$美国铝业(AA)$ 8-K - Current report Filed: 2017-05-22 AccNo: 0001193125-17-178102 Size: 129 KBItem 1.01: Entry into a Material Definitive AgreementItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Cert 网页链接