Vistra Executive and Leadership Team

October, 2026

Leadership Overview

Vistra has 10 executives leading key functions including strategy, regional operations, financial management, human capital, and corporate communications.

Focused on delivering resilient and sustainable business solutions, Vistra empowers global clients through expert risk management, advisory services, and comprehensive administrative support across diverse international markets.

Leadership Roles at Vistra

  • Chief Executive Officer - Dyland Mah
  • Chief of Staff To the Chief Executive Officer - Michelle Ketsler
  • Chief Financial Officer & Head of & Treasury Services - Linh Gigler
  • Chief Operating Officer (Japan) - Yohei Nishimatsu
  • Chief Operating Officer, Greater (China) - Scott Wang
  • Group President - Douglas Davis
  • Chief People Officer - Celeste Munoz
  • Chief Communications Officer & Vice President, Corporate Affairs - Meranda Cohn
  • Managing Director - Frank Anduiza
  • Managing Director - Neil Puresh
  • Dyland Mah - Chief Executive Officer

    Dyland Mah, the Chief Executive Officer at Vistra, directs the overarching corporate strategy and long-term vision for the organization. By aligning global service lines with client needs in risk, compliance, and advisory sectors, the Chief Executive Officer ensures consistent operational excellence. Dyland Mah maintains a sharp focus on scaling the firm's footprint across international markets while fostering a culture of sustainable growth. This leadership role involves constant collaboration with the Board to refine business models and enhance service delivery standards. Through rigorous oversight of organizational performance, the Chief Executive Officer drives the company toward its primary objectives of providing resilient solutions. Mah consistently evaluates market trends to maintain a competitive edge in the professional services landscape. By prioritizing client-centric innovation, the Chief Executive Officer secures the firm's position as a leader in finance, accounting, and administration.
    Dyland Mah

    Michelle Ketsler - Chief of Staff To the Chief Executive Officer

    Michelle Ketsler, the Chief of Staff To the Chief Executive Officer at Vistra, manages the strategic priorities and operational flow of the executive office. By facilitating communication between the Chief Executive Officer and various department heads, the Chief of Staff To the Chief Executive Officer ensures alignment on key corporate initiatives. Michelle Ketsler drives the execution of high-level projects that support the firm's mission of providing resilient and sustainable business solutions. This role involves synthesizing complex information to assist in decision-making processes and monitoring the progress of critical business objectives. Through the coordination of cross-functional efforts, the Chief of Staff To the Chief Executive Officer improves organizational agility and internal collaboration. Ketsler maintains a focus on operational efficiency, ensuring that executive resources are directed toward the most impactful areas. By managing the cadence of leadership activities, the Chief of Staff To the Chief Executive Officer supports the firm's overall growth and stability.

    Linh Gigler - Chief Financial Officer & Head of & Treasury Services

    Linh Gigler, the Chief Financial Officer & Head of & Treasury Services at Vistra, directs the financial health and treasury operations of the organization. By managing capital allocation, financial reporting, and liquidity strategies, the Chief Financial Officer & Head of & Treasury Services ensures the firm maintains a strong fiscal foundation. Linh Gigler drives the development of robust financial systems that support the company's advisory and administrative service lines. This role involves overseeing treasury functions to mitigate risk and optimize cash flow across global operations. Through the implementation of rigorous financial controls, the Chief Financial Officer & Head of & Treasury Services supports the firm's commitment to sustainable growth. Gigler collaborates with the executive team to align financial planning with long-term strategic objectives. By ensuring transparency and accuracy in all financial matters, the Chief Financial Officer & Head of & Treasury Services provides the stability necessary for the firm to deliver resilient solutions to clients worldwide.

    Yohei Nishimatsu - Chief Operating Officer (Japan)

    Yohei Nishimatsu, the Chief Operating Officer (Japan) at Vistra, directs all operational activities within the Japanese market, ensuring seamless delivery of finance, accounting, and administrative services. By overseeing local infrastructure and team performance, the Chief Operating Officer (Japan) maintains high standards of compliance and service quality. Yohei Nishimatsu drives the implementation of regional strategies that align with the firm's global commitment to resilient business solutions. This role involves managing complex client requirements and navigating the unique regulatory landscape of the region. Through the optimization of internal workflows, the Chief Operating Officer (Japan) enhances operational efficiency and supports sustainable growth. Nishimatsu collaborates with other regional leaders to share best practices and improve service consistency. By focusing on operational excellence, the Chief Operating Officer (Japan) ensures that the firm remains a trusted partner for clients seeking reliable advisory and transaction support in the region.

    Scott Wang - Chief Operating Officer, Greater (China)

    Scott Wang, the Chief Operating Officer, Greater (China) at Vistra, directs the operational strategy and service delivery across the Greater China region. By overseeing the provision of finance, accounting, and advisory services, the Chief Operating Officer, Greater (China) ensures that client needs are met with precision and compliance. Scott Wang drives the expansion of the firm's footprint by identifying new market opportunities and optimizing local administrative processes. This role involves managing regional teams to maintain high standards of service quality and operational resilience. Through the implementation of strategic initiatives, the Chief Operating Officer, Greater (China) enhances the firm's competitive position in the region. Wang monitors performance metrics to ensure alignment with global corporate goals. By fostering a culture of excellence and innovation, the Chief Operating Officer, Greater (China) supports the firm's mission to provide sustainable solutions for businesses operating in complex and dynamic environments.
    Scott Wang

    Douglas Davis - Group President

    Douglas Davis, the Group President at Vistra, directs the performance and strategic direction of multiple business units within the organization. By overseeing the integration of finance, accounting, and advisory services, the Group President ensures that the firm delivers cohesive and resilient solutions to a global client base. Douglas Davis drives the execution of cross-functional strategies that enhance operational efficiency and market impact. This role involves coordinating with regional leaders to maintain service consistency and regulatory compliance across diverse jurisdictions. Through the application of deep industry knowledge, the Group President identifies opportunities for service innovation and business expansion. Davis monitors the performance of key business lines to ensure alignment with the firm's overarching mission. By fostering collaboration and driving results, the Group President supports the company's commitment to providing sustainable and high-value support for complex client transactions and administrative needs.

    Celeste Munoz - Chief People Officer

    Celeste Munoz, the Chief People Officer at Vistra, directs the human capital strategy, focusing on talent acquisition, development, and organizational culture. By fostering an environment that attracts and retains top-tier professionals, the Chief People Officer ensures the firm has the expertise required to deliver high-quality advisory and administrative services. Celeste Munoz drives initiatives that promote employee engagement and professional growth, aligning the workforce with the company's mission of providing resilient solutions. This role involves designing compensation and benefits structures that support the firm's competitive position in the global market. Through the implementation of inclusive policies, the Chief People Officer enhances organizational performance and supports sustainable business practices. Munoz collaborates with leadership to build a culture of accountability and excellence. By prioritizing the well-being and development of the team, the Chief People Officer ensures that the firm remains a leader in the professional services industry.

    Meranda Cohn - Chief Communications Officer & Vice President, Corporate Affairs

    Meranda Cohn, the Chief Communications Officer & Vice President, Corporate Affairs at Vistra, directs the firm's internal and external communication strategies. By managing corporate reputation and stakeholder engagement, the Chief Communications Officer & Vice President, Corporate Affairs ensures that the company's mission of providing resilient and sustainable solutions is clearly articulated. Meranda Cohn drives the development of messaging that highlights the firm's expertise in risk, compliance, and advisory services. This role involves coordinating with leadership to manage corporate affairs and navigate complex public relations landscapes. Through the implementation of strategic communication plans, the Chief Communications Officer & Vice President, Corporate Affairs enhances the firm's brand visibility and market influence. Cohn monitors media trends and stakeholder sentiment to maintain a positive corporate image. By ensuring consistent and impactful messaging, the Chief Communications Officer & Vice President, Corporate Affairs supports the firm's growth and strengthens its position as a trusted partner in the professional services sector.

    Frank Anduiza - Managing Director

    Frank Anduiza, the Managing Director at Vistra, oversees the execution of complex advisory and transaction support services for a diverse portfolio of clients. By managing regional operations, the Managing Director ensures that service delivery remains consistent with the firm's high standards for compliance and risk mitigation. Frank Anduiza drives the development of tailored financial and administrative solutions that address specific client challenges in volatile markets. This role requires deep engagement with cross-functional teams to streamline workflows and improve operational efficiency. Through the implementation of strategic initiatives, the Managing Director expands the firm's influence within the professional services sector. Anduiza monitors performance metrics to guarantee that all regional activities align with the broader corporate mission. By fostering strong client relationships, the Managing Director secures long-term partnerships and supports the firm's commitment to providing resilient, sustainable business solutions on a global scale.

    Neil Puresh - Managing Director

    Neil Puresh, the Managing Director at Vistra, manages the strategic deployment of finance and accounting resources to support international client operations. By focusing on the optimization of administrative processes, the Managing Director ensures that the firm delivers high-value support for complex transactions. Neil Puresh drives the integration of risk management protocols into daily service delivery, enhancing the overall resilience of client portfolios. This leadership position involves coordinating with global teams to maintain regulatory compliance and operational integrity. Through the application of industry-specific expertise, the Managing Director improves service quality and operational agility. Puresh evaluates internal systems to identify opportunities for growth and efficiency gains. By championing a culture of precision and accountability, the Managing Director strengthens the firm's reputation for excellence. This role remains critical to the successful execution of the company's mission to provide sustainable solutions for businesses navigating intricate global environments.

    Frequently Asked Questions Regarding Vistra Top Executives and Leadership Team

    Who leads Vistra?
    Vistra is led by Dyland Mah (Chief Executive Officer), along with executives such as Michelle Ketsler (Chief of Staff To the Chief Executive Officer) and Linh Gigler (Chief Financial Officer & Head of & Treasury Services).
    Who is part of Vistra’s executive team?
    The executive team of Vistra includes leaders such as Dyland Mah (Chief Executive Officer), Michelle Ketsler (Chief of Staff To the Chief Executive Officer), Linh Gigler (Chief Financial Officer & Head of & Treasury Services) and other senior executives.
    How many executives does Vistra have?
    Vistra has 10 executives leading key business areas.
    What roles are included in Vistra’s leadership team?
    The leadership team of Vistra includes roles such as Chief Executive Officer, Chief of Staff To the Chief Executive Officer, Chief Financial Officer & Head of & Treasury Services, Chief Operating Officer (Japan), Chief Operating Officer, Greater (China).