AltaGas Executive and Leadership Team

September, 2026

Leadership Overview

AltaGas has 6 executives leading key functions including strategy, operations, technology, organizational alignment, financial management, and executive coordination.

Focused on delivering reliable energy infrastructure across North America, AltaGas prioritizes sustainable growth through regulated natural gas distribution and midstream services to create long-term value for customers and shareholders.

Leadership Roles at AltaGas

  • President & Chief Executive Officer - Vern Yu
  • Executive Vice President & Chief Financial Officer - James Harbilas
  • Executive Vice President & Chief Financial Officer - Shawn Brown
  • Chief Operating Officer - Adrian Chapman
  • Chief Information Officer - Wilma Kumar-Rubock
  • Director, Chief of Staff Office - Erin Burns
  • Senior Vice President and Chief of Staff - Rebecca Morley
  • Vern Yu - President & Chief Executive Officer

    Vern Yu, the President & Chief Executive Officer at AltaGas, directs the overarching corporate strategy for the North American energy infrastructure portfolio. Overseeing both the regulated utility segment and the midstream operations, the President & Chief Executive Officer ensures alignment between capital allocation and long-term shareholder value. This leadership role involves managing complex regulatory environments across the United States and Canada to maintain stable cash flows. By optimizing the performance of subsidiaries like Washington Gas Light and SEMCO Energy, Vern Yu drives operational excellence across the entire enterprise. The President & Chief Executive Officer maintains constant communication with the Board to refine the company's market position. Through rigorous oversight of natural gas gathering and processing assets, the President & Chief Executive Officer secures the company's competitive advantage in the energy sector. Ultimately, the President & Chief Executive Officer fosters a culture of safety and efficiency throughout the organization.
    Vern Yu

    James Harbilas - Executive Vice President & Chief Financial Officer

    James Harbilas, the Executive Vice President & Chief Financial Officer at AltaGas, manages the financial health and capital structure of the company's North American energy infrastructure assets. Overseeing the fiscal planning for the utility segment, the Executive Vice President & Chief Financial Officer ensures the availability of capital for regulated distribution projects. This leadership role involves directing financial reporting, treasury operations, and investor relations to maintain market confidence. By optimizing the balance sheet, James Harbilas supports the company's ability to fund long-term growth in the midstream sector. The Executive Vice President & Chief Financial Officer collaborates with the Board to evaluate investment opportunities and manage financial risks associated with energy market volatility. Through rigorous cost management and capital allocation strategies, the Executive Vice President & Chief Financial Officer secures the financial stability required for sustained shareholder value. Ultimately, the Executive Vice President & Chief Financial Officer drives the company's financial performance through disciplined fiscal oversight.

    Shawn Brown - Executive Vice President & Chief Financial Officer

    Shawn Brown, the Executive Vice President & Chief Financial Officer at AltaGas, directs the financial strategy for the company's midstream operations and NGL extraction facilities. Overseeing the economic analysis of gathering and processing assets, the Executive Vice President & Chief Financial Officer ensures that midstream projects deliver predictable returns. This leadership role involves managing the financial risks inherent in commodity markets and transmission operations across the U.S. Midwest and Western Canada. By implementing sophisticated hedging strategies, Shawn Brown protects the company's cash flows from market fluctuations. The Executive Vice President & Chief Financial Officer works closely with operational leaders to evaluate the profitability of new infrastructure investments. Through the oversight of financial planning and analysis, the Executive Vice President & Chief Financial Officer supports the company's strategic expansion in the midstream sector. Ultimately, the Executive Vice President & Chief Financial Officer ensures the financial resilience of the company's midstream business model.
    Shawn Brown

    Adrian Chapman - Chief Operating Officer

    Adrian Chapman, the Chief Operating Officer at AltaGas, manages the daily execution of regulated natural gas distribution services across diverse North American markets. Overseeing the operational reliability of utility subsidiaries, the Chief Operating Officer ensures consistent delivery for 1.7 million residential and industrial customers. This leadership role involves coordinating maintenance schedules and infrastructure upgrades to meet stringent regulatory standards in the United States and Canada. By streamlining field operations and distribution networks, Adrian Chapman improves service efficiency and safety protocols. The Chief Operating Officer collaborates with regional managers to address localized energy demands while maintaining the integrity of the broader utility footprint. Through the implementation of advanced asset management systems, the Chief Operating Officer optimizes the performance of the company's extensive distribution network. Ultimately, the Chief Operating Officer maintains the operational stability required to support the company's long-term growth objectives in the regulated utility sector.

    Wilma Kumar-Rubock - Chief Information Officer

    Wilma Kumar-Rubock, the Chief Information Officer at AltaGas, architects the digital infrastructure supporting the company's energy distribution and midstream operations. Overseeing the integration of data analytics across the utility and midstream segments, the Chief Information Officer ensures secure and efficient information flow throughout the organization. This leadership role involves modernizing legacy systems to enhance operational visibility and decision-making capabilities. By implementing robust cybersecurity frameworks, Wilma Kumar-Rubock protects critical energy infrastructure from emerging digital threats. The Chief Information Officer collaborates with executive leadership to align technology investments with the company's strategic goals for growth and efficiency. Through the deployment of scalable cloud solutions, the Chief Information Officer supports the company's expansive North American operations. Ultimately, the Chief Information Officer drives digital transformation initiatives that improve customer service delivery and operational performance across all business units, ensuring the company remains at the forefront of energy technology.

    Erin Burns - Director, Chief of Staff Office

    Erin Burns, the Director, Chief of Staff Office at AltaGas, coordinates the strategic initiatives and administrative functions within the executive leadership team. Overseeing the flow of information between the C-suite and various business units, the Director, Chief of Staff Office ensures that corporate priorities remain aligned with the company's mission. This leadership role involves managing high-priority projects that span both the utility and midstream segments of the business. By facilitating cross-departmental collaboration, Erin Burns optimizes the execution of key organizational goals. The Director, Chief of Staff Office monitors progress on major infrastructure projects and regulatory filings to ensure timely completion. Through the management of executive communications and internal governance processes, the Director, Chief of Staff Office supports the efficiency of the entire leadership structure. Ultimately, the Director, Chief of Staff Office maintains the operational rhythm necessary for the company to navigate the complexities of the North American energy market effectively.

    Rebecca Morley - Senior Vice President and Chief of Staff

    Rebecca Morley, the Senior Vice President and Chief of Staff at AltaGas, manages the strategic alignment of corporate functions across the North American energy infrastructure portfolio. Overseeing the integration of organizational goals, the Senior Vice President and Chief of Staff ensures that the utility and midstream segments operate in harmony with the company's long-term vision. This leadership role involves leading cross-functional teams to address complex business challenges and improve operational efficiency. By streamlining internal processes, Rebecca Morley enhances the effectiveness of the executive team. The Senior Vice President and Chief of Staff collaborates with department heads to ensure that strategic initiatives receive the necessary resources and support. Through the management of corporate governance and internal communications, the Senior Vice President and Chief of Staff maintains organizational focus on shareholder value. Ultimately, the Senior Vice President and Chief of Staff drives the execution of the company's strategic agenda across all regional operations.

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    Frequently Asked Questions Regarding AltaGas Top Executives and Leadership Team

    Who leads AltaGas?
    AltaGas is led by Vern Yu (President & Chief Executive Officer), along with executives such as James Harbilas (Executive Vice President & Chief Financial Officer) and Shawn Brown (Executive Vice President & Chief Financial Officer).
    Who is part of AltaGas’s executive team?
    The executive team of AltaGas includes leaders such as Vern Yu (President & Chief Executive Officer), James Harbilas (Executive Vice President & Chief Financial Officer), Shawn Brown (Executive Vice President & Chief Financial Officer) and other senior executives.
    How many executives does AltaGas have?
    AltaGas has 7 executives leading key business areas.
    What roles are included in AltaGas’s leadership team?
    The leadership team of AltaGas includes roles such as President & Chief Executive Officer, Executive Vice President & Chief Financial Officer, Executive Vice President & Chief Financial Officer, Chief Operating Officer, Chief Information Officer.