Our Team

Margaret Pederson 

Chairwoman, Chief Executive Officer and President

Margaret has a background in running service and technology companies,  bringing big company tools and processes while continuing the entrepreneurial spirit of Xamax. She focuses on developing and implementing an aggressive growth strategy, expanding our team,  commercializing Xamax new products and adding strategic alliances.  Her earlier career included division president and other senior management roles of Fortune 500 companies.  Her education includes Harvard Business School, London School of Economics, and University of Virginia (Honors Program). Margaret is an experienced director of public and private companies.


Bob Markowski 

VP/General Manager

With over 21 years at Xamax, Bob combines his varied experience in customer account management, operations, sourcing, and new product development to lead business strategy to the next horizon. His efforts consistently exceed customer expectations and keeps Xamax at the forefront of product innovation.

Bob holds a BS in Mechanical Engineering from the University of New Haven, MS in Operations Management and an MBA in Sales/Marketing from Rensselaer Polytechnic Institute. In addition, throughout his career he holds 25 patents in the fields of electrical/mechanical devices and thermoplastic composites and processing.

Kelly Sardo

Chief Financial Officer

Kelly has almost 30 years of accounting and finance experience from various industries.  She studied at Bentley University where she obtained her B.S. in Accountancy and is also a CPA in the state of Connecticut.


Denise Medved

Chief Sales Officer

Denise is an expert on growing companies through processes, technology, data and training.  Her two decades in sales management has driven significant revenue growth and resulted in high achieving teams. She thrives on identifying technologies and methodologies for improvements and implementing changes. Denise is also a successful entrepreneur and published author.

Carol Evancovitch 

Sr. Account Manager/Buyer

Carol provides in-house sales and customer support providing answers quickly and efficiently. Her friendly, professional manner delights customers, and her extensive twenty year career at Xamax has enabled her to acquire significant knowledge of company’s products, services, processes and timelines.


Brandon O’Donnell

Sales Account Manager

Brandon applies his experience and knowledge in the Thermoplastics, Thermoset and Composite Industries to aid customers in their material requirements. He works closely with current customer as well as developing new business opportunities. Brandon strives to makes sure the customer has the correct materials for their applications in a friendly, professional, and timely manner.

Randy Zajac

Randy Zajac

Composite Sales Engineer

Randy Zajac joined the Xamax team with almost 2 decades of composites experience. He has specialized in thermoset resins and adhesives used in fiber reinforced materials. With experience in R&D to Application Development, to Process and Manufacturing Engineering he always looks forward to helping clients in the composites field and beyond.

Jon Malish

Sales Account Manager

Jon Malish comes to Xamax Industries with over a decade of paper and non-woven converting sales experience. He looks forward to working closely with your team to recommend the right materials for your applications. Jon is a graduate of University of New Haven and is a retired runner who focusses on swimming for the next adventure.

Jimmy Church

New Business Account Manager

Jimmy is an experienced sales leader from the public and private sectors. He has several years of experience managing the full sales cycle of key, strategic accounts, including Fortune 500 companies. As a sales leader, he anticipate the needs of the customer, and consistently strives to improve the sales process and customer experience to drive value for everyone he connects with. Jimmy has a BA in Philosophy from the University of Washington and an MA in International Economics from Johns Hopkins SAIS.

Dan Higgins

Plant Manager

Dan has a 25 year record of productivity, professionalism and performance in operations. He is a Certified Quality engineer with strong knowledge of lean manufacturing and Six Sigma. He is a hands-on leader with experience in every phase of the manufacturing, engineering and quality process.


Kevin Coster

Quality Manager

Kevin Coster has joined the XAMAX team as Quality Assurance and EHS Manager. Kevin holds an MBA from the University of Phoenix and a bachelor’s degree in Electrical Technology from SUNYIT-Utica / Rome. He is a Quality professional with more than 30 years of experience in manufacturing products serving many different industries.

We are excited about the enthusiasm Kevin brings to the XAMAX team, utilizing his proficiency in SPC, DOE, FMEA and overall process improvement to achieve the goals of our stakeholders and meet our customers’ ever-increasing expectations.

Aliya Carter

New Product Development Engineer

Aliya Carter joins Xamax Industries as the New Product Development Engineer with an MS in Materials Science & Engineering from The Johns Hopkins University and a BS from the University of Connecticut. Aliya brings a vast scientific background to the team in more than five fields of materials science with six years of intense engineering research experience involving lab work, experimental design & setup, data analysis and more. Her skills assist the team in research & development, product innovation, technological and engineering specifications, and product solutions to our customers.

In Memory

Martin Weinberg: Xamax Founder, President, CEO and Chief Inventor
Engineer | Entrepreneur | Inventor | Leader

Martin Weinberg joined Sterling Paper as a student engineer. He led manufacturing and product development for fifteen years before leaving to found Xamax Industries in 1992. Martin later merged the two companies and grew Xamax Industries from a US focused company providing electrical insulation to a global company producing industrial, consumer and technical products. Martin lived his philosophy ‘Imagination Becomes Reality’ by making it his daily practice: writing dozens of patents and creating inventive products to solve customer problems.

Martin taught his colleagues, both internally and externally, many lessons:

1. Create your own path; 2. Live fully and appreciate life; 3. Give willingly; 4. Don’t give up, be creative finding solutions; 5. Be curious and keep learning; 6. Take risks

Martin fought cancer heroically, patiently, diligently. His body succumbed in October 2018 yet his spirit will continue to infuse Xamax’s vision, culture, products and customer service. His family remains committed and engaged with Xamax. All of us at Xamax are dedicated to continuing Martin’s legacy, living his values, remaining devoted to our colleagues and partners and building on the strong foundation he built.