Kirby Executive and Leadership Team

David Grzebinski, the Chief Executive Officer at Kirby, directs the overarching corporate strategy for the premier tank barge operator in the United States. Grzebinski manages the expansion of marine transportation services across the Mississippi River System and the Gulf Intracoastal Waterway. By overseeing the integration of the Distribution and Services segment, the Chief Executive Officer ensures the company maintains a competitive edge in the oilfield and power generation markets. David Grzebinski coordinates with the Board to optimize capital allocation and drive long-term shareholder value. This leadership role involves navigating complex regulatory environments while scaling the fleet to meet rising demand for petrochemical and refined petroleum transport. Through rigorous operational oversight, the Chief Executive Officer secures the company's position as a leader in industrial services and marine logistics across all three U.S. coasts.

Raj Kumar, the Executive Vice President & Chief Financial Officer at Kirby, directs the financial planning, reporting, and capital structure for the premier tank barge operator in the United States. Kumar manages the fiscal health of the marine transportation and industrial services segments, ensuring alignment with NYSE reporting requirements. By overseeing the financial performance of the Distribution and Services division, the Executive Vice President & Chief Financial Officer supports the growth of diesel engine and power generation equipment markets. Raj Kumar coordinates with the executive team to evaluate investment opportunities in energy storage and specialized electrical systems. This leadership role involves managing liquidity, risk assessment, and investor relations to sustain the company's market position. Through disciplined financial oversight, the Executive Vice President & Chief Financial Officer secures the resources necessary for fleet expansion and technological advancement across all U.S. coastal operations.

D. Hume, the Vice President, Finance & Divisional Chief Financial Officer, Kds at Kirby, manages the financial operations specifically for the Distribution and Services segment. Hume oversees the budgeting, forecasting, and cost-control measures for the distribution of diesel engines, transmissions, and reduction gears. By analyzing the profitability of oilfield service equipment and power generation manufacturing, the Vice President, Finance & Divisional Chief Financial Officer, Kds ensures the division meets its performance targets. D. Hume coordinates with the corporate finance team to integrate divisional data into the broader company financial strategy. This leadership role involves optimizing the supply chain costs for industrial equipment and high-capacity energy storage solutions. Through rigorous financial analysis, D. Hume supports the company's goal of maintaining a leading nationwide presence in the after-market service provider sector for industrial markets.

Christian Oneil, the President and Chief Operating Officer at Kirby, manages the daily execution of marine transportation and industrial services across the United States. Oneil oversees the operational performance of the tank barge fleet, ensuring the safe and efficient movement of petrochemicals and refined petroleum products. By directing the manufacturing and remanufacturing of oilfield service equipment, the President and Chief Operating Officer maintains high standards for power generation and electrical distribution systems. Christian Oneil coordinates with regional managers to optimize logistics along the Mississippi River System and the Gulf Intracoastal Waterway. This leadership role involves streamlining maintenance protocols for diesel engines and reduction gears to support the Distribution and Services segment. Through continuous process improvement, the President and Chief Operating Officer drives operational excellence and supports the company's commitment to reliable industrial service delivery.

Christian O'Neil, the President & Chief Operating Officer at Kirby, directs the strategic deployment of the company's offshore and inland tank barge fleets. O'Neil manages the operational safety and environmental compliance protocols for the transport of bulk liquid products across the Mississippi River System. By overseeing the manufacturing of specialized electrical distribution and control systems, the President & Chief Operating Officer ensures the company meets the needs of the power generation and industrial markets. Christian O'Neil coordinates with the leadership team to expand the company's footprint along all three U.S. coasts. This leadership role involves optimizing the maintenance and repair services for diesel engines and related industrial equipment. Through the implementation of advanced logistics strategies, the President & Chief Operating Officer drives efficiency and reliability in the company's marine and industrial service operations.

Dorman Strahan, the President (Kirby Engine Systems) at Kirby, directs the operations of the engine systems division, focusing on the distribution and service of diesel engines and reduction gears. Strahan manages the after-market service provider network that supports the oilfield services, marine, and power generation markets. By overseeing the manufacturing of specialized electrical distribution and control systems, the President (Kirby Engine Systems) ensures the company provides high-quality industrial equipment. Dorman Strahan coordinates with the broader leadership team to align engine system capabilities with the company's overall industrial services strategy. This leadership role involves expanding the service reach across the United States to maintain a competitive advantage in the industrial equipment sector. Through technical expertise and operational focus, the President (Kirby Engine Systems) drives growth and service excellence within the engine systems business unit.

John Hallmark, the President at Kirby, directs the strategic initiatives for the marine transportation segment, focusing on the inland tank barge fleet. Hallmark manages the operational logistics for the transport of petrochemicals and refined petroleum products throughout the Mississippi River System. By overseeing the maintenance and safety protocols for the largest inland fleet in the United States, the President ensures consistent service delivery for industrial clients. John Hallmark coordinates with the executive team to optimize fleet utilization and respond to market demand for bulk liquid transport. This leadership role involves managing the complex operational requirements of the Gulf Intracoastal Waterway and other key transit routes. Through the application of industry-leading safety standards, the President drives the operational success and market leadership of the company's marine transportation business.

Donald Mann, the President - ADDA and FDDA at Kirby, directs the specialized distribution and service operations for the company's industrial equipment segment. Mann manages the regional service centers that provide after-market support for diesel engines, transmissions, and reduction gears. By overseeing the manufacturing of high-capacity energy storage solutions, the President - ADDA and FDDA ensures the company meets the evolving needs of the power generation and on-highway markets. Donald Mann coordinates with the broader industrial services team to enhance the efficiency of the distribution network. This leadership role involves driving revenue growth through the expansion of service offerings and the optimization of equipment maintenance cycles. Through a focus on customer service and technical reliability, the President - ADDA and FDDA supports the company's position as a leading nationwide provider of industrial equipment services.

Scott Miller, the Vice President & Chief Information Officer at Kirby, architects the digital infrastructure supporting the largest inland and offshore tank barge fleet in the United States. Miller manages the cybersecurity frameworks and data analytics platforms that optimize the transport of bulk liquid products. By implementing advanced software solutions for the Distribution and Services segment, the Vice President & Chief Information Officer enhances the efficiency of diesel engine and transmission distribution. Scott Miller drives the modernization of internal systems to support high-capacity energy storage manufacturing and power generation equipment tracking. This leadership role involves aligning technological investments with the operational requirements of the marine and industrial markets. Through the deployment of scalable cloud and enterprise resource planning tools, the Vice President & Chief Information Officer ensures seamless connectivity across all regional operations.

Amy Husted, the Vice President, General Counsel & Secretary at Kirby, directs the legal strategy and corporate governance for the publicly traded marine transportation and industrial services company. Husted manages the legal risks associated with the operation of the largest tank barge fleet in the United States. By overseeing compliance with environmental regulations and maritime laws, the Vice President, General Counsel & Secretary ensures the company maintains its operational license across all three U.S. coasts. Amy Husted coordinates with the Board of Directors to manage corporate records and governance policies. This leadership role involves providing legal guidance on the manufacturing of oilfield service equipment and the distribution of industrial machinery. Through the management of complex litigation and regulatory affairs, the Vice President, General Counsel & Secretary protects the company's interests and supports its long-term strategic objectives.