Leadership Team


Our leadership team has more than 100 years of combined management experience in the nutritional industry. Here are a few of our top leaders and some of the expertise they bring to your product.


Robert Matheson, CEO

Robert has successfully built and managed five nutritional contract manufacturing facilities. He joined Protein Research as a partner in 1991, focusing on the expansion of sales, production, research and development, and quality control. Protein Research has many industry firsts- including partnering in the development of Power Bar.  Which propelled Protein Research into its current position as one of the fastest-growing vitamin premix companies on the West Coast. Robert is still very much hands-on in the business, and instrumental in ensuring that Protein Research has all the certifications, state-of-the-art manufacturing equipment, quality standards, and highly trained staff to compete for business anywhere in the world. He is the driving force behind Protein Research’s implementation of the latest manufacturing technology. Robert’s compassion for his employees has fostered longstanding tenures across the majority of his staff.

Ashley Matheson, President

Ashley‘s career at Protein Research began during college, with an inside sales position at her mother’s private “Body Ammo Nutraceuticals” label; then a division of Protein Research. It was at Body Ammo that she was first introduced to and fell in love with the nutritional industry. After graduating with a BS in Business Administration and Marketing she moved over to the manufacturing side of Protein Research. She has since worked her way through every aspect of the business, including Purchasing/Supply Chain Management, Executive Account Management, Vice President of Operations, and now, President. It was in these multiple roles that she gained extensive logistical knowledge, negotiating experience, expertise in locating raw materials, supplier and vendor relationships, customer service, and operational expertise. The same contacts and relationships she established back when she began in purchasing are now close friends and essential to her growing network of trusted colleagues. In her current role as President, she continues to improve and expand Protein Research’s existing customer base and is constantly prospecting new opportunities for the company to help create the best value possible for clients and partners. Ashley is thankful for the mentorship of her father and CEO Robert Matheson, and enjoys the dynamic of working alongside him as well as PR’s executive team to create and implement the culture they believe leads to success; success in people, performance and overall growth.

Melissa Dethardt , Senior Vice President

As Senior Vice President, Melissa heads Protein Research’s Quality, Customer Service, Human Resource, IT and Finance teams. Her goals are to continue keeping the company aligned with providing: a safe environment for employees; quality of products that are above regulatory standards; and a customer experience that creates a long lasting partnership. Melissa also works hard to keep Protein Research’s IT systems and programs at a peak to keep the company moving to be a contract manufacturer at the top of technology. Continuing to learn from and develop Protein Research’s outstanding team of employees, Melissa is excited to be a part of this company and see what incredible prospects are around the corner.

Gary Troxel, Business Development

Gary has a long history (35+ years) in the Nutraceutical Industry and strong relationships with decision makers across many different sectors. He mentors the younger executive team at Protein Research sharing his knowledge, strategies and objectives. Gary knows that a well-trained executive team facilitates growth objectives and that the corporate culture is the heart and soul of a great company. He understands the importance of its customer base and makes sure that every customer knows that their project is important by open communication with the entire Protein Research team. He is also a good friend to the family owners with this relationship covering 25 years. Gary has witnessed the growth of this industry and appreciates the great quality products produced at Protein Research that improve the health of customers/consumers from young to old, a legacy that he encourages every day.

Sheri Elliott, Vice President of Quality

Sheri is a Food Scientist with 24 years of experience in Brand and Private Label manufacturing of drugs, dietary supplements, foods and cosmetics. She joined the Protein Research team in 2018 and is currently responsible for Corporate Quality and Compliance.  She is well versed in regulatory compliance and is responsible for the development and oversight of Protein Research’s Food Safety programs.  Sheri ensures that all nutritional and dietary supplement products produced are at the highest quality and are safe for your consumers

Nina Betts, Vice President of Finance

Nina joined Protein Research as Accounting Manager in 2012. Throughout her years with Protein Research, she has been promoted and assumed various responsibilities within the Company. She was named Vice President of Finance in 2016. As VP of Finance, Nina oversees daily operations of the finance and accounting department, manages the preparation of all financial reports, and prepares annual budgets and business plans.  Prior to joining Protein Research, Nina was the Controller at Pump-It-Up, a Premier Birthday Party Entertainment Franchise with locations across the U.S.  Nina brought with her over 20 years of corporate finance and management experiences.  Nina strives for excellent at Protein Research by working alongside with Protein Research’s Executives and Managers to foster on the success of everyone at Protein Research.