X0609 4 2026-09-03 0 0002023554 Sandisk Corp SNDK 0002059630 Ilkbahar Alper false C/O SANDISK CORPORATION 951 SANDISK DRIVE MILPITAS CA 95035 0 1 0 0 EVP & Chief Technology Officer 1 Common Stock 2026-09-03 4 S 0 40 1513.23 D 48806 D Common Stock 2026-09-03 4 S 0 80 1515.045 D 48726 D Common Stock 2026-09-03 4 S 0 52 1517.6823 D 48674 D Common Stock 2026-09-03 4 S 0 68 1519.2312 D 48606 D Common Stock 2026-09-03 4 S 0 80 1520.93 D 48526 D Common Stock 2026-09-03 4 S 0 40 1522.1 D 48486 D Common Stock 2026-09-03 4 S 0 80 1523.605 D 48406 D Common Stock 2026-09-03 4 S 0 80 1526.81 D 48326 D Common Stock 2026-09-03 4 S 0 40 1527.58 D 48286 D Common Stock 2026-09-03 4 S 0 80 1529.705 D 48206 D Common Stock 2026-09-03 4 S 0 80 1530.52 D 48126 D Common Stock 2026-09-03 4 S 0 40 1532.02 D 48086 D Common Stock 2026-09-03 4 S 0 120 1533.69 D 47966 D Common Stock 2026-09-03 4 S 0 80 1534.48 D 47886 D Common Stock 2026-09-03 4 S 0 80 1535.655 D 47806 D Common Stock 2026-09-03 4 S 0 160 1537.4875 D 47646 D Common Stock 2026-09-03 4 S 0 80 1538.41 D 47566 D Common Stock 2026-09-03 4 S 0 80 1539.61 D 47486 D Common Stock 2026-09-03 4 S 0 80 1541.005 D 47406 D Common Stock 2026-09-03 4 S 0 80 1542.675 D 47326 D Common Stock 2026-09-03 4 S 0 2594 1543.7634 D 44732 D Common Stock 2026-09-03 4 S 0 80 1546.02 D 44652 D Common Stock 2026-09-03 4 S 0 80 1547.46 D 44572 D Common Stock 2026-09-03 4 S 0 40 1548.85 D 44532 D Common Stock 2026-09-03 4 S 0 40 1550.48 D 44492 D Common Stock 2026-09-03 4 S 0 120 1553.35 D 44372 D Common Stock 2026-09-03 4 S 0 40 1554.02 D 44332 D Common Stock 2026-09-03 4 S 0 78 1555.5677 D 44254 D Common Stock 2026-09-03 4 S 0 80 1557.785 D 44174 D Common Stock 2026-09-03 4 S 0 40 1558.9 D 44134 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 4, 2026. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1514.89 to a high of $1515.20. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1517.68 to a high of $1517.69. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1518.79 to a high of $1519.54. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1520.47 to a high of $1521.39. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1523.40 to a high of $1523.81 The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1526.57 to a high of $1527.05. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1529.22 to a high of $1530.19. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1530.45 to a high of $1530.59. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1533.17 to a high of $1534.14. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1534.17 to a high of $1534.79. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1535.28 to a high of $1536.03. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1537.18 to a high of $1537.90. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1538.34 to a high of $1538.48. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1539.46 to a high of $1539.76. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1540.85 to a high of $1541.16. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1542.65 to a high of $1542.70. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1543.75 to a high of $1544.62. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1545.94 to a high of $1546.10. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1547.04 to a high of $1547.88. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1552.99 to a high of $1553.86. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1555.48 to a high of $1555.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1557.62 to a high of $1557.95. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. By: /s/ Sharon Spehar Attorney-in-Fact For: Alper Ilkbahar 2026-09-08