As of Saturday afternoon, Musk has been set up under internal profiles at Twitter, including a company directory and Slack, with the CEO title, two people familiar with the changes told Insider.
A few days before the deal closed, Musk changed his Twitter bio to read only "Chief Twit."
He told employees during a meeting in June that he expected to be the leader of Twitter, but said the title of CEO was not important to him.
Since taking over Twitter, Musk has met employees with silence.
Meanwhile, he and his personal team of executives and assistants have gone about transitioning operations to Musk's control and planning layoffs, as Insider reported.