Capital Allocation Framework

14 WESTERN DIGITAL CONFIDENTIAL © 2022 WESTERN DIGITAL CORPORATION OR ITS AFFILIATES ALL RIGHTS RESERVED Quarterly Fact Sheet In millions, except Average Selling Price (ASP), percentages, and working capital related metrics Revenue by End Market (1) Cloud Client Consumer Total Revenue Segment Results Flash Revenue HDD Revenue Total Revenue Flash Gross Margin HDD Gross Margin Q4F21 Q1F22 Q2F22 Q3F22 Q4F22 $1,995 1,895 1,030 1,854 1,059 $ 4,920 $ 5,051 $ 4,833 $ 2,419 $ 2,490 $ 2,620 2,501 2,561 2,213 $ 2,225 1,853 973 $ 1,920 $ 1,774 1,732 875 $ 4,381 $2,098 1,637 793 $ 4,528 $ 2,400 2,128 $ 2,243 2,138 $ 4,920 $ 5,051 $ 4,833 $ 4,381 $ 4,528 35.5% 37.0% 36.1% 35.6% 35.9% 30.3% 30.9% 30.6% 27.7% Total Gross Margin for Segments (2) 32.9% 33.9% 33.6% 31.7% 28.2% 32.3% Exabyte Metrics QoQ Change in Flash Exabytes Sold (3) 4% 8% 13% (14%) 6% QoQ Change in HDD Exabytes Sold (3) 34% 4% (14%) 1% 1% QoQ Change in Total Exabytes Sold (3) 30% 4% (11%) (2%) 2% Flash Metrics QoQ Change in ASP/Gigabytes (3) 7% (3%) (6%) (1%) 2% HDD Metrics Cloud Units Client Units Consumer Units Total HDD Units (4) HDD ASP(5) Cash and Cash Equivalents Cash Flows Cash Flows provided by Operating Activities Purchases of Property, Plant and Equipment, net 11.0 11.4 9.8 9.7 9.3 9.3 7.8 6.7 5.7 3.9 5.0 4.9 5.1 4.4 3.3 25.3 24.1 21.6 19.8 16.5 $ 97 $ 102 $ 97 $ 101 $ 120 $ 3,370 Activity Related to Flash Ventures, net Free Cash Flow (6) Working Capital Related Days Sales Outstanding Days Inventory Outstanding Days Payables Outstanding Cash Conversion Cycle $ 994 (304) 102 $ 3,290 $ 521 (245) (52) $ 2,531 $ 666 (294) 35 $ 407 52 $ 398 (290) $ 148 $ 2,505 $ 2,327 $ 295 (278) 40 (114) $ 792 $ 224 $ (97) 42 44 49 56 98 95 102 104 107 (63) (61) (68) (63) (66) 77 78 86 90 97

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