David Lederman

Oren Weinberg of Boulby Weinberg LLP is a seasoned family law lawyer with over 18 years of experience. He has a deep understanding of all family law matters, including negotiating agreements, representing clients in court, and facilitating amicable resolutions. Oren specializes in child and spousal support, property division, custody, and parenting time issues. Oren is a qualified mediator and arbitrator with extensive training in dispute resolution. He has received certification from the Fam...

Stephen Aylward is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law and Appellate Practice. Stephen, who practices law in Toronto, Ontario, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen is held by other top lawyers in the same geographic and legal practice area.

Imran Ahmad is a senior partner and the Canadian head of technology and Canadian co-head of cybersecurity and data privacy. He is based in our Toronto and Montreal offices and is recognized as a leading cybersecurity and privacy lawyer by several legal directories. Imran advises clients across all industries on a wide array of technology-related matters, including outsourcing, cloud computing, SaaS, strategic alliances, technology development, system procurement and implementation, technology...

Ruth Kalnitsky Roth is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Ruth, who practices law in Toronto, Ontario, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ruth is held by other top lawyers in the same geographic and legal practice area.

Cathy serves as the Chief Executive Officer and a partner at OKT. Her practice is focused on advancing Aboriginal and treaty rights through litigation and negotiation. Cathy has represented clients in applications and actions in Ontario and Manitoba, as well as in federal court and at the Supreme Court of Canada. She has also represented Indigenous clients in proceedings and tribunals regarding election processes, labour and employment, and environmental assessment. Cathy provides negotiation...

Stephen Green is one of the two Senior Partners at Green and Spiegel and is Certified as a Specialist in Immigration Law by The Law Society of Ontario. Stephen has been practising immigration law for 30 years and has extensive experience in all areas of Canadian immigration. Stephen has been identified for many years as a leading practitioner in immigration law. Stephen is considered a subject matter expert in the field, frequently asked to speak as a panelist, moderator and lecturer. Stephen...

Julie K. Hannaford is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Julie K., who practices law in Toronto, Ontario, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Julie K. is held by other top lawyers in the same geographic and legal practice area.

Sean Stevens is Co-Leader of the Firm’s Capital Markets and Mergers & Acquisitions (CM and M&A) Group and the Chair of the Ontario Region’s Business Law Group. His practice is focused on domestic and cross border mergers and acquisitions, private equity transactions, corporate reorganizations and infrastructure projects. Clients include public and private companies, private equity funds and their investors, business owners and project sponsors and financers. For two decade...

Mary Kelly practises business law, and has considerable experience relating to company, banking and regulatory requirements as applied to private mergers and acquisitions, secured lending, corporate reorganizations and business joint ventures. Her diverse experience in private mergers and acquisitions includes advising financial institutions on divestiture options for non-core businesses and implementing successful international auction sales on behalf of multinational clients, including thos...

Tina Yang helps people leverage the legal system to seek justice when their rights have been violated, whether as workers, consumers, investors, or simply humans. This includes prosecuting class actions and mass torts to address collective wrongs, as well as a diverse range of other civil litigation. Tina’s class action experience is noteworthy for its breadth, as she has achieved successes for clients in cases relating to: Charter breaches & state accountability, institutional abus...