The Fred Rogers Company has upped Paul Siefken to president and CEO, effective January 1, following the retirement of longtime leader Bill Isler.

Previously VP of broadcast and digital media, Siefken will further develop the company’s existing partnerships, forge new ones and push content towards both broadcast and digital platforms.

Siefken joined The Fred Rogers Company in 2013. He has since steered the company’s broadcast content, managed the digital production pipelines of its standout series and worked with production partners.

Siefken also spearheaded initiatives to bring Fred Rogers series, which include Daniel Tiger’s Neighborhood, Peg + Cat and Odd Squad, into communities around the US via public TV stations, museums, science centers, libraries, volunteer organizations and children’s groups.

Prior to joining The Fred Rogers Company, Siefken spent almost a decade at PBS, most recently serving as director of children’s programming. Previously, he managed sponsored promotion, media relations and interactive content for Cartoon Network.

Earlier this year,Ellen Doherty was named as The Fred Rogers Company’s executive in charge of production.