Singapore's prosecutors have charged five executives of China Aviation Oil (Singapore) Corp, including its embattled CEO Chen Jiulin, with forgery, insider trading and issuing false financial statements in connection with a derivatives-trading scandal that cost the company more than US$500m, nearly bankrupting it. Others charged include Jia Changbin, CAO Singapore's chairman and the president of its Beijing-based parent, China Aviation Oil Holding Co, finance head Peter Lim and the company's directors Li Yongji and Gu Yanfei.