About
Executive Leadership

Andy Trewick
President & Chief Executive Officer
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Tim Heavenor
Chief Financial Officer & Executive Vice President, Development
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Tony Clark
Chief Legal & Risk Officer
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Tony oversees a range of services including risk management, legal, communications, supply chain management, ethics and compliance, and corporate secretarial. He is also chair of Graham’s Enterprise Risk Management Committee and Secretary to Graham’s Board of Trustees. Tony joined Graham in 2008 serving initially as General Counsel. Prior to this, he was Counsel to an international engineering, project management and construction firm. Tony holds a Bachelor of Arts degree from the University of Calgary and a Bachelor of Laws degree from the University of Alberta.

Jeremy Klarenbach
Executive Vice President, Infrastructure & Industrial
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With more than 20 years of multidisciplinary project experience, Jeremy has advanced steadily since joining Graham’s Saskatoon office in 2004. He has led major industrial, power, and infrastructure programs across Canada, earning recognition for his performance, team leadership, and commitment to safety. His work includes directing complex, multi-year initiatives involving significant technical, environmental, and community considerations. He holds a diploma from Sask Polytech’s Civil Engineering Technology program and now serves as Executive Vice President, Infrastructure & Industrial, bringing a decisive, people-focused approach to building high-performing teams and advancing Graham’s strategic priorities.

Richard Ellis-Smith
Executive Vice President, Buildings Canada
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Richard is an established industry leader with over 30 years of experience in construction. Earning his degree in Construction Management and starting his career in the UK, Richard then relocated to Canada, progressing through roles from Field Engineer, Operations Manager, District Manager and leading to his appointment as Executive Vice President. Richard brings a balance of both regional business and major project experience in markets across Canada, including working on projects in manufacturing, high-rise development, hospitals, and buildings that formed part of the 2010 Vancouver Olympic infrastructure.

Thomas Grell
Executive Vice President, Services
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Thomas brings nearly 30 years of progressive leadership experience across multiple industries including Chemicals, Life Sciences, Renewables, Mining, and Oil & Gas. With a master’s degree in mechanical engineering and business administration from the Technical University of Hamburg in Germany, complemented by his service in the German Navy, Thomas has demonstrated a strategic mindset and a strong focus on business and project success, safe delivery, client relationships, and profitability. Prior to joining Graham, Thomas held key leadership positions with ABB and AMEC/Wood plc, where he led billion-dollar businesses globally.

Blake Christian
Executive Vice President, Buildings U.S.
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Blake Christian has more than 30 years of experience leading complex building projects across North America and internationally. He currently serves as Executive Vice President of Graham’s Buildings U.S. Division, overseeing operations across multiple markets including advanced technology, commercial, healthcare, life sciences, civic, residential, and education. His experience spans highly technical project delivery and global procurement, including work supporting the U.S. Embassy in Berlin. At Graham, Blake focuses on strategic growth, operational performance, developing people, and strengthening client partnerships while advancing the integration of new technologies and delivery approaches across the business.
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Kathy McLeod
Chief Information Officer
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Kathy brings more than 25 years of leadership experience delivering enterprise transformation and technology strategies that align business objectives with long-term growth and operational performance. Throughout her career, she has led large-scale business modernization initiatives focused on improving productivity, enabling better decision-making, and maximizing value through digital capabilities and integrated systems. Prior to joining Graham, Kathy held senior leadership roles with J.D. Irving, Samuel, Son & Co., and LafargeHolcim. As Chief Information Officer, Kathy leads Graham’s technology strategy to advance integration, scalability, innovation, and connected business operations across the organization.

Mike Court
Chief Health & Safety, Quality and Sustainability Officer
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With 30 years of experience across the construction, mining, energy and oil and gas sectors, Mike has extensive experience leading health, safety, environment, quality and sustainability programs for major capital projects. Prior to joining Graham in 2009, he held senior leadership positions with Suncor Energy and Syncrude Canada, overseeing health, safety and environmental management systems and risk management. Since joining Graham, Mike has progressed through increasingly senior leadership roles, strengthening operational processes, risk management practices, and organizational accountability. Appointed Chief Health & Safety, Quality and Sustainability Officer in 2026, he provides executive leadership in these areas while overseeing the development and implementation of institutionalized processes and management systems to strengthen operational performance and continuous improvement. Mike is a founding member and Board Chair of the Construction Safety Research Alliance (CSRA) at the University of Colorado, and a founding member of the Canadian Construction Safety Council (CCSC) and Canadian Construction Sustainability Alliance (CCSA). He holds an Occupational Health and Safety Technology diploma from BCIT and has completed executive programs at Queen’s Smith School of Business and NYU Stern.
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Carolynne Laughy
Chief People Officer
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Carolynne brings over 25 years of leadership experience in human resources, labour relations and general management, having built and led high-performing teams across diverse business environments. Throughout her career, she has held both corporate services and operational leadership roles with organizations including PTW, AECOM and Flint Energy Services. Her expertise includes workforce planning, labour relations, talent management, compensation and benefits, and organizational transformation. As Chief People Officer, Carolynne oversees Graham’s people strategy, aligning programs, services and workplace culture with the needs of the business and its employees.
Board Members
Brian Shelton
Colorado, USA
Chair of the Board of Trustees
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John Connolly
Alberta, Canada
Trustee
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Martin Travers
Missouri, USA
Trustee
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Martin Travers is an Independent Trustee of Graham with more than 43 years of experience in the construction and engineering industry. He spent his career with Black & Veatch Corporation, where he served on the Board of Directors and held senior executive roles including Business Unit President and Group President, overseeing infrastructure focused businesses across telecommunications, power, and environmental markets. Mr. Travers currently serves on the boards of Canadian Fiber Optics Corporation and Vantage Point Solutions and holds a Bachelor of Civil Engineering from Rensselaer Polytechnic Institute.
Mary Hemmingsen
British Columbia, Canada
Trustee
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A Chartered Professional Accountant, Ms. Hemmingsen previously held positions as a partner at KPMG and executive positions at Brookfield and BC Hydro where she led business development and project development activities respectively in the infrastructure and energy sectors. She sits on the Boards of several major companies including InstarAGF Asset Management and The Crossing Group. Ms. Hemmingsen completed the Harvard Business School Executive Management Program and earned a Bachelor of Business Administration Degree from Simon Fraser University. She joined the Board at Graham in October 2020.
Stuart O’Connor
Alberta, Canada
Trustee
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Mr. O’Connor is the President of Timber Ridge Capital Ltd., a private holding and investment company. He is a former Partner at the law firm of Bennett Jones, a national law firm, the former Chairman of the Board of Flint Energy Services Ltd., a public oilfield service company and the former President and CEO of Merak Projects Ltd., an international software company. He has also co-founded and served in various capacities with companies in the oil and gas, financing, real estate and technology industries. Mr. O’Connor is also active in the community and currently serves on the Board of Governors of Hull Services and on various committees with the Calgary Stampede including having served as the Co-chair of the Centennial Committee celebrating the 100th Anniversary of the Calgary Stampede. Stuart joined the Board at Graham in July 2015.