John D. Longley Jr. - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
John D. Longley Jr. has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $945K.
Profile
John D. Longley Jr. is a corporate insider at ODYSSEY MARINE EXPLORATION INC ("OMEX"). Longley has reported 7 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | President & COO |
|---|---|
| Notability | 20/100 |
Board memberships
- ODYSSEY MARINE EXPLORATION INC
Awards & honors
- Leadership in deep-ocean exploration
- Management of mineral resource projects
Trading Pattern
InsiderAlpha's records for John D. Longley Jr. go back to 2024: 5 primary Form 4 filings, an average of 1.7 per year. 7 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role John D. Longley Jr. has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- President & COO at ODYSSEY MARINE EXPLORATION INC (OMEX) - 2 filings, 2024 to 2026
- President and COO at ODYSSEY MARINE EXPLORATION INC (OMEX) - 1 filing, 2025
- President COO at ODYSSEY MARINE EXPLORATION INC (OMEX) - 2 filings, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-02 | OMEX | ODYSSEY MARINE EXPLORATION INC | A - Grant or award | 4.2K | $0.00 | |
| 2025-10-13 | OMEX | ODYSSEY MARINE EXPLORATION INC | S - Open-market sale [10b5-1] | 143.5K | $3.71 | $533K |
| 2025-10-13 | OMEX | ODYSSEY MARINE EXPLORATION INC | M - Option exercise [10b5-1] | 143.5K | $0.41 | $59K |
| 2025-10-13 | OMEX | ODYSSEY MARINE EXPLORATION INC | S - Open-market sale [10b5-1] | 73.6K | $3.75 | $276K |
| 2025-10-13 | OMEX | ODYSSEY MARINE EXPLORATION INC | S - Open-market sale [10b5-1] | 39.0K | $3.50 | $136K |
| 2025-10-13 | OMEX | ODYSSEY MARINE EXPLORATION INC | M - Option exercise [10b5-1] | 6.5K | $0.41 | $3K |
| 2025-06-27 | OMEX | ODYSSEY MARINE EXPLORATION INC | A - Grant or award | 144.5K | $1.04 | $150K |
Companies - Last 90 Days
- ODYSSEY MARINE EXPLORATION INC (OMEX) - 1 filing, last 2026-07-02
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies John D. Longley Jr. has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Gallardo Juan Antonio Carlos Cortina - $1.68M of OMEX open-market activity in the last 12 months
- Mark Gordon - $633K of OMEX open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Marc Johnson
- James Jones
- Andrew T. Kaplan
- A. J. Kazimi
- Michael John Kazley
- Kennedy Lewis Investment Holdings II LLC
- KENNEDY LEWIS MANAGEMENT LP
- James M. Kilts
Frequently Asked Questions
Who is John D. Longley Jr.?
John D. Longley Jr. is a corporate insider at ODYSSEY MARINE EXPLORATION INC ("OMEX"). Longley has reported 7 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has John D. Longley Jr. submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has John D. Longley Jr. been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($945K) across all tracked filings.
Where can I see all of John D. Longley Jr.'s SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live John D. Longley Jr. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.