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sellWeak cluster of 410b5-1 plan

Bernard Shek sold $915k of SNDK

Chief Legal Officer & Secty at Sandisk Corp. 600 shares at an average of $1,525.60, traded Sep 1, 2026, filed Sep 2, 2026.

Warning score
34
Value
$915k
600 shares
Holdings after
29,884
-2% from before
From 52-week low
+2909%
low $51.07, close $1,536.87
From 52-week high
-34%
high $2,335.00, as of Sep 1, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $915k at market
    +24
  • Share of holdings sold
    Sold 2.0% of holdings
    0
  • 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.

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 Sep 2, 2026: +1.8%SPY +2.0% · excess -0.2%

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 0001363249-26-000074, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 1, 2026SOpen-market sale
Common Stock10b5-1
-600$1,525.60$915k29,88440 d ago

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
28Weak
SNDKsell 210b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer and Secty
$1.0M
600 shares
-2%
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%

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 $915k of SNDK | InsiderTell