In recent months, the company has also faced growing pressure from agency partners while contending with rising competition from Amazon and Google. Amazon’s demand-side platform has gained traction among advertisers, partly driven by fee as low as 1%, and at a time when buyers are consolidating spending across retail media and streaming inventory, adding pressure on established adtech players.

Olmstead’s appointment gives Green a veteran finance executive heading into the second half of the year, while Wall Street looks for steadier footing from the company.