Western Digital Insider Files Proposed Sale of 10,000 Shares ($4.48M)

Executive Summary

On August 31, 2026, STREETER STEPHANIE A, identified as an affiliate of WESTERN DIGITAL CORP ($WDC), submitted a Form 144 filing announcing the intended sale of 10,000 shares of common stock through Fidelity Brokerage Services LLC. The aggregate market value of the proposed disposition is $4,478,500.00, representing an estimated price of $447.85 per share.

Transaction & Security Details

• Issuer: Western Digital Corp ($WDC / CIK: 0000106040)
• Filer: Stephanie A. Streeter (CIK: 0001021762)
• Shares to Sell: 10,000 Common shares
• Total Market Value: $4,478,500.00
• Shares Outstanding: 360,540,944
• Dilution / Float Impact: Minimal relative to the total shares outstanding (~0.003%).
• Ownership Structure: Indirect ownership through the Edward S and Stephanie A Streeter Living Trust.

Origin of Shares

The 10,000 shares to be liquidated were acquired as compensation via issuer stock awards:

1. November 14, 2019: 4,963 shares
2. November 16, 2020: 4,854 shares
3. November 16, 2021: 183 shares

Prior Dispositions & Market Context

The filer reported zero sales in the three months preceding this notice, marking this as an initial planned liquidation of these vested equity awards.