James O'Sullivan

Marcus is an award-winning family lawyer practicing in Alberta and British Columbia, honoured as one of Canada’s Top 25 Most Influential Lawyers and featured in Best Lawyers in Canada in 2024, 2025, and 2026. As the founder of both Crossroads Law and Coach My Case, he is recognized for disrupting the practice of law to provide a more client-centred legal experience while advocating for access to justice. Marcus is passionate about consensual dispute resolution. He believes that most fam...

Over the 20 years Tonii Roulston has been a member of the Calgary Bar Association, she has built her long-standing reputation as a tough criminal defence lawyer. Known for her strategic thinking, and effectiveness in the courtroom, she has represented a variety of challenging and high-profile cases. As a female lawyer, she holds an advantage in vigorously questioning female complainants on difficult details including their motivations to lie and inconsistencies in their accusations. Tonii is ...

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...

Michael Bolitho practises commercial real estate law, including commercial leasing (both on behalf of landlords and tenants), commercial acquisitions and dispositions, condominium development, real estate development, drafting and negotiating construction contracts, real estate advice on mergers and acquisitions, and real estate-based financing. He has had a leading role representing landlords and tenants on large commercial leasing transactions involving build-to-suit, office, retail and ind...

Karen's practice focuses on complex commercial, construction, and contract litigation and arbitration. Karen leverages her over 20 years’ of experience to advise clients on a broad range of complex litigation and arbitration disputes. Providing counsel to clients in the energy, agricultural, chemical and construction industries, she has been involved in the resolution of a variety of claims, including multi-party actions, contract disputes, estate litigation, product liability claims, a...

Katherine Rubin is an associate in Fasken’s Knowledge and Practice Innovation department, and works with the Banking and Finance group across the Firm. In this role, Katherine assists the Banking and Finance group by creating and locating resources and content to ensure the efficient and consistent delivery of high quality legal services, and by maximizing the group’s shared intellectual capital. Katherine has a broad range of experience in banking and finance law, and has represe...

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...

Prior to and during the course of attending University, Brad was involved in the residential construction industry. After obtaining his law degree in 1989, Brad articled and practiced with Code Hunter Wittmann. In 1998 he joined the litigation team at Donahue Wells as a partner. In 2010, Brad joined Carbert Waite LLP. Brad has extensive experience as a litigator in a number of areas (with an emphasis on insurance related litigation, product liability litigation, aviation, and commercial litig...

Jessie Larter is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Jessie, 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 Jessie is held by other top lawyers in the same geographic and legal practice area.

Practising extensively in the area of debt capital markets, Howard MacKichan's primary focus is on private placements by US and Canadian institutional investors in the Canadian energy and resources market. Funds have been placed in Canadian and US dollars, Euros and Pounds Sterling. Mr. MacKichan has been a fellow of the American College of Investment Counsel since 1992, one of only a few Canadian members, and was a member of the committee developing the ACIC's model form agreements. He has s...