Mark W. Marinko
CIK 1612207 · SR VP, Chief Financial Officer · last filed 2026-02-26
Mark W. Marinko is a SR VP, Chief Financial Officer who has filed 23 SEC Form 4 insider transactions across 2 companies since 2015. The most recent filing shows the insider bought $58.4K of SXC on Feb 26, 2026. Across all open-market trades the lifetime net is +$58.4K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $596.5K 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.
$596.5K
2
23
$58.4K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SXC | SR VP, Chief Financial Officer | 62,198 | $9.59 | $596.5K | $58.4K | 10 | 2026-02-26 |
| Great Lakes Dredge & Dock CORP (GLDD) Delisted | Chief Financial Officer | 229,817 | $17.00 | $3.91M | $0 | 13 | 2021-03-16 |
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-02-26 | SXC | Buy (P) | +10,000 | $58.4K | EDGAR |
| 2026-02-25 | SXC | Mixed | +17,852 | -$69.2K | EDGAR |
| 2025-03-11 | SXC | Mixed | +4,896 | -$35.2K | EDGAR |
| 2025-02-25 | SXC | Mixed | +25,345 | $90.4K | EDGAR |
| 2024-03-19 | SXC | Grant (A) | — | $0 | EDGAR |
| 2024-03-11 | SXC | Mixed | +4,896 | -$42.7K | EDGAR |
| 2024-02-27 | SXC | Mixed | +4,268 | -$45.5K | EDGAR |
| 2023-03-13 | SXC | Mixed | +4,541 | -$40.7K | EDGAR |
| 2023-02-27 | SXC | Grant (A) | — | $0 | EDGAR |
| 2022-03-08 | SXC | Grant (A) | — | $0 | EDGAR |