Sandisk Corp Chairman and CEO David Goeckeler sold 9,604 shares on 2026-09-17 at about $1,570 per share, for total proceeds of roughly $15.07 million. Because the sale was made under a pre-scheduled Rule 10b5-1 trading plan—an arrangement set up in advance to sell shares automatically—it is generally viewed as a routine liquidity or diversification move rather than a real-time judgment about the business. This trade still matters because it came from the company’s top executive, whose actions are closely watched given his day-to-day visibility into operations and strategy. Investors often track CEO selling to understand how management is managing personal exposure to the stock, especially when the dollar amount is large, as it is here. Over the past 30 days, this filing is the only reported insider transaction at SNDK, and it was also by Goeckeler. With no other recent insider buys or sells to compare against, the available pattern is limited to this single, planned sale.