Ixonia Bank Executive and Leadership Team

May, 2026

Leadership Overview

Ixonia Bank has 5 executives leading key functions including strategy, finance, and operations.

Driven by a century of community focus, Ixonia Bank provides comprehensive financial services, fostering economic growth across Wisconsin through robust commercial banking and personal financial solutions.

Leadership Roles at Ixonia Bank

  • Chief Executive Officer - Gregory Larson
  • Chairman & Chief Executive Officer - Daniel Westrope
  • Chief Financial Officer - Erika Nowak
  • Executive Vice President & Chief Financial Officer - John Eimon
  • President - Mark Wierman
  • Gregory Larson - Chief Executive Officer

    Gregory Larson, the Chief Executive Officer at Ixonia Bank, directs the overall strategic vision and operational execution for the institution. Larson's leadership guides the bank's expansion and commitment to providing a full suite of commercial banking products and financial services. Overseeing all departments, Gregory Larson ensures alignment with the bank's mission of serving its communities for over 100 years. This executive role involves driving innovation in financial services, maintaining robust asset growth, and upholding the bank's reputation for reliability and customer focus. Larson's strategic direction is critical for navigating the evolving financial landscape and solidifying Ixonia Bank's presence across Jefferson, Milwaukee, and Waukesha Counties. The Chief Executive Officer's responsibilities encompass fostering a strong corporate culture and ensuring sustainable growth, directly impacting the bank's market position and financial health.

    Daniel Westrope - Chairman & Chief Executive Officer

    Daniel Westrope, the Chairman & Chief Executive Officer at Ixonia Bank, provides overarching governance and strategic leadership, shaping the institution's long-term trajectory. Westrope's dual role encompasses both board oversight and executive management, ensuring the bank's continued success and adherence to its foundational principles established in 1918. Overseeing the strategic direction, Daniel Westrope champions the bank's growth beyond $500 million in assets and its expansion into key Wisconsin counties. This leadership position involves setting the tone for corporate responsibility and financial integrity across all seven locations. The Chairman & Chief Executive Officer's influence extends to major policy decisions and stakeholder relations, reinforcing Ixonia Bank's commitment to its clients and the communities it serves. Westrope's guidance is paramount in maintaining the bank's legacy of trust and service excellence.

    Erika Nowak - Chief Financial Officer

    Erika Nowak, the Chief Financial Officer at Ixonia Bank, manages the institution's financial health and strategic fiscal planning. Nowak oversees all financial operations, including budgeting, forecasting, and financial reporting, ensuring compliance with regulatory standards and driving profitability. This executive role is central to maintaining the bank's asset growth, currently exceeding $500 million, and supporting its expansion across multiple counties. Erika Nowak's responsibilities include optimizing financial performance, managing risk, and developing strategies to enhance shareholder value. The Chief Financial Officer's expertise is crucial for guiding investment decisions and ensuring the efficient allocation of resources across Ixonia Bank's seven locations. Nowak's leadership ensures financial stability and supports the bank's century-long commitment to providing comprehensive financial services.
    Erika Nowak

    John Eimon - Executive Vice President & Chief Financial Officer

    John Eimon, the Executive Vice President & Chief Financial Officer at Ixonia Bank, directs critical financial strategies and operational efficiencies. Eimon's purview includes managing the bank's substantial assets, currently over $500 million, and overseeing financial planning across its expanding network. This executive role involves close collaboration with other leaders to ensure fiscal responsibility and drive sustainable growth throughout Jefferson, Milwaukee, and Waukesha Counties. John Eimon's leadership ensures the integrity of financial reporting and the effective management of capital. The Executive Vice President & Chief Financial Officer's responsibilities extend to optimizing financial resources and supporting the bank's long-term strategic objectives. Eimon's financial acumen is vital for navigating market dynamics and reinforcing Ixonia Bank's position as a trusted financial partner.

    Mark Wierman - President

    Mark Wierman, the President at Ixonia Bank, spearheads operational strategies and business development initiatives across the institution. Wierman's leadership focuses on enhancing the bank's service offerings, including personal checking, savings, loans, and wealth management, ensuring client needs are met with excellence. This executive role is instrumental in driving the bank's growth and expanding its reach to seven locations throughout Wisconsin. Mark Wierman oversees the execution of strategic plans, fostering a culture of innovation and customer-centricity. The President's responsibilities include managing key relationships and ensuring operational synergy across all business units. Wierman's direction is crucial for maintaining Ixonia Bank's competitive edge and its commitment to providing comprehensive financial solutions for over a century.
    Mark Wierman

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    Frequently Asked Questions Regarding Ixonia Bank Top Executives and Leadership Team

    Who leads Ixonia Bank?
    Ixonia Bank is led by Gregory Larson (Chief Executive Officer), along with executives such as Daniel Westrope (Chairman & Chief Executive Officer) and Erika Nowak (Chief Financial Officer).
    Who is part of Ixonia Bank’s executive team?
    The executive team of Ixonia Bank includes leaders such as Gregory Larson (Chief Executive Officer), Daniel Westrope (Chairman & Chief Executive Officer), Erika Nowak (Chief Financial Officer) and other senior executives.
    How many executives does Ixonia Bank have?
    Ixonia Bank has 5 executives leading key business areas.
    What roles are included in Ixonia Bank’s leadership team?
    The leadership team of Ixonia Bank includes roles such as Chief Executive Officer, Chairman & Chief Executive Officer, Chief Financial Officer, Executive Vice President & Chief Financial Officer, President.