ODYSSEY MARINE EXPLORATION INC

During the second quarter of 2025, the Company was informed that Mark D. Gordon, the Company’s Chairman and Chief Executive Officer, and John D. Longley, the Company’s President and Chief Operating Officer, respectively, had each adopted a written plan for the sale of shares of the Company’s common stock. Mr. Longley’s plan also relates to sales of common stock for the account of a revocable trust of which he serves as trustee. The plans were adopted on May 15, 2025, and are intended to satisfy the conditions to the affirmative defense set forth in Rule 10b5-1(c) under the Exchange Act.

Mr. Gordon’s plan will expire on August 14, 2026, and relates to the sale of up to 200,000 shares of common stock issuable upon the settlement of restricted stock units held by Mr. Gordon. Mr. Longley’s plan will expire on December 31, 2026, and relates to the sale of up to 256,049 shares of common stock issuable upon the exercise of vested stock options and the settlement of restricted stock units held by Mr. Longley and the revocable trust. Under Mr. Gordon’s plan and Mr. Longley’s plan, a securities brokerage firm will sell the shares for the account of Mr. Gordon and Mr. Longley and the trust, respectively, and neither Mr. Gordon nor Mr. Longley or the trust will have any control over the timing of sales under the plans; however, the brokerage firm will not sell any shares at any price below specified minimum prices set forth in the plans. Any transactions under the plans will be disclosed publicly through Form 144 and Form 4 filings with the SEC to the extent required by law.