The article mentions that the defendant was convicted of securities fraud, a "Class Three Felony" in Colorado. According to this web site[1]:

"Class three felonies, such as vehicular homicide while under the influence, are punishable by four to 12 years behind bars and five years of parole."

[1] http://www.mbslawco.com/blogs/2015/october/understanding-man...

Yep. We talked to the judge after the case and he said that the punishment could range from probation to 12 years in state prison. The defendant has no criminal history, so I would imagine the sentence will be relatively light.

With a felony on your record, no sentence is a light sentence. He'll be haunted by his conviction until he dies, can get records sealed (depending on his state), or receives a presidential pardon.