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sellModerate cluster of 410b5-1 plan

David Goeckeler sold $53M of SNDK

Chairman & CEO at Sandisk Corp. 33,841 shares at an average of $1,574.21, traded Sep 17, 2026, filed Sep 21, 2026.

Warning score
45
Value
$53M
33,841 shares
Holdings after
382,865
-8% from before
From 52-week low
+1618%
low $93.97, close $1,614.39
From 52-week high
-31%
high $2,335.00, as of Sep 17, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $53.3M at market
    +25
  • Share of holdings sold
    Sold 8.1% 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 21, 2026: -10.5%SPY +0.7% · excess -11.1%

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 0001242648-26-000041, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 17, 2026AGrant or award
Common Stock10b5-1
+3,296$0.00$0416,70621 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-40$1,567.26$63k416,66621 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-9,604$1,569.00$15M407,06221 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-910$1,570.04$1.4M406,15221 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-4,558$1,571.21$7.2M401,59421 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-1,157$1,572.60$1.8M400,43721 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-306$1,573.15$481k400,13121 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-2,588$1,574.57$4.1M397,54321 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-2,778$1,575.58$4.4M394,76521 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-4,139$1,576.82$6.5M390,62621 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-2,876$1,578.34$4.5M387,75021 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-640$1,579.41$1.0M387,11021 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-1,480$1,580.25$2.3M385,63021 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-1,080$1,583.80$1.7M384,55021 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-1,520$1,585.85$2.4M383,03021 d ago
Sep 17, 2026SOpen-market sale
Common Stock10b5-1
-165$1,587.00$262k382,86521 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
$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.

David Goeckeler sold $53M of SNDK | InsiderTell