X0306 4 2016-01-07 0 0001131227 HORNBECK OFFSHORE SERVICES INC /LA HOS 0001284591 HORNBECK TODD M 103 NORTHPARK BOULEVARD, SUITE 300 COVINGTON LA 70433 1 1 0 0 President & CEO COMMON STOCK 2015-12-17 4 G 0 30000 0.00 D 852375 D COMMON STOCK 2016-01-07 4 P 0 12196 8.20 A 865071 D COMMON STOCK 2016-01-08 4 G 0 4800 0.00 D 860271 D COMMON STOCK 42511 I By Limited Partnership COMMON STOCK 1650 I By Wife COMMON STOCK 20000 I By Family Trusts COMMON STOCK 70 I By UTMA custodian for child COMMON STOCK 220 I By IRA This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 15, 2015. Includes 500 shares acquired under the Company's employee stock purchase plan on December 31, 2015. Represents shares beneficially owned by Reporting Person through a Family Limited Partnership Represents shares beneficially owned by Reporting Person through various family trusts. /s/ Beth A. LaBrosse as POA for Todd M. Hornbeck 2016-01-08