J. Sébastien A. Gittens

Laura Warner is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative and Public Law and Corporate and Commercial Litigation. Laura, who practices law in Calgary, Alberta, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Laura is held by other top lawyers in the same geographic and legal practice area.

Karen Pirie, KC is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law, Medical Negligence and Professional Malpractice Law. Karen, who practices law in Calgary, Alberta, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Karen is held by other top lawyers in the same geographic and legal practice area.

Patrick Laycock is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Patrick, 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 Patrick is held by other top lawyers in the same geographic and legal practice area.

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...

Matthew Longstaff has extensive experience advising investment banks, sovereigns, private equity houses and corporate clients in a broad range of cross‑border debt financings, including high‑yield bonds, leveraged bank finance, syndicated and bilateral bank financings, project financings, convertible and exchangeable bonds, sovereign bonds, hybrid capital issuances, consent solicitations, and securitizations, as well as advising on restructurings and in distressed debt scenarios. In addition,...

Lindsey Galvin is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Lindsey, 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 Lindsey is held by other top lawyers in the same geographic and legal practice area.

Steve R. Will is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Steve R., 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 Steve R. is held by other top lawyers in the same geographic and legal practice area.

Katherine Prusinkiewicz is the knowledge lawyer for the Calgary office, working to leverage the practice's collective wisdom to ensure efficiency and uniform quality. She supports lawyers in our business law group with model documents and precedents, legal updates, training and other information needs and assists in our client communication program. As a result of our knowledge management initiatives and the practice’s culture of contributing and sharing knowledge, our clients can expec...

Enrique has over 18 years of experience helping clients navigate family law disputes with clarity and confidence. Before becoming a lawyer, he was a high school teacher—an experience that still shapes his approach to his legal practice today. Whether guiding clients through the legal process or advocating in court, Enrique brings the heart of a teacher to everything he does. Clients meeting with Enrique can always expect a bit of “homework.” He believes strongly that clients...

Peter practices primarily in the areas immigration and citizenship law. As a Canadian immigration law practitioner, Peter has prepared and filed all types of immigration and temporary status applications. This includes federal skilled worker, Canadian Experience Class, family class sponsorships (spouses, children, and parents), business class, provincial nominations, special programs, and humanitarian and compassionate applications for permanent residence. Peter's practice includes the prepar...