ASE Technology Holding's top three insider shareholders as of August 04, 2026 are Chien Shen Chang (Director, 6.25Mn shares), Tien-Szu Chen (Gm, Ase Inc. Chung Li Branch, 2.25Mn shares), Jeffrey Chen (Director, 92.00K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Chien Shen Chang | Director | 6,247,647 | 0 | 6,247,647 | 72.7% | 13 Apr, 2026 |
| 2 | Tien-Szu Chen | Gm, Ase Inc. Chung Li Branch | 2,251,821 | 0 | 2,251,821 | 26.2% | 22 Apr, 2026 |
| 3 | Jeffrey Chen | Director | 0 | 92,000 | 92,000 | 1.1% | 23 Apr, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 21 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $463.50 | $4.17Mn | 110,000 | Indirect |
| 22 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $466.50 | $4.20Mn | 101,000 | Indirect |
| 23 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $487.67 | $4.39Mn | 92,000 | Indirect |
| 20 Apr, 2026 | Tien-Szu Chen | Gm, Ase Inc. Chung Li Branch | Disposed S | 328,000 | $465.11 | $152.55Mn | 2,453,821 | Direct |
| 20 Apr, 2026 | Tien-Szu Chen | Gm, Ase Inc. Chung Li Branch | Disposed S | 72,000 | $466.00 | $33.55Mn | 2,381,821 | Direct |
| 20 Apr, 2026 | Tien-Szu Chen | Gm, Ase Inc. Chung Li Branch | Disposed S | 50,000 | $467.00 | $23.35Mn | 2,331,821 | Direct |
| 20 Apr, 2026 | Tien-Szu Chen | Gm, Ase Inc. Chung Li Branch | Disposed S | 80,000 | $471.00 | $37.68Mn | 2,251,821 | Direct |
| 16 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $446.00 | $4.01Mn | 137,000 | Indirect |
| 17 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $454.00 | $4.09Mn | 128,000 | Indirect |
| 20 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $461.50 | $4.15Mn | 119,000 | Indirect |
| 13 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $408.33 | $3.67Mn | 164,000 | Indirect |
| 14 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $427.00 | $3.84Mn | 155,000 | Indirect |
| 15 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $432.00 | $3.89Mn | 146,000 | Indirect |
| 09 Apr, 2026 | Chien Shen Chang | Director | Acquired M | 3,000,000 | $41.10 | $123.30Mn | 4,747,647 | Direct |
| 09 Apr, 2026 | Chien Shen Chang | Director | Acquired M | 1,500,000 | $99.70 | $149.55Mn | 6,247,647 | Direct |
| 09 Apr, 2026 | Chien Shen Chang | Director | Disposed M | 3,000,000 | $0.00 | $0 | 0 | Direct |
| 09 Apr, 2026 | Chien Shen Chang | Director | Disposed M | 1,500,000 | $0.00 | $0 | 1,500,000 | Direct |
| 08 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $380.50 | $3.42Mn | 191,000 | Indirect |
| 09 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $388.00 | $3.49Mn | 182,000 | Indirect |
| 10 Apr, 2026 | Jeffrey Chen | Director | Disposed S | 9,000 | $387.00 | $3.48Mn | 173,000 | Indirect |