MMS Holdings Executive and Leadership Team

June, 2026

Leadership Overview

MMS Holdings has 5 executives leading key functions including finance, operations, information technology, and strategy.

Driven by a commitment to client success, MMS Holdings operates as a global, data-focused CRO, dedicated to navigating the evolving needs of sponsors through a science-first approach and robust processes, fostering consistent organic growth and delivering exceptional outcomes.

Leadership Roles at MMS Holdings

  • Chief Financial Officer - Stacy Rusley
  • Chief Operating Officer - Abdul Ch
  • President - Yonghoon Jeong
  • President - Micky Miranda
  • Chief Information Officer - Michael Frakes
  • Stacy Rusley - Chief Financial Officer

    Stacy Rusley, the Chief Financial Officer at MMS Holdings, directs all financial operations and strategic fiscal planning. Overseeing budgeting, forecasting, and financial reporting, Rusley ensures robust financial health and sustainable growth for the organization. This leadership role involves managing capital allocation, optimizing financial performance, and driving profitability in alignment with the company's global expansion objectives. By maintaining stringent financial controls and exploring innovative investment opportunities, Stacy Rusley directly supports the company's mission to provide data-focused CRO services. The Chief Financial Officer's oversight extends to risk management and ensuring compliance with all financial regulations, thereby safeguarding the company's assets and enhancing stakeholder value. Rusley's strategic financial guidance is critical for navigating market complexities and achieving long-term operational stability.

    Abdul Ch - Chief Operating Officer

    Abdul Ch, the Chief Operating Officer at MMS Holdings, orchestrates the company's global operational strategies and day-to-day execution. Overseeing a worldwide team of over 950 colleagues, Ch ensures seamless delivery of data services and regulatory submission support to sponsors. This critical role involves optimizing internal processes, enhancing operational efficiency, and driving service excellence across all departments. By fostering a culture of collaboration and accountability, Abdul Ch directly contributes to the company's impeccable 97 percent customer satisfaction rating. The Chief Operating Officer's responsibilities include managing resource allocation, implementing best practices, and ensuring that operational frameworks align with the company's science-first approach. Ch's leadership is fundamental to MMS Holdings' ability to consistently guide sponsors toward positive outcomes and maintain year-over-year organic growth.

    Yonghoon Jeong - President

    Yonghoon Jeong, the President at MMS Holdings, drives strategic initiatives and oversees key aspects of the company's global operations and market expansion. Jeong's leadership focuses on advancing the company's vision as a premier data-focused CRO, ensuring that client needs are met with precision and scientific rigor. This executive role involves fostering strong relationships with sponsors, guiding them through complex data services and regulatory submissions. By championing a culture of excellence and continuous improvement, Yonghoon Jeong directly contributes to the company's sustained organic growth and its reputation for dependable, customer-driven service. The President's strategic direction is vital for navigating industry challenges and capitalizing on emerging opportunities, reinforcing MMS Holdings' commitment to positive outcomes for every sponsor. Jeong's influence shapes the company's trajectory toward greater impact and market leadership.

    Micky Miranda - President

    Micky Miranda, the President at MMS Holdings, spearheads critical strategic planning and operational oversight, contributing significantly to the company's global reach and client success. Miranda's leadership emphasizes the company's core mission: to serve as a dependable, data-focused CRO that consistently addresses the unique requirements of sponsors. This role involves cultivating an environment where a science-first methodology and robust processes empower colleagues to deliver exceptional results. By ensuring alignment across departments and driving forward-thinking initiatives, Micky Miranda directly supports the company's impressive customer satisfaction ratings and its trajectory of positive organic growth. The President's focus on guiding sponsors through data services and regulatory submissions is paramount to achieving desired outcomes. Miranda's strategic vision reinforces MMS Holdings' commitment to excellence and client partnership.

    Michael Frakes - Chief Information Officer

    Michael Frakes, the Chief Information Officer at MMS Holdings, architects and directs the company's technology infrastructure and digital strategy. Overseeing all aspects of information systems, data security, and technological innovation, Frakes ensures that MMS Holdings maintains a cutting-edge, data-focused operational capability. This leadership position involves implementing advanced technological solutions that support the company's role as a global CRO, enhancing data integrity and streamlining regulatory submission processes for sponsors. By driving digital transformation initiatives, Michael Frakes directly supports the company's commitment to a science-first approach and its ability to adapt to the evolving needs of the market. The Chief Information Officer's strategic vision is crucial for maintaining robust data services, ensuring compliance, and fostering the organic growth that defines MMS Holdings' success. Frakes's expertise fortifies the company's technological backbone, enabling superior client outcomes.

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    Frequently Asked Questions Regarding MMS Holdings Top Executives and Leadership Team

    Who leads MMS Holdings?
    MMS Holdings is led by Stacy Rusley (Chief Financial Officer), along with executives such as Abdul Ch (Chief Operating Officer) and Yonghoon Jeong (President).
    Who is part of MMS Holdings’s executive team?
    The executive team of MMS Holdings includes leaders such as Stacy Rusley (Chief Financial Officer), Abdul Ch (Chief Operating Officer), Yonghoon Jeong (President) and other senior executives.
    How many executives does MMS Holdings have?
    MMS Holdings has 5 executives leading key business areas.
    What roles are included in MMS Holdings’s leadership team?
    The leadership team of MMS Holdings includes roles such as Chief Financial Officer, Chief Operating Officer, President, President, Chief Information Officer.