Kostas was Helmut Lang's 1st assistant in the early nineties, launching his own mens and womenswear line straight after he resigned from this position as well as a second collection, called 'Haltbar Murkudis' in association with product designer Kathleen Waibel. Renzo Rosso appointed him as creative director of New York Industries where he used to design until 2003 as far as I understand. While taking on this duty, he stopped showing his own line in Paris.
After New York Industries, he moved his atelier from Munich to Berlin where he is again designing his signature collection, as well as collaborative projects with Schiesser (a traditional german underwear brand) and Johnstons Cashmere in Scotland (who also produce Christopher Kane's knitwear). His suiting is being made entirely by hand at one of Germany's most traditional and prestigious menswear manufacturers, Regent.
The designer that is now doing Clemens En August had formerly been an assistant to Kostas Murkudis, probably in his Munich days.