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OMEX · NASDAQ · Industrial Materials

Odyssey Marine Exploration (OMEX)

Develops seafloor mineral projects and provides specialized marine services.

$0.8210
Pre-market−0.03 (−3.91%)
At close$0.8544(+2.51%)

Breakdown13F · 13D/G · Form 4

Institutions67 holders · as of Mar 31, 202636.69%21.53M shares
Insiders5 holders · as of Oct 20, 20252.72%1.59M shares
Otherremainder60.59%35.57M shares

58.69M company shares as of Sep 3, 2026 · institutions as of Mar 31, 2026 · holders as of their latest filing

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
Greywolf Opportunities Master Fund II LPInstitution
10.31%6.05M13Gfiled Mar 4, 2026
Two Seas Capital LPInstitution
9.53%5.59M13Fas of Mar 31, 2026
Old West Investment Management, LLCInstitution
8.13%4.77M13Fas of Mar 31, 2026
Vanguard Capital Management LLCInstitution
4.08%2.40M13Fas of Mar 31, 2026
Citadel Advisors LLCInstitution
2.64%1.55M13Fas of Mar 31, 2026
Jefferies Financial Group Inc.Institution
2.56%1.50M13Fas of Mar 31, 2026
Mark B. JusthInsiderdirector
1.46%859,207Form 4filed Jul 3, 2025
Susquehanna International Group, LLPInstitution
1.41%828,57713Fas of Mar 31, 2026
Geode Capital Management, LLCInstitution
1.03%605,36213Fas of Mar 31, 2026
Renaissance Technologies LLCInstitution
0.92%541,72113Fas of Mar 31, 2026
Mark GordonInsiderdirector, officer: Chief Executive Officer
0.82%482,235Form 4filed Oct 20, 2025
BlackRock, Inc.Institution
0.67%391,93813Fas of Mar 31, 2026
UBS Group AGInstitution
0.62%363,73013Fas of Mar 31, 2026
Jane Street Group, LLCInstitution
0.61%358,26113Fas of Mar 31, 2026
Kingsbury Capital Investment Advisors LLCInstitution
0.53%313,87713Fas of Mar 31, 2026
Vanguard Fiduciary Trust CoInstitution
0.45%266,55913Fas of Mar 31, 2026
State Street CorpInstitution
0.39%229,81213Fas of Mar 31, 2026
XTX Topco LtdInstitution
0.38%221,81213Fas of Mar 31, 2026
Foundations Investment Advisors, LLCInstitution
0.31%183,75013Fas of Mar 31, 2026
SLT Holdings LLCInstitution
0.31%183,75013Fas of Mar 31, 2026
L. Roy Papp & Associates, LLPInstitution
0.26%152,46113Fas of Mar 31, 2026
John D. Jr LongleyInsiderofficer: President & COO
0.26%150,313Form 4filed Oct 15, 2025
Group One Trading, L.P.Institution
0.22%126,81913Fas of Mar 31, 2026
Rockefeller Capital Management L.P.Institution
0.21%123,74913Fas of Mar 31, 2026
Northern Trust CorpInstitution
0.20%117,44113Fas of Mar 31, 2026

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Mar 31, 2026

67 holders · 21.53M shares · 19 new positions · 29 increased · 13 reduced · 17 closed

HolderShares% outstandingChg q/qFiled
Two Seas Capital LP5.59M9.53%+408.0KMay 15, 2026
Old West Investment Management, LLC4.77M8.13%−723.3KMay 12, 2026
Vanguard Capital Management LLC2.40M4.08%+2.40MnewMay 15, 2026
Citadel Advisors LLC1.55M2.64%+1.53MMay 15, 2026
Jefferies Financial Group Inc.1.50M2.56%0May 8, 2026
Susquehanna International Group, LLP828.6K1.41%−340.7KMay 15, 2026
Geode Capital Management, LLC605.4K1.03%+45.4KMay 15, 2026
Renaissance Technologies LLC541.7K0.92%+53.1KMay 14, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Capital Latinoamericano, S.A. de C.V.11.64%3.93M13GJul 31, 2025
Greywolf Opportunities Master Fund II LP10.40%6.05M13GMar 4, 2026
Two Seas Capital LPincl. Sina Toussi, Two Seas Capital GP LLC9.99%5.86M13DApr 13, 2026
Old West Investment Management, LLC8.20%4.77M13GMay 12, 2026

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Oct 20, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale30,000$3.56482,235
Oct 17, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale30,000$3.50512,235
Oct 16, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale30,000$3.87542,235
Oct 15, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale30,000$3.98572,235
Oct 14, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale30,000$3.74602,235
Oct 13, 2025
Mark Gordondirector, officer: Chief Executive Officer
Sale20,956$3.50632,235
Oct 14, 2025
John D. Jr Longleyofficer: President & COO
Sale · 2 lots217,072$3.72150,313
Oct 13, 2025
John D. Jr Longleyofficer: President & COO
Sale38,977$3.50223,885

CongressHouse and Senate disclosures

Not reported.