Bohdana Tkachuk

John is the former head of the firm's litigation practice. With degrees in both engineering and law, he practises in the areas of environmental law, litigation, and administrative law, and has appeared as counsel on matters in all levels of the courts in Ontario, and before several administrative tribunals, including the Environmental Review Tribunal, the Board of Directors of the College of Chiropractors of Ontario, the Commercial Registration Appeal Tribunal, the Law Society of Upper Canada...

Joanna is a partner at de VRIES LITIGATION LLP with extensive experience in estates, trusts, and capacity litigation. Joanna has a keen interest in issues regarding will challenges, dependant’s support, and power of attorney disputes. She has appeared before the Ontario Superior Court and the Ontario Court of Appeal. Joanna obtained her law degree from the Schulich School of Law at Dalhousie University after completing a Bachelor of Arts degree at McGill University. Joanna was called to...

Aaron Fransen is a partner in the Mergers & Acquisitions, Banking & Finance, and Projects & Infrastructure Groups. His practice focuses on M&A and the project finance of infrastructure and energy projects in the bond and bank markets. Aaron’s diverse clientele includes banks, securities dealers, technology companies, resource companies, media and telecom companies, government entities and private equity firms. Aaron is recognized as a leading lawyer by national and inter...

Bryan McLeese is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation. Bryan, who practices law in Toronto, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Bryan is held by other top lawyers in the same geographic and legal practice area.

Warren Kleiner is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Warren, who practices law in Toronto, Ontario, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Warren is held by other top lawyers in the same geographic and legal practice area.

Sean Vanderpol is a corporate partner in the Toronto office and a member of the firm’s Partnership Board. He is a member of the Management Committee, and the former Co-Head of the Capital Markets and Public Mergers & Acquisitions Groups in the Toronto office. He is also a member of the firm's Professional & Ethics Committee. His practice is focused on public companies, mergers and acquisitions and joint venture transactions, as well as public corporate finance transactions and p...

Lorraine Land practises Aboriginal and environmental law as a partner at OKT. She advises Aboriginal clients across Canada and particularly in the North. Lorraine provides negotiation advice and appears before Courts and tribunals on Aboriginal rights, land claims implementation, self government negotiation and implementation, consultation, impacts and benefits agreements, energy, and environmental matters. Lorraine has a Master's of Environmental Studies (with a concentration on northern Abo...

Dimitri Lascaris is a Siskinds partner and leader of Siskinds’ Securities Class Actions Group. Before joining Siskinds, Mr. Lascaris practiced securities law in the New York and Paris offices of a major Wall Street law firm. In August 2013, he was named by Canadian Business Magazine as one of the 50 most influential people in Canadian business, describing him as “the fiercest legal advocate for shareholder rights.” Mr. Lascaris is currently prosecuting numerous domestic and ...

Eleanor Somerleigh is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Eleanor, who practices law in Toronto, Ontario, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eleanor is held by other top lawyers in the same geographic and legal practice area.

David Chernos is a top attorney recognized by Best Lawyers in the practice area(s) of Alternative Dispute Resolution, Corporate and Commercial Litigation and Trusts and Estates. David, who practices law in Toronto, Ontario, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.