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sellWeak cluster of 410b5-1 plan

Cynthia L Tregillis sold $124k of WDC

Chief Legal Officer & Corp Sec at WESTERN DIGITAL CORP. 438 shares at an average of $282.33, traded Feb 23, 2026, filed Feb 24, 2026.

Warning score
5
Value
$124k
438 shares
Holdings after
134,759
-0% from before
From 52-week low
+822%
low $30.39, close $280.12
From 52-week high
-5%
high $296.25, as of Feb 23, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $124k at market
    +10
  • Share of holdings sold
    Sold 0.3% of holdings
    0
  • Cluster
    4 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -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.

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 Feb 24, 2026: +47.0%SPY +14.2% · excess +32.8%

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 0001266824-26-000021, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Feb 20, 2026MOption exercise
Common Stock10b5-1
+3$0.00$0136,541Feb 24, 2026
Feb 20, 2026FTax withholding
Common Stock10b5-1
-244$285.52$70k136,297Feb 24, 2026
Feb 21, 2026MOption exercise
Common Stock10b5-1
+9$0.00$0136,306Feb 24, 2026
Feb 21, 2026FTax withholding
Common Stock10b5-1
-1,109$285.52$317k135,197Feb 24, 2026
Feb 23, 2026SOpen-market sale
Common Stock10b5-1
-130$283.83$37k135,067Feb 24, 2026
Feb 24, 2026SOpen-market sale
Common Stock10b5-1
-308$281.70$87k134,759Feb 24, 2026
Feb 20, 2026MOption exercise
Dividend Equivalent Rightsderivative10b5-1
-3$0.00$0344Feb 24, 2026
Feb 21, 2026MOption exercise
Dividend Equivalent Rightsderivative10b5-1
-9$0.00$0335Feb 24, 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%
25Weak
WDCsell10b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$1.7M
3,280 shares
-11%
11Weak
WDCsell10b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$386k
720 shares
-3%
20Weak
WDCsell10b5-1
WESTERN DIGITAL CORP
Brian Scott Davis
Chief Sales & Mrktng Officer
$5.0M
10,000 shares
-9%
55Moderate
WDCsell 3
WESTERN DIGITAL CORP
Vidyadhara K Gubbi
Chief of Global Operations
$2.2M
8,518 shares
-8%
40Moderate
WDCsell 3
WESTERN DIGITAL CORP
Vidyadhara K Gubbi
Chief of Global Operations
$2.7M
10,148 shares
-9%
20Weak
WDCsell 310b5-1
WESTERN DIGITAL CORP
Cynthia L Tregillis
Chief Legal Officer & Corp Sec
$2.5M
9,324 shares
-7%
40Moderate
WDCsell 410b5-1
WESTERN DIGITAL CORP
Martin I Cole
director
$1.6M
6,000 shares
-17%

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.

Cynthia L Tregillis sold $124k of WDC | InsiderTell