Odyssey Marine Exploration, Inc.

OMEXNASDAQIndustrials● Active

$0.95

$-0.03(-2.68%)

Market Cap$29733872

P/E Ratio—

52W High$4.43

52W Low$0.737

Avg Volume5.7M

Open$1.03

Beta-0.23

Overview

Odyssey Marine Exploration, Inc. (OMEX) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · OMEX · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.00

Buy/Sell (by trades)

Overall sentiment

BEARISH

↑ Buy 0%Active transactions only · RSU vesting excluded100% Sell ↓

Odyssey Marine Exploration, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

OMEX insider buying and selling by quarter

OMEX insider selling · OMEX insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

6.9M3.4M0

2023 Q4

2024 Q1

2024 Q2

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2025 Q4

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · OMEX ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

OMEX executive sell shares · OMEX board member insider trading · OMEX insider trading SEC filing

Showing 53 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
Oct 16, 2025	Gordon Mark CEO · Director	Sale	30,000	$3.87	$116K	542,235	Form 4
Oct 17, 2025	Gordon Mark CEO · Director	Sale	30,000	$3.50	$105K	512,235	Form 4
Oct 20, 2025	Gordon Mark CEO · Director	Sale	30,000	$3.56	$107K	482,235	Form 4
Oct 14, 2025	Longley John D Jr President & COO	Option	143,500	$0.41	$59K	293,813	Form 4
Oct 13, 2025	Longley John D Jr President & COO	Option	6,500	$0.41	$3K	262,862	Form 4
Oct 13, 2025	Longley John D Jr President & COO	Sale	38,977	$3.50	$136K	223,885	Form 4
Oct 14, 2025	Longley John D Jr President & COO	Sale	73,572	$3.75	$276K	150,313	Form 4
Oct 14, 2025	Longley John D Jr President & COO	Sale	143,500	$3.71	$533K	150,313	Form 4
Oct 13, 2025	Gordon Mark CEO · Director	Sale	20,956	$3.50	$73K	632,235	Form 4
Oct 14, 2025	Gordon Mark CEO · Director	Sale	30,000	$3.74	$112K	602,235	Form 4
Oct 15, 2025	Gordon Mark CEO · Director	Sale	30,000	$3.98	$119K	572,235	Form 4
Jul 31, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Other	1,939,468	$1.10	$2.13M⚡	3,931,466	Form 4
Jun 30, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Other	489,279	$1.10	$538K	2,971,098	Form 4
Jul 17, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Sale	96,409	$1.70	$164K	2,874,689	Form 4
Jul 18, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Sale	473,591	$1.72	$817K	2,401,098	Form 4
Jul 29, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Other	1,991,998	—	—	1,991,998	Form 4
Jul 22, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Sale	409,100	$1.70	$697K	1,991,998	Form 4
Jul 29, 2025	Cortina Gallardo Juan Antonio Carlos 10 percent owner	Other	1,991,998	—	—	0	Form 4
Jul 15, 2025	Pommeraud Larissa Tiffany Director	Award	8,475	—	—	16,796	Form 4
Jun 27, 2025	Gordon Mark CEO · Director	Award	365,242	$1.04	$379K	653,191	Form 4
Jun 27, 2025	Justh Mark B Director	Award	385,242	$1.04	$400K	859,207	Form 4
Jun 27, 2025	Longley John D Jr President & COO	Award	144,466	$1.04	$150K	256.362	Form 4
Apr 14, 2025	SIEGEL TODD E Director	Award	28,083	—	—	84,988	Form 4
Apr 14, 2025	Pommeraud Larissa Tiffany Director	Award	8,321	—	—	8,321	Form 4
Dec 31, 2024	Justh Mark B Director	Purchase	50,000	$0.64	$32K	551,124	Form 4

Gordon Mark

CEO · Director

Sale

Date

Oct 16

30,000

Price

$3.87

Value

$116K

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Sale

Date

Oct 17

30,000

Price

$3.50

Value

$105K

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Sale

Date

Oct 20

30,000

Price

$3.56

Value

$107K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Option

Date

Oct 14

143,500

Price

$0.41

Value

$59K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Option

Date

Oct 13

6,500

Price

$0.41

Value

$3K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Sale

Date

Oct 13

38,977

Price

$3.50

Value

$136K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Sale

Date

Oct 14

73,572

Price

$3.75

Value

$276K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Sale

Date

Oct 14

143,500

Price

$3.71

Value

$533K

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Sale

Date

Oct 13

20,956

Price

$3.50

Value

$73K

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Sale

Date

Oct 14

30,000

Price

$3.74

Value

$112K

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Sale

Date

Oct 15

30,000

Price

$3.98

Value

$119K

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Other

Date

Jul 31

1,939,468

Price

$1.10

Value

$2.13M ⚡

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Other

Date

Jun 30

489,279

Price

$1.10

Value

$538K

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Sale

Date

Jul 17

96,409

Price

$1.70

Value

$164K

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Sale

Date

Jul 18

473,591

Price

$1.72

Value

$817K

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Other

Date

Jul 29

1,991,998

Price

—

Value

—

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Sale

Date

Jul 22

409,100

Price

$1.70

Value

$697K

View Form 4 on SEC.gov

Cortina Gallardo Juan Antonio Carlos

10 percent owner

Other

Date

Jul 29

1,991,998

Price

—

Value

—

View Form 4 on SEC.gov

Pommeraud Larissa Tiffany

Director

Award

Date

Jul 15

8,475

Price

—

Value

—

View Form 4 on SEC.gov

Gordon Mark

CEO · Director

Award

Date

Jun 27

365,242

Price

$1.04

Value

$379K

View Form 4 on SEC.gov

Justh Mark B

Director

Award

Date

Jun 27

385,242

Price

$1.04

Value

$400K

View Form 4 on SEC.gov

Longley John D Jr

President & COO

Award

Date

Jun 27

144,466

Price

$1.04

Value

$150K

View Form 4 on SEC.gov

SIEGEL TODD E

Director

Award

Date

Apr 14

28,083

Price

—

Value

—

View Form 4 on SEC.gov

Pommeraud Larissa Tiffany

Director

Award

Date

Apr 14

8,321

Price

—

Value

—

View Form 4 on SEC.gov

Justh Mark B

Director

Purchase

Date

Dec 31

50,000

Price

$0.64

Value

$32K

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 3

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About OMEX insider trading

OMEX insider trades

Odyssey Marine Exploration, Inc. (OMEX) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Gordon Mark (CEO · Director), Cortina Gallardo Juan Antonio Carlos (10 percent owner), Longley John D Jr (President & COO). Over the past 12 months, 5 insiders have filed transactions with the SEC. OMEX insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Odyssey Marine Exploration, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

OMEX insider trading · 5 questions

The insiders of Odyssey Marine Exploration, Inc. (OMEX) include executives and directors such as Gordon Mark (CEO · Director), Cortina Gallardo Juan Antonio Carlos (10 percent owner), Longley John D Jr (President & COO), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

OMEX board member insider tradingwho are OMEX insidersOMEX insider rosterOdyssey Marine Exploration, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026