Chernin's and Currie's terms expire in 2016 and Fenton's in 2017, according to the company's latest annual filing, but board directors can step down at any time, or can alert the company if they intend to leave once their term is up.
As part of the expected board change, CEO Jack Dorsey wants to diversify the board, according to sources, meaning the addition of more women and racially diverse board members. Before Omid Kordestani — who was born in Iran — was named Twitter's chairman early last month replacing former CEO Dick Costolo, the board consisted of seven white men and one white woman.
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Twitter has not yet settled on whom it is looking to recruit. One interesting option would be longtime Pepsi CEO Indra Nooyi, who just joined the service last week.
The issue of diversity is an important one, the company has said, specifically for Dorsey. On Friday, human rights activist and one of the leaders of the #BlackLivesMatter movement DeRay McKesson visited company headquarters for a Q&A session with Dorsey. That took place just two days after a former employee took to Medium to criticize the company's diversity efforts, claiming "there was very little diversity in thought and almost no diversity in action" at the company.