After 11 years with the Peacock Marc Graboff is poised to exit his post as prexy of West Coast business operations at NBC and Universal TV.

Graboff’s departure is not unexpected, given the management transformation at network and studio since Comcast took control of NBCUniversal. But it’s understood that the decision to part ways was amicable and instigated by Graboff.

Graboff had been working closely with new NBC Entertainment topper Bob Greenblatt, but recently decided it was time to move on after being offered an opportunity involving a private equity concern. He has about two years left to go on his current contract. He’s expected to remain at NBC through the end of the year.

“While I personally would have loved him to stay with us for this new phase of NBC, I know first-hand that feeling when it’s time to make a change in one’s career,” Greenblatt wrote in a memo sent to NBC staffers on Friday. He saluted Graboff for his tenure, noting that the exec had been “enormously helpful” during the past 11 months.

Graboff joined NBC as head of business affairs in 2000 after three years in the same post at CBS. Graboff weathered numerous regime changes and bosses during his tenure at NBC, from Scott Sassa to Jeff Zucker to Jeff Gaspin and finally, Greenblatt. From 2007-2009 he was partnered with Ben Silverman as co-chair of NBC Entertainment.

Because of all the turnover at the top, Graboff had long been seen as NBC’s bastion of stability. He’s highly regarded by Peacock staffers and industry colleagues.

Graboff’s exit leaves a void in oversight of business affairs for NBC and its newly separated studio sibling, Universal TV. It’s not immediately clear how Greenblatt intends to fill those roles.