<SEC-DOCUMENT>0001973141-23-000236.txt : 20231004
<SEC-HEADER>0001973141-23-000236.hdr.sgml : 20231004
<ACCEPTANCE-DATETIME>20231004160320
ACCESSION NUMBER:		0001973141-23-000236
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20231004
DATE AS OF CHANGE:		20231004

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROTHENA CORP PUBLIC LTD CO
		CENTRAL INDEX KEY:			0001559053
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-35676
		FILM NUMBER:		231307888

	BUSINESS ADDRESS:	
		STREET 1:		77 SIR JOHN ROGERSON'S QUAY, BLOCK C
		STREET 2:		GRAND CANAL DOCKLANDS
		CITY:			DUBLIN 2
		STATE:			L2
		ZIP:			D02 VK60
		BUSINESS PHONE:		011-353-1-236-2500

	MAIL ADDRESS:	
		STREET 1:		77 SIR JOHN ROGERSON'S QUAY, BLOCK C
		STREET 2:		GRAND CANAL DOCKLANDS
		CITY:			DUBLIN 2
		STATE:			L2
		ZIP:			D02 VK60

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Prothena Corp plc
		DATE OF NAME CHANGE:	20121102

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Neotope Corp Ltd
		DATE OF NAME CHANGE:	20120926

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Karp Carol D.
		CENTRAL INDEX KEY:			0001692214

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		C/O PROTHENA BIOSCIENCES INC
		STREET 2:		331 OYSTER POINT BOULEVARD
		CITY:			SOUTH SAN FRANCISCO
		STATE:			CA
		ZIP:			94080
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001692214</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001559053</issuerCik>
      <issuerName>PROTHENA CORP PUBLIC LTD CO</issuerName>
      <secFileNumber>001-35676</secFileNumber>
      <issuerAddress>
        <com:street1>77 SIR JOHN ROGERSON'S QUAY, BLOCK C</com:street1>
        <com:street2>GRAND CANAL DOCKLANDS</com:street2>
        <com:city>DUBLIN 2</com:city>
        <com:stateOrCountry>L2</com:stateOrCountry>
        <com:zipCode>D02 VK60</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>011-353-1-236-2500</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Karp Carol D.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Officer</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>UBS Financial Services, Inc</name>
        <address>
          <com:street1>1000 Harbor Blvd</com:street1>
          <com:street2>3rd Floor</com:street2>
          <com:city>Weehawken</com:city>
          <com:stateOrCountry>NJ</com:stateOrCountry>
          <com:zipCode>07086</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>5000</noOfUnitsSold>
      <aggregateMarketValue>237000.00</aggregateMarketValue>
      <noOfUnitsOutstanding>53535300</noOfUnitsOutstanding>
      <approxSaleDate>10/04/2023</approxSaleDate>
      <securitiesExchangeName>Nasdaq</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <acquiredDate>10/04/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>5000</amountOfSecuritiesAcquired>
      <paymentDate>10/04/2023</paymentDate>
      <natureOfPayment>CASH</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Carol Karp</name>
        <address>
          <com:street1>77 Sir John Rogerson's Quay</com:street1>
          <com:street2>Block C, Grand Canal Docklands</com:street2>
          <com:city>Dublin 2</com:city>
          <com:stateOrCountry>L2</com:stateOrCountry>
          <com:zipCode>D02 VK6</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <saleDate>09/06/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>273803.50</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Carol Karp</name>
        <address>
          <com:street1>77 Sir John Rogerson's Quay</com:street1>
          <com:street2>Block C, Grand Canal Docklands</com:street2>
          <com:city>Dublin 2</com:city>
          <com:stateOrCountry>L2</com:stateOrCountry>
          <com:zipCode>D02 VK60</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <saleDate>08/02/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>335072.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Carol Karp</name>
        <address>
          <com:street1>77 Sir John Rogerson's Quay</com:street1>
          <com:street2>Block C, Grand Canal Docklands</com:street2>
          <com:city>Dublin 2</com:city>
          <com:stateOrCountry>L2</com:stateOrCountry>
          <com:zipCode>D02 VK60</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>COMMON</securitiesClassTitle>
      <saleDate>07/05/2023</saleDate>
      <amountOfSecuritiesSold>5000</amountOfSecuritiesSold>
      <grossProceeds>340636.00</grossProceeds>
    </securitiesSoldInPast3Months>
    <remarks>The transactions reported herein were effected pursuant to a Rule 10b5-1 trading plan</remarks>
    <noticeSignature>
      <noticeDate>10/04/2023</noticeDate>
      <planAdoptionDates>
        <planAdoptionDate>03/07/2023</planAdoptionDate>
      </planAdoptionDates>
      <signature>/s/ UBS Financial Services Inc, as attorney-in-fact for Carol Karp</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
