Our Management Team


John Treece

John Treece

President & CEO

Mr. John Treece founded DMA Holdings, Inc. in 2007. Mr. Treece brings the vision and strategic direction which has driven DMA’s advancements since the company’s inception.

With a 28-year career that began in sales, Mr. Treece quickly ascended to senior sales management positions before transitioning into product development and marketing. Mr. Treece’s marketing experiences include senior product management positions including brand manager and Director of Global Product Development. As the Director of the Global Product Development Group he oversaw an annual $48 million product development budget with worldwide responsibilities for all product research and development. After several interim assignments, Mr. Treece and his family lived and worked in Europe for 5 years as the Managing Director of a $260 million revenue business unit for a Fortune 500 company.

In 2002, Mr. Treece returned to the USA and acquired Atlantic Automotive Enterprises, a remanufacturer / manufacturer of automotive steering systems. Under his leadership, the company grew to become one of the leading suppliers to the automotive aftermarket with leading “first-to- market” product lines. Mr. Treece pioneered the EPS (electronic power steering) remanufacturing effort in 2009 as one of the first to venture into this new steering technology. In 2015, Mr. Treece sold the company to dedicate 100% of his time to the development and growth of DMA.

Mr. Treece has an extensive 20 years of international business experience traveling and
working in Asia, Europe, Africa, and the Middle East. He is considered a leading expert in building and developing business relationships with manufacturers in China.

Mr. Treece holds an equally impressive educational background with a BA from the University of North Carolina-Chapel Hill and an MBA from the University of Chicago. He continues attend executive education programs and is a promoter of “lifelong learning”.

In 2010, Mr. Treece was awarded Impact Executive of the Year for the Automotive
Aftermarket Industry. Mr. Treece also serves as the Vice-Chairman of the Import Vehicle
Committee of the AutoCare Association and actively participates in legislative affairs on behalf of the industry. Mr. Treece continues to be invited as a guest speaker or panelist at national sales and marketing seminars and continues to actively participate in executive industry forums.

    Steve Bertling

    Steve Bertling

    Chief Financial Officer & Chief Operating Officer

    Mr. Steve Bertling joined DMA Holdings in December 2007 as the Chief Financial Officer. As the CFO/COO, Mr. Bertling provides both operational and programmatic support to the organization. His primary responsibilities are to plan, develop, organize, implement, direct and evaluate the fiscal functions of the corporation in accordance with generally accepted accounting principles and other regulatory and advisory organizations. He has been responsible for implementing new technology solutions throughout the organization as well as upgrading the company’s financial reporting systems. In 2009, Mr. Bertling took on a dual role as the company’s Chief Operations Officer.

    Prior to joining DMA, Mr. Bertling has held a series of high level financial positions during his 29 year IT and finance career. In his last position, Mr. Bertling was Vice President Controller of a Fortune 500 company. In that role, Mr. Bertling oversaw all aspects of financial accounting including treasury services, cost accounting, international financial statement consolidation, Sarbanes Oxley compliance, the audit function, the controllership function, and GAAP compliance. Mr. Bertling was responsible for the developing the annual financial plan along with monitoring the attainment of plan.

    Prior to this role, Mr. Bertling served as Director of International Accounting, involved in the management and oversight of 9 foreign subsidiaries. Mr. Bertling oversaw the annual business planning process and performed cash flow and currency exposure analysis as well as the consolidation of each foreign subsidiary’s financials into those of the overall company.

    Along with solid work experience, Mr. Bertling has an equally impressive educational background with a Master Degree in Accounting from the University of Iowa. Holding the distinction as a CPA and CMA, Mr. Bertling’s experience and education have been instrumental in building a strong conservative financial operating basis for the DMA organization.

      Greg Dilloian

      Greg Dilloian

      Executive Vice President of Sales & Marketing

      Mr. Greg Dilloian has joined DMA Sales as executive vice president, sales and marketing, after DMA acquired Sentinel Products International, LLC, a gas charged Lift Support and damper company with manufacturing in China and sales and product development in the United States. Greg will be responsible for developing and leading DMA’s strategic sales strategy across all product and aftermarket sales channels.

      “Greg brings an enormous amount of senior executive experience and aftermarket product knowledge to DMA. He is going to be a tremendous asset in helping us achieve our long term growth initiatives. He will be very instrumental in driving our advancement in the gas lift product category with our Atlas Lift brand” said John Treece, president and CEO.

      Greg has a BS degree in accounting and finance and has held various financial and administrative management positions over his career. Greg’s career spans 35+ years, beginning in finance and accounting roles with fortune 500 companies. Serving in multiple corporate and factory controllership roles, Greg gained valuable business perspective and ascended to corporate analytics and strategic leadership positions.

      In 1999, Greg moved into the OE and Aftermarket automotive segment with ArvinMeritor, a $8B global automotive and heavy truck components manufacturer. Greg gained extensive worldwide experience, buying, selling and partnering with off shore businesses. In 2002, Greg was appointed to the position of vice president & general manager of AVM Industries, Motion Control Systems, while with ArvinMeritor. In 2006, ArvinMeritor sold AVM Industries to private equity, at which time Greg was appointed to the president’s role of the new company AVM Industries, LLC. Greg served
      as president of AVM until 2011 when he was appointed executive vice president of sales and marketing for the private equity group and their portfolio of businesses.

      In 2015, Greg began Sentinel Products International, a greenfield business, marketing and selling gas charged lift supports, a north American sales and marketing extension of lift supports manufactured in China.

        Mark Harritan

        Mark Harritan

        VP Strategic Account Sales

        Mr. Mark Harritan joined DMA Sales in October 2011 as the Director of Distributor Sales. Mr. Harritan was named Vice President of Sales in 2013, responsible for instituting and managing a professional field representative agency strategy for DMA which has served to foster distributor relationships. Additionally, DMA effectively expanded its sales programs to the Mexico, Canada, and Caribbean markets and continues to grow throughout North America.

        In 2017, Mr. Harritan was named Vice President of Sales – Strategic Accounts with responsibilities for directly managing and building the company’s relationships with its largest customers.

        Prior to joining DMA, Mr. Harritan’s professional experience included an extensive sales
        background in the financial services industry. He provided counsel and advised on a variety of financial products for small and medium sized business as well as individuals. He graduated Summa Cum Laude from East Carolina University where he majored in Business with a concentration in Marketing.

          Olga McIntyre

          Olga McIntyre

          Chief Information Officer

          Mrs. Olga McIntyre joined DMA Sales in August 2013. At DMA, she oversees the Web Services and Information Technology divisions. Her initiatives include improving service delivery through embracing effective and efficient use of technology; development and support of business applications; developing and improving online presence of the company; and leading strategic initiatives to transform the technology department to be flexible, adaptable and responsive to business needs.

          Prior to joining DMA, Mrs. McIntyre was an IT Consultant and Web & Software Developer for more than 10 years.

          Mrs. McIntyre holds an MBA in Web Development as well as MBA in Computer Programming.

            Sam Ferrise

            Sam Ferrise

            Vice President of OEM/OES Sales

            As Vice President of OEM/OES sales for DMA Sales, Mr. Sam Ferrise is responsible for developing strategic account relationships within the OEM/OES channels of the automotive aftermarket. Mr. Ferrise brings more than 40 years of experience in OEM/OES sales distribution channels, as well as the commercial vehicle tire and parts industry.

            He most recently served as the President and CEO of Clarcor, Inc.’s Engine/Mobile Filtration Group, which consisted of Baldwin Filters, Inc., an aftermarket parts manufacturer with a wide-range of air, lube, fuel and hydraulic filtration products.

            During his tenure at Clarcor, Ferrise played a pivotal role in the Engine/Mobile Filtration Group’s acquisition of Stanadyne, a fuel filtration supplier. He was also instrumental in helping to grow the company’s sales from $227 million in 2001 to $605 million in 2015.

            Prior to that, Mr. Ferrise spent 20 years with Bandag, Inc., where he served in a number of managerial positions, including COO.

            Mr. Ferrise holds a bachelor’s degree in public relations, as well as a minor in marketing from Bowling Green State University.

              Larry Clark

              Larry Clark

              Director of Product Management

              Mr. Larry Clark joined DMA Sales in February 2016.

              As Director of Product Management, Mr. Clark is responsible for collaborating with the Sensen manufacturing facility, in China, to coordinate all product development efforts for the North American market. Mr. Clark and manages the product development team in Tabor City and ensures the appropriate prioritization and inspection of all products is done in accordance with technical specifications, quality and product functionality.
              Under Mr. Clark’s leadership, DMA has expanded it’s product line offerings include many “first – to-market” vehicle fitment applications. Mr. Clark also oversees DMA’s electronic cataloging effort and makes sure it is kept up-to- date and the data it contains is both accurate and precise.

              Mr. Clark is an automotive industry veteran with more than 25 years experience in automotive product development with an extensive technical background. Mr. Clark hosts the online YouTube series “Shop Talk with Larry” as an educational opportunity for service technicians.

              Prior to joining DMA, Mr. Clark held a series of positions in forecasting, purchasing, accounting, auditing, cataloging, quality control and customer service. He also holds an impressive educational background with a BS in Business Administration from the College of Charleston and an MBA from The Citadel.

                Maria Treece

                Maria Treece

                VP of Operations

                Mrs. Maria Treece joined DMA Holdings in 2017 as the Director of Human Resources and Customer Service. Mrs. Treece is responsible to plan, direct and coordinate the administrative functions of the organization, serving as a link between the organization’s management team and its employees. In addition, she is responsible to ensure the customer experience is consistently at the highest level.

                Prior to joining DMA Sales, Mrs. Treece served as Vice President and General Manager of Atlantic Automotive Enterprises, a remanufacturer/manufacturer of automotive steering systems, for fourteen years. Her areas of responsibility over this period included HR, Customer Service, Supply Chain domestically and internationally, inventory control and production management, and accounting oversight. She was instrumental in helping to grow the company into one of the industries leading suppliers of new and remanufactured steering system products.

                Her vocation to the automotive industry extends further, as early in her career, she worked as a Compounder in the Tire Technology research and development group with Kelly Springfield Tire Company. From there, she transitioned to a mid-west medical device manufacturer, where she was cocreator and author of a customizable laboratory compliance software system for medical facilities to ensure compliance with OSHA and CLIA regulations. Mrs. Treece conducted national seminars and training programs on related compliance topics and later served as the company’s division QA/QC Corporate Safety Compliance Officer. Mrs. Treece holds a bachelor’s degree in Chemistry from Virginia Tech and has participated in numerous executive level training programs. As a Pittsburgh area native, Maria is passionate about all Pittsburgh professional sports teams but is especially a diehard Penguin’s hockey fan.

                Maria is known for her love of dogs and on most days is joined in the office by her baby “Louis”, the family’s English bulldog.

                  Falin Bowers

                  Falin Bowers

                  Manager, Supply Chain & Logistics

                  Prior to joining DMA, Falin worked as a Supply Chain Planner at Husqvarna. Her experience included integrating the supply chain to suppliers and ensuring high product fill rates. Falin brings this knowledge and experience to DMA that will be instrumental in streamlining the DMA supply chain.

                  Falin will work with DMA Suppliers to provide longer range forecasts to ensure a steady flow of DMA products for our customers. Her daily duties will also include monitoring customer demand patterns and keeping supply in balance with demand.

                    Sandi Clark

                    Sandi Clark


                    Mrs. Sandi Clark has been named Controller for DMA Sales. In her new role, Mrs. Clark will report to Steve Bertling, chief financial officer.

                    Previously, she served as accounting and human resources manager for MCH LLC. in Concord, N.C.

                    Mrs. Clark holds a bachelor’s degree in political science from the College of Charleston. She also brings more than 35 years of experience in accounting to her position.

                    “Be happy now,” said Clark. “You only get one try to enjoy life.”







                      Sue Delaney

                      Sue Delaney

                      Manager of Marketing & Creative Services

                      Sue Delaney joined DMA Sales as Creative Design Specialist in March, 2012. In her position as Manager of Marketing & Creative Services, she is responsible for all photography of product; layout and design of catalogs, flyers and other printed materials; as well as designing graphics for the website. Mrs. Delaney creates the email blasts, adds creativity to the videos for Word on the Street and the installation of shocks & struts videos. Every year, she designs & creates a fresh new look for DMA’s booth at the automotive industry’s AAPEX show in Vegas. Her collaborative designs have won 6 awards at this prestigious show.

                      Mrs. Delaney originally hails from Canada where she co-owned a successful sign business for 15 years. She has over 30 years of extensive experience in graphic design, which she applies to her creative position at DMA.

                        Sarah Kenney

                        Sarah Kenney

                        DC Operations Manager

                        Mrs. Sarah Kenney joined DMA Sales in January 2013.

                        As the Distribution Centers Operations Manager for DMA, Mrs. Kenney is responsible for the management of DMA’s three DC facilities. She oversees and manages the daily order receiving and shipping activities of all distribution personnel, across multiple departmental functions, facilities and shifts. She is also responsible for overseeing the delivery of all inbound shipment containers as well as preparing the facilities to quickly handle the inventory of products so that they are ready to be processed for orders and shipped. In addition to her operational duties and responsibilities, Mrs. Kenney directs and supervises all facility-related maintenance and groundskeeping activities.

                        Mrs. Kenney has over 25 years of professional experience in distribution receiving, shipping and management.  Prior to joining DMA, Mrs. Kenney was a supervisor over product shipping for an international HVAC manufacturing company.

                        Mrs. Kenney was also named the recipient of DMA Goodpoint’s “Employee of the Year” award for 2016.

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