Ixonia Bank Executive and Leadership Team

June, 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 personalized banking solutions and robust wealth management.

Leadership Roles at Ixonia Bank

  • Chief Executive Officer - Gregory Larson
  • Chairman & Chief Executive Officer - Daniel Westrope
  • Executive Vice President & Chief Financial Officer - John Eimon
  • Executive Vice President & Chief Financial Officer - Erika Nowak
  • 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 ensures the bank's continued growth and adherence to its century-old mission of providing comprehensive financial services. Overseeing all departments, Larson drives initiatives that enhance customer value and expand market reach across Jefferson, Milwaukee, and Waukesha Counties. This executive role involves aligning the bank's commercial banking products and personal financial services with evolving market demands. By focusing on sustainable expansion, Gregory Larson solidifies Ixonia Bank's position as a trusted financial partner, managing assets exceeding $500 million and ensuring robust client relationships through strategic oversight.

    Daniel Westrope - Chairman & Chief Executive Officer

    Daniel Westrope, the Chairman & Chief Executive Officer at Ixonia Bank, guides the institution's long-term strategic direction and corporate governance. Westrope's oversight ensures the bank's commitment to its founding principles established in 1918. This leadership position involves setting the tone for executive decision-making and fostering a culture of integrity and client-centricity across all seven locations. Daniel Westrope champions initiatives that strengthen the bank's financial foundation and expand its service offerings, including personal checking, savings, loans, and wealth management. By steering the bank's growth trajectory, Westrope maintains Ixonia Bank's status as a significant financial entity with over $500 million in assets, ensuring continued service excellence throughout its operational regions.

    John Eimon - Executive Vice President & Chief Financial Officer

    John Eimon, the Executive Vice President & Chief Financial Officer at Ixonia Bank, manages the institution's financial health and strategic fiscal planning. Eimon's responsibilities encompass overseeing all financial operations, including accounting, treasury, and capital management, ensuring the bank's stability and profitability. This executive role involves developing financial strategies that support Ixonia Bank's expansion across Jefferson, Milwaukee, and Waukesha Counties, managing assets exceeding $500 million. John Eimon directs the financial reporting and compliance functions, ensuring adherence to regulatory standards while optimizing resource allocation. By driving financial efficiency and integrity, Eimon supports the bank's mission to provide a full suite of commercial and personal banking services.

    Erika Nowak - Executive Vice President & Chief Financial Officer

    Erika Nowak, the Executive Vice President & Chief Financial Officer at Ixonia Bank, directs the financial strategy and operational efficiency of the organization. Nowak's purview includes managing the bank's fiscal operations, investment portfolios, and risk management frameworks to ensure sustained financial strength. This critical role involves analyzing market trends and economic conditions to inform strategic financial decisions, supporting Ixonia Bank's growth across its seven locations. Erika Nowak oversees budgeting, forecasting, and financial reporting, ensuring transparency and compliance with all regulatory requirements. By optimizing financial performance and resource allocation, Nowak contributes significantly to the bank's objective of providing comprehensive financial services and wealth management solutions.
    Erika Nowak

    Mark Wierman - President

    Mark Wierman, the President at Ixonia Bank, spearheads the operational execution and strategic growth initiatives across the institution. Wierman's leadership focuses on enhancing the delivery of commercial banking products and personal financial services, ensuring client satisfaction and market penetration. This executive position involves overseeing daily operations at all seven locations throughout Jefferson, Milwaukee, and Waukesha Counties, driving efficiency and service excellence. Mark Wierman collaborates closely with other senior leaders to align operational strategies with the bank's long-standing mission of community support and financial stewardship. By managing key business functions, Wierman ensures Ixonia Bank continues its legacy of providing robust financial solutions and managing over $500 million in assets.
    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 John Eimon (Executive Vice President & 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), John Eimon (Executive Vice President & 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, Executive Vice President & Chief Financial Officer, Executive Vice President & Chief Financial Officer, President.