Insider · CIK 0001511393
Mike F Chang
Files at AOSL (ALPHA & OMEGA SEMICONDUCTOR Ltd). First filing Oct 27, 2023, latest Mar 10, 2026.
In brief
Mike F Chang files SEC Form 4 as chair, director and 10% owner at AOSL (ALPHA & OMEGA SEMICONDUCTOR Ltd). Since Oct 27, 2023, Mike F Chang has reported 1 open-market buy worth $641k and 4 open-market sells worth $3.1M, the latest filed on Mar 10, 2026.
A track record needs three past buys with six months of prices behind them; Mike F Chang has 1, so none is measured yet.
The newest scored trade: bought $641k of AOSL on Mar 9, 2026, filed Mar 10, 2026, scored 38 (weak). In the last 12 months: 1 buy worth $641k and 0 sells worth $0.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
AOSL: ALPHA & OMEGA SEMICONDUCTOR Ltd
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 38Weak | AOSLbuy ALPHA & OMEGA SEMICONDUCTOR Ltd | $641k 33,727 shares | +1% | +22% from low-38% from high | |
| 22Weak | ALPHA & OMEGA SEMICONDUCTOR Ltd | $807k 30,000 shares | -1% | +35% from low-28% from high | |
| 15Weak | ALPHA & OMEGA SEMICONDUCTOR Ltd | $796k 30,000 shares | -1% | +30% from low-30% from high | |
| 15Weak | ALPHA & OMEGA SEMICONDUCTOR Ltd | $750k 30,000 shares | -1% | +24% from low-33% from high | |
| 7Weak | ALPHA & OMEGA SEMICONDUCTOR Ltd | $751k 30,000 shares | -1% | +6% from low-35% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jan 29, 2024 | AOSL ALPHA AND OMEGA SEMICONDUCTOR LIMITED | 30,000 0.11% of outstanding | $807k | Jan 29, 2024 | $1.5M |
| Dec 28, 2023 | AOSL ALPHA AND OMEGA SEMICONDUCTOR LIMITED | 30,000 0.11% of outstanding | $796k | Dec 28, 2023 | $1.5M |
| Dec 14, 2023 | AOSL ALPHA AND OMEGA SEMICONDUCTOR LIMITED | 30,000 0.11% of outstanding | $750k | Dec 14, 2023 | $1.6M |
| Oct 26, 2023 | AOSL ALPHA AND OMEGA SEMICONDUCTOR LIMITED | 30,000 0.11% of outstanding | $751k | Oct 26, 2023 | $1.8M |
Transactions
Every row this insider has filed, 41 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 24, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Sharesindirect: By CHANG TRUST | -100,947 | $0.00 | $0 | 3,698,839 | 34 d ago |
| Aug 13, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -3,000,000 | $0.00 | $0 | 560,540 | Aug 14, 2026 |
| Jul 13, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -23,754 | $0.00 | $0 | 3,560,540 | Jul 15, 2026 |
| Jun 1, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -30,000 | $0.00 | $0 | 3,584,294 | Jun 3, 2026 |
| May 26, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -39,780 | $0.00 | $0 | 3,614,294 | May 28, 2026 |
| May 22, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -736,252 | $0.00 | $0 | 3,654,074 | May 27, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -14,419 | $21.43 | $309k | 4,355,155 | Mar 25, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +22,500 | $0.00 | $0 | 4,390,326 | Mar 25, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +22,500 | $0.00 | $0 | 4,392,074 | Mar 18, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -17,984 | $21.43 | $385k | 4,374,090 | Mar 18, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -9,829 | $21.43 | $211k | 4,364,261 | Mar 18, 2026 |
| Mar 16, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +22,500 | $0.00 | $0 | 4,386,761 | Mar 18, 2026 |
| Mar 9, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | POpen-market purchase Common Shares | +33,727 | $19.00 | $641k | 4,369,574 | Mar 10, 2026 |
| Jan 2, 2026 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -16,700 | $20.66 | $345k | 4,335,847 | Jan 5, 2026 |
| Oct 20, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -40,000 | $0.00 | $0 | 4,352,547 | Oct 21, 2025 |
| Mar 17, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +22,500 | $0.00 | $0 | 4,402,870 | Mar 18, 2025 |
| Mar 17, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -27,296 | $27.61 | $754k | 4,375,574 | Mar 18, 2025 |
| Mar 17, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -20,527 | $27.61 | $567k | 4,355,047 | Mar 18, 2025 |
| Mar 17, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +37,500 | $0.00 | $0 | 4,392,547 | Mar 18, 2025 |
| Jan 2, 2025 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -22,446 | $36.54 | $820k | 4,380,370 | Jan 3, 2025 |
| Dec 3, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -30,000 | $0.00 | $0 | 4,402,816 | Dec 4, 2024 |
| Aug 28, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -10,000 | $0.00 | $0 | 4,432,816 | Aug 29, 2024 |
| May 10, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -30,000 | $0.00 | $0 | 4,442,816 | May 20, 2024 |
| Mar 15, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +37,500 | $0.00 | $0 | 4,527,786 | Mar 18, 2024 |
| Mar 15, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -30,803 | $21.55 | $664k | 4,496,983 | Mar 18, 2024 |
| Mar 15, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -24,167 | $21.55 | $521k | 4,472,816 | Mar 18, 2024 |
| Sep 6, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | GGift Common Shares | -10,000 | $0.00 | $0 | 4,490,286 | Feb 9, 2024 |
| Jan 29, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Common Shares10b5-1 | +30,000 | $7.44 | $223k | 4,530,286 | Jan 30, 2024 |
| Jan 29, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | SOpen-market sale Common Shares10b5-1 | -30,000 | $26.91 | $807k | 4,500,286 | Jan 30, 2024 |
| Jan 29, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Employee Share Option (right to buy)derivative10b5-1 | -30,000 | $0.00 | $0 | 0 | Jan 30, 2024 |
| Jan 2, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | AGrant or award Common Shares | +180,000 | $0.00 | $0 | 4,517,591 | Jan 5, 2024 |
| Jan 2, 2024 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | FTax withholding Common Shares | -17,305 | $27.38 | $474k | 4,500,286 | Jan 5, 2024 |
| Dec 28, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Common Shares10b5-1 | +30,000 | $7.44 | $223k | 4,367,591 | Dec 29, 2023 |
| Dec 28, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | SOpen-market sale Common Shares10b5-1 | -30,000 | $26.53 | $796k | 4,337,591 | Dec 29, 2023 |
| Dec 28, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Employee Share Option (right to buy)derivative10b5-1 | -30,000 | $0.00 | $0 | 30,000 | Dec 29, 2023 |
| Dec 14, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Common Shares10b5-1 | +30,000 | $7.44 | $223k | 4,367,591 | Dec 18, 2023 |
| Dec 14, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | SOpen-market sale Common Shares10b5-1 | -30,000 | $25.00 | $750k | 4,337,591 | Dec 18, 2023 |
| Dec 14, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Employee Share Option (right to buy)derivative10b5-1 | -30,000 | $0.00 | $0 | 60,000 | Dec 18, 2023 |
| Oct 26, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Common Shares10b5-1 | +30,000 | $7.44 | $223k | 4,367,591 | Oct 27, 2023 |
| Oct 26, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | SOpen-market sale Common Shares10b5-1 | -30,000 | $25.03 | $751k | 4,337,591 | Oct 27, 2023 |
| Oct 26, 2023 | AOSL ALPHA & OMEGA SEMICONDUCTOR Ltd | MOption exercise Employee Share Option (right to buy)derivative10b5-1 | -0 | $0.00 | $0 | 90,000 | Oct 27, 2023 |
Questions about Mike F Chang
Answered from the filings on this page, as of the latest one.
Is Mike F Chang buying or selling?
In the last 12 months Mike F Chang reported 1 open-market buy worth $641k and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $641k of AOSL on Mar 9, 2026. Grants, option exercises and tax withholding are not counted.
How did Mike F Chang's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Mike F Chang has 1.
Where does Mike F Chang file Form 4?
Mike F Chang has filed Form 4 at AOSL (ALPHA & OMEGA SEMICONDUCTOR Ltd) as Executive Chairman. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.