Creating Two Independent Public Companies

7 © 2023 WESTERN DIGITAL CORPORATION OR ITS AFFILIATES ALL RIGHTS RESERVED Two Independent Public Data Storage Companies 1. FY23 Revenue Mix (1) Product Categories Representative Customer Base Client 11% HDD Consumer 13% Cloud 76% Client 60% Flash Consumer 32% Cloud Nearline HDD Desktop HDD Notebook HDD Top 4 US cloud titans Top 3 storage OEMs Top 5 PC OEMS Smart Video Retail HDD Leading Cloud and Smart Video providers in China Client SSD Retail Flash Enterprise SSD Top 5 PC OEMS ☐ Over 350K retail stores All major e-tailers and retailers 8% Gaming Consoles Mobile Wafers & Components All major gaming console platforms Based on FY23 operating performance of Western Digital's reportable segments. WWestern Digital. HDD Flash

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