Odyssey Marine Exploration (OMEX) CEO reshapes holdings with RSU exercise

Rhea-AI Filing Summary

Odyssey Marine Exploration reports that CEO Mark Gordon exercised 4,167 Restricted Stock Units on June 30, 2026, receiving the same number of common shares. To satisfy tax obligations, 1,139 shares were delivered at $0.8504 per share. After these transactions he directly holds 635,263 common shares and 20,833 RSUs, which vest in six equal installments on June 30 and December 20 of 2026, 2027 and 2028.

Insider Trade Summary

Net Buyer: 3,028 shares

Net Buy 3 txns

Insider Gordon Mark

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit (RSU)	4,167	$0.00	$0.00
Grant/Award	Common Stock	4,167	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	1,139	$0.8504	$968.61

Holdings After Transaction: Restricted Stock Unit (RSU) — 20,833 shares (Direct); Common Stock — 635,263 shares (Direct)

Footnotes (2)

1. F1. Each Restricted Stock Unit represents a contingent right to receive one share of OMEX common stock.
2. F2. Restricted Stock Units vest in six equal annual installments on June 30 and December 20, 2026, 2027 and 2028.

Key Figures

RSUs exercised: 4167.0000 shares Common shares acquired from RSUs: 4167.0000 shares Shares delivered for taxes: 1139.0000 shares +3 more

6 metrics

RSUs exercised 4167.0000 shares Restricted Stock Units converted to common stock on June 30, 2026

Common shares acquired from RSUs 4167.0000 shares Common stock received upon RSU settlement on June 30, 2026

Shares delivered for taxes 1139.0000 shares Common stock used to satisfy tax obligations at $0.8504 per share

Tax withholding price $0.8504 per share Per-share value for tax-withholding disposition of 1,139 common shares

RSUs remaining 20833.0000 units Restricted Stock Units outstanding after the June 30, 2026 exercise

Common shares held after transaction 635,263 shares Direct ownership of Odyssey Marine Exploration common stock post-transaction

Key Terms

Restricted Stock Unit (RSU), contingent right, tax-withholding disposition, vest in six equal annual installments

4 terms

Restricted Stock Unit (RSU) financial

"Each Restricted Stock Unit represents a contingent right to receive one share"

A restricted stock unit (RSU) is a promise from a company to give an employee company shares (or cash equal to their value) at a future date if certain conditions are met, such as staying with the company or hitting performance targets. For investors, RSUs matter because when they convert into actual shares they increase the number of shares available and can create selling pressure as employees cash out—think of them as a future paycheck paid in company stock.

contingent right financial

"represents a contingent right to receive one share of OMEX common stock"

tax-withholding disposition financial

"transaction_action is described as tax-withholding disposition of common stock"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

vest in six equal annual installments financial

"Restricted Stock Units vest in six equal annual installments on June 30 and December 20"

FAQ

What insider transaction did OMEX CEO Mark Gordon report on June 30, 2026?

CEO Mark Gordon exercised 4,167 RSUs into common stock on June 30, 2026. The transaction converted Restricted Stock Units into the same number of Odyssey Marine Exploration common shares as part of his equity compensation.

How many OMEX shares were used for tax withholding in Mark Gordons Form 4?

The filing shows 1,139 shares of OMEX common stock were delivered for tax obligations at $0.8504 per share. This tax-withholding disposition reduced the shares retained from the RSU-related award without involving an open-market sale.

How many OMEX shares does CEO Mark Gordon hold after this Form 4?

After the reported transactions, Mark Gordon directly holds 635,263 shares of Odyssey Marine Exploration common stock. This figure reflects his post-transaction ownership position as reported in the filings canonical holdings data.

How many Restricted Stock Units (RSUs) does Mark Gordon still hold at OMEX?

Following the June 30, 2026 RSU exercise, Mark Gordon has 20,833 RSUs outstanding. Each RSU represents a contingent right to receive one OMEX common share, subject to future vesting and settlement conditions.

What is the vesting schedule for Mark Gordons OMEX RSUs?

The RSUs vest in six equal annual installments on June 30 and December 20 of 2026, 2027 and 2028. As each installment vests, the corresponding RSUs can be settled into Odyssey Marine Exploration common stock.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/02/2026 - 04:06 PM Accepted by SEC EDGAR 07/02/2026 - 04:05 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gordon Mark

(Last) (First) (Middle)

205 S HOOVER BLVD SUITE 210

(Street)

TAMPA FLORIDA 33609

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ODYSSEY MARINE EXPLORATION INC [ "OMEX" ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/30/2026		A		4,167	A	$0	636,402	D
Common Stock	06/30/2026		F		1,139	D	$0.8504	635,263	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit (RSU)(1)	$0	06/30/2026		M			4,167	(2)	06/30/2026	Common stock	4,167	$0	20,833	D

Explanation of Responses:

1. Each Restricted Stock Unit represents a contingent right to receive one share of OMEX common stock.

2. Restricted Stock Units vest in six equal annual installments on June 30 and December 20, 2026, 2027 and 2028.

	/s/ Mark D. Gordon	07/01/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)