WESTERN DIGITAL CORP 4

Cynthia L. Tregillis, Chief Legal Officer & Corporate Secretary of Western Digital Corp (WDC), executed small pre‑planned sales totaling 522 common shares (~$264K) and had routine RSU‑related conversions and tax withholding, leaving her with approximately 117,157 shares (~$62M).

On this Form 4, Western Digital Corporation Chief Legal Officer & Corporate Secretary Cynthia L. Tregillis reported small, pre‑planned open‑market sales of common stock alongside routine equity award activity. She sold 308 shares on 2026-05-22 at an average price of $488.61 and 214 shares on 2026-05-27 at $539.63, totaling 522 shares sold for approximately $264,000 under a Rule 10b5-1 trading plan. On 2026-05-25, 7.3619 dividend equivalent rights were automatically converted into the same number of common shares at no cost in connection with RSU vesting, and a separate “M” code reflects the mechanical conversion of those rights into stock, while 771 shares were withheld at an effective price of $484.28 to satisfy tax obligations upon vesting. After these transactions, she directly owns about 117,157 shares, with an estimated holding value of roughly $62 million based on the current share price, indicating that the sales represent a very small portion of her overall ownership and appear to be routine diversification and tax-related activity rather than a significant change in insider exposure.

Filing Facts

CIK

106040

Ticker

WDC

Form

4

Source Type

sec

Accession

0001266824-26-000107

Alert Tier

8