William D. Hart

Lawyer, Partner - Montréal

Québec Bar 1979
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William Hart practices in the area of corporate and commercial law in the Montréal office of Langlois lawyers. He is head of the firm’s France-Québec practice group, an experienced team that provides business solutions adapted to the needs of French companies seeking to establish themselves in Quebec.

His background in management and his experience as Senior Vice President, General Counsel and Secretary of a large Quebec-based public company for several years allow him to better understand and advise large clients, including several well-known French companies.

William has a diversified practice with a concentration in mergers and acquisitions. He also works regularly in the area of compensation agreements for senior executives in change-of-control situations, and in this regard has been involved in some of the most important acquisitions over the last few years in Quebec.

These areas of practice have also allowed William to develop a deep understanding of corporate governance issues, on which he regularly advises his clients.


1978 – Bachelor of Civil Law, B.C.L., McGill University (Member of Editorial Board of McGill Law Journal)

1977 – Bachelor of Common Law, LL.B., McGill University (University Bursary; Wainwright Essay Prize)

1974 – Graduate of École supérieure des sciences économiques et commerciales (ESSEC) Paris, France, Recipient of bursary from French government

1970 – B.A. Economics, University of Saskatchewan

Rankings & Recognitions

Representative Work

  • Retrospective 2018 | 10 Successes for Langlois’ Transactional Group

    In 2018 Langlois was the law firm of choice of several major organizations for their mergers & acquisitions-related transactions. The transactional group at Langlois assisted important groups of businesses as well as foreign multinationals with several major projects, including strategic acquisitions, financings and equity investments. It was an interesting and active year rich in challenges for Langlois’ transactional group!

  • Retrospective of Langlois’ 10 Most Representative Mergers & Acquisitions Mandates of 2017

    The expertise of Langlois lawyers in the areas of technology, transportation, intellectual property, labour law, Northern development, environmental law and real estate law was called upon in several major and impactful mergers and acquisitions files that the firm handled in 2017.

Mergers & Acquisitions    
Acts on behalf of several major French companies in their acquisitions or legal affairs in Quebec, including Adecco, Somfy, Moulage Plastique de l’Ouest, Euralis and La Brosse & Dupont, Hérige (formerly VM Matériaux), Alsace Lait, Groupe Bolloré (Bathium et SDV Logistiques), Laboratoires Lehning, Accor Canada, Riou Glass, Groupe Alvest et Groupe APY.

Compensation of senior management in change-of-control situations    
Frequently acts on behalf of senior executives in their employment and equity incentive arrangements in the context of acquisitions of large companies such as Yellow Pages, Bombardier Recreational Products, CCM/The Hockey Company, Van Houtte and Air Canada Technical Services (ACTS).




Other Publications

2012 – Contributor: “Legal Aspects of Doing Business in North America” (Quebec Section), Release 1 – 2012, Juris Publishing, Huntington, New York, 2012, p. QU-1



2020 − « Doing Business in Quebec, opening a door into North America : The Law in Quebec and the Business Lawyer’s Role – Conference presented to  French companies seeking to Establish Themselves in Canada », with Guillaume François Larouche, National Bank Financial, Montréal

2011 – “Corporate Governance in Canada and in France” (Workshop Luncheon – French Chamber of Commerce in Canada)

2007 – “Free Trade in North America: Myth or Reality?” (North America Forum of the French Industrial Club (NAFIC) – How to stay competitive in North America).

2006 – “Selling and Distributing Products and Services in Canada” (Ubifrance Conference on NAFTA, Paris).

2005 – “NAFTA – A few observations and comments ten years later (Forum on French investments in Canada organized by the Canadian Embassy and the Quebec Delegation in Paris)”.

2004 – “Remuneration of CEO and Members of Board of Directors” (Federated Press).

Professional Associations

Since 2018 – Chairman of the Board of Directors of CIC Capital Canada Inc. and CIC Capital Ventures Inc.

Since 2018 – Member of the East Montreal Chamber of Commerce (CCEM)

2017-2018 – President of the French Chamber of Commerce and Industry in Canada (CCIFC)

1998-2009 and subsequently from 2017 to the present – Member of the Executive Committee of the CCIFC (Member of Board of Directors since 1996)

2004-2008 - Chair of the French Chamber of Commerce in Canada (Member of Board of Directors since 1996)

Since 2004 – Co-founder of the Forum for Venture Capital and Private Equity of the French Chamber of Commerce in Canada

2004-2007 – Member of the Executive Committee of the Union of French Chambers of Commerce and Industry Abroad (UCCIFE), Paris, France

1997-2020 – President of the Association of Essec Business School Graduates in Canada

Since 1993 – Canadian Bar Association

Since 1993 – Jury Member – International Admission Center for French Management Studies

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