Executive Bios
Robert A. Sinnott, MNS, PhD
Co-CEO, Chief Global Science Officer
Since August 2005, Dr. Sinnott has served Mannatech to further the company’s proprietary science, research and development, while initiating independent clinical trials that substantiate the company’s flagship Ambrotose product. He also manages the company’s supply chain, quality assurance/quality control and global regulatory departments. He continues to influence important industry issues, such as regulations, safety and quality of vitamins and dietary supplements. As co-CEO, Dr. Sinnott will work directly with the company’s senior sales and marketing executives and global Associates to be sure they have the products and tools to build their individual businesses and better serve Mannatech customers.
Dr. Sinnott has held scientific positions in both industry and government over the past 20 years with experience in life sciences, chemistry, biotechnology and nutrition. For the past 13 years, he has worked directly in the dietary supplement industry both in the U.S. and internationally. Dr. Sinnott earned his B.S. degree in Botany, a M.N.S. in Natural Science, and a Ph.D. degree in Plant Sciences from Arizona State University, in Tempe, Arizona. His doctoral dissertation focused on agricultural biotechnology of industrial plants, including Aloe vera.
Currently, Dr. Sinnott serves as chairman of the Senior Scientific Advisory Committee (SSAC) for the Council of Responsible Nutrition (CRN), the leading trade association representing ingredient suppliers and manufacturers of dietary supplements and functional foods including vitamins, minerals and botanical products. The SSAC is comprised of the highest ranking scientific officers of member companies. Its role is to assist the CRN with development and implementation of scientific strategy relating to scientific publications, scientific policies and programs by government agencies. Dr. Sinnott also holds Mannatech’s seat on the CRN Board of Directors.
Where wellness is concerned, quality and efficacy are the two most enduring factors in the minds of consumers. We honor this by designing the highest quality and most innovative products available.
Stephen D. Fenstermacher
Co-CEO, Chief Financial Officer
Mr. Fenstermacher joined Mannatech in November 1998 serving as CFO where he assures corporate financial accountability, strategy and transparency. His management responsibilities include: accounting, finance, HR, facilities and IT operations. During his tenure at the company, he has established a worldwide system to support international growth including the creation of a seamless down line commission system and a global framework to manage and integrate efficiently the company’s financial operations through a Swiss subsidiary.
Prior to joining Mannatech, Mr. Fenstermacher was a consultant for Kibel, Green, Issa, Inc., a crisis management firm specializing in turnaround strategy and consulting. From April 1995 to October 1997, he served as Executive Vice President and Chief Financial Officer for The Johnny Rockets Group, Inc., a corporate and franchise restaurant chain. From 1991 to 1995, Mr. Fenstermacher served as Chief Executive Officer and Chief Financial Officer for On the Border Cafes, Inc. He was instrumental in the merger of On the Border Cafes, Inc. with Brinker International, Inc. (NYSE symbol EAT). Mr. Fenstermacher received a B.A. degree in Government with a minor in Life Sciences from the University of Notre Dame, in Notre Dame, Indiana, and received an M.B.A. degree in Finance and Accounting from the University of Pittsburgh, in Pittsburgh, Pennsylvania.
Few have the opportunity to work not only with a successful business, but at the same time bring positive, life-changing products to new consumers. Mannatech is the company that gives us that opportunity.
Randy Bancino
President of Global Business Operations and Expansion
Mr. Bancino began working with Mannatech two years ago directing business operations for the company across international markets, as well as North America. He brings more than 25 years of sales, marketing and business experience having worked as an executive with the top direct selling companies in the world. Mr. Bancino works with the general managers of Mannatech’s international and domestic subsidiaries while driving the company’s future expansion efforts.
Throughout his 20 years experience in the Direct Selling Industry, Mr. Bancino has served in senior leaderships roles including Vice President of Sales & Marketing for Amway and Chief Information Officer for Amway’s parent company Alticor. In addition to his diverse corporate executive experience, Mr. Bancino has taught strategy at the graduate school level and founded a successful consulting and training firm that served companies ranging in size from Fortune 500 to internet start-ups. Mr. Bancino has a B.S. in Computer Science from Grand Valley State University and an M.B.A. from Western Michigan University.
“The opportunity to serve in a meaningful role in a company that positively impacts people’s physical and financial wellness is a real honor. I am proud to be part of a global team of corporate and field people who are on a mission to change people’s lives.”
B. Keith Clark
Executive Vice President, General Counsel & Secretary
B. Keith Clark joined Mannatech in August 2006 to serve as our Senior Vice President, General Counsel, and Corporate Secretary. Mr. Clark heads the Legal, Ethics, and Compliance Department and is responsible for a wide variety of legal issues and business unit support. Among those responsibilities is ensuring that Mannatech’s activities are conducted in accordance with all applicable laws, regulations, and procedures. The Compliance department is responsible for creating and enforcing policies and procedures for its independent Associates. Prior to joining Mannatech, Mr. Clark served as Senior Vice President and General Counsel from 2004 until August 2006 for Metromedia Restaurant Group, a subsidiary of Metromedia Company, which is one of the largest privately-held companies in the United States with holdings in the hospitality, energy, and telecommunications industries. From 1997 to 2004, Mr. Clark was employed by Pizza Inn, Inc., a publicly-traded international restaurant franchising company (NASDAQ symbol PZZI), and from 2002 to 2004, served as Pizza Inn, Inc.’s Senior Vice President-Corporate Development, General Counsel and Secretary. Mr. Clark received a B.S. degree with honors in Political Science from Texas Christian University in Fort Worth, Texas and received an M.B.A. and his Juris Doctor from the University of Texas at Austin, in Austin, Texas. In addition, Mr. Clark is a member of State Bar of Texas and also serves on the board of directors of several non-profit organizations.
New product developments combined with the passion and commitment of the entire Mannatech family, make this an exciting time for the company and its Associates. I am pleased to be here to support these efforts.”
Claire Zevalkink
Senior Vice President, Chief Global Marketing Officer
Claire Zevalkink joined Mannatech in January 2009 as a consultant in the role of acting Vice President of Field Development and Training, and she was brought on board as Senior Vice President, Chief Global Marketing Officer on September 2, 2009. Ms. Zevalkink brings 27 years of experience in multi-level marketing and has held positions of increasing responsibility and rank including leading marketing divisions through various stages of growth and profitability, developing and directing marketing strategies, managing a growing international marketing team, and creating and implementing a multi-million dollar brand growth plan. Most recently, as managing partner for Profitable Growth Partners, LLC June 2006 to January 2009, Ms. Zevalkink developed marketing and brand strategies for a number of growing multi-level marketing companies and created leadership training programs for client management teams. Ms. Zevalkink has an M.B.A. and Bachelor’s degree in Marketing from the University of Vermont.
I am continually impressed by Mannatech’s approach to business and our focus on producing high-quality products based on nutritional science. These assets coupled with the passion that our Associates have for our business and products is unmatched, and I am excited to be a part of it.”
Alfredo (Al) Bala
Senior Vice President, Global Business Development
Alfredo (Al) Bala is Mannatech’s Senior Vice President, Global Business Development effective October 1, 2007. Al has served as COO Britt Worldwide, LLC, one of the largest independent Amway networking marketing organizations from 1992 to 2006. While with Britt Worldwide, he led the company’s sales and marketing campaigns, training, motivational seminars, development of business support materials, and technology tools. Al also was heavily involved in the launch and re-launch of over 40 international markets that propelled international sales volume to more than $500 million. Al served as manufacturing plant manager for Bose Corporation from 1983 to 1992. He is conversant and/or fluent in more than 13 languages.
In addition to more than 20 years of domestic and international experience in network marketing, Al’s proven record includes growing a major direct sales organization to $750 million, reaching more than one million people in 60 countries.
After 27 years in the direct sales industry in North America and over 60 countries around the world, it is incredibly refreshing and a real privilege to be part of a company and a family of Associates who really hold true to a mission of bringing the gift of wellness to the world with a heart and a strong sense of mission.
