OMEX · Insider Trading
Odyssey Marine Exploration, Inc
Every open-market purchase and sale reported by OMEX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | John D Longley Jr | President & COO | A | +4,167 | — |
| 2026-07-02 | Mark Gordon | Chief Executive Officer | MIXED | +3,028 | −$969 |
| 2026-06-03 | Todd E Siegel | Director | M | +20,000 | — |
| 2026-06-03 | Jon D Sawyer | Director | M | +20,000 | — |
| 2026-06-03 | Larissa Tiffany Pommeraud | Director | M | +20,000 | — |
| 2026-06-03 | Mark B Justh | Director | M | +20,000 | — |
| 2026-05-18 | Larissa Tiffany Pommeraud | Director | A | +9,346 | — |
| 2026-05-18 | Jon D Sawyer | Director | A | +9,346 | — |
| 2026-04-22 | Todd E Siegel | Director | A | +31,475 | — |
| 2026-04-22 | Larissa Tiffany Pommeraud | Director | A | +23,981 | — |
| 2026-03-24 | Mark Gordon | Chief Executive Officer | M | +150,000 | +$62.12K |
| 2026-03-10 | Larissa Tiffany Pommeraud | Director | A | +6,803 | — |
| 2026-02-10 | Larissa Tiffany Pommeraud | Director | A | +5,291 | — |
| 2026-02-10 | Todd E Siegel | Director | A | +7,937 | — |
| 2026-01-08 | Todd E Siegel | Director | A | +7,653 | — |
| 2026-01-08 | Larissa Tiffany Pommeraud | Director | A | +10,204 | — |
| 2025-12-09 | Todd E Siegel | Director | A | +7,282 | — |
| 2025-12-09 | Larissa Tiffany Pommeraud | Director | A | +4,854 | — |
| 2025-12-09 | Jon D Sawyer | Director | A | +4,854 | — |
| 2025-12-04 | John D Longley Jr | President and COO | A | +125,000 deriv. | — |
| 2025-12-04 | Mark Gordon | Chief Executive Officer | A | +125,000 deriv. | — |
| 2025-12-04 | Larissa Tiffany Pommeraud | Director | A | +50,000 deriv. | — |
| 2025-12-04 | Todd E Siegel | Director | A | +50,000 deriv. | — |
| 2025-12-04 | Mark B Justh | Director | A | +50,000 deriv. | — |
| 2025-12-04 | Jon D Sawyer | Director | A | +50,000 deriv. | — |
| 2025-11-10 | Todd E Siegel | Director | A | +7,042 | — |
| 2025-11-10 | Jon D Sawyer | Director | A | +4,695 | — |
| 2025-11-10 | Larissa Tiffany Pommeraud | Director | A | +4,695 | — |
| 2025-10-20 | Mark Gordon | Chief Executive Officer | Sell | −90,000 | −$327.94K |
| 2025-10-15 | Mark Gordon | Chief Executive Officer | Sell | −80,956 | −$304.80K |
| 2025-10-15 | John D Longley Jr | President & COO | MIXED | −106,049 | −$882.81K |
| 2025-08-20 | Gallardo Juan Antonio Carlos Cortina | 10%+ Owner | — | — | — |
| 2025-08-13 | Gallardo Juan Antonio Carlos Cortina | 10%+ Owner | MIXED | +1,449,647 | +$994.10K |
| 2025-07-17 | Larissa Tiffany Pommeraud | Director | A | +8,475 | — |
| 2025-07-03 | Mark B Justh | Director | A | +385,242 | +$400.00K |
| 2025-07-03 | Mark Gordon | Chief Executive Officer | A | +365,242 | +$379.23K |
| 2025-07-03 | John D Longley Jr | President & COO | A | +144,466 | +$150.00K |
| 2025-04-15 | Todd E Siegel | Director | A | +28,083 | — |
| 2025-04-15 | Larissa Tiffany Pommeraud | Director | A | +8,321 | — |
| 2025-03-31 | Larissa Tiffany Pommeraud | Director | A | +7,500 deriv. | — |
| 2025-01-10 | Mark B Justh | Director | Buy | +244,653 deriv. | — |
| 2025-01-03 | Mark B Justh | Director | Buy | +50,000 | +$32.24K |
| 2024-12-26 | Mark B Justh | Director | Buy | +250,000 | +$137.50K |
| 2024-11-18 | Todd E Siegel | Director | A | +30,000 deriv. | — |
| 2024-11-18 | John D Longley Jr | President & COO | A | +150,000 deriv. | — |
| 2024-11-18 | Mark B Justh | Director | A | +30,000 deriv. | — |
| 2024-11-18 | Mark Gordon | Chief Executive Officer | A | +150,000 deriv. | — |
| 2024-11-18 | Jon D Sawyer | Director | A | +30,000 deriv. | — |
| 2024-11-13 | Todd E Siegel | Director | A | +13,954 | — |
| 2024-04-10 | Todd E Siegel | Director | A | +2,953 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Gallardo Juan Antonio Carlos Cortina | 10%+ Owner | 157,259 | $1.69M |
| Mark B Justh | Director | 35,201 | $378.41K |
| Mark Gordon | Chief Executive Officer | 25,456 | $273.65K |
| Todd E Siegel | Director | 6,655 | $71.54K |
| John D Longley Jr | President & COO | 6,179 | $66.42K |
| Jon D Sawyer | Director | 4,374 | $47.02K |
| Larissa Tiffany Pommeraud | Director | 4,079 | $43.85K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the OMEX quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.