Manitoba Telecom Services Inc. today announced that board chair Thomas Stefanson will retire from his position January 8, 2010, and will be replaced by David Leith. Stefanson has served as a member of the MTS board since June 1988, and became chair in August, 1989. Leith was first elected to the MTS board in 2009 and also serves on the audit committee. He brings more than 25 years of experience at CIBC World Markets, and has extensive expertise in mergers and acquisitions and financing. Leith was deputy chair and managing director of CIBC World Markets and head of the firm's investment, corporate and merchant banking activities until February 2009.