This is the official website of the Otto Piene Catalogue Raisonné, an ongoing project aiming to document the artist’s entire oeuvre.

The catalogue raisonné is undertaken by the Otto Piene estate under the direction of Sprüth Magers with initial sponsoring from More Sky. The project is headed by Julia Schleicher.

If you own or have owned an artwork by Otto Piene, please fill out and submit the collector’s form on this site, thus providing an essential contribution to the provenance research into his work.

Confidentiality and requests for anonymity will be strictly honored.