OMEX

Odyssey Marine Exploration INC

Insider trading activity for Odyssey Marine Exploration INC, straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 6 months

net buying

Bought(0 · 0 insiders): $0
Sold(0 · 0 insiders): $0

Past 12 months

-$1.6M

net selling

Bought(0 · 0 insiders): $0
Sold(9 · 2 insiders): $1.6M

Transaction history

The 72 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Jun 30	Longley John D Jr	President & COO	MEXER◆	4,167	—	—	—	Open the original filing on SEC.gov
Jun 30	Longley John D Jr	President & COO	AGRANT	4,167	—	—	+2.8%	Open the original filing on SEC.gov
Jun 30	Gordon Mark	Chief Executive Officer	MEXER◆	4,167	—	—	—	Open the original filing on SEC.gov
Jun 30	Gordon Mark	Chief Executive Officer	FTAX	1,139	$0.8504	$969	-0.2%	Open the original filing on SEC.gov
Jun 30	Gordon Mark	Chief Executive Officer	AGRANT	4,167	—	—	+0.7%	Open the original filing on SEC.gov
Jun 1	Sawyer Jon D	Director	MEXER◆	20,000	—	—	—	Open the original filing on SEC.gov
Jun 1	Sawyer Jon D	Director	MEXER	20,000	—	—	+22.5%	Open the original filing on SEC.gov
Jun 1	Siegel Todd E	Director	MEXER◆	20,000	—	—	—	Open the original filing on SEC.gov
Jun 1	Siegel Todd E	Director	MEXER	20,000	—	—	+13.7%	Open the original filing on SEC.gov
Jun 1	Pommeraud Larissa…	Director	MEXER◆	20,000	—	—	—	Open the original filing on SEC.gov
Jun 1	Pommeraud Larissa…	Director	MEXER	20,000	—	—	+24.4%	Open the original filing on SEC.gov
Jun 1	Justh Mark B	Director	MEXER◆	20,000	—	—	—	Open the original filing on SEC.gov
Jun 1	Justh Mark B	Director	MEXER	20,000	—	—	+2.3%	Open the original filing on SEC.gov
May 14	Pommeraud Larissa…	Director	AGRANT	9,346	—	—	+12.9%	Open the original filing on SEC.gov
May 14	Sawyer Jon D	Director	AGRANT	9,346	—	—	+11.7%	Open the original filing on SEC.gov
Apr 20	Siegel Todd E	Director	AGRANT	31,475	—	—	+27.4%	Open the original filing on SEC.gov
Apr 20	Pommeraud Larissa…	Director	AGRANT	23,981	—	—	+49.3%	Open the original filing on SEC.gov
Mar 23	Gordon Mark	Chief Executive Officer	MEXER◆	150,000	—	—	—	Open the original filing on SEC.gov
Mar 23	Gordon Mark	Chief Executive Officer	MEXER	150,000	$0.4141	$62.1K	+31.1%	Open the original filing on SEC.gov
Mar 8	Pommeraud Larissa…	Director	AGRANT	6,803	—	—	+16.3%	Open the original filing on SEC.gov
Feb 6	Pommeraud Larissa…	Director	AGRANT	5,291	—	—	+14.5%	Open the original filing on SEC.gov
Feb 6	Siegel Todd E	Director	AGRANT	7,937	—	—	+7.4%	Open the original filing on SEC.gov
Jan 6	Siegel Todd E	Director	AGRANT	7,653	—	—	+7.7%	Open the original filing on SEC.gov
Jan 6	Pommeraud Larissa…	Director	AGRANT	10,204	—	—	+38.7%	Open the original filing on SEC.gov
Dec 5, 2025	Sawyer Jon D	Director	AGRANT	4,854	—	—	+6.5%	Open the original filing on SEC.gov
Dec 5, 2025	Siegel Todd E	Director	AGRANT	7,282	—	—	+7.9%	Open the original filing on SEC.gov
Dec 5, 2025	Pommeraud Larissa…	Director	AGRANT	4,854	—	—	+22.6%	Open the original filing on SEC.gov
Dec 2, 2025	Pommeraud Larissa…	Director	AGRANT◆	30,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Pommeraud Larissa…	Director	AGRANT◆	20,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Siegel Todd E	Director	AGRANT◆	30,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Siegel Todd E	Director	AGRANT◆	20,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Sawyer Jon D	Director	AGRANT◆	30,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Sawyer Jon D	Director	AGRANT◆	20,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Longley John D Jr	President and COO	AGRANT◆	100,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Longley John D Jr	President and COO	AGRANT◆	25,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Justh Mark B	Director	AGRANT◆	30,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Justh Mark B	Director	AGRANT◆	20,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Gordon Mark	Chief Executive Officer	AGRANT◆	100,000	—	—	—	Open the original filing on SEC.gov
Dec 2, 2025	Gordon Mark	Chief Executive Officer	AGRANT◆	25,000	—	—	—	Open the original filing on SEC.gov
Nov 6, 2025	Siegel Todd E	Director	AGRANT	7,042	—	—	+8.3%	Open the original filing on SEC.gov
Nov 6, 2025	Pommeraud Larissa…	Director	AGRANT	4,695	—	—	+28.0%	Open the original filing on SEC.gov
Nov 6, 2025	Sawyer Jon D	Director	AGRANT	4,695	—	—	+6.7%	Open the original filing on SEC.gov
Oct 20, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	30,000	$3.56	$106.9K	-5.9%	Open the original filing on SEC.gov
Oct 17, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	30,000	$3.50	$105K	-5.5%	Open the original filing on SEC.gov
Oct 16, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	30,000	$3.87	$116K	-5.2%	Open the original filing on SEC.gov
Oct 15, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	30,000	$3.98	$119.4K	-5.0%	Open the original filing on SEC.gov
Oct 14, 2025	Longley John D Jr	President & COO	MEXER◷◆	143,500	—	—	—	Open the original filing on SEC.gov
Oct 14, 2025	Longley John D Jr	President & COO	SSELL◷	143,500	$3.71	$532.9K	-48.8%	Open the original filing on SEC.gov
Oct 14, 2025	Longley John D Jr	President & COO	MEXER◷	143,500	$0.4141	$59.4K	+95.5%	Open the original filing on SEC.gov
Oct 14, 2025	Longley John D Jr	President & COO	SSELL◷	73,572	$3.75	$275.6K	-32.9%	Open the original filing on SEC.gov
Oct 14, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	30,000	$3.74	$112.1K	-4.8%	Open the original filing on SEC.gov
Oct 13, 2025	Longley John D Jr	President & COO	MEXER◷◆	6,500	—	—	—	Open the original filing on SEC.gov
Oct 13, 2025	Longley John D Jr	President & COO	SSELL◷	38,977	$3.50	$136.4K	-14.8%	Open the original filing on SEC.gov
Oct 13, 2025	Longley John D Jr	President & COO	MEXER◷	6,500	$0.4141	$2.7K	+2.5%	Open the original filing on SEC.gov
Oct 13, 2025	Gordon Mark	Chief Executive Officer	SSELL◷	20,956	$3.50	$73.3K	-3.2%	Open the original filing on SEC.gov
Jul 31, 2025	Cortina Gallardo Juan…	10% Owner	XXITM◆	1.9M	$1.10	$2.1M	—	Open the original filing on SEC.gov
Jul 31, 2025	Cortina Gallardo Juan…	10% Owner	XXITM	1.9M	$1.10	$2.1M	+97.4%	Open the original filing on SEC.gov
Jul 29, 2025	Cortina Gallardo Juan…	10% Owner	JOTHER	2M	—	—	—	Open the original filing on SEC.gov
Jul 29, 2025	Cortina Gallardo Juan…	10% Owner	JOTHER	2M	—	—	-100.0%	Open the original filing on SEC.gov
Jul 25, 2025	Cortina Gallardo Juan…	10% Owner	JOTHER◆	1.9M	—	—	—	Open the original filing on SEC.gov
Jul 25, 2025	Cortina Gallardo Juan…	10% Owner	JOTHER◆	1.9M	—	—	—	Open the original filing on SEC.gov
Jul 22, 2025	Cortina Gallardo Juan…	10% Owner	SSELL	409,100	$1.70	$696.7K	-17.0%	Open the original filing on SEC.gov
Jul 18, 2025	Cortina Gallardo Juan…	10% Owner	SSELL	473,591	$1.72	$816.7K	-16.5%	Open the original filing on SEC.gov
Jul 17, 2025	Cortina Gallardo Juan…	10% Owner	SSELL	96,409	$1.70	$164.2K	-3.2%	Open the original filing on SEC.gov
Jul 15, 2025	Pommeraud Larissa…	Director	AGRANT	8,475	—	—	+101.8%	Open the original filing on SEC.gov
Jun 30, 2025	Cortina Gallardo Juan…	10% Owner	XXITM◆	489,279	$1.10	$538.2K	—	Open the original filing on SEC.gov
Jun 30, 2025	Cortina Gallardo Juan…	10% Owner	XXITM	489,279	$1.10	$538.2K	+19.7%	Open the original filing on SEC.gov
Jun 27, 2025	Longley John D Jr	President & COO	AGRANT	144,466	$1.04	$150K	—	Open the original filing on SEC.gov
Jun 27, 2025	Justh Mark B	Director	AGRANT	385,242	$1.04	$400K	+81.3%	Open the original filing on SEC.gov
Jun 27, 2025	Gordon Mark	Chief Executive Officer	AGRANT	365,242	$1.04	$379.2K	+126.8%	Open the original filing on SEC.gov
Apr 14, 2025	Siegel Todd E	Director	AGRANT	28,083	—	—	+49.4%	Open the original filing on SEC.gov
Apr 14, 2025	Pommeraud Larissa…	Director	AGRANT	8,321	—	—	—	Open the original filing on SEC.gov

MEXER◆—

Longley John D Jr · President & COOJun 30

4,167 sh

AGRANT—

Longley John D Jr · President & COOJun 30

4,167 sh · +2.8% own

MEXER◆—

Gordon Mark · Chief Executive…Jun 30

4,167 sh

FTAX$969

Gordon Mark · Chief Executive…Jun 30

1,139 sh @ $0.8504 · -0.2% own

AGRANT—

Gordon Mark · Chief Executive…Jun 30

4,167 sh · +0.7% own

MEXER◆—

Sawyer Jon D · DirectorJun 1

20,000 sh

MEXER—

Sawyer Jon D · DirectorJun 1

20,000 sh · +22.5% own

MEXER◆—

Siegel Todd E · DirectorJun 1

20,000 sh

MEXER—

Siegel Todd E · DirectorJun 1

20,000 sh · +13.7% own

MEXER◆—

Pommeraud Larissa… · DirectorJun 1

20,000 sh

MEXER—

Pommeraud Larissa… · DirectorJun 1

20,000 sh · +24.4% own

MEXER◆—

Justh Mark B · DirectorJun 1

20,000 sh

MEXER—

Justh Mark B · DirectorJun 1

20,000 sh · +2.3% own

AGRANT—

Pommeraud Larissa… · DirectorMay 14

9,346 sh · +12.9% own

AGRANT—

Sawyer Jon D · DirectorMay 14

9,346 sh · +11.7% own

AGRANT—

Siegel Todd E · DirectorApr 20

31,475 sh · +27.4% own

AGRANT—

Pommeraud Larissa… · DirectorApr 20

23,981 sh · +49.3% own

MEXER◆—

Gordon Mark · Chief Executive…Mar 23

150,000 sh

MEXER$62.1K

Gordon Mark · Chief Executive…Mar 23

150,000 sh @ $0.4141 · +31.1% own

AGRANT—

Pommeraud Larissa… · DirectorMar 8

6,803 sh · +16.3% own

AGRANT—

Pommeraud Larissa… · DirectorFeb 6

5,291 sh · +14.5% own

AGRANT—

Siegel Todd E · DirectorFeb 6

7,937 sh · +7.4% own

AGRANT—

Siegel Todd E · DirectorJan 6

7,653 sh · +7.7% own

AGRANT—

Pommeraud Larissa… · DirectorJan 6

10,204 sh · +38.7% own

AGRANT—

Sawyer Jon D · DirectorDec 5, 2025

4,854 sh · +6.5% own

AGRANT—

Siegel Todd E · DirectorDec 5, 2025

7,282 sh · +7.9% own

AGRANT—

Pommeraud Larissa… · DirectorDec 5, 2025

4,854 sh · +22.6% own

AGRANT◆—

Pommeraud Larissa… · DirectorDec 2, 2025

30,000 sh

AGRANT◆—

Pommeraud Larissa… · DirectorDec 2, 2025

20,000 sh

AGRANT◆—

Siegel Todd E · DirectorDec 2, 2025

30,000 sh

AGRANT◆—

Siegel Todd E · DirectorDec 2, 2025

20,000 sh

AGRANT◆—

Sawyer Jon D · DirectorDec 2, 2025

30,000 sh

AGRANT◆—

Sawyer Jon D · DirectorDec 2, 2025

20,000 sh

AGRANT◆—

Longley John D Jr · President and COODec 2, 2025

100,000 sh

AGRANT◆—

Longley John D Jr · President and COODec 2, 2025

25,000 sh

AGRANT◆—

Justh Mark B · DirectorDec 2, 2025

30,000 sh

AGRANT◆—

Justh Mark B · DirectorDec 2, 2025

20,000 sh

AGRANT◆—

Gordon Mark · Chief Executive…Dec 2, 2025

100,000 sh

AGRANT◆—

Gordon Mark · Chief Executive…Dec 2, 2025

25,000 sh

AGRANT—

Siegel Todd E · DirectorNov 6, 2025

7,042 sh · +8.3% own

AGRANT—

Pommeraud Larissa… · DirectorNov 6, 2025

4,695 sh · +28.0% own

AGRANT—

Sawyer Jon D · DirectorNov 6, 2025

4,695 sh · +6.7% own

SSELL◷$106.9K

Gordon Mark · Chief Executive…Oct 20, 2025

30,000 sh @ $3.56 · -5.9% own

SSELL◷$105K

Gordon Mark · Chief Executive…Oct 17, 2025

30,000 sh @ $3.50 · -5.5% own

SSELL◷$116K

Gordon Mark · Chief Executive…Oct 16, 2025

30,000 sh @ $3.87 · -5.2% own

SSELL◷$119.4K

Gordon Mark · Chief Executive…Oct 15, 2025

30,000 sh @ $3.98 · -5.0% own

MEXER◷◆—

Longley John D Jr · President & COOOct 14, 2025

143,500 sh

SSELL◷$532.9K

Longley John D Jr · President & COOOct 14, 2025

143,500 sh @ $3.71 · -48.8% own

MEXER◷$59.4K

Longley John D Jr · President & COOOct 14, 2025

143,500 sh @ $0.4141 · +95.5% own

SSELL◷$275.6K

Longley John D Jr · President & COOOct 14, 2025

73,572 sh @ $3.75 · -32.9% own

SSELL◷$112.1K

Gordon Mark · Chief Executive…Oct 14, 2025

30,000 sh @ $3.74 · -4.8% own

MEXER◷◆—

Longley John D Jr · President & COOOct 13, 2025

6,500 sh

SSELL◷$136.4K

Longley John D Jr · President & COOOct 13, 2025

38,977 sh @ $3.50 · -14.8% own

MEXER◷$2.7K

Longley John D Jr · President & COOOct 13, 2025

6,500 sh @ $0.4141 · +2.5% own

SSELL◷$73.3K

Gordon Mark · Chief Executive…Oct 13, 2025

20,956 sh @ $3.50 · -3.2% own

XXITM◆$2.1M

Cortina Gallardo Juan… · 10% OwnerJul 31, 2025

1.9M sh @ $1.10

XXITM$2.1M

Cortina Gallardo Juan… · 10% OwnerJul 31, 2025

1.9M sh @ $1.10 · +97.4% own

JOTHER—

Cortina Gallardo Juan… · 10% OwnerJul 29, 2025

2M sh

JOTHER—

Cortina Gallardo Juan… · 10% OwnerJul 29, 2025

2M sh · -100.0% own

JOTHER◆—

Cortina Gallardo Juan… · 10% OwnerJul 25, 2025

1.9M sh

JOTHER◆—

Cortina Gallardo Juan… · 10% OwnerJul 25, 2025

1.9M sh

SSELL$696.7K

Cortina Gallardo Juan… · 10% OwnerJul 22, 2025

409,100 sh @ $1.70 · -17.0% own

SSELL$816.7K

Cortina Gallardo Juan… · 10% OwnerJul 18, 2025

473,591 sh @ $1.72 · -16.5% own

SSELL$164.2K

Cortina Gallardo Juan… · 10% OwnerJul 17, 2025

96,409 sh @ $1.70 · -3.2% own

AGRANT—

Pommeraud Larissa… · DirectorJul 15, 2025

8,475 sh · +101.8% own

XXITM◆$538.2K

Cortina Gallardo Juan… · 10% OwnerJun 30, 2025

489,279 sh @ $1.10

XXITM$538.2K

Cortina Gallardo Juan… · 10% OwnerJun 30, 2025

489,279 sh @ $1.10 · +19.7% own

AGRANT$150K

Longley John D Jr · President & COOJun 27, 2025

144,466 sh @ $1.04

AGRANT$400K

Justh Mark B · DirectorJun 27, 2025

385,242 sh @ $1.04 · +81.3% own

AGRANT$379.2K

Gordon Mark · Chief Executive…Jun 27, 2025

365,242 sh @ $1.04 · +126.8% own

AGRANT—

Siegel Todd E · DirectorApr 14, 2025

28,083 sh · +49.4% own

AGRANT—

Pommeraud Larissa… · DirectorApr 14, 2025

8,321 sh

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

4 of 38 filings we hold were filed after the two-business-day deadline. The furthest past the deadline was 28 business days late.

Form 4 filings made after the two-business-day deadline, with the transaction date, the filing date and the number of business days between them.
Traded	Filed	Insider	Past deadline	Largest line	Source
Jun 30, 2025	Aug 12, 2025	Cortina Gallardo Juan…10% Owner	28days	$2.1M	Filing ↗
Jun 27, 2025	Jul 2, 2025	Gordon MarkChief Executive Officer	1day	$379.2K	Filing ↗
Jun 27, 2025	Jul 2, 2025	Justh Mark BDirector	1day	$400K	Filing ↗
Jun 27, 2025	Jul 2, 2025	Longley John D JrPresident & COO	1day	$150K	Filing ↗

Cortina Gallardo Juan…10% Owner

28days

Traded Jun 30, 2025 · filed Aug 12, 2025Filing ↗

Gordon MarkChief Executive Officer

1day

Traded Jun 27, 2025 · filed Jul 2, 2025Filing ↗

Justh Mark BDirector

1day

Traded Jun 27, 2025 · filed Jul 2, 2025Filing ↗

Longley John D JrPresident & COO

1day

Traded Jun 27, 2025 · filed Jul 2, 2025Filing ↗

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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