Michael L Pfeiffer
CIK 1598738 · last filed 2025-11-12
Michael L Pfeiffer is a corporate insider who has filed 15 SEC Form 4 insider transactions across 1 company since 2014. The most recent filing, for AOSL, was dated Nov 12, 2025. Across all open-market trades the lifetime net is −$90.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.2M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$3.22M
1
15
-$90.8K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AOSL | Director | 71,294 | $45.21 | $3.22M | -$90.8K | 15 | 2025-11-12 |
Recent Filings
15 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-12 | AOSL | Grant (A) | +5,681 | $0 | EDGAR |
| 2024-11-08 | AOSL | Grant (A) | +4,456 | $0 | EDGAR |
| 2024-01-19 | AOSL | Mixed | +3,538 | -$41.2K | EDGAR |
| 2023-11-13 | AOSL | Grant (A) | +5,593 | $0 | EDGAR |
| 2022-12-01 | AOSL | Grant (A) | +4,061 | $0 | EDGAR |
| 2021-11-15 | AOSL | Grant (A) | +4,009 | $0 | EDGAR |
| 2020-11-25 | AOSL | Grant (A) | +6,458 | $0 | EDGAR |
| 2019-11-12 | AOSL | Grant (A) | +7,618 | $0 | EDGAR |
| 2018-11-13 | AOSL | Grant (A) | +7,974 | $0 | EDGAR |
| 2017-11-13 | AOSL | Grant (A) | +5,771 | $0 | EDGAR |