X0609 4 2026-09-02 0000866829 HORNBECK OFFSHORE SERVICES, INC. HOS 0001284591 HORNBECK TODD M false 103 NORTHPARK BOULEVARD, SUITE 300 COVINGTON LA 70433 true true false false See Remarks false Common Stock 2026-09-02 4 A false 225000 0 A 5669648.112 D Stock Option (right to buy) 10.60 2026-09-02 4 A false 675000 0 A 2029-09-01 2036-09-02 Common Stock 675000 675000 D Performance Restricted Stock Units 2026-09-02 4 A false 500000 0 A Common Stock 500000 500000 D Performance Restricted Stock Units 2026-09-02 4 A false 500000 0 A Common Stock 1000000 500000 D Represents a grant of 225,000 restricted stock units ("RSUs"), each of which represents a contingent right to receive, upon vesting, one share of common stock, par value $0.00001 per share, of the Issuer ("Common Stock"). The RSUs vest on September 1, 2029. Represents a grant of performance-based RSUs ("PRSUs") with the right to receive one share of Common Stock, upon vesting on December 31, 2029, based on the achievement of specified target annualized gross synergies. Represents a grant of PRSUs with the right to receive up to two shares of Common Stock, upon vesting on June 30, 2028, October 31, 2028, March 31, 2029, June 30, 2029, September 30, 2029, and December 31, 2029, based on the achievement of specified target stock prices. President and Chief Executive Officer /s/ Beth A. LaBrosse, as Attorney-in-Fact for Todd M. Hornbeck 2026-09-04