COO’s Recent Buy Signals Confidence Amid Mass Insider Sales at Viant Technology Inc.

Insider Activity at Viant Technology Inc. – What the Latest Deal Means

Recent Deal Overview On March 17, 2026, Chief Operating Officer Christopher Vanderhook purchased 12,500 shares of Viant’s Class A common stock at $11.61, a price virtually identical to the market close ($11.78). The trade, executed under a 10‑b5‑1 plan, adds to a series of recent transactions involving the same shareholder and the company’s major investor, Capital V LLC. The buy occurs amid a broader pattern of insider sales—most notably a planned sale of 113,760 shares by Capital V to Goldman Sachs via a private transaction, and several sizable 10‑b5‑1 sales by the COO in February and March.

Implications for Investors The timing of the purchase is telling. While the share price has slid 7.86 % in the week and 26.20 % over the month, the COO’s purchase suggests confidence in a rebound or at least in the long‑term trajectory of the business. Insider buying in a tech company that has been volatile is often a bullish signal, indicating that the executive believes the stock is undervalued relative to its fundamentals—particularly its price‑earnings ratio of 30.43, which sits comfortably below the Nasdaq’s average for the sector. However, the concurrent high‑volume sales by Capital V and the CFO raise the question of whether the company’s equity program is being used primarily for liquidity rather than value creation. If the market perceives these sales as “selling pressure,” the stock could experience short‑term volatility, even if the underlying business remains solid.

What This Means for Viant’s Future Viant’s core offering—automation software for advertising campaigns—continues to attract global clients, but the company faces intense competition from larger incumbents and newer cloud‑based platforms. The insider activity, particularly the large 10‑b5‑1 plan sales, indicates that the leadership is comfortable with disciplined liquidity management. The COO’s recent purchase counters that narrative, hinting that the company’s growth prospects remain attractive. Investors should monitor the company’s earnings guidance and product roadmap, as a robust pipeline will be key to sustaining the share price after the scheduled private sale.

Profile of Christopher Vanderhook Over the past 12 months, Vanderhook has executed 27 insider trades: 15 sells and 12 buys, with a net sale of roughly 5 million shares. The bulk of his selling activity—most of which is tied to a 10‑b5‑1 plan—has occurred in the first quarter, suggesting a pre‑planned liquidity strategy. The 12,500‑share purchase on March 17 is his most recent buy and the largest since January, when he acquired an additional 12,500 shares. His holding balance has fluctuated between 7,500 and 12,500 shares in Class A stock, while his Class B unit holdings remained largely unchanged, reflecting a conservative stance on the more diluted share class.

Vanderhook’s pattern reveals a seasoned insider who uses 10‑b5‑1 plans to manage personal cash flow while maintaining a long‑term stake in the company. His recent purchase amid a series of sales signals a belief in Viant’s upside—an optimistic view that may reassure cautious investors.

Bottom Line The COO’s buy is a positive signal, but not a guarantee against short‑term volatility caused by the broader insider selling program. Investors should weigh this insider confidence against the company’s competitive landscape and the timing of Capital V’s private sale. A disciplined approach—monitoring earnings, product launches, and the market’s reaction to insider trades—will be essential for those looking to position themselves in Viant Technology Inc.