Sandisk (SNDK)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-20 10b5-1 Pre-arranged Plan: No --- 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: 2026-08-20 | Code: M (Exercise of derivative) Shares: +276 | Price: $0.00 Shares Owned After: 50,259 | Ownership: D (Direct) Footnotes: [F1] The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. [Transaction #2] Security: Common Stock Date: 2026-08-20 | Code: F (Payment of exercise/tax) Shares: -276 | Price: $1,600.62 Total Value: $441,771.12 Shares Owned After: 49,983 | Ownership: D (Direct) Footnotes: [F2] Represents shares withheld to satisfy the reporting person's tax withholding obligation in connection with the transaction described in Footnote (1) and is exempt pursuant to Rule 16b-3(e). [Transaction #3] Security: Common Stock Date: 2026-08-20 | Code: F (Payment of exercise/tax) Shares: -163 | Price: $1,600.62 Total Value: $260,901.06 Shares Owned After: 49,820 | Ownership: D (Direct) Footnotes: [F3] Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). [Transaction #4] Security: Common Stock Date: 2026-08-21 | Code: F (Payment of exercise/tax) Shares: -320 | Price: $1,596.08 Total Value: $510,745.60 Shares Owned After: 49,500 | Ownership: D (Direct) Footnotes: [F3] Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). --- Derivative Transactions --- [Transaction #1] Security: Performance Shares Date: 2026-08-20 | Code: M (Exercise of derivative) Shares: -276 | Price: $0.00 Shares Owned After: 148,770 | Ownership: D (Direct) Footnotes: [F1] The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. [F1] The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. [F1] The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. --- Footnotes (Complete Index) --- F1: The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. F2: Represents shares withheld to satisfy the reporting person's tax withholding obligation in connection with the transaction described in Footnote (1) and is exempt pursuant to Rule 16b-3(e). F3: Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). --- Signature --- /s/ By: /s/ Van Huynh Attorney-in-Fact For: Alper Ilkbahar (2026-08-24)