[Form 4] Sandisk Corp Insider Trading Activity

Rhea-AI Filing Summary

Sandisk Corp (SNDK)11/20/2025, 109 shares of common stock were disposed of at $195.96, leaving 34,321 shares beneficially owned directly. On 11/21/2025, a further 107 shares were disposed of at $200.27, leaving 34,214 shares held directly.

The filing explains that these transactions reflect payment of tax obligations by withholding shares as they vested under Rule 16b-3(e), rather than open-market selling for investment purposes.

11/24/2025 - 06:25 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Shek Bernard

(Last) (First) (Middle)

C/O SANDISK CORPORATION

951 SANDISK DRIVE

(Street)

MILPITAS CA 95035

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Sandisk Corp [ SNDK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer & Secty

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/20/2025		F		109(1)	D	$195.96	34,321	D
Common Stock	11/21/2025		F		107(1)	D	$200.27	34,214	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

	By: /s/ Van Huynh Attorney-in-Fact For: Bernard Shek	11/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Sandisk (SNDK) disclose in this Form 4 filing?

The filing reports stock dispositions by Bernard Shek, Sandisk Corp's Chief Legal Officer & Secretary, related to tax withholding on vesting equity awards.

How many Sandisk (SNDK) shares were disposed of in the reported transactions?

On 11/20/2025, 109 shares of common stock were disposed of at $195.96, and on 11/21/2025, 107 shares were disposed of at $200.27.

How many Sandisk (SNDK) shares does the insider hold after these transactions?

After the 11/20/2025 transaction, Bernard Shek beneficially owned 34,321 shares directly, and after the 11/21/2025 transaction, he held 34,214 shares directly.

Why were Sandisk (SNDK) shares withheld from Bernard Shek?

The explanation states that the dispositions were for payment of tax obligations by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Is this a joint Form 4 filing for Sandisk (SNDK)?

No. The form is indicated as filed by one reporting person, covering only Bernard Shek.

What is Bernard Shek’s role at Sandisk (SNDK)?

Bernard Shek is identified as an Officer of Sandisk Corp, serving as Chief Legal Officer & Secretary.