He inherited both of his father's marches on the death of his brother Poppo II in 1098, but was divested of Istria sometime between 1101 and 1107, when it went to Engelbert II of Sponheim, whose father had preceded Ulric's brother in the march.
Ulric gained possession of both of his father's military operations upon the death of his brother Poppo II in 1098, but lost control of Istria between 1101 and 1107, when it was transferred to Engelbert II of Sponheim, whose father had preceded Ulric's brother in commanding the march.