Expand Executive and Leadership Team

June, 2026

Leadership Overview

Expand has 8 executives leading key functions including strategy, finance, operations, information technology, and equipment purchasing.

Driven by responsible development, Expand is dedicated to efficiently producing natural gas to meet national demand while prioritizing sustainability and safety.

Leadership Roles at Expand

  • Chairman, Interim President & Chief Executive Officer - Michael (Mike) Wichterich
  • Chief Financial Officer - Marcel Teunissen
  • Interim Chief Financial Officer - Jennifer Stewart
  • Executive Vice President & Chief Operating Officer - Joshua Viets
  • President, Compression Services - Alan Lavenue
  • President, Circle C Equipment Llc, Purchasing - Rick Collins
  • Vice President & Chief Information Officer - John Christ
  • Chief Operations Officer - Chris Ramson
  • Michael (Mike) Wichterich - Chairman, Interim President & Chief Executive Officer

    Michael (Mike) Wichterich, the Chairman, Interim President & Chief Executive Officer at Expand, directs the overarching strategy and operational execution for the U.S.-based natural gas and energy company. Wichterich guides the integration and ongoing management of operations that emerged from the merger between Chesapeake Energy and Southwestern Energy, positioning Expand as a leading independent natural gas producer. Overseeing the company's extensive shale basin operations across Haynesville and Appalachia, Wichterich ensures the responsible and efficient development of its significant resource base. This leadership involves driving initiatives in natural gas production, marketing, gathering, and compression, with a critical focus on enhancing sustainability, upholding stringent safety standards, and actively reducing environmental impact. Michael (Mike) Wichterich's strategic direction is vital for supplying essential energy to meet national demand while fostering long-term operational excellence and market leadership.
    Michael (Mike) Wichterich

    Marcel Teunissen - Chief Financial Officer

    Marcel Teunissen, the Chief Financial Officer at Expand, manages the comprehensive financial strategy and fiscal operations for the integrated energy company. Teunissen oversees all aspects of financial planning, capital allocation, and investment management, ensuring the financial health and stability of Expand's extensive natural gas production and marketing activities. This role involves close collaboration with operational leaders to align financial objectives with the company's mission of responsible resource development across major shale basins. Marcel Teunissen's financial oversight is critical for supporting Expand's focus on sustainability, safety, and environmental impact reduction, while also ensuring the company can effectively supply energy to meet national demand. The Chief Financial Officer's expertise is essential for navigating market dynamics and driving profitable growth through efficient management of assets and liabilities.
    Marcel Teunissen

    Jennifer Stewart - Interim Chief Financial Officer

    Jennifer Stewart, the Interim Chief Financial Officer at Expand, provides critical financial oversight and guidance during a transitional period for the energy company. Stewart supports the financial planning and analysis functions, ensuring continuity in fiscal management and alignment with Expand's strategic objectives. This role involves close coordination with operational teams to maintain financial discipline across natural gas production, marketing, gathering, and compression activities. Jennifer Stewart's contribution is vital for upholding the company's commitment to responsible resource development, safety, and environmental stewardship across its operations in key shale basins. The Interim Chief Financial Officer's focus ensures that Expand continues to meet national energy demand efficiently and sustainably, reinforcing its market position through sound financial stewardship.

    Joshua Viets - Executive Vice President & Chief Operating Officer

    Joshua Viets, the Executive Vice President & Chief Operating Officer at Expand, directs the day-to-day operational execution and efficiency across the company's extensive natural gas production and infrastructure network. Viets oversees the critical functions of natural gas production, gathering, compression, and marketing, ensuring seamless integration of operations across major shale basins like Haynesville and Appalachia. This leadership role is central to Expand's commitment to responsible and efficient resource development, emphasizing stringent safety protocols and the reduction of environmental impact. Joshua Viets' operational management ensures the reliable supply of energy to meet national demand, while also driving innovation in operational processes to enhance sustainability. The Executive Vice President & Chief Operating Officer's strategic oversight guarantees that Expand maintains its position as a leading independent natural gas producer through optimized performance and adherence to best practices.

    Alan Lavenue - President, Compression Services

    Alan Lavenue, the President, Compression Services at Expand, leads the specialized division focused on the critical infrastructure supporting natural gas operations. Lavenue directs the strategic development, deployment, and maintenance of compression services essential for efficient natural gas gathering and transportation across Expand's operational footprint. This role is integral to ensuring the smooth flow of resources from production sites in major shale basins to market, directly impacting the company's overall efficiency and reliability. Alan Lavenue's leadership ensures that compression services meet the highest standards of safety and environmental compliance, supporting Expand's broader mission of responsible energy development. The President, Compression Services' expertise is vital for optimizing the company's infrastructure and contributing to the consistent supply of energy to meet national demand.

    Rick Collins - President, Circle C Equipment Llc, Purchasing

    Rick Collins, the President, Circle C Equipment Llc, Purchasing at Expand, oversees the strategic procurement and management of essential equipment for the company's operations. Collins directs the purchasing functions, ensuring that Expand acquires the necessary machinery and resources to support its natural gas production, gathering, and compression activities across major shale basins. This role is critical for maintaining operational efficiency and cost-effectiveness, directly contributing to the company's ability to develop its resource base responsibly. Rick Collins' purchasing strategies are aligned with Expand's commitment to safety and sustainability, ensuring that all acquired equipment meets stringent standards. The President, Circle C Equipment Llc, Purchasing's oversight is vital for supporting the reliable supply of energy to meet national demand and reinforcing Expand's position as a leading independent producer.

    John Christ - Vice President & Chief Information Officer

    John Christ, the Vice President & Chief Information Officer at Expand, architects and manages the company's technology infrastructure and digital strategy. Christ oversees the implementation and maintenance of information systems that support Expand's core operations, including natural gas production, marketing, gathering, and compression. This role is crucial for enhancing operational efficiency, ensuring data security, and driving innovation across the organization, particularly in supporting sustainability and safety initiatives. John Christ's leadership ensures that technology effectively supports the responsible development of the company's resource base across major shale basins. The Vice President & Chief Information Officer's strategic vision enables Expand to leverage digital solutions for optimizing performance, reducing environmental impact, and reliably supplying energy to meet national demand, reinforcing the company's position as a leading independent producer.
    John Christ

    Chris Ramson - Chief Operations Officer

    Chris Ramson, the Chief Operations Officer at Expand, drives the execution of operational strategies across the company's extensive natural gas production and infrastructure network. Ramson oversees the efficient management of production, gathering, compression, and marketing operations, ensuring seamless integration and optimal performance across major shale basins. This leadership is fundamental to Expand's commitment to responsible resource development, emphasizing rigorous safety standards and the minimization of environmental impact. Chris Ramson's operational leadership ensures the consistent and reliable supply of energy to meet national demand, while also fostering advancements in operational processes to enhance sustainability. The Chief Operations Officer's strategic direction guarantees that Expand maintains its status as a leading independent natural gas producer through superior performance and adherence to industry-leading practices.

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    Frequently Asked Questions Regarding Expand Top Executives and Leadership Team

    Who leads Expand?
    Expand is led by Michael (Mike) Wichterich (Chairman, Interim President & Chief Executive Officer), along with executives such as Marcel Teunissen (Chief Financial Officer) and Jennifer Stewart (Interim Chief Financial Officer).
    Who is part of Expand’s executive team?
    The executive team of Expand includes leaders such as Michael (Mike) Wichterich (Chairman, Interim President & Chief Executive Officer), Marcel Teunissen (Chief Financial Officer), Jennifer Stewart (Interim Chief Financial Officer) and other senior executives.
    How many executives does Expand have?
    Expand has 8 executives leading key business areas.
    What roles are included in Expand’s leadership team?
    The leadership team of Expand includes roles such as Chairman, Interim President & Chief Executive Officer, Chief Financial Officer, Interim Chief Financial Officer, Executive Vice President & Chief Operating Officer, President, Compression Services.