Hornbeck Offshore Services, Inc.

Item 5.07 Submission of Matters to a Vote of Security Holders. On August 31, 2026, Helix Energy Solutions Group, Inc. (the “Company” or “Helix”) held a special meeting of shareholders (the “Special Meeting”) in connection with the proposed merger with Hornbeck Offshore Services, Inc., a Delaware corporation (“Hornbeck”), as disclosed in the Company’s definitive proxy statement filed with the U.S. Securities and Exchange Commission on July 31, 2026. At the close of business on July 27, 2026, the record date for the Special Meeting, 147,382,447 shares of Helix common stock were issued and outstanding. The final voting results are disclosed below. Issuance of Common Stock. Shareholders approved the issuance of shares of common stock, par value $0.00001 per share, of Helix following the Conversion (as defined below) (“Helix Delaware”) for purposes of complying with Section 312.03(c) of the New York Stock Exchange’s (“NYSE”) Listed Company Manual and, in the event such issuance constitutes a change of control, Section 312.03(d) of the NYSE’s Listed Company Manual. Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 126,692,154 644,096 172,957 644,096 172,957 Increase in Authorized Stock. Shareholders approved an increase in the authorized amount of (i) common stock, par value $0.00001 per share, of Helix Delaware and (ii) preferred stock, par value $0.00001 per share, of Helix Delaware, as set forth in Article V of the Charter (as defined below). Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 118,826,885 8,652,248 30,074 118,826,885 8,652,248 30,074 Approval of the Second Merger. Shareholders approved the merger of Hornbeck, as the surviving corporation in the First Merger (as defined below), with and into Hercules Sub LLC, a Delaware limited liability company (the “Second Merger”). Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 117,854,088 9,468,404 186,715 117,854,088 9,468,404 186,715 Plan of Conversion. Shareholders approved the plan of conversion, pursuant to which, immediately prior to the merger of Odyssey Sub, Inc., a Delaware corporation and direct wholly owned subsidiary of Helix, with and into Hornbeck, with Hornbeck continuing as the surviving entity (the “First Merger” and, together with the Second Merger, the “Mergers”), Helix will convert from a Minnesota corporation to a Delaware corporation (the “Conversion” and Helix Delaware, following the Mergers, the “Combined Company”) in accordance with Section 265 of General Corporation Law of the State of Delaware, as amended, and Section 302A.682 of the Minnesota Business Corporation Act, as amended. ───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 126,208,465 1,111,078 189,664 126,208,465 1,111,078 189,664 Compliance with Jones Act. Shareholders approved the provisions in Article XV of the form of certificate of incorporation of the Combined Company attached as Annex D to Helix’s registration statement on Form S-4, as amended (File No. 333-296508), (the “Charter”) regarding compliance with the United States citizenship and cabotage laws commonly referred to as the “Jones Act”, which are principally contained in 46 U.S.C. §§ 50501 (a), (b) and (d) and 46 U.S.C. Chapters 121 and 551. ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 126,978,952 443,103 87,152 126,978,952 443,103 87,152 Director and Officer Citizenship Requirement. Shareholders approved the director and officer citizenship requirement provisions, as set forth in Section 6.7 of the Charter. Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 126,985,653 477,069 46,485 126,985,653 477,069 46,485 Exclusive Forum. Shareholders approved the submission to jurisdiction provisions, as set forth in Article XIV of the Charter. Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 108,168,163 19,301,372 39,672 108,168,163 19,301,372 39,672 Officer Exculpation. Shareholders approved the provisions limiting liability of officers, as set forth in Article VII of the Charter. Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 114,732,346 12,734,229 42,632 12,734,229 42,632 Supermajority Approval Requirement. Shareholders approved the removal of the supermajority approval requirements, as set forth in Article XI of the Charter. Such approval required the affirmative vote of the holders of shares of Helix common stock representing 80% of the outstanding shares of Helix common stock entitled to vote on such proposal. Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 126,744,287 720,658 44,262 126,744,287 720,658 44,262 10. Corporate Opportunities Provision. Shareholders rejected the corporate opportunities provisions, as set forth in Article IX of the Charter. Votes For Votes Against Abstentions ────────────────────────────────────────────────── 57,242,463 69,985,545 281,199 57,242,463 69,985,545 281,199 11. Non-Binding Named Executive Officer Compensation. Shareholders approved, on a non-binding advisory basis, the compensation that may be paid or become payable to the Company’s named executive officers that is based on or otherwise relates to the Mergers. ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────── Votes For Votes Against Abstentions ─────────────────────────────────────────────────── 114,232,888 12,947,303 329,016 114,232,888 12,947,303 329,016 12. Adjournment. Because the Company’s shareholders approved proposals (1) through (6), the adjournment proposal was not submitted to the shareholders.

Item 7.01 Regulation FD Disclosure. On August 31, 2026, Helix and Hornbeck issued a joint press release announcing the results at the Special Meeting, a copy of which is furnished herewith as Exhibit 99.1 and is incorporated herein by reference. The information contained in Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1, is being “furnished” and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any registration statement or other filings under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be set forth by specific reference in such filing.