Elon Musk has officially joined Twitter’s board of directors a day after disclosing that the Tesla CEO took a 9 percent stake in the social media platform.

Mr. Musk is set to be appointed to a board seat that expires in 2024. For as long as he is serving on Twitter’s board, and for 90 days after if he chooses to step down, he will not be allowed to own more than 14.9 percent of Twitter’s stock.

“Through conversations with Elon in recent weeks, it became clear to us that he would bring great value to our board,” Twitter’s chief executive, Parag Agrawal, tweeted on Tuesday.

Musks also wrote;

“Looking forward to working with Parag & Twitter board to make significant improvements to Twitter in coming months!”