He previously pleaded guilty to illegally providing a client with market-sensitive information about a significant discovery by a Perth-based diamond exploration company.
The 21st edition of the exhibition has transformed Cottesloe Beach into a sprawling outdoor gallery, featuring 70 sculptures by artists from eight countries.
According to the FBI, investigators arrested 10 people across several states while an 11th suspect, who had previously been deported to India, was also charged.
