144 0001468952 XXXXXXXX LIVE 0000889900 Patterson UTI Energy 001-39270 10713 W Sam Houston Pkwy Houston TX 77064 2817657185 Tiffany Thom Cepak Director Class A UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

12000 106320 376850000 03/04/2026 Nasdaq Class A 01/01/2020 Compensation Patterson UTI N 12000 01/01/2020 NA Y 03/04/2026 /s/Mijo Suric, for UBS Financial Services Inc, as attorney-in-fact for Tiffany Thom Cepak