Onbegrensd - Unbegrenzt, curated by H. Hachmeister, Roger Raveelmuseum, Machelen, Belgium
Chine - Occident ou l'aventure du signe. Michaux, Tobey, Degottex, Zao Wou-Ki, Shan Sa, Galerie Berthet-Aittouarès, Paris, France
2004/05
An American Odyssey, 1954-1980 - Debating Modernism, QCC Art Gallery, The City University of New York
Shanghai Modern, Museum Villa Stuck, Munich, Germany
Arti e Architettura: 1900-2000, Palazzo Ducale, Genua, Italy
2005
Shanghai Modern, Kunsthalle Kiel, Kiel Germany
50 Yeatrs documenta 1955-2005, Kunsthalle Fridericianum, Kassel, Germany
Scriptorale und Gestische Kunst im 20. Jahrhundert, Kunstsammlungen Chemnitz, Germany
Peintures et Sculptures, Galerie Alice Pauli, Lausanne Switzerland
Little Treasures from the Permanent Collection, Polk Museum of Art, Lakeland FL
2006
Plane / Figure, Amerikanische Kunst aus Schweizer Sammlungen, Kunstmuseum Winterthur, Switzerland
Verrückte Liebe - Von Dali bis Bacon, BA-CA Kunstforum, Vienna, Austria
Inner Worlds Outside, Whitechapel Art Gallery, London, Great Britain
Collection 1, National Museum of Art Osaka, Osaka Japan
2006/07
La tentation de l'Orient, Galerie Jeanne-Bucher, Paris, France
Informel – eine Weltsprache, Galerie Schlichtenmaier, Grafenau, Germany
2007
William C.Seitz: Defending the Modern, The Museum of Modern Art, New York
Mark Tobey–Julius Bissier, Galerie Carzaniga, Basel, Switzerland
Contemporary, Cool and Collected, Mint Museum of Art, Charlotte, NC
Le Corps et son Double, Galerie Jeanne Bucher, Paris FranceThe Passionate Gesture, Hackett Freedman Gallery, San Francisco
Jan Bouman Collection, Groninger Museum, Groningen Netherlands