Sandisk (SNDK) CTO uses 2,251 shares to cover equity award taxes

Rhea-AI Filing Summary

Sandisk Corp EVP and Chief Technology Officer Alper Ilkbahar reported a routine tax-withholding share disposition. On the vesting of equity awards, 2,251 shares of common stock were withheld at an indicated price of $913.02 per share to cover tax obligations under Rule 16b-3(e). Following this non‑market transaction, Ilkbahar directly holds 55,811 shares of Sandisk common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ilkbahar Alper

Role EVP, Chief Technology Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,251	$913.02	$2.06M

Holdings After Transaction: Common Stock — 55,811 shares (Direct, null)

Footnotes (1)

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Key Figures

Tax-withholding shares: 2,251 shares Indicated price per share: $913.02/share Shares held after transaction: 55,811 shares +1 more

4 metrics

Tax-withholding shares 2,251 shares Shares withheld to cover tax obligation on vesting

Indicated price per share $913.02/share Value used for tax-withholding disposition

Shares held after transaction 55,811 shares Direct common stock holdings following withholding

Tax-withholding transactions 1 transaction, 2,251 shares From transactionSummary taxWithholdingCount and taxWithholdingShares

Key Terms

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

3 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

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

Form 4 Insider Transactions: What Each Field Means →

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)
04/20/2026

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	04/20/2026		F		2,251(1)	D	$913.02	55,811	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	04/21/2026
	** 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)

FAQ

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

Alper Ilkbahar reported a tax-related share disposition. Sandisk withheld 2,251 common shares from vested equity at $913.02 per share to cover tax obligations, a non-market event under Rule 16b-3(e), leaving him with 55,811 directly held shares.

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

No, the transaction was not an open-market sale. Shares were withheld by Sandisk to satisfy Ilkbahar’s tax obligation upon vesting of equity awards under Rule 16b-3(e), meaning no discretionary sale into the market occurred.

How many Sandisk (SNDK) shares does Alper Ilkbahar hold after the filing?

After the tax-withholding transaction, Alper Ilkbahar directly holds 55,811 Sandisk common shares. This figure reflects his position following the withholding of 2,251 shares used to cover tax obligations linked to vested equity awards.

What does transaction code F mean in the Sandisk (SNDK) Form 4?

Transaction code F indicates a tax-withholding disposition. In this Sandisk Form 4, 2,251 shares were delivered back to the company at $913.02 per share to pay Ilkbahar’s tax liability when equity awards vested, not a market sale.

How large was the tax-withholding disposition for Sandisk (SNDK) CTO Ilkbahar?

The tax-withholding disposition involved 2,251 common shares at an indicated $913.02 per share. These shares were withheld by Sandisk to satisfy Ilkbahar’s tax obligation on vested equity awards, as described under Rule 16b-3(e) in the filing footnote.