Chief Technology Officer Parag Agrawal will take over as Twitter CEO. ​​​​​​: Jack Dorsey, co-founder and chief executive officer of Twitter Inc. and Square Inc., speaks during the Bitcoin 2021 conference in Miami, Florida, U.S., on Friday, June 4, 2021 Jack Dorsey, the co-founder and CEO of Twitter Inc., is stepping down, ceding the position to the company’s Chief Technology Officer Parag Agrawal. The move is effective immediately, though Dorsey will stay on the board of the social media company until his term expires in 2022, Twitter said in a statement Monday.