Johnson fled to the Philippines after a federal grand jury indicted him and McKye on money laundering and securities fraud charges in February 2011. Authorities in the Philippines arrested Johnson in Manila in March 2012.
Attempts to contact Johnson's attorney Matthew Kane were unsuccessful on Tuesday.
In court documents submitted in the case, Kane had argued that Johnson should receive a reduced sentenced because he faced inhumane treatment while imprisoned in the Philippines for six weeks while awaiting extradition.
Kane also argued that Johnson should not face a lengthy prison sentence because he is a military veteran and has a drinking problem.
Johnson also pleaded guilty to the charges and assisted the federal government with its case, the court documents said.
In April 2012, McKye was sentenced to 21 years in prison and ordered to pay $4.5 million in restitutions to his victims.
McKye has appealed his conviction to the 10th U.S. Circuit Court of Appeals.