<div id="readability-page-1"><div><p><span>Vanderhook Christopher Chief Operating Officer of Viant Technology Inc [DSP] filed a Form 4 on December 18, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><th><span>Date</span></th><th><span>Transaction</span></th><th><span>Shares</span></th><th><span>Price</span></th><th><span>Value</span></th></tr><tr><td><span>12/17/25</span></td><td><span>Surrender(1)</span></td><td><span>9,102</span></td><td><span>$11.70</span></td><td><span>$106,530</span></td></tr><tr><td><span>12/17/25-12/18/25</span></td><td><span>Planned Sale(2)</span></td><td><span>10,000</span></td><td><span>$11.83</span></td><td><span>$118,323</span></td></tr></tbody></table></div><p><span>Ending Holdings: 349,682 (347,182 - Direct, 2,500 - Indirect)</span></p><div><table><tbody><tr><td><span>(1)</span></td><td><span>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</span></td></tr><tr><td><span>(2)</span></td><td><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></td></tr></tbody></table></div><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, disclosed changes in ownership in a Form 4 filed with the SEC. On December 17-18, 2025, he surrendered 9,102 shares at $11.70 each and sold 10,000 shares at $11.83 each, totaling $118,323. The transactions were executed under a prearranged trading plan (10b5-1). Ending holdings are 349,682 shares.</p>

COO Vanderhook Sells 10,000 ($118.3K) Of Viant Technology Inc [DSP]