🕵️ Alpha and Omega Semiconductor Limited ($AOSL)
SEC insider & ownership activity, last 12 months · CIK 1387467 · every row links its SEC filing
Over the last 12 months insiders sold $2.7M against $641K of open-market buying. Yifan Liang sold $1.1M through a 10b5-1 trading plan in 4 lots (Apr). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $641K (1 lots) · 4 sellers, $2.7M (19 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Yifan Liang | 0 | – | 4 | $1.1M | Apr 17, 2026 |
| Bing Xue | 0 | – | 9 | $716K | Jul 16, 2026 |
| Chang Stephen Chunping | 0 | – | 4 | $691K | Apr 17, 2026 |
| Mike F. Chang | 1 | $641K | 0 | – | Mar 9, 2026 |
| Claudia Chen | 0 | – | 2 | $161K | May 22, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Mike F. Chang | 14.1% | 13G | Feb 12, 2025 | filing ↗ | |
| Blackrock, Inc. | 12.7% | 13G | Apr 30, 2025 | filing ↗ | |
| Dimensional Fund Advisors LP | exited | 13G | Jul 14, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Bing Xue | $30K | Jul 16, 2026 | filing ↗ |
| Bing Xue | $231K | Jun 16, 2026 | filing ↗ |
| Claudia Chen | $161K | May 22, 2026 | filing ↗ |
| Bing Xue | $202K | May 18, 2026 | filing ↗ |
| Yifan Liang | $302K | Apr 17, 2026 | filing ↗ |
| Stephen Chang | $513K | Apr 17, 2026 | filing ↗ |
| Bing Xue | $57K | Apr 16, 2026 | filing ↗ |
| Stephen Chang | $178K | Apr 14, 2026 | filing ↗ |
| Yifan Liang | $810K | Apr 14, 2026 | filing ↗ |
| Bing Xue | $53K | Mar 16, 2026 | filing ↗ |
| Bing Xue | $55K | Feb 17, 2026 | filing ↗ |
| Bing Xue | $17K | Jan 15, 2026 | filing ↗ |
| Bing Xue | $38K | Dec 15, 2025 | filing ↗ |
| Bing Xue | $34K | Nov 14, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jul 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 8, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | May 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 11, 2026 | filing ↗ |
| Earnings (2.02) | May 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 13, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 5, 2026 | filing ↗ |
| Earnings (2.02) | Feb 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | Nov 11, 2025 | filing ↗ |
| Earnings (2.02) | Nov 5, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 5, 2025 | filing ↗ |
| Earnings (2.02) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |