Angela Barreto

Katherine Ratcliffe is a trusted advisor to high-net-worth individuals, families, and business owners on their estate, trust, and tax matters. She develops sophisticated, client-centric planning strategies that reflect legal precision, practical insight, and a deep understanding of clients’ particular objectives. Katherine’s practice focuses on complex estate planning, trust and corporate structuring, business succession, and post-mortem tax planning. She regularly prepares bespok...

Jeffrey D. Wise K.C. is a lawyer recognized by Best Lawyers in the practice area of Family Law. Jeffrey D. practices law in Calgary, Alberta Best Lawyers has recognized Jeffrey D. Wise K.C. since 2025. 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 Jeffrey D. Wise K.C. is held by other lawyers.

Katherine Stys is a lawyer recognized by Best Lawyers in the practice areas of Health Care Law and Medical Negligence. Katherine practices law in Calgary, Alberta Best Lawyers has recognized Katherine Stys since 2021. 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 Katherine Stys is held by other lawyers.

Aaron Martens, KC is a family law practitioner, mediator, arbitrator and Registered Collaborative Family Lawyer. He joined Dunphy Best Blocksom LLP in 1998 and is a partner in the firm. Aaron’s experience in family law matters includes being counsel on a wide variety of family and special chambers applications. He has represented clients in trials at Provincial Court and the King's Counsel, and has made appearances at the Court of Appeal of Alberta. Aaron also does adoption work. Aaron ...

Shane is a partner in the Litigation & Dispute Resolution group where he advises clients–individuals, small businesses, and corporations–on litigation and contractual issues, including: corporate litigation employment agreements and contract negotiation severance package determination and review construction contracts and defects holdbacks and builders’ liens debt recovery, bankruptcy, and insolvency regulatory applications He has appeared before all levels of court in A...

Lauren Barteluk is a lawyer recognized by Best Lawyers in the practice areas of Health Care Law, Labour and Employment Law, Medical Negligence and Personal Injury Litigation. Lauren practices law in Calgary, Alberta Best Lawyers has recognized Lauren Barteluk since 2027. 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 Lauren Barteluk is held by other lawyers.

Kristian A. Duff is a lawyer recognized by Best Lawyers in the practice areas of Insurance Law and Medical Negligence. Kristian A. practices law in Calgary, Alberta Best Lawyers has recognized Kristian A. Duff since 2026. 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 Kristian A. Duff is held by other lawyers.

Colin is a partner in the Calgary office of Lawson Lundell. He is a member of the firm’s Business Law, Corporate Commercial, Corporate Finance & Securities and Mergers & Acquisitions Groups. His practice covers a broad range of commercial transactions, including the structuring and implementation of share and asset acquisitions, mergers, financings, and corporate reorganizations involving strategic acquirers, investors, vendors, entrepreneurs, family business owners, family offi...

Tanya A. Frizzell is a lawyer recognized by Best Lawyers in the practice areas of Insurance Law and Personal Injury Litigation. Tanya A. practices law in Calgary, Alberta Best Lawyers has recognized Tanya A. Frizzell since 2022. 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 Tanya A. Frizzell is held by other lawyers.

Gulu Punia is a leading commercial and employment litigator in Alberta, representing clients at all levels of Court in Alberta, including as lead counsel at trial before the Court of Queen's Bench. From shareholder disputes and oppression remedies, to fraud claims and claims for breach of contract, Gulu acts for clients in obtaining extraordinary remedies such as attachment orders and Anton Piller orders in cases involving fraud.