Also of note, in the NY Times article[1], they call out how his defense tried to mount a defense based on the financial profit or personal gain portion of the definition.
The defense asked why Mr. Shkreli, if he wanted to commit fraud, didn’t commit fraud: He ultimately paid back his investors with shares of Retrophin, which became valuable, along with cash. His lawyers also asked how Mr. Shkreli profited, painting him as a hardworking oddball who, rather than throwing in the towel after his funds imploded, vowed to get his investors’ money back. He paid them back late, they argued, but he paid them back.
Apparently, that wasn't successful.
1: https://www.nytimes.com/2017/08/04/business/dealbook/martin-...
https://www.justice.gov/usam/criminal-resource-manual-949-pr...
Yes, Shkreli is probably at best guilty of being guilty. But please don't mind me at all if I enjoy this feel good item just a little more than the usual story about someone being guilty of being poor.
fraud wrongful or criminal deception intended to result in financial or personal gain
stealing take (another person's property) without permission or legal right and without intending to return it
No, Shkreli didn't intend to steal their money since they gave it to him. However, he did in fact deceive them as to what he did with said money. So he was convicted of fraud.