Steris plc is an American-Irish-based medical equipment company specializing in sterilization and surgical products for the US healthcare system. Steris is operationally headquartered in Mentor, Ohio, but has been legally registered since 2018 in Dublin, Ireland for tax purposes; it was previously registered in the United Kingdom from 2014 to 2018. Steris is quoted on the NYSE, and is a constituent of the S&P 500 Index. Wikipedia