https://groups.google.com/group/alt.tv.nickelodeon/browse_thread/thread/f329a4ad3ba359ff#

Longtime Nickelodeon executive Marjorie Cohn is leaving the network (http://www.toonzone.net/forums/nicktoons/303163-marjorie-cohn-leaves-nick.html)
after 26 years, Deadline.com (http://www.deadline.com/2013/04/nickelodeons-marjorie-cohn-to-exit/) reports.

Cohn is currently the President of Content Development at Nick and
over her tenure at the network has worked on many series, including
Rugrats, All That, SpongeBob SquarePants, iCarly and just about
everything in-between.

The report also states that Alison Dexter (Executive Vice President at
Nickelodeon Production) has left the network.