Another veteran MTV Networks executive is leaving the company, which has been undergoing a string of executive changes. Lauren Dolgen, who had been at MTV for 19 years, is stepping down as Head of Reality Programming and EVP of Series Development. Her position won’t be replaced.

Primetime-Panic Your Complete Guide to Pilots and Straight-to-Series orders See All

Dolgen was named to the new post in March 2015 in one of multiple executive reshufflings over the past few years at MTV, which also underwent a company-wide round of layoffs. She previously was Head of West Coast Reality and EVP of Series Development. Dolgen’s scripted counterpart, Mina Lefevre, is staying on.

.

Dolgen’s departure comes three months after Michael Klein joined MTV as EVP Original Content in March. When the network’s previous head of programming Susanne Daniels exited her post in July 2015, the plan was to not fill the position, with Lefevre and Dolgen, named co-heads of programming, reporting to then-MTV president Stephen Friedman.

A couple of months later, Sean Atkins replaced Friedman. He subsequently brought in Klein, to whom Lefevre and Dolgen began to report.

Dolgen was the last top MTV executive from the network’s glory days still working at the network. In recognition of Dolgen’s tenure at MTV and her track record, she was given a sendoff by Doug Herzog, president of Viacom’s Music & Entertainment Group, who wrote:

As someone who’s been around Viacom for a good chunk of Lauren’s career, I was able watch it unfold with great deal of admiration. I just want to echo Michael and thank Lauren for her great work and enormous contributions to MTV. She has always been a fierce champion of the brand. Her fingerprints and great work are all over MTV and it’s original programming. I’ve truly enjoyed getting to know her over this past year. I’m excited to see what comes the next chapter brings.

Here is Klein’s internal memo on Dolgen’s departure: