Melissa MacKewn

Practice Areas

Melissa has been widely recognized within the profession as one of Canada’s leading securities and corporate commercial litigation lawyers.

Melissa’s expertise is unique in that she acts on a wide range of securities regulatory matters before the OSC and CIRO (formerly, IIROC and the MFDA), both on the prosecution and defence side. Melissa routinely acts as counsel on compliance and registrant regulation matters and enforcement investigations, settlements and contested proceedings involving such issues as insider trading, disclosure violations and market manipulation. Melissa also acts as outside prosecution counsel on complex disciplinary matters before the Chartered Professional Accountants of Ontario and is regularly retained to advise on matters before other regulatory authorities across the country in the insurance and financial sectors.

Melissa maintains an active commercial litigation practice and has appeared before all levels of Court in Ontario. She advises investors, registrants, issuers, officers, directors, underwriters and private and public corporations on a variety of corporate and securities matters, including securities class action proceedings, corporate and shareholder disputes, oppression remedy matters, proxy battles, corporate governance matters, investment loss claims, breach of contract and professional negligence matters. Melissa’s significant expertise on disciplinary regulatory matters, as both prosecutor and defence counsel, allows her to strategically advise her professional clients in the complex context of concurrent civil and regulatory proceedings.