Department profile
McCarthy Tétrault LLP

White-Collar Crime & Government Investigations

Canada Guide 2026 : Nationwide - Canada

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McCarthy Tétrault LLP

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About

Provided by McCarthy Tétrault LLP

With decades of experience in criminal trials, McCarthy Tétrault is uniquely positioned among Canadian law firms to represent individuals and companies in connection with serious criminal investigations and prosecutions.

McCarthy Tétrault combines extensive criminal trial expertise with the depth and sophistication required to handle the most complex litigation. The advocacy, judgment and resources that McCarthy Tétrault delivers to clients involved in criminal investigations and prosecutions are unparalleled.

As a national firm with deep experience in cross-border matters and specialists in all key practice areas, we excel in handling complicated investigations from the earliest stages. We have proven expertise in responding to law enforcement and regulators, gathering and assessing evidence, and managing cases involving many witnesses and massive volumes of electronic documents and data.

Chambers Review

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White-Collar Crime & Government Investigations - Nationwide - Canada

Band 1

What the Team is Known For

McCarthy Tétrault possesses a market-leading litigation team which is well known for its involvement in white-collar cases, particularly in its Toronto and Montréal offices. The firm's white-collar defence and investigations team is recognised for the strength of its client portfolio and the depth of its bench, and is identified for its prevalence in anti-corruption and securities-related issues, as well as criminal competition matters, foreign corrupt practices, economic sanctions, tax evasion and insurance fraud. Its lawyers are frequently credited as a dominant force in professional discipline defence and prosecution, and known for their international reach and multi-jurisdictional capabilities. The firm's client list includes notable individuals and corporations in the finance sector, in addition to a number of Crown corporations.

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Work Highlights

Provided by Chambers

  • McCarthy Tétrault defended HGrégoire International against penal accusations from the regulator in respect of alleged misleading selling tactics.

Strengths

Provided by Chambers

  • McCarthy's partners are extremely knowledgeable and provide tremendous service.

    White-Collar Crime & Government Investigations respondentCanada

  • McCarthy Tétrault is able to advise on both civil and criminal legal issues. The team has extensive experience communicating with law enforcement, regulators and other public bodies.

    White-Collar Crime & Government Investigations respondentCanada

  • The firm has a very experienced team in this area. It provides excellent service and expert advice.

    White-Collar Crime & Government Investigations respondentCanada

  • McCarthy stands out for its legal skills, investigative experience and in-house discovery capabilities.

    White-Collar Crime & Government Investigations respondentCanada

  • The team is extremely responsive and efficient, and its business acumen is great.

    White-Collar Crime & Government Investigations respondentCanada

Notable Practitioners

Provided by Chambers

  • Andrew Matheson
    Andrew Matheson

    Andrew Matheson

    Andrew Matheson is renowned for the breadth of his experience, covering corporate investigations and compliance, criminal defence and professional disciplinary proceedings. He heads McCarthy Tétrault's national white-collar and investigations group from Toronto.

    • Andrew is a total pro who has all of the expertise and knowledge required.

      White-Collar Crime & Government Investigations respondentCanada

    • Without fail, Andrew has a deep understanding of his clients' needs and interests.

      White-Collar Crime & Government Investigations respondentCanada

    • He is a very experienced, sophisticated lawyer with excellent judgment.

      White-Collar Crime & Government Investigations respondentCanada

    • Andrew Matheson is at the top of his game.

      White-Collar Crime & Government Investigations respondentCanada
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  • Julie-Martine Loranger
    Julie-Martine Loranger

    Julie-Martine Loranger

    Julie-Martine Loranger of McCarthy Tétrault's Montréal office specialises in commercial litigation, with specific expertise in securities litigation and internal investigations. She also has extensive experience in white-collar crime and government investigations, being frequently called upon by politicians to represent consumer interests before a Québec agency.

    • Julie-Martine thinks outside of the box. She is an incredibly effective lawyer.

      White-Collar Crime & Government Investigations respondentCanada

    • The level of sophistication, commercial awareness and general client service that Julie-Martine provided was outstanding in all respects.

      White-Collar Crime & Government Investigations respondentCanada
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  • Shane D'Souza
    Shane D'Souza

    Shane D'Souza

    Shane D'Souza is the Co-Head of McCarthy Tétrault’s securities litigation group and is based in Toronto. His practice focuses on advising clients in complex securities and corporate litigation, as well as directing high-profile internal investigations into regulatory breaches, financial irregularities, and workplace misconduct across multiple jurisdictions and sectors.

    • Shane is thorough and provides considered advice to his clients.

      White-Collar Crime & Government Investigations respondentCanada

    • Shane's instincts and vision are superb.

      White-Collar Crime & Government Investigations respondentCanada

    • Shane D'Souza is smart, thoughtful and focused. He is sensitive to intricacies that come up in investigations.

      White-Collar Crime & Government Investigations respondentCanada
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  • Natalie V Kolos
    Natalie V Kolos

    Natalie V Kolos

    Natalie Kolos is a highly rated associate who enjoys a strong reputation for her regulatory enforcement practice, often acting for corporate and individual clients in criminal and securities matters.

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Ranked Individuals at McCarthy Tétrault LLP (4)

Nationwide - Canada

  • Profile image of Andrew Matheson

    Andrew Matheson

    White-Collar Crime & Government Investigations

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  • Profile image of Julie-Martine Loranger

    Julie-Martine Loranger

    White-Collar Crime & Government Investigations

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  • Profile image of Shane D'Souza

    Shane D'Souza

    White-Collar Crime & Government Investigations

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  • Profile image of Natalie V Kolos

    Natalie V Kolos

    White-Collar Crime & Government Investigations

    View profile

Members

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