Staff & Leadership

At the Tulsa Port of Catoosa, we pride ourselves on being a dedicated and reliable staff with a long history of professionalism and competence. Everyone on our team has a passion for inland river transportation, manufacturing and the region our Port serves. Whether you are interested in shipping on the waterway, have an accounting question, would like to locate in our industrial park or would like to know more about Oklahoma Maritime Education, we are here for you every step of the way.

David L. Yarbrough

Port Director

David Yarbrough joined the staff of the Tulsa Port of Catoosa as manager of operations in 2006. He was promoted to Deputy Director in November 2008, and Port Director on February 1, 2017. Mr. Yarbrough graduated from Oklahoma State University with a Bachelor of Science in Civil Engineering. He is a licensed and registered professional engineer and is responsible for all major construction on the Port.

Daniel Grisham

Deputy Director

Daniel became a key team member at the Tulsa Port in 2016 with the role of Assistant Manager of Operations. In September 2018, Daniel was promoted to Manager of Operations & Engineering. Daniel obtained his Bachelor of Science Degree in Civil Engineering from Oklahoma State University. Prior to coming to the port, he worked at the U.S. Army Corps of Engineers for seven years. Daniel enjoys the challenges of managing the demands of a busy inland river port and industrial park. He oversees the design of Tulsa Port projects, along with the site layout, scoping, estimating, construction and the close-out of these projects. He is married to his amazing wife, Kelsey, and has two Labradors named Shadow and Stormy (aka The Minions). As a hobby, Daniel loves to travel to different countries and is constantly planning his next trip.

Andrew Ralston

Economic Development

Andrew Ralston joined the staff of the Tulsa Port in August 2018 to lead their economic development efforts. Andrew previously served in the economic development department of the Tulsa Regional Chamber for five years recruiting new companies and assisting existing businesses to eliminate barriers to growth. During that time, he worked on projects that have created nearly 9,000 new jobs and brought over $500,000,000 in new capital investment to the Tulsa Region. Outside of work, Andrew volunteers with several organizations (including Tulsa Global Alliance and the Signature Symphony) and plays music with a jazz/swing band called “The Zuits.”

Jacob Mauldin

Environmental Health & Safety Specialist

Jacob obtained his Bachelor of Science Degree in Environmental Health and Safety Management from Northeastern State University and previously worked as an environmental reporting consultant for companies across the United States and Canada. Jacob is looking forward to using his skills and knowledge of environmental regulations and safety to assist port companies with their EHS needs. Outside of work, Jacob likes to play pickleball and is an avid movie buff.

Susan Murphy

Accounting Manager

Susan Murphy joined the staff of the Port of Catoosa in 2014 as the Accounting Manager. Ms. Murphy graduated from Oklahoma State University with a Bachelor of Science in Business Administration – Accounting. Susan has a background in the financial industry, having spent over twenty years in student loan administration, credit union management and bank marketing prior to joining the Port.

Charlotte Pyle

Executive Assistant

Charlotte Pyle has gained a vast amount of knowledge of the Tulsa Port of Catoosa after working in the Port Authority office for the past 15 years. She has worked with the Business Development and Marketing departments and is now the Executive Assistant to the Port Director. She came to the Port with 10 years of experience in marketing. In 2000, she pursued her passion for flying and earned her Private Pilot’s License! She is from Wichita, KS and studied at Tulsa Community College and Rogers State University. Charlotte is married, has two sons and four grandchildren. She enjoys hiking, fishing, camping and travelling. She loves to do all those things with her beautiful grandchildren.

Kristi Cagle-Hubler

Senior Accounting Clerk

Kristi Cagle-Hubler is the Senior Accounting Clerk who handles the daily financial responsibilities of the Port Authority with the highest integrity and moral judgment. She joined the Port Authority in 2014. Kristi is a Rogers County native and grew up down Keetonville Road. She had the opportunity to watch the Port grow over the years. She still proudly lives in Rogers county in Chelsea, OK with her husband, Billy. They have four children and two grandbabies. They raise registered Boer Goats for show and travel all over the U.S. with their goats. They also run a small farm of around 100 head of goats and a few Border Collie dogs. Kristi says that “There is nothing quite like the smell of puppy breath or the joy of seeing new life born on the farm.” Kristi owns a small home-based craft business and enjoys being a vendor at livestock and craft shows a few times a year. She has always been involved in 4-H and FFA and was able to raise her children in those great programs. She studied Agricultural Communication at Oklahoma State University and currently serves as a board member for the Collinsville Tri-County Fair and as Superintendent for the goats at Rogers County Free Fair.

Sheila Shook

Workforce & Education

Sheila Shook leads the Tulsa Port’s Workforce and Education efforts. She works with students, adults, industries and communities to help them learn about inland river transportation, careers in manufacturing and the Tulsa Port of Catoosa. Sheila believes that it is very important for people to become aware of the incredible asset that the Tulsa Port and the waterways are here in Oklahoma. Sheila was very excited to join the Tulsa Port staff in October 2015. She has been able to reach over 10,000 people per year in tours and presentations. She has a Bachelor’s Degree in Early Childhood Education and spent 20 years as a preschool teacher and also taught adult education courses. Family is the most important thing to her, so she spends as much of her free time as possible with her husband, 2 sons, 6 nieces and nephews and many other family members.

Robert W. Portiss

Port Director Emeritus

Bob Portiss joined the Port of Catoosa staff in March 1973, and on July 1, 1984, Portiss was elevated to Port Director serving until 2017. Portiss is a five-term Chairman of the National Waterways Conference in Washington, D.C. He has also served as the Chairman of the Inland Waterway Committee of the National Transportation Research Board. Additionally, he served 6 years as a member of the National Marine Board. For his leadership on the McClellan-Kerr waterway, he has been named a Water Pioneer by the State of Oklahoma.
In August 2009, Portiss was awarded the Bronze de Fleury Medal by the U.S. Army Corps of Engineers. In October 2013, he was named Communicator of the Year and received a Bronze Quill award from the Tulsa chapter of the International Association of Business Communicators. And in October 2015, Portiss was named a Champion of Change in a ceremony at the White House in Washington, D.C., honored as a leader who has devoted time and efforts to developing innovative ways to use transportation to help his community reach new heights. Portiss holds both undergraduate and graduate degrees in Economics from North Dakota State University.