James O'Sullivan

Catherine Grygar is a partner in the Real Estate Group. Over the course of her 10-year career at Stikeman Elliott, Catherine has advised on many of the most innovative and complex real estate and renewable energy developments and transactions across Western Canada. Her impressive track record includes acquisitions, dispositions, commercial leasing matters, development projects including mixed-use developments and strata-space subdivisions, real estate financings and environmental issues relat...

Chrysten Perry, KC, is Managing Partner of the Calgary office, Co-Head of the Energy Group and a member of the Partnership Board. She is a partner in the Commercial Energy, Corporate and Projects and Infrastructure Groups and has more than 30 years of experience practicing corporate and commercial law in the energy industry. Chrysten advises clients on a diverse array of energy-driven matters including joint ventures, private share and asset purchase and sale transactions, transportation, pro...

David Eeles has over 15 years’ experience representing project developers, sponsors, industrial hosts and other project participants in connection with the acquisition, development, construction, financing, operation, restructuring and disposition of energy, infrastructure and industrial projects, including renewable energy projects, power plants, cogeneration plants, heavy oil upgraders and public-private partnership projects. Mr. Eeles has acted as the lead lawyer on a number of such ...

Cheryl Rea is senior counsel in the Employment & Labour and Litigation & Dispute Resolution Groups. Her practice focuses on corporate commercial litigation and dispute resolution, employment and labour law, human rights and privacy. Cheryl represents clients in all areas of corporate commercial litigation and dispute resolution. In her labour and employment practice, Cheryl works with employers to litigate, mediate and resolve disputes relating to employment matters, human rights and ...

Marco is a skilled litigator who represents clients in a wide range of disputes. He applies his considerable experience before courts and administrative tribunals to successfully defend his clients’ best interests. Marco’s diverse practice includes commercial litigation, insurance and risk management, professional discipline, and municipal matters. He has significant experience litigating contractual disputes and negligence claims, routinely representing energy companies, engineer...

Robert Froehlich currently leads the business law group in our Calgary office and from 2016 to 2020 led our Canadian oil and gas practice. Robert advises domestic and international clients on a diverse range of corporate and commercial matters, with a specific focus on the energy industry. He provides practical and strategic advice to clients on transactions and projects across the energy sector, including on liquefied natural gas, conventional and unconventional upstream petroleum and natura...

Gordon Sterchi, KC articled with Dunphy Best Blocksom LLP in 2001 and became a partner in 2010. He practices in the area of family law as both a litigator and a mediator, as well as counsel for landowners in surface rights matters in Alberta. Gord is currently a member of the Calgary Flames Ambassadors and serves on their Board of Directors. He is also on the executive of the Calgary Bar Association and serves as the Vice President. He previously served on the Board of Directors with The Dist...

Ben Hudson is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law and Trusts and Estates. Ben, 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 Ben is held by other top lawyers in the same geographic and legal practice area.

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 ...

Sarah’s practice is focused on securities and capital markets, mergers and acquisitions, shareholder activism and corporate governance. Canadian and international corporations, underwriters and investors rely on Sarah for her practical, results-oriented approach to complex legal issues across a wide range of industries, including energy, oil and gas, mining, technology, life sciences and financial services. Sarah has extensive experience on domestic and cross-border corporate finance tr...