SoCalGas Executive and Leadership Team

June, 2026

Leadership Overview

SoCalGas has 6 executives leading key functions including strategy, operations, and finance.

Dedicated to powering California's future, SoCalGas drives innovation in natural gas distribution, ensuring reliable energy delivery and advancing sustainable solutions for millions of customers.

Leadership Roles at SoCalGas

  • Chief Executive Officer - Thompson Barnard
  • Principal & Chief Executive Officer - Carolyn Williams
  • Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer - Sara Mijares
  • Senior Vice President & Chief Financial Officer - Valerie Bille
  • Senior VP & Chief Financial Officer - Mia DeMontigny
  • Chief Operating Officer - Jimmie Cho
  • Thompson Barnard - Chief Executive Officer

    Thompson Barnard, the Chief Executive Officer at SoCalGas, directs the company's overall strategic vision and operational execution. Barnard guides the organization's commitment to safe, reliable, and increasingly sustainable natural gas service across Southern California. This leadership involves fostering innovation in energy delivery and ensuring alignment with regulatory requirements and customer needs. Barnard's focus extends to driving growth initiatives and enhancing operational efficiency throughout the extensive natural gas distribution network. The Chief Executive Officer's mandate includes cultivating strong stakeholder relationships and positioning SoCalGas for long-term success in a dynamic energy landscape. Thompson Barnard ensures the company's strategic objectives translate into tangible results, maintaining SoCalGas's position as a vital energy provider.

    Carolyn Williams - Principal & Chief Executive Officer

    Carolyn Williams, the Principal & Chief Executive Officer at SoCalGas, spearheads the company's core mission and strategic direction. Williams oversees the comprehensive natural gas distribution operations, ensuring the delivery of safe and reliable energy to Southern California communities. This executive role involves driving forward the company's commitment to sustainability and innovation in energy infrastructure. The Principal & Chief Executive Officer's responsibilities encompass fostering a culture of excellence and accountability across all departments. Carolyn Williams directs efforts to enhance customer service and maintain robust operational integrity. This leadership position is critical for navigating the evolving energy sector and securing the company's future growth and market presence.
    Carolyn Williams

    Sara Mijares - Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer

    Sara Mijares, the Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer at SoCalGas, directs the company's financial operations and reporting. Mijares oversees all aspects of financial management, including accounting, treasury, and fiscal planning for the natural gas distribution network. This multifaceted role ensures the accuracy and integrity of financial statements and compliance with regulatory standards. The Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer's responsibilities extend to managing capital allocation and financial risk. Sara Mijares plays a pivotal part in maintaining the financial health and stability of SoCalGas, supporting strategic investments and operational expenditures.

    Valerie Bille - Senior Vice President & Chief Financial Officer

    Valerie Bille, the Senior Vice President & Chief Financial Officer at SoCalGas, leads the company's comprehensive financial strategy and oversight. Bille directs all financial planning, accounting, treasury, and investor relations functions, ensuring robust fiscal management for the natural gas distribution enterprise. This executive position involves safeguarding the company's financial assets and optimizing capital structure to support operational needs and growth objectives. The Senior Vice President & Chief Financial Officer's mandate includes driving financial performance and ensuring compliance with all relevant financial regulations. Valerie Bille is instrumental in guiding the company's financial resilience and long-term economic viability.
    Valerie Bille

    Mia DeMontigny - Senior VP & Chief Financial Officer

    Mia DeMontigny, the Senior VP & Chief Financial Officer at SoCalGas, oversees the financial health and strategic fiscal direction of the organization. DeMontigny directs the company's financial operations, including accounting, treasury, and financial planning, ensuring efficient resource allocation for natural gas distribution. This leadership role is critical for maintaining financial integrity and supporting the company's operational and capital investment strategies. The Senior VP & Chief Financial Officer's responsibilities encompass managing financial risks and ensuring compliance with industry standards. Mia DeMontigny drives financial discipline and contributes significantly to the company's sustained growth and market position.
    Mia DeMontigny

    Jimmie Cho - Chief Operating Officer

    Jimmie Cho, the Chief Operating Officer at SoCalGas, manages the day-to-day operational functions critical to natural gas distribution. Cho oversees the extensive infrastructure, ensuring the safe, reliable, and efficient delivery of energy across Southern California. This leadership role involves directing maintenance, construction, and emergency response teams to uphold service standards. The Chief Operating Officer's purview includes optimizing operational processes and implementing technological advancements to enhance system integrity and performance. Jimmie Cho drives initiatives focused on operational excellence and cost-effectiveness, directly impacting the company's ability to serve its customer base. This executive ensures seamless execution of the company's service commitments.
    Jimmie Cho

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    Frequently Asked Questions Regarding SoCalGas Top Executives and Leadership Team

    Who leads SoCalGas?
    SoCalGas is led by Thompson Barnard (Chief Executive Officer), along with executives such as Carolyn Williams (Principal & Chief Executive Officer) and Sara Mijares (Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer).
    Who is part of SoCalGas’s executive team?
    The executive team of SoCalGas includes leaders such as Thompson Barnard (Chief Executive Officer), Carolyn Williams (Principal & Chief Executive Officer), Sara Mijares (Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer) and other senior executives.
    How many executives does SoCalGas have?
    SoCalGas has 6 executives leading key business areas.
    What roles are included in SoCalGas’s leadership team?
    The leadership team of SoCalGas includes roles such as Chief Executive Officer, Principal & Chief Executive Officer, Acting Chief Financial Officer, Treasurer, Controller & Chief Accounting Officer, Senior Vice President & Chief Financial Officer, Senior VP & Chief Financial Officer.