Former Pivot TV and Participant Media executive Lyle Gamm has joined CNN Original Series as senior vice president.

Based in Los Angeles, Gamm will be tasked with overseeing the production of the network’s original series portfolio as well as managing the company’s development, current and production teams in Los Angeles and Atlanta.

He replaces Lizzie Fox who recently joined HBO Max, WarnerMedia’s forthcoming direct-to-consumer streaming platform, as SVP of non-fiction programming.

Most recently, Gamm served as VP of original programming for Pivot TV and Participant Media, where he oversaw all unscripted programming and was executive producer of such titles as Secret Lives of Americans, Truth and Power, Angry Planet, Welcome to Fairfax and Hit Record on TV with Joseph Gordon-Levitt.

Before that, Gamm served as a development consultant for Vox Media and Blumhouse Television.

Additionally, he has experience as a freelance television producer, working closely with director and producer R.J. Cutler as both a producer and showrunner over the course of two decades. Gamm’s credits with Cutler include The September Issue, Fish, The Residents, American Candidate and Morgan Spurlock‘s 30 Days.

“Lyle is a highly regarded creative executive with deep experience as a network programmer, showrunner and development consultant. He is very knowledgeable about acquiring and developing shows as well as overseeing current series,” said Amy Entelis, EVP of talent and content development at CNN Worldwide, in a statement.