TSI Executive and Leadership Team

June, 2026

Leadership Overview

TSI has 6 executives leading key functions including strategy, technology, and operations.

Driven by innovation, TSI provides measurement, application guidance, and data analytics solutions across occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing sectors, shaping industry standards through advanced instrumentation.

Leadership Roles at TSI

  • Chief Executive Officer - Philippe Verdier
  • Chief Executive Officer & President - Michael Ellis
  • President & Chief Executive Officer - Kunihito Toma
  • President & Chief Executive Officer - Thomas Kennedy
  • President - Terry Toliver
  • Chief Technology Officer - Benjamin Chocron
  • Philippe Verdier - Chief Executive Officer

    Philippe Verdier, the Chief Executive Officer at TSI, directs the company's overarching strategy and operational execution. Verdier guides the organization's expansion into new markets and ensures alignment with industry demands for advanced measurement solutions. Overseeing global operations, Philippe Verdier drives innovation in data analytics and application guidance for sectors including occupational health, environmental monitoring, and manufacturing. This leadership role involves fostering strategic partnerships and enhancing the company's technological capabilities to meet evolving client needs. By focusing on market leadership, Verdier ensures TSI maintains its position as a premier provider of critical measurement instruments.

    Michael Ellis - Chief Executive Officer & President

    Michael Ellis, the Chief Executive Officer & President at TSI, spearheads the company's strategic vision and corporate governance. Ellis directs all facets of business operations, ensuring robust growth and market penetration across diverse industries. Overseeing global initiatives, Michael Ellis champions the development and deployment of cutting-edge measurement instruments and data analytics solutions. This executive position involves cultivating key stakeholder relationships and driving operational efficiencies to support TSI's mission in occupational health, research, and manufacturing. Through strategic leadership, Ellis ensures the company's continued impact in providing essential tools for environmental and healthcare applications.

    Kunihito Toma - President & Chief Executive Officer

    Kunihito Toma, the President & Chief Executive Officer at TSI, orchestrates the company's strategic direction and global market presence. Toma leads the executive team in advancing TSI's mission to deliver precise measurement solutions across critical sectors. Overseeing international operations, Kunihito Toma drives innovation in data analytics and application guidance for industries ranging from HVAC to healthcare. This pivotal role involves fostering cross-functional collaboration and ensuring the highest standards of product development and customer support. By focusing on technological advancement, Toma ensures TSI's continued leadership in providing essential instrumentation for research and safety applications.

    Thomas Kennedy - President & Chief Executive Officer

    Thomas Kennedy, the President & Chief Executive Officer at TSI, directs the company's strategic initiatives and overall business performance. Kennedy leads the organization in providing advanced measurement, application guidance, and data analytics solutions to a global clientele. Overseeing key operational functions, Thomas Kennedy drives innovation in instrumentation for industries including occupational health, environmental monitoring, and manufacturing. This executive leadership involves fostering strategic partnerships and ensuring the delivery of high-quality products that meet rigorous industry standards. Through dedicated leadership, Kennedy ensures TSI's continued impact in research and healthcare sectors.
    Thomas Kennedy

    Terry Toliver - President

    Terry Toliver, the President at TSI, guides the company's operational strategies and market expansion efforts. Toliver oversees the execution of business plans, ensuring efficient delivery of measurement and data analytics solutions. Driving operational excellence, Terry Toliver focuses on enhancing customer engagement and supporting the diverse needs of industries including HVAC, research, and manufacturing. This leadership position involves fostering collaboration across departments to optimize product development and service delivery. By ensuring seamless operations, Toliver supports TSI's commitment to providing reliable instrumentation for environmental and occupational health applications.

    Benjamin Chocron - Chief Technology Officer

    Benjamin Chocron, the Chief Technology Officer at TSI, architects the company's technological roadmap and innovation pipeline. Chocron oversees the research and development of advanced measurement instruments and data analytics platforms. Driving technological advancement, Benjamin Chocron ensures TSI's solutions meet the complex needs of industries such as healthcare, manufacturing, and environmental science. This role involves leading engineering teams in developing cutting-edge hardware and software, focusing on precision, reliability, and user-centric design. By championing technological excellence, Chocron supports TSI's mission to provide critical data for occupational health and safety applications.

    Explore Leadership Teams in Manufacturing

    Frequently Asked Questions Regarding TSI Top Executives and Leadership Team

    Who leads TSI?
    TSI is led by Philippe Verdier (Chief Executive Officer), along with executives such as Michael Ellis (Chief Executive Officer & President) and Kunihito Toma (President & Chief Executive Officer).
    Who is part of TSI’s executive team?
    The executive team of TSI includes leaders such as Philippe Verdier (Chief Executive Officer), Michael Ellis (Chief Executive Officer & President), Kunihito Toma (President & Chief Executive Officer) and other senior executives.
    How many executives does TSI have?
    TSI has 6 executives leading key business areas.
    What roles are included in TSI’s leadership team?
    The leadership team of TSI includes roles such as Chief Executive Officer, Chief Executive Officer & President, President & Chief Executive Officer, President & Chief Executive Officer, President.