Form 4: Viant COO Vanderhook Sells Shares in Planned Transactions

Viant Technology Inc. Chief Operating Officer Christopher Vanderhook reported sales of Class A Common Stock, including tax-related and 10b5-1 plan transactions.

Summary

• Christopher Vanderhook, Chief Operating Officer, Director, and 10% Owner of Viant Technology Inc., reported several transactions involving the company's stock.
• On December 16, 2025, Vanderhook exchanged 12,500 Class B Units for an equal number of Class A Common Stock, resulting in the automatic cancellation of 12,500 Class B Common Stock. These Class B Units are exchangeable on a one-for-one basis into Class A common stock.
• On December 17, 2025, he directly sold 9,102 shares of Class A Common Stock at a price of $11.704 per share. This sale was initiated by the Issuer to cover estimated taxes associated with the vesting and settlement of restricted stock units.
• Also on December 17, 2025, 5,000 shares of Class A Common Stock were sold indirectly through Capital V LLC at a weighted average price of $11.7366 per share.
• On December 18, 2025, an additional 5,000 shares of Class A Common Stock were sold indirectly through Capital V LLC at a weighted average price of $11.928 per share.
• The sales through Capital V LLC were executed under a Rule 10b5-1 plan adopted on March 18, 2025, and subsequently amended on September 17, 2025.
• Vanderhook holds a one-third interest in Capital V LLC, implying an indirect pecuniary interest in one-third of its total holdings.
• Following these transactions, Vanderhook beneficially owns 347,182 Class A Common Stock directly and 7,500 Class A Common Stock indirectly via Capital V LLC, along with 9,157,275 Class B Common Stock indirectly via Capital V LLC.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While insider selling can sometimes be viewed negatively, these sales are explicitly for tax purposes and under a pre-arranged 10b5-1 plan, which are common and expected events for executives and do not necessarily signal a lack of confidence in the company's future.

Positives

• The sale of 9,102 shares was explicitly for covering estimated tax obligations, which is a common and expected event for executives receiving equity compensation.
• The sales of 10,000 shares through Capital V LLC were conducted under a pre-arranged Rule 10b5-1 plan, indicating a scheduled and anticipated divestment strategy rather than a sudden reaction to new information.

Negatives

• Insider selling, even if planned or for tax purposes, can sometimes be perceived negatively by the market as it reduces the insider's direct stake in the company.
• A total of 19,102 shares of Class A Common Stock were sold by the Chief Operating Officer over two days.

Future Outlook

NA

Industry Context

This Form 4 filing details routine insider transactions for Viant Technology Inc. and does not provide broader industry context. The sales are consistent with common executive financial planning, including tax obligations and pre-scheduled divestments under Rule 10b5-1 plans, which are standard practices across various industries for managing executive compensation and liquidity.

Related Party Transactions

• The sales of 10,000 Class A Common Stock were conducted indirectly through Capital V LLC, in which the reporting person holds a one-third interest. This constitutes a related party transaction.

Stakeholder Impact

• Shareholders: The sale of shares by a key executive could be perceived as a slight negative, though the stated reasons (tax obligations, 10b5-1 plan) mitigate this. It represents a minor reduction in insider ownership.
• Employees: No direct impact on employees is mentioned in this filing.
• Customers/Suppliers/Creditors: No direct impact on customers, suppliers, or creditors is mentioned in this filing.

Next Steps

• The reporting person undertakes to provide full information regarding the number of shares sold at each separate price within the reported ranges upon request from the Issuer, any security holder, or the SEC staff.

Key Dates

Recommendation

The reported transactions are routine insider sales, primarily for tax obligations and under a pre-arranged 10b5-1 plan. These are common occurrences for executives and do not typically indicate a change in the company's fundamental outlook or the insider's long-term confidence. Therefore, based solely on this Form 4, a seasoned investor would likely maintain their current position, awaiting more substantive operational or financial news for a re-evaluation.

Keywords

Viant Technology Inc., DSP, Christopher Vanderhook, Insider Trading, Form 4, Stock Sale, Class A Common Stock, Class B Units, 10b5-1 Plan, Officer Transaction, Director Transaction, 10% Owner, Equity Sales, Tax-related Sale