← United States · Coverage record
US · SEC FORM 4
ODYSSEY MARINE EXPLORATION INC
OMEX · Nasdaq · CIK 0000798528 · Industrials · Other Industrial Metals & Mining
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
9 Form 4 transaction lines observed in the same window
0 sales · 9 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
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Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2024-12-31 · Justh Mark B.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 4,189,178
- Previous report
- 4,650,003
- Avg daily volume
- 260,422
- Days to cover
- 16.1
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2024-12-31 | Justh Mark B | Purchase (P) | Common Stock | 50,000 | USD 0.64 | USD 32,000 | SEC filing ↗ |
| 2024-12-24 | Justh Mark B | Purchase (P) | Common Stock | 250,000 | USD 0.55 | USD 137,500 | SEC filing ↗ |
| 2022-06-15 | Barton Laura Lionetti | Purchase (P) | Common Stock | 2,500 | USD 2.85 | USD 7,125 | SEC filing ↗ |
| 2021-08-18 | Barton Laura Lionetti | Purchase (P) | Common Stock | 1,250 | USD 5.87 | USD 7,338 | SEC filing ↗ |
| 2021-05-25 | Justh Mark B | Purchase (P) | Common Stock | 10,000 | USD 6.01 | USD 60,100 | SEC filing ↗ |
| 2021-03-18 | Addis John; FourWorld Capital Management LLC | Purchase (P) | Common Stock, par value $.0001 per share | 9,250 | USD 6.59 | USD 60,958 | SEC filing ↗ |
| 2020-08-31 | Justh Mark B | Purchase (P) | Common Stock | 12,000 | USD 5.70 | USD 68,400 | SEC filing ↗ |
| 2020-03-20 | Longley John D Jr | Purchase (P) | Common Stock | 266 | USD 3.31 | USD 880 | SEC filing ↗ |
| 2020-03-19 | Longley John D Jr | Purchase (P) | Common Stock | 2,734 | USD 3.00 | USD 8,202 | SEC filing ↗ |
| 2020-03-17 | Justh Mark B | Purchase (P) | Common Stock | 20,000 | USD 2.91 | USD 58,200 | SEC filing ↗ |
Form 4 evidence
24 transaction lines in the latest 365-day window; 122 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | Longley John D Jr | Award / grant (A) | Common Stock | 4,167 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-30 | Gordon Mark | Tax withholding (F) | Common Stock | 1,139 | USD 0.85 | USD 968 | SEC filing ↗ |
| 2026-06-30 | Gordon Mark | Award / grant (A) | Common Stock | 4,167 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (24 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-06-30 | Longley John D Jr | Award / grant (A) | Common Stock | 4,167 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-30 | Gordon Mark | Tax withholding (F) | Common Stock | 1,139 | USD 0.85 | USD 968 | SEC filing ↗ |
| 2026-06-30 | Gordon Mark | Award / grant (A) | Common Stock | 4,167 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-01 | Sawyer Jon D | Option exercise / conversion (M) | Common Stock | 20,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-01 | SIEGEL TODD E | Option exercise / conversion (M) | Common Stock | 20,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-01 | Pommeraud Larissa Tiffany | Option exercise / conversion (M) | Common Stock | 20,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-01 | Justh Mark B | Option exercise / conversion (M) | Common Stock | 20,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-14 | Sawyer Jon D | Award / grant (A) | Common Stock | 9,346 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-14 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 9,346 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-20 | SIEGEL TODD E | Award / grant (A) | Common Stock | 31,475 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-20 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 23,981 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-23 | Gordon Mark | Option exercise / conversion (M) | Common Stock | 150,000 | USD 0.41 | USD 61,500 | SEC filing ↗ |
| 2026-03-08 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 6,803 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-06 | SIEGEL TODD E | Award / grant (A) | Common Stock | 7,937 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-06 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 5,291 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-06 | SIEGEL TODD E | Award / grant (A) | Common Stock | 7,653 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-06 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 10,204 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-12-05 | Sawyer Jon D | Award / grant (A) | Common Stock | 4,854 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-12-05 | SIEGEL TODD E | Award / grant (A) | Common Stock | 7,282 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-12-05 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 4,854 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-06 | Sawyer Jon D | Award / grant (A) | Common Stock | 4,695 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-06 | SIEGEL TODD E | Award / grant (A) | Common Stock | 7,042 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-06 | Pommeraud Larissa Tiffany | Award / grant (A) | Common Stock | 4,695 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-10-20 | Gordon Mark | Sale (S) | Common Stock | 30,000 | USD 3.56 | USD 106,800 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | OMEX |
| CIK | 0000798528 |
| Sector | Industrials |
| Industry | Other Industrial Metals & Mining Yahoo Finance |
| SEC SIC | 4400 Water Transportation |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 122 transaction lines from 2020-02-05 to 2026-06-30 10 P purchase lines · 15 S sale lines · 97 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.