Michael L. Pfeiffer serves as Executive at ALPHA & OMEGA SEMICONDUCTOR Ltd, where they oversee executive responsibilities. Since joining the company, Michael L. Pfeiffer has executed 16 insider transactions totaling $90.8K, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 11, 2025 involved receiving (via award) 5,681 shares valued at $0.
Michael L. Pfeiffer currently holds 71,294 shares of ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Michael L. Pfeiffer has been a net seller of AOSL stock. They have purchased $0 and sold $90.8K worth of shares.
Michael L. Pfeiffer's most recent insider trade was on Nov 11, 2025, when they sold 5,681 shares at $0.00 per share.
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| $7.21 |
| Planned |
| Jan 19, 2024 | AOSL | $73.1K | Sale | 2,673 | $27.34 | Planned |
| Jan 18, 2024 | AOSL | $17.7K | Sale | 664 | $26.68 | Planned |
| Jan 18, 2024 | AOSL | $17.1K | Option Exercise | 2,375 | $7.21 | Planned |
| Nov 9, 2023 | AOSL | $0 | Award | 5,593 | $N/A | Discretionary |
| Nov 29, 2022 | AOSL | $0 | Award | 4,061 | $N/A | Discretionary |
| Nov 11, 2021 | AOSL | $0 | Award | 4,009 | $N/A | Discretionary |
| Nov 12, 2020 | AOSL | $0 | Award | 6,458 | $N/A | Discretionary |
| Nov 7, 2019 | AOSL | $0 | Award | 7,618 | $N/A | Discretionary |
| Nov 9, 2018 | AOSL | $0 | Award | 7,974 | $N/A | Discretionary |
| Nov 8, 2017 | AOSL | $0 | Award | 5,771 | $N/A | Discretionary |
| Nov 9, 2016 | AOSL | $0 | Award | 4,513 | $N/A | Discretionary |
| Nov 9, 2015 | AOSL | $0 | Award | 5,134 | $N/A | Discretionary |
| Nov 10, 2014 | AOSL | $0 | Award | 4,488 | $N/A | Discretionary |
| Mar 24, 2014 | AOSL | $0 | Award | 2,000 | $N/A | Discretionary |