I’ve learned that Sharon Hall has left Alcon Entertainment where she served as president of Alcon Television. I hear Hall halland Alcon couldn’t come to terms on a new agreement, and Hall opted to move on. Talks are underway on an arrangement that would allow her to continue to work on projects that she has developed.

Hall joined Alcon Entertainment in 2012 and launched the company’s television division. The projects she shepherded include the HBO documentary Sinatra: All or Nothing At All, which this week received an Emmy nomination for best documentary or nonfiction special, and the upcoming Syfy series The Expanse, which was screened at Comic-Con last week. Hall also has set up a slew of projects in development at various networks.

“As founding President of Alcon Television Group, I am proud to have produced the Emmy nominated Sinatra: All or Nothing At All as well as the upcoming Syfy series The Expanse,” Hall said in a statement to Deadline. “I appreciate the confidence Alcon has shown in me and the effort they have made to continue this relationship. I’ve decided this is time for me to pursue other opportunities.”

Before joining Alcon, Sharon served as head of drama for Sony Pictures TV. She started at Sony TV in 2005 as an executive consultant to oversee the fall development slate and pilot production. She was upped to SVP Drama in early 2006 and EVP in 2009. Among the projects she oversaw there was Showtime drama Masters of Sex .