Mark Alan Smith pleaded guilty in May 2012 to the charges, according to court records. Smith will also have to be placed under 15 years of supervised release after his time in prison.

The decision means Mark Alan Smith, 75, will continue serving the 500-year sentence handed to him in 1971, after he was convicted of killing two women in McHenry County and a third in Des Plaines.

Mark Alan Smith's most active month to dispose stocks was the month of July. 2021 saw Mark Alan Smith paying a total of $8,799.75 for 4,915 shares , this is the most they've acquired in one year .