David Goeckeler - 17 Sep 2026 Form 4 Insider Report for Sandisk Corp (SNDK)

Reporting relationship: Chairman & CEO, Director
Issuer ticker: SNDK
Reported as of: 17 Sep 2026
Net transaction value: -$53,272,704
SEC form: 4
Accepted by SEC: 21 Sep 2026, 18:03:52 UTC
Prior SEC filing: 16 Sep 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Sharon Spehar Attorney-in-Fact For: David Goeckeler

Key filing fact

David Goeckeler filed Form 4 for Sandisk Corp (SNDK) on 21 Sep 2026.

Key facts

This page summarizes David Goeckeler's Form 4 filing for Sandisk Corp (SNDK).
16 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 21 Sep 2026, 18:03.

Change

Previous filing in this sequence was filed on 16 Sep 2026.
Current net transaction value: -$53,272,704.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001713941 Primary reporting owner

Goeckeler David

Relationship: Chairman & CEO, Director
Address: C/O SANDISK CORPORATION, 951 SANDISK DRIVE, MILPITAS
Signature: By: /s/ Sharon Spehar Attorney-in-Fact For: David Goeckeler
Signature date: 21 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SNDK transaction

Common Stock

Award

Transaction value
Shares: +3,296
Change %: +0.8%
Price: $0.000000^*
Shares after: 416,706
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F1

SNDK transaction

Common Stock

Sale

Transaction value: $62,690
Shares: -40
Change %: -0.01%
Price: $1567.26
Shares after: 416,666
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F3

SNDK transaction

Common Stock

Sale

Transaction value: $15,068,664
Shares: -9,604
Change %: -2.3%
Price: $1569.00
Shares after: 407,062
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F4

SNDK transaction

Common Stock

Sale

Transaction value: $1,428,737
Shares: -910
Change %: -0.22%
Price: $1570.04
Shares after: 406,152
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F5

SNDK transaction

Common Stock

Sale

Transaction value: $7,161,579
Shares: -4,558
Change %: -1.1%
Price: $1571.21
Shares after: 401,594
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F6

SNDK transaction

Common Stock

Sale

Transaction value: $1,819,501
Shares: -1,157
Change %: -0.29%
Price: $1572.60
Shares after: 400,437
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F7

SNDK transaction

Common Stock

Sale

Transaction value: $481,385
Shares: -306
Change %: -0.08%
Price: $1573.15
Shares after: 400,131
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F8

SNDK transaction

Common Stock

Sale

Transaction value: $4,074,980
Shares: -2,588
Change %: -0.65%
Price: $1574.57
Shares after: 397,543
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F9

SNDK transaction

Common Stock

Sale

Transaction value: $4,376,969
Shares: -2,778
Change %: -0.7%
Price: $1575.58
Shares after: 394,765
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F10

SNDK transaction

Common Stock

Sale

Transaction value: $6,526,460
Shares: -4,139
Change %: -1%
Price: $1576.82
Shares after: 390,626
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F11

SNDK transaction

Common Stock

Sale

Transaction value: $4,539,306
Shares: -2,876
Change %: -0.74%
Price: $1578.34
Shares after: 387,750
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F12

SNDK transaction

Common Stock

Sale

Transaction value: $1,010,819
Shares: -640
Change %: -0.17%
Price: $1579.40
Shares after: 387,110
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F13

SNDK transaction

Common Stock

Sale

Transaction value: $2,338,765
Shares: -1,480
Change %: -0.38%
Price: $1580.25
Shares after: 385,630
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F14

SNDK transaction

Common Stock

Sale

Transaction value: $1,710,503
Shares: -1,080
Change %: -0.28%
Price: $1583.80
Shares after: 384,550
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F15

SNDK transaction

Common Stock

Sale

Transaction value: $2,410,490
Shares: -1,520
Change %: -0.4%
Price: $1585.85
Shares after: 383,030
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2, F16

SNDK transaction

Common Stock

Sale

Transaction value: $261,855
Shares: -165
Change %: -0.04%
Price: $1587.00
Shares after: 382,865
Date: 17 Sep 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 16 footnotes

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.