PROTHENA CORP PUBLIC LTD CO (PRTA) Insider Trading -- Recent Executive & Director Transactions

9 insiders reported 29 Form 4 transactions for PROTHENA CORP PUBLIC LTD CO (PRTA) over the past 18 months (most recent 2026-06-18). Recent activity: SCULLY WILLIAM P (Insider) Buy 20,000 shares, SCULLY WILLIAM P (Insider) Sell 325,000 shares, SCULLY WILLIAM P (Insider) Buy 125,000 shares, SCULLY WILLIAM P (Insider) Buy 50,000 shares, SCULLY WILLIAM P (Insider) Buy 50,000 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-06-18SCULLY WILLIAM PInsiderBuy20,000$157,990
2026-06-16SCULLY WILLIAM PInsiderSell325,000$0
2026-06-12SCULLY WILLIAM PInsiderBuy125,000$1.0M
2026-06-05SCULLY WILLIAM PInsiderBuy50,000$465,295
2026-06-03SCULLY WILLIAM PInsiderBuy50,000$471,300
2025-07-30Swanson Chad J.Chief Development OfficerBuy85,000$0
2025-07-30Malecek Michael JChief Legal OfficerBuy80,000$0
2025-07-30Nguyen TranChief Strategy Officer and CFOBuy95,000$0
2025-07-30Zago Wagner M.Chief Scientific OfficerBuy85,000$0
2025-07-30Kinney Gene G.President and CEOBuy140,000$0
2025-07-30Walker Karin LChief Accounting OfficerBuy25,000$0
2025-07-30Smith Brandon S.Chief Operating OfficerBuy130,000$0
2025-05-06EcoR1 Capital, LLCInsiderSell3.3M$27.7M
2025-05-06EcoR1 Capital, LLCInsiderSell977,693$7.9M
2025-05-06EcoR1 Capital, LLCInsiderSell2.0M$15.2M
2025-05-02SCULLY WILLIAM PInsiderBuy430,000$0
2025-05-02SCULLY WILLIAM PInsiderBuy73,436$1.0M
2025-05-02SCULLY WILLIAM PInsiderSell681,000$0
2025-05-02SCULLY WILLIAM PInsiderBuy2,000$31,820
2025-05-02SCULLY WILLIAM PInsiderSell500$0
2025-05-02SCULLY WILLIAM PInsiderBuy1,200$16,044
2025-05-02SCULLY WILLIAM PInsiderBuy800$10,712
2025-05-02SCULLY WILLIAM PInsiderBuy30,000$389,700
2025-05-02SCULLY WILLIAM PInsiderSell13,200$0
2025-05-02SCULLY WILLIAM PInsiderSell1,000$0

Source: SEC Form 4 filings · as of 2026-06-18