TREGILLIS CYNTHIA L

PrivateCIK: 2057088
Location

SAN JOSE, CA

TREGILLIS CYNTHIA L (Chief Legal Officer & Corp Sec) sold 0.7% of their position (808.00 shares) of WESTERN DIGITAL CORP on the open market

Open‑market sale worth $427.9K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderTREGILLIS CYNTHIA LCIK 2057088
IssuerWESTERN DIGITAL CORPCIK 106040
Officer· Chief Legal Officer & Corp Sec
Since Mar 2026
-2.12K
Net shares
Net seller
$1.07M
Total sold
1
Open market trades
0B · 1S
4
Total transactions
13.00 acquired · 2.13K disposed
Non-Derivative Transactions3

Common Stock

Direct
M · Option Exercise

Shares

+13.00

Price / share

Trade value

% of position

0.0%
7/20/2026
116.64K116.66K

Common Stock

Direct
F · Tax Withholding

Shares

1.31K

Price / share

$487.42

Trade value

$638.03K

% of position

1.1%
7/20/2026
116.66K115.35K

Common Stock

Direct
S · Sale

Shares

808.00

Price / share

$529.63

Trade value

$427.94K

% of position

0.7%
7/21/2026
115.35K114.54K
Total

Net shares

2.10K

Net value

-$1.07M

Derivative Transactions1

Dividend Equivalent Rights

Direct
M · Option Exercise
Converts to

Common Stock

13.20 shares

Shares

13.20

Strike price

Held after

309.80

Exercisable

7/20/2026