Capital Allocation Framework

5 WESTERN DIGITAL CONFIDENTIAL Flash and Hard Drive Metrics Flash Revenue and Gross Margin In billions $2.8 $2.4 $2.0 $1.6 $1.2 $0.8 $0.4 Flash In billions 40% $2.8 35% $2.4 30% $2.0 25% $1.6 20% $1.2 15% $0.8 10% 5% $0.4 0% Q4F21 Q1F22 Q2F22 Q3F22 Q4F22 Revenue Gross Margin (%) Q4F22 Results Bit shipments: increased 6% QoQ ASP/Gigabyte: Blended: increased 2% QoQ Like-for-like: up slightly QoQ See Appendix for Supplemental Operating Segment Results. © 2022 WESTERN DIGITAL CORPORATION OR ITS AFFILIATES ALL RIGHTS RESERVED Hard Drive Revenue and Gross Margin 40% 35% 30% 25% 20% 15% 10% 5% 0% Q4F21 Q1F22 Q2F22 Q3F22 Q4F22 Revenue Gross Margin (%) Hard Drive Q4F22 Results Exabyte shipments: increased 1% QoQ ASP per drive: $120

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