The co-founder, who twice served as Twitter CEO, most recently until 2021, is also the CEO of payments company Block, formerly known as Square.

Twitter co-founder Jack Dorsey has left the social media platform’s board of directors, just weeks after playing a key role in the company’s sale to Elon Musk.

The departure was planned. Twitter initially announced in November that Dorsey would exit the board when his term expired at the company’s 2022 shareholders’ meeting. The meeting took place Wednesday.

This means all of Twitter’s founders have now severed official ties with the company.

On April 25, Twitter’s board unanimously approved the sale of the company to Musk, Tesla’s CEO, for $44 billion. Dorsey seemed to personally endorse the move, tweeting that he believed Musk could take the company in a sound direction.

Dorsey has most recently garnered headlines for his ardent support of Bitcoin, and recent tweets suggest that he will continue to support the cryptocurrency.