PROTHENA CORP PUBLIC LTD CO — Director's Dealing 2017

Sep 29, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Prothena Corp plc (PRTA)
CIK: 0001559053
Period of Report: 2017-09-28

Reporting Person: Walker Karin L (See Remarks)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-09-28	Ordinary Shares, par value $0.01 per share	M	1500	$27.81	Acquired	1500	Direct
2017-09-28	Ordinary Shares, par value $0.01 per share	S	1500	$70.00	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-09-28	Stock Option(right to buy)	$27.81	M	1500	Disposed	2025-03-11	Ordinary Shares (1500)	Direct

Footnotes

F1: The sale reported in the Form 4 was effected pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person.

F2: The shares subject to the option will vest and become exercisable as to 25% of the total number of shares subject to the option on March 11, 2016 and with respect to 1/48th of the total number of shares subject to the option in successive, equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continued employment with the Issuer on each such vesting date.