The executive exodus at BlackBerry continues. CBC News reports that three more senior executives are on their way out the door at BlackBerry: Corporate information technology vice president Doug Kozak, global manufacturing and supply chain senior vice president Carmine Arabia, and service operations vice president Graeme Whittington. The company tells CBC News that it is “in the second phase of our transformation plan where we will be assessing our organization — from top to bottom — to ensure we have the right people in the right roles with the right skill sets to drive new opportunities in mobile computing.” Previous executive departures over the past month alone include David J. Smith, the executive who headed up the original BlackBerry PlayBook; T.A. McCann, who was in charge of all the company’s social networking efforts; and Marc Gingras, whose company was acquired by BlackBerry in 2011.