Exhibit 99.1 Viant Technology Announces First Quarter 2024 Financial Results; Board of Directors Authorizes $50 Million Stock Repurchase Program IRVINE, Calif., Apr. 30, 2024 – Viant Technology Inc. (Nasdaq: DSP), a leading advertising technology company, today reported financial results for its first quarter ended March 31, 2024. “We had a strong start to the year as the momentum we saw in the second half of 2023 continued through the first quarter,” said Tim Vanderhook, Co-Founder and CEO, Viant. “Our per ...