $3.8M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 13, 2026 | April 15, 2026 | 2d | 9,000 | $408 | $3.7M | indirect | Form 4 ↗ | |
| Chang Chien Shen | Option / conversion M | April 9, 2026 | April 13, 2026 | 4d | 1,500,000 | — | — | derivative | Form 4 ↗ | |
| Chang Chien Shen | Option / conversion M | April 9, 2026 | April 13, 2026 | 4d | 3,000,000 | — | — | derivative | Form 4 ↗ | |
| Chang Chien Shen | Option / conversion M | April 9, 2026 | April 13, 2026 | 4d | 1,500,000 | $100 | $149.6M | Form 4 ↗ | ||
| Chang Chien Shen | Option / conversion M | April 9, 2026 | April 13, 2026 | 4d | 3,000,000 | $41 | $123.3M | Form 4 ↗ | ||
| Chen Jeffrey | Sell S | April 10, 2026 | April 10, 2026 | 0d | 9,000 | $387 | $3.5M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 9, 2026 | April 10, 2026 | 1d | 9,000 | $388 | $3.5M | indirect | Form 4 ↗ | |
| Chen Jeffrey | Sell S | April 8, 2026 | April 10, 2026 | 2d | 9,000 | $381 | $3.4M | indirect | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Sheri Biggs | Sell | March 18, 2025 | October 5, 2025 | 201d | — | — | $1,001–$15K | latespouse | House PTR ↗ |
Related stocks
Tickers traded by the same people who traded ASX, by number of filers in common. It shows overlap in public filings and nothing else.
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Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | October 5, 2025 | October 5, 2025 | House Clerk search |
| SEC EDGAR, Form 4 | 33 | 71 | April 10, 2026 | October 14, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.