As of September 12, 2026, Alpha & Omega Semiconductor's top three insider holders are Mike F Chang (Director, 3.70Mn shares), Stephen Chunping Chang (Chief Executive Officer, 634.07K shares), Mike F Chang (Chairman Of Board, 560.54K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Mike F Chang | Director, TenPercentOwner | 0 | 3,698,839 | 3,698,839 | 77.2% | 11 Sep, 2026 |
| 2 | Yifan Liang | Cfo And Corp Secretary | 269,403 | 0 | 269,403 | 5.6% | 30 Apr, 2026 |
| 3 | Yueh-Se Ho | Chief Operating Officer | 193,592 | 0 | 193,592 | 4.0% | 15 Nov, 2021 |
| 4 | Bing Xue | Evp Ww Sales Bus Development | 122,785 | 0 | 122,785 | 2.6% | 17 Jul, 2026 |
| 5 | Stephen Chunping Chang | Chief Executive Officer | 0 | 100,947 | 100,947 | 2.1% | 11 Sep, 2026 |
| 6 | Wenjun Li | Chief Operating Officer | 86,558 | 0 | 86,558 | 1.8% | 25 Mar, 2026 |
| 7 | King Owyang | Director | 75,256 | 0 | 75,256 | 1.6% | 12 Nov, 2025 |
| 8 | Michael L Pfeiffer | Director | 71,294 | 0 | 71,294 | 1.5% | 12 Nov, 2025 |
| 9 | Michael J Salameh | Director | 64,824 | 0 | 64,824 | 1.4% | 12 Nov, 2025 |
| 10 | Lucas S. Chang | Director | 30,885 | 0 | 30,885 | 0.6% | 12 Nov, 2025 |
| 11 | Claudia Chen | Director | 28,192 | 0 | 28,192 | 0.6% | 26 May, 2026 |
| 12 | Hanqing Li | Director | 23,800 | 0 | 23,800 | 0.5% | 12 Nov, 2025 |
| 13 | So-Yeon Jeong | Director | 23,800 | 0 | 23,800 | 0.5% | 12 Nov, 2025 |
| 14 | Joshua C. Chien | Director | 1,368 | 0 | 1,368 | 0.0% | 21 Jul, 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 |
|---|---|---|---|---|---|---|---|---|
| 24 Aug, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 100,947 | $0.00 | $0 | 3,698,839 | Indirect |
| 24 Aug, 2026 | Stephen Chunping Chang | Chief Executive Officer | Acquired G | 100,947 | $0.00 | $0 | 100,947 | Indirect |
| 13 Aug, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 3,000,000 | $0.00 | $0 | 560,540 | Direct |
| 20 Jul, 2026 | Joshua C. Chien | Director | Acquired A | 1,368 | $0.00 | $0 | 1,368 | Direct |
| 16 Jul, 2026 | Bing Xue | Evp Ww Sales Bus Development | Disposed S | 875 | $33.99 | $29.74K | 122,785 | Direct |
| 13 Jul, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 23,754 | $0.00 | $0 | 3,560,540 | Direct |
| 16 Jun, 2026 | Bing Xue | Evp Ww Sales Bus Development | Disposed S | 4,916 | $47.09 | $231.49K | 123,660 | Direct |
| 01 Jun, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 30,000 | $0.00 | $0 | 3,584,294 | Direct |
| 26 May, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 39,780 | $0.00 | $0 | 3,614,294 | Direct |
| 22 May, 2026 | Mike F Chang | Director, TenPercentOwner | Disposed G | 736,252 | $0.00 | $0 | 3,654,074 | Direct |
| 21 May, 2026 | Stephen Chunping Chang | Chief Executive Officer | Disposed G | 2,000 | $0.00 | $0 | 634,070 | Direct |
| 22 May, 2026 | Claudia Chen | Director | Disposed S | 3,844 | $39.47 | $151.74K | 28,409 | Direct |
| 22 May, 2026 | Claudia Chen | Director | Disposed S | 217 | $40.54 | $8.80K | 28,192 | Direct |
| 18 May, 2026 | Bing Xue | Evp Ww Sales Bus Development | Disposed S | 4,916 | $41.00 | $201.56K | 127,701 | Direct |
| 27 Apr, 2026 | Yifan Liang | Cfo And Corp Secretary | Disposed G | 300 | $0.00 | $0 | 269,703 | Direct |
| 28 Apr, 2026 | Yifan Liang | Cfo And Corp Secretary | Disposed G | 300 | $0.00 | $0 | 269,403 | Direct |
| 17 Apr, 2026 | Stephen Chunping Chang | Chief Executive Officer | Disposed S | 1,492 | $32.90 | $49.09K | 649,293 | Direct |
| 17 Apr, 2026 | Yifan Liang | Cfo And Corp Secretary | Disposed S | 8,625 | $35.00 | $301.88K | 270,003 | Direct |
| 16 Apr, 2026 | Bing Xue | Evp Ww Sales Bus Development | Disposed S | 1,832 | $31.21 | $57.18K | 132,617 | Direct |
| 17 Apr, 2026 | Stephen Chunping Chang | Chief Executive Officer | Disposed S | 3,481 | $33.90 | $118.01K | 645,812 | Direct |