6-K

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 May 2024

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

Forward-Looking Statements	3
Exhibit Index	5
Signatures	6

2

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 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 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;

•expectations concerning the adequacy of the company’s warranty provisions and estimates for future warranty-related costs;

•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.

3

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 the Form 20-F filed with the Securities and Exchange Commission on 16 May 2023, 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; 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.

4

EXHIBIT INDEX

Exhibit No.	Description
99.1	Change in substantial holding
99.2	Change in substantial holding

5

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:   10 May 2024	By:  /s/ Aoife Rockett
	Aoife Rockett
	Company Secretary

6

EXHIBIT INDEX

Exhibit No.	Description
99.1	Change in substantial holding
99.2	Change in substantial holding

7

EX-99.1

James Hardie Industries plc 1st Floor, Block A, One Park Place, Upper Hatch Street, Dublin 2, D02 FD79, Ireland T: +353 (0) 1 411 6924 F: +353 (0) 1 479 1128 James Hardie Industries plc is a limited liability company incorporated in Ireland with its registered office at 1st Floor, Block A, One Park Place, Upper Hatch Street, Dublin 2, D02 FD79, Ireland. Directors: Anne Lloyd (Chairperson, USA), Peter-John Davis (Aus), Persio Lisboa (USA), Renee Peterson (USA), Rada Rodriguez (Sweden), Suzanne B. Rowland (USA), Nigel Stein (UK), Harold Wiens (USA). Chief Executive Officer and Director: Aaron Erter (USA) Company number: 485719 ARBN: 097 829 895 3 May 2024 The Manager Company Announcements Office Australian Securities Exchange Limited 20 Bridge Street SYDNEY NSW 2000 Dear Sir/Madam Substantial Holding Notice As required under ASX Listing Rule 3.17.3 please see attached copy of the substantial holding notice received by James Hardie on 2 May 2024. Regards Aoife Rockett Company Secretary This announcement has been authorised for release by the Company Secretary, Ms Aoife Rockett. Exhibit 99.1

STANDARD FORM TR-1 VOTING RIGHTS ATTACHED TO SHARES– ARTICLE 12(1) OF DIRECTIVE 2004/109/EC FINANCIAL INSTRUMENTS – ARTICLE 11(3) OF THE COMMISSION DIRECTIVE 2007/14/ECi 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ii: JAMES HARDIE INDUSTRIES PLC 2. Reason for the notification (please tick the appropriate box or boxes): [ X ] an acquisition or disposal of voting rights [ ] an acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached [ ] an event changing the breakdown of voting rights 3. Full name of person(s) subject to the notification obligationiii: BlackRock, Inc. 4. Full name of shareholder(s) (if different from 3.) iv: See Section 9 5. Date of the transaction and date on which the threshold is crossed or reachedv: 01/05/2024 6. Date on which issuer notified: 02/05/2024 7. Threshold(s) that is/are crossed or reached: Holdings for BlackRock, Inc. have gone above 6%. 8. Notified details: A) Voting rights attached to shares Class/type of shares (if possible using the ISIN CODE) Situation previous to the Triggering transaction vi Resulting situation after the triggering transactionviiviii Number of Sharesix Number of Voting rightsx Number of sharesxi Number of voting rightsxii % of voting rights Direct Direct xiii Indirectxiv Direct Indirect AU000000JHX1 N/A 25,272,922 N/A N/A 25,290,538 N/A 5.83% SUBTOTAL A (based on 25,290,538 5.83%

aggregate voting rights) B) Financial Instruments Resulting situation after the triggering transactionxv Type of financial instrument Expiration Datexvi Exercise/Conversion Period/ Datexvii Number of voting rights that may be acquired if the instrument is exercised/converted % of voting rights American Depository Receipts N/A N/A 746,690 0.17% SUBTOTAL B (in relation to all expiration dates) 746,690 0.17% Total (A+B) number of voting rights % of voting rights 26,037,228 26,037,228 6.00% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicablexviii: Each of the following entities, which are wholly owned subsidiaries of BlackRock, Inc., hold the following interests in voting rights in their capacity as Investment Manager on behalf of clients: Investment Manager Voting Rights % BlackRock Fund Advisors 7,717,943 1.77% BlackRock Institutional Trust Company, National Association 5,978,957 1.37% BlackRock Investment Management (Australia) Limited 3,864,842 0.89% BlackRock Advisors (UK) Limited 2,942,011 0.67% BlackRock Investment Management (UK) Limited 1,313,661 0.30% BlackRock Japan Co., Ltd. 863,471 0.19%

BlackRock Advisors, LLC 731,707 0.16% BlackRock Financial Management, Inc. 500,486 0.11% BlackRock Asset Management Canada Limited 466,017 0.10% BlackRock Investment Management, LLC 354,335 0.08% Aperio Group, LLC 241,384 0.05% BlackRock (Singapore) Limited 176,902 0.04% BlackRock Capital Management, Inc. 84,267 0.01% BlackRock International Limited 47,112 0.01% BlackRock Asset Management North Asia Limited 7,443 0.00% 10. In case of proxy voting: [name of the proxy holder] will cease to hold [number] voting rights as of [date]. 11. Additional information: Done at 12 Throgmorton Avenue, London, EC2N 2DL, U.K. on 02 May 2024

EX-99.2

James Hardie Industries plc 1st Floor, Block A, One Park Place, Upper Hatch Street, Dublin 2, D02 FD79, Ireland T: +353 (0) 1 411 6924 F: +353 (0) 1 479 1128 James Hardie Industries plc is a limited liability company incorporated in Ireland with its registered office at 1st Floor, Block A, One Park Place, Upper Hatch Street, Dublin 2, D02 FD79, Ireland. Directors: Anne Lloyd (Chairperson, USA), Peter-John Davis (Aus), Persio Lisboa (USA), Renee Peterson (USA), Rada Rodriguez (Sweden), Suzanne B. Rowland (USA), Nigel Stein (UK), Harold Wiens (USA). Chief Executive Officer and Director: Aaron Erter (USA) Company number: 485719 ARBN: 097 829 895 9 May 2024 The Manager Company Announcements Office Australian Securities Exchange Limited 20 Bridge Street SYDNEY NSW 2000 Dear Sir/Madam Substantial Holding Notice As required under ASX Listing Rule 3.17.3 please see attached copy of the substantial holding notice received by James Hardie on 8 May 2024. Regards Aoife Rockett Company Secretary This announcement has been authorised for release by the Company Secretary, Ms Aoife Rockett. Exhibit 99.2

= challenger.com.au Level 2, 5 Martin Place Sydney NSW 2000 Australia GPO Box 3698 Sydney NSW 2001 challenger.com.au Telephone 02 9994 7000 8 May 2024 Aoife Rockett Group Company Secretary James Hardie Industries plc Europa House, 2nd Floor Harcourt Centre Harcourt Street Dublin 2, Ireland By email: Aoife.Rockett@jameshardie.com , investor.relations@jameshardie.com.au Dear Sir/Madam Notification of change in disclosable interest under the Companies Act 2014 This notification is given in fulfillment of the duty imposed pursuant to Section 1048 and/or Section 1050 of the Companies Act 2014. Challenger Limited on behalf of its subsidiary Fidante Partners Limited (Challenger Companies) has a relevant share capital holding (as defined in Section 1047 of the Companies Act 2014) in James Hardie Industries PLC (JHX) which requires disclosure under Section 1048 and/or Section 1050 of the Companies Act 2014 as first notified to JHX on 23 October 2018. On 6 May 2024, there was a change in the share capital held by the Challenger Companies such that the shareholding decreased through a percentage point, with the Challenger Companies having an aggregated interest in JHX of 3.9550% of ordinary share capital (being a reduction from 4.0090%) which is held as set out in Part 1 of Schedule 1 to this letter. If you have any questions in relation to the above, please contact me at +61 2 9994 7094. Kind regards Linda Matthews Company Secretary Challenger Limited

challenger.com.au Schedule 1 Part 1 Registered Holder Number of Chess Depository Interests Held % J. P. Morgan Nominees Australia Pty Limited 5,833,719 1.3449% Citicorp Nominees Pty Limited 5,004,131 1.1536% National Nominees Limited 529,604 0.1221% HSBC Custody Nominees (Australia) Limited 5,523,004 1.2732% BNP Paribas Nominees Pty Limited 202,834 0.0468% UBS Nominees Pty Limited 62,668 0.0144% 3.9550%