TREGILLIS CYNTHIA L

PrivateCIK: 2057088
Location

SAN JOSE, CA

TREGILLIS CYNTHIA L (Chief Legal Officer & Corp Sec) sold 7.1% of their position (9.32K shares) of WESTERN DIGITAL CORP on the open market

Open‑market sale worth $2.50M — a moderate reduction. 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
-12.12K
Net shares
Net seller
$3.20M
Total sold
2
Open market trades
0B · 2S
5
Total transactions
23.00 acquired · 12.15K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+23.00

Price / share

Trade value

% of position

0.0%
3/3/2026
133.78K133.80K

Common Stock

Direct
F · Tax Withholding

Shares

2.80K

Price / share

$250.61

Trade value

$701.21K

% of position

2.1%
3/3/2026
133.80K131.01K

Common Stock

Direct
S · Sale

Shares

777.00

Price / share

$257.91

Trade value

$200.40K

% of position

0.6%
3/4/2026
131.01K130.23K

Common Stock

Direct
S · Sale

Shares

8.55K

Price / share

$269.22

Trade value

$2.30M

% of position

6.6%
3/4/2026
130.23K121.68K
Total

Net shares

12.10K

Net value

-$3.20M

Derivative Transactions1

Dividend Equivalent Rights

Direct
M · Option Exercise
Converts to

Common Stock

23.81 shares

Shares

23.81

Strike price

Held after

304.41

Exercisable

3/3/2026
TREGILLIS CYNTHIA L — Insider Transaction (Form 4) Filed Mar 6, 2026 | Finecho