Western Digital CEO Irving Tan Disposes Shares for Tax Withholding Incident to Vesting

Executive Summary

On September 21, 2026, Western Digital Corp ($WDC) filed a Form 4 for Chief Executive Officer and Director Irving Tan. The report reflects a routine vesting and dividend equivalent right settlement alongside share withholding to satisfy tax obligations.

Transaction Breakdown

• Dividend Equivalent Conversion (Code M): On September 20, 2026, 56.762 shares of Common Stock were acquired at $0.00 pursuant to the conversion of dividend equivalent rights associated with vesting restricted stock units.
• Tax Withholding (Code F): On September 20, 2026, 1,091.035 shares of Common Stock were withheld by the issuer at $441.36 per share to cover statutory tax obligations incident to vesting, totaling approximately $481,539.21.
• Dividend Equivalent Accrual (Code A): On September 17, 2026, 83.2995 dividend equivalent rights were credited at $0.00.

Ownership Post-Transaction

Following these transactions:

• Direct Holdings: 265,612.727 shares of Common Stock.
• Indirect Holdings:
  • 112,500 shares held by Trust via Inv Co.
  • 209,000 shares held by Personal Inv. Co.
• Total Indirect Holdings: 321,500 shares.

Market & Trading Significance

This transaction carries Low significance. It does not represent open-market buying or selling activity; rather, it is a non-discretionary tax withholding and administrative settlement of vested equity compensation under Rule 16b-3(e).