Sandisk CTO reports 653-share tax withholding

Sandisk Corp executive Alper Ilkbahar reported a tax-related share withholding.

Rhea-AI Filing Summary

Sandisk Corp executive Alper Ilkbahar reported a tax-related share withholding. On this Form 4, 653 shares of common stock were disposed of at a price of $1,478.69 per share to satisfy tax obligations tied to vesting equity awards.

According to the filing, this was a payment of tax liability by delivering securities under Rule 16b-3(e), not an open-market sale. After the transaction, Ilkbahar directly holds 54,677 shares of Sandisk common stock.

Insider Trade Summary

Exercise Price or Tax Liability: 653 shares

Exercise Price or Tax Liability 1 txn

Insider Ilkbahar Alper

Role EVP, Chief Technology Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	653	$1,478.69	$966K

Holdings After Transaction: Common Stock — 54,677 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 taxes: 653 shares Price per share: $1,478.69 per share Shares held after transaction: 54,677 shares

3 metrics

Shares withheld for taxes 653 shares Tax-withholding disposition on common stock

Price per share $1,478.69 per share Value used for tax-withholding disposition

Shares held after transaction 54,677 shares Direct ownership after tax-withholding event

Key Terms

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

4 terms

Rule 16b-3(e) regulatory

"in accordance with Rule 16b-3(e)."

tax obligation financial

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

withholding securities financial

"by withholding securities incident to the vesting of securities"

vesting of securities financial

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

FAQ

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

What insider transaction did SNDK executive Alper Ilkbahar report?

Alper Ilkbahar reported a tax-withholding share disposition. The filing shows 653 Sandisk common shares were withheld and delivered to cover tax obligations related to vesting equity awards, rather than sold in an open-market transaction.

How many Sandisk (SNDK) shares were used for Alper Ilkbahar’s tax withholding?

A total of 653 Sandisk common shares were used. These shares were disposed of at $1,478.69 per share to satisfy tax obligations associated with the vesting of securities, as disclosed in the Form 4 footnote.

Was Alper Ilkbahar’s SNDK Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. The Form 4 describes it as payment of tax liability by withholding securities under Rule 16b-3(e), a routine mechanism for covering taxes on vesting equity awards.

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

Alper Ilkbahar holds 54,677 Sandisk common shares after the transaction. This post-transaction ownership figure reflects his direct holdings following the 653-share tax-withholding disposition reported on the Form 4.

What does Rule 16b-3(e) mean in Alper Ilkbahar’s SNDK Form 4 filing?

Rule 16b-3(e) governs certain insider transactions for compensation plans. In this case, it allows tax obligations on vesting securities to be satisfied by withholding shares, treating the disposition as part of a compensation arrangement rather than a market trade.

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

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Accepted by SEC EDGAR 05/27/2026 - 05:15 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)
05/25/2026

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	05/25/2026		F		653(1)	D	$1,478.69	54,677	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	05/27/2026
	** 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)