Monsters' star Cooper Koch just became a first-time Golden Globe nominee for his role as Erik Menendez in the Ryan Murphy series, and he tells PEOPLE he was "so anxious" and "couldn't sleep" ahead of the announcement.

This is a Cooper Koch stan account! Out actor Cooper Koch has seen a meteoric rise in the public eye after his starring role as Erik Menendez in Ryan Murphy's Netflix series Monsters: The Lyle and Erik Menendez Story.

Cooper Koch auditioned for NBC's 'Law & Order' series about the Menendez case and a Lifetime movie before being cast as Erik in Netflix's 'Monsters'

The actor, 28, tells PEOPLE he's "most happy and excited" about having more opportunity to advocate for the brothers' release from prison at the awards show

On a scale of one to 10, Cooper Koch is a “three million” after receiving a Golden Globes nomination on Monday morning for his leading role on “Monsters: The Lyle and Erik Menendez Story.” “This is truly one of the best Mondays I have ever had,

The nominations for the Golden Globe Awards are a starry collection of the biggest names from film and television. “Emilia Pérez”is the leading nominee with 10, but Monday's nominations gave a boost to several films hoping to be in contention for the Academy Awards,

Before Cooper Koch was cast in Monsters, he auditioned to play Erik Menéndez in two other high-profile projects. "The reason why he's been with me for so long is because I auditioned to play him seven years ago for the Law & Order series and for the Lifetime movie,