UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 
CURRENT REPORT
Pursuant to Section 13 OR 15(d)
of the Securities Exchange Act of 1934
 
Date of Report (Date of Earliest Event Reported)
(Exact name of registrant as specified in its charter)
| (State or other jurisdiction of incorporation) | (Commission File Number) | (IRS Employer Identification No.) | 
 
(Address of principal executive offices)
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: None
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 2.02 | Results of Operations and Financial Condition. | 
Exhibit 99.1 to this Current Report on Form 8-K, which is hereby incorporated by reference into this Item 2.02, contains certain unaudited financial information regarding the financial performance of Mallinckrodt plc (“Mallinckrodt”) and/or certain of its subsidiaries as of the second quarter of fiscal year 2025 and certain estimated, unaudited financial information regarding the financial performance of Mallinckrodt and/or certain of its subsidiaries as of the third quarter of fiscal year 2025. The estimated, unaudited financial information is based on information currently available to management, including forecasted information, and may vary from Mallinckrodt's final reported financial information.
Exhibit 99.1 is a subset of the Disclosure Material (defined below) being provided to prospective lenders in connection with a potential term loan financing transaction, which is further described below.
The information included in this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.
| Item 7.01 | Regulation FD Disclosure. | 
In connection with a potential term loan financing transaction, certain subsidiaries of Mallinckrodt have committed to disclose publicly certain information to be provided to potential lenders (the “Disclosure Material”). The Disclosure Material, which is included as Exhibit 99.2 to this Current Report on Form 8-K and is hereby incorporated by reference into this Item 7.01, is being furnished, in part, to satisfy such commitments.
The information included in this Item 7.01, including Exhibit 99.2 shall not be deemed “filed” for purposes of Section 18 of the Exchange Act nor shall it be deemed incorporated by reference in any filing under the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.
| Item 9.01 | Financial Statements and Exhibits. | 
(d) Exhibits.
| Exhibit Number | Description | |
| 99.1 | Supplemental financial information, dated October 6, 2025. | |
| 99.2 | Disclosure Material, dated October 6, 2025. | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). | 
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| MALLINCKRODT PLC | ||
| Date: October 6, 2025 | By: | /s/ Mark Tyndall | 
| Name: | Mark Tyndall | |
| Title: | Executive Vice President and Chief Legal Officer & Corporate Secretary | |