

Partner at Blake, Cassels & Graydon LLP
Stephen R. Ashbourne is a distinguished partner at Blake, Cassels & Graydon LLP, focusing on securities and commercial law. With over 30 years of practice experience, Steve is recognized for his in-depth expertise in structured finance, derivatives transactions, and capital markets/trading regulation. He offers clients comprehensive advice that spans tax, insolvency, regulatory, market, accounting, and cross-border considerations.
Steve has played a pivotal role in numerous high-profile Canadian transactions involving securitization, derivatives, structured products, and electronic trading. Renowned for his ability to design, “Canadianize,” and implement complex financial products and strategies, he serves both domestic and cross-border markets with unparalleled proficiency.
His experience covers a broad array of structured finance matters, including novel structures for commodities such as oil, uranium, and diamonds, as well as fleet leasing, railcars, aircraft, and stranded costs. He has led notable M&A transactions involving securitized portfolios and is widely recognized as a leading legal expert in auto, credit card, consumer loan, equipment leasing, and fintech applications.
In the derivatives sphere, Steve’s practice focuses on both OTC and retail derivatives-based transactions and trading strategies, with particular experience in equity derivatives and related regulatory developments. He is trusted by clients for his leading advisory roles in the ongoing development of Canada’s securities laws concerning asset-backed securities (ABS) and derivatives.
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