AOSL · Insider Trading
Alpha and Omega Semiconductor Limited
Every open-market purchase and sale reported by AOSL officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-11 | Stephen Chunping Chang | Chief Executive Officer | G | +100,947 | — |
| 2026-09-11 | Mike F Chang | Director | G | −100,947 | — |
| 2026-08-14 | Mike F Chang | Director | G | −3,000,000 | — |
| 2026-07-21 | Joshua C. Chien | Director | A | +1,368 | — |
| 2026-07-17 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −875 | −$29.74K |
| 2026-07-15 | Mike F Chang | Director | G | −23,754 | — |
| 2026-06-17 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −4,916 | −$231.49K |
| 2026-06-03 | Mike F Chang | Director | G | −30,000 | — |
| 2026-05-28 | Mike F Chang | Director | G | −39,780 | — |
| 2026-05-27 | Mike F Chang | Director | G | −736,252 | — |
| 2026-05-26 | Stephen Chunping Chang | Chief Executive Officer | G | −2,000 | — |
| 2026-05-26 | Claudia Chen | Director | Sell | −4,061 | −$160.54K |
| 2026-05-20 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −4,916 | −$201.56K |
| 2026-04-20 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −1,832 | −$57.18K |
| 2026-04-20 | Yifan Liang | CFO and Corp Secretary | Sell | −8,625 | −$301.88K |
| 2026-04-20 | Stephen Chunping Chang | Chief Executive Officer | Sell | −14,884 | −$512.99K |
| 2026-04-16 | Stephen Chunping Chang | Chief Executive Officer | Sell | −5,594 | −$178.45K |
| 2026-04-16 | Yifan Liang | CFO and Corp Secretary | Sell | −26,517 | −$810.50K |
| 2026-03-25 | Mike F Chang | Director | MIXED | +8,081 | −$309.00K |
| 2026-03-25 | Wenjun Li | Chief Operating Officer | MIXED | +4,393 | −$120.16K |
| 2026-03-18 | Yifan Liang | CFO and Corp Secretary | MIXED | +33,501 | −$246.42K |
| 2026-03-18 | Stephen Chunping Chang | Chief Executive Officer | MIXED | +91,517 | −$931.84K |
| 2026-03-18 | Bing Xue | EVP-WW Sales & Bus Development | MIXED | +18,410 | −$249.55K |
| 2026-03-18 | Mike F Chang | Director | MIXED | +17,187 | −$596.03K |
| 2026-03-18 | Wenjun Li | Chief Operating Officer | MIXED | +14,461 | −$118.70K |
| 2026-03-10 | Mike F Chang | Director | Buy | +33,727 | +$640.81K |
| 2026-02-18 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −2,460 | −$54.93K |
| 2026-01-16 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −737 | −$16.53K |
| 2026-01-05 | Wenjun Li | Chief Operating Officer | F | −3,157 | −$65.22K |
| 2026-01-05 | Yifan Liang | CFO and Corp Secretary | F | −8,627 | −$178.23K |
| 2026-01-05 | Bing Xue | EVP-WW Sales & Bus Development | F | −8,627 | −$178.23K |
| 2026-01-05 | Mike F Chang | Director | F | −16,700 | −$345.02K |
| 2026-01-05 | Stephen Chunping Chang | Chief Executive Officer | F | −12,002 | −$247.96K |
| 2025-12-16 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −1,845 | −$37.93K |
| 2025-12-16 | Yifan Liang | CFO and Corp Secretary | G | −500 | — |
| 2025-11-17 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −1,845 | −$33.51K |
| 2025-11-12 | Michael J Salameh | Director | A | +5,681 | — |
| 2025-11-12 | Hanqing Li | Director | A | +5,681 | — |
| 2025-11-12 | So-Yeon Jeong | Director | A | +5,681 | — |
| 2025-11-12 | Lucas S. Chang | Director | A | +5,681 | — |
| 2025-11-12 | Claudia Chen | Director | A | +5,681 | — |
| 2025-11-12 | Michael L Pfeiffer | Director | A | +5,681 | — |
| 2025-11-12 | King Owyang | Director | A | +5,681 | — |
| 2025-10-21 | Yifan Liang | CFO and Corp Secretary | G | −300 | — |
| 2025-10-21 | Mike F Chang | Director | G | −40,000 | — |
| 2025-09-10 | Stephen Chunping Chang | Chief Executive Officer | G | −2,100 | — |
| 2025-09-02 | Bing Xue | EVP-WW Sales & Bus Development | F | −508 | −$13.46K |
| 2025-05-13 | Bing Xue | EVP-WW Sales & Bus Development | Sell | −1,845 | −$43.78K |
| 2025-03-18 | Mike F Chang | Chairman of Board | MIXED | +12,177 | −$1.32M |
| 2025-03-18 | Wenjun Li | Chief Operating Officer | MIXED | +15,149 | −$133.94K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Mike F Chang | Director | 4,259,379 | $96.26M |
| Stephen Chunping Chang | Chief Executive Officer | 735,017 | $16.61M |
| Yifan Liang | CFO and Corp Secretary | 270,003 | $6.10M |
| Bing Xue | EVP-WW Sales & Bus Development | 122,785 | $2.77M |
| Wenjun Li | Chief Operating Officer | 86,558 | $1.96M |
| King Owyang | Director | 75,256 | $1.70M |
| Michael L Pfeiffer | Director | 71,294 | $1.61M |
| Michael J Salameh | Director | 64,824 | $1.47M |
| Lucas S. Chang | Director | 30,885 | $698.00K |
| Claudia Chen | Director | 28,192 | $637.14K |
| Hanqing Li | Director | 23,800 | $537.88K |
| So-Yeon Jeong | Director | 23,800 | $537.88K |
| Joshua C. Chien | Director | 1,368 | $30.92K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the AOSL quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.