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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Kennedy Joseph T
  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)
General Counsel
(Last)
(First)
(Middle)
C/O AMARIN PHARMA, INC., 1430 ROUTE 206
3. Date of Earliest Transaction (Month/Day/Year)
06/30/2018
(Street)

BEDMINSTER, NJ 07921
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 (1) 06/30/2018   M   47,187 (2) A (3) 65,621 (4) D  
Ordinary Shares (1) 06/30/2018   M   6,250 (5) A (3) 71,871 (4) D  
Ordinary Shares (1) 06/30/2018   F(6)   26,495 D $ 3.09 45,376 (4) D  
Ordinary Shares (1) 07/02/2018   S(7)   26,942 D $ 3.0048 (8) 18,434 (4) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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. SEC 1474 (9-02)

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
Restricted Stock Units (9) $ 0 06/30/2018   M     47,187   (2)   (3) Ordinary Shares (1) 47,187 $ 0 188,750 D  
Restricted Stock Units (9) $ 0 06/30/2018   M     6,250   (5)   (3) Ordinary Shares (1) 6,250 $ 0 25,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Kennedy Joseph T
C/O AMARIN PHARMA, INC.
1430 ROUTE 206
BEDMINSTER, NJ 07921
      General Counsel  

Signatures

 /s/ Joseph T. Kennedy   07/03/2018
**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) The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.
(2) As previously reported on July 8, 2015, the Reporting Person was granted 755,000 Restricted Stock Units ("RSUs") under the Amarin Corporation plc 2011 Stock Incentive Plan (the "Plan"). These RSUs vest in 16 equal quarterly installments. The twelfth vesting event occurred on June 30, 2018.
(3) Not applicable.
(4) Please see the section titled "Remarks" below for additional information.
(5) As previously reported on October 6, 2015, the Reporting Person was granted 100,000 RSUs under the Plan. These RSUs vest in 16 equal quarterly installments. The twelfth vesting event occurred on June 30, 2018.
(6) Represents withholding by the Issuer of shares in respect of tax liability incident to the vesting of a security issued in accordance with Rule 16b-3, and not a market sale of securities.
(7) Sales made pursuant to a 10b5-1 trading plan dated December 9, 2016.
(8) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.92 to $3.09, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff at the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.
(9) Each RSU represents a contingent right to receive one Ordinary Share or cash in lieu thereof at the Issuer's discretion.
 
Remarks:
In the case of a Change of Control (as defined in the Plan), the grants described in this Form 4 vest in full.  As of the date of this Form 4, the Reporting Persons owns or holds the right to acquire an aggregate of 3,367,350 Ordinary Shares of the Issuer in the form of Ordinary Shares, stock options and Restricted Stock Units granted under the Amarin Corporation 2002 Stock Option Plan and the Plan.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.