Blackberry-maker Research In Motion says co-chief executives Mike Lazaridis and Jim Balsillie have stepped down in shake-up ... WATERLOO, Ontario (Reuters) - Research In Motion's Mike Lazaridis and Jim Balsillie have bowed to investor pressure and resigned as co-CEOs and co-chairmen, handing the top job to an insider with four years at the struggling BlackBerry maker ... WATERLOO, Ontario (Reuters) - Research In Motion's Mike Lazaridis and Jim Balsillie have bowed to investor pressure and resigned as co-CEOs, handing the top job to an insider with four years at the struggling BlackBerry maker ... The two founders and chief executives of Research in Motion, the makers of BlackBerry smart phones, have quit ... LONDON (Reuters) - Takeover talk swirled around Research In Motion on Monday as investors and analysts pondered whether new Chief Executive Thorsten Heins had been appointed to lead a turnaround of the struggling phonemaker or prepare it for sale ... Jan. 23 - Research In Motion's Mike Lazaridis and Jim Balsillie are resigning as co-CEOs, handing the top job to insider Thorsten Heins ... Jan. 23 - Research in Motion's Mike Lazaridis and Jim Balsillie have bowed to investor pressure and resigned as co-CEOs as the maker of BlackBerry struggles to regain momentum in the ultra-competitive smartphone market it once dominated. Andrew Potter reports ... Blackberry-maker Research In Motion (RIM) has said its co-chief executives Mike Lazaridis and Jim Balsillie have stepped down in a shake-up ... Jan. 23 - Research in Motion's co-CEOs bow to investor pressure and resign as the maker of BlackBerry struggles to regain momentum in the ultra-competitive smartphone market it once dominated. Andrew Potter reports ... | 
