Southside Bank Executive and Leadership Team

June, 2026

Leadership Overview

Southside Bank has 10 executives leading key functions including strategy, operations, technology, finance, wealth management, and regional market development.

Driven by a commitment to community banking, Southside Bank provides comprehensive financial services, fostering economic growth through a robust loan portfolio and diverse trust and brokerage offerings.

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
  • Trust President, Wealth Management - William Newburn
  • Regional President, Texas (East) - Jared Green
  • Regional President, Texas Wealth Management & Trust (East) - Hillary Walker
  • President - Robert Karpiuk
  • 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 initiatives, managing risk, and fostering a culture of client-centric service. By optimizing the bank's product offerings, including savings, money market, and checking accounts, alongside a diverse loan portfolio, Keith Donahoe directly impacts the bank's market position and financial performance. Ultimately, Donahoe secures the long-term stability and expansion of Southside Bank's operations across its service regions.
    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 bank's adherence to its core principles of community engagement and financial stewardship. Hartley's leadership guides the executive team in navigating market complexities and capitalizing on opportunities within the financial services sector. The Chairman & Chief Executive Officer's responsibilities include fostering strong relationships with stakeholders and overseeing the bank's commitment to delivering a wide array of financial products, from deposit accounts to complex loan solutions. Through strategic oversight, B. Hartley ensures the sustained growth and integrity of Southside Bank's operations and reputation.

    Julie Shamburger - Executive Vice President & Chief Financial Officer

    Julie Shamburger, the Executive Vice President & Chief Financial Officer at Southside Bank, directs all financial planning, accounting, and reporting activities for the organization. This executive role involves managing the bank's capital structure, overseeing investment strategies, and ensuring compliance with all financial regulations. Shamburger's responsibilities extend to analyzing financial performance, identifying opportunities for revenue enhancement, and managing the bank's comprehensive loan portfolio, including commercial real estate and construction financing. By maintaining rigorous financial controls, Julie Shamburger supports the stability and profitability of Southside Bank. The Executive Vice President & Chief Financial Officer's insights are crucial for strategic decision-making and long-term financial health.

    Mitchell Craddock - Chief Operating Officer

    Mitchell Craddock, the Chief Operating Officer at Southside Bank, manages the day-to-day operational efficiency and effectiveness across all departments. Overseeing critical functions such as loan processing, customer service, and internal systems, Craddock ensures seamless delivery of financial services. This executive's focus involves streamlining workflows, implementing best practices, and enhancing the client experience for individuals, businesses, and municipal entities. By optimizing the bank's operational infrastructure, Mitchell Craddock supports the expansion of its loan portfolio, including residential, commercial real estate, and construction loans. The Chief Operating Officer's leadership is vital for maintaining high service standards and driving operational excellence throughout Southside Bank's Texas market presence.
    Mitchell Craddock

    William Newburn - Trust President, Wealth Management

    William Newburn, the Trust President, Wealth Management at Southside Bank, leads the division dedicated to providing comprehensive investment management, administration, and advisory services. This executive role focuses on cultivating client relationships and developing tailored strategies for individuals, partnerships, and corporations seeking to grow and preserve their assets. Newburn oversees the team responsible for executing complex trust operations and ensuring fiduciary responsibilities are met with the highest standards. By expanding the wealth management offerings, William Newburn contributes significantly to the bank's diversified revenue streams beyond traditional banking products. The Trust President's leadership ensures clients receive expert guidance for their financial futures.

    Jared Green - Regional President, Texas (East)

    Jared Green, the Regional President, Texas (East) at Southside Bank, spearheads market development and client engagement across the eastern Texas region. This leadership position involves overseeing the bank's commercial and retail banking operations within this territory, driving loan origination, and expanding deposit relationships. Green works closely with local businesses and individuals to understand their financial needs, ensuring the delivery of tailored solutions from the bank's extensive product suite. By fostering strong community ties, Jared Green enhances Southside Bank's regional presence and market share. The Regional President's focus on localized strategy is key to achieving sustained growth and client satisfaction throughout East Texas.

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

    Hillary Walker, the Regional President, Texas Wealth Management & Trust (East) at Southside Bank, directs the expansion and client service efforts for wealth management and trust operations in eastern Texas. This executive role focuses on building and nurturing relationships with high-net-worth individuals and organizations seeking sophisticated financial planning and asset management. Walker oversees the delivery of personalized trust administration, investment advisory, and estate planning services. By strategically growing this specialized division, Hillary Walker enhances Southside Bank's comprehensive service offering beyond traditional banking. The Regional President's leadership ensures clients receive expert guidance and dedicated support for their long-term financial objectives.

    Robert Karpiuk - President

    Robert Karpiuk, the President at Southside Bank, drives strategic initiatives and operational oversight across key business segments. This leadership role involves ensuring the effective execution of the bank's mission to provide a full spectrum of financial services, including deposit products, commercial lending, and consumer loans. Karpiuk collaborates with other executive leaders to identify market opportunities and enhance client satisfaction. By focusing on operational excellence and strategic growth, Robert Karpiuk contributes to the bank's sustained performance and expansion within its service areas. The President's dedication to fostering strong client relationships and community engagement is central to Southside Bank's ongoing success.

    Gary Mills - Chief Technology Officer

    Gary Mills, the Chief Technology Officer at Southside Bank, architects and oversees the bank's entire technology infrastructure and digital strategy. This critical role involves ensuring the security, reliability, and scalability of all IT systems that support deposit products, loan origination, and trust services. Mills drives innovation in digital banking solutions, enhancing customer access to accounts and financial management tools. By implementing cutting-edge technologies, Gary Mills supports the bank's ability to offer competitive loan portfolios and efficient brokerage services. The Chief Technology Officer's strategic vision is essential for maintaining a robust technological foundation that underpins Southside Bank's operational capabilities and future growth.

    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 that support the bank's diverse financial services. This position involves managing the integration of technology across all business lines, from core banking operations to specialized trust and wealth management platforms. Miller ensures that information security protocols are robust, protecting sensitive client data and financial transactions. By driving technological advancements, Keith Miller enhances the efficiency of loan servicing and the delivery of brokerage and investment management services. The Executive Vice President & Chief Information Officer's expertise is fundamental to Southside Bank's operational resilience and digital transformation efforts.

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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, Trust President, Wealth Management.