BerryDunn Executive and Leadership Team

August, 2026

Leadership Overview

BerryDunn has 5 executives leading key functions including strategy, human resources, operational assurance, tax advisory, and market growth.

Driven by a commitment to client success, BerryDunn delivers exceptional accounting and consulting services while helping organizations across the United States create, grow, and protect value through integrity and deep industry expertise.

Leadership Roles at BerryDunn

  • Chief Executive Officer - Sarah Belliveau
  • Chief Operating Officer, Assurance, Tax & Advisory Services - Tammy Brunetti
  • Chief Operating Officer, Assurance, Tax & Advisory Services - Renee Bishop
  • 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 oversees the alignment of service delivery across diverse sectors including government, healthcare, and higher education. By fostering a culture of integrity and expertise, the Chief Executive Officer ensures the firm maintains a competitive edge in the national accounting and consulting landscape. Sarah Belliveau drives long-term growth initiatives while managing relationships with the Board to ensure fiscal health and operational excellence. The Chief Executive Officer monitors market trends to anticipate client needs, ensuring the firm remains at the forefront of industry innovation. Through consistent leadership, Belliveau guides the organization toward sustainable expansion and high-quality service standards. This executive role requires balancing complex client demands with internal resource optimization, ultimately securing the firm's reputation as a trusted advisor for clients coast to coast.

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

    Tammy Brunetti, the Chief Operating Officer, Assurance, Tax & Advisory Services at BerryDunn, manages the operational execution of core financial service lines. Brunetti focuses on the delivery of assurance and tax solutions, ensuring that technical standards meet the rigorous requirements of government and commercial clients. By optimizing internal workflows, the Chief Operating Officer, Assurance, Tax & Advisory Services drives efficiency across the firm's service delivery teams. Tammy Brunetti coordinates with other C-suite leaders to align operational capacity with market demand, particularly within the healthcare and financial services sectors. This role involves overseeing the quality control processes that define the firm's reputation for excellence. Through the management of complex advisory projects, Brunetti ensures that client engagements remain profitable and impactful. The Chief Operating Officer, Assurance, Tax & Advisory Services maintains a focus on operational scalability, allowing the firm to support a growing client base across the United States.
    Tammy Brunetti

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

    Renee Bishop, the Chief Operating Officer, Assurance, Tax & Advisory Services at BerryDunn, directs the strategic implementation of specialized consulting and technology-focused advisory services. Bishop oversees the integration of high-tech solutions into the firm's traditional accounting framework, ensuring that clients receive modern, data-driven insights. By managing the operational infrastructure for these specific service lines, the Chief Operating Officer, Assurance, Tax & Advisory Services supports the firm's expansion into new market segments. Renee Bishop coordinates cross-functional teams to deliver comprehensive consulting engagements that address the unique challenges of not-for-profit and commercial entities. This leadership role involves refining service methodologies to enhance client outcomes and operational productivity. Through the oversight of these critical advisory functions, Bishop ensures that the firm remains agile in a rapidly evolving business environment. The Chief Operating Officer, Assurance, Tax & Advisory Services drives the firm's commitment to innovation by aligning technical expertise with client-specific strategic goals.
    Renee Bishop

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

    Cydney Runions, the Culture Chief Engagement Officer & Chief Human Resources Officer at BerryDunn, architects the internal environment necessary for professional excellence. Runions manages talent acquisition, employee development, and organizational culture initiatives to support the firm's diverse workforce. By implementing robust engagement strategies, the Culture Chief Engagement Officer & Chief Human Resources Officer ensures that staff members remain aligned with the core mission of delivering exceptional service. Cydney Runions oversees the integration of human capital management with broader business goals, facilitating a workplace that attracts top-tier accounting and consulting talent. This leadership role involves designing programs that promote professional growth and retention across all regional operations. Through the cultivation of a supportive and high-performing culture, Runions directly impacts the firm's ability to provide consistent value to clients. The Culture Chief Engagement Officer & Chief Human Resources Officer maintains organizational health by prioritizing employee well-being and professional development.

    Colleen Oakley - Chief Sales & Marketing Officer

    Colleen Oakley, the Chief Sales & Marketing Officer at BerryDunn, architects the firm's market presence and business development strategy. Oakley oversees the branding, lead generation, and client acquisition efforts that fuel the firm's growth across all industry verticals. By analyzing market data and competitive positioning, the Chief Sales & Marketing Officer ensures that the firm's value proposition resonates with target audiences in the government, healthcare, and commercial sectors. Colleen Oakley manages the alignment between marketing campaigns and the firm's service capabilities, facilitating a cohesive approach to client engagement. This leadership role involves directing the sales pipeline and fostering long-term relationships with key stakeholders. Through the execution of targeted outreach strategies, Oakley expands the firm's footprint and strengthens its reputation for exceptional service. The Chief Sales & Marketing Officer drives revenue growth by identifying emerging opportunities and communicating the firm's expertise to a broad, national client base.

    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 Tammy Brunetti (Chief Operating Officer, Assurance, Tax & Advisory 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), Tammy Brunetti (Chief Operating Officer, Assurance, Tax & Advisory Services), Renee Bishop (Chief Operating Officer, Assurance, Tax & Advisory Services) and other senior executives.
    How many executives does BerryDunn have?
    BerryDunn has 5 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, Assurance, Tax & Advisory Services, Chief Operating Officer, Assurance, Tax & Advisory Services, Culture Chief Engagement Officer & Chief Human Resources Officer, Chief Sales & Marketing Officer.