Sandisk CEO sells 33,841 shares, gets RSUs

Sandisk Corp’s Chairman & CEO reported a grant of 3,296 RSUs and open‑market sales of 33,841 shares executed under a pre‑arranged Rule 10b5‑1 plan.

Rhea-AI Filing Summary

Sandisk Corp (SNDK) reported that Chairman & CEO David Goeckeler received a grant of 3,296 restricted stock units on September 17, 2026, each representing a contingent right to one share of common stock.

On the same date, he sold 33,841 shares of common stock in multiple open-market transactions at weighted-average prices in the mid-$1,500s, all effected pursuant to a Rule 10b5-1 trading plan adopted on May 29, 2026.

Insider Trade Summary 10b5-1

Net Seller: 33,841 shares

Net Sell 16 txns

Insider Goeckeler David

Role Chairman & CEO

Sold 33,841 shs ($53.27M)

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	3,296	$0.00	$0.00
Sale	Common Stock F2, F3	40	$1,567.2555	$63K
Sale	Common Stock F2, F4	9,604	$1,568.9988	$15.07M
Sale	Common Stock F2, F5	910	$1,570.0407	$1.43M
Sale	Common Stock F2, F6	4,558	$1,571.2108	$7.16M
Sale	Common Stock F2, F7	1,157	$1,572.6026	$1.82M
Sale	Common Stock F2, F8	306	$1,573.1541	$481K
Sale	Common Stock F2, F9	2,588	$1,574.5674	$4.07M
Sale	Common Stock F2, F10	2,778	$1,575.5829	$4.38M
Sale	Common Stock F2, F11	4,139	$1,576.8204	$6.53M
Sale	Common Stock F2, F12	2,876	$1,578.3401	$4.54M
Sale	Common Stock F2, F13	640	$1,579.405	$1.01M
Sale	Common Stock F2, F14	1,480	$1,580.2465	$2.34M
Sale	Common Stock F2, F15	1,080	$1,583.7989	$1.71M
Sale	Common Stock F2, F16	1,520	$1,585.8487	$2.41M
Sale	Common Stock F2	165	$1,587.00	$262K

Holdings After Transaction: Common Stock — 382,865 shares (Direct)

Footnotes (16)

1. F1. Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
2. F2. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 29, 2026.
3. F3. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1567.00 to a high of $1567.49. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
4. F4. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1568.44 to a high of $1569.03. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
5. F5. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1569.605 to a high of $1570.56. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
6. F6. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1570.62 to a high of $1571.61. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
7. F7. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1571.74 to a high of $1572.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
8. F8. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1572.92 to a high of $1573.71. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
9. F9. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1574.24 to a high of $1575.11. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
10. F10. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1575.30 to a high of $1576.20. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
11. F11. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1576.59 to a high of $1577.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
12. F12. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1577.90 to a high of $1578.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
13. F13. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1579.00 to a high of $1579.72. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
14. F14. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1580.06 to a high of $1580.51. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
15. F15. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1583.65 to a high of $1584.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.
16. F16. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1585.04 to a high of $1586.01. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

Key Figures

Restricted stock units granted: 3,296 units Shares sold: 33,841 shares Lowest sale price range: $1,567.00 per share +3 more

6 metrics

Restricted stock units granted 3,296 units Grant to David Goeckeler on September 17, 2026

Shares sold 33,841 shares Open‑market sales on September 17, 2026

Lowest sale price range $1,567.00 per share Low end of price range for one reported sale tranche

Highest sale price range $1,587.00 per share High end of price range for one reported sale tranche

Rule 10b5-1 plan adoption date May 29, 2026 Plan governing the reported September 17, 2026 sales

Net share change from buys and sells Net disposition of 33,841 shares and acquisition of 3,296 RSUs Across all reported non-derivative transactions in this Form 4

Key Terms

restricted stock units, Rule 10b5-1 trading plan, weighted average sale price per share

3 terms

restricted stock units financial

"Represents the grant of restricted stock units to the Reporting Person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 10b5-1 trading plan regulatory

"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.

weighted average sale price per share financial

"Represents the weighted average sale price per share"

FAQ

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

What insider transactions did Sandisk Corp (SNDK) report for David Goeckeler?

Sandisk Corp reported that David Goeckeler received a grant of 3,296 restricted stock units and sold 33,841 shares of common stock on September 17, 2026, in multiple open‑market transactions under a Rule 10b5‑1 trading plan.

How many Sandisk (SNDK) shares did David Goeckeler sell and at what prices?

David Goeckeler sold 33,841 shares of Sandisk common stock on September 17, 2026, in multiple transactions at weighted-average prices within ranges from lows of about $1,567.00 to highs up to $1,587.00, as detailed in the footnotes.

What equity award did David Goeckeler receive from Sandisk (SNDK)?

He received a grant of 3,296 restricted stock units on September 17, 2026. Each restricted stock unit represents a contingent right to receive one share of Sandisk’s common stock, subject to the award’s terms and conditions.

Were the recent Sandisk (SNDK) insider sales under a Rule 10b5-1 plan?

Yes. The filing states that the sales reported for September 17, 2026 were effected pursuant to a Rule 10b5‑1 trading plan adopted on May 29, 2026, indicating they followed a pre‑arranged trading schedule.

Does the Form 4 disclose David Goeckeler’s Sandisk (SNDK) holdings after these trades?

The Form 4 describes the grant of 3,296 RSUs and the sale of 33,841 shares, but it does not state a total number of Sandisk shares owned by David Goeckeler following these transactions.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/21/2026 - 06:04 PM Accepted by SEC EDGAR 09/21/2026 - 06:03 PM 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^*

Goeckeler David

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026

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	09/17/2026		A		3,296(1)	A	$0.0	416,706	D
Common Stock	09/17/2026		S(2)		40	D	$1,567.2555(3)	416,666	D
Common Stock	09/17/2026		S(2)		9,604	D	$1,568.9988(4)	407,062	D
Common Stock	09/17/2026		S(2)		910	D	$1,570.0407(5)	406,152	D
Common Stock	09/17/2026		S(2)		4,558	D	$1,571.2108(6)	401,594	D
Common Stock	09/17/2026		S(2)		1,157	D	$1,572.6026(7)	400,437	D
Common Stock	09/17/2026		S(2)		306	D	$1,573.1541(8)	400,131	D
Common Stock	09/17/2026		S(2)		2,588	D	$1,574.5674(9)	397,543	D
Common Stock	09/17/2026		S(2)		2,778	D	$1,575.5829(10)	394,765	D
Common Stock	09/17/2026		S(2)		4,139	D	$1,576.8204(11)	390,626	D
Common Stock	09/17/2026		S(2)		2,876	D	$1,578.3401(12)	387,750	D
Common Stock	09/17/2026		S(2)		640	D	$1,579.405(13)	387,110	D
Common Stock	09/17/2026		S(2)		1,480	D	$1,580.2465(14)	385,630	D
Common Stock	09/17/2026		S(2)		1,080	D	$1,583.7989(15)	384,550	D
Common Stock	09/17/2026		S(2)		1,520	D	$1,585.8487(16)	383,030	D
Common Stock	09/17/2026		S(2)		165	D	$1,587	382,865	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. Represents the grant of restricted stock units to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

2. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 29, 2026.

3. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1567.00 to a high of $1567.49. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

4. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1568.44 to a high of $1569.03. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

5. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1569.605 to a high of $1570.56. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

6. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1570.62 to a high of $1571.61. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

7. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1571.74 to a high of $1572.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

8. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1572.92 to a high of $1573.71. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

9. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1574.24 to a high of $1575.11. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

10. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1575.30 to a high of $1576.20. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

11. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1576.59 to a high of $1577.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

12. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1577.90 to a high of $1578.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

13. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1579.00 to a high of $1579.72. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

14. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1580.06 to a high of $1580.51. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

15. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1583.65 to a high of $1584.00. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

16. Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $1585.04 to a high of $1586.01. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

	By: /s/ Sharon Spehar Attorney-in-Fact For: David Goeckeler	09/21/2026
	** 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)