Lisa Mantello

Lisa Mantello is an experienced transactional lawyer who is recognized for her fresh perspective and creativity in solving problems for her clients. Lisa practices in all areas of financial services with particular expertise in domestic and cross-border financing transactions, private credit, structured finance and derivatives.

She brings to the table a wealth of practical knowledge from being involved in some of the most complex and dynamic transactions of the last decade in the Canadian finance market. She is Canadian counsel for the International Swaps and Derivatives Association (ISDA). Her work with ISDA includes drafting and publishing the Netting and Collateral opinions for the Canada, Ontario, Alberta, British Columbia and Québec jurisdictions, which are relied upon by ISDA members and Canadian derivatives market participants from around the world.

Lisa is consistently recognized as a leading lawyer by the Canadian Legal Lexpert Directory in the area of derivatives, Best Lawyers in Canada in the area of banking and finance and as Highly Regarded by IFLR 1000 in the areas of banking and finance, derivatives and financial restructuring. Recently, Lisa was named one of the Top 25 Most Influential Lawyers in Canada for 2023. Each year, the Canadian Lawyer’s Top 25 Most Influential Lawyers list recognizes an individual’s efforts to help shape the law and contribute to the strength and quality of legal services. Lawyers who are selected often contribute to the most nationally significant and strategic legal questions, cases, deals, and disputes.

Lisa has been appointed to the Collateral Infrastructure and Market Practices Advisory Group by the Bank of Canada. This group, comprising key capital market participants, provides guidance on the structure of the Canadian repo market. Lisa’s expertise will not only contribute to the development of a robust financial infrastructure but also serve to enhance Osler’s ongoing relationship with the Bank of Canada. Lisa’s appointment reflects the firm’s deep involvement and influence within the Canadian financial legal landscape.