Live feed20:34:18·13mINSIDERFilingvia QuantisnowChief Accounting Officer Walker Karin L converted options into 15,000 units of Ordinary Shares and returned $128,400 worth of Ordinary Shares to the company (15,000 units at $8.56) (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PRTA· Prothena Corporation plcHealth CareOriginal source