Michael J. Warren
CIK 1698331 · last filed 2026-03-12
Michael J. Warren is a corporate insider who has filed 49 SEC Form 4 insider transactions across 4 companies since 2017. The most recent filing, for MMS, was dated Mar 12, 2026. Across all open-market trades the lifetime net is −$541.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.1M 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.
$1.14M
4
49
-$541.9K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MMS | Director | 17,839 | $62.28 | $1.11M | -$338.9K | 37 | 2026-03-12 |
| WD | Director | 523 | $53.26 | $27.9K | -$202.9K | 10 | 2023-05-08 |
| Hyzon Motors Inc. (HYZNW) Delisted | Director | 22,130 | $0.00 | $66 | $0 | 1 | 2021-07-20 |
| Hyzon Motors Inc. (DCRBU) Delisted | Director | — | $11.15 | — | $0 | 1 | 2020-11-19 |
Recent Filings
49 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-12 | MMS | Grant (A) | +2,246 | $0 | EDGAR |
| 2025-12-02 | MMS | Mixed | +53 | $1.2K | EDGAR |
| 2025-09-03 | MMS | Mixed | +52 | $1.2K | EDGAR |
| 2025-06-03 | MMS | Mixed | +63 | $1.2K | EDGAR |
| 2025-03-13 | MMS | Grant (A) | +2,187 | $0 | EDGAR |
| 2025-03-04 | MMS | Mixed | +18 | $1.2K | EDGAR |
| 2024-12-03 | MMS | Mixed | +16 | $1.2K | EDGAR |
| 2024-09-10 | MMS | Buy (P) | +34 | $3.0K | EDGAR |
| 2024-09-03 | MMS | Grant (A) | — | $0 | EDGAR |
| 2024-06-04 | MMS | Grant (A) | — | $0 | EDGAR |