Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Schenk Dale B.
 2. Date of Event Requiring Statement (Month/Day/Year)
12/20/2012		 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)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President & CEO
 5. If Amendment, Date Original Filed(Month/Day/Year)
12/21/2012
(Street)

SOUTH SAN FRANCISCO, CA 94080		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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)
Ordinary Shares, par value $0.01 per share 161 (1)
D
 
Ordinary Shares, par value $0.01 per share 50 (1) (2)
I
By Trust

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 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

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Schenk Dale B.
PROTHENA CORPORATION PLC
650 GATEWAY BOULEVARD
SOUTH SAN FRANCISCO, CA 94080		   X     President & CEO  

Signatures

/s/ Kevin Hickey, as Attorney-in-Fact for Dale B. Schenk 03/18/2014
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Represents that number of Issuer's ordinary shares held by Reporting Person after giving effect to the distribution of Issuer's ordinary shares in connection with the spin-off of the Issuer from Elan Pharmaceuticals, Inc. ("Elan") completed on December 20, 2012. Reporting Person received one Issuer ordinary share for each 41 Elan ordinary shares or Elan American Depository Shares held by Reporting Person as of December 14, 2012, the record date for the spin off.
(2) Shares are held by the Schenk Family Trust dated 2/9/2004, of which Reporting Person is a trustee.

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