Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
ENRIGHT PATRICK G
  2. Issuer Name and Ticker or Trading Symbol
Jazz Pharmaceuticals plc [JAZZ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O LONGITUDE CAPITAL PARTNERS, LLC, 800 EL CAMINO REAL, SUITE 220
3. Date of Earliest Transaction (Month/Day/Year)
01/18/2012
(Street)

MENLO PARK, CA 94025
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 01/18/2012   A(1)   49,985 A (2) 49,985 D  
Ordinary Shares 01/18/2012   A(1)   2,827,390 A (2) 2,827,390 I By Longitude Venture Partners, L.P. (3)
Ordinary Shares 01/18/2012   A(1)   56,667 A (2) 56,667 I By Longitude Capital Associates, L.P. (3)

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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
Phantom Stock (4) 01/18/2012   A(1)   9,929     (4)   (4) Ordinary Shares 9,929 (5) 9,929 D  
Warrant (right to buy) $ 4 01/18/2012   A(1)   929,243   07/07/2009 07/06/2016 Ordinary Shares 929,243 (6) 929,243 I By Longitude Venture Partners, L.P. (3)
Warrant (right to buy) $ 4 01/18/2012   A(1)   18,624   07/07/2009 07/06/2016 Ordinary Shares 18,624 (6) 18,624 I By Longitude Capital Associates, L.P. (3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
ENRIGHT PATRICK G
C/O LONGITUDE CAPITAL PARTNERS, LLC
800 EL CAMINO REAL, SUITE 220
MENLO PARK, CA 94025
  X      

Signatures

 /s/ Carol A. Gamble as attorney in fact for Patrick G. Enright   01/18/2012
**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 made in connection with the conversion of securities in the merger (the "Merger") pursuant to the Agreement and Plan of Merger and Reorganization by and among the Issuer, Jaguar Merger Sub Inc., Jazz Pharmaceuticals, Inc. and Seamus Mulligan, solely in his capacity as indemnitors' representative. The effective date of the Merger is January 18, 2012. This report is being filed by the Reporting Person solely to report the acquisition of securities of the Issuer made in connection with the Merger. The Reporting Person has filed a separate Form 4 to reflect the corresponding disposition of securities of Jazz Pharmaceuticals, Inc. made in connection with the Merger.
(2) Received in exchange for an equal number of shares of Jazz Pharmaceuticals, Inc. common stock in connection with the Merger. On the effective date of the Merger, the closing price of JAZZ was $47.34 per share.
(3) The Reporting Person is a managing member of Longitude Capital Partners, LLC ("Longitude Capital"), the sole general partner of each of Longitude Venture Partners, L.P. and Longitude Capital Associates, L.P. The Reporting Person disclaims beneficial ownership of the securities of the Issuer held by Longitude Venture Partners, L.P. and Longitude Capital Associates, L.P., except to the extent of his pecuniary interest therein.
(4) Each share of phantom stock is the economic equivalent of one ordinary share of the Issuer. The shares of phantom stock become payable in the Issuer's ordinary shares upon the earlier to occur of the tenth (10th) business day following (i) the Reporting Person's separation from service as a director or (ii) a Change of Control (as defined under the Issuer's Amended and Restated Directors Deferred Compensation Plan).
(5) Received in the Merger in exchange for, and having substantially the same terms as, shares of phantom stock of Jazz Pharmaceuticlas, Inc.
(6) Received in the Merger in exchange for a warrant to acquire the same number of shares of common stock of Jazz Pharmaceuticals, Inc. at the same exercise price and on substantially the same terms.

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