Operational and Financial Overview

ENSCOROWAN # Rigs Transocean Floater Fleets EnscoRowan 11 4 10 3 28 Seadrill¹ Diamond 17 Noble² 11 Maersk 8 Pacific 7 % 6th Generation+ # Rigs 53 72% Rig Fleet is Amongst the Highest-Quality in the Industry Jackup Fleets # UHE or Modern EnscoRowan 7 9 22 16 54 38 89% COSL 27 89% Shelf 41% Borr 82% Seadrill¹ 19 88% Maersk 15 100% Noble² ■Highest-Spec³ 6th Gen Moored/HE 6th+ Gen DP Only Other 13 31 37 27 22 37 37 6 36 31 ■Ultra HE5 ■Modern HE Modern Benign Other 18 13 13 12 Source: IHS Markit RigPoint as of April 2019 1 Seadrill includes Sevan Drilling and NADL; excludes newbuilds with no recourse to parent company; reflects 50% ownership of SeaMex 2 Noble reflects 50% ownership in Shell JV rigs (Bully I and Bully II); 3 Drillships delivered in 2013 or later, equipped with dual BOP and 2.5mm lbs. hookload derricks 4 Excludes 7 rigs contributed to ARO Drilling and 2 rigs expected to be retired 5 Includes jackups with the following rig designs: Gusto MSC CJ70, Le Tourneau Super Gorilla Class and KFELS N Class 6 Other jackups classified as harsh environment and North Sea capable < 20 years of age 7 Jackups not classified as harsh environment and North Sea capable < 20 years of age 17

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