Platinum Investment Management LTD Prothena Corp Public LTD CO Transaction History

Platinum Investment Management LTD

13 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q4 2022 Feb 13, 2023	SELL	$52.05 - $65.0 $385,482 - $481,390	-7,406 Reduced 15.14%	41,508 $2.5 Million
Q3 2022 Nov 14, 2022	SELL	$25.16 - $60.63 $291,805 - $703,186	-11,598 Reduced 19.17%	48,914 $2.97 Million
Q3 2021 Nov 09, 2021	SELL	$48.2 - $78.89 $2 Million - $3.27 Million	-41,393 Reduced 40.62%	60,512 $4.31 Million
Q2 2021 Aug 11, 2021	SELL	$21.63 - $57.65 $569,258 - $1.52 Million	-26,318 Reduced 20.53%	101,905 $5.24 Million
Q1 2020 May 15, 2020	SELL	$7.54 - $15.77 $95,908 - $200,594	-12,720 Reduced 9.02%	128,223 $1.37 Million
Q4 2019 Feb 13, 2020	SELL	$7.48 - $17.01 $366,879 - $834,306	-49,048 Reduced 25.82%	140,943 $2.23 Million
Q2 2019 Aug 14, 2019	BUY	$8.85 - $12.49 $249,083 - $351,531	28,145 Added 17.39%	189,991 $2.01 Million
Q4 2018 Feb 14, 2019	BUY	$8.73 - $13.74 $232,619 - $366,116	26,646 Added 19.71%	161,846 $1.67 Million
Q2 2018 Aug 15, 2018	BUY	$10.99 - $44.21 $626,430 - $2.52 Million	57,000 Added 72.89%	135,200 $1.97 Million
Q1 2018 May 15, 2018	BUY	$27.95 - $45.04 $218,010 - $351,312	7,800 Added 11.08%	78,200 $2.87 Million
Q4 2017 Feb 15, 2018	BUY	$35.44 - $63.76 $297,696 - $535,584	8,400 Added 13.55%	70,400 $2.64 Million
Q3 2017 Nov 14, 2017	SELL	$53.83 - $67.75 $242,235 - $304,875	-4,500 Reduced 6.77%	62,000 $4.02 Million
Q2 2017 Aug 15, 2017	BUY	N/A	66,500	66,500 $3.6 Million

184

42.7M

162K

102K

Ticker PRTA
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 46,922,800
Market Cap $714M
Description
Prothena Corporation plc, a late-stage clinical company, focuses on discovery and development of novel therapies for life-threatening diseases in the United States. The company is involved in developing Birtamimab, an investigational humanized antibody that is in Phase III clinical trial for the treatment of AL amyloidosis; Prasinezumab, a human...

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