Arnold's debut feature Red Road, an intense drama starring newcomer Kate Dickie, is the first of three films to be made through Lars von Trier's Advanced Party scheme in which directors work with a set of characters created by Lone Scherfig and Anders Thomas Jensen.
The deal was brokered by Jane Giles and Marie Therese Guirgis for Tartan USA and Natja Rosner, sales executive for Trust Film Sales.
Giles says: "This is an extraordinary film and we're delighted to be working with this talented director. We look forward to seeing the next films to emerge from the Advanced Party Scheme."
Rosner adds: "After a productive week and hard negotiations Red Road has found its way to the US. We are thrilled to be working with Tartan on this project and to secure them as part of the Trust family."
Other all rights Cannes market acquisitions for Tartan USA to be released theatrically are: the Danish Director's Fortnight opener Princess, from director Anders Morgenthaler, also acquired from Trust Film Sales, and Denis Dercourt's Un Certain Regard entry The Page Turner, a French psychological thriller acquired from Films Distribution.