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Management

Management

David W. Grzebinski
Chief Executive Officer
David W. Grzebinski is a Chartered Financial Analyst and holds a Master of Business Administration degree from Tulane University and a degree in chemical engineering from the University of South Florida. He has served as Chief Executive Officer since April 2014. He served as President and Chief Operating Officer from January 2014 to April 2014 and as Chief Financial Officer from March 2010 to April 2014. He served as Chairman of Kirby Offshore Marine from February 2012 to April 2013 and served as Executive Vice President from March 2010 to January 2014. Prior to joining the Company in February 2010, he served in various administrative positions since 1988 with FMC Technologies Inc. (“FMC”), including Controller, Energy Services, Treasurer, and Director of Global SAP and Industry Relations. Prior to joining FMC, he was employed by Dow Chemical Company.
Christian G. O’Neil
President & Chief Operating Officer
Christian G. O’Neil holds a Master of Business Administration degree from Rice University, a doctorate of jurisprudence from Tulane University and a bachelor of arts degree from Southern Methodist University. He has served as President & Chief Operating Officer since April of 2024. He served as Executive Vice President and Chief Operating Officer of Kirby Inland Marine and Kirby Offshore Marine from May 2016 to January 2018. He also served as Executive Vice President – Commercial Operations of Kirby Inland Marine and Kirby Offshore Marine from April 2014 to May 2016, Vice President – Human Resources of the Company from May 2012 to April 2014, Vice President – Sales for Kirby Inland Marine from 2009 to 2012 and President of Osprey from 2006 through 2008. He has also served in various sales and business development roles at the Company and Osprey. Prior to joining the Company, he served as Sales Manager and Fleet Manager at Hollywood Marine, Inc. (“Hollywood Marine”) after joining Hollywood Marine in 1997.
Raj Kumar
Executive Vice President and Chief Financial Officer

Raj Kumar is a member of CPA Australia and holds a Master in Business Administration from Columbia University in New York City and a Bachelor of Business Administration in Accounting degree from Deakin University in Australia. He has served as Executive Vice President and Chief Financial Officer since November 2021. Prior to joining the Company, Mr. Kumar served as Vice President and Chief Financial Officer at Dril-Quip, Inc., a global oil field equipment manufacturer since 2020. Mr. Kumar also held roles as Vice President and Chief Accounting Officer from 2019 to 2020 and as Vice President and Treasurer from 2017 to 2019. Prior to Dril-Quip, Mr. Kumar was at Franks International where he was Vice President of Finance and also led the Integrated Supply Chain function from 2015 to 2017. Mr. Kumar has extensive experience in corporate finance having served as a Segment Controller at LyondellBasell and in Division CFO, treasury, strategic planning and corporate development positions at FMC Technologies and Dell Technologies.

Amy D. Husted
Executive Vice President, General Counsel and Secretary

Amy D. Husted holds a doctorate of jurisprudence from South Texas College of Law and a Bachelor of Science degree in political science from the University of Houston. She has served the Company as Executive Vice President. General Counsel and Secretary since July 2024. She also served as Vice President, General Counsel and Secretary from April 2019 to April 2024, Vice President and General Counsel from January 2017 to April 2019, Vice President - Legal from January 2008 to January 2017 and Corporate Counsel from November 1999 through December 2007. Prior to joining the Company, she served as Corporate Counsel of Hollywood Marine from 1995 to 1999 after joining Hollywood Marine in 1994.

Jenny N. McCauley
Chief Human Resources Officer

Jenny McCauley holds a Bachelor of Arts from St. Mary’s College and a Master of Sciences in Psychology/Human Development from the University of Texas-Dallas. She has served as the Chief Human Resources Officer since February 2025 when she joined Kirby. She served throughout various roles within Human Resources, including most recently as the Senior Vice President Chief Administrative Officer at Southwestern Energy from January 2016 to December 2020 and Chief Human Resources Officer from June 2009 to December 2015. Prior to Southwestern Energy, she was the Vice President Human Resources at BG Group from June 2007 to May 2009, and held various executive human resources roles at JPMorgan Chase from December 1997 to May 2007.

Scott P. Miller
Vice President and Chief Information Officer
Scott P. Miller holds a Master of Business Administration degree from the University of Houston and a Bachelor of Science degree in Management of Information Systems from Louisiana State University. He has served as Vice President and Chief Information Officer since April 2019. Prior to joining the Company, he was the Senior Vice President and Chief Administrative Officer at Key Energy Services. Scott also held various roles within Key Energy Services including Vice President and Chief Information Officer and Managing Director of Strategy.
Donny Chia
Vice President, Finance and Investor Relations

Donny Chia holds a Doctor of Jurisprudence from Harvard Law School, and a Bachelor of Science in business administration and a Bachelor of Arts in political science from the University of California, Berkeley. He currently serves as Vice President, Finance and Investor Relations and previously served as Vice President, Finance for Kirby Distribution & Services. Prior to Kirby, he served as Senior Vice President of FP&A and Treasurer for LyondellBasell and as Vice President, Corporate Development & Treasurer for Eastman Chemical. Prior to his corporate roles, he held investment banking positions with increasing levels of responsibility at Morgan Stanley and J.P. Morgan.

Ronald A. Dragg
Vice President, Controller and Assistant Secretary
Ronald A. Dragg is a Certified Public Accountant and holds a Master of Science in Accountancy degree from the University of Houston and a degree in finance from Texas A&M University. He has served the Company as Vice President and Controller since January 2007. He also served as Controller from November 2002 to January 2007, Controller – Financial Reporting from January 1999 to October 2002, and Assistant Controller – Financial Reporting from October 1996 to December 1998. Prior to joining the Company, he was employed by Baker Hughes Incorporated.
William M. Woodruff
Vice President – Public and Governmental Affairs
William M. Woodruff holds a doctorate of jurisprudence from the University of Houston Law Center and a bachelor of science degree from Texas A&M University. He was elected Vice President – Public and Governmental Affairs in October 2017. He served as Director – Public & Government Affairs from 2014 to October 2017 after joining the Company as Director – Government Affairs in 2004. Prior to joining the Company, he was a maritime lawyer in private practice and Vice President and General Counsel of Coastal Towing, Inc.