Mark Lewis

Mark joined Det’on Cho in 2019 as Chief Financial Officer before becoming Chief Operating Officer in early 2022 and President and CEO in May 2023. Mark’s focus during his tenure has included implementing a continuous improvement program for operational excellence and driving strategic investments to maximize growth and diversify Det’on Cho’s businesses.
Over his 15 years in the North, Mark has developed significant experience with Northern companies, including leadership roles in finance and accounting for a local airline, a diamond mine, and a Western Canada-based accounting firm. Mark has also served as an auditor for various non-profit, government, and private businesses.
Mark serves as Treasurer of the Northwest Territories and Nunavut Construction Association and has served on boards of several Yellowknife-based non-profits.
Mark has a business degree from Memorial University in Newfoundland. He lives in Yellowknife with his wife, their two sons, and their dogs, and he enjoys cycling, golfing, running, and travelling in his free time.