Prothena Corporation plc
Prothena Corp plc (Form: 3, Received: 05/02/2014 16:06:15)
FORM 3
        
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

HOMAN ARTHUR W

2. Date of Event Requiring Statement (MM/DD/YYYY)
4/30/2014 

3. Issuer Name and Ticker or Trading Symbol

Prothena Corp plc [PRTA]

(Last)        (First)        (Middle)

PROTHENA CORPORATION PLC, 650 GATEWAY BOULEVARD

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                            _____ 10% Owner
___ X ___ Officer (give title below)          _____ Other (specify below)
Chief Legal Officer /

(Street)

SOUTH SAN FRANCISCO, CA 94080       

(City)              (State)              (Zip)
5. If Amendment, Date Original Filed (MM/DD/YYYY)

 

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person


Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(MM/DD/YYYY)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:
No securities are beneficially owned.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
HOMAN ARTHUR W
PROTHENA CORPORATION PLC
650 GATEWAY BOULEVARD
SOUTH SAN FRANCISCO, CA 94080


Chief Legal Officer

Signatures
/s/ Kevin J. Hickey, as Attorney in Fact for Arthur W. Homan 5/2/2014
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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                               POWER OF ATTORNEY


     KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints Karin L. Walker, Kevin J. Hickey and Shane Cooke, and their respective
successors, and each of them the undersigned's true and lawful attorneys-in-fact
and agents with full power of substitution, signing singly, for the undersigned
and in the undersigned's name, place and stead, in any and all capacities, to:

  1. prepare, execute in the undersigned's name and on the undersigned's
     behalf, and submit to the U.S. Securities and Exchange Commission (the
     "SEC") a Form ID, including amendments thereto, and any other documents
     necessary or appropriate to obtain codes and passwords enabling the
     undersigned to make electronic filings with the SEC of reports required by
     Section 16(a) of the Securities Exchange Act of 1934 (as amended, the
     "Exchange Act") or any rule or regulation of the SEC;

  2. complete, execute and timely file for and on behalf of the
     undersigned, in the undersigned's capacity as an officer and/or director
     of Prothena Corporation plc (the "Company") and/or 10% holder of the
     Company's capital stock, Forms 3, 4 and 5, any other forms,  and any
     amendments thereto in accordance with Section 16(a) of the Exchange Act
     and the rules and regulations thereunder;

  3. take any other action of any type whatsoever in connection with the
     foregoing which, in the opinion of such attorney-in-fact, may be of
     benefit to, in the best interest of, or legally required by, the
     undersigned, it being understood that the documents executed by such
     attorney-in-fact on behalf of the undersigned pursuant to this Power of
     Attorney shall be in such form and shall contain such terms and
     conditions as such attorney-in-fact may approve in such attorney-in-
     fact's discretion.

     The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities to comply
with Section 16 of the Exchange Act.

     The undersigned agrees that each such attorney-in-fact herein may rely
entirely on information furnished orally or in writing by the undersigned to
such attorney-in-fact.  The undersigned also agrees to indemnify and hold
harmless the Company and each such attorney-in- fact against any losses, claims,
damages or liabilities (or actions in these respects) that arise out of or are
based upon any untrue statements or omission of necessary facts in the
information provided by the undersigned to such attorney-in fact for purposes of
executing, acknowledging, delivering or filing Forms 3, 4 or 5, Form ID or any
other form (including amendments thereto) and agrees to reimburse the Company
and such attorney-in-fact for any legal or other expenses reasonably incurred in
connection with investigating or defending against any such loss, claim, damage,
liability or action.

     This Power of Attorney supersedes any power of attorney previously executed
by the undersigned regarding the purposes outlined in the first paragraph hereof
("Prior Powers of Attorney"), and the authority of the attorneys-in-fact named
in any Prior Powers of Attorney is hereby revoked.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier (a) revoked by the undersigned in a signed writing delivered to
the foregoing attorneys-in-fact or (b) superseded by a new power of attorney
regarding the purposes outlined in the first paragraph hereof dated as of a
later date.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 30th day of April, 2014.

                                          Signature:  /s/ Arthur W. Homan
                                                      --------------------------
                                                      Name: ARTHUR W. HOMAN