Columbia Association Executive and Leadership Team

May, 2026

Leadership Overview

Columbia Association has 6 executives leading key functions including strategy, operations, finance, and administration.

Driven by a commitment to community growth, Columbia Association sustains a vision of diversity, respect for the land, and individual development through a comprehensive array of services and open space preservation.

Leadership Roles at Columbia Association

  • President & Chief Executive Officer - Shawn MacInnes
  • President & Chief Executive Officer - Phillip Nelson
  • Interim President & Chief Executive Officer - Dennis Mattey
  • Chief Financial Officer - Susan Krabbe
  • Senior VP, Administration & Chief Financial Officer - Shon McCollum
  • Chief Operating Officer - Rob Goldman
  • Shawn MacInnes - President & Chief Executive Officer

    Shawn MacInnes, the President & Chief Executive Officer at Columbia Association, directs the overarching strategy and operational execution for the organization. MacInnes guides the association's commitment to fostering individual growth and respecting the environment, aligning all departments with the founding vision. This leadership role involves ensuring the vibrant town center, recreational facilities, and extensive park systems effectively serve residents. MacInnes oversees the integration of community feedback into strategic planning, maintaining Columbia's status as a premier community. The President & Chief Executive Officer drives initiatives that enhance the quality of life for all residents, upholding the organization's core values. Shawn MacInnes ensures the long-term sustainability and continued development of the community's assets and services.

    Phillip Nelson - President & Chief Executive Officer

    Phillip Nelson, the President & Chief Executive Officer at Columbia Association, spearheads the strategic direction and comprehensive management of the organization. Nelson champions the core mission of cultivating a diverse and respectful community that supports individual development. This executive position involves overseeing the broad spectrum of services, from the town center's amenities to the extensive network of parks and pathways. Phillip Nelson ensures that the association's operations remain aligned with the founding principles, emphasizing the rational potential of the community. The President & Chief Executive Officer drives initiatives focused on resident well-being and community enhancement. Nelson's leadership ensures the preservation and growth of Columbia's unique character and assets.

    Dennis Mattey - Interim President & Chief Executive Officer

    Dennis Mattey, the Interim President & Chief Executive Officer at Columbia Association, provides critical leadership during a transitional period, ensuring continuity in strategic operations and community service delivery. Mattey guides the organization's commitment to its founding vision of fostering diversity, respecting the environment, and promoting individual growth. This role involves overseeing the management of the association's extensive recreational, cultural, and community services, as well as the preservation of nearly 3,600 acres of open space. Dennis Mattey ensures that neighborhood amenities, including parks, lakes, and pathways, continue to enhance resident life. The Interim President & Chief Executive Officer focuses on maintaining operational excellence and stakeholder engagement, upholding the high standards envisioned for Columbia.

    Susan Krabbe - Chief Financial Officer

    Susan Krabbe, the Chief Financial Officer at Columbia Association, manages the organization's financial health, overseeing all fiscal operations and strategic financial planning. Krabbe ensures robust financial controls and reporting mechanisms are in place to support the association's mission and extensive service offerings. This critical role involves budgeting, forecasting, and resource allocation across departments, including recreational facilities, open space management, and community programs. Susan Krabbe safeguards the financial integrity of the association, enabling continued investment in community development and resident services. The Chief Financial Officer provides essential financial insights to guide strategic decision-making and ensure long-term sustainability.

    Shon McCollum - Senior VP, Administration & Chief Financial Officer

    Shon McCollum, the Senior VP, Administration & Chief Financial Officer at Columbia Association, oversees both the administrative functions and the comprehensive financial management of the organization. McCollum ensures that administrative processes are streamlined and efficient, supporting the delivery of a wide array of community services. This dual executive role involves managing financial resources, developing budgets, and ensuring fiscal responsibility across all operational areas, from parks to town center amenities. Shon McCollum provides strategic financial guidance and administrative oversight, aligning departmental operations with the association's core vision. The Senior VP, Administration & Chief Financial Officer plays a key part in maintaining the organization's operational stability and financial health.

    Rob Goldman - Chief Operating Officer

    Rob Goldman, the Chief Operating Officer at Columbia Association, directs the day-to-day operational functions and service delivery across the organization. Goldman ensures the effective management of Columbia's diverse amenities, including the town center, recreational facilities, and extensive park systems, aligning these with the community's vision. This executive role involves optimizing the efficiency of all operational departments, from childcare services to pathway maintenance, ensuring they meet high standards of quality and accessibility. Rob Goldman oversees the implementation of strategies that enhance resident experience and community engagement. The Chief Operating Officer drives operational improvements that support the association's mission of fostering growth and respecting the land, ensuring seamless service provision.

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    Frequently Asked Questions Regarding Columbia Association Top Executives and Leadership Team

    Who leads Columbia Association?
    Columbia Association is led by Shawn MacInnes (President & Chief Executive Officer), along with executives such as Phillip Nelson (President & Chief Executive Officer) and Dennis Mattey (Interim President & Chief Executive Officer).
    Who is part of Columbia Association’s executive team?
    The executive team of Columbia Association includes leaders such as Shawn MacInnes (President & Chief Executive Officer), Phillip Nelson (President & Chief Executive Officer), Dennis Mattey (Interim President & Chief Executive Officer) and other senior executives.
    How many executives does Columbia Association have?
    Columbia Association has 6 executives leading key business areas.
    What roles are included in Columbia Association’s leadership team?
    The leadership team of Columbia Association includes roles such as President & Chief Executive Officer, President & Chief Executive Officer, Interim President & Chief Executive Officer, Chief Financial Officer, Senior VP, Administration & Chief Financial Officer.