Karin Walker, CAO at Prothena, holds 0.00 shares in Prothena (Ticker: PRTA), holds 40.60K shares in Cyclacel Pharmaceuticals (Ticker: CYCC), holds 0.00 shares in Affymax (Ticker: AFFY). Most recently, Karin Walker Bought ― shares of Prothena on Jan 24, 2024 for an estimated value of 67.65K.