AMRN

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 1, 2022

Amarin Corporation plc

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: +353 (0) 1 6699 020

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Jason Marks, Executive Vice President, Chief Legal and Compliance Officer (and Corporate Secretary) of Amarin Corporation plc (the “Company”) is resigning as an officer of the Company effective December 6, 2022 and departing from the Company following a transition period. A search is underway at the Company for a new general counsel. Mr. Marks has confirmed his commitment to a smooth transition of responsibilities. Mr. Marks is leaving the Company to pursue other interests.

In connection with the foregoing, on December 6, 2022, the Company entered into a transition agreement (the “Transition Agreement”) with Mr. Marks. Effective immediately, Mr. Marks will transition to the role of Senior Advisor and he is expected to serve in that capacity until February 28, 2023 (the “Transition Period”). Following the Transition Period, and subject to the terms of the Transition Agreement, Mr. Mark’s will be entitled to payments and benefits pursuant to the terms of the Company’s Executive Severance and Change of Control Plan, effective as of January 28, 2021.

The foregoing description of the Transition Agreement is not complete and is qualified in its entirety by reference to the Transition Agreement, which will be filed as an exhibit to the Company’s Annual Report on Form 10-K for the period ending December 31, 2022.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.