Operational and Financial Overview

ENSCOROWAN # Rigs Highest-Specification Drillships1 Strong Portfolio of Highest-Specification Drillships that are Preferred by Customers. Global Drillship Utilization - Delivered Rigs³ 100% # of Rigs with 2H19 Availability² Transocean EnscoRowan Diamond 4 Noble 4 Seadrill 4 12 2 80% 11 7 60% 0 40% 2 Maersk 3 2 Pacific 3 All Other 6 Source: IHS Markit RigPoint as of April 2019 3 2 Drillships delivered in 2013 or later, equipped with dual BOP and 2.5mm lbs. hookload derricks 2 Assumes no newbuilds delivered before year-end 2019 18 Jan 16 Jul 16 Jan 17 Jul 17 Jan 18 Jul 18 Jan 19 Highest- Spec Drillships¹ Other Drillships Contract Status - Highest-Spec Drillships ENSCO DS-10 Rowan Resolute Rowan Relentless ENSCO DS-7 ENSCO DS-12 Rowan Renaissance ENSCO DS-9 ENSCO DS-11 Rowan Reliance 2019 2020 2021 ENSCO DS-13 ENSCO DS-14 ■Contracted Options >> Under Construction Available 3 Utilization excludes 20 newbuild drillships including 9 classified as highest-spec 4 ENSCO DS-7 expected to work following receipt of an LOA

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