[Form 4] Sandisk Corp Insider Trading Activity

Rhea-AI Filing Summary

SanDisk Corp (SNDK) reported an insider equity award for director Necip Sayiner on a Form 4. On 11/18/2025, he received 979 restricted stock units, each representing a contingent right to receive one share of SanDisk common stock. The transaction price is listed as $0.0, indicating this is an equity compensation grant rather than an open‑market purchase.

Following this grant, Sayiner’s beneficial ownership in SanDisk common stock is reported as 4,750 shares, held directly. No derivative securities were reported in Table II, underscoring that this filing focuses on the new restricted stock unit award and its impact on his direct common stock holdings.

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^*

Sayiner Necip

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/18/2025

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	11/18/2025		A		979(1)	A	$0.0	4,750	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. 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.

	By: /s/ Van Huynh Attorney-in-Fact For: Necip Sayiner	11/19/2025
	** 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 insider transaction did SanDisk (SNDK) disclose in this Form 4?

The filing discloses that director Necip Sayiner received a grant of 979 restricted stock units of SanDisk common stock on 11/18/2025.

How many SanDisk (SNDK) shares does the director own after this transaction?

After the reported grant, Necip Sayiner is shown as beneficially owning 4,750 shares of SanDisk common stock in total.

What type of security was granted in the SanDisk (SNDK) Form 4?

The transaction is a grant of restricted stock units, with each unit representing a contingent right to receive one share of SanDisk common stock.

Was there a purchase price for the SanDisk (SNDK) restricted stock units?

The Form 4 lists the transaction price as $0.0, indicating that the restricted stock units were granted as compensation rather than bought on the market.

Does this SanDisk (SNDK) Form 4 report any derivative securities?

Table II for derivative securities is present but contains no filled-in derivative positions, so the filing centers on the 979 restricted stock units grant.

What is the relationship of the reporting person to SanDisk (SNDK)?

The reporting person, Necip Sayiner, is identified in the filing as a director of SanDisk Corp.