The story
Founded by William Henne and Xavier Löwenthal.1
La Cinquième Couche was founded in 1993 by a group of students from the comics workshop of the Institut Saint-Luc in Brussels, among them Damien Rocour, Sarah Masson, Michel Squarci, Sibylle Loof, Olivier Fable, Vincent Dutreuil, Nicholas Wood, Sébastien Kempenaers, Christophe Poot, Renaud De Heyn, and Xavier Löwenthal. The group initially published a fanzine under the same name; for its first years it remained an informal collective that self-published its members' work. Around the turn of the millennium, it restructured as a proper publishing house.
The name is a wry allusion to the art historian Clement Greenberg's four-stage model of modernism — La Cinquième Couche positions itself as a hypothetical fifth layer beyond that canon.
William Henne, who had published independently since 1994, joined the collective in 1998. By the 2010s, he and Löwenthal had become its co-directors. As of 2016, the catalogue counted over 110 publications (five issued between 1993 and 1998, the remainder from 1999 onward), with authors from Belgium, France, Switzerland, Germany, Austria, Portugal, Greece, Finland, the United States, and South Korea.
Between 2004 and 2007, 5c incorporated the contemporary literature journal Écritures into its catalogue. From 2010 to 2013, it also published the journal Soldes, Fins de Séries by Marc Borgers and Jean-Louis Sbille.
From Wikipedia’s article on La Cinquième Couche, shared under CC BY-SA 4.0.4