Number 5, 1948 is a painting by Jackson Pollock, an American painter known for his contributions to the abstract expressionist movement. The painting was done on an 8' x 4' sheet of fiberboard, with thick amounts of brown and yellow paint drizzled on top of it, forming a nest-like appearance. It was originally owned by Samuel Irving Newhouse, Jr. and displayed at the Museum of Modern Art before being sold to David Geffen and then allegedly to David Martinez in 2006 (though the supposed sale of this painting to Martinez has been denied by his attorneys).