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 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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1. Name and Address of Reporting Person * Carey Robert   2. Issuer Name and Ticker or Trading Symbol Horizon Pharma plc [HZNP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP & Chief Business Officer (Last) (First) (Middle) C/O HORIZON PHARMA PLC, ADELAIDE CHAMBERS, PETER STREET 3. Date of Earliest Transaction (Month/Day/Year) 09/19/2014 (Street) DUBLIN, L2 8 4. If Amendment, Date Original Filed(Month/Day/Year) 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 Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 09/19/2014   A(1)   57,655 A (1) 57,655 I By Robert F. Carey III Trust dated 04/24/2001

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction 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 (Month/Day/Year)

7. Title and Amount of Underlying Securities (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

Warrant to purchase ordinary shares

$ 4.308

09/19/2014

A(1)

6,913

03/02/2012

03/02/2017

Ordinary Shares

6,913

(2)

6,913

I

By Robert F. Carey III Trust dated 04/24/2001

Employee stock option (right to buy)

$ 13.34

09/19/2014

A(1)

100,000

(3)

03/04/2024

Ordinary Shares

100,000

(4)

100,000

D

Employee stock option (right to buy)

$ 13.34

09/19/2014

A(1)

140,000

(5)

03/04/2024

Ordinary Shares

140,000

(4)

140,000

D

Restricted stock units

(6)

09/19/2014

A(1)

124,100

(7)

(6)

Ordinary Shares

124,100

(6)

124,100

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Carey Robert C/O HORIZON PHARMA PLC ADELAIDE CHAMBERS, PETER STREET DUBLIN, L2 8			EVP & Chief Business Officer

Signatures

/s/ Paul W. Hoelscher, Attorney-in-Fact		09/22/2014
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Acquisition in connection with the merger (the "Merger") contemplated by the Transaction Agreement and Plan of Merger among Horizon Pharma, Inc., Vidara Therapeutics Holdings LLC, the Issuer (formerly known as Vidara Therapeutics International Ltd.), Hamilton Holdings (USA), Inc. and Hamilton Merger Sub, Inc. Pursuant to the Merger, the outstanding securities of Horizon Pharma, Inc. are being canceled and automatically converted into securities of the Issuer. The Reporting Person's disposition of securities of Horizon Pharma, Inc. in the Merger will be reported on a separate Form 4.
(2)	In connection with the Merger, the warrant originally issued by Horizon Pharma, Inc. has been assumed and converted into a warrant to acquire the same number of ordinary shares of the Issuer at the same exercise price and on substantially the same terms.
(3)	The shares subject to the stock option vest in 12 equal monthly installments following the grant date of 3/5/2014.
(4)	In connection with the Merger, the stock option originally granted by Horizon Pharma, Inc. has been converted into an option to purchase the same number of ordinary shares of the Issuer at the same exercise price and on substantially the same terms.
(5)	25% of the shares subject to the stock option vest on 6/23/2015, and the remaining shares vest in 36 equal monthly installments thereafter.
(6)	Each restricted stock unit represented a contingent right to receive one share of Horizon Pharma, Inc. common stock. Each restricted stock unit has been converted into a contingent right to receive one ordinary share of the Issuer.
(7)	The restricted stock units vest in four equal annual installments.

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