Sylvamo Executive and Leadership Team

September, 2026

Leadership Overview

Sylvamo has 5 executives leading key functions including corporate strategy, financial oversight, and human capital management.

Focused on sustainable paper production, Sylvamo delivers high-quality uncoated freesheet solutions across global markets while maintaining a commitment to operational excellence and long-term value creation for stakeholders.

Leadership Roles at Sylvamo

  • Chairman & Chief Executive Officer - Jean-Michel Ribieras
  • Chief Executive Officer & President - Johnathan (John) Sims
  • Senior Vice President & Chief Financial Officer - Don Devlin
  • Senior Vice President, and Chief People Officer - Marcie Vargas
  • Senior Vice President, Chief People Officer - Marcia Vargas
  • Jean-Michel Ribieras - Chairman & Chief Executive Officer

    Jean-Michel Ribieras, the Chairman & Chief Executive Officer at Sylvamo, directs the overarching corporate strategy and global market positioning. Ribieras manages the integration of manufacturing operations across North America, Europe, and Latin America to ensure consistent output of uncoated freesheet and pulp products. By aligning the executive team with long-term growth objectives, the Chairman & Chief Executive Officer optimizes the production of brands like Chamex and Hammermill. This leadership role involves constant engagement with the Board to refine capital allocation and sustainability initiatives. Jean-Michel Ribieras drives the expansion of high-speed inkjet printing paper segments, ensuring competitive advantages in diverse international markets. Through rigorous oversight of mill performance and supply chain efficiency, the Chairman & Chief Executive Officer maintains the company's status as a premier provider of paper solutions. Strategic decision-making remains central to the daily operations overseen by Ribieras.
    Jean-Michel Ribieras

    Johnathan (John) Sims - Chief Executive Officer & President

    Johnathan (John) Sims, the Chief Executive Officer & President at Sylvamo, executes the daily operational agenda and commercial growth strategies. Sims focuses on the North American segment, driving the distribution of imaging and commercial printing papers through retail and e-commerce channels. By coordinating with regional leadership, the Chief Executive Officer & President ensures that brands like Springhill and Accent meet evolving customer demands. Johnathan (John) Sims monitors market trends to adjust production volumes and maintain inventory health across integrated mills. This role requires close collaboration with the executive leadership team to streamline logistics and enhance service delivery for resellers and agents. Through the implementation of lean manufacturing principles, the Chief Executive Officer & President improves operational margins. Sims prioritizes the development of high-performance paper products, ensuring that the company remains a leader in the global uncoated freesheet industry while supporting regional sales targets.
    Johnathan (John) Sims

    Don Devlin - Senior Vice President & Chief Financial Officer

    Don Devlin, the Senior Vice President & Chief Financial Officer at Sylvamo, manages the financial health and fiscal planning of the organization. Devlin oversees capital structure, investor relations, and the rigorous reporting requirements necessary for global operations across three continents. By analyzing the profitability of the Europe, Latin America, and North America segments, the Senior Vice President & Chief Financial Officer provides the data-driven insights required for strategic investment decisions. Don Devlin directs the budgeting process to ensure that manufacturing facilities receive the necessary funding for technological upgrades and efficiency improvements. This leadership role involves mitigating financial risks associated with commodity price fluctuations and currency volatility in international markets. Through the maintenance of strong balance sheets and liquidity, the Senior Vice President & Chief Financial Officer supports the company's ability to fund innovation in paper production. Devlin ensures that all financial activities align with the broader corporate mission of sustainable growth.

    Marcie Vargas - Senior Vice President, and Chief People Officer

    Marcie Vargas, the Senior Vice President, and Chief People Officer at Sylvamo, architects the human capital strategy and organizational culture. Vargas directs talent acquisition, leadership development, and employee engagement initiatives across the global workforce. By fostering a culture of safety and operational excellence, the Senior Vice President, and Chief People Officer ensures that the company attracts and retains top-tier talent in the manufacturing sector. Marcie Vargas manages the alignment of human resources policies with the specific needs of mills and corporate offices in diverse geographic regions. This role involves designing compensation structures and training programs that support the company's commitment to high-quality paper production. Through the implementation of inclusive workplace practices, the Senior Vice President, and Chief People Officer drives organizational agility and performance. Vargas works closely with other executives to ensure that the workforce remains prepared to meet the challenges of the competitive global paper market.

    Marcia Vargas - Senior Vice President, Chief People Officer

    Marcia Vargas, the Senior Vice President, Chief People Officer at Sylvamo, oversees the internal communications and organizational design frameworks. Vargas focuses on the integration of corporate values into the daily operations of the European and Latin American segments. By developing robust performance management systems, the Senior Vice President, Chief People Officer ensures that individual contributions directly support the company's strategic goals for the Jetstar and Chambril brands. Marcia Vargas manages the succession planning process to guarantee leadership continuity across all levels of the organization. This role involves analyzing workforce data to improve retention and productivity in manufacturing environments. Through the promotion of professional development opportunities, the Senior Vice President, Chief People Officer enhances the technical capabilities of the staff. Vargas collaborates with the executive team to build a resilient corporate structure capable of navigating the complexities of the international paper industry while maintaining a focus on employee well-being.

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    Frequently Asked Questions Regarding Sylvamo Top Executives and Leadership Team

    Who leads Sylvamo?
    Sylvamo is led by Jean-Michel Ribieras (Chairman & Chief Executive Officer), along with executives such as Johnathan (John) Sims (Chief Executive Officer & President) and Don Devlin (Senior Vice President & Chief Financial Officer).
    Who is part of Sylvamo’s executive team?
    The executive team of Sylvamo includes leaders such as Jean-Michel Ribieras (Chairman & Chief Executive Officer), Johnathan (John) Sims (Chief Executive Officer & President), Don Devlin (Senior Vice President & Chief Financial Officer) and other senior executives.
    How many executives does Sylvamo have?
    Sylvamo has 5 executives leading key business areas.
    What roles are included in Sylvamo’s leadership team?
    The leadership team of Sylvamo includes roles such as Chairman & Chief Executive Officer, Chief Executive Officer & President, Senior Vice President & Chief Financial Officer, Senior Vice President, and Chief People Officer, Senior Vice President, Chief People Officer.