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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•190 filings

WDC

WESTERN DIGITAL CORP

Net sales of $13.9M over the last 3 months

4 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

−$13,859,279

0 buyers · 4 sellers

12-month purchases

$0.00

0 distinct insiders

12-month sales

$75,256,073

10 distinct insiders

Highlighted alerts

6

94 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
100
Voluntary view
P/S trades after deterministic checks
88
Administrative noise
Stored, never alerted
23
10b5-1
Shown as informational
SEC ownership XML facts
Code
F
Shares
1,309.71
Price
$364.32
Footnotes
3

The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right. Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 6, 2026.

Raspberry interpretation
Informational — no alert

Reason: administrative_code. The trade is reported under a Rule 10b5-1 plan.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

100 transactions

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
807
Price
$380.00
Value
$306,660
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
432
Price
$451.20
Value
$194,918
Open SEC filing

Gubbi Vidyadhara K

Chief of Global Operations

SaleAlert
Shares
1,795
Price
$459.87
Value
$825,472
Open SEC filing

STREETER STEPHANIE A

Director

SaleAlert
Shares
1,600
Price
$455.00
Value
$728,000
Open SEC filing

STREETER STEPHANIE A

Director

SaleAlert
Shares
2,000
Price
$448.58
Value
$897,160
Open SEC filing

STREETER STEPHANIE A

Director

SaleAlert
Shares
2,000
Price
$447.06
Value
$894,120
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
1,007
Price
$478.36
Value
$481,709
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
476
Price
$450.78
Value
$214,571
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
684
Price
$446.17
Value
$305,180
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
235
Price
$477.27
Value
$112,158
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
1,546
Price
$447.18
Value
$691,345
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
6,445
Price
$446.38
Value
$2,876,927
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
4,822
Price
$445.45
Value
$2,147,964
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
1,880
Price
$444.67
Value
$835,988
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
1,840
Price
$443.35
Value
$815,758
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
989
Price
$442.22
Value
$437,351
Open SEC filing

Tan Irving

Chief Executive Officer

Sale 10b5-1
Shares
2,478
Price
$441.48
Value
$1,093,997
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$465.12
Value
$14,884
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
160
Price
$462.30
Value
$73,968
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$434.81
Value
$27,828
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
112
Price
$433.84
Value
$48,590
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
38
Price
$432.20
Value
$16,424
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
115
Price
$431.41
Value
$49,612
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
103
Price
$430.45
Value
$44,336
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
93
Price
$429.12
Value
$39,908
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
115
Price
$428.08
Value
$49,230
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
199
Price
$461.23
Value
$91,786
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
248
Price
$459.97
Value
$114,073
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
529
Price
$458.96
Value
$242,788
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
328
Price
$457.45
Value
$150,043
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
312
Price
$456.52
Value
$142,433
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
304
Price
$455.55
Value
$138,486
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
128
Price
$454.44
Value
$58,169
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
144
Price
$453.27
Value
$65,271
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
106
Price
$452.12
Value
$47,925
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
70
Price
$451.30
Value
$31,591
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$426.45
Value
$27,293
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
39
Price
$449.42
Value
$17,527
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
41
Price
$448.46
Value
$18,387
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$447.10
Value
$14,307
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$444.51
Value
$14,224
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$442.47
Value
$14,159
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
96
Price
$440.96
Value
$42,332
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$439.38
Value
$28,120
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
118
Price
$438.08
Value
$51,694
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
154
Price
$436.89
Value
$67,282
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$435.59
Value
$13,939
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$425.31
Value
$13,610
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$424.05
Value
$27,139
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
808
Price
$529.63
Value
$427,941
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$539.82
Value
$17,274
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
57
Price
$538.81
Value
$30,712
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
71
Price
$537.73
Value
$38,179
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
112
Price
$536.27
Value
$60,062
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$534.90
Value
$8,558
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$533.97
Value
$25,631
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
96
Price
$533.01
Value
$51,169
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$531.62
Value
$25,518
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$544.95
Value
$8,719
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$543.92
Value
$26,108
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$542.79
Value
$26,054
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$540.96
Value
$8,655
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$530.27
Value
$33,937
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$528.07
Value
$25,348
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$498.95
Value
$23,949
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$497.47
Value
$23,878
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$494.63
Value
$15,828
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
44
Price
$493.64
Value
$21,720
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
30
Price
$492.38
Value
$14,771
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
38
Price
$491.06
Value
$18,660
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$488.06
Value
$7,809
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
128
Price
$527.22
Value
$67,485
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$525.56
Value
$8,409
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$524.72
Value
$25,187
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$523.23
Value
$16,743
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
160
Price
$521.14
Value
$83,382
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$519.25
Value
$24,924
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
216
Price
$517.59
Value
$111,799
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
112
Price
$516.72
Value
$57,872
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
392
Price
$515.40
Value
$202,036
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
296
Price
$514.09
Value
$152,172
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$486.87
Value
$23,370
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
316
Price
$513.14
Value
$162,154
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
310
Price
$511.67
Value
$158,616
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
326
Price
$510.61
Value
$166,459
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
32
Price
$509.16
Value
$16,293
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
96
Price
$507.94
Value
$48,762
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
96
Price
$505.51
Value
$48,529
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
80
Price
$503.80
Value
$40,304
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
128
Price
$502.87
Value
$64,367
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
64
Price
$501.72
Value
$32,110
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$499.69
Value
$7,995
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
16
Price
$485.54
Value
$7,769
Open SEC filing

Cole Martin I

Director

Sale 10b5-1
Shares
48
Price
$484.28
Value
$23,246
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
432
Price
$545.60
Value
$235,699
Open SEC filing

Gubbi Vidyadhara K

Chief of Global Operations

SaleAlert
Shares
2,475
Price
$556.24
Value
$1,376,694
Open SEC filing

KIDDOO BRUCE E

Director

SaleAlert
Shares
750
Price
$528.52
Value
$396,390
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
214
Price
$539.63
Value
$115,481
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
308
Price
$488.61
Value
$150,492
Open SEC filing

Tregillis Cynthia L

Chief Legal Officer & Corp Sec

Sale 10b5-1
Shares
106
Price
$458.87
Value
$48,640
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.