Creating Two Independent Public Companies

11 © 2023 WESTERN DIGITAL CORPORATION OR ITS AFFILIATES ALL RIGHTS RESERVED Rich History of Driving Innovation & Customer Satisfaction One of the longest running and most successful joint ventures in technology Scale Innovation Strategic Benefits of Joint Venture ■ Combined financial resources ■ Equipment purchasing ■Fixed cost absorption ■ Faster technology conversions Efficiency of tools and labor Combines the companies that invented NAND flash and multi bits per cell IP ■IP and design collaboration leverage ■Memory Development Center integrated within Yokkaichi mega fab complex enabling quicker ramp to production Combined global talent pool ་་་ TM Western Digital. + KIOXIA Deep, Longstanding 23-Year Partnership CY22 NAND Market ($59Bn) (1) ་་་ Western Digital + KIOXIA 31% 18% 13% SK Hynix 19% Samsung 34% Micron 12% Others 4% 1. Yole Intelligence NAND market monitor Q3 2023 (September 2023). Western Digital. HDD Flash

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