Board of Directors

Five independent directors and two non-independent directors bring diverse backgrounds and experience to the board. For more information on the board members, view their biographies.


In this article

Board of Directors

David Cornhill


Mr. Cornhill is a director of AltaGas Ltd., and is the chairman of the board of directors of TriSummit Utilities Inc. (formerly AltaGas Canada Inc.), a privately owned corporation. Mr. Cornhill is a founding shareholder of AltaGas (and its predecessors). He was chief executive officer of AltaGas from 1994 to 2016 and served as interim co-chief executive officer from July to December 2018. Prior to forming AltaGas, Mr. Cornhill served in various capacities with Alberta and Southern Gas Co. Ltd, including vice-president, finance and administration, treasurer and president and chief executive officer. Mr. Cornhill is an experienced leader in the business community and is a strong supporter of communities and community collaboration, investment and enhancement. He is a member of the Ivey Advisory Board at Western University. Mr. Cornhill holds a BSc (Hons.) degree and a MBA degree from Western University, and he was awarded an honorary Doctor of Laws degree by the University in 2015.

Brad Corson


Mr. Corson was appointed chairman, president and CEO of Imperial Oil Limited on January 1, 2020.

Mr. Corson started his career with Exxon Company, USA in 1983 as a project engineer and has held a wide variety of technical, commercial and managerial assignments primarily in the upstream, but also in the downstream and human resources.  He spent the first twenty-one years of his career based in the U.S. with assignments in Louisiana, California, Texas and Virginia before relocating overseas. 

In 2004, Mr. Corson moved to Hong Kong as manager of Hong Kong Power and chairman of CAPCO, ExxonMobil’s Joint Venture in the power industry.  In 2007, Mr. Corson returned to Houston, Texas as vice-president of New Business Development for ExxonMobil Gas & Power Marketing Company with global responsibility for commercializing ExxonMobil’s major gas resources and pursuit of new opportunities.

From 2009 to 2014, Mr. Corson was based in London as chairman and production director of ExxonMobil International Limited where he had responsibility for ExxonMobil’s oil & gas production activities in Europe and Caspian regions.  He also served as ExxonMobil’s lead country manager for the United Kingdom during this period.

In 2014, Mr. Corson returned to Houston, Texas as vice-president of ExxonMobil Upstream Ventures and in March, 2015, was appointed president of ExxonMobil Upstream Ventures and a vice-president of Exxon Mobil Corporation.

Mr. Corson is a native of Woodstock, Illinois, U.S.A., and earned a Bachelor of Science degree in chemical engineering from Auburn University.

Matthew Crocker


M.C. (Matt) Crocker is Senior Vice President of Fuels at ExxonMobil Fuels & Lubricants Company since September 2020. He is responsible for the Downstream Global Fuels Value Chain, from crude to customers. 

Mr. Crocker joined Esso Petroleum Company in 1995 at the Fawley Refinery in the UK and held a number of positions in technical and supervisory roles.

Mr. Crocker has also held leadership positions within the Upstream, Chemicals and Manufacturing. In 2005, Matt transferred to Fairfax, Virginia where he progressed through a number of positions within Refining & Supply and ExxonMobil Chemical Company. In 2012, Matt became Baton Rouge Refinery Process Manager and in 2014 he was appointed Baytown Refinery Manager. In October 2016, Matt assumed the position of Project Executive on the Downstream Reorganization Project before becoming the Vice President Intermediates, ExxonMobil Chemical Company in April, 2017.

Prior to his current position, Mr. Crocker was Vice President, Strategy & Portfolio Management, covering the full scope of ExxonMobil’s Upstream business.

Mr. Crocker was born in Cuckfield, England and earned a Master’s degree in Chemical Engineering from Cambridge University.

Krystyna Hoeg


Ms. Hoeg was the president and chief executive officer of Corby Distilleries Limited from 1996 until her retirement in February 2007. She previously held several positions in the finance and controllers functions of Allied Domecq PLC and Hiram Walker & Sons Limited. Prior to that, she spent five years in public practice as a chartered accountant with the accounting firm Touche Ross. She is currently a director of New Flyer Industries Inc. and is also a director of Revera Inc., Arterra Wines Canada Inc., Duo Bank of Canada and Duo Financial Corporation, privately owned corporations. Ms. Hoeg is a past chair of the board of the Michael Garron Hospital.

Miranda Hubbs


Ms. Hubbs is currently an independent director of Nutrien Ltd. and PSP Investments (Public Sector Pension Investment Board). Ms. Hubbs serves as vice-chair of the board of the Canadian Red Cross. Prior to retirement in 2011, Ms. Hubbs was executive vice president and managing director of McLean Budden, one of Canada’s leading investment managers. Ms. Hubbs holds a BSc from Western University and an MBA from Schulich School of Business at York University and is a CFA charterholder. Ms. Hubbs serves on the ICD Climate Strategy Advisory Board and the Global Risk Institute Sustainable Finance Advisory Committee, holds the Fundamentals of Sustainability Accounting credential from the Sustainability Accounting Standards Board, and has received her CERT Certificate in Cybersecurity Oversight issued by the Software Engineering Institute at Carnegie Mellon University.

Jack Mintz


Dr. Mintz is currently the President’s Fellow at the University of Calgary’s School of Public Policy, a position he has held since July 2015. Dr. Mintz also serves on the board of Alberta Health Services and is the Senior Fellow at the C.D. Howe Institute, Distinguished Fellow at the MacDonald-Laurier Institute and Research Fellow at the International Tax and Investment Center (Washington D.C.). From 2006 to 2015, Dr. Mintz was the founding Director and Palmer Chair in Public Policy for the University of Calgary, and from 1999 to 2006, he was the president and chief executive officer of the C.D. Howe Institute. Prior to 2007, he also held professor positions at Queen's University and the Joseph L. Rotman School of Management at the University of Toronto. Dr. Mintz also has published widely in the fields of public economics and fiscal federalism, has been an advisor to governments on fiscal matters, and has frequently published articles in national newspapers and magazines. Dr. Mintz received the Order of Canada in 2015.

David Sutherland


In July 2007, Mr. Sutherland retired as president and chief executive officer of the former IPSCO, Inc. after spending 30 years with the company and more than five years as president and chief executive officer. Mr. Sutherland is the chairman of the board of United States Steel Corporation and director of GATX Corporation. Mr. Sutherland is also chairman of Graham Group Ltd., an employee owned corporation. Mr. Sutherland is a former chairman of the American Iron and Steel Institute and served as a member of the board of directors of the Steel Manufacturers Association, the International Iron and Steel Institute, the Canadian Steel Producers Association and the National Association of Manufacturers. 

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