FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5
                      
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. Issuer Name and Ticker or Trading Symbol

Prothena Corp plc [ PRTA ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Chief Legal Officer
(Last)          (First)          (Middle)

C/O PROTHENA BIOSCIENCES INC, 650 GATEWAY BOULEVARD
3. Date of Earliest Transaction (MM/DD/YYYY)

11/9/2016
(Street)

SOUTH SAN FRANCISCO, CA 94080
(City)        (State)        (Zip)
4. 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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Ordinary Shares, par value $0.01 per share   11/9/2016     M    3125   A $22.14   3125   D    
Ordinary Shares, par value $0.01 per share   11/9/2016     S (1)    3125   D $52.1861   (2) 0   D    
Ordinary Shares, par value $0.01 per share                  2000   I   By Trust   (3)

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   $22.14   11/9/2016     M         3125      (4) 5/1/2024   Ordinary Shares   3125   $0.00   75000   D    

Explanation of Responses:
( 1)  The sale reported in the Form 4 was effected pursuant to a Rule 10b5 1 trading plan adopted by the Reporting Person.
( 2)  The transaction was executed in multiple trades in prices ranging from $52.15 to $52.47, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a stockholder of the Issuer, information regarding the number of shares and prices at which the transaction was effected.
( 3)  The shares are held by the Homan Family Trust, dated 9/21/2001, of which the Reporting Person is a trustee.
( 4)  The shares subject to the option will vest and become exercisable as to 25% of the total number of shares subject to the option on April 30, 2015 and with respect to 1/48th of the total number of shares subject to the option in successive, equal monthly installments on each monthly anniversary thereafter, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.

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


Chief Legal Officer

Signatures
/s/ Arthur W. Homan 11/10/2016
** 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 4(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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
Prothena (NASDAQ:PRTA)
Historical Stock Chart
From Feb 2024 to Mar 2024 Click Here for more Prothena Charts.
Prothena (NASDAQ:PRTA)
Historical Stock Chart
From Mar 2023 to Mar 2024 Click Here for more Prothena Charts.