144 0001946868 XXXXXXXX LIVE 0000866829 HORNBECK OFFSHORE SERVICES, INC. 001-32936 103 NORTHPARK BOULEVARD SUITE 300 COVINGTON LA 70433 985-727-2000 Glassman Diana Former Director Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

13014 125455.91 147382447 09/03/2026 NYSE Common 12/07/2023 Restricted Stock Vesting Issuer N 13014 12/07/2023 Compensation N Diana A. Glassman

103 Northpark Boulevard Suite 300 Covington LA 70433

Common 09/02/2026 14041 145491.61 09/03/2026 /s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Diana A. Glassman.