SNDK insider buying and SEC filings, explained
Sandisk Corp · CIK 2023554
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$10.3M
Planned sales (10b5-1)
$123.5M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 1, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer and Secty) sold 600 shares at $1,734.94 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 2% to 25,588 shares. | SEC filing Filed Oct 2, 2026, 8:02 PM ET |
| Sep 17, 2026 | Planned (10b5-1) | David Goeckeler (CEO and Director) sold 33,841 shares at about $1,574.21 ($53.3M), marked as a 10b5-1 plan trade. Holdings down 8% to 382,865 shares. | SEC filing Filed Sep 21, 2026 |
| Sep 15, 2026 | Planned (10b5-1) | Luis Felipe Visoso (CFO) sold 1,000 shares at $1,568.83 ($1.6M), marked as a 10b5-1 plan trade. Holdings down 1% to 130,976 shares. | SEC filing Filed Sep 16, 2026 |
| Sep 14, 2026 | Planned (10b5-1) | David Goeckeler (CEO and Director) sold 33,838 shares at about $1,527.87 ($51.7M), marked as a 10b5-1 plan trade. Holdings down 8% to 413,410 shares. | SEC filing Filed Sep 16, 2026 |
| Sep 3, 2026 | Planned (10b5-1) | Alper Ilkbahar (EVP & Chief Technology Officer) sold 400 shares at about $1,563.89 ($626K), marked as a 10b5-1 plan trade. Holdings down 1% to 43,734 shares. | SEC filing Filed Sep 8, 2026 |
| Sep 3, 2026 | Planned (10b5-1) | Alper Ilkbahar (EVP & Chief Technology Officer) sold 4,712 shares at about $1,540.57 ($7.3M), marked as a 10b5-1 plan trade. Holdings down 10% to 44,134 shares. | SEC filing Filed Sep 8, 2026 |
| Sep 8, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer & Secty) sold 2,308 shares at $1,767.33 ($4.1M), marked as a 10b5-1 plan trade. Holdings down 8% to 25,305 shares. | SEC filing Filed Sep 8, 2026 |
| Sep 1, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer & Secty) sold 600 shares at $1,525.60 ($915K), marked as a 10b5-1 plan trade. Holdings down 2% to 29,884 shares. | SEC filing Filed Sep 2, 2026 |
| Aug 3, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer & Secty) sold 600 shares at $1,162.16 ($697K), marked as a 10b5-1 plan trade. Holdings down 2% to 30,915 shares. | SEC filing Filed Aug 4, 2026 |
| Jul 1, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer & Secty) sold 600 shares at $2,088.00 ($1.3M), marked as a 10b5-1 plan trade. Holdings down 2% to 31,515 shares. | SEC filing Filed Jul 2, 2026 |
| Jun 3, 2026 | Planned (10b5-1) | Bernard Shek (Chief Legal Officer & Secty) sold 600 shares at $1,736.00 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 2% to 32,232 shares. | SEC filing Filed Jun 5, 2026 |
| Jun 1, 2026 | Sale | Alper Ilkbahar (EVP, Chief Technology Officer) sold 2,000 shares at about $1,756.58 ($3.5M). Holdings down 4% to 52,677 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| May 12, 2026 | Sale | Michael Pokorny (VP, Chief Accounting Officer) sold 2,446 shares at $1,426.18 ($3.5M). Holdings down 10% to 22,375 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 8, 2026 | Sale | Necip Sayiner (Director) sold 579 shares at $1,503.11 ($870K). Holdings down 17% to 2,900 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 11, 2026 |
| Feb 25, 2026 | Sale | Miyuki Suzuki (Director) sold 3,500 shares at about $627.53 ($2.2M). Holdings down 26% to 9,907 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 26, 2026 |
| Dec 3, 2025 | Sale | Necip Sayiner (Director) sold 1,271 shares at $195.14 ($248K). Holdings down 27% to 3,479 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 4, 2025 |
57 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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