Sandisk legal officer reports tax-withholding share disposition

Sandisk Corp Chief Legal Officer and Secretary Bernard Shek reported a small share disposition related to taxes rather than an open‑market trade.

Rhea-AI Filing Summary

Sandisk Corp Chief Legal Officer and Secretary Bernard Shek reported a small share disposition related to taxes rather than an open‑market trade. On the reported date, 117 shares of common stock were withheld at a price of 2,184.75 per share to satisfy tax obligations tied to vesting, as permitted under Rule 16b-3(e). After this tax-withholding event, Shek directly held 32,115 shares of Sandisk common stock, indicating the transaction affected only a small portion of his overall holdings.

Insider Trade Summary

Exercise Price or Tax Liability: 117 shares

Exercise Price or Tax Liability 1 txn

Insider Shek Bernard

Role Chief Legal Officer & Secty

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	117	$2,184.75	$256K

Holdings After Transaction: Common Stock — 32,115 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

Tax-withheld shares: 117 shares Withholding price: $2,184.75 per share Shares after transaction: 32,115 shares +2 more

5 metrics

Tax-withheld shares 117 shares Common Stock withheld to cover tax obligation

Withholding price $2,184.75 per share Price used for tax-withholding disposition

Shares after transaction 32,115 shares Total direct holdings following tax withholding

Disposition type Tax-withholding disposition Form 4 code F, payment of tax liability

Tax-withholding events 1 transaction transactionSummary taxWithholdingCount

Key Terms

Rule 16b-3(e), tax obligation, tax-withholding disposition, Common Stock

4 terms

Rule 16b-3(e) regulatory

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

tax obligation financial

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

tax-withholding disposition financial

"transaction_action: tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What insider transaction did Sandisk (SNDK) report for Bernard Shek?

Sandisk reported that Chief Legal Officer Bernard Shek had 117 common shares withheld to cover tax obligations on vesting. This was a tax-withholding disposition, not an open-market sale, and is a routine administrative transaction under Rule 16b-3(e).

Did Bernard Shek sell Sandisk (SNDK) shares in the open market?

No, the filing shows no open-market sale. Instead, 117 shares were withheld by the company to satisfy tax obligations triggered by vesting of securities, classified as a tax-withholding disposition under Rule 16b-3(e), which is a standard administrative mechanism.

How many Sandisk (SNDK) shares were involved in Bernard Shek’s tax withholding?

The transaction involved 117 shares of Sandisk common stock, withheld at a reported price of $2,184.75 per share. These shares were used to cover tax obligations rather than being sold in the market to third-party buyers.

What are Bernard Shek’s Sandisk (SNDK) holdings after this Form 4 transaction?

After the tax-withholding disposition, Bernard Shek directly held 32,115 shares of Sandisk common stock. This shows the transaction affected only a small fraction of his total direct stake, leaving his overall position largely unchanged.

How does Rule 16b-3(e) apply to the Sandisk (SNDK) insider filing?

Rule 16b-3(e) allows insiders to use share withholding to pay tax obligations on equity awards. In this case, 117 Sandisk shares were withheld upon vesting to satisfy taxes, and the filing explicitly cites this rule as the basis for the disposition.

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

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Accepted by SEC EDGAR 06/22/2026 - 07:32 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^*

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)
06/20/2026

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	06/20/2026		F		117(1)	D	$2,184.75	32,115	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	06/22/2026
	** 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)