Mark W. Marinko
CIK 1612207 · SR VP, Chief Financial Officer · last filed 2026-02-26
"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.
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Disclosed Exposure
$596.5K
Companies
2
Total Filings
23
Lifetime Open-Market Net
$58.4K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 2 of 3
23 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-03-16 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +343 | -$93.1K | EDGAR |
| 2021-03-15 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +2,664 | -$142.5K | EDGAR |
| 2021-03-10 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +592 | -$156.9K | EDGAR |
| 2021-03-09 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Grant (A) | +10,234 | $0 | EDGAR |
| 2021-01-04 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Tax (F) | −21,860 | -$287.9K | EDGAR |
| 2020-03-16 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +22,962 | -$43.0K | EDGAR |
| 2020-03-10 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +45,328 | -$134.7K | EDGAR |
| 2020-01-03 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Tax (F) | −21,532 | -$244.0K | EDGAR |
| 2019-03-15 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Mixed | +63,961 | $35.3K | EDGAR |
| 2018-03-12 | Great Lakes Dredge & Dock CORP (GLDD) Delisted | Grant (A) | +32,896 | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.