Chairman of the BoardMr. Letwin has been a member of the ONEnergy board since 2013. He’s been President and Chief Executive Officer of Mancal Corporation since February 2020. Mr. Letwin has been a member of the Mancal Board of Directors since Mancal’s inception in 1999. Prior to Mancal, Mr. Letwin was President and Chief Executive Officer of IAMGOLD Corporation for over nine years and was also a member of their Board of Directors. Prior to joining IAMGOLD, Mr. Letwin was Executive Vice-President, Gas Transportation & International of Enbridge, Inc. and was based in Houston, Texas. While with Enbridge, he had overall responsibility for Enbridge Energy Partners, L.P. and its U.S. Operations.
Mr. Rattee has served as a director of the corporation since 2010. He’s been the Chairman, President and Chief Executive Officer of CIGL Holdings, a private investment holding company, since 1992. During his career, Mr. Rattee has served as a Chief Executive Officer, Chief Financial Officer, a Director and Chair of the Audit Committee of a number of public companies in Canada and the United States. He’s a Graduate of the BComm program at McGill University in Montreal and earned a Chartered Accountant designation from the Quebec Institute. Elsewhere, he received an MBA from the Richard Ivey School of Business at the University of Western Ontario.
Mr. Silber has served as a Director of the corporation since 2010. Mr. Silber is a Corporate/Commercial Lawyer and Partner practicing with the law firm Kelly Santini LLP in Ottawa. Mr. Silber specializes in corporate/commercial law with particular expertise in income tax, estates and succession planning. He advises clients on a broad range of business matters. These include private equity investors in domestic equity and debt financings, mergers and acquisitions, licensing transactions, corporate reorganizations, purchase and sale transactions, joint ventures as well as complex commercial agreements. Mr. Silber has been an instructor in the Business Law section of the Ontario Bar Admission Course. He currently teaches real property law for the Ontario Real Estate Association. Elsewhere, he volunteers his time with several community organizations and has served on several boards.