6-K - JHX - Equibles

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

For the Month of December 2025

1-15240

(Commission File Number)

JAMES HARDIE INDUSTRIES plc

(Translation of registrant’s name into English)

1st Floor, Block A

One Park Place

Upper Hatch Street, Dublin 2, D02, FD79, Ireland

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F..X.... Form 40-F.........

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): Not Applicable

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): Not Applicable

Table of Contents

TABLE OF CONTENTS

Forward-Looking Statements	3
Exhibit Index	5
Signatures	6

Table of Contents

Forward-Looking Statements

This Form 6-K contains forward-looking statements. James Hardie Industries plc (the “Company”) may from time to time make forward-looking statements in its periodic reports filed with or furnished to the Securities and Exchange Commission, on Forms 20-F and 6-K, in its annual reports to shareholders, in offering circulars, invitation memoranda and prospectuses, in media and earnings releases and other written materials and in oral statements made by the Company’s officers, directors or employees to analysts, institutional investors, existing and potential lenders, representatives of the media and others. Statements that are not historical facts are forward-looking statements and such forward-looking statements are statements made pursuant to the Safe Harbor Provisions of the Private Securities Litigation Reform Act of 1995.

Examples of forward-looking statements include:

•statements about the future integration of AZEK, including its anticipated benefits;

•statements about the Company’s future performance;

•projections of the Company’s results of operations or financial condition;

•statements regarding the Company’s plans, objectives or goals, including those relating to strategies, initiatives, competition, acquisitions, dispositions and/or its products;

•expectations concerning the costs associated with the suspension or closure of operations at any of the Company’s plants and future plans with respect to any such plants;

•expectations concerning the costs associated with the significant capital expenditure projects at any of the Company’s plants and future plans with respect to any such projects;

•expectations regarding the extension or renewal of the Company’s credit facilities including changes to terms, covenants or ratios;

•expectations concerning dividend payments and share buy-backs;

•statements concerning the Company’s Corporate and tax domiciles and structures and potential changes to them, including potential tax charges;

•statements regarding tax liabilities and related audits, reviews and proceedings;

•statements regarding the possible consequences and/or potential outcome of legal proceedings brought against us and the potential liabilities, if any, associated with such proceedings;

•expectations about the timing and amount of contributions to AICF, a special purpose fund for the compensation of proven Australian asbestos-related personal injury and death claims;

•statements regarding the Company’s ability to manage legal and regulatory matters (including but not limited to product liability, environmental, intellectual property and competition law matters) and to resolve any such pending legal and regulatory matters within current estimates and in anticipation of certain third-party recoveries; and

•statements about economic or housing market conditions in the regions in which we operate, including but not limited to, the levels of new home construction and home renovations, unemployment levels, changes in consumer income, changes or stability in housing values, the availability of mortgages and other financing, mortgage and other interest rates, housing affordability and supply, the levels of foreclosures and home resales, currency exchange rates, and builder and consumer confidence.

Words such as “believe,” “anticipate,” “plan,” “expect,” “intend,” “target,” “estimate,” “project,” “predict,” “forecast,” “guideline,” “aim,” “will,” “should,” “likely,” “continue,” “may,” “objective,” “outlook” and similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements. Readers are cautioned not to place undue reliance on these forward-looking statements and all such forward-looking statements are qualified in their entirety by reference to the following cautionary statements.

Table of Contents

Forward-looking statements are based on the Company’s current expectations, estimates and assumptions and because forward-looking statements address future results, events and conditions, they, by their very nature, involve inherent risks and uncertainties, many of which are unforeseeable and beyond the Company’s control. Such known and unknown risks, uncertainties and other factors may cause actual results, performance or other achievements to differ materially from the anticipated results, performance or achievements expressed, projected or implied by these forward-looking statements. These factors, some of which are discussed under “Risk Factors” in Section 3 of our Form 20-F filed with the Securities and Exchange Commission on 20 May 2025, include, but are not limited to: all matters relating to or arising out of the prior manufacture of products that contained asbestos by current and former Company subsidiaries; required contributions to AICF, any shortfall in AICF funding and the effect of currency exchange rate movements on the amount recorded in the Company’s financial statements as an asbestos liability; compliance with and changes in tax laws and treatments; competition and product pricing in the markets in which the Company operates; the consequences of product failures or defects; exposure to environmental, asbestos, putative consumer class action or other legal proceedings; general economic and market conditions; the supply and cost of raw materials; possible increases in competition and the potential that competitors could copy the Company’s products; compliance with and changes in environmental and health and safety laws; risks of conducting business internationally; compliance with and changes in laws and regulations; currency exchange risks; dependence on customer preference and the concentration of the Company’s customer base; dependence on residential and commercial construction markets; the effect of adverse changes in climate or weather patterns; use of accounting estimates; the AZEK acquisition; and all other risks identified in the Company’s reports filed with Australian, Irish and US securities regulatory agencies and exchanges (as appropriate). The Company cautions you that the foregoing list of factors is not exhaustive and that other risks and uncertainties may cause actual results to differ materially from those referenced in the Company’s forward-looking statements. Forward-looking statements speak only as of the date they are made and are statements of the Company’s current expectations concerning future results, events and conditions. The Company assumes no obligation to update any forward-looking statements or information except as required by law.

Table of Contents

EXHIBIT INDEX

Exhibit No.	Description
99.1	Notification regarding unquoted securities - JHX
99.2	Notification regarding unquoted securities - JHX
99.3	Appendix 3Y - P LISBOA
99.4	Appendix 3Y - N STEIN
99.5	Appendix 3Y - S ROWLAND
99.6	Appendix 3Y - R PETERSON
99.7	Appendix 3Y - J PFEIFER
99.8	Appendix 3Y - H HECKES
99.9	Appendix 3Y - J SINGH
99.10	Appendix 3Y - G HENDRICKSON
99.11	Notification regarding unquoted securities - JHX

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	James Hardie Industries plc
Date: 23 December 2025	By: /s/ Aoife Rockett
	Aoife Rockett
	Company Secretary

Table of Contents

EXHIBIT INDEX

Exhibit No.	Description
99.1	Notification regarding unquoted securities - JHX
99.2	Notification regarding unquoted securities - JHX
99.3	Appendix 3Y - P LISBOA
99.4	Appendix 3Y - N STEIN
99.5	Appendix 3Y - S ROWLAND
99.6	Appendix 3Y - R PETERSON
99.7	Appendix 3Y - J PFEIFER
99.8	Appendix 3Y - H HECKES
99.9	Appendix 3Y - J SINGH
99.10	Appendix 3Y - G HENDRICKSON
99.11	Notification regarding unquoted securities - JHX

ex991notificationregardi

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 1 / 5 Announcement Summary Entity name JAMES HARDIE INDUSTRIES PLC Date of this announcement Thursday December 18, 2025 The +securities the subject of this notification are: Total number of +securities to be issued/transferred ASX +security code Security description Total number of +securities to be issued/transferred Issue date JHXAM ORDINARY SHARES 48,957 15/12/2025 Refer to next page for full details of the announcement +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 2 / 5 Part 1 - Entity and announcement details 1.1 Name of entity JAMES HARDIE INDUSTRIES PLC We (the entity named above) give notice of the issue, conversion or payment up of the following unquoted +securities. 1.2 Registered number type ARBN Registration number 097829895 1.3 ASX issuer code JHX 1.4 The announcement is 1.5 Date of this announcement 18/12/2025 New announcement

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 3 / 5 Part 2 - Issue details 2.1 The +securities the subject of this notification are: Previous Appendix 3B details: Announcement Date and Time 24-Mar-2025 08:33 Announcement Title New - Proposed issue of securities - JHX Selected Appendix 3B to submit quotation request A placement or other type of issue 2.3a.2 Are there any further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B? 2.3a.3 Please provide details of the further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B On July 1, 2025, James Hardie Industries plc ("James Hardie") consummated the merger contemplated by the Agreement and Plan of Merger, dated as of March 23, 2025, as amended, by and among James Hardie, Juno Merger Sub Inc., and The AZEK Company Inc. ("AZEK"). Shares issued represent James Hardie ordinary shares issued in respect of the settlement of certain AZEK equity awards outstanding as of the closing of the merger. Yes +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 5 / 5 Part 4 - +Securities on issue Following the issue, conversion or payment up of the +securities the subject of this notification, the +securities of the entity will comprise: The figures in parts 4.1 and 4.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing. 4.1 Quoted +securities (Total number of each +class of +securities issued and quoted on ASX) ASX +security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,398,108 4.2 Unquoted +securities (Total number of each +class of +securities issued but not quoted on ASX) ASX +security code and description Total number of +securities on issue JHXAK : RESTRICTED STOCK UNIT 5,195,479 JHXAM : ORDINARY SHARES 149,257,011 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

ex992notificationregardi

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 1 / 7 Announcement Summary Entity name JAMES HARDIE INDUSTRIES PLC Date of this announcement Friday December 19, 2025 The +securities the subject of this notification are: Total number of +securities to be issued/transferred ASX +security code Security description Total number of +securities to be issued/transferred Issue date JHXAM ORDINARY SHARES 15,525 15/12/2025 Refer to next page for full details of the announcement +Other securities issued under an +employee incentive scheme that are not intended to be quoted on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 2 / 7 Part 1 - Entity and announcement details 1.1 Name of entity JAMES HARDIE INDUSTRIES PLC We (the entity named above) give notice of the issue, conversion or payment up of the following unquoted +securities. 1.2 Registered number type ARBN Registration number 097829895 1.3 ASX issuer code JHX 1.4 The announcement is 1.5 Date of this announcement 19/12/2025 New announcement

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 3 / 7 Part 2 - Issue details 2.1 The +securities the subject of this notification are: 2.2a This notification is given in relation to an issue of +securities in a class which is not quoted on ASX and which: has an existing ASX security code ("existing class") +Other securities issued under an +employee incentive scheme that are not intended to be quoted on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 4 / 7 Part 3B - number and type of +securities the subject of this notification (existing class) where issue has not previously been notified to ASX in an Appendix 3B ASX +security code and description JHXAM : ORDINARY SHARES Date the +securities the subject of this notification were issued 15/12/2025 Will these +securities rank equally in all respects from their issue date with the existing issued +securities in that class Were any of the +securities issued to +key management personnel (KMP) or an +associate? Provide details of the KMP or +associates being issued +securities. Name of KMP Name of registered holder Number of +securities Persio V Lisboa Same 1,004 Nigel M Stein Same 998 Suzanne Rowland Same 777 Renee Peterson Same 2,332 John Pfeifer Same 780 Howard Heckes Same 2,826 Gary Hendrickson Same 4,599 Jesse Singh Same 1,652 Please provide a URL link for a document lodged with ASX detailing the terms of the +employee incentive scheme or a summary of the terms The terms of the James Hardie 2020 Non-Executive Director Equity Plan were summarised in the Notice of Meeting at Item 7 and the applicable Explanatory Notes. That publication is accessible at https://ir.jameshardie.com.au/financial-infor . mation/annual-reports-and-notice-of-meetings Any other information the entity wishes to provide about the +securities the subject of this notification James Hardie Industries plc applied for a waiver from Listing Rule 2.4 in respect to the issuance of the unquoted securities described in this appendix on 7 July 2025. ASX granted the waiver on 16 July 2025. Yes Yes

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 6 / 7 Part 4 - +Securities on issue Following the issue, conversion or payment up of the +securities the subject of this notification, the +securities of the entity will comprise: The figures in parts 4.1 and 4.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing. 4.1 Quoted +securities (Total number of each +class of +securities issued and quoted on ASX) ASX +security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,398,108 4.2 Unquoted +securities (Total number of each +class of +securities issued but not quoted on ASX) ASX +security code and description Total number of +securities on issue JHXAK : RESTRICTED STOCK UNIT 5,195,479 JHXAM : ORDINARY SHARES 149,223,579 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 7 / 7 Part 5 - Other Listing Rule requirements 5.1 Were the +securities issued under an exception in Listing Rule 7.2 and therefore the issue did not need any security holder approval under Listing Rule 7.1? 5.1a Select the number of the applicable exception in Listing Rule 7.2 14 Yes

Document

Exhibit 99.3<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Persio V. Lisboa
Date of last notice	2 December 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Indirect: 17,259 Ordinary Shares. The registered holder is Merrill Lynch Pierce Fenner, & Smith and they are held on account for the beneficial owner, Persio V. Lisboa.<br><br>Direct: 11,266 Ordinary Shares
Class	Ordinary Shares
Number acquired	1,004 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$18,493.68
No. of securities held after change	Current relevant interest is:<br><br>Indirect: 17,259 Ordinary Shares. The registered holder is Merrill Lynch Pierce Fenner, & Smith and they are held on account for the beneficial owner, Persio V. Lisboa.<br><br>Direct: 12,270 Ordinary Shares.
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.4 <br>Appendix 3Y <br>Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Nigel Stein
Date of last notice	2 December 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Indirect: 30,400 Ordinary Shares. The registered holder is Evelyn Partners Investment Services Limited (Formerly Pershing Securities Limited) and they are held on account for beneficial owner, Nigel Stein.<br>Direct: 7,542 Ordinary Shares.
Class	Ordinary Shares
Number acquired	998 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$18,383.16
No. of securities held after change	Current relevant interest is:<br><br>Indirect: 30,400 Ordinary Shares. The registered holder is Evelyn Partners Investment Services Limited (Formerly Pershing Securities Limited) and they are held on account for beneficial owner, Nigel Stein.<br><br>Direct: 8,540 Ordinary Shares.
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.5<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Suzanne B. Rowland
Date of last notice	22 September 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 5,109 Ordinary Shares.<br><br>Indirect: 5,770 Ordinary shares. The registered holder is Cede & Co. and they are held for the beneficial owner, Suzanne B. Rowland.
Class	Ordinary Shares
Number acquired	777 Ordinary shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$14,312.34
No. of securities held after change	Current relevant interest is:<br><br>Direct: 5,886 Ordinary Shares.<br><br>Indirect: 5,770 Ordinary Shares. The registered holder is Cede & Co. and they are held for the beneficial owner, Suzanne B. Rowland.
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.6<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Renee Peterson
Date of last notice	22 September 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 12,502 Ordinary Shares
Class	Ordinary Shares
Number acquired	2,332 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$42,955.44
No. of securities held after change	Current relevant interest is:<br><br>Direct: 14,834 Ordinary Shares
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary Shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.7<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	John C Pfeifer
Date of last notice	22 September 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 2,929 Ordinary Shares
Class	Ordinary Shares
Number acquired	780 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$14,367.60
No. of securities held after change	Current relevant interest is:<br><br>Direct: 3,709 Ordinary Shares
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.8<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

96+Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Howard Heckes
Date of last notice	8 July 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 22,261 Ordinary Shares<br><br>Indirect: Howard C Heckes Trust for which the Director serves as trustee – 2,585 Ordinary Shares
Class	Ordinary Shares
Number acquired	2,826 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$53,117
No. of securities held after change	Current relevant interest is:<br><br>Direct: 25,087 Ordinary Shares<br><br>Indirect: Howard C Heckes Trust for which the Director serves as trustee – 2,585 Ordinary Shares
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary Shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

Document

Exhibit 99.9<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

96+Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Jesse Singh
Date of last notice	8 December 2025
+ See chapter 19 for defined terms.
---

01/01/2011 Appendix 3Y Page 1

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 257,611 Ordinary Shares<br><br>Indirect:<br><br>The Linda Singh Revocable Trust - 0<br><br>The Linda S.R. Singh Family Trust – 358,797<br><br>The Jesse Singh 2016 Irrevocable Trust – 499,740<br><br>The Jesse G. Singh Revocable Trust – 555,471<br><br>The Jesse Singh 2024 Trust – 103,400
Class	Ordinary Shares
Number acquired	1,652 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$31,050.66
No. of securities held after change	Current relevant interest is:<br><br>Direct: 258,592 Ordinary Shares<br><br>Indirect:<br><br>The Linda Singh Revocable Trust - 0<br><br>The Linda S.R. Singh Family Trust – 358,797<br><br>The Jesse Singh 2016 Irrevocable Trust – 499,740<br><br>The Jesse G. Singh Revocable Trust – 555,471<br><br>The Jesse Singh 2024 Trust – 103,400
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

01/01/2011 Appendix 3Y Page 2

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

01/01/2011 Appendix 3Y Page 3

Document

Exhibit 99.10<br><br>Appendix 3Y<br><br>Change of Director’s Interest Notice

96+Rule 3.19A.2

Appendix 3Y

Change of Director’s Interest Notice

Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

Introduced 30/09/01 Amended 01/01/11

Name of entity	James Hardie Industries plc
ARBN	097 829 895

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director	Gary Hendrickson
Date of last notice	8 December 2025

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust

Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest	Direct
Nature of indirect interest<br><br>(including registered holder)<br><br>Note: Provide details of the circumstances giving rise to the relevant interest.	n/a
Date of change	15 December 2025
No. of securities held prior to change	Direct: 212,969 Ordinary Shares<br><br>Indirect: 192,878 Ordinary Shares
Class	Ordinary Shares
Number acquired	4,599 Ordinary Shares
Number disposed	Nil
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and estimated valuation	US$86,441.88
No. of securities held after change	Current relevant interest is:<br><br>Direct: 217,568 Ordinary Shares<br><br>Indirect: 192,878 Ordinary Shares
Nature of change<br><br>Example: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back	Issuance of Ordinary shares pursuant to the terms of the James Hardie 2020 Non-Executive Director Equity Plan.
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 1 01/01/2011

Appendix 3Y<br><br>Change of Director’s Interest Notice

Part 2 – Change of director’s interests in contracts

Note: In the case of a company, interests which come within paragraph (ii) of the definition of “notifiable interest of a director” should be disclosed in this part.

Detail of contract	Not applicable
Nature of interest	Not applicable
Name of registered holder<br><br>(if issued securities)	Not applicable
Date of change	Not applicable
No. and class of securities to which interest related prior to change<br><br>Note: Details are only required for a contract in relation to which the interest has changed	Not applicable
Interest acquired	Not applicable
Interest disposed	Not applicable
Value/Consideration<br><br>Note: If consideration is non-cash, provide details and an estimated valuation	Not applicable
Interest after change	Not applicable

Part 3 – +Closed period

Were the interests in the securities or contracts detailed above traded during a +closed period where prior written clearance was required?	No
If so, was prior-written clearance provided to allow the trade to proceed during this period?	Not applicable
If prior written clearance was provided, on what date was this provided?	Not applicable
+ See chapter 19 for defined terms.
---

Appendix 3Y Page 2 01/01/2011

ex9911notificationregard

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 1 / 5 Announcement Summary Entity name JAMES HARDIE INDUSTRIES PLC Date of this announcement Friday December 19, 2025 The +securities the subject of this notification are: Total number of +securities to be issued/transferred ASX +security code Security description Total number of +securities to be issued/transferred Issue date JHXAM ORDINARY SHARES 212,314 16/12/2025 Refer to next page for full details of the announcement +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 2 / 5 Part 1 - Entity and announcement details 1.1 Name of entity JAMES HARDIE INDUSTRIES PLC We (the entity named above) give notice of the issue, conversion or payment up of the following unquoted +securities. 1.2 Registered number type ARBN Registration number 097829895 1.3 ASX issuer code JHX 1.4 The announcement is 1.5 Date of this announcement 19/12/2025 New announcement

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 3 / 5 Part 2 - Issue details 2.1 The +securities the subject of this notification are: Previous Appendix 3B details: Announcement Date and Time 24-Mar-2025 08:33 Announcement Title New - Proposed issue of securities - JHX Selected Appendix 3B to submit quotation request A placement or other type of issue 2.3a.2 Are there any further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B? 2.3a.3 Please provide details of the further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B On July 1, 2025, James Hardie Industries plc ("James Hardie") consummated the merger contemplated by the Agreement and Plan of Merger, dated as of March 23, 2025, as amended, by and among James Hardie, Juno Merger Sub Inc., and The AZEK Company Inc. ("AZEK"). Shares issued represent James Hardie ordinary shares issued in respect of the settlement of certain AZEK equity awards outstanding as of the closing of the merger. Yes +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B that are not quoted, and are not intended to be quoted, on ASX

Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities Appendix 3G - Notification of issue, conversion or payment up of unquoted equity securities 5 / 5 Part 4 - +Securities on issue Following the issue, conversion or payment up of the +securities the subject of this notification, the +securities of the entity will comprise: The figures in parts 4.1 and 4.2 below are automatically generated and may not reflect the entity's current issued capital if other Appendix 2A, Appendix 3G or Appendix 3H forms are currently with ASX for processing. 4.1 Quoted +securities (Total number of each +class of +securities issued and quoted on ASX) ASX +security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,398,108 4.2 Unquoted +securities (Total number of each +class of +securities issued but not quoted on ASX) ASX +security code and description Total number of +securities on issue JHXAK : RESTRICTED STOCK UNIT 5,195,479 JHXAM : ORDINARY SHARES 149,420,368 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221