Pentair plc (PNR) is a multinational diversified industrial company incorporated in Ireland with tax residency in UK, with its main U.S. office located in Minneapolis, Minnesota. Pentair was founded in the US, where roughly half of the companys revenue is derived as of 2015. However, PNR was reorganized in 2014, shifting the corporate domicile from Switzerland to Ireland. Until a major restructuring in 2004, the company was primarily an industrial tool manufacturer. Now, the companys primary focus is water and fluid controls used in the energy, food & beverage and manufacturing industries as well as infrastructure. With fiscal year 2015 revenues of US$6.43 billion, Pentair employs more than 30,000 people worldwide. Pentair was founded in August 1966 as Pentair Industries, Inc., with the name derived from the Greek root word "penta-" (alluding to the companys five founders), and went public several months later.