Christopher Vanderhook, Chief Operating Officer at Viant Technology Inc. (DSP), sold 331,490 shares at $9.73 ($3.2M) on 2025-09-15, disclosed to the SEC on 2025-09-17.
Open-market sale of $3.2M DSP by Chief Operating Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $9.73 | 8,782 | $85K | 2.7% |
| 2 | $9.73 | 8,782 | $85K | 2.7% |
| 3 | $9.56 | 313,926 | $3.0M | 94.6% |
| Total | $9.57 avg | 331,490 | $3.2M | 100% |
| Filing → |
| DSP | SELL | 2026-06-15 | $101K | — | Filing → |
| DSP | SELL | 2026-05-21 | $134K | — | Filing → |
| DSP | SELL | 2026-04-22 | $137K | — | Filing → |