Works were created by the artist when he was sleeping on a friend’s couch in Manhattan

Belinda Neumann-Donnelly claims the work could have made an extra $15m if Hubert Neumann had not tried to block its sale

Rapper P. Diddy identified as buyer of the Chicago-based painter's Past Times

The painting, estimated to bring $30m, is a key lot in the auction house's upcoming evening sale in New York; plaintiff vows to appeal

Critic and curators gather to pay tribute to late artist as 1984 painting comes to market for first time

Japanese collector was catapulted into the limelight when he spent $110m on a Basquiat, which is currently on 'world tour'

Two major shows had been planned but only Centro Cultural Banco do Brasil's is taking place after Masp cancelled

More than 7,000 visitors attended over the closing weekend in London, with overall figures expected to reach more than 215,000

Kenneth Baker on the US artist's survey at the Barbican, which travels to Germany next month

Japanese billionaire has sent his prized 1982 skull painting on “world tour” after buying work at Sotheby’s last year

We survey the top five results in key markets, from Old Masters to Post-war and contemporary

Spring show at Bernard Arnault’s Paris institution includes unseen collection works by artists such as Murakami and Matisse

The Art Newspaper team assesses the art world's fortunes in a turbulent year

Documentary about artist’s life screens at Art Basel in Miami Beach

Yusaku Maezawa broke the news on Instagram, saying he hopes the work will be “loved by people all over the world”

Artist’s many influences explored in scholarly exhibition comprising more than 100 pieces at the Barbican

A year after his death, MoMA turned down an offer of the artist’s work. Today, the appetite for his paintings has never been greater

Show at London's Barbican is first major survey on the artist since 1996