Investor Presentaiton

Oceaneering ROV Drill Support Market Share 61% for quarter ending September 30, 2023 Contracted Floating Rigs at Period End 200 150 100 50 2021 Q1 2021 Q2 Contracted Floaters, Working Contracted Floaters, Not Working -Oll % of Contracted Floaters 100% 2021 Q3 2021 Q4 2022 Q1 2022 Q2 2022 Q3 2022 Q4 2023 Q1 2023 Q2 2023 Q3 75% 61% 50% 25% 0% Source: Rig data, IHS Petrodata at September 30, 2023. Competitor market share data is based on Oll internal estimates. Oll % of Floating Rigs 61% Oll Subsea 7 Fugro TechnipFMC ■ Other Ⓡ OCEANEERING 42

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