News GNC parent company files for bankruptcy protection, plans to permanently close up to 1,200 stores June 24, 2020June 24, 2020 Kelly Tyko, USA TODAY Comments Off on GNC parent company files for bankruptcy protection, plans to permanently close up to 1,200 stores GNC Holdings Inc., parent company of health and wellness retailer GNC, said it plans to close up "at least 800 to 1,200 stores."