The young man broke into the museum, which is a former hospital for the insane, on multiple times in September 2013.
A museum worker said possibly 1,000 pieces were stolen as well as the copper piping from the building.
According to reports in the Indy Star, he was flogging his bizarre takings on social media.
Charles had a Facebook status update posted on October 14 2013 stating: “Yo I got a bunch of human brains in jars for sale hmu for details u know u want one for Halloween.”
According to a police report, the total value of glass jars containing the human tissue was valued at approximately £3,175.
Charles was arrested in December 2013 after a San Diego man who bought six jars of brain material for £397 on eBay alerted police, according to court documents.