Sandisk Corp Officer Bernard Shek Files Form 144 to Sell $7.15M in Common Stock

Executive Summary

On September 8, 2026, Bernard Shek, an Officer of Sandisk Corp, filed a Form 144 notice proposing the sale of 4,108 shares of Common Stock with an estimated aggregate market value of $7,147,920.00 (~$1,740.00 per share).

Key Filing Details

• Issuer: Sandisk Corp (CIK: 0002023554)
• Reporting Owner: Bernard Shek (Officer, CIK: 0002060144)
• Broker: Morgan Stanley Smith Barney LLC Executive Financial Services
• Approximate Date of Sale: September 8, 2026
• Shares Outstanding: 146,419,001
• Percentage of Outstanding Shares: ~0.0028%

Source of Securities

1. 2,308 shares acquired via Restricted Stock Units on September 3, 2026.
2. 1,800 shares acquired via WDC-Spinoff on February 21, 2025.

Rule 10b5-1 Plan & Prior Sales

• Trading Plan Adoption Date: March 4, 2026.
• Past 3-Month Sales Activity (under 10b5-1 plan):
  • September 1, 2026: 600 shares for $915,360.00
  • August 3, 2026: 600 shares for $697,296.00
  • July 1, 2026: 600 shares for $1,252,800.00

Trading Assessment

The transaction is categorized as Low Significance from a market signal perspective. The planned sale represents a negligible fraction of outstanding shares and is executed pursuant to a pre-established Rule 10b5-1 trading plan adopted on March 4, 2026, continuing a regular schedule of monthly dispositions.