Nasdaq · CIK 0001828791
DSP Viant Technology Inc.
Insider trading from SEC Form 4. Last filing 25 d ago. Close $13.13 on Oct 9, 2026, +61% from the 52-week low and -7% from the high.
Viant Technology Inc. (DSP) has 50 SEC Form 4 filings on file from 5 insiders, the latest filed on Sep 18, 2026. In the last 90 days insiders made 0 open-market buys worth $0 and 1 open-market sell worth $390k, net -$390k.
34 open-market trades have been scored at DSP. The newest: Larry Madden (Chief Financial Officer) sold $390k of stock on Sep 16, 2026, filed Sep 18, 2026, scored 18 (weak), under a 10b5-1 plan. The largest of the 34 shown: Larry Madden (Chief Financial Officer) sold $2.1M on Nov 14, 2024, scored 37 (weak), under a 10b5-1 plan. 4 insiders sold within 14 days of each other around Mar 17, 2026.
DSP closed at $13.13 on Oct 9, 2026, 61% above its 52-week low and 7% below its 52-week high.
8 Form 144 notices of planned sales are on file, the latest filed Sep 11, 2025.
Last 90 days
Net insider value
-$390k
more sold than bought
Buys
0
$0 by 0 insiders
Sells
1
$390k by 1 insider
Insiders on file
5
with a Form 4 at this company
Price and insider trades, last year
DSPOct 9, 2026 · close 13.13
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at Viant Technology Inc., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 18Weak | Larry Madden Chief Financial Officer sell | $390k 31,644 shares | -8% | - | |
| 13Weak | Capital V LLC owner sell | $416k 37,500 shares | -100% | +40% from low-23% from high | |
| 13Weak | Capital V LLC owner sell | $403k 37,500 shares | -100% | +34% from low-27% from high | |
| 13Weak | Capital V LLC owner sell | $411k 37,500 shares | -100% | +38% from low-30% from high | |
| 29Weak | Capital V LLC owner sell | $457k 38,760 shares | -100% | +44% from low-27% from high | |
| 31Weak | Christopher Vanderhook Chief Operating Officer sell | $152k 12,920 shares | -100% | +44% from low-27% from high | |
| 36Weak | Timothy Vanderhook CEO and Chairman sell | $152k 12,920 shares | -100% | +44% from low-27% from high | |
| 17Weak | Larry Madden Chief Financial Officer sell | $22k 1,658 shares | -0% | +51% from low-23% from high | |
| 27Weak | Capital V LLC owner sell | $334k 36,240 shares | -97% | +13% from low-61% from high | |
| 30Weak | Christopher Vanderhook Chief Operating Officer sell | $111k 12,080 shares | -97% | +13% from low-61% from high | |
| 35Weak | Timothy Vanderhook CEO and Chairman sell | $111k 12,080 shares | -97% | +13% from low-61% from high | |
| 24Weak | Larry Madden Chief Financial Officer sell | $55k 4,224 shares | -1% | +57% from low-51% from high | |
| 29Weak | Capital V LLC owner sell | $459k 37,500 shares | -100% | +45% from low-54% from high | |
| 31Weak | Christopher Vanderhook Chief Operating Officer sell | $153k 12,500 shares | -100% | +45% from low-54% from high | |
| 36Weak | Timothy Vanderhook CEO and Chairman sell | $153k 12,500 shares | -100% | +45% from low-54% from high | |
| 36Weak | Capital V LLC owner sell | $88k 7,500 shares | -100% | +44% from low-55% from high | |
| 40Moderate | Christopher Vanderhook Chief Operating Officer sell | $29k 2,500 shares | -100% | +44% from low-55% from high | |
| 45Moderate | Timothy Vanderhook CEO and Chairman sell | $29k 2,500 shares | -100% | +44% from low-55% from high | |
| 27Weak | Capital V LLC owner sell | $355k 30,000 shares | -80% | +42% from low-56% from high | |
| 48Moderate | Larry Madden Chief Financial Officer sell | $158k 13,477 shares | -3% | +42% from low-56% from high | |
| 12Weak | Christopher Vanderhook Chief Operating Officer sell | $225k 19,102 shares | -5% | +42% from low-56% from high | |
| 17Weak | Timothy Vanderhook CEO and Chairman sell | $225k 19,102 shares | -5% | +42% from low-56% from high | |
| 48Moderate | Larry Madden Chief Financial Officer sell | $127k 13,006 shares | -3% | +0% from low-64% from high | |
| 29Weak | Christopher Vanderhook Chief Operating Officer sell | $85k 8,782 shares | -2% | +0% from low-64% from high | |
| 34Weak | Timothy Vanderhook CEO and Chairman sell | $85k 8,782 shares | -2% | +0% from low-64% from high | |
| 48Moderate | Larry Madden Chief Financial Officer sell | $173k 13,265 shares | -3% | +23% from low-51% from high | |
| 45Moderate | Christopher Vanderhook Chief Operating Officer sell | $117k 8,960 shares | -2% | +23% from low-51% from high | |
| 50Moderate | Timothy Vanderhook CEO and Chairman sell | $117k 8,960 shares | -2% | +23% from low-51% from high | |
| 51Moderate | Max O Valdes director sell | $139k 9,900 shares | -31% | +34% from low-47% from high | |
| 39Weak | Max O Valdes director sell | $154k 7,500 shares | -11% | - | |
| 24Weak | Larry Madden Chief Financial Officer sell | $279k 14,284 shares | -4% | - | |
| 37Weak | Larry Madden Chief Financial Officer sell | $2.1M 135,716 shares | -26% | - | |
| 2Weak | Larry Madden Chief Financial Officer sell | $17k 1,498 shares | -0% | - | |
| 10Weak | Larry Madden Chief Financial Officer sell | $65k 5,810 shares | -1% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Sep 11, 2025 | Lawrence Madden Officer | 14,067 0.09% of outstanding | $145k | Sep 11, 2025 | $173k |
| Jun 11, 2025 | Lawrence Madden Officer | 14,062 0.09% of outstanding | $199k | Jun 11, 2025 | none |
| Jun 11, 2025 | Christopher Vanderhook Officer, Director | 9,500 0.06% of outstanding | $135k | Jun 11, 2025 | none |
| Jun 11, 2025 | Timothy Vanderhook Officer, Director | 9,500 0.06% of outstanding | $135k | Jun 11, 2025 | none |
| Jun 6, 2025 | MAX O VALDES Director | 4,838 0.01% of outstanding | $69k | Jun 6, 2025 | $70k |
| Jun 5, 2025 | MAX O VALDES Director | 5,062 0.01% of outstanding | $70k | Jun 5, 2025 | none |
| Dec 6, 2024 | VALDES MAX O Director | 7,500 0.05% of outstanding | $154k | Dec 6, 2024 | none |
| Nov 14, 2024 | Lawrence Madden Officer | 171,426 1.07% of outstanding | $2.6M | Nov 14, 2024 | $239k |
Transactions
The newest 50 of 156 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | Larry Madden Chief Financial Officer | SOpen-market sale Class A Common Stock10b5-1 | -17,042 | $12.52 | $213k | 357,313 | 25 d ago |
| Sep 18, 2026 | Larry Madden Chief Financial Officer | SOpen-market sale Class A Common Stock10b5-1 | -14,602 | $12.10 | $177k | 342,711 | 25 d ago |
| Sep 10, 2026 | Larry Madden Chief Financial Officer | FTax withholding Class A Common Stock | -24,016 | $12.74 | $306k | 374,355 | 29 d ago |
| Sep 10, 2026 | Christopher Vanderhook Chief Operating Officer | DDisposition to issuer Class A Common Stock | -8,636 | $12.74 | $110k | 285,244 | 29 d ago |
| Sep 10, 2026 | Timothy Vanderhook CEO and Chairman | DDisposition to issuer Class A Common Stock | -8,636 | $12.74 | $110k | 200,244 | 29 d ago |
| Jun 16, 2026 | Capital V LLC owner | MOption exercise Class A Common Stock10b5-1 | +37,500 | $0.00 | $0 | 37,500 | Jun 18, 2026 |
| Jun 16, 2026 | Capital V LLC owner | DDisposition to issuer Class B Common Stock10b5-1 | -37,500 | $0.00 | $0 | 27,246,826 | Jun 18, 2026 |
| Jun 16, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $11.17 | $168k | 22,500 | Jun 18, 2026 |
| Jun 17, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $11.09 | $166k | 7,500 | Jun 18, 2026 |
| Jun 18, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -7,500 | $10.96 | $82k | 0 | Jun 18, 2026 |
| Jun 16, 2026 | Capital V LLC owner | MOption exercise Class B Unitsderivative10b5-1 | -37,500 | $0.00 | $0 | 27,246,826 | Jun 18, 2026 |
| May 19, 2026 | Capital V LLC owner | MOption exercise Class A Common Stock10b5-1 | +37,500 | $0.00 | $0 | 37,500 | May 21, 2026 |
| May 19, 2026 | Capital V LLC owner | DDisposition to issuer Class B Common Stock10b5-1 | -37,500 | $0.00 | $0 | 27,284,326 | May 21, 2026 |
| May 19, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $10.89 | $163k | 22,500 | May 21, 2026 |
| May 20, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $10.60 | $159k | 7,500 | May 21, 2026 |
| May 21, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -7,500 | $10.79 | $81k | 0 | May 21, 2026 |
| May 19, 2026 | Capital V LLC owner | MOption exercise Class B Unitsderivative10b5-1 | -37,500 | $0.00 | $0 | 27,284,326 | May 21, 2026 |
| Apr 20, 2026 | Capital V LLC owner | MOption exercise Class A Common Stock10b5-1 | +37,500 | $0.00 | $0 | 37,500 | Apr 22, 2026 |
| Apr 20, 2026 | Capital V LLC owner | DDisposition to issuer Class B Common Stock10b5-1 | -37,500 | $0.00 | $0 | 27,321,826 | Apr 22, 2026 |
| Apr 20, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $11.12 | $167k | 22,500 | Apr 22, 2026 |
| Apr 21, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -14,111 | $10.91 | $154k | 8,389 | Apr 22, 2026 |
| Apr 22, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -8,389 | $10.74 | $90k | 0 | Apr 22, 2026 |
| Apr 20, 2026 | Capital V LLC owner | MOption exercise Class B Unitsderivative10b5-1 | -37,500 | $0.00 | $0 | 27,321,826 | Apr 22, 2026 |
| Mar 17, 2026 | Timothy Vanderhook CEO and Chairman | MOption exercise Class A Common Stockindirect: By Capital V LLC10b5-1 | +12,500 | $0.00 | $0 | 12,920 | Mar 19, 2026 |
| Mar 17, 2026 | Christopher Vanderhook Chief Operating Officer | MOption exercise Class A Common Stockindirect: By Capital V LLC10b5-1 | +12,500 | $0.00 | $0 | 12,920 | Mar 19, 2026 |
| Mar 17, 2026 | Capital V LLC owner | MOption exercise Class A Common Stock10b5-1 | +37,500 | $0.00 | $0 | 38,760 | Mar 19, 2026 |
| Mar 17, 2026 | Christopher Vanderhook Chief Operating Officer | DDisposition to issuer Class B Common Stockindirect: By Capital V LLC10b5-1 | -12,500 | $0.00 | $0 | 9,119,775 | Mar 19, 2026 |
| Mar 17, 2026 | Timothy Vanderhook CEO and Chairman | DDisposition to issuer Class B Common Stockindirect: By Capital V LLC10b5-1 | -12,500 | $0.00 | $0 | 9,119,775 | Mar 19, 2026 |
| Mar 17, 2026 | Capital V LLC owner | DDisposition to issuer Class B Common Stock10b5-1 | -37,500 | $0.00 | $0 | 27,359,326 | Mar 19, 2026 |
| Mar 17, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $11.80 | $177k | 23,760 | Mar 19, 2026 |
| Mar 17, 2026 | Christopher Vanderhook Chief Operating Officer | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -5,000 | $11.80 | $59k | 7,920 | Mar 19, 2026 |
| Mar 17, 2026 | Timothy Vanderhook CEO and Chairman | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -5,000 | $11.80 | $59k | 7,920 | Mar 19, 2026 |
| Mar 18, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -15,000 | $12.00 | $180k | 8,760 | Mar 19, 2026 |
| Mar 18, 2026 | Christopher Vanderhook Chief Operating Officer | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -5,000 | $12.00 | $60k | 2,920 | Mar 19, 2026 |
| Mar 18, 2026 | Timothy Vanderhook CEO and Chairman | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -5,000 | $12.00 | $60k | 2,920 | Mar 19, 2026 |
| Mar 19, 2026 | Capital V LLC owner | SOpen-market sale Class A Common Stock10b5-1 | -8,760 | $11.42 | $100k | 0 | Mar 19, 2026 |
| Mar 19, 2026 | Christopher Vanderhook Chief Operating Officer | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -2,920 | $11.42 | $33k | 0 | Mar 19, 2026 |
| Mar 19, 2026 | Timothy Vanderhook CEO and Chairman | SOpen-market sale Class A Common Stockindirect: By Capital V LLC10b5-1 | -2,920 | $11.42 | $33k | 0 | Mar 19, 2026 |
| Mar 17, 2026 | Capital V LLC owner | MOption exercise Class B Unitsderivative10b5-1 | -37,500 | $0.00 | $0 | 27,359,326 | Mar 19, 2026 |
| Mar 17, 2026 | Christopher Vanderhook Chief Operating Officer | MOption exercise Class B Unitsderivativeindirect: By Capital V LLC10b5-1 | -12,500 | - | - | 9,119,775 | Mar 19, 2026 |
| Mar 17, 2026 | Timothy Vanderhook CEO and Chairman | MOption exercise Class B Unitsderivativeindirect: By Capital V LLC10b5-1 | -12,500 | - | - | 9,119,775 | Mar 19, 2026 |
| Mar 13, 2026 | Larry Madden Chief Financial Officer | SOpen-market sale Class A Common Stock10b5-1 | -1,658 | $13.03 | $22k | 368,607 | Mar 17, 2026 |
| Mar 15, 2026 | Larry Madden Chief Financial Officer | AGrant or award Class A Common Stock10b5-1 | +249,258 | $0.00 | $0 | 617,865 | Mar 17, 2026 |
| Mar 10, 2026 | Larry Madden Chief Financial Officer | FTax withholding Class A Common Stock | -35,289 | $10.50 | $371k | 370,265 | Mar 12, 2026 |
| Mar 10, 2026 | Christopher Vanderhook Chief Operating Officer | DDisposition to issuer Class A Common Stock | -44,177 | $10.50 | $464k | 303,005 | Mar 12, 2026 |
| Mar 10, 2026 | Timothy Vanderhook CEO and Chairman | DDisposition to issuer Class A Common Stock | -44,177 | $10.50 | $464k | 218,005 | Mar 12, 2026 |
| Feb 17, 2026 | Timothy Vanderhook CEO and Chairman | MOption exercise Class A Common Stockindirect: By Capital V LLC10b5-1 | +12,500 | $0.00 | $0 | 12,500 | Feb 19, 2026 |
| Feb 17, 2026 | Christopher Vanderhook Chief Operating Officer | MOption exercise Class A Common Stockindirect: By Capital V LLC10b5-1 | +12,500 | $0.00 | $0 | 12,500 | Feb 19, 2026 |
| Feb 17, 2026 | Capital V LLC owner | MOption exercise Class A Common Stock10b5-1 | +37,500 | $0.00 | $0 | 37,500 | Feb 19, 2026 |
| Feb 17, 2026 | Christopher Vanderhook Chief Operating Officer | DDisposition to issuer Class B Common Stockindirect: By Capital V LLC10b5-1 | -12,500 | $0.00 | $0 | 9,132,275 | Feb 19, 2026 |
50 of 156 rows shown.
Insiders
Everyone who has filed a Form 4 here.
- Capital V LLCowner
- Larry MaddenChief Financial Officer
- Max O Valdesdirector
- Christopher VanderhookChief Operating Officer
- Timothy VanderhookCEO and Chairman
Questions about DSP
Answered from the filings on this page, as of the latest one.
Are insiders buying DSP?
As of Sep 18, 2026, SEC Form 4 filings show 0 open-market buys worth $0 by 0 insiders and 1 open-market sell worth $390k by 1 insider at Viant Technology Inc. in the last 90 days, net -$390k. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade DSP on the open market?
Larry Madden (Chief Financial Officer) sold $390k of DSP on Sep 16, 2026 and filed the Form 4 on Sep 18, 2026. InsiderTell scored 18 (weak), under a 10b5-1 plan.
How many insiders file Form 4 at Viant Technology Inc.?
5 people have filed a Form 4 at Viant Technology Inc., among them Capital V LLC (10% owner), Larry Madden (Chief Financial Officer), Max O Valdes (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.