AMARIN CORP PLC\UK 10-Q

Item 5. Other Information No ne of our officers or directors, as defined in Rule 16a-1(f), adopted, modified, or terminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” as defined in Item 408 of Regulation S-K, during the three months ended March 31, 2026. 38 Item 6. Exhibits The following exhibits are incorporated by reference or filed or furnished as part of this report. Exhibit Number Description Incorporated by Reference Herein Form Date 10.1 Non-Employee Director Compensation Policy Current Report on Form 8-K as Exhibit 10.1 March 27, 2026 31.1 Certification of President and Chief Executive Officer (Principal Executive Officer) pursuant to Section 302 of Sarbanes-Oxley Act of 2002 Filed herewith 31.2 Certification of Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) pursuant to Section 302 of Sarbanes-Oxley Act of 2002 Filed herewith 32.1 Certification of President and Chief Executive Officer (Principal Executive Officer) and Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) pursuant to Section 906 of Sarbanes-Oxley Act of 2002 Filed herewith 101.SCH Inline XBRL Taxonomy Extension Schema Document Filed herewith 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document Filed herewith 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document Filed herewith 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document Filed herewith 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document Filed herewith 104 Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101.*) Filed herewith 39 SIGNA TURE Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. AMARIN CORPORATION PLC By: /s/ Aaron Berg Aaron Berg President and Chief Executive Officer (Principal Executive Officer) (On behalf of the Registrant) Date: April 29, 2026 AMARIN CORPORATION PLC By: /s/ Peter Fishman Peter Fishman Senior Vice President and Chief Financial Officer (Principal Financial and Accounting Officer) (On behalf of the Registrant) Date: April 29, 2026 40