Thompson Coburn Executive and Leadership Team

June, 2026

Leadership Overview

Thompson Coburn has 4 executives leading key functions including finance, operations, information technology, and human resources.

Driven by a commitment to legal excellence, Thompson Coburn provides comprehensive legal services, shaping client outcomes through strategic counsel and dedicated advocacy.

Leadership Roles at Thompson Coburn

  • Chief Financial Officer - Mary Ann Hallemann
  • Chief Operating Officer - Allen Capdeboscq
  • Chief Information Officer - Phillip Rightler
  • Chief Human Resources Officer - Jennifer Barton
  • Mary Ann Hallemann - Chief Financial Officer

    Mary Ann Hallemann, the Chief Financial Officer at Thompson Coburn, directs all financial operations and strategic fiscal planning. Overseeing budgeting, forecasting, and financial reporting, the Chief Financial Officer ensures robust financial health and compliance across the firm. This leadership role involves managing investments, optimizing resource allocation, and driving profitability. By analyzing financial data, Mary Ann Hallemann provides critical insights to support executive decision-making and long-term business strategy. Ultimately, Hallemann secures the firm's financial stability and supports its growth initiatives through meticulous financial management.

    Allen Capdeboscq - Chief Operating Officer

    Allen Capdeboscq, the Chief Operating Officer at Thompson Coburn, oversees the firm's day-to-day operational efficiency and strategic execution. Managing administrative functions, resource deployment, and process optimization, the Chief Operating Officer ensures seamless service delivery. This critical position involves enhancing operational workflows, driving productivity, and supporting the firm's strategic objectives. By streamlining operations, Allen Capdeboscq directly contributes to the firm's ability to serve clients effectively and maintain a competitive edge in the legal market. Capdeboscq's leadership ensures the firm operates with maximum efficiency and agility.

    Phillip Rightler - Chief Information Officer

    Phillip Rightler, the Chief Information Officer at Thompson Coburn, architects and directs the firm's technology strategy and infrastructure. Overseeing all IT operations, cybersecurity, and digital transformation initiatives, the Chief Information Officer ensures robust and secure technological support for legal services. This role involves evaluating and implementing innovative solutions to enhance efficiency, data management, and client communication. By driving technological advancements, Phillip Rightler strengthens the firm's operational capabilities and safeguards sensitive client information. Rightler's expertise is crucial for maintaining a cutting-edge technological environment that supports the firm's mission.

    Jennifer Barton - Chief Human Resources Officer

    Jennifer Barton, the Chief Human Resources Officer at Thompson Coburn, leads all aspects of talent management and organizational development. Directing recruitment, employee relations, compensation, and benefits, the Chief Human Resources Officer cultivates a high-performing and supportive work environment. This position involves developing HR strategies that align with the firm's business goals and foster employee engagement. By championing talent initiatives, Jennifer Barton ensures the firm attracts, retains, and develops top legal professionals. Barton's focus on human capital is integral to the firm's sustained success and positive workplace culture.

    Frequently Asked Questions Regarding Thompson Coburn Top Executives and Leadership Team

    Who leads Thompson Coburn?
    Thompson Coburn is led by Mary Ann Hallemann (Chief Financial Officer), along with executives such as Allen Capdeboscq (Chief Operating Officer) and Phillip Rightler (Chief Information Officer).
    Who is part of Thompson Coburn’s executive team?
    The executive team of Thompson Coburn includes leaders such as Mary Ann Hallemann (Chief Financial Officer), Allen Capdeboscq (Chief Operating Officer), Phillip Rightler (Chief Information Officer) and other senior executives.
    How many executives does Thompson Coburn have?
    Thompson Coburn has 4 executives leading key business areas.
    What roles are included in Thompson Coburn’s leadership team?
    The leadership team of Thompson Coburn includes roles such as Chief Financial Officer, Chief Operating Officer, Chief Information Officer, Chief Human Resources Officer.