Michael Nuzzo

After years of stability in the executive suite, GNC Holdings has sent longtime leader Joe Fortunato packing and installed an outsider — senior retail industry executive Michael Archbold, 53 — as CEO, effective immediately. Lead independent director Michael Hines has been elected nonexecutive chairman of the GNC board. Archbold comes to GNC from women's apparel retailer Talbots, but before that he held executive positions, including president and COO for GNC competitor Vitamin Shoppe. Tuesday's surprise announcement comes only weeks after GNC's longtime CFO Michael Nuzzo left the company to become chief administrative officer and executive vice president at 4Moms.