Insomniac is the fourth studio album by the American punk rock band Green Day. It was released on October 10, 1995 through Reprise Records. Though it peaked at number two in the United States and went double-platinum (according to the RIAA) by 1996, Insomniac did not have the sales endurance of its predecessor, Dookie, largely due to its slightly darker lyrical tone and heavier, more abrasive sound. Insomniac has sold 2,100,000 copies in the US alone, according to Billboard in 2012. The album was reissued on vinyl on May 12, 2009.