Loomis Sayles Executive and Leadership Team

September, 2026

Leadership Overview

Loomis Sayles has 8 executives leading key functions including strategy, information technology, operations, growth equity, human resources, institutional services, and financial management.

Committed to delivering superior investment results for institutional and mutual fund clients globally, Loomis Sayles maintains a rigorous philosophy centered on deep research and disciplined risk management to drive long-term value.

Leadership Roles at Loomis Sayles

  • Chairman, Chief Executive Officer & President - Kevin Charleston
  • Chief Financial Officer & Board Member - Susan Sieker
  • Chief Operating Officer - John Gidman
  • Chief Operating Officer, Growth Equity Strategies - Julien Raynal
  • Chief Operating Officer, Institutional Services - Erick Kuchar
  • Chief Information Officer - James Lombardo
  • Chief Technology Officer - Christian Dietz
  • Chief Human Resources Officer - Debbie Lewis
  • Kevin Charleston - Chairman, Chief Executive Officer & President

    Kevin Charleston, the Chairman, Chief Executive Officer & President at Loomis Sayles, directs the overarching strategic vision for the investment management firm. Overseeing global operations, Charleston ensures the alignment of investment strategies with the complex needs of institutional and mutual fund clients. This leadership role involves constant collaboration with the Board to maintain the firm's reputation for excellence in financial markets. By fostering a culture of rigorous research and disciplined risk management, Charleston drives the firm's competitive positioning across international markets. Kevin Charleston also monitors the integration of new investment products to ensure consistent growth. Through active engagement with key stakeholders, the Chairman, Chief Executive Officer & President secures the long-term stability of the organization. This executive leadership remains focused on delivering superior performance while navigating the evolving landscape of global finance and asset management.

    Susan Sieker - Chief Financial Officer & Board Member

    Susan Sieker, the Chief Financial Officer & Board Member at Loomis Sayles, directs the financial health and fiscal strategy of the investment management firm. Overseeing the accounting, treasury, and financial planning departments, Sieker ensures the firm maintains a robust balance sheet to support its global operations. This role involves providing the Board with critical financial insights that inform long-term strategic decisions and capital allocation. By managing the firm's financial risk and regulatory compliance, the Chief Financial Officer & Board Member protects the organization's assets and reputation. Susan Sieker also collaborates with other executive leaders to evaluate the financial viability of new investment products and market expansions. Through the rigorous oversight of financial performance, Sieker supports the firm's mission to deliver consistent value to clients and stakeholders. This leadership position remains central to the firm's ability to navigate the complexities of the global financial services industry.
    Susan Sieker

    John Gidman - Chief Operating Officer

    John Gidman, the Chief Operating Officer at Loomis Sayles, executes the firm's internal business strategy and operational workflows. Overseeing the day-to-day administrative functions, Gidman ensures that the investment management firm operates with maximum efficiency across all departments. This role involves streamlining internal processes to support the complex requirements of institutional and mutual fund clients. By optimizing resource allocation, the Chief Operating Officer enables the firm to scale its operations effectively in response to market demands. John Gidman also works closely with the executive team to implement policies that uphold the firm's long-standing commitment to disciplined investment practices. Through the management of cross-functional teams, Gidman maintains operational excellence in a global environment. This leadership position focuses on removing friction from internal systems, thereby allowing investment professionals to concentrate entirely on delivering superior results for the firm's diverse client base.
    John Gidman

    Julien Raynal - Chief Operating Officer, Growth Equity Strategies

    Julien Raynal, the Chief Operating Officer, Growth Equity Strategies at Loomis Sayles, manages the operational framework specifically for the firm's growth equity investment division. Overseeing the execution of specialized investment mandates, Raynal ensures that the growth equity team possesses the necessary resources to identify and capitalize on emerging market opportunities. This role involves aligning operational workflows with the unique risk-return profiles inherent in growth-oriented portfolios. By refining the processes used for equity analysis and portfolio construction, the Chief Operating Officer, Growth Equity Strategies enhances the overall performance of the division. Julien Raynal also collaborates with institutional sales teams to communicate the value of these strategies to global clients. Through the implementation of rigorous operational standards, Raynal supports the firm's mission to deliver consistent alpha. This leadership function focuses on the intersection of operational efficiency and specialized investment strategy.

    Erick Kuchar - Chief Operating Officer, Institutional Services

    Erick Kuchar, the Chief Operating Officer, Institutional Services at Loomis Sayles, manages the operational delivery of investment solutions to the firm's large-scale institutional clients. Overseeing the client service infrastructure, Kuchar ensures that institutional mandates receive the highest level of operational support and reporting accuracy. This role involves coordinating with portfolio management and compliance teams to meet the complex regulatory and reporting requirements of global institutional investors. By optimizing the client onboarding and service lifecycle, the Chief Operating Officer, Institutional Services enhances the firm's reputation for reliability and transparency. Erick Kuchar also works to integrate client feedback into the firm's operational processes to drive continuous improvement. Through the management of these critical service functions, Kuchar supports the firm's objective of building enduring partnerships with institutional entities worldwide. This leadership role focuses on the operational excellence required to sustain the firm's global institutional presence.

    James Lombardo - Chief Information Officer

    James Lombardo, the Chief Information Officer at Loomis Sayles, architects the digital infrastructure required to support sophisticated investment management activities. Overseeing the firm's data architecture and information systems, Lombardo ensures that portfolio managers possess the real-time analytics necessary for informed decision-making. This role involves managing complex cybersecurity frameworks to protect sensitive client data across global operations. By modernizing legacy systems, the Chief Information Officer enhances the efficiency of the firm's investment research processes. James Lombardo also collaborates with other C-suite leaders to integrate advanced data modeling into the broader investment strategy. Through the implementation of scalable technology solutions, Lombardo supports the firm's ability to handle large-scale institutional mandates. This leadership function remains critical to maintaining the technological edge required for success in the highly competitive global investment management industry.
    James Lombardo

    Christian Dietz - Chief Technology Officer

    Christian Dietz, the Chief Technology Officer at Loomis Sayles, drives the development of proprietary software and technical tools that empower the firm's investment teams. Overseeing the engineering department, Dietz ensures the continuous innovation of trading platforms and research applications. This role involves building robust, high-performance computing environments that facilitate rapid execution of complex investment strategies. By prioritizing the development of cutting-edge financial technology, the Chief Technology Officer enables the firm to maintain its market-leading position in investment management. Christian Dietz also coordinates with the broader technology leadership to ensure seamless integration between infrastructure and application layers. Through the deployment of advanced algorithmic tools, Dietz supports the firm's objective of providing precise, data-driven insights to institutional clients. This leadership role remains essential for sustaining the firm's technological superiority in the global financial services sector.
    Christian Dietz

    Debbie Lewis - Chief Human Resources Officer

    Debbie Lewis, the Chief Human Resources Officer at Loomis Sayles, directs the firm's talent acquisition, development, and retention strategies. Overseeing the human capital function, Lewis ensures that the organization attracts top-tier investment professionals capable of upholding the firm's high standards of research and client service. This role involves designing comprehensive training programs that foster professional growth and leadership development across all levels of the firm. By cultivating an inclusive and high-performance culture, the Chief Human Resources Officer strengthens the firm's ability to navigate the competitive landscape of global finance. Debbie Lewis also manages organizational design initiatives to ensure that teams remain agile and responsive to market shifts. Through the alignment of human capital with the firm's strategic goals, Lewis supports the long-term success of the investment management business. This leadership role remains vital for maintaining the intellectual capital that defines the firm's market impact.

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    Frequently Asked Questions Regarding Loomis Sayles Top Executives and Leadership Team

    Who leads Loomis Sayles?
    Loomis Sayles is led by Kevin Charleston (Chairman, Chief Executive Officer & President), along with executives such as Susan Sieker (Chief Financial Officer & Board Member) and John Gidman (Chief Operating Officer).
    Who is part of Loomis Sayles’s executive team?
    The executive team of Loomis Sayles includes leaders such as Kevin Charleston (Chairman, Chief Executive Officer & President), Susan Sieker (Chief Financial Officer & Board Member), John Gidman (Chief Operating Officer) and other senior executives.
    How many executives does Loomis Sayles have?
    Loomis Sayles has 8 executives leading key business areas.
    What roles are included in Loomis Sayles’s leadership team?
    The leadership team of Loomis Sayles includes roles such as Chairman, Chief Executive Officer & President, Chief Financial Officer & Board Member, Chief Operating Officer, Chief Operating Officer, Growth Equity Strategies, Chief Operating Officer, Institutional Services.