Gerhardsen Gerner was founded by Atle Gerhardsen in Oslo in 1995, under the name c/o. For the first time Atle Gerhardsen showed works by artists such as Tony Oursler, Matthew Ritchie and Carroll Dunham in Oslo. After moving to Berlin in 2000, Atle Gerhardsen opened the space in the railway arches near the Berlin Jannowitzbrücke station, a former Berlin gallery hotspot, in 2001. After serving as exhibition spaces for the 2nd Berlin Biennale in 2001, some of the most renowned galleries, such as carlierIgebauer, Max Hetzler, Mehdi Chouakri or the non profit space Büro Friedrich, had been moving in the railway arches.
In early 2009, the gallery was renamed Gerhardsen Gerner in order to include the name of Atle Gerhardsen's business partner of many years, Nicolai Gerner-Mathisen. In May 2012 Atle Gerhardsen and Nicolai Gerner-Mathisen opened their new premises in Oslo in the district Tjuvholmen. In Oslo the gallery has shown exhibitions with artists such as Tal R, Julian Opie, Georg Herold, Olafur Eliasson, the group exhibition DO NOT DISTURB with the Scandinavian artist duo Elmgreen & Dragset, Per Inge Bjørlo, Nathalie Djurberg & Hans Berg, Magnus Plessen, Andreas Slominski, Paloma Varga Weisz, Jonathan Meese or Monica Bonvicini.