As of July 01, 2026, the three largest insider holders of SNDK are Digital Corp Western (TenPercentOwner, 7.51Mn shares), David Goeckeler (Chairman Ceo, 513.80K shares), Luis Felipe Visoso (Evp And Cfo, 166.65K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Digital Corp Western | - | 7,513,019 | 0 | 09 Jun, 2025 |
| Matthew E Massengill | - | 4,840 | 0 | 04 Mar, 2025 |
| Kimberly Alexy | - | 0 | 8,574 | 25 Feb, 2025 |
| Necip Sayiner | - | 3,479 | 0 | 04 Dec, 2025 |
| Thomas Caulfield | - | 2,312 | 14,500 | 05 Mar, 2026 |
| Devinder Kumar | - | 4,769 | 0 | 19 Nov, 2025 |
| Ellyn Shook | - | 4,750 | 0 | 19 Nov, 2025 |
| Alexander R. Bradley | - | 863 | 0 | 02 Jan, 2026 |
| David Goeckeler | Chairman Ceo | 513,803 | 0 | 27 Feb, 2026 |
| Luis Felipe Visoso | Evp And Cfo | 166,646 | 0 | 24 Feb, 2026 |
| Miyuki Suzuki | - | 9,907 | 0 | 26 Feb, 2026 |
| Richard B. Ii Cassidy | - | 4,914 | 0 | 19 Nov, 2025 |
| Michael Pokorny | Vp, Chief Accounting Officer | 26,250 | 0 | 24 Nov, 2025 |
| Alper Ilkbahar | Evp, Chief Technology Officer | 55,811 | 0 | 21 Apr, 2026 |
| Bernard Shek | Chief Legal Officer Secty | 33,259 | 0 | 21 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 20 Apr, 2026 | Alper Ilkbahar | Common Stock | D | 2,251 | $913.02 | 55,811 | D | F |
| 20 Apr, 2026 | Bernard Shek | Common Stock | D | 41 | $913.02 | 33,259 | D | F |
| 20 Mar, 2026 | Bernard Shek | Common Stock | D | 117 | $709.71 | 33,300 | D | F |
| 03 Mar, 2026 | Thomas Caulfield | Common Stock | D | 14,500 | $0.00 | 2,312 | D | G |
| 03 Mar, 2026 | Thomas Caulfield | Common Stock | A | 14,500 | $0.00 | 14,500 | I | G |
| 25 Feb, 2026 | Alper Ilkbahar | Common Stock | D | 566 | $632.38 | 58,062 | D | F |
| 25 Feb, 2026 | Bernard Shek | Common Stock | D | 211 | $632.38 | 33,417 | D | F |
| 25 Feb, 2026 | David Goeckeler | Common Stock | D | 1,569 | $632.38 | 513,803 | D | F |
| 25 Feb, 2026 | Miyuki Suzuki | Common Stock | D | 3,500 | $627.53 | 9,907 | D | S |
| 20 Feb, 2026 | David Goeckeler | Common Stock | D | 1,300 | $649.97 | 516,404 | D | F |
| 21 Feb, 2026 | Luis Felipe Visoso | Common Stock | D | 1,594 | $649.97 | 166,646 | D | F |
| 21 Feb, 2026 | Luis Felipe Visoso | Common Stock | D | 1,594 | $649.97 | 166,646 | D | F |
| 20 Feb, 2026 | Bernard Shek | Common Stock | D | 117 | $649.97 | 33,735 | D | F |
| 21 Feb, 2026 | Luis Felipe Visoso | Common Stock | D | 1,594 | $649.97 | 166,646 | D | F |
| 21 Feb, 2026 | Luis Felipe Visoso | Common Stock | D | 1,594 | $649.97 | 166,646 | D | F |
| 20 Feb, 2026 | Alper Ilkbahar | Common Stock | D | 122 | $649.97 | 58,851 | D | F |
| 21 Feb, 2026 | David Goeckeler | Common Stock | D | 1,032 | $649.97 | 515,372 | D | F |
| 21 Feb, 2026 | Alper Ilkbahar | Common Stock | D | 223 | $649.97 | 58,628 | D | F |
| 21 Feb, 2026 | Bernard Shek | Common Stock | D | 107 | $649.97 | 33,628 | D | F |
| 20 Jan, 2026 | Bernard Shek | Common Stock | D | 34 | $453.12 | 33,852 | D | F |