Colleen Johnston currently serves on the boards of Shopify, McCain Foods, Private Debt Partners and Q4. Colleen is chair of Unity Health Toronto, which includes St. Michael's Hospital, St. Joseph's Health Centre and Providence Healthcare; a member on the board of the Shaw Festival; and a member of the Dean’s Advisory Council at the Schulich School of Business. She previously served as the chair of Bridgepoint Health and the Heart & Stroke Foundation of Ontario.

Colleen Johnston retired from TD Bank Group in 2018. Prior to this, she was the Group Head Direct Channels, Technology, Marketing and Corporate & Public Affairs, TD Bank Group. Colleen served as TD’s Chief Financial Officer from 2005-2015. Prior to joining TD in 2004, she spent 15 years with Scotiabank in various senior finance positions. Colleen started her career at PwC in 1982. She received her CA designation in 1984 and in 2006 was elected an FCA (FCPA) recognizing her outstanding career achievements and dedication to community activities.

At TD, she was actively involved in promoting diversity and inclusion in the workplace as chair of the Women in Leadership Committee for ten years. In 2013, Colleen was awarded the Catalyst Canada Honors in the Business Leader Category. Colleen has received numerous top industry honors as a senior finance executive including Canada’s CFO of the Year in 2012. She was recognized by Women’s Executive Network as one of Canada’s Most Powerful Women three years in a row and inducted into Canada’s Most Powerful Women: Top 100 Hall of Fame in 2007. In 2011, for the third year in a row, she was named one of the 25 Most Powerful Women in Banking by American Banker. Colleen has received honorary degrees from St. Mary’s University and York University.