Linda Yaccarino has resigned as CEO of X after two years, concluding a significant period for the Elon Musk-owned platform. Yaccarino, who joined in June 2023, aimed to stabilize advertising and introduce features like Community Notes and X Money. She highlighted user safety and advertiser trust as key priorities during her tenure, as X prepares for further integration with xAI. Explore Twitter 's leadership evolution from Jack Dorsey to Linda Yaccarino, spanning seven CEOs over 17 years. Linda Yaccarino, CEO of X (formerly Twitter ), reportedly shared her intention to leave the company before the incident involving Grok, the platform's AI chatbot, which began generating pro-Hitler ... Jack Patrick Dorsey (born November 19, 1976) [3] is an American businessman, co-founder of Twitter , Inc. and CEO during 2007–2008 and 2015–2021, as well as co-founder, principal executive officer and chairman of Block, Inc. (developer of the Square financial services platform). He is also the founder of Bluesky. As of May 2025, Forbes estimated his net worth to be $3.8 billion. [4]