WDC Western Digital Corporation

NASDAQ
$447.18

Western Digital Corporation (WDC) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with WDC's own trailing one-year pace, with 72% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 5 sellers in the last 90 days
Insiders buying
0
0 transactions
Insiders selling
10
224 transactions
Purchases
$0
0 shares
Sales
$74.9M
254,343 shares
Net activity
-$74.9M
purchases less sales

How much of that selling was preplanned? 72% planned / 28% discretionary

10b5-1 plan sales $53.7M 205 transactions · 173,867 shares
Discretionary sales $21.3M 19 transactions · 80,476 shares

Largest single sale: $3.0M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

No open-market insider purchase on record.

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Gubbi Vidyadhara K Chief of Global Operations Sell 1,795 $459.87 $825.5K 80,571 −2.2% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 432 $451.20 $194.9K 111,030 −0.4% of holding
STREETER STEPHANIE A Director Sell 1,600 $455.00 $728.0K 34,807 −4.4% of holding
STREETER STEPHANIE A 2 fills Director Sell 4,000 $447.82 $1.8M 38,407 −9.4% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 1,007 $478.36 $481.7K 112,155 −0.9% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 476 $450.78 $214.6K 114,784 −0.4% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 684 $446.17 $305.2K 112,146 −0.6% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 235 $477.27 $112.2K 113,928 −0.2% of holding
Tan Irving 7 fills Chief Executive Officer Sell 10b5-1 20,000 $444.97 $8.9M 593,488 −3.3% of holding
Cole Martin I 32 fills Director Sell 10b5-1 4,000 $449.34 $1.8M 25,369 −13.6% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 808 $529.63 $427.9K 114,539 −0.7% of holding
Cole Martin I 44 fills Director Sell 10b5-1 4,000 $515.63 $2.1M 29,385 −12% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 432 $545.60 $235.7K 116,643 −0.4% of holding
Gubbi Vidyadhara K Chief of Global Operations Sell 2,475 $556.24 $1.4M 85,154 −2.8% of holding
KIDDOO BRUCE E Director Sell 750 $528.52 $396.4K 3,903 −16.1% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 214 $539.63 $115.5K 117,157 −0.2% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 308 $488.61 $150.5K 118,135 −0.3% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 106 $458.87 $48.6K 118,443 −0.1% of holding
Davis Brian Scott 18 fills Chief Sales & Mrktng Officer Sell 10b5-1 10,000 $500.69 $5.0M 113,889 −8.1% of holding
Gubbi Vidyadhara K Chief of Global Operations Sell 4,674 $443.19 $2.1M 90,041 −4.9% of holding
Tan Irving 9 fills Chief Executive Officer Sell 10b5-1 20,000 $411.84 $8.2M 614,893 −3.2% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 363 $377.09 $136.9K 120,023 −0.3% of holding
Gubbi Vidyadhara K Chief of Global Operations Sell 8,518 $255.32 $2.2M 99,276 −7.9% of holding
Gubbi Vidyadhara K 2 fills Chief of Global Operations Sell 10,148 $270.31 $2.7M 114,969 −8.1% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 8,547 $269.22 $2.3M 121,682 −6.6% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 777 $257.91 $200.4K 130,229 −0.6% of holding
Cole Martin I 14 fills Director Sell 10b5-1 6,000 $271.67 $1.6M 35,333 −14.5% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 214 $286.11 $61.2K 133,781 −0.2% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 308 $281.70 $86.8K 134,759 −0.2% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 130 $283.83 $36.9K 135,067 −0.1% of holding
Davis Brian Scott 12 fills Chief Sales & Mrktng Officer Sell 10b5-1 10,000 $279.16 $2.8M 131,450 −7.1% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 6,780 $270.49 $1.8M 136,538 −4.7% of holding
MASSENGILL MATTHEW E 11 fills Director Sell 10b5-1 36,926 $260.43 $9.6M 34,326 −51.8% of holding
Tan Irving 17 fills Chief Executive Officer Sell 10b5-1 20,000 $255.44 $5.1M 642,605 −3% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 10b5-1 447 $229.00 $102.4K 143,318 −0.3% of holding
Gubbi Vidyadhara K 2 fills Chief of Global Operations Sell 8,943 $168.14 $1.5M 131,985 −6.3% of holding
Gubbi Vidyadhara K Chief of Global Operations Sell 13,877 $159.94 $2.2M 135,807 −9.3% of holding
Alexy Kimberly Director Sell 2,000 $160.08 $320.2K 1,585 −55.8% of holding
Tregillis Cynthia L Chief Legal Officer & Corp Sec Sell 2,801 $160.57 $449.8K 144,596 −1.9% of holding
Cole Martin I 8 fills Director Sell 10b5-1 6,000 $162.62 $975.7K 41,333 −12.7% of holding
Oulman Roxanne Director Sell 1,800 $154.42 $278.0K 3,863 −31.8% of holding
Alexy Kimberly Director Sell 1,768 $154.00 $272.3K 3,585 −33% of holding
Cole Martin I 11 fills Director Sell 10b5-1 10,000 $161.32 $1.6M 49,360 −16.8% of holding
Tan Irving 6 fills Chief Executive Officer Sell 10b5-1 20,000 $150.69 $3.0M 659,448 −2.9% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.