Sandisk Corp (SNDK)
Data as of , from SEC Form 4 filings.
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About Sandisk Corp (SNDK)
Sandisk is one of the five largest suppliers of NAND flash memory semiconductors globally. Sandisk is vertically integrated, producing substantially all of its flash chips at manufacturing sites across Japan via a joint-venture framework with Kioxia. Sandisk then repackages most of its chips into SSDs for consumer electronics, external storage, or cloud storage. Sandisk was formerly a piece of Western Digital for nine years (after being acquired in 2016) and was spun off as an independent company in 2025.
- MILPITAS, CA
- 11,100
- 2025
- XNAS
SNDK Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 37 | 73,187 | $113.90M |
| Grant or award | 5 | 8,009 | |
| Option exercise | 2 | 552 | |
SNDK insider transactions (Form 4)
2881 Form 4 filings on record, the earliest from Jun 9, 2025, newest first. Filing history page 3 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Miyuki Suzuki - Director | Tax withholding / forfeiture | Common Stock | 2,213 footnote F1 | $265.88 | $588K | |
| Miyuki Suzuki - Director | Grant or award | Common Stock | 979 footnote F2 | $0.00 | - | |
| ||||||
 Ellyn Shook - Director | Grant or award | Common Stock | 979 footnote F1 | $0.00 | - | |
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| Devinder Kumar - Director | Grant or award | Common Stock | 979 footnote F1 | $0.00 | - | |
| ||||||
| Thomas Caulfield - Director | Grant or award | Common Stock | 979 footnote F1 | $0.00 | - | |
| ||||||
| Necip Sayiner - Director | Grant or award | Common Stock | 979 footnote F1 | $0.00 | - | |
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| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 362 footnote F1 | $148.04 | $54K | |
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| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 117 | $102.21 | $12K | |
| Bernard Shek - Officer | Grant or award | Common Stock | 18,313 | $0.00 | - | |
| Michael Pokorny - Officer | Grant or award | Common Stock | 13,028 | $0.00 | - | |
| Alper Ilkbahar - Officer | Grant or award | Common Stock | 26,161 | $0.00 | - | |
| Luis Felipe Visoso - Officer | Grant or award | Common Stock | 47,090 | $0.00 | - | |
| David Goeckeler - Officer | Grant or award | Common Stock | 85,025 | $0.00 | - | |
| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 211 | $46.78 | $10K | |
| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 78 | $48.44 | $4K | |
| Alper Ilkbahar - Officer | Tax withholding / forfeiture | Common Stock | 653 | $46.78 | $31K | |
| David Goeckeler - Officer | Tax withholding / forfeiture | Common Stock | 1,569 | $46.78 | $73K | |
| David Goeckeler - Officer | Tax withholding / forfeiture | Common Stock | 980 | $48.44 | $47K | |
| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 110 | $44.40 | $5K | |
| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 428 | $45.50 | $19K | |
| Alper Ilkbahar - Officer | Tax withholding / forfeiture | Common Stock | 1,095 | $44.40 | $49K | |
| Alper Ilkbahar - Officer | Tax withholding / forfeiture | Common Stock | 1,278 | $45.50 | $58K | |
| Luis Felipe Visoso - Officer | Tax withholding / forfeiture | Common Stock | 25,654 | $44.40 | $1.14M | |
| Luis Felipe Visoso - Officer | Tax withholding / forfeiture | Common Stock | 6,353 | $45.50 | $289K | |
| David Goeckeler - Officer | Tax withholding / forfeiture | Common Stock | 34,995 | $44.40 | $1.55M | |
| David Goeckeler - Officer | Tax withholding / forfeiture | Common Stock | 4,129 | $45.50 | $188K | |
| Bernard Shek - Officer | Tax withholding / forfeiture | Common Stock | 29 | $42.19 | $1K | |
| WESTERN DIGITAL CORP - 10% Owner | Other | Common Stock | 21,314,768 | - | - | |
Recent SNDK Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| DAVID GOECKELER | Director, Officer | 33,841 | $51.44M | View on EDGAR | |
| LUIS VISOSO | Officer | 3,000 |
Stock trades in SNDK disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 Josh GottheimerDemocrat, NJ-05 | Purchase |
SNDK insider trading FAQ
What is the latest insider trade for SNDK?
Sandisk Corp (SNDK) had 22 insider filings in the last 90 days, with the most recent on 2026-10-03. The full record for SNDK runs to 81 Form 4 filings, the earliest from 2025-06-09. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying SNDK stock?
No insider purchases of SNDK were filed in the last 90 days.
How many insiders are selling SNDK stock?
37 insider sales of SNDK were filed in the last 90 days, totaling $113.90M.
Where can I see SNDK SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects SNDK Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Bernard Shek view on EDGAR
- - Michael Pokorny view on EDGAR
- - Luis Felipe Visoso view on EDGAR
- - David Goeckeler view on EDGAR
- - Bernard Shek view on EDGAR
- - Alper Ilkbahar view on EDGAR
- - Luis Felipe Visoso view on EDGAR
- - David Goeckeler view on EDGAR
- - Alper Ilkbahar view on EDGAR
Related companies with recent insider activity
Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where SNDK's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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