Michael L. Pfeiffer
Director · ALPHA & OMEGA SEMICONDUCTOR Ltd
Individual
- 2024
- Nov 12, 2025
- 2
Filings (90d)
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Michael L. Pfeiffer files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Yifan Liang - $1.11M in AOSL purchases and sales in the last 12 months
- Bing Xue - $716K in AOSL purchases and sales in the last 12 months
- Stephen Chunping Chang - $691K in AOSL purchases and sales in the last 12 months
- Mike F. Chang - $641K in AOSL purchases and sales in the last 12 months
- Claudia Chen - $161K in AOSL purchases and sales in the last 12 months
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Frequently asked questions
Who is Michael L. Pfeiffer?
Michael L. Pfeiffer is a corporate insider, tracked as Director of ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Michael L. Pfeiffer last file a Form 4?
The most recent primary Form 4 on record is dated 12 November 2025, one of 2 filings going back to 2024.
