Exhibit 5.1
Nightstar Therapeutics plc
10 Midford Place
2nd Floor
London
W1T 5BJ
United Kingdom
18 March 2019
Dear Sir/Madam,
Nightstar Therapeutics plc: Registration Statement on FormS-8 – Exhibit 5.1
We act as English Law (as defined in paragraph 5.1(a)) legal advisers to Nightstar Therapeutics plc, a public limited company incorporated under the laws of England and Wales (the“Company” or“you”), in connection with the preparation and filing by the Company of the registration statement on FormS-8 to which this Opinion (as defined in paragraph 1.2 below) is attached as an exhibit (such registration statement, including the documents incorporated by reference therein being, the“Registration Statement”) filed with the United States Securities and Exchange Commission (the“SEC”) pursuant to the United States Securities Act of 1933, as amended (the“Securities Act”).
The Registration Statement relates to 2,574,384 ordinary shares of the Company, each having a nominal value of £0.01 (the“Shares”), issuable under the Nightstar Therapeutics plc 2017 Equity Incentive Plan adopted by the Company’s board of directors on 12 September 2017 and approved by the Company’s shareholders on 14 September 2017 (the“Plan”).
We have been asked to provide you with this English Law opinion (this“Opinion”) in connection with the filing of the Registration Statement.
In this Opinion, headings are for ease of reference only and shall not affect the interpretation of this Opinion and all references to paragraphs and schedules are to paragraphs and schedules of this Opinion unless the context provides otherwise.
For ease of reference, capitalised terms used in the Registration Statement shall have the same meaning in this Opinion, unless the context provides otherwise.
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