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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 19, 2026

uniQure N.V.

(Exact Name of Registrant as Specified in Charter)

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Registrant’s telephone number, including area code: +31-20-240-6000

(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 (see General Instruction A.2. below):

☐     Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

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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).

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Emerging growth company ☐

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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. ☐

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Item 7.01                        Regulation FD Disclosure.

On June 19, 2026, uniQure N.V. (the “Company”) issued a press release announcing preliminary data on the first cohort in the Company’s Phase I/IIa clinical trial of AMT-260 for the treatment of refractory mesial temporal lobe epilepsy. A copy of the press release is being furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

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The information provided in this Item 7.01, including the accompanying Exhibit 99.1, shall be deemed “furnished” and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of such section, nor shall it be incorporated by reference in any filing made by the Company pursuant to the Securities Act of 1933, as amended, or the Exchange Act, regardless of the general incorporation language of such filing, except to the extent that such filing incorporates by reference any or all of such information by express reference.

Item 8.01                        Other Events.

On June 19, 2026, the Company announced preliminary data on the first cohort in the Company’s Phase I/IIa clinical trial of AMT-260 for the treatment of refractory mesial temporal lobe epilepsy. As of the May 29, 2026 data cutoff date, three of six patients in the first, low-dose cohort (1x10¹² gc/mL) achieved meaningful reductions in disabling seizures during months four through six of follow-up, ranging from a 79% to 100% decline from baseline. The remaining three patients in the low-dose cohort experienced variable changes in disabling seizures during months four through six of follow-up, ranging from a 33% decrease to a 36% increase compared to baseline. As of June 19, 2026, there have been no serious adverse events related to AMT-260 or the surgical procedure reported. All reported adverse events in the low dose cohort were classified as mild or moderate in severity, with the most common adverse event being headache (N=2). No immunosuppression was required.

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Item 9.01                        Financial Statements and Exhibits.

(d)            Exhibits.

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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.

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