Hinkle’s Leadership Team is committed to providing quality construction materials and services in Kentucky and the Southeast. Our industry will face challenges and changes in the future, but our leadership team’s commitment to our core values remain constant. We are individuals who live and work in your community, and as such, we strive to deliver products and services that meet and/or exceed the needs of our customers and the communities we serve.

Steven Lee


Steven Lee is the Chief Financial Officer of Hinkle Contracting.  Steven joined the Hinkle team in July 2015 with 17 years in financial leadership roles with publicly held organizations and 10 years in the family held residential construction business. Prior to Hinkle, Steven has held senior Finance & IT positions in the building product manufacturing space, with responsibility for North American operation and technical finance.

Steven also served as COO/CFO of Lee Homes, Inc. in Somerset Kentucky for 10 years.  This family owned business began by his father was vertically integrated with residential development, insurance and finance arms.

Steven began his career as Plant Controller, with Hartco Flooring Company a division later integrated into Armstrong World Industries.

Steven earned his MBA-Finance from Ball State University in 2008. He received his Bachelor of Accounting from the University of Kentucky in 1988. He received his diploma in computer programing and systems analysis from Somerset Vocational school in 1985. He holds both the Certified Management Accountant (CMA) and Certified Public Accountant (CPA) credentials.

Larry Winkleman

Senior Vice-President, Development

Larry Winkleman is the Senior Vice-President, Development for Hinkle Contracting. He joined Hinkle in August of 2013 as Chief Operating Officer and assumed the role of President in June 2015. Prior to Hinkle, he worked in the heavy highway materials and construction business in Ohio for 35 years. Larry serves on several industry boards: Kentuckians for Better Transportation (KBT), Plant Mix Asphalt Industry in Kentucky (PAIKY) and Kentucky Association of Highway Contractors (KAHC). 

Larry received his Bachelor of Science in Civil Engineering from Ohio Northern University in 1978 and an MBA from Heidelberg University in 2001.

Dr. J. Gregory Gillum, CPCC

Director, Human Resources

Dr. J. Gregory Gillum, CPCC, is the Director of Human Resources for Hinkle Contracting Company, LLC. Greg has almost three decades of experience in talent acquisition and development roles. During this time, he spent 16 years as CEO of humanfusion, a management consulting firm specializing in recruiting, hiring, onboarding, and developing managers. Prior to that, he spent 6 years on the faculty of the Medical College of Virginia, and almost a decade in senior management positions with GlaxoSmithKline.

Greg obtained his doctoral degree in pharmacology from the University of Kentucky, and earned his CPCC (Certified Professional Co-Active Coach) certification from the Coaches Training Institute of San Rafael, CA. He is also certified by the Winslow Research Institute to administer and interpret their 24-trait normative behavioral assessment. Greg is also a certified trainer with Achieve Forum, an international leadership development company based in Boston, MA.

Jeff Mingus

Vice-President, Equipment

Jeff Mingus is the Equipment Division Vice President at Hinkle Contracting.  Jeff joined Hinkle in November of 2012. Prior to that, Jeff’s experience includes work in the Oil and Gas, Heavy Industrial and Water/Wastewater Construction industries. He has 29 years of experience in heavy equipment maintenance, repair, financial and compliance management. Jeff is a member of Association of Equipment Management Professionals (AEMP).

Tom Ralston

Vice-President, Sales and Estimating

Tom Ralston is Vice President Asphalt Paving for Hinkle Contracting. He began working at Hinkle in 1990. He has worked in the highway contracting industry a total of 38 years. Tom serves on several local community service boards: Paris/Bourbon Chamber of Commerce, Paris YMCA, and Hospice of the Blue Grass Advisory Board.

Tom received his Bachelor of Science in Civil Engineering from the University of Kentucky in 1978. Tom received his Professional Engineer’s License in 1983.

Tracey Bubnick

Director, Safety

Tracey Bubnick is the Safety Director of Hinkle Contracting. Tracey joined the company in July of 1999.  Prior to coming to work at Hinkle, he worked as the safety director of Southern Belle Dairy manufacturing plant located in Somerset, KY.  He currently serves on the safety and environmental committees of Kentucky Crushed Stone (KCSA) and Kentucky Association of Highway Contractors (KAHC).  He attended the University of Kentucky and recently earned his Certified Mine Safety Professional credential.

Timmy Tipton

Vice-President, Quality Control

Timmy Tipton is Quality Control Director of Hinkle Contracting, LLC.  Timmy began his career with Hinkle in 1976, working initially as part of the maintenance and clean-up crew at Natural Bridge Stone, He became the aggregate technician at Natural Bridge Stone in 1977 and gained certification as an Asphalt technician in 1979, was promoted for a window of time as a asphalt plant superintendent, returned to Quality Control as the QC Manager in the late 1980s. He serves on advisory committees for the Kentucky Plant Mix Association and the Kentucky Crushed Stone Association

Greg Howard

Vice President, Aggregates

Greg Howard is Vice President Strategy and Development for Hinkle Contracting. Greg joined the Hinkle team as a project manager in 1995 where he managed asphalt paving construction projects throughout south central Kentucky. In 2007, Greg was promoted to Vice President of the Cumberland Asphalt Division, managing all of Hinkle’s asphalt construction facilities and operations in south central and southeastern Kentucky, northern Tennessee and western Virginia. Greg was appointed interim Vice President of Aggregate Operations in January of 2017 where he oversaw all crushing operations for Hinkle until June 2019. Currently, Greg manages purchasing, sales and leasing of all properties for the company and assists leadership in the decision making and implementation of projects strategically dedicated to the growth and development of the business.

Greg holds a degree in Bachelors of Science in Civil Engineering from the University of Kentucky, and is a Registered Professional Engineer in Kentucky.

Rick Wills

General Manager, Triple Crown Concrete

Rick is a graduate of East Tennessee State University where he earned a Bachelor of Science degree. After graduation, he began his journey by joining Rinker as a mixer truck driver. That progressively led him through each area of the business, including maintenance, dispatch, plant operations, fleet management, quality control, and successive levels of responsibility. He came directly to TCC from Martin Marietta, serving as Area Manager. Rick has two decades of experience in the Ready-Mix concrete industry, and is actively involved in the National Ready Mix Concrete Association. Rick is a certified Smith System instructor, and holds certifications from OSHA Construction Safety and Health and the American Concrete Institute.

Ryan Buffington

Vice President, Finance

Ryan Buffington is the Vice President of Finance at Hinkle Contracting Company, LLC. Originally from NE Pennsylvania Ryan joined the Hinkle team in January of 2012. He possesses over twenty years of financial experience in vertically integrated construction materials businesses. Prior to joining Hinkle, Ryan held various finance roles at Pennsy Supply Inc., a division of Oldcastle Materials in Harrisburg, PA. In his time away from the office, Ryan and his wife Bridgit are ambassadors for the National Kidney Foundation and Kentucky Organ Donor Affiliates raising awareness for kidney disease and organ donation.

Ryan received his Bachelor of Science degrees in Accounting and Business Administration from Pennsylvania College of Technology/Penn State University in 2000.