Odyssey Marine Exploration (OMEX)
Odyssey Marine Exploration on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders and insider trades. Listed on Nasdaq, classified by the SEC as water transportation.
4.8M
Short interest
settlement 2026-10-15
18.6
Days to cover
+2.5 days vs prior
62.2%
Short share of volume
2026-11-03
4,000
Fails to deliver
settlement 2026-10-13
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-11-03.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in OMEX is 4,766,804 shares, up 116,801 shares over the last month. Over the last 48 readings it ranged from 1,251,463 shares (15 November 2024) to 6,804,107 shares (30 April 2025). At the reported average volume of 257K shares a day that is 18.6 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 4,766,804 | +13.8% | 256,595 | 18.58 |
| 2026-09-30 | 4,189,178 | -9.9% | 260,422 | 16.09 |
| 2026-09-15 | 4,650,003 | +15.7% | 229,839 | 20.23 |
| 2026-08-31 | 4,019,514 | -1.4% | 319,180 | 12.59 |
| 2026-08-14 | 4,078,650 | -15.2% | 456,441 | 8.94 |
| 2026-07-31 | 4,810,101 | -1.5% | 301,084 | 15.98 |
| 2026-07-15 | 4,883,140 | +7.5% | 709,926 | 6.88 |
| 2026-06-30 | 4,541,649 | -0.9% | 592,511 | 7.67 |
| 2026-06-15 | 4,583,921 | +2.9% | 788,724 | 5.81 |
| 2026-05-29 | 4,454,952 | +2.5% | 627,897 | 7.10 |
| 2026-05-15 | 4,346,367 | +11.3% | 1,160,736 | 3.74 |
| 2026-04-30 | 3,903,748 | -30.0% | 1,686,941 | 2.31 |
| 2026-04-15 | 5,575,640 | +93.8% | 29,290,418 | 1.00 |
| 2026-03-31 | 2,876,599 | +17.5% | 1,495,837 | 1.92 |
| 2026-03-13 | 2,447,458 | -1.9% | 445,399 | 5.49 |
| 2026-02-27 | 2,495,865 | -2.1% | 473,086 | 5.28 |
| 2026-02-13 | 2,549,699 | -6.8% | 660,797 | 3.86 |
| 2026-01-30 | 2,735,107 | -17.1% | 1,719,706 | 1.59 |
| 2026-01-15 | 3,299,596 | -24.2% | 708,204 | 4.66 |
| 2025-12-31 | 4,352,282 | +4.5% | 804,747 | 5.41 |
| 2025-12-15 | 4,166,554 | +1.6% | 812,777 | 5.13 |
| 2025-11-28 | 4,102,204 | -4.0% | 1,045,856 | 3.92 |
| 2025-11-14 | 4,271,153 | +6.0% | 2,045,055 | 2.09 |
| 2025-10-31 | 4,027,793 | -22.1% | 3,189,089 | 1.26 |
| 2025-10-15 | 5,166,945 | +23.9% | 5,135,642 | 1.01 |
| 2025-09-30 | 4,171,264 | -5.1% | 2,119,420 | 1.97 |
| 2025-09-15 | 4,393,413 | +25.4% | 1,912,902 | 2.30 |
| 2025-08-29 | 3,503,359 | +21.1% | 3,230,712 | 1.08 |
| 2025-08-15 | 2,891,821 | -15.1% | 2,494,324 | 1.16 |
| 2025-07-31 | 3,406,100 | -4.4% | 2,654,543 | 1.28 |
| 2025-07-15 | 3,563,328 | +10.0% | 2,759,941 | 1.29 |
| 2025-06-30 | 3,240,199 | +0.2% | 2,968,417 | 1.09 |
| 2025-06-13 | 3,232,971 | +71.5% | 2,376,643 | 1.36 |
| 2025-05-30 | 1,885,071 | -0.4% | 1,263,124 | 1.49 |
| 2025-05-15 | 1,893,005 | -72.2% | 3,902,335 | 1.00 |
| 2025-04-30 | 6,804,107 | +258.8% | 99,448,089 | 1.00 |
| 2025-04-15 | 1,896,633 | +14.0% | 977,719 | 1.94 |
| 2025-03-31 | 1,664,137 | +3.9% | 881,099 | 1.89 |
| 2025-03-14 | 1,602,103 | -1.1% | 127,178 | 12.60 |
| 2025-02-28 | 1,619,986 | -3.1% | 323,763 | 5.00 |
| 2025-02-14 | 1,672,586 | +1.1% | 218,129 | 7.67 |
| 2025-01-31 | 1,653,789 | -19.8% | 401,296 | 4.12 |
| 2025-01-15 | 2,061,153 | -21.6% | 1,375,192 | 1.50 |
| 2024-12-31 | 2,630,703 | +10.3% | 3,261,752 | 1.00 |
| 2024-12-13 | 2,384,780 | +88.6% | 8,234,038 | 1.00 |
| 2024-11-29 | 1,264,400 | +1.0% | 549,524 | 2.30 |
| 2024-11-15 | 1,251,463 | -16.3% | 487,131 | 2.57 |
| 2024-10-31 | 1,495,590 | -20.9% | 467,927 | 3.20 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 3 November 2026, the short share of OMEX volume is 62.2%, up 18.1 points over the last five sessions. Over the last 30 readings it ranged from 17.8% (14 October 2026) to 76.8% (5 October 2026). The latest reading is 9.7 points above the 30-session average of 52.5%, on 12K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-03 | 8K | 12K | 62.2% | 0 |
| 2026-11-02 | 7K | 11K | 59.4% | 330 |
| 2026-10-30 | 17K | 34K | 51.0% | 717 |
| 2026-10-29 | 23K | 36K | 65.2% | 942 |
| 2026-10-28 | 113K | 206K | 54.9% | 0 |
| 2026-10-27 | 74K | 167K | 44.2% | 15,852 |
| 2026-10-26 | 179K | 272K | 65.9% | 43,160 |
| 2026-10-23 | 70K | 127K | 54.8% | 0 |
| 2026-10-22 | 38K | 88K | 42.9% | 0 |
| 2026-10-21 | 128K | 193K | 66.5% | 0 |
| 2026-10-20 | 130K | 211K | 61.4% | 22,520 |
| 2026-10-19 | 253K | 430K | 58.7% | 27,557 |
| 2026-10-16 | 121K | 245K | 49.5% | 0 |
| 2026-10-15 | 38K | 109K | 35.0% | 0 |
| 2026-10-14 | 16K | 88K | 17.8% | 0 |
| 2026-10-13 | 28K | 104K | 26.4% | 0 |
| 2026-10-12 | 139K | 207K | 67.4% | 0 |
| 2026-10-09 | 66K | 100K | 65.8% | 3,352 |
| 2026-10-08 | 88K | 163K | 54.0% | 120 |
| 2026-10-07 | 70K | 114K | 61.4% | 0 |
| 2026-10-06 | 26K | 108K | 24.4% | 40 |
| 2026-10-05 | 129K | 169K | 76.8% | 3 |
| 2026-10-02 | 63K | 138K | 45.9% | 300 |
| 2026-10-01 | 36K | 58K | 62.6% | 0 |
| 2026-09-30 | 48K | 108K | 44.3% | 0 |
| 2026-09-29 | 106K | 165K | 64.3% | 0 |
| 2026-09-28 | 44K | 136K | 32.4% | 0 |
| 2026-09-25 | 58K | 153K | 38.0% | 0 |
| 2026-09-24 | 114K | 160K | 71.4% | 0 |
| 2026-09-23 | 78K | 156K | 50.1% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 13 October 2026, the fails-to-deliver balance in OMEX is 4,000 shares, up 2,315 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (6 August 2026) to 20,356 shares (23 September 2026).
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-13 | 4,000 | $0.64 | $3K |
| 2026-10-08 | 1,685 | $0.73 | $1K |
| 2026-10-05 | 8,370 | $0.66 | $6K |
| 2026-10-02 | 5,434 | $0.69 | $4K |
| 2026-09-28 | 6,278 | $0.70 | $4K |
| 2026-09-23 | 20,356 | $0.75 | $15K |
| 2026-09-21 | 767 | $0.75 | $575 |
| 2026-09-11 | 48 | $0.74 | $36 |
| 2026-09-10 | 33 | $0.79 | $26 |
| 2026-08-25 | 2,247 | $0.90 | $2K |
| 2026-08-20 | 3,291 | $0.87 | $3K |
| 2026-08-13 | 3,000 | $0.85 | $3K |
| 2026-08-10 | 19,233 | $0.88 | $17K |
| 2026-08-07 | 7,188 | $0.75 | $5K |
| 2026-08-06 | 3 | $0.74 | $2 |
| 2026-08-04 | 37 | $0.66 | $24 |
| 2026-07-28 | 250 | $0.71 | $178 |
| 2026-07-27 | 1,930 | $0.69 | $1K |
| 2026-07-23 | 7,695 | $0.77 | $6K |
| 2026-07-22 | 198 | $0.73 | $145 |
| 2026-07-21 | 1,018 | $0.69 | $702 |
| 2026-07-20 | 6,390 | $0.68 | $4K |
| 2026-07-17 | 10,004 | $0.69 | $7K |
| 2026-07-15 | 8,166 | $0.68 | $6K |
| 2026-07-14 | 715 | $0.67 | $479 |
| 2026-07-10 | 1,962 | $0.71 | $1K |
| 2026-07-09 | 5,451 | $0.67 | $4K |
| 2026-07-08 | 14,039 | $0.68 | $10K |
| 2026-07-06 | 9 | $0.79 | $7 |
| 2026-07-01 | 1,858 | $0.85 | $2K |
Insider trades
SEC Form 4, newest first. JSONNo open-market insider trades were reported for OMEX in the last 90 days. The most recent filings are listed below. Latest filing: Longley John D Jr (President & COO) on 2026-06-30.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | Longley John D Jr | President & COO | Grant | 4K | $0.00 | $0 | 154K |
| 2026-06-30 | Gordon Mark | Chief Executive Officer | Tax withholding | 1K | $0.85 | $969 | 635K |
| 2026-06-30 | Gordon Mark | Chief Executive Officer | Grant | 4K | $0.00 | $0 | 636K |
| 2026-06-01 | Pommeraud Larissa Tiffany | Director | Exercise or conversion | 20K | $0.00 | $0 | 102K |
| 2026-06-01 | SIEGEL TODD E | Director | Exercise or conversion | 20K | $0.00 | $0 | 166K |
| 2026-06-01 | Sawyer Jon D | Director | Exercise or conversion | 20K | $0.00 | $0 | 109K |
| 2026-06-01 | Justh Mark B | Director | Exercise or conversion | 20K | $0.00 | $0 | 879K |
| 2026-05-14 | Sawyer Jon D | Director | Grant | 9K | $0.00 | $0 | 89K |
| 2026-05-14 | Pommeraud Larissa Tiffany | Director | Grant | 9K | $0.00 | $0 | 82K |
| 2026-04-20 | Pommeraud Larissa Tiffany | Director | Grant | 24K | $0.00 | $0 | 73K |
| 2026-04-20 | SIEGEL TODD E | Director | Grant | 31K | $0.00 | $0 | 146K |
| 2026-03-23 | Gordon Mark | Chief Executive Officer | Exercise or conversion | 150K | $0.41 | $62K | 632K |
| 2026-03-08 | Pommeraud Larissa Tiffany | Director | Grant | 7K | $0.00 | $0 | 49K |
| 2026-02-06 | SIEGEL TODD E | Director | Grant | 8K | $0.00 | $0 | 115K |
| 2026-02-06 | Pommeraud Larissa Tiffany | Director | Grant | 5K | $0.00 | $0 | 42K |
| 2026-01-06 | Pommeraud Larissa Tiffany | Director | Grant | 10K | $0.00 | $0 | 37K |
| 2026-01-06 | SIEGEL TODD E | Director | Grant | 8K | $0.00 | $0 | 107K |
| 2025-12-05 | Pommeraud Larissa Tiffany | Director | Grant | 5K | $0.00 | $0 | 26K |
| 2025-12-05 | SIEGEL TODD E | Director | Grant | 7K | $0.00 | $0 | 99K |
| 2025-12-05 | Sawyer Jon D | Director | Grant | 5K | $0.00 | $0 | 80K |
| 2025-11-06 | Sawyer Jon D | Director | Grant | 5K | $0.00 | $0 | 75K |
| 2025-11-06 | Pommeraud Larissa Tiffany | Director | Grant | 5K | $0.00 | $0 | 21K |
| 2025-11-06 | SIEGEL TODD E | Director | Grant | 7K | $0.00 | $0 | 92K |
| 2025-10-20 | Gordon Mark | Chief Executive Officer | Sell | 30K | $3.56 | $107K | 482K |
| 2025-10-17 | Gordon Mark | Chief Executive Officer | Sell | 30K | $3.50 | $105K | 512K |
| 2025-10-16 | Gordon Mark | Chief Executive Officer | Sell | 30K | $3.87 | $116K | 542K |
| 2025-10-15 | Gordon Mark | Chief Executive Officer | Sell | 30K | $3.98 | $119K | 572K |
| 2025-10-14 | Longley John D Jr | President & COO | Sell | 144K | $3.71 | $533K | 150K |
| 2025-10-14 | Longley John D Jr | President & COO | Exercise or conversion | 144K | $0.41 | $59K | 294K |
| 2025-10-14 | Longley John D Jr | President & COO | Sell | 74K | $3.75 | $276K | 150K |
| 2025-10-14 | Gordon Mark | Chief Executive Officer | Sell | 30K | $3.74 | $112K | 602K |
| 2025-10-13 | Longley John D Jr | President & COO | Sell | 39K | $3.50 | $136K | 224K |
| 2025-10-13 | Longley John D Jr | President & COO | Exercise or conversion | 7K | $0.41 | $3K | 263K |
| 2025-10-13 | Gordon Mark | Chief Executive Officer | Sell | 21K | $3.50 | $73K | 632K |
| 2025-07-31 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Exercise (in or at the money) | 1.9M | $1.10 | $2.1M | 3.9M |
| 2025-07-29 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Other transaction | 2.0M | $0.00 | $0 | 2.0M |
| 2025-07-29 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Other transaction | 2.0M | $0.00 | $0 | 0 |
| 2025-07-22 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Sell | 409K | $1.70 | $697K | 2.0M |
| 2025-07-18 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Sell | 474K | $1.72 | $817K | 2.4M |
| 2025-07-17 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Sell | 96K | $1.70 | $164K | 2.9M |
| 2025-07-15 | Pommeraud Larissa Tiffany | Director | Grant | 8K | $0.00 | $0 | 17K |
| 2025-06-30 | Cortina Gallardo Juan Antonio Carlos | 10% owner | Exercise (in or at the money) | 489K | $1.10 | $538K | 3.0M |
| 2025-06-27 | Longley John D Jr | President & COO | Grant | 144K | $1.04 | $150K | 256 |
| 2025-06-27 | Justh Mark B | Director | Grant | 385K | $1.04 | $400K | 859K |
| 2025-06-27 | Gordon Mark | Chief Executive Officer | Grant | 365K | $1.04 | $379K | 653K |
| 2025-04-14 | SIEGEL TODD E | Director | Grant | 28K | $0.00 | $0 | 85K |
| 2025-04-14 | Pommeraud Larissa Tiffany | Director | Grant | 8K | $0.00 | $0 | 8K |
| 2024-12-31 | Justh Mark B | Director | Buy | 50K | $0.64 | $32K | 551K |
| 2024-12-24 | Justh Mark B | Director | Buy | 250K | $0.55 | $138K | 501K |
| 2024-10-23 | SIEGEL TODD E | Director | Grant | 14K | $0.00 | $0 | 57K |
| 2024-04-08 | SIEGEL TODD E | Director | Grant | 3K | $0.00 | $0 | 43K |
| 2023-12-20 | Gordon Mark | Chief Executive Officer | Tax withholding | 33K | $3.13 | $103K | 268K |
| 2023-12-20 | Gordon Mark | Chief Executive Officer | Grant | 88K | $0.00 | $0 | 301K |
| 2023-12-20 | Longley John D Jr | President & COO | Grant | 42K | $0.00 | $0 | 127K |
| 2023-12-20 | Longley John D Jr | President & COO | Tax withholding | 16K | $3.13 | $49K | 112K |
| 2023-11-30 | SIEGEL TODD E | Director | Grant | 3K | $0.00 | $0 | 40K |
| 2023-06-09 | SIEGEL TODD E | Director | Grant | 5K | $0.00 | $0 | 37K |
| 2023-06-09 | Justh Mark B | Director | Grant | 5K | $0.00 | $0 | 251K |
| 2023-06-09 | Sawyer Jon D | Director | Grant | 5K | $0.00 | $0 | 70K |
| 2023-04-06 | Abbott John | Director | Sell | 17K | $3.03 | $51K | 0 |
| 2023-04-05 | Abbott John | Director | Sell | 42K | $3.05 | $129K | 17K |
| 2023-01-17 | Sawyer Jon D | Director | Grant | 9K | $0.00 | $0 | 65K |
| 2023-01-17 | SIEGEL TODD E | Director | Grant | 10K | $0.00 | $0 | 32K |
| 2023-01-17 | Abbott John | Director | Grant | 10K | $0.00 | $0 | 59K |
| 2023-01-17 | Justh Mark B | Director | Grant | 10K | $0.00 | $0 | 246K |
| 2023-01-17 | PIGNATELLI JAMES S | Director | Grant | 9K | $0.00 | $0 | 64K |
| 2022-09-30 | SIEGEL TODD E | Director | Grant | 4K | $0.00 | $0 | 21K |
| 2022-09-30 | Justh Mark B | Director | Grant | 4K | $0.00 | $0 | 236K |
| 2022-09-30 | PIGNATELLI JAMES S | Director | Grant | 4K | $0.00 | $0 | 55K |
| 2022-09-30 | Sawyer Jon D | Director | Grant | 4K | $0.00 | $0 | 55K |
| 2022-09-30 | Abbott John | Director | Grant | 4K | $0.00 | $0 | 49K |
| 2022-06-30 | SIEGEL TODD E | Director | Grant | 3K | $0.00 | $0 | 17K |
| 2022-06-30 | Justh Mark B | Director | Grant | 4K | $0.00 | $0 | 231K |
| 2022-06-30 | PIGNATELLI JAMES S | Director | Grant | 4K | $0.00 | $0 | 51K |
| 2022-06-30 | Abbott John | Director | Grant | 4K | $0.00 | $0 | 45K |
| 2022-06-30 | Sawyer Jon D | Director | Grant | 3K | $0.00 | $0 | 52K |
| 2022-06-15 | Barton Laura Lionetti | Chief Business Officer | Buy | 3K | $2.85 | $7K | 8K |
| 2022-04-30 | Nudi Jay | PAO/Treasurer | Grant | 32K | $0.00 | $0 | 110K |
| 2022-04-30 | Nudi Jay | PAO/Treasurer | Tax withholding | 13K | $5.94 | $75K | 98K |
| 2022-03-31 | PIGNATELLI JAMES S | Director | Grant | 2K | $0.00 | $0 | 48K |
| 2022-03-31 | Abbott John | Director | Grant | 3K | $0.00 | $0 | 41K |
| 2022-03-31 | Sawyer Jon D | Director | Grant | 2K | $0.00 | $0 | 48K |
| 2022-03-31 | Justh Mark B | Director | Grant | 2K | $0.00 | $0 | 227K |
| 2022-03-31 | SIEGEL TODD E | Director | Grant | 2K | $0.00 | $0 | 14K |
| 2022-03-15 | Longley John D Jr | President & COO | Grant | 42K | $0.00 | $0 | 101K |
| 2022-03-15 | Longley John D Jr | President & COO | Tax withholding | 16K | $5.85 | $91K | 86K |
| 2022-03-15 | Jones Christopher Emlyn | Chief Financial Officer | Grant | 3K | $0.00 | $0 | 3K |
| 2022-03-15 | Jones Christopher Emlyn | Chief Financial Officer | Tax withholding | 1K | $5.85 | $9K | 2K |
| 2022-03-15 | Gordon Mark | Chief Executive Officer | Grant | 88K | $0.00 | $0 | 246K |
| 2022-03-15 | Gordon Mark | Chief Executive Officer | Tax withholding | 33K | $5.85 | $193K | 213K |
| 2022-03-15 | Nudi Jay | PAO/Treasurer | Tax withholding | 12K | $5.85 | $69K | 79K |
| 2022-03-15 | Nudi Jay | PAO/Treasurer | Grant | 32K | $0.00 | $0 | 91K |
| 2022-03-15 | Barton Laura Lionetti | Chief Business Officer | Tax withholding | 13K | $5.85 | $75K | 78K |
| 2022-03-15 | Barton Laura Lionetti | Chief Business Officer | Grant | 34K | $0.00 | $0 | 91K |
| 2022-01-19 | PIGNATELLI JAMES S | Director | Grant | 8K | $0.00 | $0 | 46K |
| 2022-01-19 | Abbott John | Director | Grant | 8K | $0.00 | $0 | 38K |
| 2022-01-19 | SIEGEL TODD E | Director | Grant | 8K | $0.00 | $0 | 11K |
| 2022-01-19 | Justh Mark B | Director | Grant | 8K | $0.00 | $0 | 225K |
| 2022-01-19 | Sawyer Jon D | Director | Grant | 8K | $0.00 | $0 | 47K |
| 2021-09-28 | Justh Mark B | Director | Sell | 52K | $6.90 | $358K | 217K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON10 Form 144 notices on file for OMEX worth $1.5M at the prices reported; 0 in the last 90 days worth $0. Latest: MARK D GORDON filed on 2025-10-20 to sell 30,000 shares ($112K) from 2025-10-20.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2025-10-20 | MARK D GORDONDirector, Officer | 30K | $112K | 0.066% | 2025-10-20 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-17 | MARK D GORDONDirector, Officer | 30K | $98K | 0.066% | 2025-10-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-16 | MARK D GORDONDirector, Officer | 30K | $112K | 0.066% | 2025-10-16 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-15 | MARK D GORDONDirector, Officer | 30K | $124K | 0.066% | 2025-10-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | REV TR OF J D LONGLEY JR &W L LONGLEY U/A/D 1/15/2014Officer | 74K | $257K | 0.163% | 2025-10-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | JOHN D LONGLEY JR.Officer | 144K | $501K | 0.318% | 2025-10-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | JOHN D LONGLEY JR.Officer | 7K | $18K | 0.014% | 2025-10-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | REV TR OF J D LONGLEY JR &W L LONGLEY U/A/D 1/15/2014Officer | 32K | $92K | 0.072% | 2025-10-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | MARK D GORDONDirector, Officer | 30K | $105K | 0.066% | 2025-10-14 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-14 | MARK D GORDONDirector, Officer | 21K | $59K | 0.046% | 2025-10-13 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON9 holders report 5% or more of OMEX in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is Greywolf GP LLC at 10.9% of the class (6,394,323 shares), filed 2026-03-04 for an event on 2026-03-02.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-05-12 | 13G | Old West Investment Management, LLCinvestment adviser | 4.8M | 8.2% | 2026-03-31 |
| 2026-04-21 | 13G/Ano. 1 | Brumder William Georgeindividual | 100K | 0.2% | 2026-03-31 |
| 2026-04-13 | 13D | Two Seas Capital LPinvestment adviser, partnership | 5.9M | 10.0% | 2026-04-08 |
| 2026-04-13 | 13D | Two Seas Capital GP LLCparent holding company, other entity | 5.9M | 10.0% | 2026-04-08 |
| 2026-04-13 | 13D | Sina Toussiindividual, parent holding company | 5.9M | 10.0% | 2026-04-08 |
| 2026-03-04 | 13G/Ano. 1 | Greywolf GP LLCother entity | 6.4M | 10.9% | 2026-03-02 |
| 2026-03-04 | 13G/Ano. 1 | Greywolf Capital Management LPinvestment adviser, partnership | 6.4M | 10.9% | 2026-03-02 |
| 2026-03-04 | 13G/Ano. 1 | Jonathan Savitzindividual, parent holding company | 6.4M | 10.9% | 2026-03-02 |
| 2026-03-04 | 13G/Ano. 1 | Greywolf Opportunities Master Fund II LPpartnership | 6.1M | 10.4% | 2026-03-02 |
| 2026-03-04 | 13G/Ano. 1 | Greywolf Advisors LLCother entity | 6.1M | 10.4% | 2026-03-02 |
| 2026-02-17 | 13G/Ano. 8 | FourWorld Capital Management LLCinvestment adviser | 456K | 0.8% | 2025-12-31 |
| 2026-02-17 | 13G/Ano. 8 | John Addisindividual, parent holding company | 456K | 0.8% | 2025-12-31 |
13F holders
Tracked managers holding OMEX at their latest 13F. JSON1 of the 30 tracked managers held OMEX at their latest 13F, $68K in total at quarter-end prices. Two Sigma Investments is the largest at $68K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 0 added shares and 1 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Two Sigma Investments | 2026-06-30 | 79K | $68K | 0.00% | -13K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Odyssey Marine Exploration in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Odyssey Marine Exploration (OMEX), SEC CIK 798528, listed on Nasdaq, classified by the SEC as water transportation. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-03.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-13.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2025-10-20.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-05-12.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-06-30.JSON and CSV
- Company record
- EDGAR filing index for CIK 798528Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as water transportation
Other company pages
Datasets
Frequently Asked Questions
How much of OMEX is sold short?
4,766,804 shares were held short at the 2026-10-15 settlement, 18.6 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is OMEX's daily short volume?
On 2026-11-03, 7,505 of the 12,060 OMEX shares reported to FINRA were sold short, 62.2% of the day's reported volume. Short volume is a flow for one day, not a position.
Does OMEX have fails to deliver?
The SEC's latest file shows 4,000 OMEX shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are OMEX insiders buying or selling?
No open-market insider trades were reported for OMEX in the last 90 days. The most recent filings are listed below. Latest filing: Longley John D Jr (President & COO) on 2026-06-30.
Have OMEX insiders filed to sell?
10 Form 144 notices on file for OMEX worth $1.5M at the prices reported; 0 in the last 90 days worth $0. Latest: MARK D GORDON filed on 2025-10-20 to sell 30,000 shares ($112K) from 2025-10-20.
Who owns 5% or more of OMEX?
9 holders report 5% or more of OMEX in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is Greywolf GP LLC at 10.9% of the class (6,394,323 shares), filed 2026-03-04 for an event on 2026-03-02.
Which tracked 13F managers own OMEX?
1 of the 30 tracked 13F managers held OMEX shares at their latest filing, $68K in all. The largest: Two Sigma Investments (79K shares, $68K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.