8,500,000 Shares

Viant Technology Inc.

Class A Common Stock

   
 

The selling stockholder identified in this prospectus supplement (the "selling stockholder") is offering 8,500,000 shares of our Class A common stock. We will not receive any proceeds from the sale of our Class A common stock by the selling stockholder.

We will grant the underwriters an option, exercisable for 30 days after the date of this prospectus supplement, to purchase up to an additional 1,275,000 shares of our Class A common stock from us at the public offering price, less the underwriting discount. We will receive all of the net proceeds from the sale of any shares of Class A common stock sold by us upon exercise of that option.

Our Class A common stock is listed on the Nasdaq Global Select Market ("Nasdaq") under the symbol "DSP." The last reported sale price of our Class A common stock on Nasdaq on September 15, 2026 was $12.60 per share.

We have two classes of common stock outstanding: Class A common stock and Class B common stock. Each share of Class A common stock and Class B common stock entitles its holder to one vote on all matters presented to our stockholders generally. All of our Class B common stock is held by the Continuing LLC Owners (as defined herein), on a one-for-one basis with the number of Class B units they own.