6 insiders reported 27 Form 4 transactions for ODYSSEY MARINE EXPLORATION INC (OMEX) over the past 18 months (most recent 2026-07-02). Recent activity: Gordon Mark (Chief Executive Officer) Buy 4,167 shares, Longley John D Jr (President & COO) Buy 4,167 shares, Gordon Mark (Chief Executive Officer) Sell 1,139 shares, Gordon Mark (Chief Executive Officer) Sell 30,000 shares, Gordon Mark (Chief Executive Officer) Sell 30,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | Gordon Mark | Chief Executive Officer | Buy | 4,167 | $0 |
| 2026-07-02 | Longley John D Jr | President & COO | Buy | 4,167 | $0 |
| 2026-07-02 | Gordon Mark | Chief Executive Officer | Sell | 1,139 | $969 |
| 2025-10-20 | Gordon Mark | Chief Executive Officer | Sell | 30,000 | $116,100 |
| 2025-10-20 | Gordon Mark | Chief Executive Officer | Sell | 30,000 | $105,000 |
| 2025-10-20 | Gordon Mark | Chief Executive Officer | Sell | 30,000 | $106,800 |
| 2025-10-15 | Gordon Mark | Chief Executive Officer | Sell | 30,000 | $112,200 |
| 2025-10-15 | Longley John D Jr | President & COO | Sell | 38,977 | $136,420 |
| 2025-10-15 | Longley John D Jr | President & COO | Sell | 73,572 | $275,895 |
| 2025-10-15 | Longley John D Jr | President & COO | Buy | 143,500 | $58,835 |
| 2025-10-15 | Longley John D Jr | President & COO | Sell | 143,500 | $532,385 |
| 2025-10-15 | Gordon Mark | Chief Executive Officer | Sell | 20,956 | $73,346 |
| 2025-10-15 | Longley John D Jr | President & COO | Buy | 6,500 | $2,665 |
| 2025-10-15 | Gordon Mark | Chief Executive Officer | Sell | 30,000 | $119,400 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Buy | 489,279 | $538,207 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Sell | 96,409 | $163,895 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Sell | 473,591 | $814,577 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Sell | 409,100 | $695,470 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Sell | 2.0M | $0 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Buy | 2.0M | $0 |
| 2025-08-13 | Cortina Gallardo Juan Antonio Carlos | 10% Owner | Buy | 1.9M | $2.1M |
| 2025-07-17 | Pommeraud Larissa Tiffany | Director | Buy | 8,475 | $0 |
| 2025-07-03 | Longley John D Jr | President & COO | Buy | 144,466 | $150,245 |
| 2025-07-03 | Justh Mark B | Director | Buy | 385,242 | $400,652 |
| 2025-07-03 | Gordon Mark | Chief Executive Officer | Buy | 365,242 | $379,852 |
Source: SEC Form 4 filings · as of 2026-07-02