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 President and 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 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 of Kirby Inland Marine and Kirby Offshore Marine since January 2018. 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.

Dorman L. Strahan attended Nicholls State University and has served the Company as President of Kirby Engine Systems since May 1999, President of Marine Systems since 1986 and President of Engine Systems since 1996. After joining the Company in 1982 in connection with the acquisition of Marine Systems, he served as Vice President of Marine Systems until 1985.

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.

Amy D. Husted holds a doctorate of jurisprudence from South Texas College of Law and a degree in political science from the University of Houston. She has served the Company has Vice President and General Counsel since January 2017. She served as Vice President – Legal from January 2008 to January 2017 and served as Corporate Counsel from November 1999 through December 2007. Prior to joining the Company, she served as Corporate Counsel of Hollywood Marine from 1996 to 1999 after joining Hollywood Marine in 1994.

Julie M. Kruger holds a Bachelor of Science degree from Texas A&M University. She has led the human resources function as Vice President of Human Resources since March 2023. Ms. Kruger joined the Company in May 2020 as Senior Director Human Resources and was promoted to Vice President of Human Resources in February 2023. Prior to joining the Company, Ms. Kruger served in a variety of roles in human resources at increasing levels of leadership at Key Energy Services from July 2007 to February 2020, serving as Vice President Human Resources from March 2019 to February 2020 and Senior Human Resources Director from November 2016 to May 2020.

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.

Kurt A. Niemietz holds a Master of Business Administration in Finance with Honors from St. Mary’s University and a Bachelor of Business Administration in Accounting from the University of Texas at San Antonio. He has served as Vice President and Treasurer of the Company since March 2019. Prior to joining Kirby, Kurt was Treasurer for Pacific Drilling, S.A. and also held various finance roles of increasing responsibility including Director of Corporate Finance at FMC Technologies.

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.