[Form 4] Sandisk Corporation Insider Trading Activity

Rhea-AI Filing Summary

Bernard Shek, listed as Chief Legal Officer & Secretary and a director of Sandisk Corp (SNDK), reported two dispositions of common stock under Section 16. On 08/25/2025 he had 211 shares withheld at a per-share value of $46.78 to satisfy tax obligations, leaving 16,674 shares beneficially owned. On 08/27/2025 an additional 78 shares were disposed at $48.44, leaving 16,596 shares. The transactions are reported as Code F and are explained as withholding of shares to pay taxes upon vesting.

Insights

Securities Compliance Analyst

TL;DR: Routine tax-withholding dispositions were reported correctly; no unusual trading or timing indicated.

The Form 4 shows standard withholding of vested shares to cover tax obligations, reported under Code F with explicit share counts and prices. The filings reduce the reporting person’s direct beneficial ownership modestly from 16,952 to 16,596 shares across the two reported dates. Timing and explanation align with typical Rule 16b-3(e) practices and include an attorney-in-fact signature, indicating formal filing procedures were followed.

Corporate Governance Specialist

TL;DR: Transactions are administrative and non-material to company control; disclosure appears complete.

This disclosure identifies the reporting person, role, and street address, and documents two security dispositions by withholding to satisfy tax obligations. The amounts, prices, and resulting ownership levels are provided, and the explanatory note explicitly ties the actions to vesting-related tax withholding. There is no indication of opportunistic trading or change in control from the data presented.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Shek Bernard

Role Chief Legal Officer & Secty

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	78	$48.44	$4K
Tax Withholding	Common Stock	211	$46.78	$10K

Holdings After Transaction: Common Stock — 16,596 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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)
08/25/2025

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	08/25/2025		F		211(1)	D	$46.78	16,674	D
Common Stock	08/27/2025		F		78(1)	D	$48.44	16,596	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	08/27/2025
	** 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.