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Insider / Sandisk Corp

Shek Bernard

Chief Legal Officer and Secty at Sandisk Corp

Company
Sandisk Corp
Ticker
SNDK
First filing on record
October 21, 2025
Latest trade on record
October 20, 2026
SEC filings
EDGAR ↗

Shek Bernard, Chief Legal Officer and Secty at Sandisk Corp, has disclosed 28 transactions in SNDK since October 21, 2025: 0 purchases (0 open-market buys) and 27 sales, worth about $15.3M at the reported prices. The latest was filed October 22, 2026, 2 days after the trade; 1 filing was late against the 2-business-day Form 4 deadline.

Last updated October 22, 2026 · Source: SEC EDGAR Form 4 filings

Transactions
28
Open-market buys
0
Sales
27
Avg. disclosure lag
2.2d

Trading in charts

Trade timeline

When does this person trade, how big, and in which direction? Every trade in the last 12 months.

Bought (above the line)Sold (below the line)Other transaction
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep
Oct 25NovDecJan 26FebMarAprMayJunJulAugSep

In the last 12 months Shek Bernard made no purchases and 26 sales worth $15M, plus 1 other transaction. Dot size is the dollar amount.

Portfolio mix

Which stocks does this person trade most? Tile size is dollars traded, all time on record.

SNDK$15.3M
SNDK$15.3M

Shek Bernard has traded 1 stock on record; the largest by dollars is SNDK.

Reporting lag

Does this person report on time? One bar per filing against the Form 4 deadline.

On timeLate
Form 4 deadlineoldest filingnewest

1 of 22 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).

What kind of transactions

Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.

Rows by Form 4 transaction code
CodeMeaningRowsSharesValue
FShares withheld for tax215,219$6.3M
SOpen-market sale65,308$9.0M
AGrant or award11,001—
Rows by year of the trade
YearRowsBoughtSold
202623022 · $15.2M
2025505 · $171K

Transactions

Download SNDK trades (CSV)160 rows · 54 KB · every filer in this ticker, this insider included · all downloads

SecuritySideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
SNDKSell FOctober 20, 2026October 22, 20262d322$1,365$440KForm 4 ↗
SNDKSell SOctober 1, 2026October 2, 20261d600$1,735$1.0M10b5-1 planForm 4 ↗
SNDKSell FSeptember 20, 2026September 21, 20261d118$1,792$211KForm 4 ↗
SNDKOther ASeptember 17, 2026September 21, 20264d1,001——Form 4 ↗
SNDKSell SSeptember 8, 2026September 8, 20260d2,308$1,767$4.1M10b5-1 planForm 4 ↗
SNDKSell FSeptember 3, 2026September 8, 20265d2,271$1,555$3.5Mlate10b5-1 planForm 4 ↗
SNDKSell SSeptember 1, 2026September 2, 20261d600$1,526$915K10b5-1 planForm 4 ↗
SNDKSell FAugust 25, 2026August 27, 20262d212$1,481$314KForm 4 ↗
SNDKSell FAugust 21, 2026August 24, 20263d108$1,596$172KForm 4 ↗
SNDKSell FAugust 20, 2026August 24, 20264d111$1,601$178KForm 4 ↗
SNDKSell SAugust 3, 2026August 4, 20261d600$1,162$697K10b5-1 planForm 4 ↗
SNDKSell SJuly 1, 2026July 2, 20261d600$2,088$1.3M10b5-1 planForm 4 ↗
SNDKSell FJune 20, 2026June 22, 20262d117$2,185$256KForm 4 ↗
SNDKSell SJune 3, 2026June 5, 20262d600$1,736$1.0M10b5-1 planForm 4 ↗
SNDKSell FMay 25, 2026May 27, 20262d211$1,479$312KForm 4 ↗
SNDKSell FMay 21, 2026May 22, 20261d107$1,542$165KForm 4 ↗
SNDKSell FMay 20, 2026May 22, 20262d109$1,393$152KForm 4 ↗
SNDKSell FApril 20, 2026April 21, 20261d41$913$37KForm 4 ↗
SNDKSell FMarch 20, 2026March 24, 20264d117$710$83KForm 4 ↗
SNDKSell FFebruary 25, 2026February 27, 20262d211$632$133KForm 4 ↗
SNDKSell FFebruary 21, 2026February 24, 20263d107$650$70KForm 4 ↗
SNDKSell FFebruary 20, 2026February 24, 20264d117$650$76KForm 4 ↗
SNDKSell FJanuary 20, 2026January 21, 20261d34$453$15KForm 4 ↗
SNDKSell FDecember 20, 2025December 23, 20253d117$238$28KForm 4 ↗
SNDKSell FNovember 25, 2025November 26, 20251d211$221$47KForm 4 ↗
SNDKSell FNovember 21, 2025November 24, 20253d107$200$21KForm 4 ↗
SNDKSell FNovember 20, 2025November 24, 20254d109$196$21KForm 4 ↗
SNDKSell FOctober 20, 2025October 21, 20251d362$148$54KForm 4 ↗

Filings

FiledFormAccessionRowsStatusSource
October 22, 2026Form 40001242648-26-0000471publishedEDGAR ↗
October 2, 2026Form 40001242648-26-0000451publishedEDGAR ↗
September 21, 2026Form 40001242648-26-0000402publishedEDGAR ↗
September 8, 2026Form 40001242648-26-0000272publishedEDGAR ↗
September 2, 2026Form 40001363249-26-0000741publishedEDGAR ↗
August 27, 2026Form 40001363249-26-0000721publishedEDGAR ↗
August 24, 2026Form 40001363249-26-0000632publishedEDGAR ↗
August 4, 2026Form 40001363249-26-0000581publishedEDGAR ↗
July 2, 2026Form 40001363249-26-0000561publishedEDGAR ↗
June 22, 2026Form 40001363249-26-0000541publishedEDGAR ↗
June 5, 2026Form 40001363249-26-0000521publishedEDGAR ↗
May 27, 2026Form 40001363249-26-0000461publishedEDGAR ↗
May 22, 2026Form 40001363249-26-0000392publishedEDGAR ↗
April 21, 2026Form 40001363249-26-0000241publishedEDGAR ↗
March 24, 2026Form 40001363249-26-0000201publishedEDGAR ↗
February 27, 2026Form 40001242648-26-0000161publishedEDGAR ↗
February 24, 2026Form 40001242648-26-0000072publishedEDGAR ↗
January 21, 2026Form 40001363249-26-0000061publishedEDGAR ↗
December 23, 2025Form 40001363249-25-0001351publishedEDGAR ↗
November 26, 2025Form 40001363249-25-0001331publishedEDGAR ↗
November 24, 2025Form 40001363249-25-0001262publishedEDGAR ↗
October 21, 2025Form 40001363249-25-0001061publishedEDGAR ↗

Other insiders at Sandisk Corp

Everyone on file, with contracts and lobbying under the company's name: Sandisk Corp.

Guides for this page

Sources and method

Official sources behind this page
SourceFilingsRowsFirst filedNewest filedRead the originals
SEC EDGAR, Form 42228October 21, 2025October 22, 2026Form 4 list on EDGAR

Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.

Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.

Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.