Born in 1960. One of the first contemporary art dealers in the USSR — in 1990 opened one of the first private galleries of contemporary art. He arranged personal exhibitions of Andy Warhol (Alter Ego, 1994) and Joseph Beuys (“Leonardo's Diary”, 1994), supervised numerous exhibition projects in the Manezh, the Russian Museum and the Tretyakov Gallery. In 1995, together with Gleb Pavlovsky, he created the “Foundation for Effective Politics”.

In 2008, Guelman ran the exhibition Russian Povera in Perm. The exhibition included the works of the most prominent Russian artists of today. It was held on the premises of Perm River Terminal. Following the success of the exhibition, the Perm River Terminal was transformed into Perm Museum of Contemporary Art (PERMM). Guelman also initiated the art festival Perm White Nights. In 2013, Guelman was dismissed at director of PERMM, following another politically-critical exhibition at the museum.

In 2014 emigrated to Montenegro.