$Protagonist(PTGX)$ 8-K - Current report Filed: 2019-05-13 AccNo: 0001104659-19-029003 Size: 107 KBItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain OfficersItem 9.01: Financial Statements and Exhibits 网页链接