Dentons Executive and Leadership Team

September, 2026

Leadership Overview

Dentons has 10 executives leading key functions including regional strategy, operational management, financial oversight, and information technology.

Committed to navigating complex legal landscapes, Dentons delivers comprehensive legal solutions to businesses and governments worldwide while maintaining a robust international presence across diverse global markets.

Leadership Roles at Dentons

  • Africa Chief Executive Officer and Chairperson Tunisia - Mohamed Zaanouni
  • Global Vice Chair and ASEAN Chief Executive Officer - Gerald Singham
  • Australian Chair and Chief Executive Officer, Australasia - Amber Warren
  • Chief Executive Officer (Canada) - Tim Haney
  • Chief Executive Officer (US) - Sonia Martin
  • Interim Chief Financial Officer - Nicholas Willmott
  • Chief Operating Officer - Michael Arnold
  • Chief Operating Officer & Partner - Mark Flanagan
  • Global Chief Information Officer - Shane Mercer
  • Deputy Director - Emma Rigby
  • Mohamed Zaanouni - Africa Chief Executive Officer and Chairperson Tunisia

    Mohamed Zaanouni, the Africa Chief Executive Officer and Chairperson Tunisia at Dentons, directs all legal operations and strategic growth initiatives across the African continent. Zaanouni architects high-level partnerships with government entities and private corporations to expand the firm's footprint in emerging markets. By leveraging deep regional expertise, the Africa Chief Executive Officer and Chairperson Tunisia ensures that legal services align with the complex regulatory requirements of diverse jurisdictions. Mohamed Zaanouni manages cross-border legal mandates, facilitating seamless collaboration between local teams and the broader global network. This leadership role involves identifying new business opportunities while maintaining the highest standards of professional integrity. Through the implementation of localized growth strategies, the Africa Chief Executive Officer and Chairperson Tunisia drives sustainable development and strengthens the firm's competitive position within the competitive legal landscape of the region.

    Gerald Singham - Global Vice Chair and ASEAN Chief Executive Officer

    Gerald Singham, the Global Vice Chair and ASEAN Chief Executive Officer at Dentons, oversees the strategic direction and operational excellence of the firm throughout the ASEAN region. Singham architects integrated legal solutions that address the unique challenges of an interconnected marketplace, ensuring that clients receive consistent, high-quality counsel. As the Global Vice Chair and ASEAN Chief Executive Officer, Singham coordinates with international leadership to align regional objectives with the firm's global mission. This role involves managing complex multi-jurisdictional transactions and fostering relationships with key stakeholders across the business-to-business sector. Gerald Singham drives innovation in service delivery, optimizing internal processes to enhance client outcomes. By focusing on market expansion and talent development, the Global Vice Chair and ASEAN Chief Executive Officer secures the firm's reputation as a premier legal provider in the region, ultimately contributing to the overall success of the global organization.

    Amber Warren - Australian Chair and Chief Executive Officer, Australasia

    Amber Warren, the Australian Chair and Chief Executive Officer, Australasia at Dentons, manages the firm's comprehensive legal practice and strategic growth across the Australasian market. Warren architects initiatives that enhance service delivery for businesses and government clients, ensuring alignment with the firm's global standards. As the Australian Chair and Chief Executive Officer, Australasia, Warren oversees the integration of diverse practice areas to provide holistic legal solutions in a complex regulatory environment. This leadership role involves driving operational efficiency and fostering a culture of excellence among legal professionals. Amber Warren coordinates with the global board to implement long-term growth strategies that capitalize on regional market opportunities. By prioritizing client-centric approaches and maintaining rigorous professional standards, the Australian Chair and Chief Executive Officer, Australasia, strengthens the firm's market position and ensures the delivery of high-impact legal expertise across the entire region.

    Tim Haney - Chief Executive Officer (Canada)

    Tim Haney, the Chief Executive Officer (Canada) at Dentons, directs the firm's legal operations and strategic initiatives throughout the Canadian market. Haney architects robust legal frameworks that support the diverse needs of businesses and government entities, ensuring that the firm remains a leader in the legal sector. As the Chief Executive Officer (Canada), Haney oversees the execution of growth strategies that leverage the firm's international resources to provide local expertise. This role involves managing internal performance metrics and fostering collaboration across various practice groups to deliver seamless legal solutions. Tim Haney drives operational excellence by optimizing resource allocation and promoting professional development within the Canadian offices. By focusing on client satisfaction and market responsiveness, the Chief Executive Officer (Canada) ensures that the firm maintains a competitive edge, providing essential legal support in an increasingly complex and interconnected business environment.

    Sonia Martin - Chief Executive Officer (US)

    Sonia Martin, the Chief Executive Officer (US) at Dentons, leads the firm's legal practice and strategic development within the United States. Martin architects high-level growth strategies that address the complex legal needs of businesses and government clients in the region. As the Chief Executive Officer (US), Martin oversees the firm's US operations, ensuring that legal services are delivered with precision and excellence. This role involves managing key client relationships and fostering a culture of innovation within the US offices. Sonia Martin coordinates with the global leadership team to align US operations with the firm's international mission. By focusing on market expansion and the development of specialized practice areas, the Chief Executive Officer (US) drives the firm's success in the competitive US legal market. Through strategic leadership and a commitment to client service, Martin ensures that the firm remains a trusted partner for complex legal matters.

    Nicholas Willmott - Interim Chief Financial Officer

    Nicholas Willmott, the Interim Chief Financial Officer at Dentons, oversees the firm's financial health, budgeting, and fiscal strategy. Willmott architects financial frameworks that support the firm's global operations, ensuring that resources are managed effectively to sustain growth. As the Interim Chief Financial Officer, Willmott monitors financial performance across all regions, providing critical insights to the executive team for strategic decision-making. This role involves managing financial reporting, risk assessment, and capital allocation to ensure the firm's long-term stability. Nicholas Willmott works closely with the board to maintain fiscal discipline while supporting the firm's commitment to providing high-quality legal services. By focusing on financial transparency and operational efficiency, the Interim Chief Financial Officer ensures that the firm remains well-positioned to navigate the complexities of the global legal market, ultimately supporting the firm's mission to deliver comprehensive legal solutions to its diverse client base.

    Michael Arnold - Chief Operating Officer

    Michael Arnold, the Chief Operating Officer at Dentons, manages the firm's internal infrastructure and operational systems to ensure seamless service delivery. Arnold architects scalable processes that support the firm's global legal practice, focusing specifically on internal efficiency and resource management. As the Chief Operating Officer, Arnold oversees the integration of administrative functions to support the firm's diverse practice areas. This role involves collaborating with the executive team to implement strategic initiatives that improve operational performance and reduce overhead. Michael Arnold drives the adoption of new technologies and methodologies that enhance the firm's ability to serve clients in a complex marketplace. By focusing on internal scaling and operational stability, the Chief Operating Officer ensures that the firm maintains a strong foundation for growth, allowing legal professionals to focus on delivering high-quality counsel to businesses and government clients across the globe.

    Mark Flanagan - Chief Operating Officer & Partner

    Mark Flanagan, the Chief Operating Officer & Partner at Dentons, directs the firm's supply chain logistics and operational procurement strategies to support global legal operations. Flanagan architects robust systems that manage the firm's physical and digital assets, ensuring that legal teams have the necessary tools to provide comprehensive services. As the Chief Operating Officer & Partner, Flanagan oversees the optimization of operational workflows, focusing on cost-effectiveness and service reliability. This role involves working with the partnership to align operational capabilities with the firm's long-term strategic objectives. Mark Flanagan drives initiatives that improve the firm's logistical efficiency, ensuring that resources are allocated effectively across international offices. By focusing on supply chain management and operational infrastructure, the Chief Operating Officer & Partner supports the firm's ability to deliver consistent legal solutions, ultimately contributing to the firm's overall market impact and operational success.

    Shane Mercer - Global Chief Information Officer

    Shane Mercer, the Global Chief Information Officer at Dentons, architects the firm's scalable cloud infrastructure and digital security systems to support global legal operations. Mercer directs the implementation of advanced technology solutions that enhance data protection and streamline communication across international offices. As the Global Chief Information Officer, Mercer oversees the firm's digital transformation initiatives, ensuring that technology aligns with the needs of legal professionals and clients. This role involves managing complex IT projects and collaborating with the executive team to drive innovation in service delivery. Shane Mercer ensures that the firm's technological infrastructure remains resilient and secure in an increasingly digital marketplace. By focusing on cloud-based solutions and cybersecurity, the Global Chief Information Officer supports the firm's ability to provide secure, efficient, and high-quality legal services, ultimately contributing to the firm's overall success and market competitiveness.
    Shane Mercer

    Emma Rigby - Deputy Director

    Emma Rigby, the Deputy Director at Dentons, supports the executive leadership team in managing the firm's operational and administrative functions. Rigby architects internal processes that streamline legal service delivery, ensuring that the firm operates with maximum efficiency across its global locations. As the Deputy Director, Rigby coordinates cross-departmental projects that align with the firm's strategic goals and mission. This role involves monitoring operational performance and implementing improvements that enhance the overall client experience. Emma Rigby works closely with other senior leaders to address complex organizational challenges and drive sustainable growth. By focusing on operational excellence and process optimization, the Deputy Director ensures that the firm remains agile and responsive to the needs of its diverse client base. Through diligent oversight and strategic planning, Rigby contributes to the firm's ability to provide high-quality legal services in a competitive and evolving marketplace.

    Frequently Asked Questions Regarding Dentons Top Executives and Leadership Team

    Who leads Dentons?
    Dentons is led by Mohamed Zaanouni (Africa Chief Executive Officer and Chairperson Tunisia), along with executives such as Gerald Singham (Global Vice Chair and ASEAN Chief Executive Officer) and Amber Warren (Australian Chair and Chief Executive Officer, Australasia).
    Who is part of Dentons’s executive team?
    The executive team of Dentons includes leaders such as Mohamed Zaanouni (Africa Chief Executive Officer and Chairperson Tunisia), Gerald Singham (Global Vice Chair and ASEAN Chief Executive Officer), Amber Warren (Australian Chair and Chief Executive Officer, Australasia) and other senior executives.
    How many executives does Dentons have?
    Dentons has 10 executives leading key business areas.
    What roles are included in Dentons’s leadership team?
    The leadership team of Dentons includes roles such as Africa Chief Executive Officer and Chairperson Tunisia, Global Vice Chair and ASEAN Chief Executive Officer, Australian Chair and Chief Executive Officer, Australasia, Chief Executive Officer (Canada), Chief Executive Officer (US).