Sarah Fagan

John D. Leslie is a lawyer recognized by Best Lawyers in the practice area of Insolvency and Financial Restructuring Law. John D. practices law in Toronto, Ontario Best Lawyers has recognized John D. Leslie since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John D. Leslie is held by other lawyers.

Jordan joined the Gluckstein team in 2012 to undertake his articles-at-law. He graduated from York University in 2007 and earned his Juris Doctor degree from Bond University in Australia. He completed his Canadian Accreditation in 2012. After being called to the bar in 2013, Jordan became an associate lawyer at Gluckstein Lawyers . His practice focuses on personal injury litigation for plaintiffs, encompassing motor vehicle accident claims , class action and mass tort litigation , and product...

Barry Segal is a tax lawyer in our Toronto office. He has a diverse tax practice that includes public and private M&A, debt restructurings, corporate finance, corporate reorganizations, structuring private equity investments, advising domestic and cross-border investment funds, and international tax planning for Canadian and foreign corporations. Barry also acts as counsel on federal and provincial tax audits and appeals.

David is a founding partner in Roy O’Connor LLP, a litigation boutique in Toronto. He was previously a partner in a large national law firm. His practice is focused on commercial and class action litigation (both defence and plaintiff side). He was recognized as a finalist by Benchmark Canada for Class Action Litigator of the Year in 2015 and again in 2017, and for plaintiff counsel of the year in 2019, 2020 and 2021. He has been consistently recognized by Benchmark Canada as a litigati...

Alex specializes in matters related to capacity, guardianship, and power of attorney. He has often been appointed as counsel for individuals alleged to be incapable in high-conflict capacity-related disputes, showcasing his dedication to the rights of vulnerable individuals. Alex serves as the co-CPD liaison for the Elder Law Section and is a member-at-large of the OBA Trusts and Estates Section Executives of the Ontario Bar Association. Additionally, he is an active member of the Mental Heal...

Paul Tushinski CS is a lawyer recognized by Best Lawyers in the practice areas of Insurance Law and Personal Injury Litigation. Paul practices law in Toronto, Ontario Best Lawyers has recognized Paul Tushinski CS since 2006. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Paul Tushinski CS is held by other lawyers.

Roberto Tomassini is a partner, and the Department Head of the Koskie Minsky’s Pension and Employee Benefits and Tax Group. He has specialized expertise in all areas of pension and benefits law as well as the taxation and tax compliance relating to pension, employee benefit plans, training funds and various non-profit organizations. Roberto has extensive experience advising sponsors and trustees of health and welfare trusts and employee life and health trusts (ELHTs). Roberto has profic...

Ethan Campbell is a Partner in the firm’s Financial Services Specialty Group. He maintains an active financial services practice focusing on banking and finance transactions. Ethan advises Canadian and international banks, financial institutions, non-bank lenders, private equity firms and corporate borrowers on all aspects of corporate lending, including syndicated and bilateral transactions, acquisition financing, asset-based lending, real estate financing, wholesale automotive financi...

Susan Sack is a lawyer recognized by Best Lawyers in the practice areas of Family Law, Insurance Law, Legal Malpractice Law and Trusts and Estates. Susan practices law in Toronto, Ontario Best Lawyers has recognized Susan Sack since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Susan Sack is held by other lawyers.

John Mastoras is a senior partner in our Canadian employment and labour law group, and acts exclusively for employers. He is known to clients as a passionate and dedicated labour lawyer. He regularly litigates and provides strategic advice in connection with labour arbitrations, labour relations board disputes, collective bargaining negotiations, human rights proceedings, occupational health and safety charges, workplace insurance, labour injunctions and common law employment actions. His pra...