Omer Halit Celep acquired 10% stake in Arti Yatirim Holding A.S. (IBSE:ARTI) from Sevgi Celep on August 27, 2018. Omer Halit Celep completed the acquisition of 10% stake in Arti Yatirim Holding A.S. (IBSE:ARTI) from Sevgi Celep on August 27, 2018.