MNKKQ / Mallinckrodt Plc - Arquivamentos da SEC, Relatório Anual, Declaração de Procuração

Mallinckrodt Plc
US ˙ OTC
ESTE SÍMBOLO NÃO ESTÁ MAIS ATIVO

Estatísticas Básicas
LEI 549300LMDE3RUP8Z3L60
CIK 1567892
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Mallinckrodt Plc
SEC Filings (Chronological Order)
Esta página fornece uma lista completa e cronológica de Arquivamentos da SEC, excluindo os arquivamentos de propriedade que fornecemos em outro lugar.
June 3, 2026 8-K

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 2, 2026 Keenova Therapeutic

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 2, 2026 Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission F

May 29, 2026 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Keenova Therapeutics plc (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 (State or other jurisdiction of incorporation) (Commission File Number) College Business & Technology Park, Cruiserath, Blanchardstown, Dublin 15, Ireland (Address of principal executive offic

May 29, 2026 EX-1.01

Conflict Minerals Report

Exhibit 1.01 Conflict Minerals Report Introduction Keenova Therapeutics plc, formerly Mallinckrodt plc, is a global business consisting of multiple wholly owned subsidiaries (collectively, “Keenova” or “the Company”) that develop, manufacture and commercialize a portfolio of branded therapeutics for the treatment of rare or unaddressed diseases in the specialty areas of rheumatology, ophthalmology

May 12, 2026 EX-10.19

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF PERFORMANCE RESTRICTED UNIT AWARD

Exhibit 10.19 CEO PSU Award Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF PERFORMANCE RESTRICTED UNIT AWARD PERFORMANCE RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.Grant of Performance Restricted Units. Keenova Therapeutics plc (the “Company”) has granted to you a target number of [] Performance Restricted Units subject to the pr

May 12, 2026 EX-10.6

EMPLOYMENT AGREEMENT

Exhibit 10.6 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on September 7, 2025 (the “Effective Date”) by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Dr. Marek Honczarenko (the “Executive”) (collectively referred to as “Parties” or individually referred to as a “Party”). WHEREAS, the Com

May 12, 2026 EX-99.2

KEENOVA THERAPEUTICS PLC

Exhibit 99.2 KEENOVA THERAPEUTICS PLC The following unaudited non-GAAP pro forma combined net sales and adjusted EBITDA are derived from the historical consolidated financial statements of Keenova Therapeutics plc (formerly known as Mallinckrodt plc, “Keenova” or the “Company”) and Endo LP (formerly known as Endo, Inc., “Endo”). This supplemental information contains “non-GAAP“ financial measures

May 12, 2026 EX-10.18

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS RESTRICTED UNIT AWARD

Exhibit 10.18 CEO RSU Award Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF RESTRICTED UNIT AWARD RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.Grant of Restricted Units. Keenova Therapeutics plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. [] of the Restric

May 12, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-35803 Keenova Therapeutics

May 12, 2026 EX-4.7

SIXTH SUPPLEMENTAL INDENTURE

Exhibit 4.7 SIXTH SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of March 5, 2026, among Mallinckrodt Finance Management Ireland Limited, a private limited company under the laws of Ireland (company registration number 572534) (“MFMIL”) (the “Guaranteeing Subsidiary”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.), a Delaware limited partners

May 12, 2026 EX-10.8

ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT

Exhibit 10.8 ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT THIS AGREEMENT (this “Agreement”) is hereby effective as of May 10, 2024 (the “Effective Date”), by and between Endo USA, Inc. (the “Company”), a wholly-owned subsidiary of Endo, Inc. (“Endo”), and Mark Bradley (“Executive”) (hereinafter collectively referred to as “the parties”). In consideration of the respective agreements of the partie

May 12, 2026 EX-10.14

Mallinckrodt Pharmaceuticals2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award

Exhibit 10.14 [Director Form] Mallinckrodt Pharmaceuticals2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Company will hol

May 12, 2026 EX-10.11

First Lien Intercreditor Agreement Supplement

Exhibit 10.11 First Lien Intercreditor Agreement Supplement SUPPLEMENT NO. 6 dated as of March 13, 2026 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo LP (f/k/a Endo, Inc.) (“Holdings”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.) (“Borrower”), the other Grantors party thereto, Goldma

May 12, 2026 8-K

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): May 12, 2026 Keenova Therapeutics

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): May 12, 2026 Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission Fi

May 12, 2026 EX-10.12

ENDO, INC. STOCK AWARD NOTICE UNDER THE 2024 STOCK INCENTIVE PLAN (EMPLOYEE FORM)

Exhibit 10.12 ENDO, INC. STOCK AWARD NOTICE UNDER THE 2024 STOCK INCENTIVE PLAN (EMPLOYEE FORM) This Stock Award Notice (this “Award Notice”) is being provided to the participant (the “Participant”) by Endo, Inc. (the “Company”) as of the date of grant set forth below (the “Date of Grant”). Capitalized terms not defined herein shall have the meanings ascribed to them in the version of the Endo, In

May 12, 2026 EX-10.4

ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT

Exhibit 10.4 ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT THIS AGREEMENT (this “Agreement”) is hereby effective as of (the “Effective Date”), by and between Endo USA, Inc. (the “Company”), a wholly-owned subsidiary of Endo, Inc. (“Endo”), and (“Executive”) (hereinafter collectively referred to as “the parties”). In consideration of the respective agreements of the parties contained herein, it is

May 12, 2026 EX-99.1

Keenova Reports First Quarter 2026 Financial Results Strong First-Quarter Performance Driven by Acthar® Gel1 and XIAFLEX®2 Pipeline Development, Synergy Plan Remain on Track Reaffirms 2026 Net Sales Guidance of $1.94 Billion to $2.00 Billion and Adju

Exhibit 99.1 FOR IMMEDIATE RELEASE Keenova Reports First Quarter 2026 Financial Results Strong First-Quarter Performance Driven by Acthar® Gel1 and XIAFLEX®2 Pipeline Development, Synergy Plan Remain on Track Reaffirms 2026 Net Sales Guidance of $1.94 Billion to $2.00 Billion and Adjusted EBITDA Guidance of $730 Million to $760 Million Conference Call and Webcast Today at 8:00 a.m. ET First Quarte

May 12, 2026 EX-10.1

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS RESTRICTED UNIT AWARD

Exhibit 10.1 Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF RESTRICTED UNIT AWARD RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.Grant of Restricted Units. Keenova Therapeutics plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Company will hold the Restri

May 12, 2026 EX-4.8

SEVENTH SUPPLEMENTAL INDENTURE

Exhibit 4.8 SEVENTH SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of March 13, 2026, among Ozantri Limited, a private limited company under the laws of Ireland (company registration number 809730) (the “Guaranteeing Subsidiary”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.), a Delaware limited partnership (the “Issuer”), KT Finance Inc., a

May 12, 2026 EX-10.5

EMPLOYMENT AGREEMENT

Exhibit 10.5 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on August 1, 2025 (the “Effective Date”) by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Christiana Stamoulis (the “Executive”) (collectively referred to as “Parties” or individually referred to as a “Party”). WHEREAS, the Company

May 12, 2026 EX-10.7

FIRST AMENDED AND RESTATED EMPLOYMENT AGREEMENT

EXHIBIT 10.7 FIRST AMENDED AND RESTATED EMPLOYMENT AGREEMENT This FIRST AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on February 28, 2024 (the “Effective Date”) by and between Mallinckrodt Pharmaceuticals Ireland Ltd., an Irish limited liability company, or any successor thereto (the “Company”), and Paul O’Neill (the “Executive”) (collectively referred to as “Partie

May 12, 2026 EX-10.17

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS RESTRICTED UNIT AWARD

Exhibit 10.17 Director RSU Award Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF RESTRICTED UNIT AWARD RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.Grant of Restricted Units. Keenova Therapeutics plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Company

May 12, 2026 EX-10.13

ENDO, INC. PERFORMANCE AWARD NOTICE UNDER THE 2024 STOCK INCENTIVE PLAN

Exhibit 10.13 ENDO, INC. PERFORMANCE AWARD NOTICE UNDER THE 2024 STOCK INCENTIVE PLAN This Performance Award Notice, which shall include the Performance Award Grant Notice and the Terms and Conditions (collectively, the “Award Notice”) is being provided to the participant (the “Participant”) by Endo, Inc. (the “Company”) as of the date of grant set forth below (the “Date of Grant”). Capitalized te

May 12, 2026 EX-10.16

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS RESTRICTED UNIT AWARD

Exhibit 10.16 [CFO Inducement Grant] Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF RESTRICTED UNIT AWARD RESTRICTED UNIT AWARD (“Award”) granted on September 23, 2025 (the “Grant Date”). 1.Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you 91,007 Restricted Units subject to the provisions of these Terms and Conditions and the P

May 12, 2026 EX-10.2

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF PERFORMANCE RESTRICTED UNIT AWARD

Exhibit 10.2 Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF PERFORMANCE RESTRICTED UNIT AWARD PERFORMANCE RESTRICTED UNIT AWARD (“Award”) granted on , (the “Grant Date”). 1.Grant of Performance Restricted Units. Keenova Therapeutics plc (the “Company”) has granted to you a target number of [] Performance Restricted Units subject to the provisions of these T

May 12, 2026 EX-10.3

SECOND AMENDED AND RESTATED EMPLOYMENT AGREEMENT

Exhibit 10.3 SECOND AMENDED AND RESTATED EMPLOYMENT AGREEMENT This SECOND AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on [ · ] (the “Effective Date”) by and between [ST Shared Services LLC],1 a Delaware limited liability company, or any successor thereto (the “Company”), and [ · ] (the “Executive”) (collectively referred to as “Parties” or individually referred to

May 12, 2026 EX-10.10

First Lien Intercreditor Agreement Supplement

Exhibit 10.10 First Lien Intercreditor Agreement Supplement SUPPLEMENT NO. 5 dated as of March 5, 2026 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo LP (f/k/a Endo, Inc.) (“Holdings”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.) (“Borrower”), the other Grantors party thereto, Goldman

May 12, 2026 EX-10.15

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions Restricted Unit Award

Exhibit 10.15 [CEO Inducement Grant] Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on August 14, 2025 (the “Grant Date”). 1.Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you 65,005 Restricted Units subject to the provisions of these Terms and Conditions and the Plan

April 27, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 27, 2026 ARS

ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 001-35803 Keenova Therapeutics plc

April 15, 2026 EX-3.2

Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION KEENOVA THERAPEUTICS PUBLIC LIMITED COMPANY (as amended by Special Resolution passed on 8 October 2025 with effect from 11 November 2025) Companies Act 2014

Exhibit 3.2 Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION of KEENOVA THERAPEUTICS PUBLIC LIMITED COMPANY (as amended by Special Resolution passed on 8 October 2025 with effect from 11 November 2025) DUBLIN Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION of KEENOVA THERAPEUTICS PUBLIC LIMITED COMPANY (as ame

April 15, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 001-35803 Keenova Therapeutics plc

April 15, 2026 EX-4.1

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 4.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the share capital of Keenova Therapeutics plc (“Keenova” or the “Company”) is a summary. This summary does not purport to be complete and is qualified in its entirety by reference to the Irish Companies Act 2014 (the “Companies Act”) and the c

April 15, 2026 EX-21.1

SUBSIDIARIES OF KEENOVA THERAPEUTICS PLC

Exhibit 21.1 SUBSIDIARIES OF KEENOVA THERAPEUTICS PLC The following is a list of subsidiaries of Keenova Therapeutics plc as of December 31, 2025. Name of Subsidiary Jurisdiction of Incorporation/Organization BP USA Holdings, LLC United States Cache Holdings Limited Bermuda Carnforth Limited Bermuda CPEC, LLC United States EFHI GP Limited Ireland ELP 2025 GP Limited Ireland Endo Biologics Limited

April 15, 2026 EX-10.47

Exhibit 10.47 Execution Version THIRD AMENDMENT THIRD AMENDMENT, dated as of November 3, 2025 (this “Amendment”), to the Credit Agreement, dated as of April 23, 2024 (as amended by that certain First Amendment, dated as of October 29, 2024, and that

exhibit1047annex-endoxth Exhibit 10.47 Execution Version THIRD AMENDMENT THIRD AMENDMENT, dated as of November 3, 2025 (this “Amendment”), to the Credit Agreement, dated as of April 23, 2024 (as amended by that certain First Amendment, dated as of October 29, 2024, and that certain Second Amendment (Technical Amendment), dated as of July 17, 2025 and as further amended, restated, amended and resta

April 15, 2026 EX-4.7

FIFTH SUPPLEMENTAL INDENTURE

Exhibit 4.7 Execution Version FIFTH SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of December 17, 2025, among Keenova International Holdings LLC, a Delaware limited liability company (“Keenova International”), and Sonorant Therapeutics Limited, a private limited company under the laws of Ireland (company registration number 648696) (“Sonorant Therapeutics”

April 15, 2026 EX-19.1

2

Exhibit 19.1 Effective Date: February 20, 2026 Table of Contents Section 1: Statement of Policy 3 Section 2: Purpose of this Policy 3 Section 3: Policy Owner and Statement of Responsibility 3 Section 4: Procedures for all Covered Persons 3 Section 5: Special Procedures for the Window Group 6 Section 6: Post-Termination Transactions 7 Section 7: Exceptions 7 Section 8: Consequences of Violating the

April 15, 2026 EX-10.51

First Lien Intercreditor Agreement Joinder

Exhibit 10.51 Execution Version First Lien Intercreditor Agreement Joinder SUPPLEMENT NO. 4 dated as of December 17, 2025 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo LP (f/k/a Endo, Inc.) (“Holdings”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.) (“Borrower”), the other Grantors par

April 13, 2026 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.   )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 1, 2026 NT 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): ☒ Form 10-K ☐ ☐ Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2025 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report on Form 10-Q For the Transitio

March 31, 2026 EX-99.1

Keenova Announces Unaudited Fourth Quarter 2025 Financial Results Robust Fourth-Quarter Performance Driven by Strength in Acthar® Gel1 and XIAFLEX®2 Financial and Operational Performance Exceeded Expectations as Company Completed Transition into Bran

Exhibit 99.1 NOT FOR IMMEDIATE RELEASE Keenova Announces Unaudited Fourth Quarter 2025 Financial Results Robust Fourth-Quarter Performance Driven by Strength in Acthar® Gel1 and XIAFLEX®2 Financial and Operational Performance Exceeded Expectations as Company Completed Transition into Branded Therapeutics Company Hammer Toe Trial Meets Primary Safety Endpoint and Secondary, Exploratory Efficacy End

March 31, 2026 8-K

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): March 31, 2026 Keenova Therapeuti

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): March 31, 2026 Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission

March 31, 2026 EX-99.2

KEENOVA THERAPEUTICS PLC

Exhibit 99.2 KEENOVA THERAPEUTICS PLC The following unaudited non-GAAP pro forma combined net sales and adjusted EBITDA are derived from the historical consolidated financial statements of Keenova Therapeutics plc (formerly known as Mallinckrodt plc, “Keenova” or the “Company”), Endo LP (formerly known as Endo, Inc., “Endo”) and Endo International plc (“Endo’s Predecessor”). Such unaudited financi

February 24, 2026 8-K

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): February 23, 2026 Keenova Therap

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): February 23, 2026 Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commiss

February 24, 2026 EX-10.1

FOURTH AMENDED AND RESTATED EMPLOYMENT AGREEMENT

Exhibit 10.1 FOURTH AMENDED AND RESTATED EMPLOYMENT AGREEMENT This FOURTH AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”), is entered into on February 23, 2026 (the “Effective Date”), by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Sigurdur Olafsson (the “Executive”). WHEREAS, the Executive is currently a party

February 20, 2026 8-K

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): February 18, 2026 Keenova Therap

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): February 18, 2026 Keenova Therapeutics plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commiss

February 20, 2026 EX-10.2

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Performance Restricted Unit Award

Exhibit 10.2 Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Performance Restricted Unit Award PERFORMANCE RESTRICTED UNIT AWARD (“Award”) granted on , (the “Grant Date”). 1.             Grant of Performance Restricted Units. Keenova Therapeutics plc (the “Company”) has granted to you a target number of [] Performance Restricted Units subject to the provisio

February 20, 2026 EX-10.1

Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions Restricted Unit Award

Exhibit 10.1 Keenova Therapeutics plc 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.            Grant of Restricted Units. Keenova Therapeutics plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Company will hol

November 10, 2025 EX-4.3

SECOND SUPPLEMENTAL INDENTURE

Exhibit 4.3 SECOND SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of June 30, 2025, among Par Health USA, LLC, a Delaware limited liability company, PH Health Holdings Limited, a private company limited by shares incorporated under the laws of Ireland (company registration number 791346) and PH Health Limited, a private company limited by shares incorporate

November 10, 2025 EX-2.1

SEPARATION AGREEMENT BY AND BETWEEN MALLINCKRODT PLC PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS

Exhibit 2.1 SEPARATION AGREEMENT BY AND BETWEEN MALLINCKRODT PLC AND PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 2 1.1 Certain Defined Terms 2 1.2 Additional Defined Terms 16 ARTICLE II THE SEPARATION 18 2.1 Transfer of Assets and Assumption of Liabilities 18 2.2 SpinCo Assets; Parent Assets 21 2.3 SpinCo Liabilities; Parent Liabilities 24 2.4 Approv

November 10, 2025 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.2 Disclaimer Ernst & Young LLP (EY) prepared the attached Report only for Mallinckrodt Plc (the "Client") pursuant to an agreement solely between EY and Client. EY did not perform its services on behalf of or to serve the needs of any other person or entity. Accordingly, EY expressly disclaims any duties or obligations to any other person or entity based on its use of the attached Repor

November 10, 2025 EX-10.12

EMPLOYMENT AGREEMENT

Exhibit 10.12 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on September 7, 2025 (the “Effective Date”) by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Dr. Marek Honczarenko (the “Executive”) (collectively referred to as “Parties” or individually referred to as a “Party”). WHEREAS, the Co

November 10, 2025 EX-10.32

First Lien Intercreditor Agreement Joinder

Exhibit 10.32 First Lien Intercreditor Agreement Joinder SUPPLEMENT NO. 2 dated as of August 1, 2025 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo LP (f/k/a Endo, Inc.) (“Holdings”), Endo Finance Holdings, Inc. (“Borrower”), the other Grantors party thereto, Goldman Sachs Bank USA, as collateral agen

November 10, 2025 EX-10.31

First Lien Intercreditor Agreement Joinder

Exhibit 10.31 First Lien Intercreditor Agreement Joinder SUPPLEMENT NO. 1 dated as of June 30, 2025 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo, Inc. (“Holdings”), Endo Finance Holdings, Inc. (“Borrower”), the other Grantors party thereto, Goldman Sachs Bank USA, as collateral agent for the Credit

November 10, 2025 EX-10.11

Consulting Services

Exhibit 10.11 Endo, Inc. 9 Great Valley Parkway Malvern, PA 19355 July 29, 2025 Scott Hirsch [email protected] Re: Noncompetition and Consulting Agreement Dear Scott: Reference is hereby made to that certain letter between you and Endo, Inc. (the “Company”) dated as of August 26, 2024, as amended by that certain letter between you and the Company dated as of January 6, 2025, and that certain l

November 10, 2025 EX-4.4

THIRD SUPPLEMENTAL INDENTURE

Exhibit 4.4 THIRD SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of August 1, 2025, among Infacare Pharmaceutical Corporation, a Delaware corporation, INO Therapeutics LLC, a Delaware limited liability company, Ludlow LLC, a Massachusetts limited liability company, MAK LLC, a Delaware limited liability company, Mallinckrodt ARD Holdings Inc, a Delaware corp

November 10, 2025 EX-10.13

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS RESTRICTED UNIT AWARD

Exhibit 10.13 Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF RESTRICTED UNIT AWARD RESTRICTED UNIT AWARD (“Award”) granted on September 23, 2025 (the “Grant Date”). 1.Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you 91,007 Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Company will h

November 10, 2025 EX-10.33

First Lien Intercreditor Agreement Joinder

Exhibit 10.33 First Lien Intercreditor Agreement Joinder SUPPLEMENT NO. 3 dated as of September 26, 2025 (this “Supplement”), to the FIRST LIEN INTERCREDITOR AGREEMENT dated as of April 23, 2024 (the “First Lien Intercreditor Agreement”), among Endo LP (f/k/a Endo, Inc.) (“Holdings”), Endo Finance Holdings LP (f/k/a Endo Finance Holdings, Inc.) (“Borrower”), the other Grantors party thereto, Goldm

November 10, 2025 EX-10.5

AMENDED AND RESTATED MULTI-TENANT LEASE AGREEMENT

Exhibit 10.5 AMENDED AND RESTATED MULTI-TENANT LEASE AGREEMENT THIS AMENDED AND RESTATED MULTI-TENANT LEASE AGREEMENT (this “Lease”) is entered into as of November 1, 2025 (the “Effective Date”), between Mallinckrodt LLC, a Delaware limited liability company (“Landlord”), and ST Shared Services LLC, a Delaware limited liability company (“Tenant”). W I TN E S S E T H: WHEREAS, Landlord is the owner

November 10, 2025 EX-10.6

CVR TERMINATION AGREEMENT

Exhibit 10.6 EXECUTION VERSION CVR TERMINATION AGREEMENT This CVR TERMINATION AGREEMENT (this “Agreement”) is entered into as of November 10, 2025, by and among Opioid Master Disbursement Trust II, the master disbursement trust referred to in the Plan (as defined in the CVR Agreement (as defined below)) as MDT II (the “Holder”) and Mallinckrodt plc, a public limited company incorporated in Ireland

November 10, 2025 EX-4.5

FOURTH SUPPLEMENTAL INDENTURE

Exhibit 4.5 FOURTH SUPPLEMENTAL INDENTURE Supplemental Indenture (this “Supplemental Indenture”), dated as of September 26, 2025, among KT Finance Inc., a Delaware corporation (the “Co-Issuer”), and EFHI GP Limited, a private limited company under the laws of Ireland (company registration number 794506) (“EFHI GP”) (Co-Issuer and EFHI GP, each, a “Guaranteeing Subsidiary” and together, the “Guaran

November 10, 2025 EX-10.1

TRANSITION SERVICES AGREEMENT BY AND BETWEEN MALLINCKRODT PLC PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS

Exhibit 10.1 TRANSITION SERVICES AGREEMENT BY AND BETWEEN MALLINCKRODT PLC AND PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS Page Article I DEFINITIONS 2 Section 1.01. Definitions 2 Article II SERVICES 5 Section 2.01. Services 5 Section 2.02. Performance of Services 6 Section 2.03. Charges for Services 7 Section 2.04. Reimbursement for Out-of-Pocket Costs and Expenses 7 Section

November 10, 2025 8-K

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 November 10, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt pl

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 November 10, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File

November 10, 2025 EX-10.3

EMPLOYEE MATTERS AGREEMENT BY AND BETWEEN MALLINCKRODT PLC PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS

Exhibit 10.3 EMPLOYEE MATTERS AGREEMENT BY AND BETWEEN MALLINCKRODT PLC AND PAR HEALTH, INC. DATED AS OF NOVEMBER 10, 2025 TABLE OF CONTENTS Article I DEFINITIONS 1 Section 1.01. Definitions 1 Article II GENERAL PRINCIPLES FOR ALLOCATION OF LIABILITIES 5 Section 2.01. General Principles 5 Section 2.02. Benefit Continuation; Service Credit 7 Section 2.03. Adoption and Transfer and Assumption of Ben

November 10, 2025 EX-99.1

Mallinckrodt Completes Spin-Off of Par Health, Introduces Keenova Therapeutics Keenova Focused on Advancing Therapies to Address Unmet Patient Needs Company Intends to Pursue Public Equity Listing in 2026

Exhibit 99.1 Mallinckrodt Completes Spin-Off of Par Health, Introduces Keenova Therapeutics Keenova Focused on Advancing Therapies to Address Unmet Patient Needs Company Intends to Pursue Public Equity Listing in 2026 DUBLIN, Nov. 10, 2025 - Mallinckrodt plc ("Mallinckrodt") today announced the completion of the planned spin-off of its Par Health generic pharmaceuticals and sterile injectables bus

November 10, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 26, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 26, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-35803 Mallinckrodt plc

November 10, 2025 EX-99.1

Mallinckrodt Reports Third Quarter 2025 Financial Results Delivers Third Quarter Net Sales of $753.1 Million, Driven by Acthar® Gel (repository corticotropin injection) Growth and the Inclusion of Two Months of Endo Product Net Sales Expects Fourth Q

Exhibit 99.1 Mallinckrodt Reports Third Quarter 2025 Financial Results Delivers Third Quarter Net Sales of $753.1 Million, Driven by Acthar® Gel (repository corticotropin injection) Growth and the Inclusion of Two Months of Endo Product Net Sales Expects Fourth Quarter 2025 Net Sales of $485 Million to $505 Million and Adjusted EBITDA of $155 Million to $165 Million for Keenova Raises Full-Year Ac

November 10, 2025 8-K

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 10, 2025 Mallinckrodt pl

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 10, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File

November 10, 2025 EX-10.2

TAX MATTERS AGREEMENT by and between MALLINCKRODT PLC PAR HEALTH, INC. Dated as of November 10, 2025 TABLE OF CONTENTS

Exhibit 10.2 TAX MATTERS AGREEMENT by and between MALLINCKRODT PLC and PAR HEALTH, INC. Dated as of November 10, 2025 TABLE OF CONTENTS Page Article 1. Definition of Terms 2 Article 2. Allocation of Tax Liabilities 11 Section 2.01 General Rules 11 Section 2.02 Allocation of Federal Taxes 12 Section 2.03 Allocation of State Taxes 12 Section 2.04 Allocation of Foreign Taxes 12 Section 2.05 Separatio

November 10, 2025 EX-10.4

MANUFACTURING AND SUPPLY AGREEMENT BY AND BETWEEN PAR HEALTH USA, LLC ENDO BIOLOGICS LIMITED DATED AS OF 10 NOVEMBER 2025

Exhibit 10.4 Execution Version MANUFACTURING AND SUPPLY AGREEMENT BY AND BETWEEN PAR HEALTH USA, LLC AND ENDO BIOLOGICS LIMITED DATED AS OF 10 NOVEMBER 2025 1 THIS MANUFACTURING AND SUPPLY AGREEMENT (this “Agreement”) is hereby entered into and effective as of 10 November 2025 (the “Effective Date”) by and between: (a) PAR HEALTH USA, LLC, a company existing under the Laws of Delaware and with a r

November 10, 2025 EX-10.30

SECOND AMENDMENT (TECHNICAL AMENDMENT) SECOND AMENDMENT (TECHNICAL AMENDMENT), dated as of July 17, 2025 (this “Amendment”), to the Credit Agreement, dated as of April 23, 2024 (as amended by that certain First Amendment, dated as of October 29, 2024

mnkexhibit1030 SECOND AMENDMENT (TECHNICAL AMENDMENT) SECOND AMENDMENT (TECHNICAL AMENDMENT), dated as of July 17, 2025 (this “Amendment”), to the Credit Agreement, dated as of April 23, 2024 (as amended by that certain First Amendment, dated as of October 29, 2024 and as further amended, restated, amended and restated, supplemented or otherwise modified from time to time prior to the date hereof, the “Credit Agreement”, and as amended by this Amendment, the “Amended Credit Agreement”), among Endo, Inc.

November 10, 2025 EX-10.34

ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT

Exhibit 10.34 ENDO USA, INC. EXECUTIVE EMPLOYMENT AGREEMENT THIS AGREEMENT (this “Agreement”) is hereby effective as of (the “Effective Date”), by and between Endo USA, Inc. (the “Company”), a wholly-owned subsidiary of Endo, Inc. (“Endo”), and (“Executive”) (hereinafter collectively referred to as “the parties”). In consideration of the respective agreements of the parties contained herein, it is

November 7, 2025 8-K

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 7, 2025 Mallinckrodt plc

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 7, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File N

October 30, 2025 EX-99.2

INDEX TO FINANCIAL STATEMENTS

Exhibit 99.2 INDEX TO FINANCIAL STATEMENTS Page Mallinckrodt Specialty Generics Business Condensed Combined Financial Statements (Unaudited) F-1 Condensed Combined Statements of Operations (Unaudited) F-2 Condensed Combined Statements of Comprehensive Operations (Unaudited) F-3 Condensed Combined Balance Sheets (Unaudited) F-4 Condensed Combined Statements of Cash Flows (Unaudited) F-5 Condensed C

October 30, 2025 EX-99.1

Information Statement dated October 30, 2025 PROMPT ACTION IS REQUIRED BY ALL BROKERS AND SHAREHOLDERS PLEASE COMPLETE YOUR CERTIFICATION FORM AS SOON AS POSSIBLE—IF MALLINCKRODT HAS NOT RECEIVED SUFFICIENT VALID CERTIFICATION FORMS FROM QUALIFIED SH

Exhibit 99.1 Information Statement dated October 30, 2025 PROMPT ACTION IS REQUIRED BY ALL BROKERS AND SHAREHOLDERS PLEASE COMPLETE YOUR CERTIFICATION FORM AS SOON AS POSSIBLE—IF MALLINCKRODT HAS NOT RECEIVED SUFFICIENT VALID CERTIFICATION FORMS FROM QUALIFIED SHAREHOLDERS BY NOVEMBER 7, 2025, AT 5:30 P.M. (EASTERN TIME IN THE UNITED STATES) (OR SUCH OTHER DATE AS MAY BE DETERMINED BY THE MALLINCK

October 30, 2025 8-K

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 October 30, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 October 30, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File N

October 24, 2025 EX-99.1

-2- amount of cash for each Mallinckrodt Preferred Share that the Board determines is equal in value to the Par Health Common Stock allocated to Qualified Shareholders for each Mallinckrodt Preferred Share. As used in this Certification Form: • a “Qu

Exhibit 99.1 PROMPT ACTION IS REQUIRED BY ALL BROKERS AND SHAREHOLDERS PLEASE RETURN THIS CERTIFICATION FORM IMMEDIATELY FAILURE TO PROPERLY AND TIMELY COMPLETE THIS CERTIFICATION FORM IN ACCORDANCE WITH THE INSTRUCTIONS IN THE INFORMATION STATEMENT WILL RESULT IN YOUR RIGHT TO RECEIVE PAR HEALTH COMMON STOCK OR CASH IN THE SPIN-OFF LAPSING AND EXPIRING Spin-off of Par Health On October 10, 2025,

October 24, 2025 8-K

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 October 21, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 October 21, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File N

October 24, 2025 EX-99.2

MALLINCKRODT PLC (in the process of changing its name to Keenova Therapeutics plc) (the “Company”) College Business & Technology Park Cruiserath, Blanchardstown, Dublin 15, NOTICE OF INTENTION TO REDEEM 2025 PREFERRED SHARES OF THE COMPANY

Exhibit 99.2 MALLINCKRODT PLC (in the process of changing its name to Keenova Therapeutics plc) (the “Company”) College Business & Technology Park Cruiserath, Blanchardstown, Dublin 15, Ireland NOTICE OF INTENTION TO REDEEM 2025 PREFERRED SHARES OF THE COMPANY To: The Holders of the 2025 Preferred Shares (as defined below) as at the Record Date (as defined below) Date: October 24, 2025 Dear Holder

October 16, 2025 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2025 Mallinckrodt plc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

October 16, 2025 EX-99.3

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

Exhibit 99.3 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION The following unaudited pro forma condensed combined financial information (“Pro Forma Financial Information”) is derived from the historical consolidated financial statements of Mallinckrodt plc (“Mallinckrodt” or the “Company”), Endo, Inc. (“Endo”), and Endo International Plc (“Endo’s Predecessor”). The unaudited Pro Forma

October 15, 2025 EX-99.1

Exhibit 99.1 October 14, 2025 Dear Shareholders and Brokers: Your immediate attention is needed to ensure that any future dividend or distribution to shareholders is received! At the Extraordinary General Meeting of the shareholders of Mallinckrodt p

Exhibit 99.1 October 14, 2025 Dear Shareholders and Brokers: Your immediate attention is needed to ensure that any future dividend or distribution to shareholders is received! At the Extraordinary General Meeting of the shareholders of Mallinckrodt plc held on October 8, 2025, we achieved an important milestone that enables us to issue preferred shares. As soon as Friday, October 10, 2025, you wil

October 15, 2025 EX-4.1

MALLINCKRODT PLC (in the process of changing its name to Keenova Therapeutics plc) 2025 Preferred Share Terms

Exhibit 4.1 MALLINCKRODT PLC (in the process of changing its name to Keenova Therapeutics plc) 2025 Preferred Share Terms This document sets out the terms of a series of Preferred Shares of US$0.001 each issued pursuant to Article 3(d) of the Articles of Association of Mallinckrodt plc (the “Company”) issued pursuant to the authority granted by a resolution of the board of directors of the Company

October 15, 2025 8-K

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 October 8, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 October 8, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

October 15, 2025 EX-3.1

Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION MALLINCKRODT PUBLIC LIMITED COMPANY (Adopted on 8 October 2025)

Exhibit 3.1 Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION of MALLINCKRODT PUBLIC LIMITED COMPANY (Adopted on 8 October 2025) DUBLIN Cert. No.: 522227 Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES CONSTITUTION of MALLINCKRODT PUBLIC LIMITED COMPANY MEMORANDUM OF ASSOCIATION 1. The name of the Company is Mallinckrodt public limited company. 2. T

October 9, 2025 8-K

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 October 8, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 October 8, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

October 6, 2025 EX-99.1

MALLINCKRODT PLC SEGMENT OPERATING INCOME TO ADJUSTED EBITDA RECONCILIATIONS1 (unaudited, in millions)

EXHIBIT 99.1 MALLINCKRODT PLC SEGMENT OPERATING INCOME TO ADJUSTED EBITDA RECONCILIATIONS1 (unaudited, in millions) Three Months Ended June 27, 2025 Three Months Ended March 28, 2025 Three Months Ended December 27, 2024 Three Months Ended September 27, 2024 Specialty Brands Segment Operating Income per SEC Filings2 $ 87.4 $ 50.6 $ 74.4 $ 77.9 Allocated Corporate Costs3 (74.5 ) (70.3 ) (69.0 ) (68.

October 6, 2025 8-K

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 October 6, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 October 6, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

October 6, 2025 EX-99.2

Lender Presentation October 2025

Exhibit 99.2 Lender Presentation October 2025 © 2025 Mallinckrodt plc or one of its affiliates. All rights reserved. Information Regarding Forward - Looking Statements 2 Mallinckrodt - Endo Statements in this presentation regarding the businesses of Mallinckrodt plc and its subsidiaries, including Par Health (coll ect ively, “Mallinckrodt”) and Endo LP (formerly Endo, Inc.) and its subsidiaries (c

September 30, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

September 22, 2025 EX-99.1

Mallinckrodt Names Dr. Marek J. Honczarenko as EVP and Chief Scientific Officer

Exhibit 99.1 Mallinckrodt Names Dr. Marek J. Honczarenko as EVP and Chief Scientific Officer DUBLIN, September 22, 2025 – Mallinckrodt plc today announced the appointment of Dr. Marek J. Honczarenko as Executive Vice President and Chief Scientific Officer, effective September 29, 2025. Dr. Honczarenko, currently the SVP and Head of Development at Sun Pharmaceutical Industries (“Sun Pharma”), will

September 22, 2025 8-K

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 September 22, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt p

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 September 22, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File

August 25, 2025 8-K

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 August 19, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 August 19, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

August 20, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

August 14, 2025 EX-4.3

MALLINCKRODT PHARMACEUTICALS 2025 STOCK AND INCENTIVE PLAN Effective August 13, 2025 Article I PURPOSE

Exhibit 4.3 MALLINCKRODT PHARMACEUTICALS 2025 STOCK AND INCENTIVE PLAN Effective August 13, 2025 Article I PURPOSE 1.1            Purpose. The purposes of this Plan are to promote the interests of the Company by (i) aiding in the recruitment and retention of Directors, Employees and Consultants, (ii) providing incentives to Directors, Employees and Consultants by means of performance-related incen

August 14, 2025 S-8

As filed with the Securities and Exchange Commission on August 14, 2025

As filed with the Securities and Exchange Commission on August 14, 2025 Registration No.

August 14, 2025 EX-FILING FEES

Table 1: Newly Registered Securities

Calculation of Filing Fee Tables S-8 Mallinckrodt plc Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Ordinary Shares, $0.

August 14, 2025 EX-10.2

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions Restricted Unit Award

Exhibit 10.2 [CEO Inducement Grant] Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on August , 2025 (the “Grant Date”). 1.            Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the

August 14, 2025 EX-10.3

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions Restricted Unit Award

Exhibit 10.3 [Employee and Executive Form] Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.            Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the

August 14, 2025 EX-10.4

Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions Restricted Unit Award

Exhibit 10.4 [Director Form] Mallinckrodt Pharmaceuticals 2025 Stock and Incentive Plan (“Plan”) Terms and Conditions of Restricted Unit Award RESTRICTED UNIT AWARD (“Award”) granted on , 202 (the “Grant Date”). 1.            Grant of Restricted Units. Mallinckrodt plc (the “Company”) has granted you [] Restricted Units subject to the provisions of these Terms and Conditions and the Plan. The Comp

August 14, 2025 8-K

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 August 13, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc

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 August 13, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

August 6, 2025 EX-10.2

Form of Deed of Indemnification Agreement by and between Mallinckrodt plc and Officers.

Exhibit 10.2 MNK PLC FORM FOR MALLINCKRODT PLC OFFICERS DEED OF INDEMNIFICATION THIS DEED OF INDEMNIFICATION (this “Agreement”), dated as of , 20, is made by and between Mallinckrodt plc, a public limited company incorporated in Ireland, and (“Indemnitee”). WHEREAS, it is essential to Mallinckrodt plc to retain and attract as personnel the most capable persons available; WHEREAS, Indemnitee is an

August 6, 2025 EX-99.2

Exhibit 99.2 ENDO, INC. INDEX Condensed Consolidated Balance Sheets as of June 30, 2025 (Successor) and December 31, 2024 (Successor) (Unaudited) 2 Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2025 (Succ

endo992 Exhibit 99.2 ENDO, INC. INDEX Condensed Consolidated Balance Sheets as of June 30, 2025 (Successor) and December 31, 2024 (Successor) (Unaudited) 2 Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2025 (Successor), the three and six months ended June 30, 2024 (Successor), the period April 1, 2024 to April 23, 2024 (Predecessor) and the period Janu

August 6, 2025 EX-99.1

Mallinckrodt plc Reports Financial Results for Second Quarter 2025 and Provides Guidance Legacy Mallinckrodt Second Quarter 2025 Results Delivers Second Quarter Net Sales of $485.1 Million, Reflecting a 5.7% Year-Over-Year Decrease on a Reported Basi

Exhibit 99.1 Mallinckrodt plc Reports Financial Results for Second Quarter 2025 and Provides Guidance Legacy Mallinckrodt Second Quarter 2025 Results Delivers Second Quarter Net Sales of $485.1 Million, Reflecting a 5.7% Year-Over-Year Decrease on a Reported Basis; Excluding Impact of Therakos® Divestiture, Net Sales Grew 8.5% Reports Net Income of $2.4 Million and Adjusted EBITDA of $137.2 Millio

August 6, 2025 EX-10.2

Amendment No. 1 to Form of Second Amended and Restated Restricted Unit Award for Directors under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan.

Exhibit 10.2 [Director Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Second Amended and Restated RESTRICTED UNIT AWARD AMENDMENT #1 RESTRICTED UNIT AWARD (“Award”) granted on February 19, 2024 (the “Grant Date”) as amended and restated as of August 5, 2024, and as further amended and restated as of December 2, 2024, is hereby further amended as o

August 6, 2025 EX-24.1

Power of Attorney.*

Exhibit 24.1 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Mark Tyndall as his or her true and lawful attorney-in-fact and agent with full power of substitution, for him or her in any and all capacities, to sign (i) one or more Registration Statements including on Form S-8 (and any and all amendments thereto, in

August 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 27, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 27, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-35803 Mallinckrodt plc (Exa

August 6, 2025 S-8 POS

As filed with the Securities and Exchange Commission on August 6, 2025

As filed with the Securities and Exchange Commission on August 6, 2025 Registration No.

August 6, 2025 8-K

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): August 6, 2025 Mallinckrodt plc (

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): August 6, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Num

August 6, 2025 EX-99.3

Exhibit 99.3 Management’s Discussion and Analysis of Financial Condition and Results of Operations The following Management’s Discussion and Analysis of Financial Condition and Results of Operations describes the principal factors affecting our finan

endo993 Exhibit 99.3 Management’s Discussion and Analysis of Financial Condition and Results of Operations The following Management’s Discussion and Analysis of Financial Condition and Results of Operations describes the principal factors affecting our financial condition at June 30, 2025 and results of operations for the Successor three and six months ended June 30, 2025 and 2024, the Predecessor

August 6, 2025 EX-10.1

Amendment No. 1 to Form of Second Amended and Restated Restricted Unit Award for Executive Officers under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan.

Exhibit 10.1 [EC other than CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Second Amended and Restated RESTRICTED UNIT AWARD AMENDMENT #1 RESTRICTED UNIT AWARD (“Award”) granted on February 2, 2024 (the “Grant Date”), as amended and restated as of August 5, 2024, and as further amended and restated as of December 2, 2024, is hereby further ame

August 6, 2025 EX-10.1

Employment Agreement, by and between ST Shared Services LLC and Christiana Stamoulis, dated as of August 1, 2025.

Exhibit 10.1 EMPLOYMENT AGREEMENT This EMPLOYMENT AGREEMENT (this “Agreement”) is entered into on August 1, 2025 (the “Effective Date”) by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Christiana Stamoulis (the “Executive”) (collectively referred to as “Parties” or individually referred to as a “Party”). WHEREAS, the Company

August 6, 2025 8-K

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 July 31, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (E

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 July 31, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

August 1, 2025 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 July 31, 2025 Date of Report (Date of Earliest Event Reported)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 July 31, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (

August 1, 2025 EX-99.2

Confidential and subject to change Par Health Confidential and subject to change Par Health Transaction Overview Confidential and subject to change Par Health Confidential and subject to change Transaction Summary Confidential and subject to change P

Exhibit 99.2 Confidential and subject to change Par Health Confidential and subject to change Par Health Transaction Overview Confidential and subject to change Par Health Confidential and subject to change Transaction Summary Confidential and subject to change Par Health 1. PF. Adj. EBITDA burdened by $35mm of forecasted annual net dissynergies Transaction Summary 1 Sources New $200mm Revolver $

August 1, 2025 EX-10.2

Form of Indemnification Agreement by and between Sucampo Pharmaceuticals LLC and Directors and Secretary.

Exhibit 10.2   SUCAMPO FORM FOR MALLINCKRODT PLC DIRECTORS/SECRETARY   INDEMNIFICATION AGREEMENT   THIS INDEMNIFICATION AGREEMENT (this “Agreement”), dated as of , 20, is made by and between Sucampo Pharmaceuticals LLC, a Delaware limited liability company (“Sucampo”), and (“Indemnitee”).   WHEREAS, Sucampo is a wholly owned subsidiary of Mallinckrodt plc, a public limited company incorporated in

August 1, 2025 EX-99.3

Par Health Deal - basis financial information presentation

Exhibit 99.3 Par Health Deal - basis financial information presentation Table of contents 2 July 2025 | Par Health Page 2 Summary of findings Business overview Quality of earnings Recast income statement Working capital Appendix 1 2 3 4 5 6 3 10 16 48 69 78 Summary of findings Standalone and synergies Diligence adjusted gross profit Diligence adjusted net sales Diligence EBITDA $(35.0)m $728.5m $1

August 1, 2025 EX-99.5

AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

Exhibit 99.5 EXECUTION VERSION AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT This Amended and Restated Registration Rights Agreement (including all exhibits hereto and as may be amended, supplemented or restated from time to time in accordance with the terms hereof, this “Agreement”) is made and entered into as of the Effective Date, by and among Mallinckrodt plc, an Irish public limited comp

August 1, 2025 EX-99.1

Mallinckrodt, Endo Complete Merger to Create Global, Scaled, Diversified Therapeutics Leader Highly Complementary Companies to Advance Therapies to Address Unmet Patient Needs Respective Generics Businesses and Endo’s Sterile Injectables Business to

Exhibit 99.1 Mallinckrodt, Endo Complete Merger to Create Global, Scaled, Diversified Therapeutics Leader Highly Complementary Companies to Advance Therapies to Address Unmet Patient Needs Respective Generics Businesses and Endo’s Sterile Injectables Business to be Combined and Spun Off as an Independent Company with Target Date in the Fourth Quarter of 2025 New York Stock Exchange (NYSE) Listing

August 1, 2025 EX-3.1

Amended and Restated Memorandum and Articles of Association of Mallinckrodt plc.

Exhibit 3.1 Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES MEMORANDUM and ARTICLES OF ASSOCIATION of MALLINCKRODT PUBLIC LIMITED COMPANY (as amended by Special Resolution passed on 13 June 2025 with effect from 31 July 2025) DUBLIN Cert. No.: 522227 Companies Act 2014 A PUBLIC COMPANY LIMITED BY SHARES CONSTITUTION of MALLINCKRODT PUBLIC LIMITED COMPANY MEMORANDUM OF ASSOCIATION 1. The name

August 1, 2025 EX-10.1

Form of Deed of Indemnification by and between Mallinckrodt plc and Directors and Secretary.

Exhibit 10.1   PLC FORM FOR MALLINCKRODT PLC DIRECTORS/SECRETARY   DEED OF INDEMNIFICATION   THIS DEED OF INDEMNIFICATION (this “Agreement”), dated as of , 20, is made by and between Mallinckrodt plc, a public limited company incorporated in Ireland, and (“Indemnitee”).   WHEREAS, it is essential to Mallinckrodt plc to retain and attract as directors and secretary the most capable persons availabl

August 1, 2025 EX-10.1

Credit Agreement, dated as of July 31, 2025, by and among ST 2020, Inc., as Parent, MEH, Inc., as Borrower, the lenders named therein and Wilmington Savings Fund Society, FSB, as Administrative Agent and Collateral Agent.

  Exhibit 10.1   EXECUTION VERSION   $1,350,000,000    CREDIT AGREEMENT   Dated as of July 31, 2025   among   MEH, INC., as the Borrower,   ST 2020, INC., as the Parent,   WILMINGTON SAVINGS FUND SOCIETY, FSB, as Administrative Agent,   WILMINGTON SAVINGS FUND SOCIETY, FSB, as Collateral Agent,   THE LENDERS PARTY HERETO,   GOLDMAN SACHS BANK USA, as Arranger and Bookrunner,   and   OPY CREDIT COR

August 1, 2025 EX-99.4

Certain Preliminary Financial Information

Exhibit 99.4 Certain Preliminary Financial Information The following preliminary financial information for the 2nd quarter of fiscal year 2025 was provided to certain shareholders on July 10, 2025. · Consolidated Revenue is favorable to the model with all segments above or at forecast · Consolidated PF Adj. EBITDA is ~$5-6mm off model forecast with favorability from MNK Gx being offset by Endo Si

August 1, 2025 8-K

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 July 31, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (E

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 July 31, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

July 31, 2025 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

July 7, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): July 7, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

July 7, 2025 EX-10.1

Third Amended and Restated Employment Agreement, by and between ST Shared Services LLC and Sigurdur Olafsson, dated July 7, 2025.

Exhibit 10.1 THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT This THIRD AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”), is entered into on July 7, 2025 and shall be effective on the Effective Date, as defined below, by and between ST Shared Services LLC, a Delaware limited liability company, or any successor thereto (the “Company”), and Sigurdur Olafsson (the “Executive”). WHEREAS, t

June 13, 2025 EX-99.1

Mallinckrodt and Endo Shareholders Approve Combination to Create a Global, Scaled, Diversified Pharmaceuticals Leader Mallinckrodt to Apply to Irish High Court for Approval of Scheme of Arrangement

Exhibit 99.1 Mallinckrodt and Endo Shareholders Approve Combination to Create a Global, Scaled, Diversified Pharmaceuticals Leader Mallinckrodt to Apply to Irish High Court for Approval of Scheme of Arrangement DUBLIN and MALVERN, Pa., June 13, 2025 /PRNewswire/ – Mallinckrodt plc (“Mallinckrodt”) and Endo, Inc. (OTCQX: NDOI) (“Endo”) today announced that their respective shareholders have provide

June 13, 2025 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

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 June 13, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

June 9, 2025 EX-99.1

Mallinckrodt, Endo Announce Planned Leadership Team for Merged Company Experienced and Highly Capable Senior Executives to Lead both the Branded Specialty Pharmaceutical and Generics & Sterile Injectables Businesses Generics & Sterile Injectables Spi

Exhibit 99.1 Mallinckrodt, Endo Announce Planned Leadership Team for Merged Company Experienced and Highly Capable Senior Executives to Lead both the Branded Specialty Pharmaceutical and Generics & Sterile Injectables Businesses Generics & Sterile Injectables Spin-Off to be Called Par Health DUBLIN and MALVERN, Pa., June 9, 2025 – Mallinckrodt plc (“Mallinckrodt”) and Endo, Inc. (OTCQX: NDOI) (“En

June 9, 2025 425

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 June 9, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Ex

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 June 9, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numbe

June 9, 2025 EX-99.1

Mallinckrodt, Endo Announce Planned Leadership Team for Merged Company Experienced and Highly Capable Senior Executives to Lead both the Branded Specialty Pharmaceutical and Generics & Sterile Injectables Businesses Generics & Sterile Injectables Spi

Exhibit 99.1 Mallinckrodt, Endo Announce Planned Leadership Team for Merged Company Experienced and Highly Capable Senior Executives to Lead both the Branded Specialty Pharmaceutical and Generics & Sterile Injectables Businesses Generics & Sterile Injectables Spin-Off to be Called Par Health DUBLIN and MALVERN, Pa., June 9, 2025 – Mallinckrodt plc (“Mallinckrodt”) and Endo, Inc. (OTCQX: NDOI) (“En

June 9, 2025 8-K

Financial Statements and Exhibits, Other Events

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 June 9, 2025 Date of Report (Date of Earliest Event Reported) Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numbe

May 30, 2025 EX-1.01

Exhibit 1.01

Exhibit 1.01 Conflict Minerals Report Introduction Mallinckrodt plc is a global business consisting of multiple wholly owned subsidiaries (collectively, “Mallinckrodt” or “the Company”) that develops, manufactures, markets and distributes specialty pharmaceutical products and therapies. The Company’s Specialty Brands reportable segment’s areas of focus include autoimmune and rare diseases in speci

May 30, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 (State or other jurisdiction of incorporation) (Co

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 (State or other jurisdiction of incorporation) (Commission File Number) College Business & Technology Park, Cruiserath, Blanchardstown, Dublin 15, Ireland (Address of principal executive offices) (Zip

May 16, 2025 8-K

Submission of Matters to a Vote of Security Holders

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): May 15, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

May 16, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Form S-4 No. 333-286694 Subject Company: Endo, Inc. (Commission File No. 333-280767) P22993 - EPB ALL VOTES MATTER PLEASE VOTE FOR BOTH THE COURT MEETING AND THE EGM TODAY! GO VOTE BUSINESS COMBINATION WITH EN

May 16, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): May 14, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Numb

May 13, 2025 425

Mallinckrodt and Endo Announce Significant Progress in Proposed Merger S-4 Registration Statement Effective; HSR Waiting Period Expired Irish High Court Approves Convening of Shareholder Meetings Shareholder Vote Scheduled for June 13

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Form S-4 No. 333-286694 Subject Company: Endo, Inc. (Commission File No. 333-280767) Mallinckrodt and Endo Announce Significant Progress in Proposed Merger S-4 Registration Statement Effective; HSR Waiting Per

May 13, 2025 425

###

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Form S-4 No. 333-286694 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Colleagues, I’m pleased to report today exciting news regarding our planned merger with Endo to create a global, scaled

May 12, 2025 424B3

Endo, Inc. 9 Great Valley Parkway Malvern, Pennsylvania 19355

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(3)  Registration File No. 333-286694 Endo, Inc. 9 Great Valley Parkway Malvern, Pennsylvania 19355 May 12, 2025 Dear Endo Stockholder: You are cordially invited to attend a special meeting of the stockholders (the “Endo special meeting”) of Endo, Inc. (“Endo”), to be held on June 13, 2025 at 9.00 a.m., Eastern Time, at 9 Great Valley Parkway, Malver

May 12, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 28, 2025

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 28, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-35803 Mallinckrodt plc (Ex

May 9, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Form S-4 No. 333-286694 Subject Company: Endo, Inc. (Commission File No. 333-280767) Mallinckrodt (Q1 2025) May 6, 2025 Corporate Speakers: · Siggi Olafsson; Mallinckrodt PLC; Chief Executive Officer · Bryan R

May 8, 2025 S-4/A

As filed with the Securities and Exchange Commission on May 8, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 8, 2025 Registration No.

May 8, 2025 EX-99.7

Consent of Goldman Sachs.**

Exhibit 99.7 200 West Street | New York, NY 10282-2198 Tel: 212-902-1000 | Fax: 212-902-3000 May 8, 2025 Board of Directors Endo, Inc. 1400 Atwater Drive Malvern, PA 19355 Re: Amendment No. 2 (the “Amendment”) to Registration Statement on Form S-4 of Mallinckrodt plc (File No. 333-286694) (the “Registration Statement”) Ladies and Gentlemen: Reference is made to our opinion letter, dated March 13,

May 8, 2025 EX-99.6

Consent of Lazard Frères & Co. LLC**

Exhibit 99.6 The Board of Directors Mallinckrodt plc College Business & Technology Park, Cruiserath Blanchardstown, Dublin 15, Ireland The Board of Directors: We hereby consent to the inclusion of our opinion letter, dated March 13, 2025, to the Board of Directors of Mallinckrodt plc (“Mallinckrodt”) as Annex F to, and reference thereto under the headings “SUMMARY — Opinion of Mallinckrodt’s Finan

May 8, 2025 EX-99.3

Form of Proxy Card of Endo, Inc.**

Exhibit 99.3 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. V75347-Z90334 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ENDO, INC. 9 GREAT VALLEY PARKWAY MALVERN, PA. 19355 ! ! ! ! ! ! ! ! ! ! ! ! 1. The

May 8, 2025 CORRESP

[Letterhead of Mallinckrodt plc] May 8, 2025

[Letterhead of Mallinckrodt plc] May 8, 2025 VIA EDGAR Division of Corporation Finance Office of Life Sciences U.

May 8, 2025 EX-99.1

Form of Proxy Card of Mallinckrodt, plc Court Meetings.**

Exhibit 99.1 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. C/O MALLINCKRODT PLC COMPANY SECRETARY COLLEGE BUSINESS & TECHNOLOGY PARK CRUISERATH, BLANCHARDSTOWN DUBLIN 15, IRELAND VOTE BY INTER

May 6, 2025 425

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): May 6, 2025 Mallinckrodt plc (Exa

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): May 6, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Number

May 6, 2025 EX-99.1

Mallinckrodt plc Reports First Quarter 2025 Financial Results and Reaffirms Full-Year Guidance Delivers First Quarter Net Sales of $419.9 Million, Reflecting a 10%Year-Over-Year Decrease on a Reported Basis; Excluding Impact of Therakos® Divestiture,

Exhibit 99.1 Mallinckrodt plc Reports First Quarter 2025 Financial Results and Reaffirms Full-Year Guidance Delivers First Quarter Net Sales of $419.9 Million, Reflecting a 10%Year-Over-Year Decrease on a Reported Basis; Excluding Impact of Therakos® Divestiture, Net Sales Grew 2.5% Reports Net Loss of $27.7 Million and Adjusted EBITDA of $102.3 Million Acthar® Gel (repository corticotropin inject

May 6, 2025 EX-99.1

Form of Proxy Card of Mallinckrodt, plc Court Meeting.**

Exhibit 99.1 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. C/O MALLINCKRODT PLC COMPANY SECRETARY COLLEGE BUSINESS & TECHNOLOGY PARK CRUISERATH, BLANCHARDSTOWN DUBLIN 15, IRELAND VOTE BY INTER

May 6, 2025 EX-99.6

Consent of Lazard Frères & Co. LLC**

Exhibit 99.6 The Board of Directors Mallinckrodt plc College Business & Technology Park, Cruiserath Blanchardstown, Dublin 15, Ireland The Board of Directors: We hereby consent to the inclusion of our opinion letter, dated March 13, 2025, to the Board of Directors of Mallinckrodt plc (“Mallinckrodt”) as Annex F to, and reference thereto under the headings “SUMMARY — Opinion of Mallinckrodt’s Finan

May 6, 2025 EX-99.1

Mallinckrodt plc Reports First Quarter 2025 Financial Results and Reaffirms Full-Year Guidance Delivers First Quarter Net Sales of $419.9 Million, Reflecting a 10%Year-Over-Year Decrease on a Reported Basis; Excluding Impact of Therakos® Divestiture,

Exhibit 99.1 Mallinckrodt plc Reports First Quarter 2025 Financial Results and Reaffirms Full-Year Guidance Delivers First Quarter Net Sales of $419.9 Million, Reflecting a 10%Year-Over-Year Decrease on a Reported Basis; Excluding Impact of Therakos® Divestiture, Net Sales Grew 2.5% Reports Net Loss of $27.7 Million and Adjusted EBITDA of $102.3 Million Acthar® Gel (repository corticotropin inject

May 6, 2025 S-4/A

As filed with the Securities and Exchange Commission on May 6, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 6, 2025 Registration No.

May 6, 2025 EX-99.11

Consent of Marc Yoskowitz.*

Exhibit 99.11 Consent of Prospective Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, the undersigned hereby consents to being named in the Registration Statement on Form S-4 of Mallinckrodt plc (the “Registrant”), and all amendment or supplements thereto (the “Registration Statement”), as a person who is to become a director of the Registrant effective as of

May 6, 2025 EX-99.9

Consent of Scott Hirsch.*

Exhibit 99.9 Consent of Prospective Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, the undersigned hereby consents to being named in the Registration Statement on Form S-4 of Mallinckrodt plc (the “Registrant”), and all amendment or supplements thereto (the “Registration Statement”), as a person who is to become a director of the Registrant effective as of

May 6, 2025 EX-21.2

Subsidiaries of Endo, Inc.*

Exhibit 21.2 SUBSIDIARIES OF ENDO, INC. The following is a list of the subsidiaries of Endo, Inc. as of December 31, 2024. Subsidiary Jurisdiction of Incorporation or Organization Ownership by Endo, Inc. Endo Finance Holdings, Inc. Delaware Direct Endo Enterprise, Inc. Delaware Indirect Paladin Pharma Inc. Canada Indirect Endo USA, Inc. Delaware Indirect Endo US Holdings Luxembourg I S.a.r.l. Luxe

May 6, 2025 EX-99.7

Consent of Goldman Sachs.**

Exhibit 99.7 200 West Street | New York, NY 10282-2198 Tel: 212-902-1000 | Fax: 212-902-3000 May 6, 2025 Board of Directors Endo, Inc. 1400 Atwater Drive Malvern, PA 19355 Re: Amendment No. 1 (the “Amendment”) to Registration Statement on Form S-4 of Mallinckrodt plc (File No. 333-286694) (the “Registration Statement”) Ladies and Gentlemen: Reference is made to our opinion letter, dated March 13,

May 6, 2025 CORRESP

[Letterhead of Wachtell, Lipton, Rosen & Katz]

[Letterhead of Wachtell, Lipton, Rosen & Katz] May 6, 2025 VIA EDGAR Division of Corporation Finance Office of Life Sciences U.

May 6, 2025 EX-99.3

Form of Proxy Card of Endo, Inc.**

Exhibit 99.3 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. V75347-Z90334 ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ENDO, INC. 9 GREAT VALLEY PARKWAY MALVERN, PA. 19355 ! ! ! ! ! ! ! ! ! ! ! ! 1. The

May 6, 2025 EX-99.10

Consent of Sophia Langlois.*

Exhibit 99.10 Consent of Prospective Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, the undersigned hereby consents to being named in the Registration Statement on Form S-4 of Mallinckrodt plc (the “Registrant”), and all amendment or supplements thereto (the “Registration Statement”), as a person who is to become a director of the Registrant effective as of

May 6, 2025 EX-99.2

Form of Proxy Card of Mallinckrodt, plc Extraordinary General Meeting.*

Exhibit 99.2 Signature [PLEASE SIGN WITHIN BOX] Date Signature [PLEASE SIGN WITHIN BOX] Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: The Board of Directors recommends you vote FOR each of the following proposals at the Extraordinary General Meeting: Extraordinary General Meeting Proxy Card Please date and sign name exactly as it appears hereon. Executors, administrators, truste

May 6, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 6, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Number

May 2, 2025 LETTER

LETTER

May 2, 2025 Mark Tyndall, Esq. Chief Legal Officer Mallinckrodt plc College Business & Technology Park, Cruiserath, Blanchardstown, Dublin 15, D15 TX2V, Ireland Re: Mallinckrodt plc Registration Statement on Form S-4 Filed April 23, 2025 File No. 333-286694 Dear Mark Tyndall Esq.: We have conducted a limited review of your registration statement and have the following comment. Please respond to th

April 23, 2025 EX-99.6

Consent of Lazard Frères & Co. LLC

Exhibit 99.6 The Board of Directors Mallinckrodt plc College Business & Technology Park, Cruiserath Blanchardstown, Dublin 15, Ireland The Board of Directors: We hereby consent to the inclusion of our opinion letter, dated March 13, 2025, to the Board of Directors of Mallinckrodt plc (“Mallinckrodt”) as Annex F to, and reference thereto under the headings “SUMMARY — Opinion of Mallinckrodt’s Finan

April 23, 2025 EX-99.8

Consent of Paul S. Efron.*

Exhibit 99.8 Consent of Prospective Director Pursuant to Rule 438 promulgated under the Securities Act of 1933, as amended, the undersigned hereby consents to being named in the Registration Statement on Form S-4 of Mallinckrodt plc (the “Registrant”), and all amendment or supplements thereto (the “Registration Statement”), as a person who is to become a director of the Registrant effective as of

April 23, 2025 EX-99.7

Consent of Goldman Sachs.

Exhibit 99.7 200 West Street | New York, NY 10282-2198 Tel: 212-902-1000 | Fax: 212-902-3000 April 23, 2025 Board of Directors Endo, Inc. 1400 Atwater Drive Malvern, PA 19355 Re: Registration Statement on Form S-4 of Mallinckrodt plc, filed April 23, 2025 (the “Registration Statement”) Ladies and Gentlemen: Reference is made to our opinion letter, dated March 13, 2025 (“Opinion Letter”), with resp

April 23, 2025 S-4

As filed with the Securities and Exchange Commission on April 23, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on April 23, 2025 Registration No.

April 23, 2025 425

###

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-6(b) of the Securities Exchange Act of 1934 Form S-4 No. 333-286694 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Colleagues, When we announced the exciting news last month of our planned merger with Endo, we committed to keeping the

April 23, 2025 EX-FILING FEES

Filing Fee Table*

Exhibit 107 Calculation of Filing Fee Tables Form S-4 (Form Type) Mallinckrodt plc (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title(1) Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees to Be Paid Equity Ordinary shares, par value $0.

April 3, 2025 ARS

ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 27, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 001-35803 Mallinckrodt plc (Exact

April 3, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

April 3, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

March 24, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Mallinckrodt(March 18 Town Hall) March 19, 2025* Corporate Speakers: · Joyce Pearl; Director Commercial Communications · Sigurdur Olafsson; Mallinckro

March 18, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Valued Mallinckrodt Partner, I am reaching out to share some exciting news regarding Mallinckrodt. We recently announced that we have agreed to c

March 18, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Mallinckrodt (Town Hall) March 13, 2025* Corporate Speakers: · Sigurdur Olafsson; Mallinckrodt Pharmaceuticals; Chief Executive Officer, President PRE

March 14, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Mallinckrodt and Endo Q4 2024 Earnings and Joint Transaction Call Transcript March 13, 2025 Companies’ Participants: Laure E. Park - Senior Vice Presi

March 13, 2025 EX-99.1

Mallinckrodt plc Reports Fourth Quarter and Fiscal Year 2024 Financial Results and Provides 2025 Guidance Achieved High End of Full-Year Net Sales Guidance Range and Midpoint of Adjusted EBITDA Guidance Range Grew Full-Year Net Sales by 6.1% to $2.0

Exhibit 99.1 Mallinckrodt plc Reports Fourth Quarter and Fiscal Year 2024 Financial Results and Provides 2025 Guidance Achieved High End of Full-Year Net Sales Guidance Range and Midpoint of Adjusted EBITDA Guidance Range Grew Full-Year Net Sales by 6.1% to $2.0 Billion, with 14.2% Growth in Acthar® Gel (repository corticotropin injection) and 15.4% Growth in Specialty Generics; Reduced Total Debt

March 13, 2025 EX-4.4

Exhibit 4.4

Exhibit 4.4 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the share capital of Mallinckrodt plc (“Mallinckrodt” or the “Company”) is a summary. This summary does not purport to be complete and is qualified in its entirety by reference to the Irish Companies Act 2014 (the “Companies Act”) and the comp

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Valued Mallinckrodt Partner, I am pleased to share some exciting news regarding Mallinckrodt. We just announced that we have agreed to combine wi

March 13, 2025 8-K/A

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation)

March 13, 2025 EX-99.3

CONFIDENTIAL Project Salvare DISCUSSION MATERIALS FEBRUARY 2025 CONFIDENTIAL Table of Contents PROJECT SALVARE Preliminary Value Creation Analysis of a Potential Transaction Overview of a Potential Generics Separation 4 Appendix Strategic Perspective

Exhibit 99.3 CONFIDENTIAL Project Salvare DISCUSSION MATERIALS FEBRUARY 2025 CONFIDENTIAL Table of Contents PROJECT SALVARE Preliminary Value Creation Analysis of a Potential Transaction Overview of a Potential Generics Separation 4 Appendix Strategic Perspectives on a Potential Transaction 2 3 1 Executive Summary PROJECT SALVARE 3 Preliminary and Illustrative • Given the clear alignment of the Ma

March 13, 2025 EX-99.2

Creating a Global, Scaled, Diversified Pharmaceuticals Leader 1 March 13, 2025 Disclosures There are a number of important factors that could cause actual events to differ materially from those suggested or indicated by such forward-looking statement

Exhibit 99.2 Creating a Global, Scaled, Diversified Pharmaceuticals Leader 1 March 13, 2025 Disclosures No Offer or Solicitation This communication is not intended to and shall not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such of

March 13, 2025 EX-99.1

FORM OF VOTING AND SUPPORT AGREEMENT

Exhibit 99.1 FORM OF VOTING AND SUPPORT AGREEMENT This Voting and Support Agreement (this “Agreement”) is made and entered into as of March 13, 2025 (the “Agreement Date”), by and among (i) Mallinckrodt plc, a public limited company incorporated in Ireland (hereinafter called “Macaw”), (ii) Endo, Inc., a Delaware corporation (hereinafter called “Eagle”), and (iii) [     ], a shareholder of Eagle (

March 13, 2025 EX-99.1

FORM OF VOTING AND SUPPORT AGREEMENT

Exhibit 99.1 FORM OF VOTING AND SUPPORT AGREEMENT This Voting and Support Agreement (this “Agreement”) is made and entered into as of March 13, 2025 (the “Agreement Date”), by and among (i) Mallinckrodt plc, a public limited company incorporated in Ireland (hereinafter called “Macaw”), (ii) Endo, Inc., a Delaware corporation (hereinafter called “Eagle”), and (iii) [     ], a shareholder of Eagle (

March 13, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Num

March 13, 2025 EX-99.1

Mallinckrodt and Endo to Combine to Create a Global, Scaled, Diversified Pharmaceuticals Leader Transaction Brings Together Two Highly Complementary Businesses to Broaden Patient Access and Develop New Therapies to Address Unmet Patient Needs Combine

Exhibit 99.1 Mallinckrodt and Endo to Combine to Create a Global, Scaled, Diversified Pharmaceuticals Leader Transaction Brings Together Two Highly Complementary Businesses to Broaden Patient Access and Develop New Therapies to Address Unmet Patient Needs Combined Company Expected to Benefit from Immediate Scale, Robust Cash Flow and Enhanced Financial Flexibility to Invest in Internal and Externa

March 13, 2025 EX-99.2

Creating a Global, Scaled, Diversified Pharmaceuticals Leader 0 March 13, 2025 Today’s Speakers & Agenda 3 Siggi Olafsson Mallinckrodt President & CEO Bryan Reasons Mallinckrodt CFO Mark Bradley Endo CFO Scott Hirsch Endo Interim CEO 1 Strategic Rati

Exhibit 99.2 Creating a Global, Scaled, Diversified Pharmaceuticals Leader 0 March 13, 2025 Disclosures No Offer or Solicitation This communication is not intended to and shall not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such of

March 13, 2025 425

Employee FAQ

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Employee FAQ 1. What did Mallinckrodt announce? · We announced that Mallinckrodt has agreed to combine with Endo, Inc. · Endo is a diversified pharmac

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Mallinckrodt R&D Partner, I’m reaching out to share some exciting news regarding Mallinckrodt. We just announced that we have agreed to combine w

March 13, 2025 EX-10.18

Form of Second Amended and Restated Restricted Unit Award for Directors under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.18 to Mallinckrodt’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 10.18 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [Director Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTATED RESTR

March 13, 2025 EX-99.3

CONFIDENTIAL Project Salvare DISCUSSION MATERIALS FEBRUARY 2025 CONFIDENTIAL Table of Contents PROJECT SALVARE Preliminary Value Creation Analysis of a Potential Transaction Overview of a Potential Generics Separation 4 Appendix Strategic Perspective

Exhibit 99.3 CONFIDENTIAL Project Salvare DISCUSSION MATERIALS FEBRUARY 2025 CONFIDENTIAL Table of Contents PROJECT SALVARE Preliminary Value Creation Analysis of a Potential Transaction Overview of a Potential Generics Separation 4 Appendix Strategic Perspectives on a Potential Transaction 2 3 1 Executive Summary PROJECT SALVARE 3 Preliminary and Illustrative • Given the clear alignment of the Ma

March 13, 2025 EX-4.5

Supplemental Indenture No. 2, dated November 29, 2024, to the Indenture, dated as of November 14, 2023, by and among the Issuers, the Guarantors, Wilmington Savings Fund Society, FSB, as First Lien Trustee and Acquiom Agency Services LLC, as Collateral Agent (incorporated by reference to Exhibit 4.5 to the Company’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 4.5 EXECUTION VERSION SUPPLEMENTAL INDENTURE NO. 2 SUPPLEMENTAL INDENTURE NO. 2 (this “Supplemental Indenture”) dated as of November 29, 2024, among each THERAKOS LLC, a Florida limited liability company (the “Released Guarantor”), MALLINCKRODT INTERNATIONAL FINANCE S.A., a public limited liability company (société anonyme) organized under the laws of the Grand Duchy of Luxembourg, having

March 13, 2025 EX-10.23

Form of Award Forfeiture Agreement, by and between Mallinckrodt and the Grantee named therein (incorporated by reference to Exhibit 10.23 to Mallinckrodt’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 10.23 Form of Forfeiture Agreement AWARD FORFEITURE AGREEMENT This Award Forfeiture Agreement (this “Agreement”) is entered into on this [●] day of [●] 2024 by and between Mallinckrodt plc (the “Company”) and [●] (“Grantee”). RECITALS WHEREAS, in February 2024, the Company granted to Grantee [●] time-vesting restricted units (the “Award”) subject to the Mallinckrodt Pharmaceuticals 2024 St

March 13, 2025 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

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): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Valued Mallinckrodt Partner, I am reaching out to share some exciting news regarding Mallinckrodt. We just announced that we have agreed to combi

March 13, 2025 EX-10.16

Form of Second Amended and Restated Restricted Unit Award for the CEO under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.16 to Mallinckrodt’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 10.16 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTATED RESTRICTED

March 13, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 20

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 2) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation)

March 13, 2025 EX-10.1

Form of Voting Agreement, by and among, the Company, Endo and the Company’s shareholder(s) party thereto (filed under Item 1.01).

Exhibit 10.1 FORM OF VOTING AND SUPPORT AGREEMENT This Voting and Support Agreement (this “Agreement”) is made and entered into as of March 13, 2025 (the “Agreement Date”), by and among (i) Mallinckrodt plc,, a public limited company incorporated in Ireland (hereinafter called “Macaw”), (ii) Endo, Inc., a Delaware corporation (hereinafter called “Eagle”), and (iii) [        ], a shareholder of Mac

March 13, 2025 EX-2.1

Transaction Agreement, dated as of March 13, 2025, by and among the Company, Endo and Merger Sub. (filed under Item 1.01).

Exhibit 2.1 EXECUTION VERSION TRANSACTION AGREEMENT by and among Mallinckrodt plc, Endo, Inc., and Salvare Merger Sub LLC, dated as of March 13, 2025 TABLE OF CONTENTS 1. INTERPRETATION 2 1.1 Certain Definitions 2 1.2 Terms Defined Elsewhere 22 1.3 Construction 24 1.4 Captions 25 1.5 Time 25 2. SCHEME 25 2.1 Scheme 25 2.2 Change in Shares 25 3. IMPLEMENTATION OF THE SCHEME; COURT MEETINGs AND EGM

March 13, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 27, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number : 001-35803 Mallinckrodt plc (Exact

March 13, 2025 EX-19.1

Global Insider Trading Policy.

Exhibit 19.1 Effective Date: January 31, 2025 Table of Contents Section 1 – Statement of Policy 3 Section 2 – Purpose of this Policy 3 Section 3 – Policy Owner and Statement of Responsibility 3 Section 4 – Procedures for all Covered Persons 3 Section 5 – Special Procedures for the Window Group 6 Section 6 – Post-Termination Transactions 7 Section 7 – Exceptions 7 Section 8 – Consequences of Violat

March 13, 2025 EX-99.1

Mallinckrodt and Endo to Combine to Create a Global, Scaled, Diversified Pharmaceuticals Leader Transaction Brings Together Two Highly Complementary Businesses to Broaden Patient Access and Develop New Therapies to Address Unmet Patient Needs Combine

Exhibit 99.1 Mallinckrodt and Endo to Combine to Create a Global, Scaled, Diversified Pharmaceuticals Leader Transaction Brings Together Two Highly Complementary Businesses to Broaden Patient Access and Develop New Therapies to Address Unmet Patient Needs Combined Company Expected to Benefit from Immediate Scale, Robust Cash Flow and Enhanced Financial Flexibility to Invest in Internal and Externa

March 13, 2025 EX-21.1

Subsidiaries of Mallinckrodt plc (incorporated by reference to Exhibit 21.1 to Mallinckrodt’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 21.1 SUBSIDIARIES OF MALLINCKRODT PLC The following is a list of subsidiaries of Mallinckrodt plc as of December 27, 2024. Name of Subsidiary Jurisdiction of Incorporation/Organization Cache Holdings Limited Bermuda Carnforth Limited Bermuda Dritte CORSA Verwaltungsgesellschaft GmbH Germany Ikaria Australia Pty Ltd Australia Ikaria Canada Inc. Canada IMC Exploration Company Maryland Infaca

March 13, 2025 EX-2.1

Transaction Agreement, dated as of March 13, 2025, by and among the Company, Endo and Merger Sub. (filed under Item 1.01).

Exhibit 2.1 EXECUTION VERSION TRANSACTION AGREEMENT by and among Mallinckrodt plc, Endo, Inc., and Salvare Merger Sub LLC, dated as of March 13, 2025 TABLE OF CONTENTS 1. INTERPRETATION 2 1.1 Certain Definitions 2 1.2 Terms Defined Elsewhere 22 1.3 Construction 24 1.4 Captions 25 1.5 Time 25 2. SCHEME 25 2.1 Scheme 25 2.2 Change in Shares 25 3. IMPLEMENTATION OF THE SCHEME; COURT MEETINGs AND EGM

March 13, 2025 EX-99.2

Creating a Global, Scaled, Diversified Pharmaceuticals Leader 0 March 13, 2025 Today’s Speakers & Agenda 3 Siggi Olafsson Mallinckrodt President & CEO Bryan Reasons Mallinckrodt CFO Mark Bradley Endo CFO Scott Hirsch Endo Interim CEO 1 Strategic Rati

Exhibit 99.2 Creating a Global, Scaled, Diversified Pharmaceuticals Leader 0 March 13, 2025 Disclosures No Offer or Solicitation This communication is not intended to and shall not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such of

March 13, 2025 EX-10.1

Form of Voting Agreement, by and among, the Company, Endo and the Company’s shareholder(s) party thereto (filed under Item 1.01).

Exhibit 10.1 FORM OF VOTING AND SUPPORT AGREEMENT This Voting and Support Agreement (this “Agreement”) is made and entered into as of March 13, 2025 (the “Agreement Date”), by and among (i) Mallinckrodt plc,, a public limited company incorporated in Ireland (hereinafter called “Macaw”), (ii) Endo, Inc., a Delaware corporation (hereinafter called “Eagle”), and (iii) [        ], a shareholder of Mac

March 13, 2025 EX-10.15

Amendment No. 1 to the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan, dated as of December 2, 2024.

Exhibit 10.15 AMENDMENT NO. 1 TO THE MALLINCKRODT PHARMACEUTICALS 2024 STOCK AND INCENTIVE PLAN This Amendment No. 1 (“Amendment”) to the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (the “Plan”) is adopted by the Board of Directors of Mallinckrodt public limited company (the “Company”), to be effective as of December 2, 2024. 1. Purpose. The purpose of this Amendment is to amend the

March 13, 2025 425

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): March 13, 2025 Mallinckrodt plc

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): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Nu

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Colleagues, We just announced that we are embarking on the next exciting stage in our evolution by combining with Endo, Inc. This transaction is

March 13, 2025 425

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 20

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation)

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo Inc. (Commission File No. 333-280767) Social Media Posts LinkedIn X (Twitter)

March 13, 2025 EX-10.17

Form of Second Amended and Restated Restricted Unit Award for Executive Officers under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.17 to Mallinckrodt’s Annual Report on Form 10-K filed March 13, 2025).

Exhibit 10.17 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [EC other than CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTA

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) [Name] [Address] By email only RE: Mallinckrodt and Endo to Combine to Create a Global, Scaled, Diversified Pharmaceuticals Leader 13 March 2025 Dear

March 13, 2025 EX-99.2

Creating a Global, Scaled, Diversified Pharmaceuticals Leader 1 March 13, 2025 Disclosures There are a number of important factors that could cause actual events to differ materially from those suggested or indicated by such forward-looking statement

Exhibit 99.2 Creating a Global, Scaled, Diversified Pharmaceuticals Leader 1 March 13, 2025 Disclosures No Offer or Solicitation This communication is not intended to and shall not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities, or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such of

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Valued Mallinckrodt Partner, I am reaching out to share some exciting news regarding Mallinckrodt. We just announced that we have agreed to combi

March 13, 2025 425

Filed by Mallinckrodt plc (Commission File No. 001-35803)

Filed by Mallinckrodt plc (Commission File No. 001-35803) Pursuant to Rule 425 of the Securities Act of 1933 and deemed filed Pursuant to Rule 14a-12 of the Securities Exchange Act of 1934 Subject Company: Endo, Inc. (Commission File No. 333-280767) Dear Valued Mallinckrodt Partner, I am reaching out to share some exciting news regarding Mallinckrodt. We just announced that we have agreed to combi

March 13, 2025 8-K/A

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 OR 15(d)  of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 13, 2025 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation)

December 5, 2024 EX-10.2

Form of Second Amended and Restated Performance Unit Award for the CEO under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.2 to Mallinckrodt’s Current Report on Form 8-K filed December 5, 2024)

Exhibit 10.2 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTATED PERFORMANCE

December 5, 2024 EX-10.3

Form of Second Amended and Restated Performance Unit Award for Executive Officers under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.3 to Mallinckrodt’s Current Report on Form 8-K filed December 5, 2024)

Exhibit 10.3 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [EC other than CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTAT

December 5, 2024 EX-10.1

Mallinckrodt plc Second Amended and Restated Long-Term Transaction Incentive Plan, amended as of December 2, 2024 (incorporated by reference to Exhibit 10.1 to Mallinckrodt’s Current Report on Form 8-K filed December 5, 2024)

Exhibit 10.1 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. MALLINCKRODT PLC SECOND AMENDED AND RESTATED LONG-TERM TRANSACTION INCENTIVE PLAN (“Transaction Incentive Plan”) AS AMENDED AND RESTATED ON DE

December 5, 2024 EX-99.1

Mallinckrodt Completes Divestiture of Therakos® Business Net Proceeds to Reduce the Company’s Net Debt by More Than 60%

EXHIBIT 99.1 Mallinckrodt Completes Divestiture of Therakos® Business Net Proceeds to Reduce the Company’s Net Debt by More Than 60% DUBLIN, December 2, 2024 – Mallinckrodt plc (“Mallinckrodt” or the “Company”), a global specialty pharmaceutical company, today announced that it has completed the previously announced sale of its Therakos business to CVC Capital Partners Fund IX for a purchase price

December 5, 2024 EX-2.2

Amendment No. 1 to Purchase and Sale Agreement, dated as of November 29, 2024, by and between the Company, Solaris Bidco Limited, Solaris IPCo Limited and Solaris US BidCo, LLC (incorporated by reference to Exhibit 2.2 to the Company’s Current Report on Form 8-K filed December 5, 2024).

Exhibit 2.2 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. EXECUTION VERSION AMENDMENT NO. 1 TO PURCHASE AND SALE AGREEMENT This AMENDMENT NO. 1 (this “Amendment”), dated as of November 29, 2024, to the

December 5, 2024 EX-10.4

Form of Second Amended and Restated Performance Unit Award for Directors under the Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (incorporated by reference to Exhibit 10.4 to Mallinckrodt’s Current Report on Form 8-K filed December 5, 2024)

Exhibit 10.4 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [Director Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF SECOND AMENDED AND RESTATED PERFOR

December 5, 2024 8-K

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 29, 2024 Mallinckrodt pl

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 29, 2024 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File

December 5, 2024 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION INTRODUCTORY NOTE

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION INTRODUCTORY NOTE The following unaudited pro forma condensed combined financial information (“Pro Forma Financial Information”) is derived from the historical consolidated financial statements of Mallinckrodt plc (“Mallinckrodt” or the “Company”). The unaudited Pro Forma Financial Information is for informational and illust

November 21, 2024 SC 13D/A

MNK / Mallinckrodt Plc - New / Bracebridge Capital, LLC - SC 13D/A Activist Investment

SC 13D/A 1 d874622dsc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* Mallinckrodt plc (Name of Issuer) Ordinary Shares, par value $0.01 per share (Title of Class of Securities) G5890A102 (CUSIP Number) John N. Spinney, Jr Bracebridge Capital, LLC 888 Boylston Street, Suite 1500 Bosto

November 14, 2024 SC 13G/A

MNK / Mallinckrodt Plc - New / Flynn James E Passive Investment

SC 13G/A 1 e664008sc13ga-mallinckrodt.htm SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (Amendment No. 2)* Mallinckrodt plc (Name of Issuer) Ordinary Shares, par value $0.01 per share (Title of Class of Securities) G5890A

November 5, 2024 EX-99.1

Mallinckrodt plc Reports Third Quarter 2024 Financial Results and Raises Full Year Guidance Achieves Third Quarter Net Sales of $505.5 Million, Reflecting 1.7% Year-Over-Year Growth Reaffirms Full Year Net Sales Guidance and Raises Full Year Adjusted

Exhibit 99.1 Mallinckrodt plc Reports Third Quarter 2024 Financial Results and Raises Full Year Guidance Achieves Third Quarter Net Sales of $505.5 Million, Reflecting 1.7% Year-Over-Year Growth Reaffirms Full Year Net Sales Guidance and Raises Full Year Adjusted EBITDA Guidance After Adjusting Both Metrics for the Therakos Transaction Delivers Third Consecutive Quarter of Acthar® Gel Growth, Unde

November 5, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2024

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 27, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-35803 Mallinckrodt plc

November 5, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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 5, 2024 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File N

October 21, 2024 SC 13G/A

Hudson Bay Capital Management LP - MNKTQ 13GA

SC 13G/A 1 mnktq13ga.htm MNKTQ 13GA SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Mallinckrodt plc (Name of Issuer) Ordinary Shares, $0.01 par value (Title of Class of Securities) ** (CUSIP Number) May 31, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the ru

September 10, 2024 EX-99.1

MALLINCKRODT PLC SEGMENT OPERATING INCOME TO ADJUSTED EBITDA RECONCILIATIONS (unaudited, in millions) Successor Three Months Ended June 28, 2024 Three Months Ended March 29, 2024 Specialty Generics Segment Operating Income per SEC Filings 2 $ 62.4 $

EXHIBIT 99.1 MALLINCKRODT PLC SPECIALTY GENERICS SEGMENT ADJUSTED EBITDA (unaudited, in millions) Three Months Ended June 28, 2024 Three Months Ended March 29, 2024 Three Months Ended December 29, 2023 Three Months Ended September 29, 2023 Three Months Ended June 30, 2023 Three Months Ended March 31, 2023 Specialty Generics Adjusted EBITDA 1 $ 94.6 $ 67.6 $ 46.1 $ 64.8 $ 46.1 $ 43.1 MALLINCKRODT P

September 10, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): September 10, 2024 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File

August 27, 2024 SC 13G/A

MNK / Mallinckrodt Plc - New / MARATHON ASSET MANAGEMENT LP - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Mallinckrodt plc (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) G5890A102 (CUSIP Number) August 27, 2024 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the

August 6, 2024 EX-10.1

Form of Amended and Restated Restricted Unit Award for Officers under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.1 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [EC other than CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Amended and Restated REST

August 6, 2024 EX-4.3

Supplemental Indenture No. 1, dated as of May 1, 2024, to the Indenture, dated as of November 14, 2023, by and among the Issuers, the Guarantors, Wilmington Savings Fund Society, FSB, as First Lien Trustee and Acquiom Agency Services LLC, as Collateral Agent (incorporated by reference to Exhibit 4.3 to Mallinckrodt’s Quarterly Report on Form 10-Q filed August 6, 2024).

EXHIBIT 4.3 SUPPLEMENTAL INDENTURE NO. 1 SUPPLEMENTAL INDENTURE NO. 1 (this “Supplemental Indenture”) dated as of May 1, 2024, among each Subsidiary Guarantor listed on Schedule 1 hereto (the “Released Guarantors”), MALLINCKRODT INTERNATIONAL FINANCE S.A., a public limited liability company (société anonyme) organized under the laws of the Grand Duchy of Luxembourg, having its registered office at

August 6, 2024 EX-10.4

Form of Amended and Restated Performance Unit Award for Officers under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.4 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [EC other than CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Amended and Restated PERF

August 6, 2024 EX-99.1

Mallinckrodt plc Reports Second Quarter 2024 Financial Results and Raises Full Year Guidance Achieves Second Quarter Net Sales of $514.3 Million, Reflecting 8.3% Year-Over-Year Growth on a Reported Basis and 8.4% on a Constant Currency Basis Reports

Exhibit 99.1 Mallinckrodt plc Reports Second Quarter 2024 Financial Results and Raises Full Year Guidance Achieves Second Quarter Net Sales of $514.3 Million, Reflecting 8.3% Year-Over-Year Growth on a Reported Basis and 8.4% on a Constant Currency Basis Reports Net Loss of $43.3 Million, Reflecting a 94.2% Year-Over-Year Improvement; Delivers Adjusted EBITDA of $174.0 Million, Reflecting 20.8% Ye

August 6, 2024 EX-10.5

Form of Amended and Restated Performance Unit Award for the CEO under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.5 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) Terms and Conditions OF Amended and Restated PERFORMANCE RESTRI

August 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): August 6, 2024 Mallinckrodt plc (Exact name of registrant as specified in its charter) Ireland 001-35803 98-1088325 (State or other jurisdiction of incorporation) (Commission File Num

August 6, 2024 EX-10.3

Form of Amended and Restated Restricted Unit Award for Directors under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.3 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [Director Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Amended and Restated RESTRICTED UN

August 6, 2024 EX-10.7

Mallinckrodt plc Amended and Restated Long-Term Transaction Incentive Plan.*

Exhibit 10.7 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. MALLINCKRODT PLC AMENDED AND RESTATED LONG-TERM TRANSACTION INCENTIVE PLAN (“Transaction Incentive Plan”) A.Purposes. The Board of Directors (

August 6, 2024 EX-10.2

Form of Amended and Restated Restricted Unit Award for the CEO under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.2 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [CEO Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF AMENDED AND RESTATED RESTRICTED UNIT AW

August 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2024

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 28, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number : 001-35803 Mallinckrodt plc (Ex

August 6, 2024 EX-10.6

Form of Amended and Restated Performance Unit Award for Directors under the Mallinckrodt plc 2024 Stock and Incentive Plan.

Exhibit 10.6 CERTAIN INFORMATION CONTAINED IN THIS EXHIBIT HAS BEEN OMITTED BY MEANS OF REDACTING A PORTION OF THE TEXT AND REPLACING IT WITH [***] BECAUSE IT IS BOTH: (I) NOT MATERIAL AND (II) THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL. [Director Form] Mallinckrodt Pharmaceuticals 2024 Stock and Incentive Plan (“Plan”) TERMS AND CONDITIONS OF Amended and Restated PERFORMANCE R

August 5, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

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): August 5, 2024 Mallinckrodt plc (Exact name of registrant as specified in its charter) Commission file number 001-35803 Ireland 98-1088325 (State or other jurisdiction of incorporati

August 5, 2024 EX-99.1

Mallinckrodt Reaches Agreement to Sell Therakos® Business to CVC for $925 Million Divestiture Advances Mallinckrodt’s Strategic Priorities to Optimize Capital Structure and Focus on Core Areas of Expertise Mallinckrodt to Use Net Proceeds to Reduce N

Exhibit 99.1 Mallinckrodt Reaches Agreement to Sell Therakos® Business to CVC for $925 Million Divestiture Advances Mallinckrodt’s Strategic Priorities to Optimize Capital Structure and Focus on Core Areas of Expertise Mallinckrodt to Use Net Proceeds to Reduce Net Debt by More Than 50% CVC Brings Resources and Expertise to Further Develop and Commercialize Therakos DUBLIN and LUXEMBOURG – August

August 5, 2024 EX-2.1

Purchase and Sale Agreement, dated as of August 3, 2024, by and between the Company, Solaris Bidco Limited, Solaris IPCo Limited and Solaris US BidCo LLC (incorporated by reference to Exhibit 2.1 to the Company’s Current Report on Form 8-K filed August 5, 2024).

Exhibit 2.1 EXECUTION VERSION PURCHASE AND SALE AGREEMENT BY AND BETWEEN MALLINCKRODT PLC SOLARIS BIDCO LIMITED SOLARIS IPCO LIMITED AND SOLARIS US BIDCO, LLC Dated as of August 3, 2024 EXECUTION VERSION Table of Contents Page Article I DEFINITIONS 5 Section 1.1 Definitions 5 Section 1.2 Other Defined Terms 31 Article II PURCHASE AND SALE; CLOSING; DEFERRED CLOSINGS 36 Section 2.1 Purchase and Sal

July 8, 2024 EX-99.1

AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13D

EX-99.1 2 d851058dex991.htm EX-99.1 Exhibit 1 AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13D The undersigned hereby agree as follows: (i) Each of them is individually eligible to use the Schedule 13D to which this Exhibit is attached, and such Schedule 13D is filed on behalf of each of them; and (ii) Each of them is responsible for the timely filing of such Schedule 13D and any amendments th

How Much do you Like Fintel?
Please share your opinion of our service!
Excellent Bad
Fintel data has been cited in the following publications:
Daily Mail Fox Business Business Insider Wall Street Journal The Washington Post Bloomberg Financial Times Globe and Mail
NASDAQ.com Reuters The Guardian Associated Press FactCheck.org Snopes Politifact
Federal Register The Intercept Forbes Fortune Magazine TheStreet Time Magazine Canadian Broadcasting Corporation International Business Times
Cambridge University Press Investopedia MarketWatch NY Daily News Entrepreneur Newsweek Barron's El Economista