David Kolesar

As one of our founders, Joe was appointed King’s Counsel in 1994 and a Fellow of the Chartered Professional Accountants of Alberta in 1995. He offers tax advice on a wide variety of matters, including resource tax, mergers and acquisitions and dispute resolution. An impactful leader, Joe guides our lawyers with active mentorship and mindful team building. Joe gives back to the community in a myriad of ways, both in an academic and volunteer capacity. He has taught at the University of A...

Tom is a leading practitioner in management-side labour and employment law with over 25 years of experience. Applying sound judgment, proactive strategies, and common sense, Tom has successfully represented employers in a wide range of complex and challenging matters. His continued success has earned him recognition from several leading industry guides as well as the respect of both colleagues and clients. With a focus on unionized workplaces, Tom advises and represents employers in labour ar...

Jessica A. MacDonald is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Family Law Mediation. Jessica A., 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 Jessica A. is held by other top lawyers in the same geographic and legal practice area.

Jim Lebo finds legal solutions that protect businesses. With his detailed knowledge of the people and the intricacies of the court system, he guides his clients through every step of the litigation process with skill and expertise. Jim handles corporate commercial litigation, appeals, and arbitrations. He has specialized expertise in appeals for complicated regulatory proceedings as well as an interest in constitutional litigation. His clients come to him for help with a range of issues in ma...

Elizabeth Burton is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Elizabeth, who practices law in Calgary, Alberta, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth is held by other top lawyers in the same geographic and legal practice area.

Ainsley Vieira is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Ainsley, who practices law in Calgary, Alberta, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Ainsley is held by other top lawyers in the same geographic and legal practice area.

Alex practices general commercial and civil litigation and advises clients with respect to a broad range of individual and corporate disputes, including contractual disputes, insurance matters, and tort-based claims. She also has extensive experience in construction matters, particularly with builders’ liens and delay claims. Alex has represented clients in the Alberta Court of Justice (formerly Provincial Court) and the Court of King’s Bench of Alberta, as well as in commercial a...

Shanlee’s practice is focused on securities and capital markets, mergers and acquisitions, private equity, start-ups, shareholder activism and corporate governance. Shanlee has a business-friendly, “get the deal done” mentality, enabling her to develop close and trusting business relationships while delivering practical, timely and high-value advice on an array of complex legal issues and transactions. Shanlee has extensive experience advising clients on domestic and cross-b...

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

Regina Corrigan is a partner in the Calgary office of the firm, head of the office's Business Law Department and practice group leader for its Intellectual Property Law Department. Regina's practice focuses on the areas of trademarks and technology commercialization. She has significant experience with all aspects of trademark law, including, prosecution, opposition, licensing and rights transfer in Canada. Regina also holds in-depth expertise in the commercialization and development of techn...