The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 15, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 3K | $688.00 | $2.1M |
| Jul 13, 2026 | Chang Hung Pen | Director | Option exercise(M) | 1.5M | — | $0 |
| Jul 13, 2026 | Chang Hung Pen | Director | Option exercise(M) | 3.0M | — | $0 |
| Jul 13, 2026 | Chang Hung Pen | Director | Option exercise(M) | 1.5M | $98.60 | $147.9M |
| Jul 13, 2026 | Chang Hung Pen | Director | Option exercise(M) | 3.0M | $41.10 | $123.3M |
| Jul 6, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 2K | $687.00 | $1.4M |
| Jul 1, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 3K | $709.00 | $2.1M |
| Jun 30, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 3K | $664.00 | $2.0M |
| Jun 30, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 2K | $687.00 | $1.4M |
| Jun 23, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 3K | $697.00 | $2.1M |
| Jun 22, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 5K | $667.00 | $3.3M |
| Jun 18, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 3K | $611.00 | $1.8M |
| Jun 3, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 5K | $617.00 | $3.1M |
| Jun 1, 2026 | Uang Du-Tsuen | Chief Administration Officer | Sell(S) | 5K | $607.00 | $3.0M |
| May 27, 2026 | Chen Jeffrey | Director | Sell(S) | 2K | $653.00 | $1.3M |
| May 26, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $630.00 | $5.7M |
| May 25, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $590.00 | $5.3M |
| May 22, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $538.00 | $4.8M |
| May 21, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $505.00 | $4.5M |
| May 20, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $477.00 | $4.3M |
| May 19, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $483.00 | $4.3M |
| May 18, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $506.00 | $4.6M |
| May 15, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $563.00 | $5.1M |
| May 14, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $560.00 | $5.0M |
| Apr 24, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $473.00 | $4.3M |
| Apr 23, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $487.67 | $4.4M |
| Apr 22, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $466.50 | $4.2M |
| Apr 21, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $463.50 | $4.2M |
| Apr 20, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $461.50 | $4.2M |
| Apr 20, 2026 | Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | Sell(S) | 328K | $465.11 | $152.6M |
| Apr 20, 2026 | Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | Sell(S) | 72K | $466.00 | $33.6M |
| Apr 20, 2026 | Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | Sell(S) | 50K | $467.00 | $23.4M |
| Apr 20, 2026 | Chen Tien-Szu | GM, ASE Inc. Chung-Li Branch | Sell(S) | 80K | $471.00 | $37.7M |
| Apr 17, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $454.00 | $4.1M |
| Apr 16, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $446.00 | $4.0M |
| Apr 15, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $432.00 | $3.9M |
| Apr 14, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $427.00 | $3.8M |
| Apr 13, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $408.33 | $3.7M |
| Apr 10, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $387.00 | $3.5M |
| Apr 9, 2026 | Chang Chien Shen | Director | Option exercise(M) | 3.0M | $41.10 | $123.3M |
| Apr 9, 2026 | Chang Chien Shen | Director | Option exercise(M) | 1.5M | $99.70 | $149.6M |
| Apr 9, 2026 | Chang Chien Shen | Director | Option exercise(M) | 3.0M | — | $0 |
| Apr 9, 2026 | Chang Chien Shen | Director | Option exercise(M) | 1.5M | — | $0 |
| Apr 9, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $388.00 | $3.5M |
| Apr 8, 2026 | Chen Jeffrey | Director | Sell(S) | 9K | $380.50 | $3.4M |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-01-04 → 2026-07-18. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).