DSP insider buying and SEC filings, explained
Viant Technology Inc. · CIK 1828791
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$722K
Planned sales (10b5-1)
$8.8M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 13, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 20,711 shares at about $13.14 ($272K), marked as a 10b5-1 plan trade. Holdings down 6% to 322,000 shares. | SEC filing Filed Oct 14, 2026, 8:30 PM ET |
| Sep 16–18, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 31,644 shares between Sep 16 and Sep 18 at about $12.33 ($390K), marked as a 10b5-1 plan trade. Holdings down 8% to 342,711 shares. | SEC filing Filed Sep 18, 2026 |
| Aug 11, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 27,451 shares at about $13.06 ($359K), marked as a 10b5-1 plan trade. Holdings down 6% to 398,371 shares. | SEC filing Filed Aug 13, 2026 |
| Jul 23, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 2,814 shares at about $10.69 ($30K), marked as a 10b5-1 plan trade. Holdings down 1% to 425,822 shares. | SEC filing Filed Jul 27, 2026 |
| Jul 21–23, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 37,500 shares between Jul 21 and Jul 23 at about $11.01 ($413K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Jul 23, 2026 |
| Jul 21–23, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,500 shares indirectly (by entity) between Jul 21 and Jul 23 at about $11.01 ($138K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jul 23, 2026 |
| Jul 21–23, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,500 shares indirectly (by entity) between Jul 21 and Jul 23 at about $11.01 ($138K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jul 23, 2026 |
| Jul 6–8, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 30,519 shares between Jul 6 and Jul 8 at about $12.77 ($390K), marked as a 10b5-1 plan trade. Holdings down 7% to 428,636 shares. | SEC filing Filed Jul 8, 2026 |
| Jun 16–18, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 37,500 shares between Jun 16 and Jun 18 at about $11.10 ($416K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Jun 18, 2026 |
| Jun 16–18, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,500 shares indirectly (by entity) between Jun 16 and Jun 18 at about $11.10 ($139K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jun 18, 2026 |
| Jun 16–18, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,500 shares indirectly (by entity) between Jun 16 and Jun 18 at about $11.10 ($139K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jun 18, 2026 |
| Jun 15, 2026 | Sale | Larry Madden (CFO) sold 25,376 shares at $11.10 ($282K). Holdings down 5% to 459,155 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 15, 2026 |
| Jun 15, 2026 | Sale | Christopher Vanderhook (President / COO and Director) sold 9,125 shares at $11.10 ($101K). Holdings down 3% to 293,880 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 15, 2026 |
| Jun 15, 2026 | Sale | Timothy Vanderhook (CEO and Director) sold 9,125 shares at $11.10 ($101K). Holdings down 4% to 208,880 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 15, 2026 |
| Jun 8–9, 2026 | Sale | Max O. Valdes (Director) sold 6,686 shares between Jun 8 and Jun 9 at about $12.03 ($80K). Holdings down 19% to 29,449 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 10, 2026 |
| Jun 5–8, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 33,333 shares between Jun 5 and Jun 8 at about $12.18 ($406K), marked as a 10b5-1 plan trade. Holdings down 6% to 484,531 shares. | SEC filing Filed Jun 8, 2026 |
| May 19–21, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,500 shares indirectly (by entity) between May 19 and May 21 at about $10.75 ($134K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed May 21, 2026 |
| May 19–21, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,500 shares indirectly (by entity) between May 19 and May 21 at about $10.75 ($134K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed May 21, 2026 |
| May 19–21, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 37,500 shares between May 19 and May 21 at about $10.75 ($403K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed May 21, 2026 |
| May 8–11, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 35,835 shares between May 8 and May 11 at about $11.64 ($417K), marked as a 10b5-1 plan trade. Holdings down 6% to 517,864 shares. | SEC filing Filed May 12, 2026 |
| Apr 21–23, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 39,328 shares between Apr 21 and Apr 23 at about $10.61 ($417K), marked as a 10b5-1 plan trade. Holdings down 7% to 553,699 shares. | SEC filing Filed Apr 23, 2026 |
| Apr 20–22, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 37,500 shares between Apr 20 and Apr 22 at about $10.96 ($411K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Apr 22, 2026 |
| Apr 20–22, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,500 shares indirectly (by entity) between Apr 20 and Apr 22 at about $10.96 ($137K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Apr 22, 2026 |
| Apr 20–22, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,500 shares indirectly (by entity) between Apr 20 and Apr 22 at about $10.96 ($137K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Apr 22, 2026 |
| Apr 6, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 7,297 shares at about $11.31 ($83K), marked as a 10b5-1 plan trade. Holdings down 1% to 593,027 shares. | SEC filing Filed Apr 7, 2026 |
| Apr 1–2, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 17,541 shares between Apr 1 and Apr 2 at about $11.08 ($194K), marked as a 10b5-1 plan trade. Holdings down 3% to 600,324 shares. | SEC filing Filed Apr 3, 2026 |
| Mar 17–19, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 38,760 shares between Mar 17 and Mar 19 at about $11.79 ($457K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Mar 19, 2026 |
| Mar 17–19, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,920 shares indirectly (by entity) between Mar 17 and Mar 19 at about $11.79 ($152K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Mar 19, 2026 |
| Mar 17–19, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,920 shares indirectly (by entity) between Mar 17 and Mar 19 at about $11.79 ($152K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Mar 19, 2026 |
| Mar 13, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 1,658 shares at about $13.03 ($22K), marked as a 10b5-1 plan trade. Holdings down <1% to 368,607 shares. | SEC filing Filed Mar 17, 2026 |
| Feb 17–19, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 36,240 shares between Feb 17 and Feb 19 at about $9.21 ($334K), marked as a 10b5-1 plan trade. Holdings down 97% to 1,260 shares. | SEC filing Filed Feb 19, 2026 |
| Feb 17–19, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,080 shares indirectly (by entity) between Feb 17 and Feb 19 at about $9.21 ($111K), marked as a 10b5-1 plan trade. Holdings by entity down 97% to 420 shares. | SEC filing Filed Feb 19, 2026 |
| Feb 17–19, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,080 shares indirectly (by entity) between Feb 17 and Feb 19 at about $9.21 ($111K), marked as a 10b5-1 plan trade. Holdings by entity down 97% to 420 shares. | SEC filing Filed Feb 19, 2026 |
| Jan 22, 2026 | Planned (10b5-1) | Larry Madden (CFO) sold 4,224 shares at about $13.09 ($55K), marked as a 10b5-1 plan trade. Holdings down 1% to 405,554 shares. | SEC filing Filed Jan 26, 2026 |
| Jan 20–22, 2026 | Planned (10b5-1) | Capital V LLC (10% owner) sold 37,500 shares between Jan 20 and Jan 22 at about $12.25 ($459K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Jan 22, 2026 |
| Jan 20–22, 2026 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 12,500 shares indirectly (by entity) between Jan 20 and Jan 22 at about $12.25 ($153K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jan 22, 2026 |
| Jan 20–22, 2026 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 12,500 shares indirectly (by entity) between Jan 20 and Jan 22 at about $12.25 ($153K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Jan 22, 2026 |
| Dec 19, 2025 | Planned (10b5-1) | Capital V LLC (10% owner) sold 7,500 shares at about $11.79 ($88K), marked as a 10b5-1 plan trade. Holdings down 100% to 0 shares. | SEC filing Filed Dec 19, 2025 |
| Dec 19, 2025 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 2,500 shares indirectly (by entity) at about $11.79 ($29K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Dec 19, 2025 |
| Dec 19, 2025 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 2,500 shares indirectly (by entity) at about $11.79 ($29K), marked as a 10b5-1 plan trade. Holdings by entity down 100% to 0 shares. | SEC filing Filed Dec 19, 2025 |
| Dec 17, 2025 | Sale | Larry Madden (CFO) sold 13,477 shares at $11.70 ($158K). Holdings down 3% to 409,778 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 18, 2025 |
| Dec 17–18, 2025 | Planned (10b5-1) | Capital V LLC (10% owner) sold 30,000 shares between Dec 17, 2025 and Dec 18, 2025 at about $11.84 ($355K), marked as a 10b5-1 plan trade. Holdings down 80% to 7,500 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 17–18, 2025 | Planned (10b5-1) | Christopher Vanderhook (President / COO and Director) sold 19,102 shares directly and indirectly (by entity) between Dec 17, 2025 and Dec 18, 2025 at about $11.77 ($225K), marked as a 10b5-1 plan trade. Direct holdings down 3% to 347,182 shares. | SEC filing Filed Dec 18, 2025 |
| Dec 17–18, 2025 | Planned (10b5-1) | Timothy Vanderhook (CEO and Director) sold 19,102 shares directly and indirectly (by entity) between Dec 17, 2025 and Dec 18, 2025 at about $11.77 ($225K), marked as a 10b5-1 plan trade. Direct holdings down 3% to 347,182 shares. | SEC filing Filed Dec 18, 2025 |
37 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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