SNDK

SEC source: 0001363249-25-000020 · primary_doc.xml · nonDerivative · entry 1

Shook Ellyn · CIK 0001600370 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,771

F1 · shares: Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001363249-25-000021 · primary_doc.xml · nonDerivative · entry 1

MASSENGILL MATTHEW E · CIK 0001232826 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,840

F1 · shares: Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

SEC source: 0001363249-25-000014 · primary_doc.xml · nonDerivative · entry 1

Suzuki Miyuki · CIK 0001867852 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,493

F1 · shares: In connection with the Spin-Off, each WDC Restricted Stock Unit ("WDC RSU") held by the reporting person immediately prior to the Spin-Off was converted into Sandisk Restricted Stock Unit ("Sandisk RSU") using the Spinco ratio as per the agreement, and shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC RSUs immediately prior to the Spin-Off.

F2 · balance_after: Includes 4,800 shares of Sandisk Common Stock acquired in connection with the spin-off from Western Digital Corporation ("WDC") effective February 21, 2025 (the "Spin-Off"), as further described in the Issuer's current report on Form 8-K filed on February 24, 2025, where each WDC shareholder received one-third (1/3) of one share of Sandisk Common Stock for each share of WDC common stock held. Such acquisition was exempt from Section 16 of the Securities Exchange Act of 1934, as amended("Exchange Act") pursuant to Rule 16a-9 under the Exchange Act.

SEC source: 0001363249-25-000015 · primary_doc.xml · nonDerivative · entry 1

Caulfield Thomas · CIK 0001342570 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,685

F1 · shares: In connection with the Spin-Off, each WDC Restricted Stock Unit ("WDC RSU") held by the reporting person immediately prior to the Spin-Off was converted into Sandisk Restricted Stock Unit ("Sandisk RSU") using the Spinco ratio as per the agreement, and shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC RSUs immediately prior to the Spin-Off.

F2 · balance_after: Includes 5,992 shares of Sandisk Common Stock acquired in connection with the spin-off from Western Digital Corporation ("WDC") effective February 21, 2025 (the "Spin-Off"), as further described in the Issuer's current report on Form 8-K filed on February 24, 2025, where each WDC shareholder received one-third (1/3) of one share of Sandisk Common Stock for each share of WDC common stock held. Such acquisition was exempt from Section 16 of the Securities Exchange Act of 1934, as amended("Exchange Act") pursuant to Rule 16a-9 under the Exchange Act.

SEC source: 0001266824-25-000003 · primary_doc.xml · nonDerivative · entry 1

WESTERN DIGITAL CORP · CIK 0000106040 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,827,787

F1 · kind: On February 21, 2025 at 11:59pm Pacific time, Western Digital Corporation ("WDC") distributed approximately 80.1% of the issued and outstanding shares of common stock of Sandisk Corporation to the holders of WDC common stock at the close of business on February 12, 2025 in a pro rata dividend.

SEC source: 0001363249-25-000007 · primary_doc.xml · nonDerivative · entry 2

Goeckeler David · CIK 0001713941 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 485,946

F3 · shares: In connection with the Spin-Off, each WDC Performance Stock Unit ("WDC PSU") held by the reporting person immediately prior to the Spin-Off received one-third (1/3) of one share of Sandisk time-based restricted stock unit. These awards shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC PSUs immediately prior to the Spin-Off, but excluding any performance-based conditions.

SEC source: 0001363249-25-000007 · primary_doc.xml · nonDerivative · entry 1

Goeckeler David · CIK 0001713941 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 270,765

F1 · shares: In connection with the spin-off from Western Digital Corporation ("WDC") effective February 21, 2025, as further described in the Issuer's current report on Form 8-K filed on February 24, 2025 (the "Spin-Off"), each WDC Restricted Stock Unit ("WDC RSU") held by the reporting person immediately prior to the Spin-Off received one-third (1/3) of one share of Sandisk Restricted Stock Unit ("Sandisk RSU"), which shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC RSUs immediately prior to the Spin-Off.

F2 · balance_after: Includes 178,348 shares of Common Stock acquired in connection with the Spin-Off, where each WDC shareholder received one-third (1/3) of one share of Sandisk Common Stock for each share of WDC common stock held. Such acquisition was exempt from Section 16 of the Securities Exchange Act of 1934, as amended ("Exchange Act") pursuant to Rule 16a-9 under the Exchange Act.

SEC source: 0001363249-25-000008 · primary_doc.xml · nonDerivative · entry 2

Alexy Kimberly · CIK 0001336514 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,252

F2 · shares: In connection with the Spin-Off, each WDC Restricted Stock Unit ("WDC RSU") held by the reporting person immediately prior to the Spin-Off received one-third (1/3) of one share of Sandisk Restricted Stock Unit ("Sandisk RSU"), which shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC RSUs immediately prior to the Spin-Off.

SEC source: 0001363249-25-000008 · primary_doc.xml · nonDerivative · entry 1

Alexy Kimberly · CIK 0001336514 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Family Trust

Disclosed balance after: 8,574

F1 · price: The reporting person acquired these shares of Common Stock in connection with the spin-off from Western Digital Corporation ("WDC") effective February 21, 2025 (the "Spin-Off"), as further described in the Issuer's current report on Form 8-K filed on February 24, 2025, where each WDC shareholder received one-third (1/3) of one share of Sandisk Common Stock for each share of WDC common stock held. Such acquisitions were exempt from Section 16 of the Securities Exchange Act of 1934, as amended ("Exchange Act") pursuant to Rule 16a-9 under the Exchange Act.

SEC source: 0001363249-25-000009 · primary_doc.xml · nonDerivative · entry 1

Visoso Luis Felipe · CIK 0001816289 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,745

F1 · shares: In connection with the spin-off from Western Digital Corporation ("WDC") effective February 21, 2025, as further described in the Issuer's current report on Form 8-K filed on February 24, 2025 (the "Spin-Off"), each WDC Restricted Stock Unit ("WDC RSU") held by the reporting person immediately prior to the Spin-Off received one-third (1/3) of one share of Sandisk Restricted Stock Unit ("Sandisk RSU"), which shall have substantially the same vesting and other applicable terms and conditions as the corresponding WDC RSUs immediately prior to the Spin-Off.

SEC source: 0001266824-25-000002 · primary_doc.xml · nonDerivative · entry 1

WESTERN DIGITAL CORP · CIK 0000106040 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 144,863,251

F1 · shares: On February 13, 2024, Sandisk Corporation ("Sandisk") issued an additional 29,863,251 shares of its common stock to Western Digital Corporation ("WDC"), its sole stockholder, such that WDC holds an aggregate 144,863,251 shares of Sandisk common stock. These additional shares were issued to WDC to facilitate WDC's distribution of 80.1% of Sandisk common stock to WDC stockholders of record as of February 12, 2025, in connection with WDC's previously announced spin-off of its flash business.