SEC Form 4
Sandisk Corporation (SNDK) insider trading
In the 12 months to Oct 24, 2026, 6 SNDK insiders reported open-market sales of $131.6M across 15 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $131.6M
- 15 filings · 6 insiders
- Open-market purchases
- $0
- 0 filings
- Pre-arranged sales (10b5-1)
- 11 of 15
- $123.5M of $131.6M sold (94%)
Who traded SNDK, and when
- Sale
- Sale, pre-arranged (10b5-1)
SNDK daily close from Oct 24, 2025 to Oct 23, 2026, between $175.53 and $2,335.00, last $1,238.03. 15 sale and 0 purchase filings by 6 insiders, marked at their filing dates. David Goeckeler, Chairman & CEO: sold $105.0M across 2 filings, first filed Sep 16, 2026, last Sep 21, 2026. Alper Ilkbahar, EVP, Chief Technology Officer → EVP & Chief Technology Officer: sold $11.4M across 3 filings, first filed Jun 2, 2026, last Sep 8, 2026. Bernard Shek, Chief Legal Officer & Secty → Chief Legal Officer and Secty: sold $9.0M across 6 filings, first filed Jun 5, 2026, last Oct 2, 2026. Michael Pokorny, VP, Chief Accounting Officer: sold $3.5M across 1 filing, first filed May 14, 2026, last May 14, 2026. Luis Felipe Visoso, EVP & CFO: sold $1.6M across 1 filing, first filed Sep 16, 2026, last Sep 16, 2026. Necip Sayiner, Director: sold $1.1M across 2 filings, first filed Dec 4, 2025, last May 11, 2026.
Largest mark · tap a row for others
David Goeckeler · Chairman & CEO
Filing 1 of 2 within a week · $104,972,834 total
Sale $51,700,130
33,838 shares at $1,527.87 avg
Filed Sep 16, 2026 · traded Sep 14
Pre-arranged (10b5-1) · close on filing date $1,519.97
David Goeckeler · Chairman & CEO
Chairman & CEO
$105.0M soldAlper Ilkbahar · EVP, Chief Technology Officer → EVP & Chief Technology Officer
EVP, Chief Technology Officer → EVP & Chief Technology Officer
$11.4M soldBernard Shek · Chief Legal Officer & Secty → Chief Legal Officer and Secty
Chief Legal Officer & Secty → Chief Legal Officer and Secty
$9.0M soldMichael Pokorny · VP, Chief Accounting Officer
VP, Chief Accounting Officer
$3.5M soldLuis Felipe Visoso · EVP & CFO
EVP & CFO
$1.6M soldNecip Sayiner · Director
Director
$1.1M soldHas the Sandisk Corporation's CEO sold stock?
Yes. David Goeckeler (CEO) sold 67,679 shares ($105.0M) in Sep 2026, all under a pre-arranged 10b5-1 plan.
Open-market trades
15 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| David Goeckeler | Chairman & CEO | $105.0M | — | 2 | 100% of sales | |
| Alper Ilkbahar | EVP, Chief Technology Officer → EVP & Chief Technology Officer | $11.4M | — | 3 | 69% of sales | |
| Bernard Shek | Chief Legal Officer & Secty → Chief Legal Officer and Secty | $9.0M | — | 6 | 100% of sales | |
| Michael Pokorny | VP, Chief Accounting Officer | $3.5M | — | 1 | — | |
| Luis Felipe Visoso | EVP & CFO | $1.6M | — | 1 | 100% of sales | |
| Necip Sayiner | Director | $1.1M | — | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Bernard Shek Chief Legal Officer and Secty | SalePre-arranged (10b5-1) | 600 | $1,734.94 | $1.0M | 25,588 | |
traded | David Goeckeler Chairman & CEO | SalePre-arranged (10b5-1) | 33,841 | $1,574.21 | $53.3M | 407,062 | |
traded | David Goeckeler Chairman & CEO | SalePre-arranged (10b5-1) | 33,838 | $1,527.87 | $51.7M | 423,268 | |
traded | Luis Felipe Visoso EVP & CFO | SalePre-arranged (10b5-1) | 1,000 | $1,568.83 | $1.6M | 130,976 | |
traded | Bernard Shek Chief Legal Officer & Secty | SalePre-arranged (10b5-1) | 2,308 | $1,767.33 | $4.1M | 25,305 | |
traded | Alper Ilkbahar EVP & Chief Technology Officer | SalePre-arranged (10b5-1) | 4,712 | $1,540.58 | $7.3M | 44,732 | |
traded | Alper Ilkbahar EVP & Chief Technology Officer | SalePre-arranged (10b5-1) | 400 | $1,563.89 | $625.6K | 43,774 | |
traded | Bernard Shek Chief Legal Officer & Secty | SalePre-arranged (10b5-1) | 600 | $1,525.60 | $915.4K | 29,884 | |
traded | Bernard Shek Chief Legal Officer & Secty | SalePre-arranged (10b5-1) | 600 | $1,162.16 | $697.3K | 30,915 | |
traded | Bernard Shek Chief Legal Officer & Secty | SalePre-arranged (10b5-1) | 600 | $2,088.00 | $1.3M | 31,515 | |
traded | Bernard Shek Chief Legal Officer & Secty | SalePre-arranged (10b5-1) | 600 | $1,736.00 | $1.0M | 32,232 | |
traded | Alper Ilkbahar EVP, Chief Technology Officer | Sale | 2,000 | $1,756.58 | $3.5M | 53,277 | |
traded | Michael Pokorny VP, Chief Accounting Officer | Sale | 2,446 | $1,426.18 | $3.5M | 22,375 | |
traded | Necip Sayiner Director | Sale | 579 | $1,503.11 | $870.3K | 2,900 | |
traded | Necip Sayiner Director | Sale | 1,271 | $195.14 | $248.0K | 3,479 |
GET /stocks/filings/vX/form-4?tickers=SNDK&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SNDK",
"SNDKV"
],
"issuer_cik": "0002023554",
"owner_cik": "0002060144",
"accession_number": "0001242648-26-000045",
"form_type": "4",
"filing_date": "2026-10-02",
"period_of_report": "2026-10-01",
"issuer_name": "Sandisk Corp",
"issuer_trading_symbol": "SNDK",
"owner_name": "Shek Bernard",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Legal Officer and Secty",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-10-01",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 600,
"transaction_price_per_share": 1734.94,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 25588,
"transaction_value": 1040964,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 4, 2026."
}
]
},
{
"tickers": [
"SNDK",
"SNDKV"
],
"issuer_cik": "0002023554",
"owner_cik": "0001713941",
"accession_number": "0001242648-26-000041",
"form_type": "4",
"filing_date": "2026-09-21",
"period_of_report": "2026-09-17",
"issuer_name": "Sandisk Corp",
"issuer_trading_symbol": "SNDK",
"owner_name": "Goeckeler David",
"is_director": true,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chairman & CEO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": true,
"transaction_date": "2026-09-17",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 910,
"transaction_price_per_share": 1570.0407,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 406152,
"transaction_value": 1428737.037,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F2",
"description": "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."
},
{
"id": "F5",
"description": "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."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 76 records
- Option exercises1 record
- Tax withholding58 records
- Tax withholding (sold to cover)1 record
- Grants and awards12 records
- Gifts4 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SNDK every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Role
- The title on each filing. Someone whose title changed shows more than one.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.