Canadian Nuclear Laboratories Executive and Leadership Team

May, 2026

Leadership Overview

Canadian Nuclear Laboratories has 6 executives leading key functions including strategy, operations, information technology, and finance.

Driven by innovation, Canadian Nuclear Laboratories is Canadas premier nuclear science and technology organization, dedicated to developing peaceful and innovative applications from nuclear technology through its expertise in physics, metallurgy, and chemistry, impacting global markets.

Leadership Roles at Canadian Nuclear Laboratories

  • Chief Executive Officer & President - Dennis Carr
  • President & Chief Executive Officer - Mark Lesinski
  • Corporate Services Chief Financial Officer & Vice President - Shawn Bovingdon
  • Chief Operating Officer - Leonard Clewett
  • Chief Information Officer - Tom Vaughan
  • Chief of Staff - Heather Crowe
  • Dennis Carr - Chief Executive Officer & President

    Dennis Carr, the Chief Executive Officer & President at Canadian Nuclear Laboratories, directs the overarching strategy and operational execution for Canadas premier nuclear science and technology organization. Carr guides the company's global leadership in developing peaceful and innovative applications derived from nuclear technology, leveraging deep expertise in physics, metallurgy, and chemistry. Overseeing all major strategic initiatives, the Chief Executive Officer & President ensures alignment with market demands and scientific advancement. This leadership role involves fostering a culture of innovation and safety across all departments. By driving forward the company's mission, Dennis Carr directly impacts the advancement of nuclear science and its beneficial applications worldwide. Carr's executive oversight ensures the organization maintains its position as a world leader in nuclear R&D.
    Dennis Carr

    Mark Lesinski - President & Chief Executive Officer

    Mark Lesinski, the President & Chief Executive Officer at Canadian Nuclear Laboratories, drives the strategic vision and corporate direction for the nations leading nuclear science and technology entity. Lesinski champions the development of peaceful nuclear applications, building upon the organizations core strengths in physics, metallurgy, and chemistry. This executive leadership focuses on expanding the reach and impact of CNLs innovations across global markets. Overseeing critical business development and strategic partnerships, the President & Chief Executive Officer ensures sustained growth and technological leadership. By setting ambitious goals and fostering a collaborative environment, Mark Lesinski directly contributes to the organizations mission of advancing nuclear science for societal benefit. Lesinski's tenure emphasizes innovation and operational excellence.

    Shawn Bovingdon - Corporate Services Chief Financial Officer & Vice President

    Shawn Bovingdon, the Corporate Services Chief Financial Officer & Vice President at Canadian Nuclear Laboratories, manages the companys financial health and oversees essential corporate services that support its mission. Bovingdon directs financial planning, budgeting, and investment strategies crucial for advancing nuclear science and technology, including expertise in physics, metallurgy, and chemistry. This role involves ensuring fiscal responsibility and optimizing financial resources for the development of peaceful nuclear applications. By providing strategic financial guidance and managing corporate infrastructure, the Corporate Services Chief Financial Officer & Vice President enables CNLs operational and research objectives. Ensuring robust financial controls and efficient service delivery, Shawn Bovingdon directly supports the organizations long-term sustainability and growth. Bovingdon's financial acumen underpins CNLs strategic initiatives.

    Leonard Clewett - Chief Operating Officer

    Leonard Clewett, the Chief Operating Officer at Canadian Nuclear Laboratories, directs the day-to-day operational activities and ensures the efficient execution of CNLs scientific and technological programs. Clewett oversees the implementation of advanced processes in physics, metallurgy, and chemistry, supporting the development of peaceful nuclear applications. This executive leadership focuses on optimizing resource utilization and enhancing operational safety across all facilities. By managing complex project lifecycles and ensuring regulatory compliance, the Chief Operating Officer drives operational excellence. Ensuring the effective deployment of resources and personnel, Leonard Clewett directly supports the organizations commitment to innovation and global impact. Clewett's operational management is critical to CNLs success.

    Tom Vaughan - Chief Information Officer

    Tom Vaughan, the Chief Information Officer at Canadian Nuclear Laboratories, architects and manages the companys comprehensive information technology infrastructure and digital strategy. Vaughan ensures robust cybersecurity measures and efficient data management systems are in place to support CNLs advanced research in physics, metallurgy, and chemistry. This role involves overseeing the integration of cutting-edge technologies to enhance operational efficiency and scientific discovery. By directing IT operations, the Chief Information Officer supports the development of peaceful nuclear applications and the organizations global market presence. Ensuring seamless data flow and secure access to critical research information, Tom Vaughan directly enables the companys mission. Vaughan's leadership guarantees technological capabilities align with scientific objectives.
    Tom Vaughan

    Heather Crowe - Chief of Staff

    Heather Crowe, the Chief of Staff at Canadian Nuclear Laboratories, provides strategic support and operational coordination across executive functions, ensuring seamless execution of CNLs mission. Crowe facilitates communication and alignment between departments, enhancing the development of peaceful nuclear applications leveraging expertise in physics, metallurgy, and chemistry. This position involves managing key projects and initiatives that drive the companys scientific and business objectives forward. By streamlining executive operations and optimizing resource allocation, the Chief of Staff ensures efficient progress towards organizational goals. Facilitating strategic decision-making and operational synergy, Heather Crowe directly contributes to CNLs leadership in nuclear science and technology. Crowe's role is pivotal in maintaining organizational momentum.

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    Frequently Asked Questions Regarding Canadian Nuclear Laboratories Top Executives and Leadership Team

    Who leads Canadian Nuclear Laboratories?
    Canadian Nuclear Laboratories is led by Dennis Carr (Chief Executive Officer & President), along with executives such as Mark Lesinski (President & Chief Executive Officer) and Shawn Bovingdon (Corporate Services Chief Financial Officer & Vice President).
    Who is part of Canadian Nuclear Laboratories’s executive team?
    The executive team of Canadian Nuclear Laboratories includes leaders such as Dennis Carr (Chief Executive Officer & President), Mark Lesinski (President & Chief Executive Officer), Shawn Bovingdon (Corporate Services Chief Financial Officer & Vice President) and other senior executives.
    How many executives does Canadian Nuclear Laboratories have?
    Canadian Nuclear Laboratories has 6 executives leading key business areas.
    What roles are included in Canadian Nuclear Laboratories’s leadership team?
    The leadership team of Canadian Nuclear Laboratories includes roles such as Chief Executive Officer & President, President & Chief Executive Officer, Corporate Services Chief Financial Officer & Vice President, Chief Operating Officer, Chief Information Officer.