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About Us | Management Team | Clients - DSXgroup, LLC

  • Sebastian J. Leonardi, MANAGING PARTNER | President & Chief Business Strategist
    Mr. Leonardi is an accomplished senior executive and business strategist with 25 years of broad-based leadership in technology, consulting, and healthcare sectors. He has significant experience steering vision, innovation and leading accelerated growth initiatives for organizations focused on capturing triple-digit revenue, market share and profit from domestic and international markets.
    Sebastian is a leading consultant and trusted advisor to executive management teams and recognized expert on innovative channel strategy, social commerce, business & technology alignment and conversion-focused programs. He has an outstanding record of creating accelerated growth and has implemented innovative solutions for startups, private equity owned companies and multibillion dollar global conglomerates in North America and Europe.
  • Kathy J. Odell, PARTNER | Executive Consultant & CXO
    Ms. Odell is a serial entrepreneur with over 30 years of leadership experience in high growth enterprises.  
    Her career focus has been in health and wellness, having founded and led companies in the medical device, fitness and nutrition arenas. Prior to DSXgroup, she served as Managing Director of NutraHealth Partners and President of Annovium Products LLC, a fitness equipment company that manufactured and marketed the CoreFitnessRoller, a unique portable fitness device. The product was licensed to Nautilus, Inc. for the global home use market under the name CoreBody Reformer and to Balanced Body, Inc. in the global commercial fitness market.


    From 2002-2008, Kathy served as founding CEO of Inogen, Inc. (NASDAQ:INGN), a market leader in the development and manufacture of advanced oxygen therapy devices for the treatment of Chronic Obstructive Pulmonary Disease (COPD). Kathy raised over $53MM from top tier venture capitalists to fund the growth of the company. Kathy was also co-founder of Medical Concepts, Inc., which over a five-year period became the world’s leading designer and manufacturer of video systems for minimally invasive surgery, resulting in its acquisition by Karl Storz Endoscopy GmbH. Following the acquisition, Kathy served the Storz Group as the Managing Director of Karl Storz Imaging.
  • Dr. Steven Witherly, Ph.D., PARTNER | Chief Science Officer

    Dr. Witherly is a nationally recognized expert in human nutrition and food science with more than 30 years’ of experience creating food and beverages, including “household name” products such as Slim Fast, Coffee-mate and Instant Breakfast


    He is a sought after lecturer, having given over 150 presentations to industry and consumer groups on nutraceuticals, herbal and botanical ingredients and sensory perception. He has been a National Institute of Food Technologists Lecturer and is the author of “Why Humans Like Junk Food”, (iUniverse 2007). He is well known for his theory called “The Doritos Effect: What Makes Snack Food Taste Good” and appeared on the National Geographic special “EAT: The Story of Food (October 2014).

     Executive Team


  • Peter Leighton, PARTNER | CMO & Product Strategist
    Mr. Leighton has over 30 years’ experience in consumer products, nutraceuticals and biotechnology. He has been responsible for some of the most successful consumer nutrition brands on the market and is a recognized authority in functional foods and science-based nutraceuticals. Consequently, Peter provides top-tier management and strategic solutions to growth-oriented companies within the health & wellness category, including: nutritional supplements, functional foods and beverage, biotechnology and pharmaceutical industries.
  • Alan Feldstein, Esq., PARTNER | Legal, Regulatory Affairs Counsel & Operations
    Mr. Feldstein, has over thirty years’ experience in the area of advertising and marketing law, with most of those years devoted specifically to the health and dietary supplements industry. In addition to serving as attorney to many top names in sports nutrition, Alan has served as a professor of law on the Adjunct Faculty staff at Southwestern University School of Law teaching advertising and marketing law.
    Alan’s depth and breadth of knowledge of the dietary supplement industry and its laws and regulations is combined with executive business acumen. His career in the dietary supplement industry began in 1997 as in-house General Counsel for a dietary supplement company. As part of the management team, he helped take the company to over $150MM in annual sales.
  • Kristina M. Eriksen, PARTNER | CFO, COO & Business Analyst
    Ms. Eriksen has over 30 years’ experience as a corporate financial management professional in technology and consumer packaged goods in organizations with a product focus in wellness and healthy lifestyles.
    During her career she has worked with companies across all corporate life stages from entrepreneurial launch to corporate renewal, with notable success in guiding high potential organizations through organizational development, rapid growth, debt and equity financings, private equity transactions, IPO and M&A.
  • Caroline Yeh Witherly, PARTNER | COO, Supply Chain & International

    Caroline Yeh Witherly has extensive experience in Food Science and Nutrition in product development and manufacturing, is a flavoring expert, and has strong expertise in sensory evaluation.

    Her career began in research with Lawry’s Food and Nutrilite and quickly moved into operational areas of food and beverage. She was responsible for pilot scale-ups and commercial production at Nutrilite and Knots Berry Farm Foods-Hunt Wesson/ConAgra.