Timothy Vanderhook - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Timothy Vanderhook has filed 5 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $1.15M.
Profile
Timothy Vanderhook is CEO and Chairman at Viant Technology Inc. (DSP). Vanderhook has reported 13 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | CEO and Chairman, Director, 10% Owner |
|---|---|
| Notability | 50/100 |
Board memberships
- Viant Technology Inc.
Reported roles
- CEO and Chairman
Trading Pattern
InsiderAlpha's records for Timothy Vanderhook go back to 2024: 13 primary Form 4 filings, an average of 4.3 per year. 42 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role Timothy Vanderhook has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- CEO and Chairman, Director, 10% Owner at Viant Technology Inc. (DSP) - 11 filings, 2025 to 2026
- CEO and Chairman, Director at Viant Technology Inc. (DSP) - 2 filings, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-24 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 4.3K | $10.47 | $45K |
| 2026-07-24 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 5.0K | $11.03 | $55K |
| 2026-07-24 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 3.2K | $11.70 | $37K |
| 2026-07-24 | DSP | Viant Technology Inc. | D - Derivative transaction [10b5-1] | 12.5K | $0.00 | |
| 2026-07-24 | DSP | Viant Technology Inc. | M - Option exercise [10b5-1] | 12.5K | $0.00 | |
| 2026-06-18 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 2.5K | $10.96 | $27K |
| 2026-06-18 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 5.0K | $11.09 | $55K |
| 2026-06-18 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 5.0K | $11.17 | $56K |
| 2026-06-18 | DSP | Viant Technology Inc. | D - Derivative transaction [10b5-1] | 12.5K | $0.00 | |
| 2026-06-18 | DSP | Viant Technology Inc. | M - Option exercise [10b5-1] | 12.5K | $0.00 | |
| 2026-06-16 | DSP | Viant Technology Inc. | S - Open-market sale | 9.1K | $11.10 | $101K |
| 2026-06-11 | DSP | Viant Technology Inc. | A - Grant or award | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | A - Grant or award | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | A - Grant or award | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | A - Grant or award | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | G - Bona-fide gift | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | G - Bona-fide gift | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | G - Bona-fide gift | 52.1K | $0.00 | |
| 2026-06-11 | DSP | Viant Technology Inc. | G - Bona-fide gift | 52.1K | $0.00 | |
| 2026-05-22 | DSP | Viant Technology Inc. | S - Open-market sale [10b5-1] | 2.5K | $10.79 | $27K |
Companies - Last 90 Days
- Viant Technology Inc. (DSP) - 5 filings, last 2026-07-24
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Timothy Vanderhook has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Capital V LLC - $2.89M of DSP open-market activity in the last 12 months
- Larry Madden - $2.42M of DSP open-market activity in the last 12 months
- Christopher Vanderhook - $1.15M of DSP open-market activity in the last 12 months
- Max O. Valdes - $80K of DSP open-market activity in the last 12 months
More Notable Insiders
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- Viking Cake BR, LLC
Frequently Asked Questions
Who is Timothy Vanderhook?
Timothy Vanderhook is CEO and Chairman at Viant Technology Inc. (DSP). Vanderhook has reported 13 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Timothy Vanderhook submitted recently?
5 primary Form 4 filings in the last 90 days, covering 1 company.
Has Timothy Vanderhook been buying or selling stock?
Recorded transactions: 0 open-market purchases and 23 open-market sales ($1.15M) across all tracked filings.
Where can I see all of Timothy Vanderhook's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
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