Southside Bank Executive and Leadership Team

August, 2026

Leadership Overview

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

Focused on delivering comprehensive financial solutions to individuals and businesses, Southside Bank maintains a commitment to community-centered banking, robust loan portfolio management, and specialized trust services across its diverse operational footprint.

Leadership Roles at Southside Bank

  • Chairman & Chief Executive Officer - Bill Hartley
  • Executive Vice President & Chief Financial Officer - Julie Shamburger
  • Chief Operating Officer - Mitchell Craddock
  • Sevp and Chief Operating Officer - Brian Mccabe
  • President, Market (Austin) - Charles Colley
  • Nacogdoches Market President - Michael Goode
  • President - Keith Donahoe
  • President - Robert Karpiuk
  • Chief Technology Officer - Gary Mills
  • Executive Vice President & Chief Information Officer - Keith Miller
  • Bill Hartley - Chairman & Chief Executive Officer

    Bill Hartley, the Chairman & Chief Executive Officer at Southside Bank, directs the overarching strategic vision and long-term growth initiatives for the organization. Overseeing the alignment of banking services with the needs of individuals, municipal entities, and nonprofit organizations, the Chairman & Chief Executive Officer ensures the institution maintains a competitive edge in the financial sector. This leadership role involves constant evaluation of the loan portfolio, including residential and commercial real estate assets, to ensure stability and profitability. By fostering relationships with key stakeholders and guiding the board, Bill Hartley shapes the institutional culture and operational priorities. The Chairman & Chief Executive Officer drives the expansion of trust services and investment management, ensuring that the bank remains a pillar of financial support for the communities served. Through rigorous oversight of capital allocation and risk management, the executive secures the future of the bank.

    Julie Shamburger - Executive Vice President & Chief Financial Officer

    Julie Shamburger, the Executive Vice President & Chief Financial Officer at Southside Bank, manages the financial health, reporting, and capital planning of the organization. Overseeing the balance sheet and liquidity management, the Executive Vice President & Chief Financial Officer ensures that the bank maintains sufficient capital to support its diverse loan portfolio and deposit products. Julie Shamburger directs the financial analysis of investment management and trust services to optimize revenue streams. This leadership role involves providing the board with accurate financial insights to guide strategic decision-making regarding commercial and residential real estate loans. By monitoring economic indicators and regulatory requirements, the Executive Vice President & Chief Financial Officer ensures the institution remains fiscally sound. The executive coordinates with other leaders to allocate resources effectively, supporting the bank's long-term growth and commitment to providing stable financial services to individuals and organizations across the region.

    Mitchell Craddock - Chief Operating Officer

    Mitchell Craddock, the Chief Operating Officer at Southside Bank, manages the daily execution of internal processes and service delivery across the entire organization. Focusing on the efficiency of deposit products and consumer loan processing, the Chief Operating Officer optimizes workflows to enhance customer satisfaction and operational throughput. Mitchell Craddock monitors the performance of various departments to ensure that the bank meets the complex demands of commercial and municipal clients. By streamlining the administration of checking accounts and installment loans, the Chief Operating Officer maintains high standards of service quality. This role involves close collaboration with other executive leaders to implement scalable solutions that support the bank's growth objectives. Through the continuous refinement of internal systems, the executive ensures that the institution remains agile and responsive to market shifts, ultimately driving operational excellence and supporting the broader mission of providing reliable financial services.
    Mitchell Craddock

    Brian Mccabe - Sevp and Chief Operating Officer

    Brian Mccabe, the Sevp and Chief Operating Officer at Southside Bank, oversees the strategic expansion of commercial lending and business capital services. Focusing on the development of short-term working capital loans and equipment financing, the Sevp and Chief Operating Officer ensures that the bank provides essential liquidity to business clients. Brian Mccabe manages the coordination between regional teams to deliver tailored financial solutions that support business expansion and inventory management. This leadership role involves analyzing market trends to refine the commercial loan portfolio and mitigate risk. By directing the implementation of specialized business banking strategies, the Sevp and Chief Operating Officer strengthens the bank's market position. The executive works to ensure that all commercial operations align with the broader institutional goals of growth and stability, providing the necessary resources for businesses to thrive while maintaining a disciplined approach to credit quality and asset management.

    Charles Colley - President, Market (Austin)

    Charles Colley, the President, Market (Austin) at Southside Bank, leads the regional operations and business development efforts within the Austin market. Focusing on the delivery of commercial and consumer banking services, the President, Market (Austin) ensures that the bank meets the specific financial needs of the local community. Charles Colley manages the growth of the loan portfolio, including construction and commercial real estate loans, by building strong relationships with local businesses and municipal entities. This leadership role involves representing the bank in regional initiatives and ensuring that the institution's services remain relevant to the local economy. By overseeing the local team, the President, Market (Austin) drives the expansion of deposit products and trust services. The executive ensures that the bank's commitment to community-centered banking is reflected in every interaction, supporting the overall mission of the institution through localized expertise and strategic market engagement.

    Michael Goode - Nacogdoches Market President

    Michael Goode, the Nacogdoches Market President at Southside Bank, directs the regional strategy and client engagement efforts in the Nacogdoches area. Focusing on the provision of personalized financial services, the Nacogdoches Market President ensures that individuals and businesses have access to the bank's full suite of deposit and loan products. Michael Goode manages the local loan portfolio, emphasizing the importance of residential and commercial real estate financing to support regional development. This leadership role involves active participation in the local business community to identify growth opportunities and address the financial requirements of municipal clients. By overseeing the local branch operations, the Nacogdoches Market President maintains high standards of service and community trust. The executive works to align regional activities with the bank's broader goals, ensuring that the institution remains a vital partner for the economic prosperity of the Nacogdoches market.

    Keith Donahoe - President

    Keith Donahoe, the President at Southside Bank, oversees the execution of corporate strategy and the management of key banking divisions. Focusing on the optimization of consumer and commercial loan portfolios, the President ensures that the bank maintains a balanced and profitable asset mix. Keith Donahoe directs the coordination between various departments to enhance the delivery of trust and brokerage services. This leadership role involves working closely with the executive team to refine operational processes and improve service efficiency. By monitoring the performance of the bank's diverse financial products, the President supports the institution's commitment to providing comprehensive solutions for individuals and organizations. The executive drives initiatives that strengthen the bank's market position, ensuring that all activities align with the core mission of delivering reliable and community-focused financial services while maintaining a disciplined approach to risk and capital management.

    Robert Karpiuk - President

    Robert Karpiuk, the President at Southside Bank, manages the strategic oversight of specialized lending and financial advisory services. Focusing on the expansion of the bank's municipal and commercial loan offerings, the President ensures that the institution provides the necessary capital for infrastructure and business growth. Robert Karpiuk directs the development of advisory services for corporations and partnerships, enhancing the bank's value proposition in the trust and investment management space. This leadership role involves collaborating with other executives to ensure that the bank's financial products meet the evolving needs of the market. By overseeing the implementation of strategic initiatives, the President supports the bank's commitment to excellence and community impact. The executive works to ensure that all lending and advisory activities are conducted with a focus on long-term stability and client success, reinforcing the bank's reputation as a trusted financial partner.

    Gary Mills - Chief Technology Officer

    Gary Mills, the Chief Technology Officer at Southside Bank, architects the digital infrastructure required to support modern banking services and secure data management. Overseeing the integration of advanced financial software, the Chief Technology Officer ensures that all digital platforms for savings, money market, and checking accounts remain robust and user-friendly. Gary Mills drives the implementation of cybersecurity protocols to protect the integrity of the loan portfolio and client information. This leadership role involves evaluating emerging technologies to enhance brokerage services and investment management tools. By aligning technical capabilities with the bank's strategic goals, the Chief Technology Officer facilitates seamless digital interactions for individuals and corporate clients. The executive manages the technical team to ensure high availability of banking systems, supporting the bank's commitment to innovation and security in the competitive financial landscape while maintaining compliance with industry standards.

    Keith Miller - Executive Vice President & Chief Information Officer

    Keith Miller, the Executive Vice President & Chief Information Officer at Southside Bank, directs the information systems and data governance frameworks that underpin the bank's operations. Overseeing the maintenance of core banking platforms, the Executive Vice President & Chief Information Officer ensures that data related to certificates of deposit and consumer loans remains accurate and accessible. Keith Miller manages the strategic deployment of information technology to improve the efficiency of trust services and brokerage operations. This leadership role involves ensuring that all information systems comply with strict financial regulations and security standards. By fostering a culture of data-driven decision-making, the Executive Vice President & Chief Information Officer supports the bank's ability to provide personalized financial solutions. The executive works to modernize the technological landscape, ensuring that the bank's information infrastructure remains a competitive asset that facilitates seamless service delivery for all clients.

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    Frequently Asked Questions Regarding Southside Bank Top Executives and Leadership Team

    Who leads Southside Bank?
    Southside Bank is led by Bill Hartley (Chairman & Chief Executive Officer), along with executives such as Julie Shamburger (Executive Vice President & Chief Financial Officer) and Mitchell Craddock (Chief Operating Officer).
    Who is part of Southside Bank’s executive team?
    The executive team of Southside Bank includes leaders such as Bill Hartley (Chairman & Chief Executive Officer), Julie Shamburger (Executive Vice President & Chief Financial Officer), Mitchell Craddock (Chief Operating 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 Chairman & Chief Executive Officer, Executive Vice President & Chief Financial Officer, Chief Operating Officer, Sevp and Chief Operating Officer, President, Market (Austin).