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sellModerate cluster of 410b5-1 plan

David Goeckeler sold $52M of SNDK

Chairman & CEO at Sandisk Corp. 33,838 shares at an average of $1,527.87, traded Sep 14, 2026, filed Sep 16, 2026.

Warning score
45
Value
$52M
33,838 shares
Holdings after
413,410
-8% from before
From 52-week low
+1623%
low $90.09, close $1,551.99
From 52-week high
-34%
high $2,335.00, as of Sep 14, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $51.7M at market
    +25
  • Share of holdings sold
    Sold 7.6% 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 16, 2026: +4.1%SPY +3.4% · excess +0.6%

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 0001242648-26-000032, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-14,364$1,522.59$22M432,88428 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-181$1,522.87$276k432,70328 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-3,075$1,524.27$4.7M429,62828 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-2,280$1,526.45$3.5M427,34828 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-4,080$1,528.45$6.2M423,26828 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-359$1,529.36$549k422,90928 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-1,200$1,532.17$1.8M421,70928 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-700$1,535.12$1.1M421,00928 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-1,695$1,535.96$2.6M419,31428 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-3,200$1,537.68$4.9M416,11428 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-1,480$1,539.19$2.3M414,63428 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-864$1,540.78$1.3M413,77028 d ago
Sep 14, 2026SOpen-market sale
Common Stock10b5-1
-360$1,541.88$555k413,41028 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%
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%
16Weak
SNDKsell10b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer & Secty
$697k
600 shares
-2%
20Weak
SNDKsell10b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer & Secty
$1.3M
600 shares
-2%
28Weak
SNDKsell 210b5-1
Sandisk Corp
Bernard Shek
Chief Legal Officer & Secty
$1.0M
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.