<div id="readability-page-1"><div><p><span>Vanderhook Christopher, Chief Operating Officer of Viant Technology Inc [DSP], filed a Form 144 on December 15, 2025 with the Securities and Exchange Commission proposing to sell restricted securities:</span></p><div><table><tbody><tr><td><span>Approximate Date Of Sale</span></td><td><span>12/16/25</span></td></tr><tr><td><span>Shares</span></td><td><span>9,500</span></td></tr><tr><td><span>Broker</span></td><td><span>Morgan Stanley Smith Barney LLC</span></td></tr></tbody></table></div><p><span>Prior to the sale of restricted stock, owners must file a Form 144 with the SEC.  Upon submission of the filing to the SEC the owner is permitted to sell the shares, or any fraction thereof, within 90 days.</span></p><p><span>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

<p>Vanderhook Christopher, COO of Viant Technology Inc, filed a Form 144 with the SEC to sell 9,500 shares on December 16, 2025, through Morgan Stanley Smith Barney LLC. This filing allows the sale of restricted securities within 90 days. The Washington Service provides related insider trading analysis and data services.</p>

COO Vanderhook Files To Sell 9,500 Of Viant Technology Inc [DSP]