ZAMISKA GENE M.

PrivateCIK: 1456385
Location

SAN JOSE, CA

ZAMISKA GENE M. (Principal Accounting Officer) sold 14.4% of their position (4.99K shares) of WESTERN DIGITAL CORP on the open market

Open‑market sale worth $375.8K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderZAMISKA GENE M.CIK 1456385
IssuerWESTERN DIGITAL CORPCIK 106040
Officer· Principal Accounting Officer
Since Aug 2019
-6.79K
Net shares
Net seller
$510.0K
Total sold
2
Open market trades
0B · 2S
5
Total transactions
6.00 acquired · 6.79K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+6.00

Price / share

Trade value

% of position

0.0%
8/21/2025
36.51K36.52K

Common Stock

Direct
F · Tax Withholding

Shares

1.80K

Price / share

$74.66

Trade value

$134.16K

% of position

4.9%
8/21/2025
36.52K34.72K

Common Stock

Direct
S · Sale

Shares

3.16K

Price / share

$75.68

Trade value

$239.15K

% of position

9.1%
8/21/2025
34.72K31.56K

Common Stock

Direct
S · Sale

Shares

1.83K

Price / share

$74.78

Trade value

$136.70K

% of position

5.8%
8/22/2025
31.56K29.73K
Total

Net shares

6.78K

Net value

-$510.01K

Derivative Transactions1

Dividend Equivalent Rights

Direct
M · Option Exercise
Converts to

Common Stock

6.11 shares

Shares

6.11

Strike price

Held after

50.26

Exercisable

8/21/2025
ZAMISKA GENE M. — Insider Transaction (Form 4) Filed Aug 25, 2025 | Finecho