EisnerAmper Executive and Leadership Team

September, 2026

Leadership Overview

EisnerAmper has 10 executives leading key functions including strategy, financial oversight, operational efficiency, marketing, and organizational management.

Focused on delivering comprehensive accounting and advisory solutions, EisnerAmper drives excellence across healthcare, construction, and real estate sectors while maintaining a robust global presence to support diverse client needs.

Leadership Roles at EisnerAmper

  • Chairman & Chief Executive Officer - Michael Breit
  • Chief Financial Officer - Matthew Boyd
  • Chief Financial Officer, Contract - Lisa Viso
  • Manager, Chief Financial Officer Advisory - Randall Dryden
  • Fractional Chief Financial Officer & Head of Outsourced Finance - Mary Drever
  • Chief Operating Officer - Phillip Ammirato
  • Chief Operating Officer At EA RESIG LLC - Alan Ozur
  • Chief Marketing Officer - Rob Boot
  • Chief of Staff - Jaclyn Rheins
  • Director, Chief of Staff. Growth, Industries, Markets - Henry Lewis
  • Michael Breit - Chairman & Chief Executive Officer

    Michael Breit, the Chairman & Chief Executive Officer at EisnerAmper, directs the overarching strategic vision for the firm. Breit architects long-term growth initiatives while overseeing the integration of audit, tax, and consulting services across global markets. By aligning firm resources with the evolving needs of healthcare and real estate clients, the Chairman & Chief Executive Officer ensures consistent value delivery. This leadership role involves constant collaboration with the Board to refine service delivery models and maintain competitive positioning. Michael Breit monitors market trends to identify expansion opportunities, ensuring the firm remains a leader in professional services. Through rigorous oversight of firm-wide performance, the Chairman & Chief Executive Officer maintains high standards of excellence. Ultimately, Breit secures the firm's reputation for integrity and technical proficiency while driving sustainable financial results across all service lines.
    Michael Breit

    Matthew Boyd - Chief Financial Officer

    Matthew Boyd, the Chief Financial Officer at EisnerAmper, manages the fiscal health and capital allocation strategies of the organization. Boyd oversees financial reporting, budgeting, and treasury functions to support the firm's expansive service portfolio. By optimizing internal financial controls, the Chief Financial Officer ensures operational efficiency across all departments. This role requires close coordination with executive leadership to evaluate investment opportunities and manage risk in a complex regulatory environment. Matthew Boyd drives the financial planning process, providing data-driven insights that inform strategic decision-making. The Chief Financial Officer maintains transparency with stakeholders while ensuring the firm possesses the necessary liquidity to pursue growth initiatives. Through disciplined fiscal management, Boyd supports the firm's ability to provide high-quality audit and advisory services to clients in the construction and law sectors, ultimately strengthening the firm's market position.

    Lisa Viso - Chief Financial Officer, Contract

    Lisa Viso, the Chief Financial Officer, Contract at EisnerAmper, directs specialized financial advisory engagements for external clients. Viso architects tailored financial strategies that address the unique needs of businesses requiring outsourced accounting and fiscal management. By providing high-level financial oversight, the Chief Financial Officer, Contract ensures that clients maintain compliance and operational stability. This role involves analyzing client financial data to identify growth opportunities and mitigate risks in sectors like real estate and law. Lisa Viso coordinates with internal teams to deliver comprehensive advisory solutions that align with the firm's standards of excellence. The Chief Financial Officer, Contract monitors the performance of client portfolios, offering actionable insights that drive profitability. Through expert financial guidance, Viso supports the firm's commitment to providing flexible, high-impact services that help clients navigate complex financial landscapes and achieve long-term success.

    Randall Dryden - Manager, Chief Financial Officer Advisory

    Randall Dryden, the Manager, Chief Financial Officer Advisory at EisnerAmper, directs the delivery of specialized financial consulting services to clients. Dryden architects solutions that assist organizations in optimizing their financial reporting, budgeting, and cash flow management. By providing expert guidance, the Manager, Chief Financial Officer Advisory helps clients improve their fiscal health and operational efficiency. This role involves working closely with client leadership to implement best practices in financial governance and risk management. Randall Dryden monitors industry-specific trends to ensure that advisory services remain relevant and impactful for clients in sectors such as healthcare and construction. The Manager, Chief Financial Officer Advisory coordinates with internal subject matter experts to provide holistic support for complex financial challenges. Through dedicated client service, Dryden enhances the firm's reputation for delivering high-quality financial advisory solutions that drive measurable business outcomes.
    Randall Dryden

    Mary Drever - Fractional Chief Financial Officer & Head of Outsourced Finance

    Mary Drever, the Fractional Chief Financial Officer & Head of Outsourced Finance at EisnerAmper, directs the firm's outsourced financial services division. Drever architects scalable financial solutions for clients who require high-level fiscal management without a full-time internal hire. By overseeing the delivery of outsourced accounting and financial reporting, the Fractional Chief Financial Officer & Head of Outsourced Finance ensures that clients maintain accurate and compliant financial records. This role involves managing a team of professionals to provide consistent support across various industries, including construction and healthcare. Mary Drever monitors client financial performance, offering strategic advice that helps businesses optimize their operations and achieve growth. The Fractional Chief Financial Officer & Head of Outsourced Finance coordinates with other firm leaders to integrate outsourced services into the broader advisory portfolio. Through expert leadership, Drever ensures that clients receive high-quality financial management that supports their long-term success.

    Phillip Ammirato - Chief Operating Officer

    Phillip Ammirato, the Chief Operating Officer at EisnerAmper, directs the daily business operations and internal infrastructure of the firm. Ammirato architects scalable processes that enhance service delivery across audit, advisory, and tax divisions. By streamlining workflows, the Chief Operating Officer improves productivity and ensures seamless collaboration between regional teams. This leadership role involves managing resource allocation to meet the demands of diverse client industries, including healthcare and real estate. Phillip Ammirato monitors operational metrics to identify bottlenecks and implement corrective measures, ensuring consistent quality across all engagements. The Chief Operating Officer coordinates with other C-suite leaders to align operational capabilities with the firm's broader growth objectives. Through effective management of internal systems, Ammirato supports the firm's commitment to providing exceptional client service while maintaining high levels of operational agility in a competitive global market.

    Alan Ozur - Chief Operating Officer At EA RESIG LLC

    Alan Ozur, the Chief Operating Officer At EA RESIG LLC at EisnerAmper, directs the operational activities of the real estate investment services group. Ozur architects efficient workflows that support the delivery of specialized accounting and advisory services to real estate clients. By managing the day-to-day operations, the Chief Operating Officer At EA RESIG LLC ensures that service delivery remains consistent and high-quality. This role involves overseeing resource allocation and process improvement to meet the specific demands of the real estate market. Alan Ozur coordinates with other firm leaders to align the group's operations with the broader strategic goals of the organization. The Chief Operating Officer At EA RESIG LLC monitors performance metrics to identify areas for growth and operational enhancement. Through effective management, Ozur supports the firm's ability to provide expert financial services to the real estate sector.

    Rob Boot - Chief Marketing Officer

    Rob Boot, the Chief Marketing Officer at EisnerAmper, directs the brand strategy and market positioning for the firm. Boot architects comprehensive campaigns that highlight the firm's expertise in audit, consulting, and financial services. By analyzing market data, the Chief Marketing Officer identifies emerging opportunities within the healthcare and construction sectors to drive client acquisition. This role involves managing digital presence and thought leadership initiatives to reinforce the firm's reputation as a trusted advisor. Rob Boot coordinates with service line leaders to ensure marketing efforts accurately reflect the firm's capabilities and value proposition. The Chief Marketing Officer monitors campaign performance to optimize outreach and maximize return on investment. Through strategic brand management, Boot elevates the firm's visibility, ensuring that potential clients recognize the depth of professional services available, ultimately supporting the firm's long-term growth and market influence.

    Jaclyn Rheins - Chief of Staff

    Jaclyn Rheins, the Chief of Staff at EisnerAmper, directs internal communications and coordinates strategic projects across the executive team. Rheins architects frameworks for organizational alignment, ensuring that leadership initiatives receive proper execution and follow-through. By facilitating cross-departmental collaboration, the Chief of Staff optimizes the flow of information between audit, advisory, and consulting groups. This role involves managing the executive agenda and prioritizing key business objectives to support the firm's mission. Jaclyn Rheins monitors project timelines and resource utilization, providing the necessary support to keep strategic goals on track. The Chief of Staff acts as a liaison between the C-suite and various business units, ensuring clarity and consistency in corporate messaging. Through meticulous planning and execution, Rheins enhances the efficiency of the leadership team, allowing the firm to focus on delivering high-value accounting and financial services to clients.

    Henry Lewis - Director, Chief of Staff. Growth, Industries, Markets

    Henry Lewis, the Director, Chief of Staff. Growth, Industries, Markets at EisnerAmper, directs initiatives focused on market expansion and industry-specific growth. Lewis architects strategies that identify new business opportunities across the firm's core sectors, including healthcare and law. By analyzing market dynamics, the Director, Chief of Staff. Growth, Industries, Markets ensures that the firm's service offerings remain aligned with evolving client needs. This role involves coordinating cross-functional teams to execute growth plans and enhance the firm's market presence. Henry Lewis monitors competitive trends and industry shifts, providing insights that inform strategic decision-making. The Director, Chief of Staff. Growth, Industries, Markets facilitates communication between leadership and business units to ensure consistent execution of growth objectives. Through proactive market analysis and strategic planning, Lewis supports the firm's commitment to expanding its reach and delivering specialized accounting and advisory services to a broader client base.

    Frequently Asked Questions Regarding EisnerAmper Top Executives and Leadership Team

    Who leads EisnerAmper?
    EisnerAmper is led by Michael Breit (Chairman & Chief Executive Officer), along with executives such as Matthew Boyd (Chief Financial Officer) and Lisa Viso (Chief Financial Officer, Contract).
    Who is part of EisnerAmper’s executive team?
    The executive team of EisnerAmper includes leaders such as Michael Breit (Chairman & Chief Executive Officer), Matthew Boyd (Chief Financial Officer), Lisa Viso (Chief Financial Officer, Contract) and other senior executives.
    How many executives does EisnerAmper have?
    EisnerAmper has 10 executives leading key business areas.
    What roles are included in EisnerAmper’s leadership team?
    The leadership team of EisnerAmper includes roles such as Chairman & Chief Executive Officer, Chief Financial Officer, Chief Financial Officer, Contract, Manager, Chief Financial Officer Advisory, Fractional Chief Financial Officer & Head of Outsourced Finance.