David Leith has taking over as the new chair at Manitoba Telecom Services Inc., replacing Thomas Stefanson who retired Jan. 8. First elected to the MTS board in 2009, Leith brings more than 25 years of experience at CIBC World Markets, and has extensive expertise in mergers and acquisitions and financing. Leith was deputy chairman and managing director of CIBC World Markets and head of the firm's Investment, Corporate and Merchant Banking activities until February 2009. He held various senior executive positions at CIBC World Markets in Toronto and London, England. Leith's relationship with MTS dates back to the company's privatization in 1997. He currently is retained as adviser to the Minister of Natural Resources on the restructuring of Atomic Energy of Canada Limited.