Jack Dorsey

In a surprise tweet, Twitter CEO Jack Dorsey said he’s stepping down

In announcing his surprise resignation on Monday, Twitter CEO Jack Dorsey was characteristically off-the-cuff. “Not sure anyone has heard, but I resigned from Twitter,” he tweeted unexpectedly, ending his parting missive about the company’s future with “Hi mom!” For over 15 years, Dorsey‘s freewheeling approach has helped him become...