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With a doctor`s degree in art history, Ahlgrimm-Siess is an autodidact painter and after professional stations at the Benedictine Abbey of Admont and the Campus Sacré Coeur Graz she has been responsible for the area of communication at the Association of Religious Schools of Austria in Vienna since 2017.

The love for painting developed already in her school years through encouragement of her teacher and Viennese painter Erika Wolf-Rubenzer. After working in watercolor during her studies, Ahlgrimm-Siess has been painting in acrylic on canvas since 1997, predominantly abstract and large-scale. Using brush and palette knife, she has found over the years a style of painting in layers that provides a depth in her paintings. "For me, painting means inner freedom. The most beautiful thing about the painting process is, that I forget time and space, am completely caught up in the creative act. Painting for me is a form of the highest concentration and intuition." 
Since 1999, Ahlgrimm-Siess has taken on commissioned work for private individuals and for companies. 

During the first lockdown of the 2020 corona pandemic, the painter started working on cross-disciplinary art projects as a team with representatives from the fields of music and literature.  "The sudden standstill during the first lockdown opened up new spaces for artistic engagement with the uncertain, with fears, but also with hope, confidence and thoughts about opportunities. It was during this time that work was starting to be put in the first art project."


  • July 4th – August 19th, 2021: Exhibition “Heiteres Herbarium” after Karl Heinrich Waggerl in St. Gilgen am Wolfgangsee.
    Matinée and vernissage on July 4th together with soprano Renée Schüttengruber, historian Theres Arnbom and pianist Robert Lehrbaumer.


  • "Sestra Srca" - poetry and painting - poetry book by Jelena Sutlović with paintings by Regina Ahlgrimm-Siess.

  • June 1 – July 13, 2022: Exhibition “Heiteres Herbarium after Karl Heinrich Waggerl in the gallery “Kunst im Gang”, Pfarre Rossau, 1090 Vienna.
    June 26, 2022: Matinée, book presentation "Beauty Plants" written by Renée Schüttengruber and exhibition infos by Ahlgrimm-Siess

    • Songs from the "Heiteres Herbarium"

    •  Tour of the exhibition


  • "Nijanse" - poetry and painting - poetry book by Jelena Sutlović with paintings by Regina Ahlgrimm-Siess.

  • July 15 - August 19th, 2023: Artist Group Exhibition “Brodi i Kvadri“, Zadar, Dalmatien



23. Juni - 31. Oktober 2024: "Querfeldein" in der Galerie des Wachaumuseums.

Unter dem Titel "Querfeldein" präsentiert Regina Ahlgrimm-Siess zusammen mit dem Wachaumaler Erich Giese abstrakte und gegenständliche Natursujets in der Galerie des Wachaumuseums in Weissenkirchen.

Vernissage & Matinee: 23.06.2024. Die Wiener Volksopernsängerin und Buchautorin Reneé Schüttengruber singt passsend zum Thema der Ausstellung Lieder aus dem Zyklus "Das heitere Herbarium" nach Karl Heinrich Waggerl, vertont vom Komponisten Franz Salmhofer.

Herbarium 3.JPG
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