TREGILLIS CYNTHIA L

PrivateCIK: 2057088
Location

SAN JOSE, CA

TREGILLIS CYNTHIA L (Chief Legal Officer & Corp Sec) sold 0.8% of their position (919.00 shares) of WESTERN DIGITAL CORP on the open market

Open‑market sale worth $417.3K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderTREGILLIS CYNTHIA LCIK 2057088
IssuerWESTERN DIGITAL CORPCIK 106040
Officer· Chief Legal Officer & Corp Sec
Since Mar 2026
-2.41K
Net shares
Net seller
$1.10M
Total sold
2
Open market trades
0B · 2S
8
Total transactions
14.00 acquired · 2.42K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+3.00

Price / share

Trade value

% of position

0.0%
8/20/2026
114.54K114.54K

Common Stock

Direct
F · Tax Withholding

Shares

379.00

Price / share

$469.05

Trade value

$177.77K

% of position

0.3%
8/20/2026
114.54K114.16K

Common Stock

Direct
S · Sale

Shares

235.00

Price / share

$477.27

Trade value

$112.16K

% of position

0.2%
8/21/2026
114.16K113.93K

Common Stock

Direct
M · Option Exercise

Shares

+11.00

Price / share

Trade value

% of position

0.0%
8/21/2026
113.93K113.94K

Common Stock

Direct
F · Tax Withholding

Shares

1.11K

Price / share

$459.44

Trade value

$509.52K

% of position

1.0%
8/21/2026
113.94K112.83K

Common Stock

Direct
S · Sale

Shares

684.00

Price / share

$446.17

Trade value

$305.18K

% of position

0.6%
8/24/2026
112.83K112.15K
Total

Net shares

2.39K

Net value

-$1.10M

Derivative Transactions2

Dividend Equivalent Rights

Direct
M · Option Exercise
Converts to

Common Stock

3.83 shares

Shares

3.83

Strike price

Held after

305.97

Exercisable

8/20/2026

Dividend Equivalent Rights

Direct
M · Option Exercise
Converts to

Common Stock

11.18 shares

Shares

11.18

Strike price

Held after

294.79

Exercisable

8/21/2026