CoAdvantage Executive and Leadership Team

May, 2026

Leadership Overview

CoAdvantage has 6 executives leading key functions including information technology, operations, finance, and regional management.

Driven by a commitment to empowering small businesses, CoAdvantage provides integrated HR solutions that enable owners to refocus resources on growth and development, solidifying its market impact across diverse industries.

Leadership Roles at CoAdvantage

  • Chief Financial Officer - Tre Sasser
  • Chief Operating Officer - Kristen Appleman
  • General Manager, President, Florida - Thomas Shehan
  • Founder & President & General Manager - Phillip Carollo
  • Chief Information Officer - Mark Zimmerman
  • Chief Technology Officer - John Hale
  • Tre Sasser - Chief Financial Officer

    Tre Sasser, the Chief Financial Officer at CoAdvantage, directs the company's financial strategy and fiscal operations. Sasser oversees all aspects of financial planning, budgeting, and reporting, ensuring the economic health and sustainability of the organization. This leadership position is crucial for managing the financial intricacies associated with providing comprehensive HR services, including payroll, benefits, and workers' compensation across numerous industries and states. By maintaining rigorous financial discipline, Tre Sasser supports CoAdvantage's capacity to invest in growth and development initiatives for its small business clients. Sasser's financial acumen ensures that the company operates efficiently, enabling it to offer competitive and top-level HR solutions.

    Kristen Appleman - Chief Operating Officer

    Kristen Appleman, the Chief Operating Officer at CoAdvantage, manages the day-to-day operational execution of the company's comprehensive HR services. Appleman oversees the delivery of payroll, benefits, and workers' compensation administration, ensuring adherence to the highest standards of service across all client engagements. This critical position involves optimizing internal processes and workflows to support CoAdvantage's flexible and integrated approach to HR management. By driving operational excellence, Kristen Appleman enables small business owners to concentrate on growth and development, reinforcing the company's role as a trusted outsourcing partner. Appleman's leadership ensures that CoAdvantage consistently provides top-level services, adapting to the evolving needs of the small business community nationwide.

    Thomas Shehan - General Manager, President, Florida

    Thomas Shehan, the General Manager, President, Florida at CoAdvantage, leads the strategic direction and operational oversight for the Florida region. Shehan drives the expansion and delivery of CoAdvantage's specialized HR services, including payroll, benefits, and workers' compensation, tailored to the needs of small businesses within the state. This executive role focuses on strengthening client relationships and ensuring the highest level of service delivery, aligning with the company's mission of empowering business owners. By cultivating regional growth, Thomas Shehan reinforces CoAdvantage's commitment to providing personalized HR management and enabling clients to concentrate on their core business objectives. Shehan's leadership ensures robust market penetration and client satisfaction in Florida.
    Thomas Shehan

    Phillip Carollo - Founder & President & General Manager

    Phillip Carollo, the Founder & President & General Manager at CoAdvantage, established and directs the company's overarching mission and strategic vision. Carollo guides the organization's commitment to providing expert HR outsourcing solutions, encompassing payroll, benefits, and workers' compensation administration for small business owners nationwide. This foundational role involves setting the standard for personalized HR management and fostering an environment of continuous growth and development for clients. By championing an integrated and flexible approach, Phillip Carollo ensures CoAdvantage remains a premier partner for businesses seeking to optimize their HR functions and refocus resources. Carollo's enduring leadership solidifies the company's impact across all states and industries.

    Mark Zimmerman - Chief Information Officer

    Mark Zimmerman, the Chief Information Officer at CoAdvantage, directs the company's technology infrastructure and digital strategy. Overseeing all IT operations, Zimmerman ensures the seamless integration of advanced technological solutions that support CoAdvantage's core HR services, including payroll, benefits administration, and workers' compensation. This leadership role involves architecting scalable systems that enhance data security and operational efficiency across all states. By optimizing the technological backbone, Mark Zimmerman directly contributes to the company's ability to deliver personalized HR management and maintain a competitive edge in the small business community. Zimmerman's focus remains on leveraging innovation to streamline processes and improve client experience, aligning technology investments with strategic business objectives.
    Mark Zimmerman

    John Hale - Chief Technology Officer

    John Hale, the Chief Technology Officer at CoAdvantage, spearheads the development and implementation of cutting-edge technology solutions that underpin the company's HR services. Hale directs the engineering teams responsible for building and maintaining the platforms that manage payroll, benefits, and workers' compensation, ensuring robust and secure operations. This role is pivotal in translating CoAdvantage's vision for personalized HR management into tangible technological advancements. By focusing on innovation, John Hale enhances the company's ability to serve small businesses across all states, providing them with efficient and integrated HR tools. Hale's strategic technology leadership directly supports the company's mission to empower business owners by streamlining complex HR functions.
    John Hale

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    Frequently Asked Questions Regarding CoAdvantage Top Executives and Leadership Team

    Who leads CoAdvantage?
    CoAdvantage is led by Tre Sasser (Chief Financial Officer), along with executives such as Kristen Appleman (Chief Operating Officer) and Thomas Shehan (General Manager, President, Florida).
    Who is part of CoAdvantage’s executive team?
    The executive team of CoAdvantage includes leaders such as Tre Sasser (Chief Financial Officer), Kristen Appleman (Chief Operating Officer), Thomas Shehan (General Manager, President, Florida) and other senior executives.
    How many executives does CoAdvantage have?
    CoAdvantage has 6 executives leading key business areas.
    What roles are included in CoAdvantage’s leadership team?
    The leadership team of CoAdvantage includes roles such as Chief Financial Officer, Chief Operating Officer, General Manager, President, Florida, Founder & President & General Manager, Chief Information Officer.