Masato Ozasa, who had served as the head of Toa Kinema Tojiin Studio after Makino left the company in 1925, resigned in March 1929 when Yachiyo Insurance, the parent company from which he had been dispatched, withdrew from the film business.
1925年（大正14年）の牧野の独立以来、牧野に代わって東亜キネマ等持院撮影所長をつとめた小笹正人が、同社の親会社であり小笹の出身会社である八千代生命の撤退を期に、1929年（昭和4年）3月に同社を退社した。