Form 4 for SNDK Sandisk
Accepted 2026-08-24 17:50:30 ET · period of report 2026-08-20 · accession 0001363249-26-000066 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-08-24 17:50 | 2026-08-20 | SNDK | Ilkbahar Alper | EVP, CTO | M - OptEx | $0.00 | +276 | 50.3K | +0.6% | $0 |
| DM | 2026-08-24 17:50 | 2026-08-20+ | SNDK | Ilkbahar Alper | EVP, CTO | F - Tax | $1,598.71 | -759 | 49.5K | -2% | -$1.21M |
| D | 2026-08-24 17:50 | 2026-08-20 | SNDK | Ilkbahar Alper | EVP, CTO | M - OptEx | $0.00 | -276 | 148.8K | -0.2% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-08-20 | M | A | 276 | $0.00 | 50,259 | D | — | — | (F1) The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. |
| 2 | Common | Common Stock | 2026-08-20 | F | D | 276 | $1,600.62 | 49,983 | D | — | — | (F2) Represents shares withheld to satisfy the reporting person's tax withholding obligation in connection with the transaction described in Footnote (1) and is exempt pursuant to Rule 16b-3(e). |
| 3 | Common | Common Stock | 2026-08-20 | F | D | 163 | $1,600.62 | 49,820 | D | — | — | (F3) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 4 | Common | Common Stock | 2026-08-21 | F | D | 320 | $1,596.08 | 49,500 | D | — | — | (F3) Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e). |
| 5 | Derivative | Performance Shares | 2026-08-20 | M | D | 276 | $0.00 | 148,770 | D | — · — to — | 276 Common Stock | (F1) The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. (F1) The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. (F1) The reported transaction reflects the conversion of performance stock units to shares solely for the purpose of satisfying FICA tax withholding obligations as a result of the Reporting Person's retirement eligibility. The number of shares represents what was necessary to satisfy the FICA tax liability and related taxes attributable to the conversion itself, of which the shares were simultaneously forfeited to pay for the taxes. |