An unknown buyer acquired 7.9% stake in Oylum Sinai Yatirimlar Anonim Sirketi (IBSE:OYLUM) from Nesibe Buyuknalbant on July 16, 2018. An unknown buyer completed the acquisition of 7.9% stake in Oylum Sinai Yatirimlar Anonim Sirketi (IBSE:OYLUM) from Nesibe Buyuknalbant on July 16, 2018.