MD, CHIEF ACCOUNTING OFFICER Zook Brian D converted options into 16,737 units of Class A Common Shares, covered exercise/tax liability with 4,813 units of Class A Common Shares, converted options into 33,475 units of Class C Common Shares and covered exercise/tax liability with 9,608 units of Class C Common Shares, increasing direct ownership by 162% to 75,355 units (SEC Form 4)