NASDAQ · Holders
Sandisk Corp. (SNDK) Institutional Ownership & Insider Trading History
Top SNDK institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
- Last confirmed price
- $1,417-4.42%
- Oct 14, 2026, 1:19 PM EDT · Prices may be delayed
Data dates
Prices as of Oct 14, 1:19 PM EDT · Fundamentals checked Oct 14, 12:47 PM EDT · Statement period ended Jul 3, 2026
Ownership read
SNDK insider transaction activity: Net selling.
Blackrock Inc. is the largest institutional holder. 15 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
SNDK
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
10.30M
Blackrock Inc.
Insider transaction activity
Net selling
$132.73M sold / $0.0000 bought
Observations shown
59
10 holder / 49 insider
- Holder rows
- 10
- Yahoo Finance · Filing dates shown per row
- Increased / initiated
- 6
- 4 decreased · provider-reported changes
- Insider rows
- 49
- Yahoo Finance · Filing dates shown per row
Ownership concentration and transaction activity
- Top 10 reported holders
- 38.66% outstanding
- Changes with share-count history
- Prior-position data unavailable
- New / exited positions
- 0 / 0 explicitly reported
- Largest increase with share-count history
- Prior share counts unavailable
These changes cover the holders shown. A holder missing from this list may still own shares. Compare positions from the same reporting quarters.
Net shares sold: 88,295
Sale-code S shares minus purchase-code P shares in this sample. Includes disclosed plans and unknown plan status; excludes grants, gifts, exercises and withholding. This is activity, not sentiment.
- Grant: 29
- Purchase / sale; plan unknown: 15
- Other / unclassified: 2
- Gift: 3
Top 10 institutional holders
Sandisk Corp. (SNDK) institutional ownership
Ranked by reported share count, with position changes and separate position and filing dates where ownership data supplies them.
| # | Institution | % held | Shares | Change % | Position / filing date |
|---|---|---|---|---|---|
| 1 | 7.12% | 10.30M | -1.04% | Position as of Jun 30, 2026Filing date unknown | |
| 2 | 6.69% | 9.67M | +1.49% | Position as of Jun 30, 2026Filing date unknown | |
| 3 | 5.44% | 7.86M | -41.29% | Position as of Jun 30, 2026Filing date unknown | |
| 4 | 4.10% | 5.93M | +6.34% | Position as of Jun 30, 2026Filing date unknown | |
| 5 | 3.88% | 5.61M | +381.48% | Position as of Jun 30, 2026Filing date unknown | |
| 6 | 2.73% | 3.94M | +175.84% | Position as of Jun 30, 2026Filing date unknown | |
| 7 | 2.48% | 3.59M | -14.75% | Position as of Jun 30, 2026Filing date unknown | |
| 8 | 2.43% | 3.52M | -1.69% | Position as of Jun 30, 2026Filing date unknown | |
| 9 | Clear Street Group Inc. | 2.06% | 2.98M | +143.63% | Position as of Jun 30, 2026Filing date unknown |
| 10 | Situational Awareness LP | 1.73% | 2.50M | +118.87% | Position as of Jun 30, 2026Filing date unknown |
Recent insider transactions
Sandisk Corp. (SNDK) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
| # | Insider | % company | Action | Shares | Transaction date |
|---|---|---|---|---|---|
| 1 | POKORNY MICHAEL Officer | <0.01% | Stock Award(Grant)Transaction code reported in the data source. Check the original Form 4 filing for details.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 458 | Sep 17, 2026 |
| 2 | GOECKELER DAVID V Chief Executive Officer | <0.01% | Stock Award(Grant)Transaction code reported in the data source. Check the original Form 4 filing for details.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 3.30K | Sep 17, 2026 |
| 3 | VISOSO LOMELIN LUIS FELIPE Chief Financial Officer | <0.01% | Stock Award(Grant)Transaction code reported in the data source. Check the original Form 4 filing for details.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.64K | Sep 17, 2026 |
| 4 | ILKBAHAR ALPER Chief Technology Officer | <0.01% | Stock Award(Grant)Transaction code reported in the data source. Check the original Form 4 filing for details.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.62K | Sep 17, 2026 |
| 5 | SHEK BERNARD Officer | <0.01% | Stock Award(Grant)Transaction code reported in the data source. Check the original Form 4 filing for details.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.00K | Sep 17, 2026 |
| 6 | GOECKELER DAVID V Chief Executive Officer | 0.02% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 33.84K | Sep 17, 2026 |
| 7 | VISOSO LOMELIN LUIS FELIPE Chief Financial Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 1.00K | Sep 15, 2026 |
| 8 | GOECKELER DAVID V Chief Executive Officer | 0.02% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 33.84K | Sep 14, 2026 |
| 9 | SHEK BERNARD Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 2.31K | Sep 8, 2026 |
| 10 | ILKBAHAR ALPER Chief Technology Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 4.71K | Sep 3, 2026 |
| 11 | ILKBAHAR ALPER Chief Technology Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 400 | Sep 3, 2026 |
| 12 | SHEK BERNARD Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4.Transaction context
Position sold = shares sold ÷ (shares sold + holdings after). Separate accounts or security classes may not represent total beneficial ownership. | 600 | Sep 1, 2026 |
Frequently asked
Questions about this quote
Who are the largest SNDK shareholders?
Blackrock Inc. is the largest reported institutional holder of SNDK, with 10.30 million shares, or about 7.12% of shares outstanding.
What does the institutional filing activity show for SNDK?
Sandisk Corp. has 10 institutional rows on file: 6 increased or initiated positions and 4 reduced them.
What insider transactions are available for SNDK?
TECHi shows 49 dated SNDK insider transactions through Sep 17, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.
Are SNDK insiders buying or selling?
The displayed SNDK activity reads Net selling: 15 sales and 0 purchases. Other transaction types remain separate.
Who is the most active reported SNDK insider?
WESTERN DIGITAL CORPORATION has the largest absolute share movement in the displayed SNDK filing rows, totaling 29.86 million shares. The action labels provide the transaction context.
All data sources
Search the dated figures used for this view. Each entry identifies its units, reporting period and calculation status.
What this page answers
Check who owns the float and whether insiders are active.
Explore Institutional concentration, insider transaction pattern, and float context.
Keep in mind Filings are delayed or transactions are administrative rather than economic.
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Next open: 2026-10-15 · 9:30 AM America/New_York
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