AMC Networks’ general counsel Jamie Gallagher will retire at the end of 2024 after 16 years at the legal helm, the entertainment company announced in a regulatory filing.

Gallagher steered the network through a number of milestones, including its 2011 IPO, and the creation of AMC Studios, the network’s in-house production studio behind hits like Mad Men, Breaking Bad and The Walking Dead. Gallagher also helped establish its targeted streaming portfolio, led by its flagship streamer AMC+.