Sandisk CLO granted 1,001 restricted stock units

Sandisk’s Chief Legal Officer received a restricted stock award, with a portion of shares withheld to cover tax obligations upon vesting.

Available on EDGAR 09/21/2026 - 06:03 PM EDT Accepted by SEC EDGAR 09/21/2026 - 06:03 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Sandisk Corp (SNDK) reported that Chief Legal Officer and Secretary Bernard Shek received an award of 1,001 shares of common stock as restricted stock units on September 17, 2026. On September 20, 2026, 118 shares were withheld to pay related tax obligations upon vesting of securities, with no Rule 10b5-1 trading plan reported.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Shek Bernard

Role Chief Legal Officer and Secty

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F2	118	$1,791.82	$211K
Grant/Award	Common Stock F1	1,001	$0.00	$0.00

Holdings After Transaction: Common Stock — 26,188 shares (Direct)

Footnotes (2)

1. F1. 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.
2. F2. Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Key Figures

Restricted stock units granted: 1,001 shares Grant price per share: $0.00 per share Shares withheld for tax: 118 shares +1 more

4 metrics

Restricted stock units granted 1,001 shares Grant of restricted stock units on September 17, 2026

Grant price per share $0.00 per share Compensation-related award of restricted stock units

Shares withheld for tax 118 shares Withheld on September 20, 2026 to pay tax obligation upon vesting

Per-share value for tax withholding $1,791.82 per share Value applied to 118 withheld shares on September 20, 2026

Key Terms

restricted stock units, contingent right, Rule 16b-3(e), tax obligation by withholding securities

4 terms

restricted stock units financial

"Represents the grant of restricted stock units to the Reporting Person."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each restricted stock unit represents a contingent right to receive one share"

Rule 16b-3(e) regulatory

"withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e)"

tax obligation by withholding securities financial

"Payment of tax obligation by withholding securities incident to the vesting"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did SNDK disclose for Bernard Shek in this Form 4?

Bernard Shek received an award of 1,001 shares of Sandisk common stock as restricted stock units on September 17, 2026, and 118 shares were withheld on September 20, 2026 to pay tax obligations related to vesting.

Was the Sandisk (SNDK) insider award to Bernard Shek a market purchase?

No. The Form 4 shows a grant of 1,001 restricted stock units, each representing a right to receive one Sandisk common share. The transaction price is reported as $0.00 per share, indicating a compensation-related award, not an open-market purchase.

How many Sandisk (SNDK) shares were withheld from Bernard Shek for taxes?

The filing reports that 118 shares of Sandisk common stock were withheld on September 20, 2026 as payment of a tax obligation incident to the vesting of securities, in accordance with Rule 16b-3(e).

At what price were the tax-withheld SNDK shares valued in Bernard Shek’s Form 4?

The 118 tax-withheld shares are reported at a value of $1,791.82 per share on September 20, 2026. This figure is used in the filing to value the shares withheld to satisfy the tax obligation.

Does the Sandisk (SNDK) Form 4 indicate a Rule 10b5-1 trading plan for Bernard Shek?

No. The Form 4 indicates no Rule 10b5-1 plan is reported; the document-level checkbox for such a trading plan is unchecked, and the footnotes do not state that the transactions were made under a plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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 CALIFORNIA 95035

(City) (State) (Zip)

UNITED STATES

(Country)

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 and Secty

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026

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

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

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

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	09/17/2026		A		1,001(1)	A	$0.0	26,306	D
Common Stock	09/20/2026		F		118(2)	D	$1,791.82	26,188	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.

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

	By: /s/ Sharon Spehar Attorney-in-Fact For: Bernard Shek	09/21/2026
	** 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.
* Form 4: SEC 1474 (03-26)