Vaughan Bowen allegedly sold millions of Vocus shares in light of a potential takeover by EQT Infrastructure being cancelled. : Vaughan Bowen allegedly sold millions of Vocus shares in light of a potential takeover by EQT Infrastructure being cancelled. The Australian Securities and Investments Commission has charged former Vocus chair Vaughan Garfield Bowen for allegedly performing insider trading after he sold millions of the company's shares just prior to the announcement it had failed to be acquired for the third time in as many years.