Sandisk legal chief sells 600 shares at $1,525.60

Sandisk Corp’s Chief Legal Officer disclosed a 600-share sale under a pre-arranged Rule 10b5-1 trading plan, leaving him with 29,884 shares directly held.

Rhea-AI Filing Summary

Sandisk Corp (SNDK) reported that its Chief Legal Officer & Secretary, Bernard Shek, sold 600 shares of common stock on September 1, 2026 in a sale characterized as an open market or private transaction at a reported price of $1,525.60 per share.

After this transaction, he directly held 29,884 shares of Sandisk common stock. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted on March 4, 2026, indicating they were pre-arranged under that plan.

Insider Trade Summary 10b5-1

Net Seller: 600 shares

Net Sell 1 txn

Insider Shek Bernard

Role Chief Legal Officer & Secty

Sold 600 shs ($915K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	600	$1,525.60	$915K

Holdings After Transaction: Common Stock — 29,884 shares (Direct)

Footnotes (1)

1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.

Key Figures

Shares sold: 600 shares Sale price per share: $1,525.60 per share Shares held after transaction: 29,884 shares +2 more

5 metrics

Shares sold 600 shares Common stock sale on September 1, 2026

Sale price per share $1,525.60 per share Reported price for the 600-share sale on September 1, 2026

Shares held after transaction 29,884 shares Direct holdings of Bernard Shek after the reported sale

Net shares sold 600 shares Net share change across all reported transactions in this Form 4

Rule 10b5-1 plan adoption date March 4, 2026 Date the reporting person adopted the trading plan used for these sales

Key Terms

Rule 10b5-1 trading plan, open market or private transaction, Chief Legal Officer & Secty

3 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

open market or private transaction financial

"Sale in open market or private transaction"

Chief Legal Officer & Secty other

"officer_title: Chief Legal Officer & Secty"

FAQ

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

What insider transaction did Sandisk Corp (SNDK) disclose in this Form 4?

Sandisk Corp disclosed that Chief Legal Officer & Secretary Bernard Shek sold 600 shares of common stock on September 1, 2026, reported as an open market or private transaction under a Rule 10b5-1 trading plan.

At what price were the Sandisk (SNDK) shares sold by the insider?

The filing reports that the 600 Sandisk common shares were sold at a price of $1,525.60 per share. This price is stated as a per-share amount in the transaction details for the September 1, 2026 sale.

How many Sandisk (SNDK) shares does Bernard Shek hold after the reported sale?

Following the reported transaction, Bernard Shek directly held 29,884 shares of Sandisk common stock. This post-transaction holding is stated in the Form 4 as the total shares following the sale.

Was the Sandisk (SNDK) insider sale made under a Rule 10b5-1 trading plan?

Yes. The Form 4 states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Bernard Shek on March 4, 2026, and the filing’s Rule 10b5-1 checkbox is affirmed.

What is Bernard Shek’s role at Sandisk Corp (SNDK) in this Form 4?

In this Form 4, Bernard Shek is identified as an officer of Sandisk Corp with the title Chief Legal Officer & Secty. He is not listed as a director or ten percent owner in the reporting information.

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

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Available on EDGAR 09/02/2026 - 06:58 PM EDT Accepted by SEC EDGAR 09/02/2026 - 06:57 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).

X

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)
09/01/2026

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	09/01/2026		S(1)		600	D	$1,525.6	29,884	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. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026.

	By: /s/ Van Huynh Attorney-in-Fact For: Bernard Shek	09/02/2026
	** 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)