Peter L. Roy is the firm’s senior litigation counsel and is a founding partner in Roy O’Connor LLP. Peter is very experienced in all aspects of civil litigation involving both individual and class proceedings. He has particular expertise in complex corporate commercial and securities litigation, shareholder and derivative actions, Director and Officer Duties and Responsibilities, mining related litigation and Class Actions. He has been recognized by Benchmark Canada as a National Securities Litigation Star and an Ontario Securities and Class Action Litigation Star.

David F. O’Connor is one of the founding partners in Roy O’Connor LLP. Prior to founding the firm, David was a partner in a large national law firm in Canada. His practice is focused on corporate/commercial/shareholder and class action litigation.

David is a highly regarded litigator. David was most recently recognized by Benchmark Canada (the guide to Canada’s leading litigators) as a litigation star in class actions and commercial litigation in both 2012 and 2013, with peer praise and respect for his “prowess” in both areas. In 2006, he was recognized by LEXPERT as a finalist for the top 40 under 40 ranking in Canada. David and his partners were previously featured in the Canadian Bar Association National Magazine and recognized as one of the best class action firms in the country, with an undeniable track record for excellence. At the same time, David and his partners were further recognized as a stellar example of lawyers making a difference.

Sean M. Grayson is a partner at Roy O’Connor LLP. He practices all aspects of corporate/commercial, civil and class actions litigation. He has considerable experience advising clients in large and complex commercial litigation matters and class actions.

Sean has diverse experience in matters involving general corporate and shareholder disputes, directors and officers duties and responsibilites and indemnities, securities litigation, mining disputes, negligence and contractual disputes, financial institutions, investment advisors disputes, employment disputes, executive compensation, administrative law and both plaintiff and defence class actions.

Most recently Sean was named a Future Star (2013) by Benchmark Canada.

J. Adam Dewar is a partner in the firm and his practice focuses on both plaintiff and defence side class actions and commercial litigation. Adam was named a “Litigation Star” by Benchmark magazine in 2019, 2020, 2021, 2022, 2023 and 2024. In the area of class actions he is part of the firm’s counsel team [...]

Robert Spiegel is counsel to Roy O’Connor. Robert has extensive experience in securities law, M&A, corporate finance and regulatory advocacy.  Over the past seven years Robert has acted on joint retainers with the firm on administrative proceedings involving the SEC, OSC, TSX Venture Exchange, IIROC and on related civil litigation.  Robert was previously counsel at [...]

James Katsuras is an associate at Roy O’Connor LLP. His developing practice focuses on plaintiff and defence side class actions, corporate/commercial and civil litigation. In 2017, James obtained his JD/JD dual degree from the University of Windsor and the University of Detroit Mercy, where he graduated Magna Cum Laude and received Book Awards for highest [...]