PROTHENA CORP PUBLIC LTD CO — Director's Dealing 2017

Mar 1, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Prothena Corp plc (PRTA)
CIK: 0001559053
Period of Report: 2017-02-27

Reporting Person: HENNEY CHRISTOPHER S (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-27	Ordinary Shares, par value $0.01 per share	M	5989	$6.65	Acquired	5989	Direct
2017-02-27	Ordinary Shares, par value $0.01 per share	S	5989	$57.1632	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-27	Stock Option
(right to buy)	$6.65	M	5989	Disposed	2023-03-18	Ordinary Shares (5989)	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 transaction was executed in multiple trades in prices ranging from $57.00 to $57.80, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a stockholder of the Issuer, information regarding the number of shares and prices at which the transaction was effected.

F3: The shares subject to the option are fully vested and exercisable as of the date hereof.