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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
_______________________________________________________
FORM 8-K 
_______________________________________________________
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): June 24, 2021
_______________________________________________________
PROTHENA CORPORATION PUBLIC LIMITED COMPANY
(Exact name of registrant as specified in its charter)
_______________________________________________________
Ireland 001-35676 98-1111119
(State or Other Jurisdiction
of Incorporation)
 (Commission
File Number)
 (IRS Employer
Identification No.)
77 Sir John Rogerson's Quay, Block C
Grand Canal Docklands

Dublin 2, D02 VK60, Ireland
(Address of principal executive offices, including Zip Code)
Registrant’s telephone number, including area code: 011-353-1-236-2500
___________________________________________________
(Former Name or Former Address, if Changed Since Last Report.) 
___________________________________________________
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of Each ClassTrading SymbolName of Each Exchange on Which Registered
Ordinary Shares, par value $0.01 per sharePRTAThe Nasdaq Global Select Market
Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
                                        Emerging growth company




If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐




Item 8.01.    Other Events.

On June 24, 2021, Prothena Corporation plc issued a press release announcing that Bristol Myers Squibb exercised its option under the terms of the ongoing global neuroscience research and development collaboration to enter into an exclusive U.S. license for PRX005. A copy of that press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01.    Financial Statements and Exhibits.

(d)    Exhibits
    
Exhibit No.Description
99.1
104Cover Page Interactive Data File (embedded within the Inline XBRL document)
    # Indicates management contract or compensatory plan or arrangement.


SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: June 24, 2021PROTHENA CORPORATION PLC
By: /s/ Tran B. Nguyen
Name: Tran B. Nguyen
Title: Chief Operating Officer and Chief Financial Officer