AMARIN CORP PLC\UK — Director's Dealing 2011

Jul 14, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: AMARIN CORP PLC\UK (AMRN)
CIK: 0000897448
Period of Report: 2011-07-12

Reporting Person: SEDLACK STUART D (Senior Vice President)

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (right to buy)	$1.70	2020-04-20	Ordinary Shares (127500)		Direct
Stock Option (right to buy)	$7.19	2021-03-16	Ordinary Shares (200000)		Direct
Stock Option (right to buy)	$18.77	2021-05-23	Ordinary Shares (205000)		Direct

Footnotes

F1: The Ordinary Shares may be represented by American Depositary Shares, each of which currently represents one Ordinary Share.

F2: On April 20, 2010, the reporting person was granted an option under the Amarin Corporation plc 2002 Stock Option Plan. The stock option initially vested in four equal installments on each anniversary of such grant date. In December 2010, the Issuer's Board of Directors approved the acceleration of the vesting of this award by six months such that the option vests in four equal installments and will be fully vested on October 20, 2013.

F3: On March 16, 2011, the reporting person was granted an option under the Amarin Corporation plc 2002 Stock Option Plan. The stock option will vest in four equal installments on each anniversary of such grant date.

F4: On May 23, 2011, the reporting person was granted an option under the Amarin Corporation plc 2002 Stock Option Plan. The stock option will vest in four equal installments on each anniversary of such grant date.