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sellWeak cluster of 210b5-1 plan

Martin I Cole sold $1.6M of WDC

director at WESTERN DIGITAL CORP. 10,000 shares at an average of $161.32, traded Nov 5, 2025, filed Nov 6, 2025.

Warning score
33
Value
$1.6M
10,000 shares
Holdings after
39,504
-20% from before
From 52-week low
+426%
low $30.39, close $159.80
From 52-week high
0%
high $159.80, as of Nov 5, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $1.6M at market
    +25
  • Share of holdings sold
    Sold 20% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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 +3.3%, 3m +59.2%, 6m +183.9%.

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 Nov 6, 2025: +143.3%SPY +17.3% · excess +126.0%

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 0001266824-25-000217, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-144$152.99$22k49,360Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-221$155.77$34k49,139Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-419$157.01$66k48,720Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-833$158.02$132k47,887Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-551$159.16$88k47,336Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-982$160.24$157k46,354Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-960$161.31$155k45,394Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-3,303$162.18$536k42,091Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-1,231$163.08$201k40,860Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-798$164.08$131k40,062Nov 6, 2025
Nov 5, 2025SOpen-market sale
Common Stock10b5-1
-558$164.99$92k39,504Nov 6, 2025

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