Kate McKinnon, Pete Davidson among 4 cast members departing from SNL

Kate McKinnon and Pete Davidson are among those leaving Saturday Night Liveleaving the institution of sketch comedy with arguably its two most famous names after Saturday’s 47th season finale.

Aidy Bryant and Kyle Mooney will also leave the cast after the episode hosted by Natasha Lyonne.

The departures represent one of the biggest cast shakeups in years in a show that has seen unusual stability in recent seasons.

McKinnon, 38, won two Emmys and was nominated for nine of her 10 seasons on the show, during which her impressions included Hillary Clinton and former US Attorney General Jeff Sessions. His comedic chops with characters like the abducted alien Miss Rafferty frequently caused castmates and guest hosts to lose him live.

McKinnon opened the show with an out-of-this-world skit and said his final goodbyes on “Earth.”

“I love you, thank you for letting me stay a while. Live from New York, it’s Saturday night,” she said at the start of the show.

Davidson, 28, joined the cast in 2014 and appeared in eight seasons. His own oversized personality often overpowered the characters he played. His comedic comments as himself on “Weekend Update” were often his most viral tracks. And he was as known for his off-screen life — dating Ariana Grande and current girlfriend Kim Kardashian — as he was on.

“I never imagined this would be my life,” Davidson said on the show. “I appreciate SNL for always supporting me, for allowing me to work on myself and grow.

“Thanks for [SNL creator and producer] Lorne [Michaels] for never giving up on me or judging me even when everyone else was, for believing in me and allowing me to have a place I could call home with memories that will last a lifetime. Thank you.”

Bryant, 35, joined the cast at the same time as McKinnon and has been a constant in the sketches ever since, earning four Emmy nominations herself.

Mooney, 37, appeared in nine seasons beginning in 2013.