Investor Presentaiton

Revenue Trends by End Market In billions $ 2.4 Cloud $ 2.0 $ 1.6 $ 1.2 $ 0.8 $ 0.4 $ - Q3F22 Q4F22 Q1F23 Q2F23 Q3F23 Revenue $ 1.2 billion Decreased 2% QoQ Decreased 32% YoY © 2023 WESTERN DIGITAL CORPORATION OR ITS AFFILIATES ALL RIGHTS RESERVED Client Consumer In billions In billions $ 2.4 $ 2.4 $ 2.0 $ 2.0 $ 1.6 $ 1.6 $ 1.2 $ 1.2 $ 0.8 $ 0.8 $ 0.4 $ 0.4 $ - $ - Q3F22 Q4F22 Q1F23 Q2F23 Q3F23 Revenue $ 1.0 billion Decreased 10% QoQ Decreased 44% YoY Q3F22 Q4F22 Q1F23 Q2F23 Q3F23 Revenue $ 0.6 billion Decreased 22% QoQ Decreased 29% YoY

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