Japan Display Inc., a supplier to Apple Inc., said Wednesday its CEO will quit in September to take responsibility for years of net losses as it unveiled additional restructuring measures and raised the number of domestic job cuts to 1,200.

The latest reduction, up from 1,000 announced in May, represents over a quarter of the display maker's total workforce in Japan.

CEO and President Yoshiyuki Tsukizaki will step down, effective Sept. 30, to be replaced by Managing Executive Officer and Chief Financial Officer Minoru Kikuoka.