The Siegfried Group Executive and Leadership Team

September, 2026

Leadership Overview

The Siegfried Group has 10 executives leading key functions including strategic initiatives, financial advisory, talent delivery, and operational management.

Focused on fostering entrepreneurial leadership, The Siegfried Group delivers specialized accounting resource services and advisory solutions to drive professional growth and organizational excellence across diverse markets.

Leadership Roles at The Siegfried Group

  • Chief Executive Officer, Strategic Initiatives Lead, Office of - Jacqueline Siegfried
  • Senior Vice President, Chief Financial Officer - Andrew Lavelle
  • Chief of Staff - Jacqueline Tirelli
  • Chief of Staff - Southeast Region - Lauren Campbell
  • Region Chief of Staff (North) - Alyssa Spence
  • National Markets & Sales Team Chief of Staff - Jillian Braithwaite
  • National Markets & Sales Team Chief of Staff - Jill Braithwaite
  • Finance & National Sales Operations Chief of Staff - Matthew Stegmoyer
  • National Employee Enhancement Operations Chief of Staff - Michael DiGiorgio
  • Managing Director - Maral Ersan
  • Jacqueline Siegfried - Chief Executive Officer, Strategic Initiatives Lead, Office of

    Jacqueline Siegfried, the Chief Executive Officer, Strategic Initiatives Lead, Office of at The Siegfried Group, directs the overarching vision and long-term growth trajectory of the organization. Overseeing the development of high-impact leadership advisory frameworks, the Chief Executive Officer, Strategic Initiatives Lead, Office of ensures that all service offerings align with the core mission of providing elite accounting resources. This leadership role involves constant evaluation of market trends to maintain a competitive edge in financial advisory services. By architecting strategic initiatives that expand the firm's footprint, Jacqueline Siegfried directly influences the quality of talent delivery. The Chief Executive Officer, Strategic Initiatives Lead, Office of maintains rigorous standards for professional development, ensuring that the firm remains a premier destination for entrepreneurial talent seeking to refine leadership capabilities while delivering exceptional value to clients across the United States.

    Andrew Lavelle - Senior Vice President, Chief Financial Officer

    Andrew Lavelle, the Senior Vice President, Chief Financial Officer at The Siegfried Group, directs the financial health and fiscal strategy of the organization. Overseeing capital allocation, financial reporting, and risk management, the Senior Vice President, Chief Financial Officer ensures that the firm maintains the stability required to support its entrepreneurial leadership mission. This role involves providing critical data-driven insights to the executive team to guide decisions regarding talent delivery and service expansion. Andrew Lavelle manages the financial planning processes that underpin the firm's ability to provide high-quality accounting resource services. By maintaining rigorous financial controls, the Senior Vice President, Chief Financial Officer supports the firm's long-term growth and operational sustainability. Lavelle works closely with other leaders to ensure that financial resources are effectively deployed to maximize value for clients and stakeholders across the entire organization.

    Jacqueline Tirelli - Chief of Staff

    Jacqueline Tirelli, the Chief of Staff at The Siegfried Group, coordinates cross-functional operations to ensure seamless alignment between executive strategy and daily business activities. Overseeing internal communications and administrative efficiency, the Chief of Staff facilitates the execution of key organizational projects. This role involves managing the flow of information to the executive team, allowing for rapid decision-making regarding talent delivery and financial advisory services. Jacqueline Tirelli monitors the progress of strategic initiatives, ensuring that all departments remain focused on the firm's core mission of entrepreneurial leadership. By streamlining operational processes, the Chief of Staff supports the firm's ability to scale effectively while maintaining high service quality. Tirelli provides the necessary structure for the leadership team to focus on long-term growth, ensuring that the organization remains agile and responsive to the evolving needs of the accounting and advisory market.

    Lauren Campbell - Chief of Staff - Southeast Region

    Lauren Campbell, the Chief of Staff - Southeast Region at The Siegfried Group, directs operational excellence and talent integration across the Southeast market. Overseeing regional resource allocation, the Chief of Staff - Southeast Region ensures that accounting advisory services meet the specific demands of clients within this geographic territory. This role involves fostering strong connections between local talent and the broader organizational mission, driving growth through effective leadership development. Lauren Campbell manages the implementation of regional strategies that enhance the firm's market presence. By coordinating with national leadership, the Chief of Staff - Southeast Region aligns regional activities with the firm's overarching goals for financial advisory and talent delivery. Campbell maintains a focus on operational efficiency, ensuring that the Southeast region continues to provide high-value support to clients while upholding the firm's commitment to entrepreneurial excellence and professional development.

    Alyssa Spence - Region Chief of Staff (North)

    Alyssa Spence, the Region Chief of Staff (North) at The Siegfried Group, manages the operational infrastructure and talent delivery initiatives across Northern markets. Overseeing the alignment of regional resources with client needs, the Region Chief of Staff (North) ensures that accounting and financial advisory services are delivered with precision and consistency. This role involves driving strategic initiatives that support the professional growth of team members while enhancing client outcomes. Alyssa Spence coordinates with other regional leaders to share best practices and maintain a unified approach to service delivery. By optimizing regional workflows, the Region Chief of Staff (North) supports the firm's mission of fostering entrepreneurial leadership. Spence focuses on building strong client relationships and ensuring that the Northern region remains a key contributor to the firm's overall success in the competitive landscape of professional services and financial advisory.

    Jillian Braithwaite - National Markets & Sales Team Chief of Staff

    Jillian Braithwaite, the National Markets & Sales Team Chief of Staff at The Siegfried Group, coordinates the strategic efforts of the national sales force to drive market penetration and client acquisition. Overseeing the alignment of sales operations with the firm's financial advisory and talent delivery services, the National Markets & Sales Team Chief of Staff ensures that the sales team remains focused on high-value opportunities. This role involves managing the integration of sales strategies across various markets to ensure a consistent approach to client engagement. Jillian Braithwaite monitors sales performance metrics and provides the necessary support to optimize the effectiveness of the national team. By streamlining communication between sales and service delivery, the National Markets & Sales Team Chief of Staff enhances the firm's ability to meet client needs. Braithwaite plays a vital role in sustaining the firm's growth through effective sales operations and strategic market development.

    Jill Braithwaite - National Markets & Sales Team Chief of Staff

    Jill Braithwaite, the National Markets & Sales Team Chief of Staff at The Siegfried Group, focuses on the optimization of national sales processes and the development of client-facing strategies. Overseeing the implementation of sales enablement tools, the National Markets & Sales Team Chief of Staff ensures that the firm's advisory services are effectively communicated to prospective clients. This role involves analyzing market data to identify new growth opportunities and refining the approach to talent delivery. Jill Braithwaite collaborates with regional leaders to ensure that sales efforts are synchronized with the firm's overall mission of entrepreneurial leadership. By managing the operational aspects of the sales team, the National Markets & Sales Team Chief of Staff supports the firm's ability to scale its financial advisory services. Braithwaite ensures that the sales organization remains agile, responsive, and aligned with the firm's commitment to delivering exceptional value to clients.

    Matthew Stegmoyer - Finance & National Sales Operations Chief of Staff

    Matthew Stegmoyer, the Finance & National Sales Operations Chief of Staff at The Siegfried Group, manages the intersection of financial planning and sales execution to drive organizational efficiency. Overseeing the operational workflows that connect financial advisory services with national sales targets, the Finance & National Sales Operations Chief of Staff ensures that resources are allocated to maximize revenue growth. This role involves monitoring the financial performance of sales initiatives and providing actionable insights to the leadership team. Matthew Stegmoyer coordinates with the finance department to ensure that sales operations remain within budgetary constraints while supporting the firm's expansion goals. By streamlining the processes that link financial data with sales activity, the Finance & National Sales Operations Chief of Staff enhances the firm's ability to deliver high-quality accounting resources. Stegmoyer supports the firm's mission by ensuring that operational activities are aligned with long-term financial objectives.

    Michael DiGiorgio - National Employee Enhancement Operations Chief of Staff

    Michael DiGiorgio, the National Employee Enhancement Operations Chief of Staff at The Siegfried Group, directs the programs and operational frameworks dedicated to professional development and talent retention. Overseeing the initiatives that foster entrepreneurial leadership among the firm's employees, the National Employee Enhancement Operations Chief of Staff ensures that the workforce remains highly skilled and motivated. This role involves managing the systems that support employee growth, which in turn enhances the quality of talent delivery to clients. Michael DiGiorgio collaborates with leadership to align employee enhancement programs with the firm's strategic goals for financial advisory services. By optimizing the operations that support the firm's human capital, the National Employee Enhancement Operations Chief of Staff ensures that the organization maintains its competitive advantage. DiGiorgio focuses on creating an environment where professional excellence is prioritized, directly contributing to the firm's reputation for delivering superior accounting and advisory solutions.

    Maral Ersan - Managing Director

    Maral Ersan, the Managing Director at The Siegfried Group, oversees the execution of complex financial advisory engagements and talent delivery operations. Managing Director Ersan drives the expansion of service capabilities by aligning internal resources with the specific needs of clients requiring high-level accounting support. This role requires constant collaboration with regional leadership to ensure consistent service delivery across all markets. By optimizing operational workflows, the Managing Director enhances the efficiency of the firm's advisory model. Maral Ersan monitors performance metrics to guarantee that every engagement meets the high standards expected of an entrepreneurial leadership organization. Through the implementation of strategic talent management practices, the Managing Director secures the firm's position as a leader in the professional services industry, ensuring that clients receive actionable insights and superior support for their most critical financial challenges.

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    Frequently Asked Questions Regarding The Siegfried Group Top Executives and Leadership Team

    Who leads The Siegfried Group?
    The Siegfried Group is led by Jacqueline Siegfried (Chief Executive Officer, Strategic Initiatives Lead, Office of), along with executives such as Andrew Lavelle (Senior Vice President, Chief Financial Officer) and Jacqueline Tirelli (Chief of Staff).
    Who is part of The Siegfried Group’s executive team?
    The executive team of The Siegfried Group includes leaders such as Jacqueline Siegfried (Chief Executive Officer, Strategic Initiatives Lead, Office of), Andrew Lavelle (Senior Vice President, Chief Financial Officer), Jacqueline Tirelli (Chief of Staff) and other senior executives.
    How many executives does The Siegfried Group have?
    The Siegfried Group has 10 executives leading key business areas.
    What roles are included in The Siegfried Group’s leadership team?
    The leadership team of The Siegfried Group includes roles such as Chief Executive Officer, Strategic Initiatives Lead, Office of, Senior Vice President, Chief Financial Officer, Chief of Staff, Chief of Staff - Southeast Region, Region Chief of Staff (North).