TSI Executive and Leadership Team

July, 2026

Leadership Overview

TSI has 10 executives leading key functions including strategy, technology, finance, operations, and market expansion.

Driven by innovation, TSI provides essential measurement, application guidance, and data analytics solutions across occupational health, safety, research, HVAC, environmental, healthcare, and manufacturing sectors, impacting global industries through precise instrumentation.

Leadership Roles at TSI

  • Chief Executive Officer - Sumeet Daryani
  • Chief Executive Officer & Founder - Vantonio Fraley
  • Chief Executive Officer & President - Michael Ellis
  • President & Chief Executive Officer - Thomas Kennedy
  • Chief Financial Officer - Tom Smith
  • President - Sonya Van Cleave
  • President - Terry Toliver
  • President - Michael Hankirk
  • Chief Technology Officer - Charles Glass
  • Chief Operations Officer - Viktoriya Omelchenko
  • Sumeet Daryani - Chief Executive Officer

    Sumeet Daryani, the Chief Executive Officer at TSI, directs the company's overarching strategy and operational execution. Daryani guides TSI's mission to deliver advanced measurement, application guidance, and data analytics solutions. This leadership ensures TSI effectively serves critical industries such as occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The Chief Executive Officer's focus remains on driving innovation and expanding market reach for TSI's sophisticated instrumentation. Sumeet Daryani's strategic vision propels the company's growth and its commitment to providing high-quality data and analytics to a diverse client base. The executive's role involves aligning all departments toward achieving the company's core objectives and maintaining its position as a leader in test equipment manufacturing.

    Vantonio Fraley - Chief Executive Officer & Founder

    Vantonio Fraley, the Chief Executive Officer & Founder at TSI, established the company's foundational principles and continues to shape its strategic direction. Fraley's leadership is central to TSI's commitment to building instruments that offer precise measurement, application guidance, and data analytics. The founder's vision extends across diverse sectors including occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. Vantonio Fraley's ongoing involvement ensures the company remains true to its innovative roots while adapting to evolving industry demands. This executive's influence is critical in maintaining TSI's reputation for quality and reliability in the global market. The Chief Executive Officer & Founder's role encompasses fostering a culture of continuous improvement and technological advancement.
    Vantonio Fraley

    Michael Ellis - Chief Executive Officer & President

    Michael Ellis, the Chief Executive Officer & President at TSI, spearheads the company's strategic initiatives and operational oversight. Ellis drives TSI's mission to provide essential measurement, application guidance, and data analytics solutions to key industries. This dual role ensures cohesive leadership across executive functions and the broader organization, impacting sectors from occupational health & safety to manufacturing. The Chief Executive Officer & President's responsibilities include fostering innovation and ensuring the delivery of high-quality instrumentation. Michael Ellis's leadership is instrumental in navigating market complexities and expanding TSI's global presence. The executive's focus is on optimizing business performance and reinforcing TSI's commitment to scientific accuracy and customer support.

    Thomas Kennedy - President & Chief Executive Officer

    Thomas Kennedy, the President & Chief Executive Officer at TSI, directs the company's strategic vision and overall business operations. Kennedy leads TSI's efforts in developing and delivering advanced measurement, application guidance, and data analytics solutions. This executive's purview covers critical industries including occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The President & Chief Executive Officer's role is pivotal in driving technological innovation and ensuring the integrity of TSI's product offerings. Thomas Kennedy's leadership ensures the company's sustained growth and its commitment to providing precise, reliable instrumentation worldwide. The executive's focus involves enhancing operational efficiencies and strengthening market leadership.
    Thomas Kennedy

    Tom Smith - Chief Financial Officer

    Tom Smith, the Chief Financial Officer at TSI, manages the company's financial strategy, planning, and reporting. Smith oversees all fiscal operations, ensuring robust financial health and supporting TSI's growth objectives across its diverse industry segments. This role is critical for maintaining the company's ability to invest in innovation for measurement, application guidance, and data analytics solutions. The Chief Financial Officer's responsibilities include optimizing resource allocation and managing financial risks associated with serving sectors like occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. Tom Smith's financial acumen is essential for driving profitability and ensuring long-term sustainability. The executive's focus is on fiscal discipline and strategic financial management.

    Sonya Van Cleave - President

    Sonya Van Cleave, the President at TSI, oversees key strategic initiatives and operational functions that drive the company's market presence. Van Cleave's leadership supports TSI's mission to provide essential measurement, application guidance, and data analytics solutions. This role is critical for ensuring the effective deployment of technology across industries such as occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The President's responsibilities include fostering cross-functional collaboration and enhancing customer engagement. Sonya Van Cleave's strategic direction contributes significantly to TSI's reputation for innovation and reliability. The executive's focus is on driving business development and strengthening market penetration.

    Terry Toliver - President

    Terry Toliver, the President at TSI, directs critical business operations and strategic planning to advance the company's market position. Toliver's leadership is instrumental in ensuring TSI delivers high-caliber measurement, application guidance, and data analytics solutions. This executive's focus supports diverse sectors including occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The President's role involves optimizing departmental synergies and driving performance improvements across the organization. Terry Toliver's strategic insights are crucial for maintaining TSI's competitive edge and expanding its global reach. The executive's focus is on enhancing operational effectiveness and achieving strategic growth objectives.

    Michael Hankirk - President

    Michael Hankirk, the President at TSI, leads significant operational segments and strategic growth efforts for the company. Hankirk's leadership ensures TSI effectively provides advanced measurement, application guidance, and data analytics solutions. This executive's purview extends to critical industries such as occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The President's responsibilities include driving market expansion and fostering strong client relationships. Michael Hankirk's strategic contributions are vital for reinforcing TSI's commitment to technological excellence and customer satisfaction. The executive's focus is on optimizing business processes and achieving sustained market leadership.

    Charles Glass - Chief Technology Officer

    Charles Glass, the Chief Technology Officer at TSI, architects the company's technological roadmap and oversees all research and development initiatives. Glass drives innovation in measurement, application guidance, and data analytics, ensuring TSI's instruments remain at the forefront of industry standards. This leadership is crucial for serving sectors such as occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The Chief Technology Officer's responsibilities include advancing the capabilities of TSI's product portfolio and exploring new technological frontiers. Charles Glass's expertise is vital in translating complex scientific principles into practical, high-performance instrumentation. The executive's focus is on enhancing product functionality and ensuring technological superiority in the market.

    Viktoriya Omelchenko - Chief Operations Officer

    Viktoriya Omelchenko, the Chief Operations Officer at TSI, directs the company's global operational efficiency and supply chain management. Omelchenko ensures the seamless production and delivery of TSI's advanced measurement, application guidance, and data analytics solutions. This leadership is vital for supporting industries including occupational health & safety, research, HVAC, environmental, healthcare, and manufacturing. The Chief Operations Officer's responsibilities encompass optimizing manufacturing processes and enhancing logistical networks to meet market demands. Viktoriya Omelchenko's operational expertise is key to maintaining product quality and ensuring timely distribution of TSI's sophisticated instrumentation. The executive's focus is on streamlining operations and driving operational excellence.

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    Frequently Asked Questions Regarding TSI Top Executives and Leadership Team

    Who leads TSI?
    TSI is led by Sumeet Daryani (Chief Executive Officer), along with executives such as Vantonio Fraley (Chief Executive Officer & Founder) and Michael Ellis (Chief Executive Officer & President).
    Who is part of TSI’s executive team?
    The executive team of TSI includes leaders such as Sumeet Daryani (Chief Executive Officer), Vantonio Fraley (Chief Executive Officer & Founder), Michael Ellis (Chief Executive Officer & President) and other senior executives.
    How many executives does TSI have?
    TSI has 10 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 & Founder, Chief Executive Officer & President, President & Chief Executive Officer, Chief Financial Officer.