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.
Upon Kaykhusraw's passing and the ensuing power struggle among his sons for the throne, the Parwana supported Kilij Arslan IV and managed to have him recognized as the rightful heir. At the same time, he also captured Sinop and twelve surrounding strongholds from the Empire of Trebizond, granting the region to himself and his family as a concession.