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sellModerate cluster of 410b5-1 plan

Martin I Cole sold $1.6M of WDC

director at WESTERN DIGITAL CORP. 6,000 shares at an average of $271.67, traded Mar 2, 2026, filed Mar 3, 2026.

Warning score
40
Value
$1.6M
6,000 shares
Holdings after
29,433
-17% from before
From 52-week low
+788%
low $30.39, close $269.79
From 52-week high
-9%
high $296.25, as of Mar 2, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $1.6M at market
    +25
  • Share of holdings sold
    Sold 17% of holdings
    +5
  • Cluster
    4 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +17.8%, 3m +124.8%, 6m +79.9%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

WDCOct 9, 2026 · close 397.28
Since filing Mar 3, 2026: +58.7%SPY +15.3% · excess +43.4%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001266824-26-000031, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-100$263.66$26k35,333Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-300$265.70$80k35,033Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-300$267.81$80k34,733Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-634$268.84$170k34,099Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-966$269.72$261k33,133Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-1,400$271.68$380k31,733Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-1,100$272.56$300k30,633Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-200$273.57$55k30,433Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-300$274.87$82k30,133Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-200$276.53$55k29,933Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-100$277.16$28k29,833Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-107$278.97$30k29,726Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-193$280.73$54k29,533Mar 3, 2026
Mar 2, 2026SOpen-market sale
Common Stock10b5-1
-100$281.99$28k29,433Mar 3, 2026

Related signals

Other insiders at WESTERN DIGITAL CORP and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
38Weak
WDCsell 3
WESTERN DIGITAL CORP
Vidyadhara K Gubbi
Chief of Global Operations
$825k
1,795 shares
-2%
7Weak
WDCsell 310b5-1
WESTERN DIGITAL CORP
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
$195k
432 shares
-0%
60Notable
WDCsell 3
WESTERN DIGITAL CORP
Stephanie A Streeter
director
$2.5M
5,600 shares
-14%
16Weak
WDCsell 310b5-1
WESTERN DIGITAL CORP
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
$696k
1,483 shares
-1%
11Weak
WDCsell 410b5-1
WESTERN DIGITAL CORP
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
$417k
919 shares
-1%
45Moderate
WDCsell 310b5-1
WESTERN DIGITAL CORP
Irving Tan
Chief Executive Officer
$8.9M
20,000 shares
-3%
40Moderate
WDCsell 310b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$1.7M
3,808 shares
-15%
19Weak
WDCsell 310b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$89k
192 shares
-1%
5Weak
WDCsell 210b5-1
WESTERN DIGITAL CORP
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
$428k
808 shares
-1%
40Moderate
WDCsell 410b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$1.7M
3,280 shares
-11%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Martin I Cole sold $1.6M of WDC | InsiderTell