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United States

Odyssey Marine Exploration Inc (OMEX)

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The most recent insider trading activity occurred on October 20, 2025. This involved planned and proposed sales by executives, including the CEO and Director, totaling significant share volumes. Notably, John D. Longley Jr. also engaged in substantial planned and proposed sales around the same period.
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Ticker: OMEX Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
MARK D GORDON
Director; Officer
1 sale — total 111,750 USD
Proposed sale 20 Oct 2025
Value US$3,227,632.59 | Price 323.80 | Shares 47,530
Planned sale 20 Oct 2025
Value US$1,630,042.92 | Price 101.46 | Shares 46,474
Planned sale 17 Oct 2025
Value US$105,000.00 | Price 3.50 | Shares 30,000
Proposed sale 17 Oct 2025
Value US$97,500.00 | Price 3.25 | Shares 30,000
Planned sale 16 Oct 2025
Value US$116,043.00 | Price 3.87 | Shares 30,000
Proposed sale 16 Oct 2025
Value US$111,900.00 | Price 3.73 | Shares 30,000
Proposed sale 15 Oct 2025
Value US$123,600.00 | Price 4.12 | Shares 30,000
Planned sale 15 Oct 2025
Value US$119,370.00 | Price 3.98 | Shares 30,000
Planned sale 14 Oct 2025
Value US$532,930.30 | Price 3.71 | Shares 143,500
Planned sale 14 Oct 2025
Value US$275,578.64 | Price 3.75 | Shares 73,572
Planned sale 14 Oct 2025
Value US$112,086.00 | Price 3.74 | Shares 30,000
Proposed sale 14 Oct 2025
Value US$256,766.28 | Price 3.49 | Shares 73,572
Proposed sale 14 Oct 2025
Value US$500,815.00 | Price 3.49 | Shares 143,500
Proposed sale 14 Oct 2025
Value US$104,700.00 | Price 3.49 | Shares 30,000
Planned sale 13 Oct 2025
Value US$136,419.50 | Price 3.50 | Shares 38,977
Planned sale 13 Oct 2025
Value US$73,346.00 | Price 3.50 | Shares 20,956
Proposed sale 13 Oct 2025
Value US$18,330.00 | Price 2.82 | Shares 6,500
Proposed sale 13 Oct 2025
Value US$59,095.92 | Price 2.82 | Shares 20,956
Proposed sale 13 Oct 2025
Value US$91,585.14 | Price 2.82 | Shares 32,477
Sale 22 Jul 2025
Value US$696,656.39 | Price 1.70 | Shares 409,100
Sale 18 Jul 2025
Value US$816,707.68 | Price 1.72 | Shares 473,591
Sale 17 Jul 2025
Value US$164,155.60 | Price 1.70 | Shares 96,409
Buy 31 Dec 2024
Value US$32,235.00 | Price 0.64 | Shares 50,000
Buy 24 Dec 2024
Value US$137,500.00 | Price 0.55 | Shares 250,000
Proposed sale 27 Sep 2023
Value US$233,158.66 | Price 3.71 | Shares 62,846
Sale 6 Apr 2023
Value US$51,273.66 | Price 3.03 | Shares 16,922
Sale 5 Apr 2023
Value US$128,758.80 | Price 3.05 | Shares 42,216
Buy 15 Jun 2022
Value US$7,125.00 | Price 2.85 | Shares 2,500
Buy 18 Mar 2021
Value US$60,985.25 | Price 6.59 | Shares 9,250
Buy 31 Aug 2020
Value US$68,400.00 | Price 5.70 | Shares 12,000
Buy 20 Mar 2020
Value US$880.46 | Price 3.31 | Shares 266
Buy 19 Mar 2020
Value US$8,202.00 | Price 3.00 | Shares 2,734
Buy 17 Mar 2020
Value US$58,200.00 | Price 2.91 | Shares 20,000
Buy 30 Dec 2019
Value US$12,680.00 | Price 3.17 | Shares 4,000
Buy 27 Dec 2019
Value US$82,940.00 | Price 3.19 | Shares 26,000
Buy 25 Jun 2019
Value US$98,750.96 | Price 5.06 | Shares 19,516
Buy 1 May 2019
Value US$102,400.00 | Price 5.12 | Shares 20,000
Buy 23 Oct 2018
Value US$5,031.00 | Price 6.45 | Shares 780
Buy 22 Oct 2018
Value US$131,800.00 | Price 6.59 | Shares 20,000
Buy 23 May 2018
Value US$41,750.00 | Price 8.35 | Shares 5,000
Buy 22 May 2018
Value US$100,100.00 | Price 9.10 | Shares 11,000
Buy 13 Nov 2017
Value US$54,543.03 | Price 3.83 | Shares 14,241
Buy 10 Nov 2017
Value US$82,560.00 | Price 3.84 | Shares 21,500
Buy 18 Oct 2013
Value US$117,140.20 | Price 2.63 | Shares 44,540
Buy 25 Jul 2013
Value US$249,750.00 | Price 3.33 | Shares 75,000
Buy 7 Mar 2013
Value US$129,200.00 | Price 3.40 | Shares 38,000
Sale 12 Nov 2012
Value US$5,400.20 | Price 2.70 | Shares 2,000
Sale 12 Nov 2012
Value US$13,500.00 | Price 2.70 | Shares 5,000
Sale 12 Nov 2012
Value US$27,027.00 | Price 2.70 | Shares 10,000
Sale 12 Nov 2012
Value US$27,115.00 | Price 2.71 | Shares 10,000
Sale 12 Nov 2012
Value US$27,160.00 | Price 2.72 | Shares 10,000
Sale 19 Jul 2012
Value US$31,000.00 | Price 4.00 | Shares 7,750
Sale 14 Mar 2012
Value US$47,518.50 | Price 3.17 | Shares 15,000
Sale 12 Jun 2008
Value US$4,890.00 | Price 4.89 | Shares 1,000
Sale 12 Jun 2008
Value US$4,930.00 | Price 4.93 | Shares 1,000
Sale 12 Jun 2008
Value US$1,479.99 | Price 4.93 | Shares 300
Sale 12 Jun 2008
Value US$992.00 | Price 4.96 | Shares 200
Sale 12 Jun 2008
Value US$4,930.00 | Price 4.93 | Shares 1,000
Sale 12 Jun 2008
Value US$2,430.00 | Price 4.86 | Shares 500
Sale 12 Jun 2008
Value US$4,880.00 | Price 4.88 | Shares 1,000
Sale 12 Jun 2008
Value US$2,440.00 | Price 4.88 | Shares 500
Sale 12 Jun 2008
Value US$2,425.00 | Price 4.85 | Shares 500
Sale 12 Jun 2008
Value US$4,820.00 | Price 4.82 | Shares 1,000
Sale 12 Jun 2008
Value US$1,680.00 | Price 4.80 | Shares 350
Planned sale 11 Mar 2008
Value US$56,500.00 | Price 5.65 | Shares 10,000
Planned sale 4 Mar 2008
Value US$79,500.00 | Price 5.30 | Shares 15,000
Sale 29 Feb 2008
Value US$24,300.00 | Price 4.86 | Shares 5,000
Sale 29 Feb 2008
Value US$24,350.00 | Price 4.87 | Shares 5,000
Sale 27 Feb 2008
Value US$26,750.00 | Price 5.35 | Shares 5,000
Sale 27 Feb 2008
Value US$26,500.00 | Price 5.30 | Shares 5,000
Planned sale 31 Jan 2008
Value US$13,234.00 | Price 5.09 | Shares 2,600
Planned sale 31 Jan 2008
Value US$8,128.00 | Price 5.08 | Shares 1,600
Planned sale 31 Jan 2008
Value US$33,462.00 | Price 5.07 | Shares 6,600
Planned sale 31 Jan 2008
Value US$4,554.00 | Price 5.06 | Shares 900
Planned sale 31 Jan 2008
Value US$16,665.00 | Price 5.05 | Shares 3,300
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-10-20 2025-10-20 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
47,530
323.80
US$3,227,633 		47,530 323.80 US$3,227,633
2025-10-20 2025-10-20 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
46,474 -22.3%
101.46
US$1,630,043 		46,474 -22.3% 101.46 US$1,630,043
2025-10-20 2025-10-17 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
22,539 +21.7%
158.88
US$191,654 		22,539 +21.7% 158.88 US$191,654
2025-10-17 2025-10-17 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
30,000
3.25
US$97,500 		30,000 3.25 US$97,500
2025-10-20 2025-10-16 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
30,000 -5.2%
3.87
US$116,043 		30,000 -5.2% 3.87 US$116,043
2025-10-16 2025-10-16 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
30,000
3.73
US$111,900 		30,000 3.73 US$111,900
2025-10-15 2025-10-15 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
30,000
4.12
US$123,600 		30,000 4.12 US$123,600
2025-10-15 2025-10-15 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
30,000 -5.0%
3.98
US$119,370 		30,000 -5.0% 3.98 US$119,370
2025-10-15 2025-10-14 PlS Planned sale
3.6
Longley John D Jr

President & COO

Officer
143,500 -48.8%
3.71
US$532,930 		143,500 -48.8% 3.71 US$532,930
2025-10-15 2025-10-14 PlS Planned sale
3.6
Longley John D Jr

President & COO

Officer
73,572 -32.9%
3.75
US$275,579 		73,572 -32.9% 3.75 US$275,579
2025-10-15 2025-10-14 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
30,000 -4.7%
3.74
US$112,086 		30,000 -4.7% 3.74 US$112,086
2025-10-14 2025-10-14 PrS Proposed sale
3.6
REV TR OF J D LONGLEY JR &W L LONGLEY U/A/D 1/15/2014

Officer

Officer
73,572
3.49
US$256,766 		73,572 3.49 US$256,766
2025-10-14 2025-10-14 PrS Proposed sale
3.6
JOHN D LONGLEY JR.

Officer

Officer
143,500
3.49
US$500,815 		143,500 3.49 US$500,815
2025-10-14 2025-10-14 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
30,000
3.49
US$104,700 		30,000 3.49 US$104,700
2025-10-15 2025-10-13 PlS Planned sale
3.6
Longley John D Jr

President & COO

Officer
38,977 -14.8%
3.50
US$136,420 		38,977 -14.8% 3.50 US$136,420
2025-10-15 2025-10-13 PlS Planned sale
Gordon Mark

Chief Executive Officer

Executive Director
20,956 -3.2%
3.50
US$73,346 		20,956 -3.2% 3.50 US$73,346
2025-10-14 2025-10-13 PrS Proposed sale
3.6
JOHN D LONGLEY JR.

Officer

Officer
6,500
2.82
US$18,330 		6,500 2.82 US$18,330
2025-10-14 2025-10-13 PrS Proposed sale
MARK D GORDON

Director; Officer

Executive Director
20,956
2.82
US$59,096 		20,956 2.82 US$59,096
2025-10-14 2025-10-13 PrS Proposed sale
3.6
REV TR OF J D LONGLEY JR &W L LONGLEY U/A/D 1/15/2014

Officer

Officer
32,477
2.82
US$91,585 		32,477 2.82 US$91,585
2025-08-13 2025-07-22 S Sale
1.5
Cortina Gallardo Juan Antonio Carlos
Large shareholder
409,100 -17.0%
1.70
US$696,656 		409,100 -17.0% 1.70 US$696,656
2025-08-13 2025-07-18 S Sale
1.5
Cortina Gallardo Juan Antonio Carlos
Large shareholder
473,591 -16.5%
1.72
US$816,708 		473,591 -16.5% 1.72 US$816,708
2025-08-13 2025-07-17 S Sale
1.5
Cortina Gallardo Juan Antonio Carlos
Large shareholder
96,409 -3.2%
1.70
US$164,156 		96,409 -3.2% 1.70 US$164,156
2025-01-03 2024-12-31 B Purchase
3.0
Justh Mark B
Non-Executive Director
50,000 +10.0%
0.64
US$32,235 		50,000 +10.0% 0.64 US$32,235
2024-12-26 2024-12-24 B Purchase
3.0
Justh Mark B
Non-Executive Director
250,000 +99.6%
0.55
US$137,500 		250,000 +99.6% 0.55 US$137,500
2023-09-26 2023-09-27 PrS Proposed sale
Jones Christopher Emlyn

Officer

Officer
62,846
3.71
US$233,159 		62,846 3.71 US$233,159
2023-04-07 2023-04-06 S Sale
1.5
Abbott John
Non-Executive Director
16,922 -100.0%
3.03
US$51,274 		16,922 -100.0% 3.03 US$51,274
2023-04-07 2023-04-05 S Sale
1.5
Abbott John
Non-Executive Director
42,216 -71.4%
3.05
US$128,759 		42,216 -71.4% 3.05 US$128,759
2022-06-17 2022-06-15 B Purchase
2.2
Barton Laura Lionetti

Chief Business Officer

Executive Director
2,500 +50.0%
2.85
US$7,125 		2,500 +50.0% 2.85 US$7,125
2021-03-22 2021-03-18 B Purchase
1.4
FourWorld Capital Management LLC
Large shareholder
9,250 +1.0%
6.59
US$60,985 		9,250 +1.0% 6.59 US$60,985
2020-09-01 2020-08-31 B Purchase
3.0
Justh Mark B
Non-Executive Director
12,000 +4.9%
5.70
US$68,400 		12,000 +4.9% 5.70 US$68,400
2020-03-23 2020-03-20 B Purchase
3.6
Longley John D Jr

President & COO

Officer
266 +0.6%
3.31
US$880 		266 +0.6% 3.31 US$880
2020-03-23 2020-03-19 B Purchase
3.6
Longley John D Jr

President & COO

Officer
2,734 +6.2%
3.00
US$8,202 		2,734 +6.2% 3.00 US$8,202
2020-03-19 2020-03-17 B Purchase
3.0
Justh Mark B
Non-Executive Director
20,000 +9.0%
2.91
US$58,200 		20,000 +9.0% 2.91 US$58,200
2020-01-02 2019-12-30 B Purchase
3.0
Justh Mark B
4,000 +2.0%
3.17
US$12,680 		4,000 +2.0% 3.17 US$12,680
2019-12-31 2019-12-27 B Purchase Justh Mark B Non-Executive Director
26,000 +14.9%
3.19
US$82,940 		26,000 +14.9% 3.19 US$82,940
2019-06-27 2019-06-25 B Purchase
3.0
Justh Mark B
19,516 +12.6%
5.06
US$98,751 		19,516 +12.6% 5.06 US$98,751
2019-05-02 2019-05-01 B Purchase
3.0
Justh Mark B
20,000 +15.0%
5.12
US$102,400 		20,000 +15.0% 5.12 US$102,400
2018-10-24 2018-10-23 B Purchase Nudi Jay

CFO/Treasurer

Officer
780 +2.1%
6.45
US$5,031 		780 +2.1% 6.45 US$5,031
2018-10-23 2018-10-22 B Purchase Justh Mark B Non-Executive Director
20,000 +17.6%
6.59
US$131,800 		20,000 +17.6% 6.59 US$131,800
2018-05-24 2018-05-23 B Purchase Justh Mark B Non-Executive Director
5,000 +4.6%
8.35
US$41,750 		5,000 +4.6% 8.35 US$41,750
2018-05-24 2018-05-22 B Purchase Justh Mark B Non-Executive Director
11,000 +11.3%
9.10
US$100,100 		11,000 +11.3% 9.10 US$100,100
2017-11-14 2017-11-13 B Purchase Justh Mark B
14,241 +17.1%
3.83
US$54,543 		14,241 +17.1% 3.83 US$54,543
2017-11-14 2017-11-10 B Purchase Justh Mark B
21,500 +34.9%
3.84
US$82,560 		21,500 +34.9% 3.84 US$82,560
2013-10-22 2013-10-18 B Purchase SAUL DAVID J Non-Executive Director
44,540 +4.4%
2.63
US$117,140 		44,540 +4.4% 2.63 US$117,140
2013-07-29 2013-07-25 B Purchase Justh Mark B Non-Executive Director
75,000 +375.0%
3.33
US$249,750 		75,000 +375.0% 3.33 US$249,750
2013-03-08 2013-03-07 B Purchase SAUL DAVID J Non-Executive Director
38,000 +4.0%
3.40
US$129,200 		38,000 +4.0% 3.40 US$129,200
2012-11-14 2012-11-12 S Sale Holmes Michael J

CFO

Officer
2,000 -1.6%
2.70
US$5,400 		2,000 -1.6% 2.70 US$5,400
2012-11-14 2012-11-12 S Sale Holmes Michael J

CFO

Officer
5,000 -3.9%
2.70
US$13,500 		5,000 -3.9% 2.70 US$13,500
2012-11-14 2012-11-12 S Sale Holmes Michael J

CFO

Officer
10,000 -7.3%
2.70
US$27,027 		10,000 -7.3% 2.70 US$27,027
2012-11-14 2012-11-12 S Sale Holmes Michael J

CFO

Officer
10,000 -6.8%
2.71
US$27,115 		10,000 -6.8% 2.71 US$27,115
2012-11-14 2012-11-12 S Sale Holmes Michael J

CFO

Officer
10,000 -6.4%
2.72
US$27,160 		10,000 -6.4% 2.72 US$27,160
2012-07-23 2012-07-19 S Sale Holmes Michael J

CFO

Officer
7,750 -4.7%
4.00
US$31,000 		7,750 -4.7% 4.00 US$31,000
2012-03-16 2012-03-14 S Sale Barton Laura Lionetti

VP-Communications

Officer
15,000 -12.6%
3.17
US$47,518 		15,000 -12.6% 3.17 US$47,518
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
1,000 -0.7%
4.89
US$4,890 		1,000 -0.7% 4.89 US$4,890
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
1,000 -0.7%
4.93
US$4,930 		1,000 -0.7% 4.93 US$4,930
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
300 -0.2%
4.93
US$1,480 		300 -0.2% 4.93 US$1,480
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
200 -0.1%
4.96
US$992 		200 -0.1% 4.96 US$992
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
1,000 -0.7%
4.93
US$4,930 		1,000 -0.7% 4.93 US$4,930
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
500 -0.4%
4.86
US$2,430 		500 -0.4% 4.86 US$2,430
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
1,000 -0.7%
4.88
US$4,880 		1,000 -0.7% 4.88 US$4,880
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
500 -0.4%
4.88
US$2,440 		500 -0.4% 4.88 US$2,440
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
500 -0.4%
4.85
US$2,425 		500 -0.4% 4.85 US$2,425
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
1,000 -0.7%
4.82
US$4,820 		1,000 -0.7% 4.82 US$4,820
2008-06-13 2008-06-12 S Sale KNUTSSON GEORGE Non-Executive Director
350 -0.2%
4.80
US$1,680 		350 -0.2% 4.80 US$1,680
2008-03-12 2008-03-11 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
10,000 -3.1%
5.65
US$56,500 		10,000 -3.1% 5.65 US$56,500
2008-03-06 2008-03-04 PlS Planned sale MORRIS DAVID A

Secretary/Treasurer

Officer
15,000 -4.5%
5.30
US$79,500 		15,000 -4.5% 5.30 US$79,500
2008-02-29 2008-02-29 S Sale MORRIS DAVID A

Secretary/Treasurer

Officer
5,000 -1.6%
4.86
US$24,300 		5,000 -1.6% 4.86 US$24,300
2008-02-29 2008-02-29 S Sale MORRIS DAVID A

Secretary/Treasurer

Officer
5,000 -1.5%
4.87
US$24,350 		5,000 -1.5% 4.87 US$24,350
2008-02-29 2008-02-27 S Sale MORRIS DAVID A

Secretary/Treasurer

Officer
5,000 -1.6%
5.35
US$26,750 		5,000 -1.6% 5.35 US$26,750
2008-02-29 2008-02-27 S Sale MORRIS DAVID A

Secretary/Treasurer

Officer
5,000 -1.5%
5.30
US$26,500 		5,000 -1.5% 5.30 US$26,500
2008-02-04 2008-01-31 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
2,600 -0.9%
5.09
US$13,234 		2,600 -0.9% 5.09 US$13,234
2008-02-04 2008-01-31 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
1,600 -0.5%
5.08
US$8,128 		1,600 -0.5% 5.08 US$8,128
2008-02-04 2008-01-31 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
6,600 -2.1%
5.07
US$33,462 		6,600 -2.1% 5.07 US$33,462
2008-02-04 2008-01-31 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
900 -0.3%
5.06
US$4,554 		900 -0.3% 5.06 US$4,554
2008-02-04 2008-01-31 PlS Planned sale MORRIS DAVID A

Secretary / Treasurer

Officer
3,300 -1.1%
5.05
US$16,665 		3,300 -1.1% 5.05 US$16,665
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