MARTIN F JACKSON
CIK 1168882 · EXECUTIVE VICE PRESIDENT · last filed 2025-08-04
MARTIN F JACKSON is an EXECUTIVE VICE PRESIDENT who has filed 36 SEC Form 4 insider transactions across 1 company since 2009. The most recent filing shows the insider had shares withheld for taxes covering $370.3K of SEM on Aug 4, 2025. Across all open-market trades the lifetime net is −$21.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $23.1M 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.
$23.09M
1
36
-$20.96M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SEM | EXECUTIVE VICE PRESIDENT | 1,386,055 | $16.66 | $23.09M | -$20.96M | 36 | 2025-08-04 |
Recent Filings
36 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-04 | SEM | Tax (F) | −29,460 | -$370.3K | EDGAR |
| 2025-07-31 | SEM | Grant (A) | +150,000 | $0 | EDGAR |
| 2024-11-07 | SEM | Tax (F) | −42,422 | -$1.58M | EDGAR |
| 2024-08-05 | SEM | Tax (F) | −53,028 | -$1.81M | EDGAR |
| 2024-08-02 | SEM | Tax (F) | −18,648 | -$730.6K | EDGAR |
| 2024-05-01 | SEM | Grant (A) | +138,000 | $0 | EDGAR |
| 2023-08-02 | SEM | Mixed | +127,905 | -$661.1K | EDGAR |
| 2023-07-31 | SEM | Tax (F) | −61,814 | -$1.86M | EDGAR |
| 2022-08-03 | SEM | Grant (A) | +150,000 | $0 | EDGAR |
| 2022-08-03 | SEM | Tax (F) | −66,270 | -$1.96M | EDGAR |