Note 17 — Subsequent Events

On April 22, 2026, we entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Hornbeck Offshore Services, Inc., a Delaware corporation (“Hornbeck”), Odyssey Sub, Inc., a Delaware corporation and our direct, wholly owned subsidiary (“Parent Sub”), and Hercules Sub LLC, a Delaware limited liability company and our direct, wholly owned subsidiary (“LLC Sub”). Pursuant to the Merger Agreement, upon the terms and subject to the conditions set forth therein, (i) Parent Sub will merge with and into Hornbeck, with Hornbeck continuing as the surviving entity (the “Surviving Corporation”) (the “First Company Merger”) and (ii) immediately following the First Company Merger, the Surviving Corporation will merge with and into LLC Sub (the “Second Company Merger” and, together with the First Company Merger, the “Mergers”), with LLC Sub continuing as the surviving entity (the “Combined Company”).

Upon consummation of the transactions contemplated by the Merger Agreement (the “Transactions”), we expect that current Helix shareholders will own approximately 45%, and current Hornbeck shareholders will own approximately 55%, of the Combined Company. Following the Transactions, our name will be changed to Hornbeck Offshore Services, Inc., and our common stock will remain listed on the New York Stock Exchange. The Mergers and the Transactions are expected to be consummated in the second half of 2026. However, no assurance can be given as to when, or if, the Mergers and the Transactions will be consummated.