Bernard Shek

CIK: 0002060144

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)6 (14.3%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)3 (7.1%)

Compensation grants

Other (G, F, J, C, D, …)33 (78.6%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

SNDK

Sandisk Corp

Officer

Discretionary Trading P&L

Holdings

Transaction History (42 total)

SNDK
Sandisk Corp
Oct 20, 2026
Tax Payment(F)
Direct
322 shares at avg. $1365.38$440K
SNDK
Sandisk Corp
Oct 1, 2026
Sale(S)
Direct
600 shares at avg. $1734.94$1.0M
SNDK
Sandisk Corp
Sep 20, 2026
Tax Payment(F)
Direct
118 shares at avg. $1791.82$211K
SNDK
Sandisk Corp
Sep 17, 2026
Award(A)
Direct
1K shares-
SNDK
Sandisk Corp
Sep 8, 2026
Sale(S)
Direct
2.3K shares at avg. $1767.33$4.1M
SNDK
Sandisk Corp
Sep 3, 2026
Tax Payment(F)
Direct
2.3K shares at avg. $1554.99$3.5M
SNDK
Sandisk Corp
Sep 1, 2026
Sale(S)
Direct
600 shares at avg. $1525.60$915K
SNDK
Sandisk Corp
Aug 25, 2026
Tax Payment(F)
Direct
212 shares at avg. $1480.77$314K
SNDK
Sandisk Corp
Aug 21, 2026
Tax Payment(F)
Direct
108 shares at avg. $1596.08$172K
SNDK
Sandisk Corp
Aug 20, 2026
Tax Payment(F)
Direct
111 shares at avg. $1600.62$178K
SNDK
Sandisk Corp
Aug 3, 2026
Sale(S)
Direct
600 shares at avg. $1162.16$697K
SNDK
Sandisk Corp
Jul 1, 2026
Sale(S)
Direct
600 shares at avg. $2088.00$1.3M
SNDK
Sandisk Corp
Jun 20, 2026
Tax Payment(F)
Direct
117 shares at avg. $2184.75$256K
SNDK
Sandisk Corp
Jun 3, 2026
Sale(S)
Direct
600 shares at avg. $1736.00$1.0M
SNDK
Sandisk Corp
May 25, 2026
Tax Payment(F)
Direct
211 shares at avg. $1478.69$312K
SNDK
Sandisk Corp
May 21, 2026
Tax Payment(F)
Direct
107 shares at avg. $1542.24$165K
SNDK
Sandisk Corp
May 20, 2026
Tax Payment(F)
Direct
109 shares at avg. $1392.56$152K
SNDK
Sandisk Corp
Apr 20, 2026
Tax Payment(F)
Direct
41 shares at avg. $913.02$37K
SNDK
Sandisk Corp
Mar 20, 2026
Tax Payment(F)
Direct
117 shares at avg. $709.71$83K
SNDK
Sandisk Corp
Feb 25, 2026
Tax Payment(F)
Direct
211 shares at avg. $632.38$133K
SNDK
Sandisk Corp
Feb 21, 2026
Tax Payment(F)
Direct
107 shares at avg. $649.97$70K
SNDK
Sandisk Corp
Feb 20, 2026
Tax Payment(F)
Direct
117 shares at avg. $649.97$76K
SNDK
Sandisk Corp
Jan 20, 2026
Tax Payment(F)
Direct
34 shares at avg. $453.12$15K
SNDK
Sandisk Corp
Dec 20, 2025
Tax Payment(F)
Direct
117 shares at avg. $237.61$28K
SNDK
Sandisk Corp
Nov 25, 2025
Tax Payment(F)
Direct
211 shares at avg. $220.50$47K

		Type	Shares	Price		Ownership
Oct 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	322	$1365.38	$439,652	Direct
Oct 1, 2026	SNDK Sandisk Corp	Sale(S)	600	$1734.94	$1,040,964	Direct
Sep 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	118	$1791.82	$211,435	Direct
Sep 17, 2026	SNDK Sandisk Corp	Award(A)	1,001	-	$0	Direct
Sep 8, 2026	SNDK Sandisk Corp	Sale(S)	2,308	$1767.33	$4,078,998	Direct
Sep 3, 2026	SNDK Sandisk Corp	Tax Payment(F)	2,271	$1554.99	$3,531,382	Direct
Sep 1, 2026	SNDK Sandisk Corp	Sale(S)	600	$1525.60	$915,360	Direct
Aug 25, 2026	SNDK Sandisk Corp	Tax Payment(F)	212	$1480.77	$313,923	Direct
Aug 21, 2026	SNDK Sandisk Corp	Tax Payment(F)	108	$1596.08	$172,377	Direct
Aug 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	111	$1600.62	$177,669	Direct
Aug 3, 2026	SNDK Sandisk Corp	Sale(S)	600	$1162.16	$697,296	Direct
Jul 1, 2026	SNDK Sandisk Corp	Sale(S)	600	$2088.00	$1,252,800	Direct
Jun 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	117	$2184.75	$255,616	Direct
Jun 3, 2026	SNDK Sandisk Corp	Sale(S)	600	$1736.00	$1,041,600	Direct
May 25, 2026	SNDK Sandisk Corp	Tax Payment(F)	211	$1478.69	$312,004	Direct
May 21, 2026	SNDK Sandisk Corp	Tax Payment(F)	107	$1542.24	$165,020	Direct
May 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	109	$1392.56	$151,789	Direct
Apr 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	41	$913.02	$37,434	Direct
Mar 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	117	$709.71	$83,036	Direct
Feb 25, 2026	SNDK Sandisk Corp	Tax Payment(F)	211	$632.38	$133,432	Direct
Feb 21, 2026	SNDK Sandisk Corp	Tax Payment(F)	107	$649.97	$69,547	Direct
Feb 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	117	$649.97	$76,046	Direct
Jan 20, 2026	SNDK Sandisk Corp	Tax Payment(F)	34	$453.12	$15,406	Direct
Dec 20, 2025	SNDK Sandisk Corp	Tax Payment(F)	117	$237.61	$27,800	Direct
Nov 25, 2025	SNDK Sandisk Corp	Tax Payment(F)	211	$220.50	$46,526	Direct

1-25 of 42 transactions

About Shek Bernard

Shek Bernard (SEC CIK 0002060144) files insider reports with the SEC as Chief Legal Officer and Secty of Sandisk Corp (SNDK).

Signal8 holds 34 ownership filings by Shek Bernard (1 Form 3, 33 Form 4), filed between Mar 14, 2025 and Oct 22, 2026. Those filings report 42 transactions, from Mar 20, 2025 to Oct 20, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Shek Bernard's filings is in MILPITAS, CA.

Recent filings by Shek Bernard

Oct 20, 2026: Tax withholding of SNDK shares (Form 4, code F).
Oct 1, 2026: Open-market sale of SNDK shares (Form 4, code S).
Sep 20, 2026: Tax withholding of SNDK shares (Form 4, code F).
Sep 17, 2026: Grant or award of SNDK shares (Form 4, code A).
Sep 8, 2026: Open-market sale of SNDK shares (Form 4, code S).

Other insiders filing for Sandisk Corp (SNDK)

Pokorny Michael, VP, Chief Accounting Officer
Visoso Luis Felipe, EVP & CFO
Goeckeler David, Chairman & CEO
Ilkbahar Alper, EVP & Chief Technology Officer
Caulfield Thomas, Director
Sayiner Necip, Director

How to read Form 4 transaction codes