ALPHA & OMEGA SEMICONDUCTOR (AOSL) stock: insider trades, news & valuation
Net sellingShare price and insider trades
ALPHA & OMEGA SEMICONDUCTOR insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $641K and 4 sold $2.7M of AOSL stock on the open market.
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AOSL insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $30K | 1 |
| Q2 2026 | — | 0 | $2.5M | 13 |
| Q1 2026 | $641K | 1 | $124K | 3 |
| Q4 2025 | — | 0 | $71K | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 ALPHA & OMEGA SEMICONDUCTOR Ltd insider reported open-market purchases totaling $641K, while 4 insiders reported sales totaling $2.7M. 19 of 19 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
AOSL earnings: how the stock reacted
Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.
| Release | 15 days before | Insiders, 30 days before | Reaction (2 days) | Next 30 days |
|---|---|---|---|---|
| Aug 12, 2026 | +13.0% | Sold $30K | -12.1%S&P +0.9% | -15.8% |
| May 6, 2026 | +9.6% | Sold $1.9M | -14.4%S&P +1.1% | +12.2% |
| Feb 5, 2026 | +2.8% | Sold $17K | -4.1%S&P +0.6% | -7.0% |
| Nov 5, 2025 | -17.7% | None | -25.3%S&P -0.7% | +8.1% |
| Aug 6, 2025 | -9.8% | None | -5.3%S&P +0.7% | +13.2% |
| May 7, 2025 | +21.5% | None | +4.7%S&P +1.1% | +11.1% |
| Feb 5, 2025 | +3.7% | None | -3.3%S&P +0.8% | -34.2% |
| Nov 4, 2024 | -9.2% | None | -21.3%S&P +1.0% | +76.4% |
Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Jul 17SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 875122,785 held (−1%) | $33.99 | $30K | -18.0% | — |
| Jun 17SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 4,916123,660 held (−4%) | $47.09 | $231K | -40.8% | — |
| May 26SEC | Claudia ChenDirector | Sell Plan | 3,84428,409 held (−12%) | $39.47 | $152K | -29.4% | — |
| May 26SEC | Claudia ChenDirector | Sell Plan | 21728,192 held (−1%) | $40.54 | $9K | -31.3% | — |
| May 20SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 4,916127,701 held (−4%) | $41.00 | $202K | -32.0% | — |
| Apr 20SEC | Stephen Chunping ChangCEO | Sell Plan | 9,911635,901 held (−2%) | $34.90 | $346K | -20.1% | — |
| Apr 20SEC | Yifan LiangCFO | Sell Plan | 8,625270,003 held (−3%) | $35.00 | $302K | -20.4% | — |
| Apr 20SEC | Stephen Chunping ChangCEO | Sell Plan | 3,481645,812 held (−1%) | $33.90 | $118K | -17.8% | — |
| Apr 20SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 1,832132,617 held (−1%) | $31.21 | $57K | -10.7% | — |
| Apr 20SEC | Stephen Chunping ChangCEO | Sell Plan | 1,492649,293 held (−0%) | $32.90 | $49K | -15.3% | — |
| Apr 16SEC | Yifan LiangCFO | Sell Plan | 11,187278,628 held (−4%) | $32.00 | $358K | -12.9% | — |
| Apr 16SEC | Yifan LiangCFO | Sell Plan | 7,939289,815 held (−3%) | $30.00 | $238K | -7.1% | — |
| Apr 16SEC | Yifan LiangCFO | Sell Plan | 7,391297,754 held (−2%) | $29.00 | $214K | -3.9% | — |
| Apr 16SEC | Stephen Chunping ChangCEO | Sell Plan | 5,594650,785 held (−1%) | $31.90 | $178K | -12.6% | — |
| Mar 18SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 2,408113,631 held (−2%) | $21.92 | $53K | +27.1% | — |
| Mar 10SEC | Mike F ChangDirector | Buy | 33,7274,369,574 held (+1%) | $19.00 | $641K | +46.7% | — |
| Feb 18SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 2,460116,039 held (−2%) | $22.33 | $55K | +24.8% | — |
| Jan 16SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 737118,499 held (−1%) | $22.43 | $17K | +24.3% | — |
| Dec 16SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 1,845127,863 held (−1%) | $20.56 | $38K | +35.6% | — |
| Nov 17SEC | Bing XueEvp-Ww Sales & Bus Development | Sell Plan | 1,845129,708 held (−1%) | $18.16 | $34K | +53.5% | — |
Insiders at ALPHA & OMEGA SEMICONDUCTOR Ltd
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Mike F ChangDirector | $641K | — | Mar 10, 2026 | — |
| Yifan LiangCFO | — | $1.1M | Apr 20, 2026 | — |
| Bing XueEvp-Ww Sales & Bus Development | — | $716K | Jul 17, 2026 | — |
| Stephen Chunping ChangCEO | — | $691K | Apr 20, 2026 | — |
| Claudia ChenDirector | — | $161K | May 26, 2026 | — |
AOSL stock: common questions
Are ALPHA & OMEGA SEMICONDUCTOR Ltd insiders buying AOSL stock?
In the past 12 months, 1 insiders reported open-market purchases of AOSL worth $641K. The latest was Director Mike F Chang bought $641K of AOSL at $19.00 — first open-market purchase in our records.
Are ALPHA & OMEGA SEMICONDUCTOR Ltd insiders selling AOSL stock?
4 insiders reported sales worth $2.7M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is AOSL's 52-week range?
Over the past year AOSL has traded between $17.47 and $53.32. It last closed at $27.87 on Oct 9, 2026.