Prothena plc

Science One Elan LTD sold 3,182,253 shares of PRTA on 3 February. They now own 0 PRTA shares, or a 100% holding decrease.

Tran Nguyen bought 2,200 shares of PRTA on 9 May. They now own 2,200 PRTA shares, or a Infinity% holding increase.

Gene G Kinney bought 2,500 shares of PRTA on 9 May. They now own 2,793 PRTA shares, or a 853% holding increase.

Dale B Schenk bought 8,000 shares of PRTA on 12 May. They now own 8,161 PRTA shares, or a 4969% holding increase.

Tara Nickerson bought 1,656 shares of PRTA on 12 May. They now own 2,000 PRTA shares, or a 481% holding increase.

Karin L Walker sold 8,000 shares of PRTA on 6 June. They now own 0 PRTA shares, or a 100% holding decrease.

Arthur W Homan bought 2,000 shares of PRTA on 7 August. They now own 2,000 PRTA shares, or a Infinity% holding increase.

Karin L Walker sold 2,500 shares of PRTA on 12 August. They now own 0 PRTA shares, or a 100% holding decrease.

Karin L Walker sold 2,500 shares of PRTA on 16 October. They now own 0 PRTA shares, or a 100% holding decrease.

Karin L Walker sold 2,500 shares of PRTA on 9 December. They now own 0 PRTA shares, or a 100% holding decrease.

Karin L Walker sold 2,500 shares of PRTA on 10 February. They now own 0 PRTA shares, or a 100% holding decrease.

Dennis J Selkoe sold 3,125 shares of PRTA on 9 March. They now own 2,845 PRTA shares, or a 52% holding decrease.

Tara Nickerson sold 13,000 shares of PRTA on 20 March. They now own 2,000 PRTA shares, or a 87% holding decrease.

Dennis J Selkoe sold 3,125 shares of PRTA on 1 June. They now own 2,845 PRTA shares, or a 52% holding decrease.

Tara Nickerson sold 12,000 shares of PRTA on 9 June. They now own 2,000 PRTA shares, or a 86% holding decrease.

Christopher S Henney sold 10,000 shares of PRTA on 7 August. They now own 0 PRTA shares, or a 100% holding decrease.

Karin L Walker sold 7,000 shares of PRTA on 12 August. They now own 0 PRTA shares, or a 100% holding decrease.

Dale B Schenk sold 30,000 shares of PRTA on 20 August. They now own 3,333 PRTA shares, or a 90% holding decrease.

Arthur W Homan sold 3,125 shares of PRTA on 1 September. They now own 0 PRTA shares, or a 100% holding decrease.

Dennis J Selkoe sold 3,125 shares of PRTA on 1 September. They now own 2,845 PRTA shares, or a 52% holding decrease.

Martin Koller sold 24,600 shares of PRTA on 1 September. They now own 0 PRTA shares, or a 100% holding decrease.

Martin Koller sold 5,400 shares of PRTA on 2 September. They now own 0 PRTA shares, or a 100% holding decrease.

Tara Nickerson sold 10,000 shares of PRTA on 9 September. They now own 2,000 PRTA shares, or a 83% holding decrease.

Christopher S Henney sold 5,000 shares of PRTA on 29 October. They now own 0 PRTA shares, or a 100% holding decrease.

Arthur W Homan sold 3,125 shares of PRTA on 2 November. They now own 0 PRTA shares, or a 100% holding decrease.