TikTok says ad leader Khartoon Weiss is leaving to pursue a new opportunity after nearly six years at the company, the latest high-profile executive to exit (Alexandra S. Levine/Bloomberg)

Alexandra S. Levine / Bloomberg: TikTok says ad leader Khartoon Weiss is leaving to pursue a new opportunity after nearly six years at the company, the latest high-profile executive to exit — TikTok advertising leader Khartoon Weiss is leaving the short-form video company, joining a wave of American executives stepping down over the past year.