Leadership Team

The leadership team at Sigma Supply brings together years of diverse experiences in the packaging industry. Led by the Hamby family, Sigma team leaders shape the vision of providing world-class packaging solutions to our customers.

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Maggie Hamby


As President of Sigma Supply of North America, Inc., Maggie’s lifetime experience and exposure with the family business has served her well in her broad responsibilities within the company. Maggie also represents SSNA and its involvement with the Women’s Business Enterprise National Council (aka: WBENC).

Maggie attended the University of Arkansas, Fayetteville, AR

Scott Hamby

Vice President, Operations

In addition to the multiple cross functional leadership roles within the company, Scott’s current primary responsibilities include the overall operations of the company. His lifetime experience and exposure with the family business has served him well with his broad responsibilities within the company.

Scott attended the University of Arkansas, Little Rock

“Banks” Daniel B. Hamby III

Vice President, Sales

Banks also engages in multiple leadership roles within the company. His primary focus is managing the overall sales of the company. His lifetime experience and exposure with the family business has also served him well with his broad responsibilities within the company.

Banks attended the University of Arkansas, Fayetteville

Sales Team
Alan Hughes, Bill Hollingsworth, David Breitenberg, John Dale, Kevin Anglin, Marty Whitmire, Megan Johnson, Robert Williams, Trey Guenard

Jeff Maness

Chief Operations Officer

As the Chief Operations Officer, Jeff assists with Sigma Supply North America day-to-day departmental interactions. Jeff’s professional experience in operations management with an emphasis in the areas of process control, quality management systems, domestic and international purchasing, and customer service ensures that Sigma Supply will continually pursue results focused process improvements in order to provide our customers the competitive edge in the markets they serve.

Prior to Jeff joining SSNA he served as Director Of Operations within the Protective Packaging Division of Illinois Tool Works (ITW) overseeing multiple locations in North America and provided consulting services to sister divisions in Denmark and China.  Before joining ITW Jeff worked in the automotive industry as a Plant Manager with the Dana Corporation headquartered in Toledo Ohio for 10 years.

Jeff is a graduate of the University of Arkansas with a BS in Finance.

Wayne McElroy

Operations Manager

Wayne’s executive role over all Sigma Supply warehouse operations nationally encompasses the major responsibility to make sure that the company runs smoothly and that we achieve our company goals to ensure that incoming vendor materials and outgoing customer orders are on-time every time! Wayne is a true industry expert with over 25 years of distribution management operations.

Steve Messinger

Director of Technical Services

Steve brings over 25 years of engineering and automation experience to the organization. He started his engineering career serving as a proud member of the U.S. Army for 6 ½ years. Afterwards he continued to expand upon his engineering training to include mechanical, electrical, and fluid power systems and design. Steve is currently responsible for managing all aspects of Sigma’s growing service & equipment division including; vendor relationships, systems design, programming, integration, technical support, and an industry-leading team of technicians performing equipment installations and service for new and used equipment.

Gregg Davidson

Director of Information Technology

Gregg is responsible for the technical services involving computer systems, communications system, EDI, for all company locations in addition to managing the vendor relationships to help ensure that flow of information between our customers and Sigma Supply performs at the industry’s highest level for over 10 years.  Overall, he has 15 years of experience in Information Technology.

Gregg is a graduate of the University of Arkansas, Little Rock, with a degree in Information Science.  Also holds undergraduate and graduate degrees at Harding University and the University of Central Arkansas, along with several IT industry certifications in networking and security, including high level certifications from Microsoft.

Rich Lawless


Rich joined the Sigma team in June 2011 as Controller.

Rich has over 10 years’ experience in providing professional services across a broad range of accounting areas including financial, tax, consulting, and audit.  Prior to joining Sigma, Rich worked in the public and private accounting fields.  Rich is also a veteran of the United States Navy.

Bachelor of Accounting, University of Arkansas at Little Rock, 2005

Cody Marsh

Assistant Controller

Graduated from the University Central Arkansas (UCA) in December of 2006 with a BS in Science in Accounting. Cody was hired soon after graduation as the Plant Accountant for Shippers Products in Sheridan Arkansas where he excelled in GL, AR, AP and product cost accounting.

In 2014 based on limited growth opportunities at Shippers, Cody accepted an opening at Falcon Jet where he specialized in finance, aircraft services, budgeting, bills of materials, taxes, and ERP. Over the course of 18 months he earned the title of Assistant Controller.

In 2016 Cody joined the Sigma Supply Team as Assistant Controller with a focus on our AP Department and Sales Rep commissions. Cody has been married to his beautiful bride Brandy and they have 2 daughters Blythe and Etta. Cody and his family are avid outdoors people that enjoy camping, fishing and hunting only a regular basis.

Mary Harrell

Director of Human Resource

Mary began her career with Sigma Supply of North America as Office Manager in 2006. Currently she is Director of Human Resources over all SSNA locations and is responsible for implementing HR management strategies, performance management, employee benefits, and employee relations policies and strategies. She promotes values and programs that retain a high performing and motivated workforce, and oversees direct current staffing.

Prior to joining Sigma Supply of North America, Mary has over 20 years of experience and knowledge in Accounting, Inventory, Administrative Leadership, any many other talents.

Jennifer Dale

Marketing/Web Development

Jennifer Dale is over Marketing/Web Development at Sigma Supply, with responsibility for marketing programs, brand management, corporate sponsorships, business communications, and graphic design. Prior to joining Sigma Supply, she worked in business development and marketing for over 10 years. Her primary roles are maintaining daily maintenance and development of the SSNA company website and intranet site, as well as, communication between staff and sales force, vendors, and customers. She handles everything from organizing and producing large events to standardizing forms and anything in between.

Jennifer’s greatest strengths are her creativity, drive, and leadership. She thrives on challenges, particularly those that expand the company’s reach. Her most recent project involved a Sigma Supply’s National Sales Convention that SSNA hosted, bringing in our most recognizable vendors to make contact with over 100 Account Managers SSNA currently has.

Meagan Criss

Marketing/Web Development

Meagan Criss is a team member of the Marketing/Web Development at SSNA, with responsibility for marketing programs, brand management, web presence, and graphic design. Marketing covers most of Sigma’s daily communication between staff and sales force, vendors, and customers. Marketing’s most recent project involved SSNA’s 2018 National Sales Convention, bringing in our most recognizable vendors to make contact with SSNA 100 plus Account Managers.

Prior to SSNA, Meagan brings over 10 years’ experience in business communication, graphic design, web development, as well as, administrative and organizational leadership. She was hired in 2014 and since then her primary roles are to maintaining Search Engine Optimization results, daily maintenance and development of the SSNA company website and internal Intranet site. She also organizes communication & promotion on all avenues of social media. Meagan is affiliated with Google, Google+, AdWords and Analytics for maintaining strategic marketing. Meagan’s greatest strengths are her organizational abilities, creativity, and her program knowledge. She thrives on challenges, particularly those to create company procedures and simplify workflow.

Larry Dworsky

Purchasing Manager

Graduate University of Texas, Arlington with a Bachelor of Science in Marketing and 21 years of purchasing experience in the packaging industry.  Over 30 years in packaging history with production, warehousing, delivering, and accounting experience.

Joined Sigma purchasing team January 2017.

Kristen Windham

Customer Service Manager

Kristen began her career with Sigma in 2004 as the receptionist. Shortly after she moved into Customer service to begin working with several accounts, as well as handling some accounts payable. Through her journey with the company, she has worked with our National Accounts and sales reps striving to provide great customer service.

As the customer service manager in the Hot Springs, AR branch, she enjoys working with an elite team and providing support and training all new hires for the customer service departments.

Attended National Park College – studied information technologies

Previous job skills – accounts payables (aerospace industry)

Enjoy outdoors/bowling/ spending time with family

Heather Burns

Transportation Coordinator

Heather has previously worked in both the trucking and logistics businesses and has brought that knowledge and experience to Sigma Supply to help minimize our shipping costs and maximize efficiency.  She is working directly with several major trucking companies to leverage better rates as well as many logistics companies to obtain the most competitive rates, while helping Sigma Supply deliver orders on time.


Heather has a BS in Marketing Logistics from Arkansas State University, Jonesboro.

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