Mark Sevestre is Haudenosaunee Mohawk and resides in the Six Nations of the Grand River First Nation Territory in Ontario.

Since 1999, Mark has served as the General Manager of the Mississaugas of the Credit First Nation Community Trust. Mark is an Advisory Board Member of the Tallgrass Institute (formerly First Peoples Worldwide) in the U.S.A., as well serves on the Mount Allison University Board of Regents. Mark is a Financial Trustee for the Louis Bernard Legacy Trust for the Madawaska Maliseet First Nation in New Brunswick. As a Founding Member of the National Aboriginal Trust Officers Association in 2006, Mark had led the Reconciliation and Responsible Investment Initiative in partnership with Share Canada which linked Indigenous Values to Indigenous Investing as well as helping Non-Indigenous Investors utilize their portfolios to achieve the goals of Reconciliation in Canada, from 2018 to 2024.

Mark has previously served as the Branch/Financial Services Manager for the Bank of Montreal and opened a full-service bank branch within the Onyota’aka (Oneida) First Nation near London, Ontario in 1995. Mark holds a Bachelor of Commerce Degree from Mount Allison University, NB (1991) and began his working career within the Federal Government and Coaching for the Mount Allison Mounties Football team.