Michael Costello – GNC | Global Fitness 100™ 2025
Recognized as one of the top 100 leaders shaping the fitness industry.
Transforming Global Wellness Retail Leadership
Michael Costello is Chief Executive Officer of GNC, the world’s largest specialty retailer of nutritional products, with more than 4,000 U.S. locations and over 2,000 international operations. Since his appointment in 2023, he has been steering GNC’s legacy of innovation, trusted science, and retail scale into a new era of growth. Under his leadership, the company advances an omnichannel strategy combining retail, wholesale partnerships, and digital commerce to reach millions of consumers worldwide.
With more than three decades of experience in the consumer packaged goods industry, Costello previously spent 24 years at The Clorox Company, where he held senior roles including SVP and GM of Nutranext and Renew Life. He also advises emerging brands through Wild Cow Brands and Fabalish, bringing big-brand discipline to entrepreneurial ventures. By blending Fortune 500 expertise with category-defining wellness leadership, Costello secures his place among the Global Fitness 100™ 2025, shaping the future of global health retail.
