Sandisk Corp (SNDK) insider stock withheld on equity vesting

Rhea-AI Filing Summary

Sandisk Corp (SNDK) reported that Chief Legal Officer & Secretary Bernard Shek had two Form 4 transactions in Common Stock. On August 20 and 21, 2026, a total of 219 shares were disposed of under code F, described as payment of a tax obligation by withholding shares incident to the vesting of equity awards in accordance with Rule 16b-3(e). These are tax-withholding dispositions rather than open-market sales, and no post-transaction holdings are reported in this filing.

Insider Trade Summary

Net Seller: 219 shares

Net Sell 2 txns

Insider Shek Bernard

Role Chief Legal Officer & Secty

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	108	$1,596.08	$172K
Tax Withholding	Common Stock F1	111	$1,600.62	$178K

Holdings After Transaction: Common Stock — 30,696 shares (Direct)

Footnotes (1)

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

Key Figures

Shares disposed (tax withholding) on 2026-08-21: 108 shares of Common Stock Per-share value on 2026-08-21: $1,596.08 per share Shares disposed (tax withholding) on 2026-08-20: 111 shares of Common Stock +2 more

5 metrics

Shares disposed (tax withholding) on 2026-08-21 108 shares of Common Stock Code F disposition for payment of tax obligation

Per-share value on 2026-08-21 $1,596.08 per share Used for 108-share tax-withholding disposition

Shares disposed (tax withholding) on 2026-08-20 111 shares of Common Stock Code F disposition for payment of tax obligation

Per-share value on 2026-08-20 $1,600.62 per share Used for 111-share tax-withholding disposition

Total shares for payment of tax obligation 219 shares of Common Stock Sum of two code F dispositions in this Form 4

Key Terms

Rule 16b-3(e), withholding securities, tax obligation

3 terms

Rule 16b-3(e) regulatory

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

withholding securities financial

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

tax obligation financial

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

FAQ

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

The Form 4 reports two code F transactions where Bernard Shek disposed of 108 shares on August 21, 2026 and 111 shares on August 20, 2026 of Sandisk Corp Common Stock to satisfy a tax obligation through share withholding.

Were Bernard Shek’s SNDK transactions open-market sales?

No. Both transactions are coded F and footnoted as “payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e),” indicating tax withholding on vesting rather than open-market sales.

How many SNDK shares were withheld for taxes in total?

Across the two reported transactions, 219 shares of Sandisk Corp Common Stock were withheld for payment of a tax obligation in connection with vesting equity awards, according to the Form 4 transaction summary.

What prices per share were used for the SNDK tax-withholding dispositions?

The Form 4 reports per-share values of $1,596.08 for the 108-share disposition on August 21, 2026 and $1,600.62 for the 111-share disposition on August 20, 2026, each applied to Sandisk Corp Common Stock.

Does the Form 4 state Bernard Shek’s SNDK holdings after these transactions?

No. The Form 4 fields for total shares following transaction are blank for both transactions, so this filing does not state Bernard Shek’s post-transaction Common Stock holdings.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/24/2026 - 05:42 PM Accepted by SEC EDGAR 08/24/2026 - 05:42 PM Learn about SEC filing dates

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 & Secty

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026

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	08/20/2026		F		111(1)	D	$1,600.62	30,804	D
Common Stock	08/21/2026		F		108(1)	D	$1,596.08	30,696	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	08/24/2026
	** 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)