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SEC Company Response from PROTHENA CORP PUBLIC LTD (PRTA) — Jun 7, 2019

PROTHENA CORP PUBLIC LTD CO
Date: June 7, 2019 · CIK: 0001559053 · Accession: 0001193125-19-168104

AI Filing Summary & Sentiment

File numbers found in text: 001-35676

Referenced dates: May 29, 2019

Date
June 7, 2019
Author
/s/ A. W. Homan
Form
CORRESP
Company
PROTHENA CORP PUBLIC LTD CO

Letter

Prothena Corporation plc

77 Sir John Rogerson’s Quay, Block C

Grand Canal Docklands

Dublin 2, D02 T804, Ireland

June 7, 2019

VIA EDGAR TRANSMISSION

U.S. Securities and Exchange Commission

Division of Corporation Finance

Office of Healthcare & Insurance

100 F Street, N.E.

Washington, DC 20549

Attention:

Frank Wyman

Tabatha McCullom

Re:

Prothena Corporation plc

Form 10-K for the Year Ended December 31, 2017

Filed February 26, 2018

Form 10-Q for the Quarterly Period Ended September 30, 2018

Filed November 6, 2018

File No. 001-35676

Ladies and Gentlemen:

This letter is to confirm the receipt of your letter dated May 29, 2019 (the “SEC Comment Letter”) regarding the Annual Report on Form 10-K for the year ended December 31, 2017 and the Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2018 of Prothena Corporation plc (the “Company”). The Company plans to provide you with a response to the SEC Comment Letter on or before June 19, 2019.

If you have any questions regarding the foregoing, please call John C. Williams of Latham & Watkins LLP at (650) 470-4887 or the undersigned at (650) 615-2113.

Very truly yours,
/s/ A. W. Homan

Show Raw Text
CORRESP
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CORRESP

 Prothena Corporation plc

77 Sir John Rogerson’s Quay, Block C

Grand Canal Docklands

 Dublin 2,
D02 T804, Ireland

 June 7, 2019

 VIA EDGAR
TRANSMISSION

 U.S. Securities and Exchange Commission

Division of Corporation Finance

 Office of Healthcare &
Insurance

 100 F Street, N.E.

 Washington, DC 20549

Attention:

Frank Wyman

Tabatha McCullom

Re:

Prothena Corporation plc

Form 10-K for the Year Ended December 31, 2017

Filed February 26, 2018

Form 10-Q for the Quarterly Period Ended September 30, 2018

Filed November 6, 2018

File No. 001-35676

 Ladies and Gentlemen:

This letter is to confirm the receipt of your letter dated May 29, 2019 (the “SEC Comment Letter”) regarding the Annual Report
on Form 10-K for the year ended December 31, 2017 and the Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2018 of Prothena
Corporation plc (the “Company”). The Company plans to provide you with a response to the SEC Comment Letter on or before June 19, 2019.

If you have any questions regarding the foregoing, please call John C. Williams of Latham & Watkins LLP at (650) 470-4887 or the undersigned at (650) 615-2113.

Very truly yours,

/s/ A. W. Homan

A. W. Homan

Chief Legal Officer and Company Secretary

cc:
 Tran B. Nguyen

Karin Walker

 Kathleen Wells