Autoneum is an internationally active Swiss automotive supplier headquartered in Winterthur, Switzerland. Autoneum is one of the leading manufacturers in vehicle acoustic and thermal insulation for vehicles and supplies the majority of global automobile manufacturers. Autoneum was founded in 2011 as a spin-off of Rieter Holding AG. As of December 31, 2025, Autoneum operates more than 70 production facilities and employs 16,400 people worldwide. Autoneum Holding AG is listed on the SIX Swiss Exchange. Wikipedia