DSP (Viant Technology Inc. Class A Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by DSP officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-08-12 | Craig Justin Abrahams | Director | A | — | — |
| 2026-07-27 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-07-23 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-07-23 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-07-23 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-07-08 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-06-18 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-06-18 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-06-18 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-06-15 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-06-15 | Timothy Vanderhook | CEO and Chairman | Sell | — | — |
| 2026-06-15 | Christopher Vanderhook | Chief Operating Officer | Sell | — | — |
| 2026-06-10 | Brett Wilson | Director | A | — | — |
| 2026-06-10 | Vivian Yang | Director | A | — | — |
| 2026-06-10 | MAX O VALDES | Director | Sell | — | — |
| 2026-06-10 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-06-10 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-06-08 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-06-05 | MAX O VALDES | Director | A | — | — |
| 2026-06-05 | Brett Wilson | Director | A | — | — |
| 2026-06-05 | Vivian Yang | Director | A | — | — |
| 2026-05-21 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-05-21 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-05-21 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-05-12 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-04-23 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-04-22 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-04-22 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-04-22 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-04-07 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-04-03 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-03-19 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-03-19 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-03-19 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-03-17 | LARRY MADDEN | Chief Financial Officer | MIXED | — | — |
| 2026-03-12 | LARRY MADDEN | Chief Financial Officer | F | — | — |
| 2026-03-12 | Christopher Vanderhook | Chief Operating Officer | D | — | — |
| 2026-03-12 | Timothy Vanderhook | CEO and Chairman | D | — | — |
| 2026-02-19 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2026-02-19 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-02-19 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-01-26 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| 2026-01-22 | Capital V LLC | 10%+ Owner | MIXED | — | — |
| 2026-01-22 | Timothy Vanderhook | CEO and Chairman | MIXED | — | — |
| 2026-01-22 | Christopher Vanderhook | Chief Operating Officer | MIXED | — | — |
| 2025-12-19 | Capital V LLC | 10%+ Owner | Sell | — | — |
| 2025-12-19 | Christopher Vanderhook | Chief Operating Officer | Sell | — | — |
| 2025-12-19 | Timothy Vanderhook | CEO and Chairman | Sell | — | — |
| 2025-12-18 | LARRY MADDEN | Chief Financial Officer | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | CEO and Chairman | 9,278,655 | — |
| — | Chief Financial Officer | 874,158 | — |
| — | Chief Operating Officer | 293,880 | — |
| — | Director | 108,457 | — |
| — | Director | 87,137 | — |
| — | Director | 50,463 | — |
| — | Director | 32,835 | — |
| — | Director | 28,389 | — |
| — | 10%+ Owner | 12,912 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the DSP quote page; the site-wide leaderboard is on the insider transactions hub.