A Canadian flag waves in front of a Blackberry logo at the Blackberry campus in WaterlooBlackBerry Ltd mentioned on Monday that two high executives have been departing and a 3rd used to be replaced in a extensively anticipated shake-up following this month's naming of a new chief government, and that more changes were coming. The troubled smartphone maker, primarily based in Waterloo, Ontario, mentioned Kristian Tear, its chief working officer, and Frank Boulben, its chief advertising officer, will go away. James Yersh will exchange Brian Bidulka as chief financial officer. BlackBerry additionally said Roger Martin, a board member since 2007, has resigned.