AMC Networks' long-time ad sales chief Arlene Manos will step down from her post, the company said Thursday.
Taking over the duties of selling ad time in shows like "Walking Dead" and "Better Call Saul" is network veteran Scott Collins, who currently serves as exec VP of the division.
Ms. Manos will leave her role as president of ad sales at the end of the year to become president emeritus of the group.
For over a decade, Ms. Manos has led ad sales for the company's portfolio of networks, which includes the namesake channel, along with IFC, SundanceTV and We TV, as well as BBC America and BBC World News.
"It has been an honor to be part of the team involved with creating what are among the strongest and most respected brands in entertainment," Ms. Manos said in a statement. "The experience of building this industry-leading team and succeeding in an era of rapid and seismic shifts in the media and entertainment marketplace have been among the most rewarding segments of my career."
Ms. Manos was responsible for starting an ad sales division when she joined the company in 2002. Prior to this, AMC had been predominantly commercial-free. She also spearheaded WE TV's transition to become a fully ad-supported network and was behind the effort to evolve IFC and SundanceTV into ad-supported channels.
Ms. Manos began overseeing ad efforts for BBC America and BBC World News in 2014, following a joint-venture with BBC Worldwide.
Prior to AMC, Ms. Manos served in several sales positions, including leading national ad sales for A&E Networks.
Mr. Collins joined AMC in 2008. He previously held sales roles at NBC Universal and A&E Networks.
The move is the latest recent ad sales shakeup in the TV business. Earlier this week, NBCU announced Seth Winter would retire from his role as head of ad sales for the sports group next month, and this summer ad sales veteran Joe Abruzzese announced his retirement from Discovery Communications effective at the end of the year. Viacom's head of ad sales Jeff Lucas departed the company in June for a similar role at Snapchat and was succeeded by Sean Moran.