=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-09-03
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Sandisk Corp (SNDK)
CIK: 0002023554
--- Reporting Owner ---
Name: Ilkbahar Alper
CIK: 0002059630
Role: Officer (EVP & Chief Technology Officer)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-09-03 | Code: S (Open market sale)
Shares: -120 | Price: $1,561.69
Total Value: $187,402.80
Shares Owned After: 44,014 | Ownership: D (Direct)
Footnotes:
[F1] This Form 4 reports additional transactions effected on September 3, 2026 that were reported in part on a separate Form 4 filed on the same date, September 8, 2026.
[F2] 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.
[F3] Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1561.31 to a high of $1562.01. 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.
[Transaction #2]
Security: Common Stock
Date: 2026-09-03 | Code: S (Open market sale)
Shares: -200 | Price: $1,563.68
Total Value: $312,736.80
Shares Owned After: 43,814 | Ownership: D (Direct)
Footnotes:
[F2] 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.
[F4] Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1563.22 to a high of $1564.20. 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.
[Transaction #3]
Security: Common Stock
Date: 2026-09-03 | Code: S (Open market sale)
Shares: -40 | Price: $1,564.40
Total Value: $62,576.00
Shares Owned After: 43,774 | Ownership: D (Direct)
Footnotes:
[F2] 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.
[Transaction #4]
Security: Common Stock
Date: 2026-09-03 | Code: S (Open market sale)
Shares: -40 | Price: $1,571.04
Total Value: $62,841.64
Shares Owned After: 43,734 | Ownership: D (Direct)
Footnotes:
[F2] 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.
[F5] Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1571.03 to a high of $1571.25. 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.
[Transaction #5]
Security: Common Stock
Date: 2026-09-03 | Code: F (Payment of exercise/tax)
Shares: -3,244 | Price: $1,554.99
Total Value: $5,044,387.56
Shares Owned After: 40,490 | Ownership: D (Direct)
Footnotes:
[F6] Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
--- Footnotes (Complete Index) ---
F1: This Form 4 reports additional transactions effected on September 3, 2026 that were reported in part on a separate Form 4 filed on the same date, September 8, 2026.
F2: 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.
F3: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1561.31 to a high of $1562.01. 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.
F4: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1563.22 to a high of $1564.20. 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.
F5: Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1571.03 to a high of $1571.25. 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.
F6: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
--- Signature ---
/s/ By: /s/ Sharon Spehar Attorney-in-Fact For: Alper Ilkbahar (2026-09-08)
