Sony Pictures Television‘s longtime head of production Ed Lammi is retiring at the end of this year, following a 36-year run at the studio and 28 years in his current position.

No details were immediately available regarding who will replace Lammi as executive vice president of production, a role he has held since 1995. A source tells Variety plans have not yet been set for that transition, as Lammi will remain at his post through December.

Lammi joined Sony Pictures TV in 1987 as vice president in charge of production of multi-camera videotaped series. Eight years later, he was promoted to head of all production at Sony’s TV studio and has since overseen scripted comedies and dramas, reality and non-scripted programming, made-for-TV movies, game shows, talk shows as well as animated programming. Among the many hit series made under Lammi are “Breaking Bad,” “The Boys,” “Cobra Kai” and “Outlander.”

“Ed’s tireless commitment was also evidenced by our team being one of the first studios to get productions safely up and running again during COVID,” Sony Pictures TV president Katherine Pope said in a memo to staff Monday. “Ed’s contributions to SPT’s productions not only set high standards at the studio, but have also been instrumental to our success over the years.”

Pope added: “Beyond his professional achievements, Ed has been a mentor, a leader, and wonderful colleague. Ed is always willing to listen, to roll his sleeves up, and help solve any problem thrown his way. And, as an instructor teaching Production Management at Carnegie Mellon University’s MEIM program, he continues to educate and inspire new generations of production professionals.”