Which Green Day album is described as their fourth studio album?

Insomniac is Green Day’s fourth studio album.

Released on October 10, 1995, by Reprise Records, Insomniac followed Dookie, the band’s breakthrough third studio album. Its position in Green Day’s studio-album chronology makes it the fourth, while Warning and Nimrod came later. Dookie is the tempting wrong answer because it was the band’s major commercial breakthrough, but it is actually album number three.

The record was written and recorded after Dookie’s enormous success, when Green Day faced accusations of having abandoned its underground punk roots. Much of the material was developed in a house in East Oakland, and the sessions took place at Hyde Street in San Francisco. The band and producer Rob Cavallo pursued a tight, forceful sound built around high-energy performances.

Insomniac was darker and more abrasive than Dookie, with songs addressing alienation, anxiety, boredom, and drug use. It reached number two on the Billboard 200 and was certified double platinum in the United States. Its singles included “Geek Stink Breath,” “Stuck with Me,” “Brain Stew/Jaded,” and “Walking Contradiction.”