Emile Hirsch -- Pleads Guilty to Assault ... 15 Days In Jail

Emile Hirsch will spend 15 days in the slammer for the Jan. 25 assault on a female studio exec during the Sundance Film Festival.

Hirsch pled guilty to misdemeanor assault Monday in Salt Lake City. He also has to pay a $4,750 fine and do 50 hours of community service.

As TMZ first reported, Hirsch put the Paramount exec in a chokehold. She said she thought she was going to die. Law enforcement told us at the time Emile was heavily intoxicated. He checked himself into rehab shortly after the incident.