Mercer Executive and Leadership Team

November, 2026

Leadership Overview

Mercer has 10 executives leading key functions including strategy, financial oversight, technology infrastructure, and operational excellence.

Committed to advancing organizational health and workforce resilience, Mercer delivers comprehensive advisory solutions that empower global enterprises to navigate complex financial, retirement, and human capital challenges with precision and long-term strategic foresight.

Leadership Roles at Mercer

  • Chief Executive Officer (Mercer Super, Interim) - Court Haas
  • Chief Financial Officer - Vikki Pruitt
  • Chief Operating Officer - Jon Gezotis
  • Chief Operating Officer, Mercer Alternatives - Christopher Curry
  • Chief Operating Officer, Mercer (China) - Monica Wu
  • Chief of Staff - Lina Buitrago
  • Chief Information Officer - Tony Kong
  • Principal, Chief of Staff - Growth Markets Region (Latin America, Asia, Middle East and Africa) - Gyongyi Siffel
  • Strategic Initiatives Leader & Chief of Staff - Grace Mandelsberg
  • Chief Information Officer & Head of Technology Amea & Pacific - Trevor Hare
  • Court Haas - Chief Executive Officer (Mercer Super, Interim)

    Court Haas, the Chief Executive Officer (Mercer Super, Interim) at Mercer, leads the strategic direction and governance of the firm's superannuation and retirement services. Haas oversees the management of investment portfolios and member outcomes, ensuring that retirement planning solutions meet the highest standards of fiduciary responsibility. By driving the firm's superannuation strategy, the Chief Executive Officer (Mercer Super, Interim) enhances the value provided to members through robust financial advisory and well-being programs. Court Haas collaborates with the board and executive leadership to ensure regulatory compliance and operational excellence within the retirement sector. This role involves navigating complex financial landscapes to secure long-term growth for the firm's retirement business. Through the leadership of the superannuation division, Haas supports the firm's broader mission to improve financial outcomes for individuals and organizations alike, maintaining a focus on sustainable performance and member trust.
    Court Haas

    Vikki Pruitt - Chief Financial Officer

    Vikki Pruitt, the Chief Financial Officer at Mercer, directs the firm's global financial strategy and fiscal health. Pruitt oversees capital allocation, budgeting, and financial reporting to ensure alignment with the broader goals of Marsh McLennan. By managing the firm's investment in workforce transformation and retirement planning services, the Chief Financial Officer optimizes profitability while maintaining rigorous risk management standards. Vikki Pruitt collaborates with the executive team to evaluate the financial viability of new advisory products and market expansions. This leadership role involves monitoring economic indicators to guide long-term growth and stability across diverse international markets. Through precise financial modeling and performance analysis, Pruitt ensures that the firm remains well-positioned to deliver value to clients. The Chief Financial Officer maintains strict adherence to regulatory requirements, safeguarding the firm's reputation as a trusted advisor in the global consulting landscape.
    Vikki Pruitt

    Jon Gezotis - Chief Operating Officer

    Jon Gezotis, the Chief Operating Officer at Mercer, manages the firm's internal operational framework and service delivery models. Gezotis oversees the integration of consulting workflows to ensure that client solutions in investments and employee well-being remain consistent and efficient. By optimizing internal processes, the Chief Operating Officer drives productivity across the firm's global network. Jon Gezotis collaborates with regional leaders to standardize service quality and operational excellence. This leadership role involves identifying bottlenecks in project delivery and implementing structural improvements to enhance client outcomes. Through the management of operational resources, Gezotis supports the firm's mission to provide high-impact advisory services. The Chief Operating Officer maintains a focus on scalability, ensuring that the firm can effectively handle the complexities of workforce transformation for diverse organizations. Gezotis ensures that operational strategies align with the firm's long-term growth objectives.
    Jon Gezotis

    Christopher Curry - Chief Operating Officer, Mercer Alternatives

    Christopher Curry, the Chief Operating Officer, Mercer Alternatives at Mercer, manages the operational infrastructure for the firm's alternative investment advisory services. Curry oversees the processes that support investment research, portfolio management, and client reporting for alternative asset classes. By streamlining the operations of the alternatives division, the Chief Operating Officer, Mercer Alternatives ensures that the firm delivers precise and timely investment insights. Christopher Curry collaborates with investment teams to enhance the efficiency of service delivery and risk management protocols. This role involves coordinating with global teams to maintain high standards of operational performance in the competitive alternatives market. Through the management of specialized operational workflows, Curry supports the firm's ability to provide sophisticated investment solutions. The Chief Operating Officer, Mercer Alternatives ensures that the division's operational capabilities remain aligned with the firm's commitment to delivering superior financial outcomes for institutional clients.

    Monica Wu - Chief Operating Officer, Mercer (China)

    Monica Wu, the Chief Operating Officer, Mercer (China) at Mercer, directs the operational activities and service delivery within the Chinese market. Wu manages the firm's local consulting operations, ensuring that workforce strategies and employee well-being solutions are effectively implemented for clients in the region. By overseeing local business processes, the Chief Operating Officer, Mercer (China) drives operational efficiency and service quality across the firm's Chinese offices. Monica Wu collaborates with regional leadership to adapt global advisory models to the specific requirements of the local market. This role involves managing resource allocation and operational risk to support the firm's growth in China. Through the oversight of regional operations, Wu ensures that the firm maintains its competitive edge in providing human capital and financial advisory services. The Chief Operating Officer, Mercer (China) supports the firm's mission by delivering localized expertise that drives organizational success.
    Monica Wu

    Lina Buitrago - Chief of Staff

    Lina Buitrago, the Chief of Staff at Mercer, coordinates executive workflows and aligns internal operations with the firm's broader consulting objectives. Buitrago manages cross-functional communication channels to ensure that leadership priorities remain consistent across all advisory divisions. By streamlining decision-making processes, the Chief of Staff facilitates rapid responses to shifting market demands in workforce strategy and employee well-being. Lina Buitrago monitors the execution of high-level projects, ensuring that resource allocation matches the firm's commitment to organizational resilience. This role requires constant interaction with senior partners to refine internal governance and improve operational efficiency. Through rigorous oversight of administrative and strategic initiatives, the Chief of Staff supports the firm's mission to improve financial outcomes for clients worldwide. Buitrago maintains a focus on operational agility, enabling the firm to sustain its competitive advantage within the professional services sector.

    Tony Kong - Chief Information Officer

    Tony Kong, the Chief Information Officer at Mercer, architects the digital infrastructure necessary to support complex consulting and advisory services. Kong manages the firm's technology stack, ensuring that data security, cloud integration, and analytical tools remain at the forefront of industry standards. By driving digital transformation initiatives, the Chief Information Officer enables consultants to deliver data-driven insights regarding retirement planning and health benefits. Tony Kong oversees the implementation of scalable software solutions that enhance client engagement and internal productivity. This role involves coordinating with global IT teams to maintain robust cybersecurity protocols across all regional operations. Through the integration of advanced technology, Kong supports the firm's ability to provide sophisticated workforce strategies. The Chief Information Officer ensures that the firm's digital capabilities evolve in tandem with the changing needs of the global professional services market.

    Gyongyi Siffel - Principal, Chief of Staff - Growth Markets Region (Latin America, Asia, Middle East and Africa)

    Gyongyi Siffel, the Principal, Chief of Staff - Growth Markets Region (Latin America, Asia, Middle East and Africa) at Mercer, coordinates strategic initiatives across high-growth international territories. Siffel manages the alignment of regional operations with the firm's global consulting standards, focusing on market penetration in Latin America, Asia, the Middle East, and Africa. By facilitating communication between regional leadership and global headquarters, the Principal, Chief of Staff - Growth Markets Region (Latin America, Asia, Middle East and Africa) ensures that workforce strategies are tailored to local market nuances. Gyongyi Siffel monitors the progress of regional growth projects, identifying opportunities for expansion in retirement and health benefit services. This role involves navigating diverse regulatory environments to maintain operational consistency. Through the oversight of regional initiatives, Siffel supports the firm's commitment to delivering localized expertise on a global scale, driving sustainable growth in emerging markets.

    Grace Mandelsberg - Strategic Initiatives Leader & Chief of Staff

    Grace Mandelsberg, the Strategic Initiatives Leader & Chief of Staff at Mercer, directs the development and execution of high-priority corporate projects. Mandelsberg manages the intersection of long-term strategy and daily operational execution, ensuring that the firm's advisory services remain competitive. By leading cross-departmental initiatives, the Strategic Initiatives Leader & Chief of Staff fosters innovation in workforce transformation and employee well-being solutions. Grace Mandelsberg coordinates with the executive team to translate vision into actionable business plans. This role involves analyzing market trends to identify new areas for service development and operational improvement. Through the management of strategic projects, Mandelsberg ensures that the firm maintains its position as a leader in the professional services industry. The Strategic Initiatives Leader & Chief of Staff drives organizational alignment, enabling the firm to respond effectively to the evolving needs of clients across all sectors.

    Trevor Hare - Chief Information Officer & Head of Technology Amea & Pacific

    Trevor Hare, the Chief Information Officer & Head of Technology Amea & Pacific at Mercer, directs the technology strategy and infrastructure across the AMEA and Pacific regions. Hare manages the deployment of digital tools and cybersecurity frameworks that support the firm's consulting services in these diverse markets. By overseeing regional technology operations, the Chief Information Officer & Head of Technology Amea & Pacific ensures that consultants have access to robust data and analytical platforms. Trevor Hare collaborates with global IT leadership to align regional technology initiatives with the firm's overarching digital transformation goals. This role involves managing the integration of new software solutions to enhance client service delivery in retirement and workforce planning. Through the management of regional technology infrastructure, Hare supports the firm's ability to provide consistent and secure advisory services. The Chief Information Officer & Head of Technology Amea & Pacific drives technological innovation to sustain growth.

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    Frequently Asked Questions Regarding Mercer Top Executives and Leadership Team

    Who leads Mercer?
    Mercer is led by Court Haas (Chief Executive Officer (Mercer Super, Interim)), along with executives such as Vikki Pruitt (Chief Financial Officer) and Jon Gezotis (Chief Operating Officer).
    Who is part of Mercer’s executive team?
    The executive team of Mercer includes leaders such as Court Haas (Chief Executive Officer (Mercer Super, Interim)), Vikki Pruitt (Chief Financial Officer), Jon Gezotis (Chief Operating Officer) and other senior executives.
    How many executives does Mercer have?
    Mercer has 10 executives leading key business areas.
    What roles are included in Mercer’s leadership team?
    The leadership team of Mercer includes roles such as Chief Executive Officer (Mercer Super, Interim), Chief Financial Officer, Chief Operating Officer, Chief Operating Officer, Mercer Alternatives, Chief Operating Officer, Mercer (China).