144 0001541135 XXXXXXXX LIVE 0000949039 DIAMOND OFFSHORE DRILLING, INC. 001-13926 777 N ELDRIDGE PKWY SUITE 1100 HOUSTON TX 77079 281-492-5300 Wolford Bernie G. Officer Director Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

8000 128000.00 102481240 07/15/2024 NYSE Common 05/08/2023 Restricted Stock Vesting Issuer N 8000 05/08/2023 Compensation N Bernie Wolford

777 N. Eldridge Parkway, Suite 1100 Houston TX 77079

Common 06/03/2024 26000 392860.00 Bernie Wolford

777 N. Eldridge Parkway Suite 1100 Houston TX 77079

Common 07/01/2024 26000 404300.00 07/15/2024 03/04/2024 /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Bernie G Wolford