Nancy Dubuc stepped down as CEO of A&E Networks on Monday and is in advanced talks to become CEO of Vice Media.
Abbe Raven, who was Dubuc's predecessor, will return as acting chair until a successor is found, according to A&E Networks. Raven had retired in 2015 after more than three decades at the company.
"Anyone who knows me well knows I am an entrepreneur, creator, rebel and disruptor at heart," Dubuc said in a statement. "I have a famous neon sign in my office that blares 'Who dares wins.' After 20 years at A+E, the hardest thing will be to leave the people and company I love. But, as a creative executive and leader, and to stay true to my personal mantra, I need my next dare and my next challenge."