Vanderhook Christopher (CIK 1843104) reported 57 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-23). Recent activity: Buy DSP (12,500 shares), Sell DSP (12,500 shares), Sell DSP (3,196 shares), Sell DSP (5,000 shares), Sell DSP (4,304 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-23 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 12,500 | $0 |
| 2026-07-23 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 12,500 | $0 |
| 2026-07-23 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 3,196 | $37,407 |
| 2026-07-23 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 5,000 | $55,173 |
| 2026-07-23 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 4,304 | $45,065 |
| 2026-06-18 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 12,500 | $0 |
| 2026-06-18 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 12,500 | $0 |
| 2026-06-18 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 5,000 | $55,857 |
| 2026-06-18 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 5,000 | $55,442 |
| 2026-06-18 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 2,500 | $27,412 |
| 2026-06-15 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 9,125 | $101,288 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 52,096 | $0 |
| 2026-06-10 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 52,096 | $0 |
| 2026-05-21 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 12,500 | $0 |
| 2026-05-21 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 12,500 | $0 |
| 2026-05-21 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 5,000 | $54,436 |
| 2026-05-21 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 5,000 | $52,978 |
| 2026-05-21 | Viant Technology Inc. (DSP) | Chief Operating Officer | Sell | 2,500 | $26,971 |
| 2026-04-22 | Viant Technology Inc. (DSP) | Chief Operating Officer | Buy | 12,500 | $0 |
Source: SEC Form 4 filings · as of 2026-07-23