Perrigo

Perrigo maintains its corporate headquarters in Grand Rapids, Michigan, within Michigan State University's Grand Rapids Innovation Park. Perrigo engages in the acquisition (for repricing), manufacture, and sale of consumer healthcare products, generic prescription drugs, and active pharmaceutical ingredients (APIs), primarily in the United States, from its base in Ireland. On 21 December 2018, Perrigo suffered its biggest one-day share price fall in its history after the Irish Revenue Commissioners issued a tax claim against Perrigo that equated to half of its market value. L. Perrigo Company was founded in 1887 in Allegan, Michigan, by Luther and Charles Perrigo, who ran a general store. In 1991 Perrigo had an initial public offering on Nasdaq. In March 2005 the firm acquired Agis Industries Limited (traded as AGIS at the Tel Aviv Stock Exchange), an Israel-based generic pharmaceuticals company in an $850 million transaction. Agis was founded in 1983 by Mori Arkin, who developed his father's small drug import business into a multinational generic pharmaceutical company. As a result of the acquisition, Arkin owned 9% of Perrigo, and was appointed as Vice Chairman of the company.