https://www.siliconvalley.com/2022/04/05/twitter-names-musk-to-board-saying-hes-exactly-what-we-need/

Twitter Inc. named Elon Musk to its board a day after it was publicly disclosed that the chief executive officer of Tesla Inc. had amassed a 9.2% stake in the social-media company.

According to a filing with the Securities and Exchange Commission on Tuesday, Musk will not own more than 14.9% of Twitter during his time on the board and up to 90 days thereafter. Musk’s term on the board is set to expire at Twitter’s 2024 annual meeting. Twitter’s shares jumped 8% in early trading in New York.