144 0001041815 XXXXXXXX LIVE 0000866829 HORNBECK OFFSHORE SERVICES, INC. 001-32936 103 NORTHPARK BOULEVARD SUITE 300 COVINGTON LA 70433 985-727-2000 KRATZ OWEN E Officer Common Stock Stifel Nicolaus & Company Inc

501 N Broadway St. Louis MO 63102

2500000 26361000.00 147382447 09/02/2026 NYSE Common Stock 01/02/2009 Equity Compensation - See Remarks Issuer N 2296000 01/02/2009 Equity Compensation Common Stock 06/24/2009 Open Market - See Remarks Open Market N 204000 06/24/2009 Cash Y Helix Energy Solutions Shares acquired via various equity compensation events from 1/2/2009 to 1/2/2025 and Helix Energy Solutions Shares acquired via open market purchases on 6/24/2009 and 8/2/2010 09/02/2026 /s/ James Weimer, as a duly authorized representative of STIFEL, as attorney-in-fact for Owen Kratz