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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
WESTERN DIGITAL CORP: WDC
Price: 11/21/25 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$139.19 $178.45 $28.83 $47,714 342 9,777 0.4% 10.6% 104.41% 0.55%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Industrial And Commercial Machinery And Computer Equipment Computer Storage Devices
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#
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
TREGILLIS CYNTHIA L
LO,SEC
JS
$119,666
770
---
11/25/25
---
$155.41
147,332
-0.5
D
R
11/26/25 - 4:36:39 pm
2
    
 
TREGILLIS CYNTHIA L
LO,SEC
JB
---
5
---
11/25/25
---
---
148,102
0.0
D
R
11/26/25 - 4:36:39 pm
3
    
 
TAN IRVING
CEO,DIR
JS
$58,123
374
---
11/25/25
---
$155.41
644,510
-0.1
D
R
11/26/25 - 4:36:31 pm
4
    
 
TAN IRVING
CEO,DIR
JB
---
21
---
11/25/25
---
---
644,884
0.0
D
R
11/26/25 - 4:36:31 pm
5
    
 
OULMAN ROXANNE
DIR
S
$277,956
1,800
---
11/25/25
---
$154.42
3,863
-31.8
D
---
11/26/25 - 4:36:22 pm
6
    
 
GUBBI VIDYADHARA K
COO
JS
$177,478
1,142
---
11/25/25
---
$155.41
149,181
-0.8
D
R
11/26/25 - 4:36:10 pm
7
    
 
GUBBI VIDYADHARA K
COO
JB
---
6
---
11/25/25
---
---
150,323
0.0
D
R
11/26/25 - 4:36:10 pm
8
    
 
DAVIS BRIAN SCOTT
SO
JS
$150,903
971
---
11/25/25
---
$155.41
132,748
-0.7
D
R
11/26/25 - 4:36:00 pm
9
    
 
DAVIS BRIAN SCOTT
SO
JB
---
5
---
11/25/25
---
---
133,719
0.0
D
R
11/26/25 - 4:36:00 pm
10
1y
2
100%
-35%
6
ALEXY KIMBERLY
DIR
S
$272,272
1,768
---
11/25/25
---
$154.00
3,585
-33.0
D
---
11/26/25 - 4:35:48 pm
11
    
 
TREGILLIS CYNTHIA L
LO,SEC
JS
$207,370
1,487
11/20/25
11/21/25
---
$139.19
148,097
-1.0
D
R
11/24/25 - 5:45:54 pm
12
    
 
TREGILLIS CYNTHIA L
LO,SEC
JB
---
9
11/20/25
11/21/25
---
---
149,577
0.0
D
R
11/24/25 - 5:45:54 pm
13
    
 
TAN IRVING
CEO,DIR
JS
$87,519
628
11/20/25
11/21/25
---
$139.19
644,863
-0.1
D
R
11/24/25 - 5:45:47 pm
14
    
 
TAN IRVING
CEO,DIR
JB
---
24
11/20/25
11/21/25
---
---
645,475
0.0
D
R
11/24/25 - 5:45:47 pm
15
    
 
GUBBI VIDYADHARA K
COO
JS
$179,475
1,285
11/20/25
11/21/25
---
$139.19
150,317
-0.8
D
R
11/24/25 - 5:45:31 pm
16
    
 
GUBBI VIDYADHARA K
COO
JB
---
6
11/20/25
11/21/25
---
---
151,599
0.0
D
R
11/24/25 - 5:45:31 pm
17
    
 
DAVIS BRIAN SCOTT
SO
JS
$182,665
1,307
11/20/25
11/21/25
---
$139.19
133,714
-1.0
D
R
11/24/25 - 5:45:06 pm
18
    
 
DAVIS BRIAN SCOTT
SO
JB
---
6
11/20/25
11/21/25
---
---
135,018
0.0
D
R
11/24/25 - 5:45:06 pm
19
    
 
SENNESAEL KRIS
CFO
JS
$2,619,497
18,680
---
11/20/25
---
$140.23
187,966
-9.0
D
R
11/24/25 - 5:45:39 pm
20
    
 
SENNESAEL KRIS
CFO
JB
---
99
---
11/20/25
---
---
206,646
0.0
D
R
11/24/25 - 5:45:39 pm
21
    
 
FELLER BRAD
VP,CAO
JB
---
9,907
---
11/20/25
---
---
9,907
New
D
R
11/24/25 - 5:45:14 pm
22
    
 
STREETER STEPHANIE A
DIR
JB
---
1,585
---
11/20/25
---
---
1,585
New
D
R
11/21/25 - 5:57:04 pm
23
    
 
MASSENGILL MATTHEW E
DIR
JB
---
1,585
---
11/20/25
---
---
28,897
5.8
D
R
11/21/25 - 5:31:55 pm
24
    
 
OULMAN ROXANNE
DIR
JB
---
1,595
11/19/25
11/20/25
---
---
5,663
39.2
D
R
11/21/25 - 5:31:44 pm
25
    
 
KIDDOO BRUCE E
DIR
JB
---
1,595
11/19/25
11/20/25
---
---
5,663
39.2
D
R
11/21/25 - 5:31:36 pm
26
    
 
DOLUCA TUNC
DIR
JB
---
1,585
---
11/20/25
---
---
1,585
New
D
R
11/21/25 - 5:31:26 pm
27
    
 
COLE MARTIN I
DIR
JB
---
1,929
11/19/25
11/20/25
---
---
41,433
4.9
D
R
11/21/25 - 5:31:10 pm
28
    
 
ALEXY KIMBERLY
DIR
JB
---
1,594
11/19/25
11/20/25
---
---
5,353
42.4
D
R
11/21/25 - 5:30:57 pm
29
    
 
STREETER STEPHANIE A
DIR
JB
---
16
---
11/19/25
---
---
40,407
0.0
I
R
11/21/25 - 5:57:04 pm
30
    
 
DOLUCA TUNC
DIR
JB
---
14
---
11/19/25
---
---
37,849
0.0
I
R
11/21/25 - 5:31:26 pm
31
    
 
FELLER BRAD
VP,CAO
3
---
---
---
11/14/25
---
---
---
---
---
---
11/24/25 - 5:44:54 pm
32
1w
1
100%
-4%
3
COLE MARTIN I
DIR
AS
$1,613,212
10,000
---
11/5/25
$152.99
$164.99
39,504
-20.2
D
10b
11/6/25 - 7:50:10 pm
33
6m
1
0%
238%
2
TAN IRVING
CEO,DIR
AS
$3,013,784
20,000
---
11/3/25
$149.02
$153.93
645,467
-3.0
D
10b
11/5/25 - 6:14:03 pm
34
    
 
TREGILLIS CYNTHIA L
LO,SEC
JS
$158,840
1,307
---
10/20/25
---
$121.53
149,575
-0.9
D
R
10/21/25 - 6:36:42 pm
35
    
 
TREGILLIS CYNTHIA L
LO,SEC
JB
---
8
---
10/20/25
---
---
150,882
0.0
D
R
10/21/25 - 6:36:42 pm
36
    
 
TAN IRVING
CEO,DIR
JS
$83,065
779
---
9/20/25
---
$106.63
665,467
-0.1
D
R
9/22/25 - 6:26:07 pm
37
    
 
TAN IRVING
CEO,DIR
JB
---
34
---
9/20/25
---
---
666,246
0.0
D
R
9/22/25 - 6:26:07 pm
38
    
 
DAVIS BRIAN SCOTT
SO
JS
$102,471
961
---
9/20/25
---
$106.63
135,015
-0.7
D
R
9/22/25 - 6:24:29 pm
39
    
 
DAVIS BRIAN SCOTT
SO
JB
---
5
---
9/20/25
---
---
135,976
0.0
D
R
9/22/25 - 6:24:29 pm
40
    
 
GUBBI VIDYADHARA K
COO
S
$1,024,162
11,343
---
9/4/25
---
$90.29
151,596
-7.0
D
---
9/5/25 - 7:57:45 pm
41
1y
15
40%
16%
2
ZAMISKA GENE M
VP,CAO
AS
$28,558
353
---
8/28/25
---
$80.90
27,425
-1.3
D
R,10b
8/28/25 - 6:26:42 pm
42
    
 
ZAMISKA GENE M
VP,CAO
JS
$27,831
345
---
8/27/25
---
$80.67
27,778
-1.2
D
R,10b
8/28/25 - 6:26:42 pm
43
    
 
ZAMISKA GENE M
VP,CAO
JB
---
1
---
8/27/25
---
---
28,123
0.0
D
R,10b
8/28/25 - 6:26:42 pm
44
    
 
TREGILLIS CYNTHIA L
LO,SEC
JS
$21,458
266
---
8/27/25
---
$80.67
150,874
-0.2
D
R
8/28/25 - 6:26:33 pm
45
    
 
TREGILLIS CYNTHIA L
LO,SEC
JB
---
16,555
8/26/25
8/27/25
---
---
151,140
12.3
D
R
8/28/25 - 6:26:33 pm
46
    
 
GUBBI VIDYADHARA K
COO
JS
$32,913
408
---
8/27/25
---
$80.67
162,939
-0.2
D
R
8/28/25 - 6:25:42 pm
47
    
 
GUBBI VIDYADHARA K
COO
JB
---
16,555
8/26/25
8/27/25
---
---
163,347
11.3
D
R
8/28/25 - 6:25:42 pm
48
    
 
DAVIS BRIAN SCOTT
SO
JS
$35,575
441
---
8/27/25
---
$80.67
135,971
-0.3
D
R
8/28/25 - 6:25:24 pm
49
    
 
DAVIS BRIAN SCOTT
SO
JB
---
13,244
8/26/25
8/27/25
---
---
136,412
10.8
D
R
8/28/25 - 6:25:24 pm
50
    
 
TAN IRVING
CEO,DIR
JB
---
74,162
---
8/26/25
---
---
666,212
12.5
D
R
8/28/25 - 6:26:19 pm
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