BerryDunn Executive and Leadership Team

September, 2026

Leadership Overview

BerryDunn has 6 executives leading key functions including strategy, human resources, consulting operations, assurance services, tax advisory, and market growth.

Focused on delivering exceptional service across diverse sectors, BerryDunn empowers clients to create, grow, and protect value through deep industry expertise and a constant commitment to long-term success.

Leadership Roles at BerryDunn

  • Chief Executive Officer - Sarah Belliveau
  • Chief Operating Officer, Consulting Services - Charles S.
  • Chief Operating Officer, Assurance, Tax & Advisory Services - Renee Bishop
  • Chief Operating Officer, Assurance, Tax & Advisory Services - Tammy Brunetti
  • Culture Chief Engagement Officer & Chief Human Resources Officer - Cydney Runions
  • Chief Sales & Marketing Officer - Colleen Oakley
  • Sarah Belliveau - Chief Executive Officer

    Sarah Belliveau, the Chief Executive Officer at BerryDunn, directs the overarching strategic vision for the firm. Belliveau architects long-term growth initiatives while ensuring the organization maintains its reputation for integrity across all service lines. By aligning internal resources with the evolving needs of government, healthcare, and commercial clients, the Chief Executive Officer drives operational excellence on a national scale. This leadership role involves constant collaboration with the board to refine service delivery models and expand market reach. Sarah Belliveau monitors performance metrics to guarantee that the firm consistently meets high standards of professional excellence. Through proactive management of firm-wide priorities, the Chief Executive Officer fosters a culture of innovation. Belliveau secures the firm's position as a leader in the accounting and consulting industry by prioritizing client success and sustainable business practices in every decision.

    Charles S. - Chief Operating Officer, Consulting Services

    Charles S., the Chief Operating Officer, Consulting Services at BerryDunn, oversees the execution of complex consulting projects for government, healthcare, and high-tech clients. S. directs the operational workflows that allow the firm to provide specialized guidance to organizations across the United States. By streamlining project management processes, the Chief Operating Officer, Consulting Services ensures that engagements remain efficient and high-impact. This leadership role involves coordinating with cross-functional teams to deliver tailored solutions that address specific industry challenges. Charles S. monitors resource allocation to maintain the firm's high standards of service delivery. Through the implementation of scalable operational frameworks, the Chief Operating Officer, Consulting Services supports the firm's mission to help clients grow and protect value. S. drives continuous improvement in service quality, ensuring that consulting operations remain at the forefront of the many industries served by the firm.

    Renee Bishop - Chief Operating Officer, Assurance, Tax & Advisory Services

    Renee Bishop, the Chief Operating Officer, Assurance, Tax & Advisory Services at BerryDunn, manages the operational delivery of core financial services. Bishop focuses on the technical execution of assurance and tax engagements, ensuring compliance and accuracy for a wide array of clients. By refining the internal processes for audit and tax workflows, the Chief Operating Officer, Assurance, Tax & Advisory Services enhances the firm's ability to provide reliable financial insights. This role involves overseeing the integration of new regulatory standards into daily operations. Renee Bishop coordinates with technical teams to maintain the integrity of financial reporting across the firm's national footprint. Through the optimization of service delivery models, the Chief Operating Officer, Assurance, Tax & Advisory Services supports the firm's commitment to exceptional client service. Bishop drives operational efficiency, ensuring that assurance and tax teams remain agile in a rapidly changing financial landscape.
    Renee Bishop

    Tammy Brunetti - Chief Operating Officer, Assurance, Tax & Advisory Services

    Tammy Brunetti, the Chief Operating Officer, Assurance, Tax & Advisory Services at BerryDunn, leads the strategic expansion of advisory service lines. Brunetti focuses on developing new service offerings that address the emerging needs of not-for-profit and financial services clients. By architecting robust advisory frameworks, the Chief Operating Officer, Assurance, Tax & Advisory Services ensures that the firm provides comprehensive value beyond traditional accounting. This role involves managing the growth of specialized advisory teams and fostering cross-departmental collaboration. Tammy Brunetti monitors market trends to identify opportunities for service innovation. Through the implementation of advanced advisory methodologies, the Chief Operating Officer, Assurance, Tax & Advisory Services strengthens the firm's competitive position. Brunetti drives the adoption of new technologies within the advisory practice, ensuring that the firm remains a trusted partner for clients seeking to navigate complex financial and operational environments.
    Tammy Brunetti

    Cydney Runions - Culture Chief Engagement Officer & Chief Human Resources Officer

    Cydney Runions, the Culture Chief Engagement Officer & Chief Human Resources Officer at BerryDunn, manages the human capital strategy for the entire organization. Runions designs comprehensive programs to attract, develop, and retain top-tier talent across all service sectors. By cultivating an inclusive workplace environment, the Culture Chief Engagement Officer & Chief Human Resources Officer strengthens the firm's internal foundation. This role involves overseeing professional development initiatives that align with the firm's commitment to expertise and integrity. Cydney Runions implements engagement strategies that boost productivity and morale among staff members operating coast to coast. Through the optimization of talent management systems, the Culture Chief Engagement Officer & Chief Human Resources Officer ensures that the workforce remains equipped to handle complex client demands. Runions maintains a focus on organizational health, directly impacting the firm's ability to deliver exceptional service to diverse clients.

    Colleen Oakley - Chief Sales & Marketing Officer

    Colleen Oakley, the Chief Sales & Marketing Officer at BerryDunn, directs the firm's brand positioning and business development strategies. Oakley architects marketing campaigns that highlight the firm's expertise across government, healthcare, and commercial sectors. By aligning sales efforts with the firm's mission, the Chief Sales & Marketing Officer expands the client base on a national level. This role involves overseeing the development of client-facing materials that communicate the value of the firm's services. Colleen Oakley manages the firm's reputation through targeted outreach and strategic communication initiatives. Through the analysis of market data, the Chief Sales & Marketing Officer identifies new growth opportunities and refines the firm's approach to client acquisition. Oakley drives the integration of sales and marketing functions, ensuring that the firm's message remains consistent and impactful while supporting the overall goal of delivering exceptional service to every client.

    Frequently Asked Questions Regarding BerryDunn Top Executives and Leadership Team

    Who leads BerryDunn?
    BerryDunn is led by Sarah Belliveau (Chief Executive Officer), along with executives such as Charles S. (Chief Operating Officer, Consulting Services) and Renee Bishop (Chief Operating Officer, Assurance, Tax & Advisory Services).
    Who is part of BerryDunn’s executive team?
    The executive team of BerryDunn includes leaders such as Sarah Belliveau (Chief Executive Officer), Charles S. (Chief Operating Officer, Consulting Services), Renee Bishop (Chief Operating Officer, Assurance, Tax & Advisory Services) and other senior executives.
    How many executives does BerryDunn have?
    BerryDunn has 6 executives leading key business areas.
    What roles are included in BerryDunn’s leadership team?
    The leadership team of BerryDunn includes roles such as Chief Executive Officer, Chief Operating Officer, Consulting Services, Chief Operating Officer, Assurance, Tax & Advisory Services, Chief Operating Officer, Assurance, Tax & Advisory Services, Culture Chief Engagement Officer & Chief Human Resources Officer.