Sandisk CTO has 654 shares withheld for taxes

Sandisk Corp (SNDK) reported an insider tax-related share disposition by EVP and Chief Technology Officer Alper Ilkbahar.

Rhea-AI Filing Summary

Sandisk Corp (SNDK) reported an insider tax-related share disposition by EVP and Chief Technology Officer Alper Ilkbahar. On 2026-08-25, 654 shares of common stock were withheld to satisfy a tax obligation incident to the vesting of securities under Rule 16b-3(e). Following this withholding, Ilkbahar directly holds 48,846 shares of Sandisk common stock.

Insider Trade Summary

Tax Withholding: 654 shares

Tax Withholding 1 txn

Insider Ilkbahar Alper

Role EVP, Chief Technology Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	654	$1,480.77	$968K

Holdings After Transaction: Common Stock — 48,846 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 withheld for tax: 654 shares Transaction price per share: 1,480.77 Shares owned after transaction: 48,846 shares

3 metrics

Shares withheld for tax 654 shares Code F tax-withholding disposition on 2026-08-25

Transaction price per share 1,480.77 Reported price per share for the 654-share tax-withholding transaction

Shares owned after transaction 48,846 shares Directly held by Alper Ilkbahar following the 2026-08-25 transaction

Key Terms

Form 4, Rule 16b-3(e), tax obligation, withholding securities, +1 more

5 terms

Form 4 regulatory

"reported an insider tax-related share disposition by EVP"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Rule 16b-3(e) regulatory

"withholding securities incident to the vesting of securities"

tax obligation financial

"Payment of tax obligation by withholding securities incident"

withholding securities financial

"Payment of tax obligation by withholding securities incident"

Exercise Price or Tax Liability financial

"exercisePriceOrTaxLiabilityCount/exercisePriceOrTaxLiabilityShares"

FAQ

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

What insider transaction did Sandisk Corp (SNDK) report for Alper Ilkbahar?

Sandisk reported that EVP and Chief Technology Officer Alper Ilkbahar had 654 shares of common stock withheld on 2026-08-25 to pay a tax obligation related to vesting securities, classified as a Form 4 code F transaction.

Was the Sandisk (SNDK) Form 4 transaction an open-market sale?

No. The transaction was a code F event: shares were withheld as payment of tax obligation upon vesting of securities in accordance with Rule 16b-3(e), not an open-market sale of Sandisk shares.

How many Sandisk (SNDK) shares does Alper Ilkbahar hold after this Form 4?

After the tax-withholding transaction, Alper Ilkbahar directly holds 48,846 shares of Sandisk common stock, as reported in the Form 4 as the total shares following the transaction.

What was the reported price per share for the Sandisk (SNDK) tax-withholding transaction?

The Form 4 reports a transaction price of 1,480.77 per share for the 654 shares withheld to satisfy the tax obligation associated with vesting securities.

Is the Sandisk (SNDK) Form 4 transaction under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not checked (aff_10b5_one is false), and the footnote describes only tax withholding incident to vesting under Rule 16b-3(e).

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

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Available on EDGAR 08/27/2026 - 06:05 PM EDT Accepted by SEC EDGAR 08/27/2026 - 06:04 PM EDT 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^*

Ilkbahar Alper

(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)
	EVP, Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2026

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	08/25/2026		F		654(1)	D	$1,480.77	48,846	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: Alper Ilkbahar	08/27/2026
	** 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)