Cynthia L Tregillis Western Digital Corp (WDC) insider trading activity

Cynthia L Tregillis is Chief Legal Officer & Corp Sec of WESTERN DIGITAL CORP. Currently has a direct ownership of 144,596 shares of WDC, which is worth approximately $22.8 Million. The most recent transaction as insider was on Dec 02, 2025, when has been sold 2,801 shares (Common Stock) at a price of $160.57 per share, resulting in proceeds of $449,756. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 145K

4.16% 3M change

n/a 12M change

Total Value Held $22.8 Million

Cynthia L Tregillis Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 02 2025	SELL Open market or private sale	$449,756 $160.57 p/Share	2,801 Reduced 1.9%	144,596 Common Stock
Nov 25 2025	SELL Payment of exercise price or tax liability	$119,665 $155.41 p/Share	770 Reduced 0.52%	147,332 Common Stock
Nov 25 2025	BUY Exercise of conversion of derivative security	-	5 Added 0.0%	148,102 Common Stock
Nov 21 2025	SELL Payment of exercise price or tax liability	$154,222 $139.19 p/Share	1,108 Reduced 0.74%	148,097 Common Stock
Nov 21 2025	BUY Exercise of conversion of derivative security	-	7 Added 0.0%	149,205 Common Stock
Nov 20 2025	SELL Payment of exercise price or tax liability	$53,147 $140.23 p/Share	379 Reduced 0.25%	149,198 Common Stock
Nov 20 2025	BUY Exercise of conversion of derivative security	-	2 Added 0.0%	149,577 Common Stock

Oct 20 2025	SELL Payment of exercise price or tax liability	$158,839 $121.53 p/Share	1,307 Reduced 0.87%	149,575 Common Stock
Oct 20 2025	BUY Exercise of conversion of derivative security	-	8 Added 0.01%	150,882 Common Stock
Aug 27 2025	SELL Payment of exercise price or tax liability	$21,458 $80.67 p/Share	266 Reduced 0.18%	150,874 Common Stock
Aug 27 2025	BUY Exercise of conversion of derivative security	-	1 Added 0.0%	151,140 Common Stock
Aug 26 2025	BUY Grant, award, or other acquisition	-	16,554 Added 9.87%	151,139 Common Stock
Aug 25 2025	SELL Payment of exercise price or tax liability	$60,920 $79.22 p/Share	769 Reduced 0.57%	134,585 Common Stock
Aug 25 2025	BUY Exercise of conversion of derivative security	-	3 Added 0.0%	135,354 Common Stock
Aug 22 2025	SELL Open market or private sale	$1,051,930 $74.78 p/Share	14,067 Reduced 9.41%	135,351 Common Stock
Aug 21 2025	SELL Payment of exercise price or tax liability	$330,594 $74.66 p/Share	4,428 Reduced 2.88%	149,418 Common Stock
Aug 21 2025	BUY Exercise of conversion of derivative security	-	18 Added 0.01%	153,846 Common Stock
Aug 20 2025	SELL Payment of exercise price or tax liability	$194,016 $75.64 p/Share	2,565 Reduced 1.64%	153,828 Common Stock
Aug 20 2025	BUY Exercise of conversion of derivative security	-	10 Added 0.01%	156,393 Common Stock
Jul 20 2025	SELL Payment of exercise price or tax liability	$88,808 $68.0 p/Share	1,306 Reduced 0.83%	156,383 Common Stock
Jul 20 2025	BUY Exercise of conversion of derivative security	-	5 Added 0.0%	157,689 Common Stock
Jun 20 2025	SELL Payment of exercise price or tax liability	$12,095 $59.29 p/Share	204 Reduced 0.13%	157,684 Common Stock
Jun 20 2025	BUY Exercise of conversion of derivative security	-	0 Added 0.0%	157,888 Common Stock
May 27 2025	SELL Payment of exercise price or tax liability	$13,835 $51.82 p/Share	267 Reduced 0.17%	157,661 Common Stock
May 25 2025	SELL Payment of exercise price or tax liability	$38,538 $50.18 p/Share	768 Reduced 0.48%	157,928 Common Stock

CLT

Cynthia L Tregillis

Chief Legal Officer & Corp Sec

San Jose, CA

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells WDC shares.

Notify only if

Value

Insider Trading

Get notified when an Western Digital Corp insider buys or sells WDC shares.

Notify only if

Operation

Value

Type

News

Receive news related to WESTERN DIGITAL CORP

Track Activities on WDC

Account