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) November 17, 2025

 

JAZZ PHARMACEUTICALS PUBLIC LIMITED COMPANY

(Exact name of registrant as specified in its charter)

 

 

Ireland		001-33500		98-1032470
(State or Other Jurisdiction of Incorporation)		(Commission File No.)		(IRS Employer Identification No.)

Fifth Floor, Waterloo Exchange, Waterloo Road, Dublin 4, Ireland D04 E5W7

(Address of principal executive offices, including zip code)

011-353-1-634-7800

(Registrant’s telephone number, including area code)

 

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:

 

☐	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:

 

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Ordinary shares, nominal value $0.0001 per share		JAZZ		The Nasdaq Stock Market LLC

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.

On November 17, 2025, Jazz Pharmaceuticals plc issued a press release announcing positive top-line results from the Phase 3 HERIZON-GEA-01 trial evaluating Ziihera^® (zanidatamab-hrii) in combination with chemotherapy, and with or without the checkpoint inhibitor tislelizumab, as a first-line treatment for HER2-positive locally advanced or metastatic gastroesophageal adenocarcinoma. A copy of the press release is filed herewith as Exhibit 99.1 and incorporated herein by reference.

 

Item 9.01.

Financial Statements and Exhibits.

(d) Exhibits

 

Exhibit Number		Description
99.1		Press Release dated November 17, 2025.
104		104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

 

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.