Western Digital Chief Product Officer Disposes Shares for Tax Withholding

Executive Summary

On September 21, 2026, Western Digital Corp ($WDC) filed a Form 4 disclosing transactions by Chief Product Officer Shihab Ahmed Mohammed. The transactions occurred on September 17, 2026, and primarily reflect routine equity vesting settlement and tax withholding.

Transaction Details

• Tax Withholding (Code F): 5,150 shares of Common Stock were withheld by the issuer at a price of $423.87 per share to cover tax obligations arising from equity vesting, amounting to an aggregate value of approximately $2,182,930.50.
• Derivative Settlement (Code M): 56 shares of Common Stock were acquired upon the conversion and settlement of dividend equivalent rights associated with vesting restricted stock units.
• Dividend Equivalent Rights: 42.1952 dividend equivalent rights were credited, and 56.5237 rights were settled.

Post-Transaction Holdings

Following the transactions, Shihab Ahmed Mohammed directly holds 158,608 shares of Western Digital Common Stock, in addition to 396.6332 remaining dividend equivalent rights.

Market Significance

This filing receives a Low significance rating. The transactions do not represent discretionary open-market buying or selling; rather, they reflect administrative equity vesting and mandatory tax withholding under Rule 16b-3(e).