Westlake Executive and Leadership Team

October, 2026

Leadership Overview

Westlake has 6 executives leading key functions including strategy, information technology, human resources, financial management, family association oversight, and regional manufacturing operations.

Focused on delivering essential materials for global infrastructure, Westlake maintains a commitment to sustainable manufacturing and the development of high-performance products that support modern living standards across international markets.

Leadership Roles at Westlake

  • President & Chief Executive Officer - Jean-Marc Gilson
  • Senior VP & Chief Financial Officer - Jonathan Baksht
  • President, Family Association, Westlake Chemical - Earl Vital
  • President, (Westlake Huasu) - Yaoming Li
  • Chief Information Officer - Mark Schmidt
  • Senior VP, Chief Human Resources Officer - Katy Theroux
  • Jean-Marc Gilson - President & Chief Executive Officer

    Jean-Marc Gilson, the President & Chief Executive Officer at Westlake, directs the overarching corporate strategy and global operational footprint. Gilson manages the integration of the Performance and Essential Materials segment with the Housing and Infrastructure Products division to ensure long-term value creation. By aligning manufacturing capabilities with international market demands, the President & Chief Executive Officer optimizes production efficiency across North America, Europe, and Asia. This leadership role involves constant engagement with the Board to refine capital allocation and sustainability initiatives. Jean-Marc Gilson maintains a sharp focus on expanding the company's reach in the chemical processing and construction sectors. Through rigorous oversight of organizational performance, Gilson drives the company toward achieving ambitious growth targets while maintaining high safety and environmental standards. The President & Chief Executive Officer ensures that all business units remain competitive in the evolving global landscape of essential materials and infrastructure solutions.
    Jean-Marc Gilson

    Jonathan Baksht - Senior VP & Chief Financial Officer

    Jonathan Baksht, the Senior VP & Chief Financial Officer at Westlake, manages the financial health and capital structure of the organization. Baksht oversees all fiscal planning, reporting, and investor relations activities to ensure transparency and growth. By analyzing market trends in the Performance and Essential Materials segment, the Senior VP & Chief Financial Officer provides the strategic insights necessary for informed decision-making regarding capital expenditures and acquisitions. This role involves coordinating with the Board to maintain a strong balance sheet while supporting the company's international expansion efforts. Jonathan Baksht drives financial discipline across all business units, ensuring that resources are allocated effectively to support the production of PVC, epoxy resins, and infrastructure products. Through rigorous risk management and financial forecasting, Baksht secures the company's ability to navigate volatile commodity markets. The Senior VP & Chief Financial Officer ensures that the company remains well-positioned to deliver consistent value to shareholders and stakeholders.
    Jonathan Baksht

    Earl Vital - President, Family Association, Westlake Chemical

    Earl Vital, the President, Family Association, Westlake Chemical at Westlake, directs the engagement and communication strategies for the broader corporate family. Vital oversees initiatives that maintain the company's core values and heritage while supporting the integration of new business units. By fostering strong relationships across the organization, the President, Family Association, Westlake Chemical ensures that the company's mission remains central to all operational activities. This role involves coordinating with leadership to promote a unified corporate identity across international regions. Earl Vital drives programs that enhance internal cohesion and support the long-term vision of the company's founders. Through the management of family-oriented corporate initiatives, Vital strengthens the connection between the workforce and the company's strategic objectives in the housing and infrastructure sectors. The President, Family Association, Westlake Chemical ensures that the company's unique culture continues to thrive as the business expands its global footprint in the performance materials market.

    Yaoming Li - President, (Westlake Huasu)

    Yaoming Li, the President, (Westlake Huasu) at Westlake, directs the manufacturing and marketing operations within the specific regional context of the Huasu division. Li oversees the production of essential materials and infrastructure products, ensuring that regional output meets the high quality standards required for international markets. By managing local supply chains and operational logistics, the President, (Westlake Huasu) optimizes the delivery of PVC and other specialty resins to regional customers. This role involves close coordination with the corporate office to align regional production targets with the company's global strategy. Yaoming Li drives operational excellence by implementing advanced manufacturing processes that improve efficiency and reduce waste. Through the oversight of regional market expansion, Li ensures that the company maintains a strong competitive position in the local construction and industrial sectors. The President, (Westlake Huasu) manages the day-to-day operations of the facility, ensuring that all activities support the company's broader commitment to sustainable and high-performance material production.

    Mark Schmidt - Chief Information Officer

    Mark Schmidt, the Chief Information Officer at Westlake, architects the digital infrastructure necessary to support complex manufacturing and supply chain operations. Schmidt oversees the implementation of advanced data analytics and cybersecurity protocols to protect the integrity of global chemical processing systems. By modernizing enterprise resource planning tools, the Chief Information Officer enhances operational visibility across the Performance and Essential Materials segment. This role requires close collaboration with other C-suite leaders to align technological investments with the company's broader strategic goals. Mark Schmidt drives digital transformation initiatives that improve efficiency for construction contractors and supply warehouses. Through the deployment of scalable cloud solutions, Schmidt ensures that the company maintains a robust technological edge in the competitive housing and infrastructure market. The Chief Information Officer manages the integration of digital systems across international operations, ensuring seamless communication and data flow between regional facilities and the corporate headquarters.

    Katy Theroux - Senior VP, Chief Human Resources Officer

    Katy Theroux, the Senior VP, Chief Human Resources Officer at Westlake, designs and executes the global talent strategy to support a diverse workforce across multiple continents. Theroux oversees organizational development, compensation structures, and employee engagement programs that align with the company's mission in the performance materials sector. By fostering a culture of safety and innovation, the Senior VP, Chief Human Resources Officer ensures that the company attracts and retains top-tier talent for its manufacturing and infrastructure divisions. This leadership role involves partnering with executive management to drive cultural transformation and workforce planning. Katy Theroux manages the implementation of human capital policies that support the company's expansion in international markets. Through the development of comprehensive training and leadership programs, Theroux strengthens the internal capabilities required to meet the demands of the chemical and construction industries. The Senior VP, Chief Human Resources Officer maintains a focus on building a resilient and high-performing organization.

    Frequently Asked Questions Regarding Westlake Top Executives and Leadership Team

    Who leads Westlake?
    Westlake is led by Jean-Marc Gilson (President & Chief Executive Officer), along with executives such as Jonathan Baksht (Senior VP & Chief Financial Officer) and Earl Vital (President, Family Association, Westlake Chemical).
    Who is part of Westlake’s executive team?
    The executive team of Westlake includes leaders such as Jean-Marc Gilson (President & Chief Executive Officer), Jonathan Baksht (Senior VP & Chief Financial Officer), Earl Vital (President, Family Association, Westlake Chemical) and other senior executives.
    How many executives does Westlake have?
    Westlake has 6 executives leading key business areas.
    What roles are included in Westlake’s leadership team?
    The leadership team of Westlake includes roles such as President & Chief Executive Officer, Senior VP & Chief Financial Officer, President, Family Association, Westlake Chemical, President, (Westlake Huasu), Chief Information Officer.