Prothena Corp Public Ltd Co

Ownership Transactions Reported by 24 Insiders

Symbol: PRTA on Nasdaq
Industry: Pharmaceutical Preparations
Location: 77 Sir John Rogerson's Quay, Block C, Grand Canal Docklands, Dublin 2, Ireland

	Insiders	Shares	%	Avg Price	Total $
Buys	1	+207K	3.2%	$13.26	+$2.75M
Sells	1	-6.28M	96.8%	$8.10	-$50.8M
Net	0	-6.07M	-93.6%		-$48.1M

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Report Date
EcoR1 Capital, LLC	10%+ Owner	$40.5M	-$50.8M	-55.6%	May 2, 2025
William P. Scully	10%+ Owner	$11.4M	+$2.75M	+31.9%	Dec 18, 2024
Gene G. Kinney	President and CEO, Director	$1.16M			Jul 28, 2025
Brandon S. Smith	Chief Operating Officer	$987K			Jul 28, 2025
Tran Nguyen	Chief Strategy Officer and CFO	$738K			Jul 28, 2025
Wagner M. Zago	Chief Scientific Officer	$645K			Jul 28, 2025
Chad J. Swanson	Chief Development Officer	$645K			Jul 28, 2025
Michael Malecek	Chief Legal Officer	$607K			Jul 28, 2025
Karin L. Walker	Chief Accounting Officer	$190K			Jul 28, 2025
Daniel G. Welch	Director				May 14, 2025
Carol D. Karp	Chief Regulatory Officer				Mar 5, 2025
Collier Richard T	Director				May 14, 2025
William H. Dunn Jr.	Director				May 14, 2025
Hideki Garren	Chief Medical Officer				Feb 27, 2024
Radhika Tripuraneni	Chief Development Officer				Feb 23, 2022
Dennis J. Selkoe	Director				May 14, 2025
David A. Ford	Chief People Officer				Mar 5, 2025
Christopher S. Henney	Director				Jul 14, 2021
Lars Ekman	Director				May 14, 2025
Helen S. Kim	Director				May 14, 2025
Shane Cooke	Director				May 14, 2025
Paula K. Cobb	Director				May 14, 2025
Sanjiv Patel	Director				May 18, 2022
Karl Anders Olof Harfstrand	Director				May 17, 2023

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.