Why is the time right to end the series?
Graeme Manson: Four seasons on Orphan Black, we chew up a lot of story every season. We chew up a couple seasons worth of story every season; it’s a fast-paced show. I think we’ve done a good job of keeping the show sharp and relevant with packing all that much stuff in and our biggest fear is repeating ourselves. We just didn’t want the show to become watered down. We really think it’s cooler to cancel yourself. (Laughs.) To go out on your own terms telling the story that we want to tell. That’s the way we presented it to our networks and they were good enough to agree with us and to not want to drag it out and get other showrunners involved or anything.
Have you considered any spinoffs? Has been there talk of that?
Graeme Manson: Yes, there has been some loose talk of that, but I can’t say where it’s at right now. We’re completely consumed with this. We’ve always jokingly said we ‘d love to do a movie, but those aren’t things that, at this point, that we know are going to be happening at all. I think we’re looking forward to a rest. (Laughs.)
Source and more: THR