$Amphastar Pharmaceuticals(AMPH)$ 8-K - Current report Filed: 2015-06-01 AccNo: 0001104659-15-042113 Size: 343 KBItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain OfficersItem 5.07: Submission of Matters to a Vot 网页链接