The new Fox regime is shaking things up in the event series arena, exiting the two network executives working in the department, SVP Shana C. Waterman, who is expected to leave in mid-November, and VP Jeni Mulein. Fox Entertainment president David Madden, who comes from long-form producing background, will run the department until he finds a replacement.

Fox was the first broadcast network to jump on the event series bandwagon when the network joined forces with sibling FX in 2012 to launch an FX Prods.-based long-form production division run by Gina Balian.

It’s been hit and miss for Fox’s first two event series efforts, 24: Live Another Day did well as it extended a well known series franchise, while this fall’s Gracepoint has been struggling. Next up is M. Night Shyamalan’s Wayward Pines.

The event series shakeup, first reported by Variety, is one of the first major executive moves at Fox since Dana Walden and Gary Newman took the reins of the network and brought in Madden.

Waterman was named to the then-newly created position of SVP, Event Series & Multi-Platform Programming in February 2013. Before that, the eight-year Fox veteran was SVP Current Programming. Mulein joined Fox in September 2013 from Original Film.