After Kaykhusraw’s death and the ensuing dispute among his sons for the throne, the Parwana supported Kilij Arslan IV and succeeded in having him declared as the successor. In the same period, he also took Sinop and twelve surrounding castles from the Empire of Trebizond and the region was accorded to him and his family as an iqta.
Following Kaykhusraw's demise and the subsequent struggle among his sons for the throne, the Parwana backed Kilij Arslan IV and succeeded in having him proclaimed as the rightful ruler. Concurrently, he also seized Sinop and twelve surrounding fortresses from the Empire of Trebizond, awarding the region to himself and his family as an iqta.