The Board of Directors (the “Board”) is responsible for overseeing the management and the business and affairs of AltaGas Canada Inc. and believes that good governance improves performance and benefits all Shareholders. Accordingly, the Board is committed to a high standard of governance. The responsibilities of the Board and each of its committees are set out in written mandates and other key governance documents. For the key governance documents, see Constating Documents and Governance Documents.
AltaGas Canada's Board is currently comprised of seven directors:


  • Gregory A. Aarssen, MBA, JD
    Gregory AarssenC 
    Gregory A. Aarssen, MBA, JD
    Independent Lead Director (1) (4)

    Mr. Aarssen is an entrepreneur and independent businessman. He has been the President of Aarssen Management Services Inc. since 1997. Mr. Aarssen was Co-President Gas of AltaGas Ltd. from 2010 until his retirement in 2012. During his tenure with AltaGas Ltd., he also held the roles of Vice President Corporate Affairs and Vice President Energy Management. Mr. Aarssen was the Vice President and Principal of PremStar Energy Canada Ltd. from 1996 until it was acquired by AltaGas Ltd. in 2004.

    Mr. Aarssen holds a Bachelor Science (Honours) from the University of Western Ontario and a Master of Business Administration degree and Juris Doctor from the University of Windsor.


  • Judith Athaide, MBA
    Athaide Judith WEB
    Judith Athaide, MBA
    Independent Director (2) (3) (4)

    Ms. Athaide is a Professional Engineer. She is the President of The Cogent Group Inc. and has been since 1999. Ms. Athaide held a variety of senior commercial and technical roles in the energy industry, including Vice President, Bow Engineering and Project Execution of EnCana Leasehold Limited Partnership from 2006 to 2009, as well as academic positions at the University of Alberta, Brandon University, University of Calgary, and Mount Royal College. Ms. Athaide is currently a director of HSBC Canada, Computer Modelling Group Ltd, New Brunswick Power, and PHX Energy Services Corp.

    Ms. Athaide holds a Bachelor of Science degree in Mechanical Engineering and a Masters of Business Administration degree, both from the University of Alberta, and a Bachelor of Commerce degree from the University of Manitoba. She is a member of the Institute of Corporate Directors.


  • Amit Chakma, Ph.D
    Amit ChakmaC
    Amit Chakma, PH.D
    Independent Director (2) (3)

    Mr. Chakma is a Professional Engineer. He is a Professor of Chemical Engineering, and the President of the University of Western Ontario. Prior thereto, Mr. Chakma was Vice President (Academic) and Provost, and a Professor of Chemical Engineering at the University of Waterloo from 2001 to 2009. Since 1992, he has been a Professor of Engineering, including Environmental, Chemical and Petroleum, at a number of Canadian Universities. Mr. Chakma has been a director of the Canadian Scholarship Trust since 2013 and serves on the audit committee of a non-profit organization. He also served on the Government of Canada’s Science and Technology Innovation Council from 2012 to 2017.

    Mr. Chakma holds holds a Ph.D. in Chemical Engineering and a Master of Applied Science, Chemical Engineering, both from the University of British Columbia. He also holds a Diplom-Ingenieur in Chemical Engineering, Gas Engineering Specialization from the Institut Algerien du Petrole, Algeria. Mr. Chakma is a member of the Association of Professional Engineers, Geologists and Geophysicists of Alberta and the Institute of Corporate Directors.



  • William J. Demcoe, MBA, CA
    Demcoe Bill Web
    William J. Demcoe, MBA, CA
    Independent Director (2) (3)

    Mr. Demcoe is a Chartered Accountant and independent businessmen. He has been President of Willbren & Company Ltd. since 1993. He has over 30 years’ experience as an executive officer, including positions with Maryn International Ltd., Alberta Natural Gas Ltd, and Alberta & Southern Gas Ltd., Consolidated Pipelines Ltd, and Consolidated Natural Gas Company Ltd. Mr. Demcoe was also an instructor at the University of Calgary, Faculty of Business and has past board experience.

    Mr. Demcoe holds Master of Business Administration from the University of Chicago. He is a member of Financial Executives International and the Institute of Chartered Professional Accountants of Alberta.


(1) Nominee of AltaGas Ltd.
(2) Member of Audit Committee, chaired by Mr. Demcoe.
(3) Member of Compensation and Governance Committee, chaired by Mr. Chakma.
(4) Member of Environment, Health and Safety Committee, chaired by Ms. Athaide.