https://www.reuters.com/article/us-tiktok-ceo/tiktok-ceo-mayer-quits-after-three-months-just-as-firm-challenges-u-s-ban-idUSKBN25N0DV

TikTok CEO Kevin Mayer has left the Chinese-owned video app firm just three months since joining, and only days since the company sued the administration of U.S. President Donald Trump over an executive order effectively banning it in the United States.