At his other companies, which include the electric automaker Tesla and the rocket maker SpaceX, Mr. Musk has sometimes appointed a key adviser to manage the business in his absence. At SpaceX, the task has fallen to Gwynne Shotwell, its president and chief operating officer.At Twitter, Mr. Musk had opted to run the company himself. He has borrowed employees from his other companies, including Tesla and the Boring Company, a tunneling start-up, to join him. Steve Davis, the president of the Boring Company, has led various cost-cutting initiatives at Twitter. Mr. Musk has had people rotate in and out to advise him on legal and financial matters, including the investor Antonio Gracias, a former Tesla board member, and Alex Spiro, his personal lawyer.Mr. Musk has a …
