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sellWeak cluster of 210b5-1 plan

Bernard Shek sold $1.0M of SNDK

Chief Legal Officer and Secty at Sandisk Corp. 600 shares at an average of $1,734.94, traded Oct 1, 2026, filed Oct 2, 2026.

Warning score
28
Value
$1.0M
600 shares
Holdings after
25,588
-2% from before
From 52-week low
+1429%
low $116.91, close $1,787.69
From 52-week high
-23%
high $2,335.00, as of Oct 1, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $1.0M at market
    +25
  • Share of holdings sold
    Sold 2.3% of holdings
    0
  • 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.

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.

SNDKOct 9, 2026 · close 1,582
Since filing Oct 2, 2026: -8.0%SPY +1.2% · excess -9.2%

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 0001242648-26-000045, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Oct 1, 2026SOpen-market sale
Common Stock10b5-1
-600$1,734.94$1.0M25,58810 d ago

Related signals

Other insiders at Sandisk Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
45Moderate
SNDKsell 410b5-1
Sandisk Corp
David Goeckeler
Chairman & CEO
$53M
33,841 shares
-8%
45Moderate
SNDKsell 410b5-1
Sandisk Corp
David Goeckeler
Chairman & CEO
$52M
33,838 shares
-8%
42Moderate
SNDKsell 410b5-1
Sandisk Corp
Luis Felipe Visoso
EVP & CFO
$1.6M
1,000 shares
-1%
35Weak
SNDKsell 410b5-1
Sandisk Corp
Alper Ilkbahar
EVP & Chief Technology Officer
$7.3M
4,712 shares
-10%
30Weak
SNDKsell 410b5-1
Sandisk Corp
Alper Ilkbahar
EVP & Chief Technology Officer
$626k
400 shares
-1%
35Weak
SNDKsell 410b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer & Secty
$4.1M
2,308 shares
-8%
34Weak
SNDKsell 410b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer & Secty
$915k
600 shares
-2%

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.

Bernard Shek sold $1.0M of SNDK | InsiderTell