Director. Robert Bertram is a retired pension investment executive. He was the Executive Vice President of Ontario Teachers Pension Plan Board (Teachers) from 1990 to 2008. He led Teachers investment program and had oversight of the pension funds growth to $108.5 billion from $19 billion when it was established in 1990. Prior to that, he spent 18 years at Telus Corporation, formerly Alberta Government Pension Telephones. Before leaving Telus, he was Assistant Vice President and Treasurer.