Exhibit 19.1

AMARIN CORPORATION PLC

STATEMENT OF COMPANY POLICY ON INSIDER TRADING AND DISCLOSURE

December 9, 2019

This memorandum sets forth the policy of Amarin Corporation plc and its subsidiaries (collectively, the “Company”) regarding trading in the Company’s securities as described below and the disclosure of information concerning the Company. This Statement of Company Policy on Insider Trading and Disclosure (the “Insider Trading Policy”) is designed to prevent insider trading or the appearance of impropriety, to satisfy the Company’s obligation to reasonably supervise the activities of Company personnel, and to help Company personnel avoid the severe consequences associated with violations of insider trading laws. It is your obligation to understand and comply with this Insider Trading Policy. The Company has designated its General Counsel as its insider trading compliance officer. Please contact the Company’s General Counsel at c/o Amarin Pharma, Inc., 440 Route 22 Bridgewater, NJ 08807, USA if you have any questions regarding the policy. The General Counsel may, at his discretion, designate the Company’s President as his substitute and the party responsible for administering the Insider Trading Policy and Trading Procedures (defined below).

This Insider Trading Policy is applicable to the Company’s directors, officers and employees, and continues to apply following the termination of any such individual’s service to or employment with the Company until any material, nonpublic information possessed by such individual has become public or is no longer material. The same restrictions that apply to you also apply to your spouse, significant other, child, parent or other family member, in each case, living in the same household, and to any investment fund, trust, retirement plan, partnership, corporation or other entity over which you have the ability to influence or direct investment decisions concerning securities. You are responsible for ensuring compliance with this Insider Trading Policy by all such persons affiliated with you.

All members of the Board of Directors and certain designated officers and employees also must comply with the Company’s Special Trading Procedures for Insiders (the “Trading Procedures”), which supplement and shall be deemed a part of this Insider Trading Policy. The officers and employees that are required to comply with the Trading Procedures shall be designated from time to time and notified of their status accordingly by the Company’s General Counsel.1 Generally, the Trading Procedures establish trading windows outside of which the persons covered by the Trading Procedures will be restricted from trading in the Company's securities and also

1 Per Procedures, only specified individuals will be subject to quarterly blackouts, pre-clearance procedures and other specified limitations.

require the pre-clearance of all transactions in the Company’s securities by such persons. You will be notified if you are required to comply with the Company’s Trading Procedures.

You are responsible for ensuring compliance with this Insider Trading Policy, including the Trading Procedures contained herein, by all of your Affiliated Persons.

In the event that you leave the Company for any reason, this Insider Trading Policy, including, if applicable, the Trading Procedures contained herein, will continue to apply to you and your Affiliated Persons until the later of: (1) the second trading day following the public release of earnings for the fiscal quarter in which you leave the Company or (2) the second trading day after any material nonpublic information known to you has become public or is no longer material.

It is generally illegal for any director, officer or employee of the Company to trade in the securities of the Company, whether for your account or for the account of another, while in the possession of material, nonpublic information about the Company. It is also generally illegal for any director, officer or employee of the Company to disclose material, nonpublic information about the Company to others who may trade on the basis of that information. These illegal activities are commonly referred to as “insider trading.”

Prohibited Activities

When you know or are in possession of material, nonpublic information about the Company, you generally are prohibited from the following activities:

As noted above, these prohibitions also apply to your spouse, significant other, child, parent or other family member, in each case, living in the same household; and any investment fund, trust, retirement plan, partnership, corporation or other entity over which you have the ability to influence or direct investment decisions concerning securities.

This Insider Trading Policy does not apply to an exercise of an employee stock option or a warrant when payment of the exercise price is made in cash. The policy does apply, however, to the use of outstanding Company securities to constitute part or all of the exercise price of an option or warrant, any sale of stock as part of a broker-assisted cashless exercise of an option or warrant, or any other market sale for the purpose of generating the cash needed to pay the exercise price of an option or warrant.

These prohibitions continue whenever and for as long as you know or are in possession of material, nonpublic information. Remember, anyone scrutinizing your transactions will be doing so after the fact, with the benefit of hindsight. As a practical matter, before engaging in any transaction, you should carefully consider how enforcement authorities and others might view the transaction in hindsight.

Definition of Material, Nonpublic Information

This Insider Trading Policy prohibits you from trading in the Company’s securities if you are in possession of information about the Company that is both “material” and “nonpublic.”

What is “Material” Information?

Information about the Company is “material” if it could reasonably be expected to affect the investment or voting decisions of a stockholder or investor, or if the disclosure of the information could reasonably be expected to significantly alter the total mix of information in the marketplace about the Company. In simple terms, material information is any type of information that could reasonably be expected to affect the market price of the Company’s securities. Both positive and negative information may be material. While it is not possible to identify all information that would be deemed “material,” the following items are types of information that should be considered carefully to determine whether they are material:

By including the list above, the Company does not mean to imply that each of these items above is per se material. Furthermore, the Company cannot create an exclusive list of events and information that have a higher probability of being considered material.

The Securities and Exchange Commission (the “SEC”) has stated that there is no fixed quantitative threshold amount for determining materiality, and that even very small quantitative changes can be qualitatively material if they would result in a movement in the price of the Company’s securities.

What is “Nonpublic” Information?

Material information is “nonpublic” if it has not been disseminated in a manner making it available to investors generally. To show that information is public, it is necessary to point to some fact that establishes that the information has become publicly available, such as the filing of a report with the SEC, the distribution of a press release through a widely disseminated news or wire service, or by other means that are reasonably designed to provide broad public access. Before a person who possesses material, nonpublic information can trade, there also must be adequate time for the market as a whole to absorb the information that has been disclosed. For the purposes of this Insider Trading Policy, information will be considered public after the close of trading on the second full trading day following the Company’s public release of the information.

For example, if the Company announces material information of which you are aware before trading begins on a Tuesday, the first time you can buy or sell Company securities is the opening of the market on Thursday. However, if the Company announces this material information after trading begins on that Tuesday, the first time that you can buy or sell Company securities is the opening of the market on Friday.

While the Company encourages its stockholders and potential investors to obtain as much information as possible about the Company, the Company believes that information should come from its publicly-filed SEC reports, press releases and external website or from a designated Company spokesperson, rather than from speculation or unauthorized disclosures by the Company’s directors, officers or employees. For this reason, the Company has designated certain members of management to respond to inquiries regarding the Company’s business and prospects. This centralization of communication is designed to ensure that the information the Company discloses is accurate and considered in light of previous disclosures. Formal announcements are generally reviewed by management and legal counsel before they are made public. Any communications that do not go through this review process create an increased risk to the Company, as well as to the individual responsible for the communication, of civil and criminal liability.

In addition, with the advent of the Internet, and the emergence of electronic bulletin boards and chat rooms, electronic discussions about companies and their business prospects have become common. Inappropriate communications disseminated on the Internet may pose an inherently greater risk due to the size of the audience they can reach. These forums have the potential to move a stock price significantly, and very rapidly – yet the information disseminated through electronic bulletin boards and chat rooms often is unreliable, and in some cases, may be deliberately false. The SEC has investigated and prosecuted a number of fraudulent schemes involving electronic bulletin boards and chat rooms. You may encounter information about the Company on the Internet that you believe is harmful or inaccurate, or other information that you believe is true or beneficial for the Company. Although you may have a natural tendency to deny or confirm such information on an electronic bulletin board or in a chat room, any sort of response, even if it presents accurate information, could be considered improper disclosure and could result in legal liability to you and/or to the Company.

The Company is committed to preventing inadvertent disclosures of material, nonpublic information, preventing unwitting participation in Internet-based securities fraud, and avoiding the appearance of impropriety by persons associated with the Company. Accordingly, this Insider Trading Policy prohibits you from discussing material, nonpublic information about the Company with anyone, including other employees, except as required in the performance of your duties. You should not under any circumstances provide information or discuss matters involving the Company with the news media, any broker-dealer, analyst, investment banker, investment advisor, institutional investment manager, investment company or stockholder, even if you are contacted directly by such persons, without express prior authorization. This restriction applies whether or not you identify yourself as associated with the Company. You should refer all such contact or inquiries to the Company’s General Counsel, c/o Amarin Pharma, Inc., 1430 Route 206, Suite 200, Bedminster, NJ 07921, USA This Insider Trading Policy also prohibits you from making any comments or postings about the Company on any Internet bulletin boards, chat rooms or websites, or responding to comments or postings about the Company’s business made by others. This restriction applies whether or not you identify yourself as associated with the Company.

Both the SEC and the national securities exchanges, through the Financial Industry Regulatory Authority (FINRA), investigate and are very effective at detecting insider trading. The SEC, together with the U.S. Attorneys, pursue insider trading violations vigorously. For instance, cases have been successfully prosecuted against trading by employees in foreign accounts, trading by family members and friends, and trading involving only a small number of shares.

The penalties for violating insider trading or tipping rules can be severe and include:

The Company and/or the supervisors of the person engaged in insider trading may also be required to pay civil penalties of up to the greater of $1,525,000 or three times the profit made or loss avoided, as well as criminal penalties of up to $25,000,000, and could under certain circumstances be subject to private lawsuits.

Violation of this Insider Trading Policy or any federal or state insider trading laws may subject the person violating such policy or laws to disciplinary action by the Company up to and including termination. The Company reserves the right to determine, in its own discretion and on the basis of the information available to it, whether this Insider Trading Policy has been violated. The Company may determine that specific conduct violates this Insider Trading Policy, whether or not the conduct also violates the law. It is not necessary for the Company to await the filing or conclusion of a civil or criminal action against the alleged violator before taking disciplinary action.

The Company also has strict policies relating to safeguarding the confidentiality of its internal, proprietary information. These policies include procedures regarding identifying, marking and safeguarding confidential information and employee confidentiality agreements. You should comply with these policies at all times.

If you violate this Insider Trading Policy or any federal or state laws governing insider trading, or know of any such violation by any director, officer or employee of the Company, you must report the violation immediately to the Company’s General Counsel, c/o Amarin Pharma,

Inc., 440 Route 22 Bridgewater, NJ 08807, USA. However, if the conduct in question involves the Company’s General Counsel, if you have reported such conduct to the Company’s General Counsel and do not believe that he has dealt with it properly, or if you do not feel that you can discuss the matter with him, you may raise the matter with the Company’s President and/or Chief Executive Officer, c/o Amarin Pharma, Inc., 440 Route 22 Bridgewater, NJ 08807, USA, or alternatively you may raise the matter (including if you wish on a confidential basis) with the Audit Committee pursuant to the Company’s Audit Committee Complaint Procedures.

The Company may at any time change this Insider Trading Policy or adopt such other policies or procedures which it considers appropriate to carry out the purposes of its policies regarding insider trading and the disclosure of Company information. Notice of any such change will be delivered to you by regular or electronic mail (or other delivery option used by the Company) by the Company. You will be deemed to have received, be bound by and agree to revisions of this Insider Trading Policy when such revisions have been delivered to you, unless you object to any revision in a written statement received by the Company’s General Counsel, within two (2) business days of such delivery.

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Your failure to observe this Insider Trading Policy could lead to significant legal problems, including fines and/or imprisonment, and could have other serious consequences, including the termination of your employment or service relationship with the Company.