Marc Massie

Craig Gillespie is a founding partner of Cuming & Gillespie LLP . He is a leading personal injury, class action, and medical malpractice lawyer with a proven track record of success. With decades of experience representing clients throughout Western Canada, he has secured multi-million dollar settlements and verdicts in complex cases. Craig has been consistently recognized for his exceptional work, including being named medical malpractice lawyer of the year. Beyond his legal practice, Cr...

Shannon Hayes, KC, practices commercial litigation and arbitration and is the Leader of the Litigation & Dispute Resolution Group in the firm’s Calgary office. She has been practicing for more than 20 years in dispute resolution and has a broad range of experience on commercial and business dispute matters, working with companies in a wide range of industries, including energy, power, real estate, and technology. Shannon has appeared as counsel before all levels of court in Alberta ...

Shannon is an innovative and high-performing litigation and regulatory lawyer with over 20 years of experience advising clients on complex commercial and regulatory matters. Her practice focuses on resolving difficult business disputes in the commercial, energy and power sectors. She has extensive experience managing large, complex litigation, regulatory and administrative matters in the electricity and oil and gas industries, where organization, accountability, effective communication and ov...

Allison Sears is a regulatory litigator and a member of Fasken’s Global Energy and Climate Group in Calgary. Her practice focuses primarily on energy and environmental matters. With experience before all levels of court in Alberta, Allison also represents clients in arbitrations, mediations, and regulatory proceedings before various federal and provincial regulators including the Canada Energy Regulator, the Alberta Energy Regulator, the Alberta Utilities Commission, the Environmental A...

Brad Hayden is a senior business lawyer. He has an extensive background in leadership, management, strategic and operational planning, organizational transformation and change management, client relationship management, business operations, governance and communication. Brad practises business law, with a focus on the energy and transportation industries. He works with businesses involved in mergers, acquisitions, divestitures and financings, domestic and cross-border reorganizations, corpora...

Tamasine Davies has been a family law lawyer for over 30 years. Tamasine is the Managing Partner at Soby Boyden Lenz. She has been with Soby Boyden Lenz since 1994. Tamasine earned her Bachelor of Arts from the University of Alberta in 1991. She attended Dalhousie University, in Nova Scotia, Halifax from 1991 to 1994 earning her Law Degree. Her past work experience includes legal research on Aboriginal Treaty Rights and issues and facilitating Confederacy and Chiefs’ Conferences. Tamasi...

Mylène D. Tiessen is a top attorney recognized by Best Lawyers in the practice area(s) of Class Action Litigation, Insurance Law and Medical Negligence. Mylène D., who practices law in Calgary, Alberta, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mylène D. is held by other top lawyers in the same geographic and legal practice area.

Sandra's international experience, multi-lingual fluency, and nuanced understanding of dispute resolution uniquely inform her approach to family law. Trained and experienced in negotiation and mediation, Sandra believes in resolving family law disputes in a solution-focused, efficient, and non-adversarial manner. Where necessary, Sandra engages in targeted litigation and has argued successfully in the Provincial Court of Alberta, the Court of Queen's Bench, and the Court of Appeal. Sandra art...

Caireen Hanert is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law and Corporate and Commercial Litigation. Caireen, who practices law in Calgary, Alberta, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Caireen is held by other top lawyers in the same geographic and legal practice area.

PROFESSIONAL EXPERIENCE: Mr. Halt graduated as the gold medal recipient from the University of Saskatchewan in 1986 and in 1988-89 he had the honour of serving as a law clerk to Madam Justice Bertha Wilson of the Supreme Court of Canada. Following his clerkship, Mr. Halt relocated to Calgary and has since practised civil litigation, including insurance with an emphasis on professional liability, corporate commercial litigation, securities litigation, franchise litigation, insolvency, construc...