PROTHENA CORP PUBLIC LTD CO — Director's Dealing 2021

May 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PROTHENA CORP PUBLIC LTD CO (PRTA)
CIK: 0001559053
Period of Report: 2021-05-19

Reporting Person: Patel Sanjiv (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-19	Stock Option (Right to Buy)	$23.97	A	30000	Acquired	2031-05-19	Ordinary Shares (30000)	Direct

Footnotes

F1: The shares subject to the option will vest and become exercisable as to 33 1/3% of the total number of shares subject to the option on the first anniversary of the grant date, 33 1/3% on the second anniversary of the grant date, and the remaining 33 1/3% on the earlier of the third anniversary of the grant date or the day of the annual general meeting in 2024 of the Issuer's shareholders, assuming continuous services as a director until each such vesting date.