Item 5. Other Information

Insider Trading Arrangements

During the quarter ended March 28, 2025, the following officer (as defined in Rule 16a-1(f) of the Exchange Act) adopted a trading arrangement for the purchase or sale of securities of Western Digital that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act (“Rule 10b5-1 Plan”):

• Gene Zamiska, Senior Vice President, Global Accounting and Chief Accounting Officer of the Company, adopted a Rule 10b5-1 Plan on March 6, 2025. Under this plan, up to an aggregate of 29,653 shares of the Company’s common stock may be sold before the plan expires on September 4, 2026.