Executive Leadership
Top Talent at the Executive Level
The future rests confidently on the shoulders of an esteemed group of high-ranking business leaders with unmatched experience and record-breaking success. Our executive team has bravely taken the company from flagship hopeful to worldwide leader. And they continue to set the stage for the next breakthrough achievement in wellness.
Robert A. Sinnott, MNS, PhD • CEO and Chief Science Officer
Dr. Robert A. Sinnott , Chief Executive Officer and Chief Science Officer, joined Mannatech in 2005 as CSO, and added the responsibilities of Co-CEO in 2009. As of January 2012, he has been named sole CEO.
During his tenure, 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 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 CEO, Dr. Sinnott works 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.
From 2006 – 2011, Dr. Sinnott held a seat on CRN’s Board of Directors, and from 2009–2011, Dr. Sinnott also served 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 earned his B.S. degree in Biological Sciences, a Masters in Natural Science, and a Ph.D. in Plant Sciences from Arizona State University, in Tempe, Arizona. His doctoral dissertation focused on agricultural biotechnology of industrial plants, including aloe vera.
“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.”
Alfredo (Al) Bala • Executive Vice President, Sales & Marketing
Alfredo (Al) Bala joined Mannatech in October 2007 to serve as our Senior Vice President, Global Sales. Al was named Executive Vice President, Sales in June 2011. Al served as Chief Operating Officer of Britt Worldwide, LLC, one of the largest independent Amway network 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."
B. Keith Clark • Chief Operating Officer and Chief Legal Officer
As of January 2012, B. Keith Clark was named Chief Operating Officer, in addition to his role as Chief Legal Officer. Mr. Clark joined Mannatech in August 2006 to serve as our Senior Vice President and General Counsel. He then went on to hold the position of Executive Vice President and Chief Legal Officer. In addition to heading up the Legal, Ethics, and Compliance department, Mr. Clark is now responsible for the daily operation of the company.
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, 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 served as Senior Vice President, General Counsel and Secretary for Pizza Inn, Inc., a publicly traded international restaurant franchising company.
Mr. Clark earned 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 addition, he is a member of the State Bar of Texas and also serves on the board of directors for several nonprofit 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."
Natalie Clark • Senior Vice President, North American Sales and Operations
Mrs. Clark joined Mannatech in 1995 and has more than 15 years' experience in the direct selling industry. She has proven management and leadership skills in strategic and tactical planning as well as the development and implementation of global operational efficiencies. Mrs. Clark has contributed to all facets of the organization by managing a joint executive team to develop long-term strategic plans, leading project management efforts to re-design a seamless global compensation plan, initiating the Associate Advisory Council and designing recognition and incentive programs to award field leadership. In addition, she has acted as interim CIO, managed the global compensation plan coordination and logistics for international expansion efforts, established the compliance department to enforce global policies and procedures and continues to effectively manage both promotional and educational compliant messaging programs. She contributed to the development and implementation of a $35 million global IT project to overhaul an outdated computer system that integrated global accounting/tax, distribution, call center/sales order, commissions and supply chain.
As Mrs. Clark provides strong strategic leadership to advance the growth of the company and effectively manage the seamless downline organization of Mannatech’s independent sales Associates, the Career and Compensation Plan, the North American Associate Advisory Council, the Team MannatechSM program and all North American sales initiatives, she remains focused on improvement initiatives that bring operational efficiencies.
In a senior executive position, Mrs. Clark will continue to provide strong strategic leadership to advance the growth of the company and effectively manage the seamless downline organization of Mannatech’s independent sales Associates, the career and compensation plan, the North American Associate Advisory Council, the Team MannatechSM program and all North American sales initiatives; she will remain focused on improvement initiatives that bring operational efficiencies.
“It is an honor to work for a caring company with an established culture of serving others. After 15 years with Mannatech, I’m thrilled to be a part of the senior management team and to partner with our field Associates in bringing Real Food Technology solutions to millions of people around the world.”
Ron Norman • Senior Vice President International
Ron Norman joined Mannatech in May 1996 and was named Senior Vice President, International in June 2011. Prior to his current position, he served for several years as Mannatech’s Vice President of International Operations. He served as the Company’s Treasurer for over 6 years, and held various other positions within the company’s finance department before his appointment as Treasurer. Prior to joining Mannatech, Ron had 15 years of experience in public accounting, focusing on providing tax, accounting, finance and general business consulting services to Entrepreneurial and Growth Stage companies with an emphasis on preparing these companies for entry into the public markets or preparing them for international expansion.
Ron received both his B.S. and M.S. degrees from Baylor University. He is a CPA licensed in the State of Texas and is a member of the American Institute of Certified Public Accounts and Dallas Chapter of the Texas Society of Certified Public Accountants. Ron donates his time and expertise to various autism advocacy groups in the North Texas area including the DFW Center of Autism and the North Texas Chapter of the Autism Society of America. He and his family are volunteers for events sponsored by the Special Olympics.
“It is truly an honor and a privilege to be able to assist our Associates in spreading the Mannatech dream beyond the U.S. A dream built upon our world class product offering based upon Real Food Technology® and our unparalleled Associate compensation plan.”


