Heather L. Treacy, KC., ICD.D.
About Heather L. Treacy, KC., ICD.D.
Heather L. Treacy, KC., ICD.D. is a lawyer based in Calgary, AB and has been recognized in The Best Lawyers in Canada™ since 2012. Heather L. Treacy, KC., ICD.D. is recognized in the following practice areas:
- Calgary, Alberta
- Aboriginal Law / Indigenous Practice
- Alternative Dispute Resolution
- Energy Law
- Labour and Employment Law
- Natural Resources Law
- Oil and Gas Law
- Product Liability Law
- Transportation Law
Current Firm: DLA Piper (Canada) LLP
Location: Calgary, AB
It takes just a few minutes to optimize your profile for prospective clients and lawyers ready to refer.
Log in to your account or continue as a guest to view annual subscription pricing.
Nearby Lawyers
Gail Black’s tax-based private client services practice focuses on trusts and estate planning and administration including Wills, substitute decision-making, various trusts, charitable planning and probate matters. As an active member of both the BC and Alberta Law Societies, she also advises on cross-provincial estate planning and administration matters. Working with US counsel, she assists clients on the tax-effective planning and administration of estates with US components including...
Krysta Ostwald earned her B.A. in 1993 and her LL.B. in 1996, both from the University of Victoria. She articled with Fraser Milner and was called to the Alberta Bar in 1997. Since then she has practiced exclusively in the area of family law. Krysta worked with the firms of Laurie Allen & Associates, Turnbull Boyes and Soby Boyden Lenz, before creating Widdowson Kachur Ostwald Menzies LLP with her partners. Krysta emphasizes resolving disputes without unnecessary conflict. She utilizes ma...
Doak Horne is an experienced IP litigation and patent lawyer. A partner in Gowling WLG's Calgary office with over 35 years' experience and over seven full trials and 40 reported decisions before the Federal and provincial (Alberta and Ontario) Courts, having further successfully settled numerous other actions on behalf of clients. Has prepared, filed, and successfully prosecuted hundreds of patents and trademarks before Canadian and US Intellectual Property Offices. Doak is a registered paten...
Jason advises clients on a broad range of corporate matters, including financing, mergers and acquisitions, private equity, start-ups and corporate governance. He regularly acts for both institutional investors and corporations on complex transactions, including share and asset acquisitions, reorganizations, and financings. Jason is the Co-Leader of the Emerging Technology and Venture Capital Group for the Alberta region and has experience advising clients in the technology and innovation sec...
Alex Kotkas is Managing Partner of the Alberta Region, with primary responsibility for leadership of the Firm’s Calgary and Tsuut’ina offices. As Regional Managing Partner, Alex manages the region's operations while developing and executing its strategic direction. His leadership focuses on cultivating a supportive environment that prioritizes exceptional client service, drives innovation, and nurtures outstanding talent. Alex is the founder and former leader of the Firm’s L...
Clint Suntjens is a lawyer recognized by Best Lawyers in the practice areas of Insurance Law and Personal Injury Litigation. Clint practices law in Calgary, Alberta Best Lawyers has recognized Clint Suntjens 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 Clint Suntjens is held by other lawyers.
Brent focuses his practice on business and personal tax planning, leading projects for restructuring, split-ups, acquisitions, asset divestitures and financings. He represents clients in tax disputes, representing clients before the Canada Revenue Agency, Department of Justice and Department of Finance. From the Alberta Government to the Institute of Chartered Accountants, Brent has worked with a variety of government, industry and volunteer organizations to improve tax laws. For the past 30 ...
Connor Kense practises corporate and commercial law, with a focus on mergers and acquisitions, corporate finance and securities law. Connor regularly advises clients on cross-border as well as domestic transactions. He also assists clients with corporate governance, continuous disclosure, regulatory compliance and general corporate matters.
John is a partner at Felesky Flynn in Calgary, Alberta. He focuses on corporate and international tax planning and frequently assists clients in dispute matters. John holds dual qualifications as a lawyer and CPA in Alberta and previously served as a tax practitioner in Australia for many years. He graduated with honours from the University of Melbourne with a double degree in Law and Commerce and currently teaches tax law at the University of Calgary. Before joining Felesky Flynn, John pract...
Arif is a commercial litigator based in Calgary. He has appeared at all levels of court in both Alberta and Saskatchewan, as well as at the Supreme Court of Canada. Arif has experience in international arbitration and before administrative boards, including the Sport Dispute Resolution Centre of Canada. Arif has represented large multinational corporations, product manufacturers, entrepreneurs, professional athletes, national sports organizations, franchisees and franchisors, general contract...
Explore and Learn
What AI Visibility Means for Lawyers
by Josh Rupall and Bryan Driscoll
AI tools increasingly interpret lawyers public information. Clear, consistent and credible sources help ensure they describe legal expertise accurately.
The Best Lawyers in Canada 2027: Recognizing the Nation's Top Legal Talent
by Jamilla Tabbara
Honoring established leaders and rising practitioners across Canada's legal profession.
Recognizing Legal Leaders: The 2027 Best Lawyers Awards in Australia, Japan and Singapore
by Jamilla Tabbara
Market drivers, diversity trends and the elite practitioners shaping the legal landscape.
2027 Best Lawyers Awards: Honoring Excellence in the Legal Profession
by Jamilla Tabbara
Recognizing the outstanding attorneys leading top practice areas nationwide.
Musk v. Altman: The Lawyers Behind the Case
by Jamilla Tabbara
Meet the Trial Lawyers Shaping One of AI's Biggest Legal Disputes.
Announcing the 2027 Best Lawyers Awards: Austria, Germany and Switzerland
by Jamilla Tabbara
Celebrating the legal professionals throughout Central Europe.
The Legal Teams Behind the Blake Lively–Justin Baldoni Settlement
by Grace Greer
A closer look at the legal teams and attorneys involved in the Blake Lively–Justin Baldoni litigation and its resolution.
The Best Lawyers in France 2027: Peer-Reviewed Excellence
by Jamilla Tabbara
Seventeen editions of peer trust, a growing profession and a dynamic legal market.
Rules on Gifting Money to Family: What to Know
by Bryan Driscoll
Generosity often runs ahead of paperwork. Here's how to give to loved ones without surprising the IRS, your estate plan or your relationships.