Investor Presentaiton

2 © 2023 Western Digital Corporation or its affiliates All rights reserved Forward Looking Statements SAFE HARBOR This presentation contains forward-looking statements within the meaning of federal securities laws, including statements regarding expectations for the company's business outlook and financial performance for the fiscal second quarter of 2024 and beyond; end-market performance; product developments, momentum and qualifications; the impact of the company's cost structure on earnings power; overall market conditions; and capital expenditure and allocation priorities. These forward-looking statements are based on management's current expectations and are subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the forward-looking statements. The preliminary financial results for the company's fiscal first quarter ended September 29, 2023 included in this presentation represent the most current information available to management. Actual results when disclosed in the company's Form 10-Q may differ from these preliminary results as a result of the completion of the company's financial closing procedures; final adjustments; completion of the review by the company's independent registered accounting firm; and other developments that may arise between now and the filing of the company's Form 10-Q. Other key risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the forward-looking statements include volatility in global economic conditions; future responses to and effects of global health crises; the impact of business and market conditions; the outcome and impact of the company's ongoing strategic review, including with respect to customer and supplier relationships, regulatory and contractual restrictions, stock price volatility and the diversion of management's attention from ongoing business operations and opportunities; the impact of competitive products and pricing; the company's development and introduction of products based on new technologies and expansion into new data storage markets; risks associated with cost saving initiatives, restructurings, acquisitions, divestitures, mergers, joint ventures and the company's strategic relationships; difficulties or delays in manufacturing or other supply chain disruptions; hiring and retention of key employees; the company's level of debt and other financial obligations; changes to the company's relationships with key customers; compromise, damage or interruption from cybersecurity incidents or other data system security risks; actions by competitors; the company's ability to achieve its GHG emissions reduction and other ESG goals; risks associated with compliance with changing legal and regulatory requirements and the outcome of legal proceedings; and other risks and uncertainties listed in the company's filings with the Securities and Exchange Commission (the “SEC”), including the company's Annual Report on Form 10-K filed with the SEC on August 22, 2023, to which your attention is directed. You should not place undue reliance on these forward-looking statements, which speak only as of the date hereof, and the company undertakes no obligation to update or revise these forward-looking statements to reflect new information or events, except as required by law. This presentation includes references to Non-GAAP financial measures. Reconciliations of the differences between the Non-GAAP measures provided in this presentation to the comparable GAAP financial measures are included in the appendix and in the Investor Relations section of our website. We have not fully reconciled our Non-GAAP financial measure guidance to the most directly comparable GAAP measures because material items that impact these measures are not in our control and/or cannot be reasonably predicted. Accordingly, a full reconciliation of the Non-GAAP financial measure guidance to the corresponding GAAP measures is not available without unreasonable effort.

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