Southside Bank Executive and Leadership Team

July, 2026

Leadership Overview

Southside Bank has 10 executives leading key functions including strategy, operations, technology, and finance.

Driven by a commitment to community banking, Southside Bank provides comprehensive financial services, fostering economic growth through diverse lending and trust solutions.

Leadership Roles at Southside Bank

  • Chief Executive Officer - Keith Donahoe
  • Chairman & Chief Executive Officer - B. Hartley
  • Executive Vice President & Chief Financial Officer - Julie Shamburger
  • Chief Operating Officer - Mitchell Craddock
  • Sevp and Chief Operating Officer - Brian Mccabe
  • President - Robert Karpiuk
  • Regional President, Texas Wealth Management & Trust (East) - Hillary Walker
  • Nacogdoches Market President - Michael Goode
  • Chief Technology Officer - Gary Mills
  • Executive Vice President & Chief Information Officer - Keith Miller
  • Keith Donahoe - Chief Executive Officer

    Keith Donahoe, the Chief Executive Officer at Southside Bank, directs the overall strategic vision and operational execution for the financial institution. Overseeing all major business units, Donahoe ensures alignment with the company's mission of providing comprehensive financial services to individuals, businesses, and municipal entities. This leadership role involves driving growth through innovative product development and market expansion, particularly within the Texas region. By optimizing resource allocation and fostering a culture of client-centric service, Keith Donahoe directly impacts the bank's profitability and market standing. The Chief Executive Officer's responsibilities extend to maintaining strong relationships with stakeholders and guiding the company through evolving financial landscapes, securing long-term stability and client trust.
    Keith Donahoe

    B. Hartley - Chairman & Chief Executive Officer

    B. Hartley, the Chairman & Chief Executive Officer at Southside Bank, provides overarching governance and strategic direction for the entire organization. This dual role encompasses setting the long-term vision and ensuring the company's financial health and operational integrity. Hartley's leadership guides the bank's expansion efforts and its commitment to serving diverse client needs, from consumer loans to complex commercial real estate financing. By championing the bank's core values and fostering robust corporate governance, B. Hartley ensures sustainable growth and upholds the institution's reputation within the financial sector. The Chairman & Chief Executive Officer's influence is critical in navigating market dynamics and maintaining stakeholder confidence, solidifying the bank's position as a trusted financial partner.

    Julie Shamburger - Executive Vice President & Chief Financial Officer

    Julie Shamburger, the Executive Vice President & Chief Financial Officer at Southside Bank, manages the institution's financial health and strategic fiscal planning. Overseeing all financial operations, Shamburger directs accounting, budgeting, and financial reporting to ensure fiscal responsibility and profitability. This pivotal role involves analyzing financial performance, managing capital resources, and developing strategies to optimize revenue streams from lending and investment services. By maintaining rigorous financial controls and driving sound fiscal policies, Julie Shamburger directly supports the bank's stability and growth initiatives. The Executive Vice President & Chief Financial Officer's expertise is crucial for navigating economic fluctuations and ensuring the long-term financial security of the bank and its clients.

    Mitchell Craddock - Chief Operating Officer

    Mitchell Craddock, the Chief Operating Officer at Southside Bank, manages the day-to-day operational functions and drives efficiency across all departments. Overseeing the execution of business strategies, Craddock ensures seamless service delivery for deposit accounts, loan origination, and trust management. This leadership position involves optimizing internal processes, enhancing operational workflows, and ensuring compliance with regulatory standards. By streamlining operations and fostering cross-departmental collaboration, Mitchell Craddock directly supports the bank's growth objectives and commitment to client satisfaction. The Chief Operating Officer's role is vital in maintaining the bank's operational excellence and its capacity to adapt to evolving market demands.
    Mitchell Craddock

    Brian Mccabe - Sevp and Chief Operating Officer

    Brian Mccabe, the Sevp and Chief Operating Officer at Southside Bank, directs critical operational strategies and oversees the execution of key business initiatives. This senior leadership role involves managing the bank's operational framework, ensuring efficiency in service delivery across all financial product lines, including deposits, loans, and trust services. Mccabe's responsibilities encompass optimizing internal processes, enhancing customer experience, and ensuring adherence to stringent regulatory requirements. By driving operational excellence and fostering a culture of continuous improvement, Brian Mccabe directly contributes to the bank's sustained growth and market competitiveness. The Sevp and Chief Operating Officer's strategic oversight is essential for maintaining robust operational performance and supporting the bank's long-term objectives.

    Robert Karpiuk - President

    Robert Karpiuk, the President at Southside Bank, leads strategic initiatives and oversees the bank's overall business development and market presence. This executive role involves driving growth across all service areas, including consumer and commercial lending, as well as wealth management. Karpiuk's leadership focuses on expanding the bank's reach and enhancing its reputation as a trusted financial partner within its operating regions. By fostering strong client relationships and championing innovative financial solutions, Robert Karpiuk directly contributes to the bank's market leadership and sustained success. The President's vision is instrumental in guiding the institution's trajectory and ensuring its continued relevance in the competitive banking landscape.

    Hillary Walker - Regional President, Texas Wealth Management & Trust (East)

    Hillary Walker, the Regional President, Texas Wealth Management & Trust (East) at Southside Bank, directs the strategic growth and operational oversight of wealth management and trust services across East Texas. Overseeing dedicated teams, Walker ensures the delivery of comprehensive financial planning, investment management, and fiduciary services to high-net-worth individuals and organizations. This leadership position involves cultivating client relationships, expanding market share within the region, and ensuring compliance with all regulatory requirements governing trust and investment activities. By driving client-focused strategies and fostering a culture of fiduciary responsibility, Hillary Walker directly enhances the bank's reputation and profitability in the wealth management sector. The Regional President's expertise is vital for navigating complex financial landscapes and providing tailored solutions to clients.

    Michael Goode - Nacogdoches Market President

    Michael Goode, the Nacogdoches Market President at Southside Bank, spearheads the bank's operations and strategic initiatives within the Nacogdoches region. Overseeing all market activities, Goode drives business development, manages client relationships, and ensures the delivery of comprehensive banking services tailored to local needs. This role involves fostering community engagement and strengthening the bank's presence through targeted lending and deposit-gathering strategies. By leading the local team and championing the bank's commitment to client success, Michael Goode directly contributes to market growth and operational effectiveness. The Nacogdoches Market President's deep understanding of the local economy is crucial for aligning the bank's offerings with community demands and achieving regional objectives.

    Gary Mills - Chief Technology Officer

    Gary Mills, the Chief Technology Officer at Southside Bank, architects and executes the bank's technology strategy, ensuring robust and secure digital infrastructure. Overseeing all IT operations, Mills drives innovation in financial technology to enhance service delivery and operational efficiency. This critical role involves managing the development and implementation of cutting-edge systems that support deposit products, loan portfolios, and trust services. By optimizing technological resources and safeguarding sensitive data, Gary Mills directly contributes to the bank's competitive edge and client confidence. The Chief Technology Officer's focus on scalable solutions and cybersecurity is paramount in supporting the bank's mission to provide seamless financial experiences across all platforms.

    Keith Miller - Executive Vice President & Chief Information Officer

    Keith Miller, the Executive Vice President & Chief Information Officer at Southside Bank, leads the strategic development and implementation of information systems. Overseeing the bank's technology infrastructure, Miller ensures the security, reliability, and scalability of all IT operations supporting financial services. This role is crucial for managing data integrity, enhancing digital banking platforms, and driving technological advancements that align with business objectives. By optimizing information systems and cybersecurity protocols, Keith Miller directly supports the bank's mission to provide secure and efficient financial solutions. The Executive Vice President & Chief Information Officer's expertise is fundamental to maintaining operational resilience and fostering innovation in a dynamic technological landscape.

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    Frequently Asked Questions Regarding Southside Bank Top Executives and Leadership Team

    Who leads Southside Bank?
    Southside Bank is led by Keith Donahoe (Chief Executive Officer), along with executives such as B. Hartley (Chairman & Chief Executive Officer) and Julie Shamburger (Executive Vice President & Chief Financial Officer).
    Who is part of Southside Bank’s executive team?
    The executive team of Southside Bank includes leaders such as Keith Donahoe (Chief Executive Officer), B. Hartley (Chairman & Chief Executive Officer), Julie Shamburger (Executive Vice President & Chief Financial Officer) and other senior executives.
    How many executives does Southside Bank have?
    Southside Bank has 10 executives leading key business areas.
    What roles are included in Southside Bank’s leadership team?
    The leadership team of Southside Bank includes roles such as Chief Executive Officer, Chairman & Chief Executive Officer, Executive Vice President & Chief Financial Officer, Chief Operating Officer, Sevp and Chief Operating Officer.