Kostja Ullmann, born May 30, 1984, in Hamburg, is a German actor, best known for his leading role in the award-winning coming of age drama "Sommersturm" which gained a lot of praise throughout Europe.
Ullmann entered the stage at the age of eleven and performed at Hamburg's Ernst-Deutsch-Theater and Winterhuder Fährhaus. In 1998, he made his TV debut in a minor part in the crime series "Alphateam".
In the following years, Ullmann starred in several minor roles in TV series such as "Stahlnetz", "Großstadtrevier", and "SOKO Leipzig" as well as in TV movies such as the drama "Albtraum einer Ehe" alongside August Zirner. From 1999 to 2000, he was a cast member of the comedy series "Zwei Männer am Herd" with Wolfgang Fierek and Florian Fitz.
In 2004, Kostja Ullmann made his movie debut in a leading role in Marco Kreuzpaintner's award-winning film "Sommersturm". His performance in the romantic TV drama "Heimliche Liebe" about the relationship of a schoolboy and an older woman won Ullmann the "Günther-Strack-Fernsehpreis" as "Best actor" in 2006.
In his second movie, "Verfolgt", Ullmann stars in a similar role. Directed by Angelina Maccarone, he plays a young delinquent who engages in an "amour fou" with his probation officer who is more than 30 years older than he is. The film won a "Golden Leopard" at the 2006 Locarno International Film Festival. He acted as Hermann Lake in German-Japan collaborated movie Baruto no Gakuen in 2006.