AltaGas Executive and Leadership Team

July, 2026

Leadership Overview

AltaGas has 5 executives leading key functions including strategy, information technology, operations, finance, and administration.

Driven by a commitment to reliable energy delivery, AltaGas focuses on expanding its regulated utility footprint to ensure stable, predictable cash flows and deliver long-term shareholder value across North America.

Leadership Roles at AltaGas

  • President & Chief Executive Officer - Vernon Yu
  • Executive Vice President & Chief Financial Officer - Shawn Brown
  • Chief Operating Officer - Adrian Chapman
  • Chief Information Officer - Wilma Kumar-Rubock
  • Executive Vice President & Chief Administrative Officer - Corine Bushfield
  • Vernon Yu - President & Chief Executive Officer

    Vernon Yu, the President & Chief Executive Officer at AltaGas, directs the overall strategic vision and operational execution for the North American energy infrastructure company. Overseeing both the regulated natural gas distribution and midstream services segments, Vernon Yu ensures alignment with the company's core mission of providing stable, predictable cash flows. This leadership role involves driving growth initiatives, particularly through the expansion of the regulated utility footprint across the United States and Canada. By fostering strong relationships with stakeholders and guiding the executive team, Vernon Yu champions the long-term shareholder value creation strategy. The Chief Executive Officer's purview encompasses all aspects of the business, from financial performance to market positioning and regulatory compliance, ensuring AltaGas maintains its leadership in the energy sector.
    Vernon Yu

    Shawn Brown - Executive Vice President & Chief Financial Officer

    Shawn Brown, the Executive Vice President & Chief Financial Officer at AltaGas, spearheads the company's financial strategy and fiscal management. Overseeing all financial planning, accounting, treasury, and investor relations functions, Shawn Brown ensures the financial health and stability of the organization. This leadership role is pivotal in supporting AltaGas's strategic objective of generating predictable cash flows and maximizing long-term shareholder value through disciplined capital allocation. By managing the company's financial resources and reporting, the Chief Financial Officer provides critical insights for executive decision-making across both the Utilities and Midstream segments. Shawn Brown's expertise guides the company's financial performance, ensuring compliance with all regulatory and reporting requirements across its North American operations.
    Shawn Brown

    Adrian Chapman - Chief Operating Officer

    Adrian Chapman, the Chief Operating Officer at AltaGas, directs the day-to-day operational activities across the company's extensive energy infrastructure network. Overseeing the seamless functioning of regulated natural gas distribution to over 1.7 million customers and the complex midstream services, Adrian Chapman ensures reliability and efficiency. This critical role involves managing the operational performance of subsidiaries like Washington Gas Light (WGL) and SEMCO Energy, as well as the natural gas gathering, processing, and NGL extraction facilities in Western Canada and the U.S. Midwest. By optimizing resource allocation and implementing best practices in safety and environmental stewardship, the Chief Operating Officer directly supports AltaGas's commitment to stable cash flows and operational excellence. Adrian Chapman's leadership ensures the effective execution of the company's service delivery across all operating regions.

    Wilma Kumar-Rubock - Chief Information Officer

    Wilma Kumar-Rubock, the Chief Information Officer at AltaGas, architects and executes the company's comprehensive information technology strategy. Overseeing all digital infrastructure and cybersecurity measures, Wilma Kumar-Rubock ensures the robust and secure operation of systems supporting both the Utilities and Midstream segments. This leadership position involves driving technological innovation to enhance operational efficiency and customer service across the diverse geographic regions AltaGas serves, including Washington D.C., Maryland, Virginia, Michigan, British Columbia, Nova Scotia, Northwest Territories, and Nunavut. By managing the integration of new technologies and optimizing existing platforms, the Chief Information Officer directly supports the company's strategic focus on stable cash flows and long-term value. Wilma Kumar-Rubock's responsibilities extend to data management and analytics, crucial for informed decision-making across the enterprise.

    Corine Bushfield - Executive Vice President & Chief Administrative Officer

    Corine Bushfield, the Executive Vice President & Chief Administrative Officer at AltaGas, directs critical administrative functions that underpin the company's operational success. Overseeing human resources, legal, corporate governance, and corporate affairs, Corine Bushfield ensures the efficient and compliant functioning of the organization across its North American footprint. This leadership position is integral to fostering a positive corporate culture and managing the complex regulatory and legal landscapes within which AltaGas operates, particularly concerning its regulated utility services in the United States and Canada. By optimizing internal processes and supporting executive leadership, the Chief Administrative Officer directly contributes to the company's strategic goals of stable cash flows and sustained shareholder value. Corine Bushfield's purview ensures robust support systems are in place for all business segments.
    Corine Bushfield

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    Frequently Asked Questions Regarding AltaGas Top Executives and Leadership Team

    Who leads AltaGas?
    AltaGas is led by Vernon Yu (President & Chief Executive Officer), along with executives such as Shawn Brown (Executive Vice President & Chief Financial Officer) and Adrian Chapman (Chief Operating Officer).
    Who is part of AltaGas’s executive team?
    The executive team of AltaGas includes leaders such as Vernon Yu (President & Chief Executive Officer), Shawn Brown (Executive Vice President & Chief Financial Officer), Adrian Chapman (Chief Operating Officer) and other senior executives.
    How many executives does AltaGas have?
    AltaGas has 5 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, Chief Operating Officer, Chief Information Officer, Executive Vice President & Chief Administrative Officer.