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

Daniel Grisham

Deputy Director

The Port promoted Daniel Grisham to deputy director in July 2019, serving previously as the Manager of Operations & Engineering. In this role, Daniel oversees the design of Tulsa Port projects, along with the site layout, scoping, estimating, construction and the close-out of these projects. Prior to coming to the Port, he worked at the U.S. Corp of Engineers for seven years. Daniel obtained his Bachelor of Science in Civil Engineering from Oklahoma State University. He is married to his wife, Kelsey, and he 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.

Susan Murphy

Accounting Manager

Susan Murphy has served as the Port’s accounting manager since 2014. She brings to the Port more than 20 years serving in the financial industry in student loan administration, credit union management and banking marketing. Susan holds a Bachelor of Science in Business Administration in Accounting from Oklahoma State University.

Sheila Shook

Workforce & Education

Sheila Shook leads the Port’s Workforce and Education efforts as the Maritime Education Coordinator. She works with students, adults, industries and communities to help each group learn about inland river transportation, careers in manufacturing and the Tulsa Port of Catoosa. Since joining the Port in 2015, she has been able to reach more than 10,000 people every year through tours and presentations. Sheila has a Bachelor’s of Science in Early Childhood Education, and she spent 20 years as a preschool teacher and adult education teacher prior to joining the Port. Sheila spends her free time with her husband, two sons, six nieces and nephews and many other family members.

Andrew Ralston

Economic Development

Since 2018, Andrew Ralston has led the Port’s economic development efforts. Previously, he served as the Director of Existing Business and Energy for the Tulsa Regional Chamber of Commerce. For five years, he recruited new companies and assisted existing businesses in eliminating barriers to growth, which resulted in projects that created nearly 9,000 new jobs and brought in $500 million in new capital investment to the Tulsa region. In addition, Andrew volunteers with several organizations like the Tulsa Global Alliance and Signature Symphony. He also plays with the jazz/swing band “The Zuits.”

Jacob Mauldin

Environmental Health & Safety Specialist

Jacob serves the Tulsa Port as the Environmental Health & Safety Specialist, utilizing his experience with environmental regulations and safety to assist port companies with environmental, health and safety needs. Previously, Jacob worked as an environmental reporting consultant for companies across the United States and Canada. Jacob obtained his Bachelor of Science Degree in Environmental Health and Safety Management from Northeastern State University. Outside of work, Jacob likes to play pickleball and is an avid movie buff.

Charlotte Pyle

Executive Assistant

Charlotte Pyle serves as the executive assistant to the Port director, after more than a decade working with the Port’s business development and marketing departments. Previously, Charlotte worked for 10 years in marketing. She studied at Tulsa Community College and Rogers State University. Charlotte and her husband, two sons and four grandchildren enjoy hiking, fishing, camping and traveling together in their free time.

Kristi Cagle-Hubler

Senior Accounting Clerk

Joining the Port in 2014, Kristi Cagle-Hubler serves as the senior accounting clerk where she handles the daily financial responsibilities of the Port Authority. Kristi studied Agricultural Communications at Oklahoma State University, and she also serves as a Collinsville Tri-County Fair board member and as Rogers County Free Fair Superintendent. In addition to her work at the Port, Kristi runs a small Boer Goat farm in Cheslea, Oklahoma, a home-based craft business and is a vendor at livestock and craft shows throughout the year. She and her husband have four children and two grandchildren.

Lisa Bradley

Accounts Payable Clerk

Lisa Bradley serves as the Tulsa Port’s accounts payable clerk, where she brings more than 20 years of experience as a senior financial analyst with a large telecommunications company. Lisa studied business administration at Oklahoma State University. She enjoys spending time with her husband, son, two daughters, and granddaughter. And in Lisa’s free time, she enjoys traveling, attending concerts, plays, and movies, and hosting game nights with friends.

Shiloh Blake

Administrative Assistance

Shiloh Blake joined the Tulsa Port as an administrative assistant and receptionist, drawing on her 15 years of experience as an administrative assistant with other firms. Shiloh earned an associate’s degree in business administration and has studied administrative leadership at the University of Oklahoma. She and her husband share six children together. She enjoys cooking, researching genealogy and spending time with her family and friends in her free time.

Patrick Black

Maintenance Supervisor

Patrick Black serves as Tulsa’s Port maintenance supervisor, and he brings more than a decade of experience with him in construction. In addition, Patrick served in the National Guard for 10 years. Patrick holds an associate’s degree from OSUIT in construction management from Oklahoma State University Institute of Technology. Married to his wife, Amy, Patrick enjoys camping and riding four wheelers with his family.

J.D. Barela

Maintenance Technician

J.D. Barela III joined the Tulsa Port as a maintenance technician, previously working in construction for other firms for years. J.D. is a heavy equipment operator. When not working, J.D. enjoys spending time with his dog while camping, grilling or off-roading.

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.