Edgar Filing: AMARIN CORP PLC\UK

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 ^*

Abingworth LLP

2. Issuer Name and Ticker or Trading Symbol
AMARIN CORP PLC\UK [AMRN]

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

_____ Director	__X__ 10% Owner
_____ Officer (give title below)	_____ Other (specify below)

(Last)

(First)

(Middle)

PRINCES HOUSE, 38 JERMYN STREET

3. Date of Earliest Transaction (Month/Day/Year)
04/17/2012

(Street)

LONDON, X0 SW1Y 6DN

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)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares, 50 pence par value per share	04/17/2012		S		1,712,000 ⁽¹⁾ ⁽²⁾	D	$ 9.6111	3,895,509	I ⁽¹⁾ ⁽²⁾	See Notes ⁽¹⁾ ⁽²⁾
Ordinary Shares, 50 pence par value per share	04/18/2012		S		1,614,341 ⁽¹⁾ ⁽²⁾	D	$ 9.6049	2,281,168	I ⁽¹⁾ ⁽²⁾	See Notes ⁽¹⁾ ⁽²⁾
Ordinary Shares, 50 pence par value per share	04/19/2012		S		682,000 ⁽¹⁾ ⁽²⁾	D	$ 9.6574	1,599,168	I ⁽¹⁾ ⁽²⁾	See Notes ⁽¹⁾ ⁽²⁾

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Abingworth LLP PRINCES HOUSE 38 JERMYN STREET LONDON, X0 SW1Y 6DN		X

Signatures

/s/ John Heard, Authorized Signatory		04/19/2012
^**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)	Abingworth LLP (the "Reporting Person") is the investment manager to a number of investment funds that include Abingworth Bioventures V L.P. ("ABV V"), Abingworth Bioventures V Co-Invest Growth Equity Fund LP ("AGE"), and Abingworth Bioequities Master Fund Limited ("ABE," and collectively with ABV V and AGE, the "Abingworth Funds"). On April 17, 2012, ABV sold 754,992 ordinary shares, 50 pence par value per share, of Amarin Corporation plc ("Ordinary Shares"), AGE sold 754,992 Ordinary Shares, and ABE sold 202,016 Ordinary Shares. On April 18, 2012, ABV sold 716,767 Ordinary Shares, AGE sold 716,767 Ordinary Shares, and ABE sold 180,807 Ordinary Shares. On April 19, 2012, ABV sold 302,808 Ordinary Shares, AGE sold 302,808 Ordinary Shares, and ABE sold 76,384 Ordinary Shares.
(2)	The Reporting Person may be deemed to beneficially own the Ordinary Shares reported herein indirectly through the Abingworth Funds. The Reporting Person's interest in the securities reported herein is limited to the extent of its pecuniary interest, if any, in the Abingworth Funds. This report shall not be deemed an admission that the Reporting Person, each Abingworth Fund or any other person is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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