Sandisk CFO withholds 27K shares for taxes

Q: How many SNDK shares were withheld on August 21, 2026?

On August 21, 2026, 1,589 shares of Sandisk Corp common stock were withheld. The transaction used code F and was described as payment of a tax obligation by withholding securities incident to the vesting of securities under Rule 16b-3(e).

Q: How many SNDK shares were withheld on August 20, 2026?

On August 20, 2026, 25,655 shares of Sandisk Corp common stock were withheld. This transaction also used code F and was characterized as payment of a tax obligation by withholding securities in connection with the vesting of equity awards.

Q: What does transaction code F mean in the SNDK Form 4 filing?

In this Sandisk Corp Form 4, code F indicates payment of a tax obligation by delivering or withholding securities. The footnote states the shares were withheld to satisfy tax obligations upon vesting, in accordance with Rule 16b-3(e).

Q: Were the SNDK insider transactions under a Rule 10b5-1 trading plan?

No. The Form 4 data shows the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), and the footnote only describes tax-obligation payment by withholding shares under Rule 16b-3(e), not a pre-arranged trading plan.

Sandisk Corp (SNDK) executive Luis Felipe Visoso, EVP & CFO, reported two Form 4 transactions involving company common stock.

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Form Type

Rhea-AI Filing Summary

Sandisk Corp (SNDK) executive Luis Felipe Visoso, EVP & CFO, reported two Form 4 transactions involving company common stock. On August 20 and 21, 2026, a total of 27,244 shares were disposed of under code F as payment of tax obligations by withholding shares upon vesting, pursuant to Rule 16b-3(e). These are tax-withholding events rather than open-market purchases or sales.

Insider Trade Summary

Tax Withholding: 27,244 shares

Tax Withholding 2 txns

Insider Visoso Luis Felipe

Role EVP & CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock ^F1	1,589	$1,596.08	$2.54M
Tax Withholding	Common Stock ^F1	25,655	$1,600.62	$41.06M

Holdings After Transaction: Common Stock — 137,814 shares (Direct)

Footnotes (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 for tax obligation (Aug 21, 2026): 1,589 shares Per-share value used (Aug 21, 2026): 1596.0800 Shares disposed for tax obligation (Aug 20, 2026): 25,655 shares +2 more

5 metrics

Shares disposed for tax obligation (Aug 21, 2026) 1,589 shares Code F disposition of Sandisk Corp common stock by EVP & CFO Luis Felipe Visoso

Per-share value used (Aug 21, 2026) 1596.0800 Price per share field for the August 21, 2026 code F transaction

Shares disposed for tax obligation (Aug 20, 2026) 25,655 shares Code F disposition of Sandisk Corp common stock by EVP & CFO Luis Felipe Visoso

Per-share value used (Aug 20, 2026) 1600.6200 Price per share field for the August 20, 2026 code F transaction

Total shares used for tax obligations 27,244 shares Sum of shares in the two code F transactions reported in the 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

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

What insider transactions did SNDK EVP & CFO Luis Felipe Visoso report?

He reported two Form 4 transactions in Sandisk Corp common stock, totaling 27,244 shares disposed on August 20 and 21, 2026. Both were code F events related to payment of tax obligations by withholding shares at vesting under Rule 16b-3(e).

How many SNDK shares were withheld on August 21, 2026?

On August 21, 2026, 1,589 shares of Sandisk Corp common stock were withheld. The transaction used code F and was described as payment of a tax obligation by withholding securities incident to the vesting of securities under Rule 16b-3(e).

How many SNDK shares were withheld on August 20, 2026?

On August 20, 2026, 25,655 shares of Sandisk Corp common stock were withheld. This transaction also used code F and was characterized as payment of a tax obligation by withholding securities in connection with the vesting of equity awards.

What does transaction code F mean in the SNDK Form 4 filing?

In this Sandisk Corp Form 4, code F indicates payment of a tax obligation by delivering or withholding securities. The footnote states the shares were withheld to satisfy tax obligations upon vesting, in accordance with Rule 16b-3(e).

Were the SNDK insider transactions under a Rule 10b5-1 trading plan?

No. The Form 4 data shows the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), and the footnote only describes tax-obligation payment by withholding shares under Rule 16b-3(e), not a pre-arranged trading plan.

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

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Available on EDGAR 08/24/2026 - 05:43 PM EDT Accepted by SEC EDGAR 08/24/2026 - 05:42 PM EDT

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^*

Visoso Luis Felipe

(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 & CFO

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/20/2026		F		25,655⁽¹⁾	D	$1,600.62	139,403	D
Common Stock	08/21/2026		F		1,589⁽¹⁾	D	$1,596.08	137,814	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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: Luis F. Visoso	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)

Source: View Original Filing on SEC EDGAR