PAR Technology (NYSE: PAR) CEO Paul Domorski has resigned, effective immediately. He also stepped down from his posts as president and as chairman of the company's board. In the press release announcing the move, PAR Technology didn't provide a reason for his departure.

His place will be taken by the company's current CFO, Ronald Casciano, who will also serve on the board of directors. Casciano has been CFO since 1995 and has been employed at the company since 1983. Meanwhile, Sangwoo Ahn will take the post of board chairman. Ahn had previously been PAR Technology's leading independent director.