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SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
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OMB Number: 3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Ketchum Steven B
(Last) (First) (Middle)
C/O AMARIN PHARMA, INC.
1430 ROUTE 206
(Street)
BEDMINSTER NJ 07921
(City) (State) (Zip)
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 10% Owner
X Officer (give title below) Other (specify below)
Chief Scientific Officer
3. Date of Earliest Transaction (Month/Day/Year)
01/02/2018
4. If Amendment, Date of 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
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(1) 01/02/2018 M 68,361 A $1.02 210,158 D
Ordinary Shares(1) 01/02/2018 M 59,896 A $1.4 270,054 D
Ordinary Shares(1) 01/02/2018 S(2) 128,257 D $4.25(3) 141,797(4) D
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 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: 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) $1.02 01/02/2018 M 68,361 (5) 02/02/2025 Ordinary Shares(1) 68,361 $0.00 25,389 D
Stock Option (Right to Buy) $1.4 01/02/2018 M 59,896 (6) 02/01/2026 Ordinary Shares(1) 59,896 $0.00 65,104 D
Explanation of Responses:
1. The Ordinary Shares may be represented by American Depositary Shares, each of which represents one Ordinary Share.
2. Sales made pursuant to a Rule 10b5-1 trading plan.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.25 to $4.255, inclusive. The Reporting Person has provided the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of Ordinary Shares sold at each separate price.
4. Please see the section titled "Remarks" below for additional information.
5. On February 2, 2015, the Reporting Person was granted an option to purchase 93,750 Ordinary Shares under the Amarin Corporation plc 2011 Stock Incentive Plan. The shares subject to this option vests in 48 equal monthly installments on the last day of each month which started on February 28, 2015.
6. On February 1, 2016, the Reporting Person was granted an option to purchase 125,000 Ordinary Shares under the Amarin Corporation plc 2011 Stock Incentive Plan. The shares subject to this option vests in 48 equal monthly installments on the last day of each month which started on February 28, 2016.
Remarks:
As of the date of this Form 4, the Reporting Person owns or holds the right to acquire an aggregate of 2,821,810 Ordinary Shares of the Issuer in the form of Ordinary Shares, and stock options and Restricted Stock Units granted under the Amarin Corporation plc 2002 Stock Option Plan and the Amarin Corporation plc 2011 Stock Incentive Plan.
/s/ Steven B. Ketchum 01/04/2018
** 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 Number.
                                   POWER OF ATTORNEY
For Executing Forms 3, 4 and 5
Know all by these presents, that the undersigned hereby constitutes and appoints
each of John F. Thero, Joseph T. Kennedy and Michael W. Kalb, each acting
singly, his true and lawful attorney-in-fact from the date hereof to:
(1)	Execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer, director and/or 10% shareholder of Amarin Corporation plc (the
"Company"), forms and authentication documents for EDGAR Filing Access;
(2)	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer, director and/or 10% shareholder of the Company, Forms 3, 4 and 5
in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder;
(3)	do and perform any and all acts for and on behalf of the undersigned that
may be necessary or desirable to complete the execution of any such Form 3, 4 or
5, complete and execute any amendment or amendments thereto, and the timely
filing of such form with the United States Securities and Exchange Commission
and any other authority; and
(4)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be of benefit to,
in the best interests of, or legally required by, the undersigned, it being
understood that the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in his
discretion.
The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform all and every act and thing whatsoever requisite,
necessary, and proper to be done in the exercise of any of the rights and powers
herein granted, as fully for all intents and purposes as the such
attorney-in-fact might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or his substitute or substitutes, shall lawfully do or cause
to be done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving in such capacity at the request of the undersigned, are not assuming any
of the undersigned's responsibilities to comply with Section 16 of the
Securities Exchange Act of 1934, as amended.
This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.
By this Power of Attorney, the undersigned further revokes all previous powers
of attorney relating to the undersigned's obligations to file Forms 3, 4 and 5
in respect of the Company's securities under Section 16(a) of the Securities
Exchange Act of 1934 and related matters.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed this 3 day of January, 2018.

/s/ Steven B. Ketchum
Steven B. Ketchum