PRTA

PROTHENA CORP PUBLIC LTD CO

Pharmaceutical PreparationsNasdaqLarge accelerated filer

Total Trades

177

Buys

Sells

Largest Trade

$1M+

Insiders

Institutional Funds

137

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Nguyen Tran	Chief Strategy Off…	EXERCISE	$50K–$100K	10K	$6.73	Aug 27, 2022
Nguyen Tran	Chief Strategy Off…	SELL	$100K–$500K	10K	$30.17	Aug 27, 2022
Kinney Gene G.	President and CEO	EXERCISE	$1K–$15K	2K	$6.41	Aug 20, 2022
Kinney Gene G.	President and CEO	SELL	$50K–$100K	2K	$32.03	Aug 20, 2022
Kinney Gene G.	President and CEO	EXERCISE	$100K–$500K	35K	$6.41	Aug 13, 2022
Kinney Gene G.	President and CEO	SELL	$1M+	35K	$32.15	Aug 13, 2022
Kinney Gene G.	President and CEO	SELL	$1M+	42K	$32.51	Aug 6, 2022
Kinney Gene G.	President and CEO	EXERCISE	$100K–$500K	42K	$6.41	Aug 6, 2022
Garren Hideki	Chief Medical Offi…	EXERCISE	$50K–$100K	4K	$24.90	Aug 4, 2022
Garren Hideki	Chief Medical Offi…	SELL	$100K–$500K	4K	$30.52	Aug 4, 2022
Kinney Gene G.	President and CEO	EXERCISE	$1K–$15K	376	$6.41	Jul 30, 2022
Kinney Gene G.	President and CEO	SELL	$1K–$15K	376	$32.00	Jul 30, 2022
Nguyen Tran	Chief Strategy Off…	SELL	$1M+	70K	$32.54	Jul 23, 2022
Nguyen Tran	Chief Strategy Off…	EXERCISE	$100K–$500K	70K	$6.73	Jul 23, 2022
Cooke Shane	Director	SELL	$100K–$500K	15K	$32.90	Jul 23, 2022
Cooke Shane	Director	EXERCISE	$50K–$100K	15K	$6.41	Jul 23, 2022
Garren Hideki	Chief Medical Offi…	SELL	$100K–$500K	8K	$30.00	Jul 9, 2022
Garren Hideki	Chief Medical Offi…	EXERCISE	$100K–$500K	8K	$24.90	Jul 9, 2022
EcoR1 Capital, LLC	10% Owner	SELL	$1M+	1.1M	$29.02	May 9, 2022
EcoR1 Capital, LLC	10% Owner	BUY	$1M+	1.1M	$29.02	May 9, 2022
Cooke Shane	Director	SELL	$100K–$500K	5K	$35.08	Apr 14, 2022
Cooke Shane	Director	EXERCISE	$15K–$50K	5K	$6.41	Apr 14, 2022
COLLIER RICHARD T	Director	EXERCISE	$15K–$50K	5K	$6.41	Apr 8, 2022
COLLIER RICHARD T	Director	SELL	$100K–$500K	5K	$39.41	Apr 8, 2022
EcoR1 Capital, LLC	10% Owner	BUY	$1M+	300K	$37.50	Jan 12, 2022
Selkoe Dennis J.	Director	SELL	$100K–$500K	5K	$47.45	Jan 6, 2022
Selkoe Dennis J.	Director	EXERCISE	$15K–$50K	5K	$9.23	Jan 6, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 137 funds holding

Fund	Shares	Value	Type
Rubric Capital Management LP	3.7M	$1M+	SH
STATE STREET CORP	2.3M	$1M+	SH
ADAR1 Capital Management, LLC	1.5M	$1M+	SH
ADAR1 Capital Management, LLC	1.5M	$1M+	SH
ACADIAN ASSET MANAGEMENT LLC	1.4M	$1M+	SH
Palo Alto Investors LP	1.3M	$1M+	SH
JACOBS LEVY EQUITY MANAGEMENT, INC	978K	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	919K	$1M+	SH
Point72 Asset Management, L.P.	860K	$1M+	SH
DIMENSIONAL FUND ADVISORS LP	744K	$1M+	SH
Mariner, LLC	578K	$1M+	SH
Birchview Capital, LP	441K	$1M+	SH
RENAISSANCE TECHNOLOGIES LLC	436K	$1M+	SH
BNP PARIBAS FINANCIAL MARKETS	424K	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	357K	$1M+	SH
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	298K	$1M+	SH
Man Group plc	270K	$1M+	SH
JANE STREET GROUP, LLC	245K	$1M+	SH
VANGUARD GROUP INC	241K	$1M+	SH
Squarepoint Ops LLC	218K	$1M+	SH