Odyssey Marine Exploration Inc — Current Report (Form 8-K)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 21, 2026

ODYSSEY MARINE EXPLORATION, INC.

(Exact name of registrant as specified in its charter)

205 S. Hoover Blvd., Suite 210

Tampa, Florida 33609

(Address of Principal Executive Offices and Zip Code)

Registrant’s telephone number, including area code: (813) 876-1776

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

On July 21, 2026, Odyssey Marine Exploration, Inc. (the “Company”) was notified by the Listing Qualifications Department of the Nasdaq Capital Market (“Nasdaq”) that the Company did not satisfy the $1.00 minimum bid price requirement for 30 consecutive business days, as required under Nasdaq Listing Rule 5550(a)(2). In accordance with the Nasdaq Listing Rules, the Company has a 180-calendar day period, ending January 19, 2027, to regain compliance with the minimum bid price requirement. To become compliant, the Company must evidence a closing bid price of at least $1.00 per share of its common stock for a minimum of ten consecutive business days.

If the Company does not regain compliance with the minimum bid price requirement by January 19, 2027, the Company may be eligible for an additional 180-calendar day compliance period. To qualify, the Company would be required to meet the continued listing requirement for market value of publicly held shares and all other initial listing standards for the Nasdaq Capital Market, with the exception of the minimum bid price requirement, and would need to provide written notice to Nasdaq of its intention to cure the deficiency during the second compliance period. If it appears to the Nasdaq staff that the Company will not be able to cure the deficiency, or if the Company is otherwise not eligible for the additional compliance period, Nasdaq will provide written notice to the Company that its securities are subject to delisting, and at that time the Company may appeal the delisting determination to a hearing panel. The notice has no immediate impact on the listing of the Company’s securities on Nasdaq.

As previously disclosed on June 1, 2026, the Company’s stockholders approved a reverse stock split of the Company’s common stock at a ratio in the range of 1-for-20 and 1-for-25 (the “Reserve Stock Split”). The Company expects that the Reverse Stock Split will enable it to regain compliance with the Nasdaq Listing Rules prior to the effective time of the merger with American Ocean Minerals Corporation (“AOM”) previously disclosed on April 8, 2026.

Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements based upon Odyssey’s and AOM’s current expectations. This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are identified by terminology such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “should,” “would,” “project,” “plan,” “expect,” “goal,” “seek,” “future,” “likely,” or the negative or plural of these words or similar expressions. These statements are only predictions. Odyssey and AOM have based these forward-looking statements largely on their then-current expectations and projections about future events, as well as the beliefs and assumptions of management. Forward-looking statements are subject to a number of risks and uncertainties, many of which involve factors or circumstances that are beyond each of Odyssey’s and AOM’s control, and actual results could differ materially from those stated or implied in forward-looking statements due to a number of factors, including but not limited to: (i) the risk that the conditions to the closing or consummation of the proposed Merger are not satisfied, including the failure to obtain stockholder approval for the proposed Merger; (ii) uncertainties as to the timing of the consummation of the proposed Merger and the ability of each of Odyssey and AOM to consummate the transactions contemplated by the proposed Merger; (iii) risks related to Odyssey’s and AOM’s ability to

correctly estimate their respective operating expenses and expenses associated with the proposed Merger, as applicable, as well as uncertainties regarding the impact any delay in the closing would have on the anticipated cash resources of the resulting combined company upon closing and other events and unanticipated spending and costs that could reduce the combined company’s cash resources; (iv) the occurrence of any event, change or other circumstance or condition that could give rise to the termination of the proposed Merger by either Odyssey or AOM; (v) the effect of the announcement or pendency of the proposed Merger on Odyssey’s or AOM’s business relationships, operating results, and business generally; (vi) costs related to the proposed Merger; (vii) the outcome of any legal proceedings that may be instituted against Odyssey, AOM, or any of their respective directors or officers related to the Merger Agreement or the transactions contemplated thereby; (viii) the ability of Odyssey or AOM to protect their respective intellectual property rights; (ix) competitive responses to the proposed Merger; (x) unexpected costs, charges or expenses resulting from the proposed Merger; (xi) whether the combined business of AOM and Odyssey will be successful; (xii) legislative, regulatory, political and economic developments; and (xiii) additional risks described in the “Risk Factors” section of Odyssey’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on March 31, 2026 and Odyssey’s Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2026, filed with the SEC on May 12, 2026. Additional assumptions, risks and uncertainties are described in detail in Odyssey’s registration statements, reports and other filings with the SEC, which are available on Odyssey’s website, and at www.sec.gov. Accordingly, you should not rely upon forward-looking statements as predictions of future events. Neither Odyssey nor AOM can assure you that the events and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results could differ materially from those projected in the forward-looking statements. The forward-looking statements made in this communication relate only to events as of the date on which the statements are made. Except as required by applicable law or regulation, Odyssey and AOM undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which the statement is made or to reflect the occurrence of unanticipated events. Investors should not assume that any lack of update to a previously issued “forward-looking statement” constitutes a reaffirmation of that statement.

Additional Information about the Proposed Merger and Where to Find It

This Current Report on Form 8-K does not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities or a solicitation of any vote or approval. This Current Report on Form 8-K relates to the proposed Merger. In connection with the proposed Merger, Odyssey has filed a Registration Statement on Form S-4, which includes a document that serves as a prospectus and proxy statement of Odyssey (the “proxy statement/prospectus”), and Odyssey has filed and will file other documents regarding the proposed Merger with the SEC. No offering of securities shall be made, except by means of a prospectus meeting the requirements of Section 10 of the Securities Act. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY, WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT STOCKHOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING THE PROPOSED MERGER. A definitive proxy statement/prospectus will be sent to Odyssey’s stockholders. Investors and security holders will be able to obtain these documents (when available) free of charge from the SEC’s website at www.sec.gov. In addition, investors and stockholders should note that Odyssey communicates with investors and the public using its website (www.odysseymarine.com), the investor relations website (https://www.ir.odysseymarine.com) where anyone will be able to obtain free copies of the proxy statement/prospectus and other documents filed by Odyssey with the SEC, and stockholders are urged to read the proxy statement/prospectus and the other relevant materials when they become available before making any voting or investment decision with respect to the proposed Merger.

Participants in the Solicitation

Odyssey, AOM, and their respective directors and executive officers and other members of management and employees and certain of their respective significant stockholders may be deemed to be participants in the solicitation of proxies from Odyssey and AOM stockholders in respect of the proposed Merger. Information about Odyssey’s directors and executive officers is available in Odyssey’s proxy statement, which was filed with the SEC on April 21, 2026, for the 2026 Annual Meeting of Stockholders, Odyssey’s Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2026, which was filed with the SEC on May 12, 2026. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the proxy solicitation and a description of their direct and indirect interests, by security holding or otherwise, will be contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC regarding the proposed Merger when they become available. Investors should read the proxy statement/prospectus carefully when it becomes available before making any voting or investment decisions. You may obtain free copies of these documents from the SEC and Odyssey as indicated above.

No Offer or Solicitation

This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.