From Globe and Mail, about their methodology:
Launched in 2019 by The Globe and Mail, the program ranks participating private and public Canadian businesses on three- year revenue growth. Canada’s Top Growing Companies is a voluntary program. We accepted entries from businesses through May 31, 2020.
Applicant companies had to submit a ballot, complete a full application survey and supply supporting financial documentation to our research team for both 2016 and 2019. We evaluated companies based on the most recent fiscal year for which financial statements were available, with a latest possible year-end date of April 30, 2020. In some unique cases, companies were evaluated on calendar years instead of fiscal.
In order to qualify, a company had to have at least $2 million in annual sales in its most recent fiscal year. Companies had to be for-profit, Canadian-run, headquartered in Canada and independent. In rare cases in which applicant companies were recently acquired, they were admitted only if the acquisition occurred following the close of the companies most recent fiscal year.