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): June 14, 2024

Kiniksa Pharmaceuticals, Ltd.

(Exact name of Registrant as Specified in Its Charter)

Kiniksa Pharmaceuticals, Ltd.

Clarendon House

2 Church Street

Hamilton HM11, Bermuda

(808) 451-3453

(Address, zip code and telephone number, including area code of principal executive offices)

Kiniksa Pharmaceuticals Corp.

100 Hayden Avenue

Lexington, MA, 02421

(781) 431-9100

(Address, zip code and telephone number, including area code of agent for service)

N/A

(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. ¨

Item 8.01 Other Events.

As previously announced, Kiniksa Pharmaceuticals, Ltd. (the “Company” and, together with its consolidated subsidiaries, “Kiniksa”) intends to change the place of incorporation of Kiniksa’s principal holding company from Bermuda to the United Kingdom (the “Redomiciliation”). On June 14, 2024, the Supreme Court of Bermuda issued an order sanctioning the scheme of arrangement between the Company and its shareholders, which had been approved by the Company’s shareholders of record entitled to notice of and to vote at the Company’s special court-ordered meeting of shareholders on June 5, 2024. The Company expects the Redomiciliation to take effect on or around June 27, 2024.

Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements. All statements other than statements of historical facts contained in this Current Report on Form 8-K including statements with respect to the business of Kiniksa and the Redomiciliation are forward-looking statements.

In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “expect,” “plan,” “anticipate,” “could,” “intend,” “goal,” “design,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking statements contain these identifying words. The forward-looking statements in this Current Report on Form 8-K are only predictions. We have based these forward-looking statements largely on our current expectations. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including without limitation, the following: our ability to satisfy the other conditions to the Redomiciliation on the expected timeframe, or at all, our ability to realize the expected benefits from the Redomiciliation and the occurrence of unanticipated difficulties or costs in connection with the Redomiciliation.

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.