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), Howard Heckes (USA), Gary Hendrickson (USA), Persio Lisboa (USA), Renee Peterson (USA), John Pfeifer (USA), Rada Rodriguez (Sweden), Suzanne B. Rowland (USA), Jesse Singh (USA), Nigel Stein (UK). Chief Executive Officer and Director: Aaron Erter (USA) Company number: 485719 ARBN: 097 829 895 08 October 2025 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 07 October 2025. Regards Aoife Rockett Company Secretary This announcement has been authorised for release by the Company Secretary, Ms Aoife Rockett.

Standard Form TR-1 Standard form for notification of major holdings NOTIFICATION OF MAJOR HOLDINGS (to be sent to the relevant issuer and to the Central Bank of Ireland)i 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attachedii: JAMES HARDIE INDUSTRIES PLC 2. Reason for the notification (please tick the appropriate box or boxes): [] An acquisition or disposal of voting rights [ ] An acquisition or disposal of financial instruments [ ] An event changing the breakdown of voting rights [ ] Other (please specify)iii: Stock merger after M&A completion 3. Details of person subject to the notification obligationiv : Name: FMR LLC City and country of registered office (if applicable): Wilmington, USA 4. Full name of shareholder(s) (if different from 3.)v: 5. Date on which the threshold was crossed or reachedvi: 03rd of October 2025 6. Date on which issuer notified: 7th of October 2025 7. Threshold(s) that is/are crossed or reached: 3% 8. Total positions of person(s) subject to the notification obligation: % of voting rights attached to shares (total of 9.A) % of voting rights through financial instruments (total of 9.B.1 + 9.B.2) Total of both in % (9.A + 9.B) Total number of voting rights of issuervii Resulting situation on the date on which threshold was crossed or reached 2.7133% 0.0000% 2.7133% 579,185,043 Position of previous notification (if applicable) 3.0502% 0.0000% 3.0502%

9. Notified details of the resulting situation on the date on which the threshold was crossed or reachedviii: A: Voting rights attached to shares Class/type of shares ISIN code (if possible) Number of voting rightsix % of voting rights Direct Indirect Direct Indirect IE000R94NGM2 8,687,409 1.4999% AU000000JHX1 7,027,618 1.2134% SUBTOTAL A 15,715,027 2.7133% B 1: Financial Instruments according to Regulation 17(1)(a) of the Regulations Type of financial instrument Expiration datex Exercise/ Conversion Periodxi Number of voting rights that may be acquired if the instrument is exercised/converted. % of voting rights SUBTOTAL B.1 B 2: Financial Instruments with similar economic effect according to Regulation 17(1)(b) of the Regulations Type of financial instrument Expiration datex Exercise/ Conversion Period xi Physical or cash settlementxii Number of voting rights % of voting rights SUBTOTAL B.2

10. Information in relation to the person subject to the notification obligation (please tick the applicable box): [ ] Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer.xiii [] Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entityxiv: Namexv % of voting rights if it equals or is higher than the notifiable threshold % of voting rights through financial instruments if it equals or is higher than the notifiable threshold Total of both if it equals or is higher than the notifiable threshold FMR LLC Fidelity Management & Research Company LLC FMR LLC FMTC Holdings LLC Fidelity Management Trust Company FMR LLC FIAM Holdings LLC FIAM LLC FMR LLC Fidelity Management & Research Company LLC Fidelity Management & Research (Japan) Limited FMR LLC FIAM Holdings LLC

Fidelity Institutional Asset Management Trust Company FMR LLC Fidelity Advisory Holdings LLC Strategic Advisers LLC FMR LLC Fidelity Diversifying Solutions LLC 11. In case of proxy voting: [name of the proxy holder] will cease to hold [% and number] voting rights as of [date] 12. Additional informationxvi: Done at Dublin on 7th of Oct 2025.

Notes i. Persons completing this form should have regard to the requirements of the Transparency (Directive 2004/109/EC) Regulations 2007 as amended (the “Regulations”), the Central Bank of Ireland’s Transparency Rules (the “Transparency Rules”) and Commission Delegated Regulation (EU) 2015/761 of 17 December 2014. ii Full name of the legal entity and other identifying specification of the issuer or underlying issuer, provided it is reliable and accurate (e.g. address, LEI, domestic number identity). iii Other reason for the notification could be voluntary notifications, changes of attribution of the nature of the holding (e.g. expiring of financial instruments) or acting in concert. iv This should be the full name of (a) the shareholder; (b) the natural person or legal entity acquiring, disposing of or exercising voting rights in the cases provided for in Regulation 15(b) to (h) of the Regulations (Article 10 (b) to (h) of Directive 2004/109/EC); or (c) the holder of financial instruments referred to in Regulation 17(1) of the Regulations (Article 13(1) of Directive 2004/109/EC). As the disclosure of cases of acting in concert may vary due to the specific circumstances (e.g. same or different total positions of the parties, entering or exiting of acting in concert by a single party) the standard form does not provide for a specific method how to notify cases of acting in concert. In relation to the transactions referred to in points (b) to (h) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the following list is provided as an indication of the persons who should be mentioned: - in the circumstances foreseen in letter (b) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity that acquires the voting rights and is entitled to exercise them under the agreement and the natural person or legal entity who is transferring temporarily for consideration the voting rights; - in the circumstances foreseen in letter (c) of the Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity holding the collateral, provided the person or entity controls the voting rights and declares its intention of exercising them, and natural person or legal entity lodging the collateral under these conditions; - in the circumstances foreseen in letter (d) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity who has a life interest in shares if that person or entity is entitled to exercise the voting rights attached to the shares and the natural person or legal entity who is disposing of the voting rights when the life interest is created; - in the circumstances foreseen in letter (e) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the controlling natural person or legal entity and, provided it has a notification duty at an individual level under Regulation 14 of the Regulations (Article 9 of Directive 2004/109/EC), under letters (a) to (d) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC) or under a combination of any of those situations, the controlled undertaking; - in the circumstances foreseen in letter (f) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the deposit taker of the shares, if he can exercise the voting rights attached to the shares deposited with him at his discretion, and the depositor of the shares allowing the deposit taker to exercise the voting rights at his discretion; - in the circumstances foreseen in letter (g) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the natural person or legal entity that controls the voting rights; - in the circumstances foreseen in letter (h) of Regulation 15 of the Regulations (Article 10 of Directive 2004/109/EC), the proxy holder, if he can exercise the voting rights at his discretion, and the shareholder who has given his proxy to the proxy holder allowing the latter to exercise the voting rights at his discretion (e.g. management companies). v Applicable in the cases provided for in Regulation 15(b) to (h) of the Regulations (Article 10 (b) to (h) of Directive 2004/109/EC). This should be the full name of the shareholder who is the counterparty to the natural person or legal entity referred to in Regulation 15 of the Regulations (Article 10 Directive 2004/109/EC) unless the percentage of voting rights held by the shareholder is lower than the lowest notifiable threshold for the disclosure of voting rights holdings in accordance with the requirements of the Regulations and the Transparency Rules. vi The date on which threshold is crossed or reached should be the date on which the acquisition or disposal took place or the other reason triggered the notification obligation. For passive crossings, the date when the corporate event took effect.

vii The total number of voting rights shall be composed of all the shares, including depository receipts representing shares, to which voting rights are attached even if the exercise thereof is suspended. viii If the holding has fallen below the lowest applicable threshold in accordance with the Regulations and the Transparency Rules the holder is not obliged to disclose the extent of the holding only that the holding is “below 3%” or “below 5%” as appropriate. ix In case of combined holdings of shares with voting rights attached "direct holding" and voting rights "indirect holding", please split the voting rights number and percentage into the direct and indirect columns – if there is no combined holdings, please leave the relevant box blank. x Date of maturity/expiration of the financial instrument i.e. the date when right to acquire shares ends. xi If the financial instrument has such a period – please specify this period – for example once every 3 months starting from [date]. xii In case of cash settled instruments the number and percentages of voting rights is to be presented on a delta-adjusted basis (Regulation 17(4) of the Regulations/Article 13(1a) of Directive 2004/109/EC). xiii If the person subject to the notification obligation is either controlled and/or does control another undertaking then the second option applies. xiv The full chain of controlled undertakings, starting with the ultimate controlling natural person or legal entity, has to be presented also in cases in which only on subsidiary level a threshold is crossed or reached and the subsidiary undertaking discloses the notification, as only thus will the markets get a full picture of the group holdings. In the case of multiple chains through which the voting rights and/or financial instruments are effectively held, the chains have to be presented chain by chain leaving a row free between different chains (e.g.: A, B, C, free row, A, B, D, free row, A, E, F etc.). xv The names of controlled undertakings through which the voting rights and/or financial instruments are effectively held have to be presented irrespective of whether the controlled undertakings cross or reach the lowest applicable threshold themselves. xvi Example: Correction of a previous notification.

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 Wednesday October 08, 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 12,486 01/10/2025 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 8/10/2025 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 4 / 5 Part 3A - number and type of +securities the subject of this notification (existing class or new class) where issue has previously been notified to ASX in an Appendix 3B Placement Details ASX +security code and description JHXAM : ORDINARY SHARES Date the +securities the subject of this notification were issued 1/10/2025 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. Issue details Number of +securities 12,486 Were the +securities issued for a cash consideration? In what currency was the cash consideration being paid? USD - US Dollar What was the issue price per +security? USD 0.69380000 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 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 1:1 430,021,535 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 4,607,723 JHXAM : ORDINARY SHARES 149,175,994 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

This appendix is available as an online form Only use this form if the online version is not available Rule 2.8, 3.10.3A to 3.10.3D + See chapter 19 for defined terms 5 February 2024 Page 1 Appendix 2A Application for quotation of securities 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. If you are an entity incorporated outside Australia and you are seeking quotation of a new class of securities that will not have CDIs issued over them, you will need to obtain and provide an International Securities Identification Number (ISIN) for that class. Further information on the requirement for the notification of an ISIN is available from the Create Online Forms page. ASX is unable to create the new ISIN for non-Australian issuers. *Denotes minimum information required for first lodgement of this form, with exceptions provided in specific notes for certain questions. The balance of the information, where applicable, must be provided as soon as reasonably practicable by the entity. Part 1 – Entity and announcement details Question no Question Answer 1.1 *Name of entity We (the entity here named) apply for +quotation of the following +securities and agree to the matters set out in Appendix 2A of the ASX Listing Rules.1 JAMES HARDIE INDUSTRIES PLC 1.2 *Registration type and number Please supply your ABN, ARSN, ARBN, ACN or another registration type and number (if you supply another registration type, please specify both the type of registration and the registration number). ARBN 097829895 1.3 *ASX issuer code JHX 1.4 *This announcement is Tick whichever is applicable. ☐ A new announcement ☒ An update/amendment to a previous announcement ☐ A cancellation of a previous announcement 1.4a *Reason for update Answer this question if your response to Q 1.4 is an update/amendment to previous announcement. To update that no JHXAM shares were transferred to CDIs, rather it was only the issue of 716 new CDIs. 1.4b *Date of previous announcement to this update Answer this question if your response to Q 1.4 is an update/amendment to previous announcement. 22 September 2025 1.4c *Reason for cancellation Answer this question if your response to Q 1.4 is “A cancellation of a previous announcement” N/A 1 Appendix 2A of the Listing Rules includes a warranty that an offer of the securities for sale within 12 months after their issue will not require disclosure under section 707(3) or 1012C(6) of the Corporations Act. If you are in any doubt as to the application of, or the entity’s capacity to give, this warranty, please see ASIC Regulatory Guide 173 Disclosure for on-sale of securities and other financial products and consult your legal adviser.

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 2 1.4d *Date of previous announcement to this cancellation Answer this question if your response to Q 1.4 is “A cancellation of a previous announcement” N/A 1.5 *Date of this announcement 9 October 2025 Part 2 – Type of issue Question No. Question Answer 2.1 *The +securities to be quoted are: Select whichever item is applicable. If you wish to apply for quotation of different types of issues of securities, please complete a separate Appendix 2A for each type of issue. ☐ +Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B ☐ +Securities issued under a +dividend or distribution plan ☐ +Securities issued, transferred or re- classified as a result of options being exercised or other +convertible securities being converted ☐ Unquoted partly paid +securities that have been fully paid up and are now to become quoted fully paid +securities Note: there is no need to apply for quotation of the fully paid securities if the partly paid securities were already quoted ☐ +Restricted securities where the escrow period has expired or is about to expire ☐ +Securities previously issued under an +employee incentive scheme where the restrictions on transfer have ceased or are about to cease ☐ +Securities issued under an +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer ☐ Other [please specify] If you have selected ‘other’ please explain the circumstances of the issue here: 2.1a *Have the +securities to be quoted been issued yet? Yes or No 2.1a.1 *What was their date of issue? Answer this question if your response to Q2.1a is “Yes”. N/A 2.1a.2 *What is their proposed date of issue? Answer this question if your response to Q2.1a is “No”. N/A 2.2a.1 *Date of Appendix 3B notifying the market of the proposed issue of +securities for which quotation is now being sought Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 3 transactions previously announced to the market in an Appendix 3B” 2.2a.2 *Are there any further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B? Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B”. Yes or No 2.2a.2.1 *Please provide details of the further issues of +securities yet to take place to complete the transaction(s) referred to in the Appendix 3B Answer this question if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B” and your response to Q2.2a.2 is “Yes”. Please provide details of the proposed dates and number of securities for the further issues. This may be the case, for example, if the Appendix 3B related to an accelerated pro rata offer with an institutional component being quoted on one date and a retail component being quoted on a later date. N/A 2.2b.1 Date of Appendix 3A.1 lodged with ASX in relation to the underlying +dividend or distribution Answer this question if your response to Q2.1 is “Securities issued under a dividend or distribution plan”. N/A 2.2c.1 Please state the number and type of options that were exercised or other +convertible securities that were converted (including their ASX security code) Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. N/A 2.2c.2 And the date the options were exercised or other +convertible securities were converted Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. Note: If this occurred over a range of dates, enter the first date and last date of the period in which the options were exercised or convertible securities were converted. N/A 2.2c.3 Is this all of the options or other +convertible securities on issue of that type (ie have all of those options now been exercised or have all of those convertible securities now been converted)? Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. Yes or No Note: If you have answered “No”, consider whether you need to lodge an Appendix 3H with ASX notifying ASX of the cessation of some or all of the remaining options or other convertible securities under Listing Rule 3.10.E. This may the case, for example, if options have lapsed because they have passed their expiry date without being exercised, or convertible debt securities have been repaid or redeemed without being converted.

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 4 2.2c.4 The right of the holder of the options or other +convertible securities to receive the +underlying securities is being satisfied by: Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. ☐ An issue of new +securities ☐ A transfer of existing +securities ☐ A reclassification of the +convertible securities as securities in the same class as the +underlying securities 2.2c.5 The underlying +securities being received by the holder are: Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. ☐ Already quoted by ASX ☐ Intended to be, but are not yet, quoted by ASX ☐ Are not, and are not intended to be, quoted by ASX 2.2c.6 Were the options being exercised or other +convertible securities being converted issued under an +employee incentive scheme? Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”. Yes or No 2.2c.7 *Are any of the options being exercised or other +convertible securities being converted held by +key management personnel (KMP) or an +associate? Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted” and your response to Q2.2c.6 is “Yes”. Yes or No 2.2c.7.a *Provide details of the KMP or +associates who are exercising options or converting convertible securities. Answer this question if your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”, your response to Q2.2c.6 is “Yes” and your response to Q2.2c.7 is “Yes”. Repeat the detail in the table below for each KMP involved. If the options or other convertible securities are held by the KMP, repeat the name of the KMP or insert “Same” in “Name of registered holder”. If the options or other convertible securities are held by an associate of a KMP, insert the name of the associate in “Name of registered holder”. Name of KMP [200 characters] Name of registered holder [200 characters] Number of options being exercised or other +convertible securities being converted [16 characters] 2.2d.1 Please state the number and type of unquoted partly paid +securities (including their ASX security code) that have been fully paid up and that are now to become quoted on ASX Answer this question if your response to Q2.1 is “Partly paid securities that have been fully paid up and are now to become quoted fully paid securities”. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 5 2.2d.2 And the date the +securities were fully paid up Answer this question if your response to Q2.1 is “Partly paid securities that have been fully paid up and are now to become quoted fully paid securities”. Note: If this occurred over a range of dates, enter the date the last of the securities was fully paid up. N/A 2.2d.3 Is this all of the partly paid +securities on issue of that type (ie have all of those partly paid securities now been fully paid up)? Answer this question if your response to Q2.1 is “Unquoted partly paid securities that have been fully paid up and are now to become quoted fully paid securities”. Yes or No Note: If you have answered “No”, consider whether you need to lodge an Appendix 3H with ASX notifying ASX of the cessation of some or all of the remaining partly paid securities under Listing Rule 3.10.E. This may the case, for example, if partly paid securities that have not had the call paid by the due date will be cancelled. If you are an NL company, consider also whether you have notification obligations in relation to any forfeiture of the partly paid securities not paid up under Listing Rule 3.12. 2.2e.1 Please state the number and type of +restricted securities (including their ASX security code) where the escrow period has expired or is about to expire Answer this question if your response to Q2.1 is “Restricted securities where the escrow period has expired or is about to expire”. N/A 2.2e.2 And the date the escrow restrictions have ceased or will cease Answer this question if your response to Q2.1 is “Restricted securities where the escrow period has expired or is about to expire”. Note: If this occurred over a range of dates, enter the date the last of the escrow restrictions has ceased or will cease. N/A 2.2f.1 Please state the number and type of +securities (including their ASX security code) previously issued under the +employee incentive scheme where the restrictions on transfer have ceased or are about to cease Answer this question if your response to Q2.1 is “Securities previously issued under an employee incentive scheme where the restrictions on transfer have ceased or are about to cease”. N/A 2.2f.2 And the date the restrictions on transfer have ceased or will cease: Answer this question if your response to Q2.1 is “Securities previously issued under an employee incentive scheme where the restrictions on transfer have ceased or are about to cease”. Note: If this occurred over a range of dates, enter the date the last of the restrictions on transfer has ceased or will cease. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 6 2.2g.1 Please state the number and type of +securities (including their ASX security code) issued under the +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer”. 2.2g.2 *Please attach a document or provide details of a URL link for a document lodged with ASX detailing the terms of the +employee incentive scheme or a summary of the terms. Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer”. 2.2g.3 *Are any of these +securities being issued to +key management personnel (KMP) or an +associate Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer”. Yes or No 2.2g.3.a *Provide details of the KMP or +associates being issued +securities. Answer this question if your response to Q2.1 is “Securities issued under an employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer” and your response to Q2.2g.3 is “Yes”. Repeat the detail in the table below for each KMP involved in the issue. If the securities are being issued to the KMP, repeat the name of the KMP or insert “Same” in “Name of registered holder”. If the securities are being issued to an associate of a KMP, insert the name of the associate in “Name of registered holder”. Name of KMP [200 characters] Name of registered holder [200 characters] Number of +securities [16 characters] 2.2h.1 *Were the +securities issued for a cash consideration? Answer this question if your response to Q2.1 is “Other”. If the securities are being issued for nil cash consideration, answer this question “No”. Yes or No 2.2h.1.a *In what currency was the cash consideration paid? Answer this question if your response to Q2.1 is “Other” and your response to Q2.2h.1 is “Yes”. For example, if the consideration is being paid in Australian Dollars, state AUD. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 7 2.2h.1.b *What was the issue price per +security Answer this question if your response to Q2.1 is “Other” and your response to Q2.2h.1 is “Yes”, and by reference to the issue currency provided in your response to Q2.2h.1.a. Note: you cannot enter a nil amount here. If the securities are being issued for nil cash consideration, answer Q2.2h.1 as “No” and complete Q2.2h.1.c. N/A 2.2h.1.c Please describe the consideration provided for the +securities Answer this question if your response to Q2.1 is “Other” and your response to Q2.2h.1 is “No”. N/A 2.2h.1.d Please provide an estimate (in AUD) of the value of the consideration provided per +security for the +securities to be quoted Answer this question if your response to Q2.1 is “Other” and your response to Q2.2h.1 is “No”. N/A 2.2h.2 *The purpose(s) for which the entity is issuing the +securities is: Answer this question if your response to Q2.1 is “Other”. You may select one or more of the items in the list. ☐ To raise additional working capital ☐ To fund the retirement of debt ☐ To pay for the acquisition of an asset [provide details below] ☐ To pay for services rendered [provide details below] ☐ Other [provide details below] Additional details: 2.2h.3 *Please provide any further information needed to understand the circumstances in which you are applying to have these +securities quoted on ASX, including why the issue of the +securities has not been previously announced to the market in an Appendix 3B You must answer this question if your response to Q2.1 is “Other”. If there is no other information to provide, please answer “Not applicable” or “N/A”. N/A 2.2i *Have these +securities been offered under a +disclosure document or +PDS? Answer this question if your response to Q2.1 is “Other”. Yes or No 2.2i.1 *Date of +disclosure document or +PDS? Answer this question if your response to Q2.1 is “Other” and your response to Q2.2i is “Yes”. Under the Corporations Act, the entity must apply for quotation of the securities within 7 days of the date of the disclosure document or PDS. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 8 2.3 *Any on-sale of the +securities to be quoted within 12 months of their date of issue will comply with the secondary sale provisions in sections 707(3) and 1012C(6) of the Corporations Act by virtue of: Answer this question if your response to Q2.1 is “Other” and your response to Q2.2i is “No”. Note: Under Appendix 2A of the Listing Rules, when the entity applies for quotation of securities, it gives a warranty that an offer of the securities for sale within 12 months after their issue will not require disclosure under section 707(3) or 1012C(6) of the Corporations Act. If you are in any doubt as to the application of, or the entity’s capacity to give, this warranty, please see ASIC Regulatory Guide 173 Disclosure for on-sale of securities and other financial products and consult your legal adviser. ☐ The publication of a +disclosure document or +PDS for the +securities to be quoted ☐ The publication of a cleansing notice under section 708A(5), 708AA(2)(f), 1012DA(5) or 1012DAA(2)(f) ☐ The publication of a +disclosure document or +PDS involving the same class of securities as the +securities to be quoted that meets the requirements of section 708A(11) or 1012DA(11) ☐ An applicable ASIC instrument or class order ☐ Not applicable – the entity has arrangements in place with the holder that ensure the securities cannot be on- sold within 12 months in a manner that would breach section 707(3) or 1012C(6) Note: Absent relief from ASIC, a listed entity can only issue a cleansing notice where trading in the relevant securities has not been suspended for more than 5 days during the shorter of: (a) the period during which the class of securities are quoted; and (b) the period of 12 months before the date on which the relevant securities under the offer were issued. 2.4 *The +class of +securities to be quoted is: Tick whichever is applicable ☐ Additional +securities in a class that is already quoted on ASX ("existing class") ☐ New +securities in a class that is not yet quoted on ASX ("new class")

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 9 Part 3A – number and type of +securities to be quoted (existing class or new class) where issue has previously been notified to ASX in an Appendix 3B Answer the questions in this Part if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B”. Question No. Question Answer 3A.1 *ASX security code & description N/A 3A.2 *Number of +securities to be quoted N/A 3A.3 Any other information the entity wishes to provide about the +securities to be quoted N/A 3A.4 *Provide a distribution schedule for the new +securities according to the categories set out in the left hand column – including the number of recipients and the total percentage of the new +securities held by the recipients in each category. Number of +securities held Number of holders Total percentage of +securities held 1 – 1,000 1,001 – 5,000 5,001 – 10,000 10,001 – 100,000 100,001 and over Answer this question only if you are an ASX Listing (ASX Foreign Exempt Listings and ASX Debt Listings do not have to answer this question), your response to Q2.4 is “new class” and the securities to be quoted have already been issued. Note: if the securities to be quoted have not yet been issued, under listing rule 3.10.5, you will need to provide to ASX a list of the 20 largest recipients of the new securities, and the number and percentage of the new securities received by each of those recipients, and a distribution schedule for the securities when they are issued.

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 10 Part 3B – number and type of +securities to be quoted (existing class) where issue has not previously been notified to ASX in an Appendix 3B Answer the questions in this Part if your response to Q2.1 is anything other than “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B” and your response to Q2.4 is “existing class”. If your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”, the questions in this part relate to the securities being issued, transferred or reclassified as a result of the exercise of the options or the conversion of the convertible securities. If your response to Q2.1 is “Unquoted partly paid securities that have been fully paid up and are now to become quoted fully paid securities”, the questions in this part relate to the fully paid securities arising from that payment up. Otherwise, the questions in this part relate to the securities issued by the entity which are to be quoted on ASX and which are described in the response to Q2.1. Question No. Question Answer 3B.1 *ASX security code & description N/A 3B.2 *Number of +securities to be quoted N/A 3B.3a *Will the +securities to be quoted rank equally in all respects from their issue date with the existing issued +securities in that class? Yes or No 3B.3b *Is the actual date from which the +securities will rank equally (non-ranking end date) known? Answer this question if your response to Q3B.3a is “No”. Yes or No 3B.3c *Provide the actual non-ranking end date Answer this question if your response to Q3B.3a is “No” and your response to Q3B.3b is “Yes”. N/A 3B.3d *Provide the estimated non-ranking end period Answer this question if your response to Q3B.3a is “No” and your response to Q3B.3b is “No”. N/A 3B.3e *Please state the extent to which the +securities do not rank equally: • in relation to the next dividend, distribution or interest payment; or • for any other reason Answer this question if your response to Q3B.3a is “No”. For example, the securities may not rank at all, or may rank proportionately based on the percentage of the period in question they have been on issue, for the next dividend, distribution or interest payment; or they may not be entitled to participate in some other event, such as an entitlement issue. N/ 3B.4 Any other information the entity wishes to provide about the +securities to be quoted

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 11 Part 3C – number and type of +securities to be quoted (new class) where issue has not previously been notified to ASX in an Appendix 3B Answer the questions in this Part if your response to Q2.1 is anything other than “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B” and your response to Q2.4 is “new class”. If your response to Q2.1 is “Securities issued, transferred or re-classified as a result of options being exercised or other convertible securities being converted”, the questions in this part relate to the securities being issued, transferred or reclassified as a result of the exercise of the options or the conversion of the convertible securities. If your response to Q2.1 is “Unquoted partly paid securities that have been fully paid up and are now to become quoted fully paid securities”, the questions in this part relate to the fully paid securities arising from that payment up. Otherwise, the questions in this part relate to the securities issued by the entity which are to be quoted on ASX and which are described in the response to Q2.1. Question No. Question Answer 3C.1 *Security description N/A 3C.2 *Security type Select one item from the list that best describes the securities the subject of this form. This will determine more detailed questions to be asked about the security later in this section. Select “ordinary fully or partly paid shares/units” for stapled securities or CDIs. For interest rate securities, please select the appropriate choice from either “Convertible debt securities” or “Non-convertible debt securities”. Select “Other” for performance shares/units and performance options/rights or if the selections available in the list do not appropriately describe the security being issued. ☐ Ordinary fully or partly paid shares/units ☐ Options ☐ +Convertible debt securities ☐ Non-convertible +debt securities ☐ Redeemable preference shares/units ☐ Wholesale debt securities ☐ Other 3C.3 ISIN code Answer this question if you are an entity incorporated outside Australia and you are seeking quotation of a new class of securities that will not have CDIs issued over them. See also the note at the top of this form. N/A 3C.4 *Number of +securities to be quoted N/A 3C.5a *Will all the +securities issued in this class rank equally in all respects from the issue date? Yes or No 3C.5b *Is the actual date from which the +securities will rank equally (non-ranking end date) known? Answer this question if your response to Q3C.5a is “No”. Yes or No 3C.5c *Provide the actual non-ranking end date Answer this question if your response to Q3C.5a is “No” and your response to Q3C.5b is “Yes”. N/A 3C.5d *Provide the estimated non-ranking end period Answer this question if your response to Q3C.5a is “No” and your response to Q3C.5b is “No”. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 12 3C.5e *Please state the extent to which the +securities do not rank equally: • in relation to the next dividend, distribution or interest payment; or • for any other reason Answer this question if your response to Q3C.5a is “No”. For example, the securities may not rank at all, or may rank proportionately based on the percentage of the period in question they have been on issue, for the next dividend, distribution or interest payment; or they may not be entitled to participate in some other event, such as an entitlement issue. N/A 3C.6 Please attach a document or provide a URL link for a document lodged with ASX setting out the material terms of the +securities to be quoted You may cross-reference a disclosure document, PDS, information memorandum, investor presentation or other announcement with this information provided it has been released to the ASX Market Announcements Platform. N/A 3C.7 *Have you received confirmation from ASX that the terms of the +securities are appropriate and equitable under listing rule 6.1? Answer this question only if you are an ASX Listing. (ASX Foreign Exempt Listings and ASX Debt Listings do not have to answer this question). If your response is “No” and the securities have any unusual terms, you should approach ASX as soon as possible for confirmation under listing rule 6.1 that the terms are appropriate and equitable. Yes or No 3C.8 *Provide a distribution schedule for the new +securities according to the categories set out in the left hand column – including the number of recipients and the total percentage of the new +securities held by the recipients in each category. Number of +securities held Number of holders Total percentage of +securities held 1 – 1,000 1,001 – 5,000 5,001 – 10,000 10,001 – 100,000 100,001 and over Answer this question only if you are an ASX Listing (ASX Foreign Exempt Listings and ASX Debt Listings do not have to answer this question) and the securities to be quoted have already been issued. Note: if the securities to be quoted have not yet been issued, under listing rule 3.10.5, you will need to provide to ASX a list of the 20 largest recipients of the new +securities, and the number and percentage of the new +securities received by each of those recipients, and a distribution schedule for the securities when they are issued. 3C.9a Ordinary fully or partly paid shares/units details Answer the questions in this section if you selected this security type in your response to Question 3C.2. *+Security currency This is the currency in which the face amount of an issue is denominated. It will also typically be the currency in which distributions are declared. N/A *Will there be +CDIs issued over the +securities? Yes or No

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 13 *+CDI ratio Answer this question if you answered “Yes” to the previous question. This is the ratio at which CDIs can be transmuted into the underlying security (e.g. 4:1 means 4 CDIs represent 1 underlying security whereas 1:4 means 1 CDI represents 4 underlying securities). X:Y *Is it a partly paid class of +security? Yes or No *Paid up amount: unpaid amount Answer this question if answered “Yes” to the previous question. The paid up amount represents the amount of application money and/or calls which have been paid on any security considered ‘partly paid’ The unpaid amount represents the unpaid or yet to be called amount on any security considered ‘partly paid’. The amounts should be provided per the security currency (e.g. if the security currency is AUD, then the paid up and unpaid amount per security in AUD). X:Y *Is it a stapled +security? This is a security class that comprises a number of ordinary shares and/or ordinary units issued by separate entities that are stapled together for the purposes of trading. Yes or No 3C.9b Option details Answer the questions in this section if you selected this security type in your response to Question 3C.2. *+Security currency This is the currency in which the exercise price is payable. N/A *Exercise price The price at which each option can be exercised and convert into the underlying security. The exercise price should be provided per the security currency (i.e. if the security currency is AUD, the exercise price should be expressed in AUD). N/A *Expiry date The date on which the options expire or terminate. N/A *Details of the number and type of +security (including its ASX security code if the +security is quoted on ASX) that will be issued if an option is exercised For example, if the option can be exercised to receive one fully paid ordinary share with ASX security code ABC, please insert “One fully paid ordinary share (ASX:ABC)”. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 14 3C.9c Details of non-convertible +debt securities, +convertible debt securities, or redeemable preference shares/units Answer the questions in this section if you selected one of these security types in your response to Question 3C.2. Refer to Guidance Note 34 and the “Guide to the Naming Conventions and Security Descriptions for ASX Quoted Debt and Hybrid Securities” for further information on certain terms used in this section *Type of +security Select one item from the list ☐ Simple corporate bond ☐ Non-convertible note or bond ☐ Convertible note or bond ☐ Preference share/unit ☐ Capital note ☐ Hybrid security ☐ Other *+Security currency This is the currency in which the face value of the security is denominated. It will also typically be the currency in which interest or distributions are paid. N/A Face value This is the principal amount of each security. The face value should be provided per the security currency (i.e. if security currency is AUD, then the face value per security in AUD). N/A *Interest rate type Select one item from the list Select the appropriate interest or dividend rate type per the terms of the security. Definitions for each type are provided in the Guide to the Naming Conventions and Security Descriptions for ASX Quoted Debt and Hybrid Securities ☐ Fixed rate ☐ Floating rate ☐ Indexed rate ☐ Variable rate ☐ Zero coupon/no interest or dividend ☐ Other Frequency of coupon/interest/dividend payments per year Select one item from the list. ☐ Monthly ☐ Quarterly ☐ Semi-annual ☐ Annual ☐ No coupon/interest payments ☐ Other First interest/dividend payment date A response is not required if you have selected “No coupon/interest payments” in response to the question above on the frequency of coupon/interest payments N/A Interest/dividend rate per annum Answer this question if the interest rate type is fixed. % p.a. *Is the interest/dividend rate per annum estimated at this time? Answer this question if the interest rate type is fixed. Yes or No

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 15 If the interest/dividend rate per annum is estimated, then what is the date for this information to be announced to the market (if known) Answer this question if the interest rate type is fixed and your response to the previous question is “Yes”. Answer “Unknown” if the date is not known at this time. N/A *Does the interest rate include a reference rate, base rate or market rate (e.g. BBSW or CPI)? Answer this question if the interest rate type is floating or indexed. Yes or No *What is the reference rate, base rate or market rate? Answer this question if the interest rate type is floating or indexed and your response to the previous question is “Yes”. N/A *Does the interest/dividend rate include a margin above the reference rate, base rate or market rate? Answer this question if the interest rate type is floating or indexed. Yes or No *What is the margin above the reference rate, base rate or market rate (expressed as a percent per annum) Answer this question if the interest rate type is floating or indexed and your response to the previous question is “Yes”. % p.a. *S128F of the Income Tax Assessment Act status applicable to the +security Select one item from the list For financial products which are likely to give rise to a payment to which s128F of the Income Tax Assessment Act applies, ASX requests issuers to confirm the s128F status of the security: • “s128F exempt” means interest payments are not taxable to non-residents; • “Not s128F exempt” means interest payments are taxable to non-residents; • “s128F exemption status unknown” means the issuer is unable to advise the status; • “Not applicable” means s128F is not applicable to this security ☐ s128F exempt ☐ Not s128F exempt ☐ s128F exemption status unknown ☐ Not applicable *Is the +security perpetual (i.e. no maturity date)? Yes or No *Maturity date Answer this question if the security is not perpetual N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 16 *Select other features applicable to the +security Up to 4 features can be selected. Further information is available in the Guide to the Naming Conventions and Security Descriptions for ASX Quoted Debt and Hybrid Securities. ☐ Simple ☐ Subordinated ☐ Secured ☐ Converting ☐ Convertible ☐ Transformable ☐ Exchangeable ☐ Cumulative ☐ Non-Cumulative ☐ Redeemable ☐ Extendable ☐ Reset ☐ Step-Down ☐ Step-Up ☐ Stapled ☐ None of the above *Is there a first trigger date on which a right of conversion, redemption, call or put can be exercised (whichever is first)? Yes or No *If yes, what is the first trigger date Answer this question if your response to the previous question is “Yes”. N/A Details of the number and type of +security (including its ASX security code if the +security is quoted on ASX) that will be issued if the +securities to be quoted are converted, transformed or exchanged (per 1 new +security) Answer this question if the security features include “converting”, “convertible”, “transformable” or “exchangeable”. For example, if the security can be converted into 1,000 fully paid ordinary shares with ASX security code ABC, please insert “1,000 fully paid ordinary shares (ASX:ABC)”. N/A 3C.9d Details of wholesale debt securities Answer the questions in this section if you selected this security type in your response to Question Q3C.2. Refer to Guidance Note 34 and the “Guide to the Naming Conventions and Security Descriptions for ASX Quoted Debt and Hybrid Securities” for further information on certain terms used in this section CFI N/A FISN N/A *+Security currency This is the currency in which the face value of the security is denominated. It will also typically be the currency in which interest or distributions are paid. N/A Total principal amount of class N/A Face value This is the offer / issue price or value at which the security was offered on issue. N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 17 Number of +securities This should be the total principal amount of class divided by the face value N/A *Interest rate type Select the appropriate interest rate type per the terms of the security. Definitions for each type are provided in the Guide to the Naming Conventions and Security Descriptions for ASX Quoted Debt and Hybrid Securities. ☐ Fixed rate ☐ Floating rate ☐ Fixed to floating ☐ Floating to fixed *Frequency of coupon/interest payments per year Select one item from the list. The number of interest payments to be made per year for a wholesale debt security. ☐ Monthly ☐ Quarterly ☐ Semi-annual ☐ Annual ☐ No payments *First interest payment date A response is not required if you have selected “No payments” in response to the question above on the frequency of coupon/interest payments. N/A *Interest rate per annum A response is not required if you have selected “No payments” in response to the question above on the frequency of coupon/interest payments. The rate represents the total rate for the first payment period which may include a reference or base rate plus a margin rate and other adjustment factors where applicable, stated on a per annum basis. If the rate is only an estimate at this time please enter an indicative rate and provide the actual rate once it has become available. % *Maturity date The date on which the security matures. N/A Class type description N/A *S128F of the Income Tax Assessment Act status applicable to the +security Select one item from the list For financial products which are likely to give rise to a payment to which s128F of the Income Tax Assessment Act applies, ASX requests issuers to confirm the s128F status of the security: • “s128F exempt” means interest payments are not taxable to non-residents; • “Not s128F exempt” means interest payments are taxable to non-residents; • “s128F exemption status unknown” means the issuer is unable to advise the status; “Not applicable” means s128F is not applicable to this security ☐ s128F exempt ☐ Not s128F exempt ☐ s128F exemption status unknown ☐ Not applicable 3C.10 Any other information the entity wishes to provide about the +securities to be quoted N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 18 Part 4 – Issued capital following quotation Following the quotation of the +securities the subject of this application, the issued capital of the entity will comprise: Note: the figures provided in the tables in sections 4.1 and 4.2 below are used to calculate the total market capitalisation of the entity published by ASX from time to time. Please make sure you include in the relevant table each class of securities issued by the entity. If you have quoted securities over which CDIs have been issued, please include the number of quoted securities expressed as CDIs in the table in section 4.1 and not the number of quoted securities over which the CDIs have been issued. If some but not all of the entity’s main class of securities are quoted, you should include in the table in section 4.2 any unquoted securities in that class. Restricted securities should only be included in the table in section 4.1 if you are applying to have them quoted because the escrow period for the securities has expired or is about to expire. Otherwise include them in the table in section 4.2. 4.1 *Quoted +securities (total number of each +class of +securities quoted on ASX following the +quotation of the +securities the subject of this application) ASX security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,021,535 (as at 22 Sept 25) 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 JHXAM : ORDINARY SHARES JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 4,607,723 (as at 22 Sept 25) 149,164,224 (as at 22 Sept 25) 269,221 (as at 22 Sept 25)

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 19 Part 5 – Other Listing Rule requirements The questions in this Part should only be answered if you are an ASX Listing (ASX Foreign Exempt Listings and ASX Debt Listings do not need to complete this Part) and your response to Q2.1 is: - “Securities issued under a dividend/distribution plan”; - “Securities issued under an employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer”; or - “Other”. Note that if your response to Q2.1 is “Securities issued as part of a transaction or transactions previously announced to the market in an Appendix 3B”, it is assumed that you will have provided the information referred to in this Part in the Appendix 3B. Question No. Question Answer 5.1 *Are the +securities being issued under an exception in Listing Rule 7.2 and therefore the issue does not need any security holder approval under Listing Rule 7.1? Yes or No 5.1a Enter the number of the applicable exception in Listing Rule 7.2 Answer this question is your response to Q5.1 is “Yes” Note this should be a number between 1 and 17. N/A 5.1a.1 *Does the +dividend or distribution plan meet the requirement of listing rule 7.2 exception 4 that it does not impose a limit on participation? Answer this question if your response to Q5.1 is “Yes” and your response to Q5.1a is “4”. Note: Exception 4 only applies where security holders are able to elect to receive all of their dividend or distribution as securities. For example, Exception 4 would not apply in the following circumstances: 1) The entity has specified a dollar limit on the level of participation e.g. security holders can only participate to a maximum value of $x in respect of their entitlement, or 2) The entity has specified a maximum number of securities that can participate in the plan e.g. security holders can only receive securities in lieu of dividend payable for x number of securities. Yes or No 5.2 *Has the entity obtained, or is it obtaining, +security holder approval for the issue under listing rule 7.1? Answer this question if the response to Q5.1 is “No”. Yes or No 5.2a *Date of meeting or proposed meeting to approve the issue under listing rule 7.1 Answer this question if the response to Q5.1 is “No” and the response to Q5.2 is “Yes”. N/A 5.2b *Are any of the +securities being issued without +security holder approval using the entity’s 15% placement capacity under listing rule 7.1? Answer this question if the response to Q5.1 is “No” and the response to Q5.2 is “No”. Yes or No 5.2b.1 *How many +securities are being issued without +security holder approval using the entity’s 15% placement capacity under listing rule 7.1? Answer this question if the response to Q5.1 is “No”, the response to Q5.2 is “No” and the response to Q5.2b is “Yes”. If the response to Q5.2b is “Yes”, please complete and separately send by email to your ASX listings N/A

This appendix is available as an online form Appendix 2A Application for quotation of securities + See chapter 19 for defined terms 5 February 2024 Page 20 compliance adviser a work sheet in the form of Annexure B to Guidance Note 21 confirming the entity has the available capacity under listing rule 7.1 to issue that number of securities. 5.2c *Are any of the +securities being issued without +security holder approval using the entity’s additional 10% placement capacity under listing rule 7.1A (if applicable)? Answer this question if the response to Q5.1 is “No” and the response to Q5.2 is “No”. Yes or No or n/a 5.2c.1 *How many +securities are being issued without +security holder approval using the entity’s additional 10% placement capacity under listing rule 7.1A? Answer this question if the response to Q5.1 is “No”, the response to Q5.2 is “No” and the response to Q5.2c is “Yes”. If the response to Q5.2c is “Yes”, please complete and separately send by email to your ASX listings compliance adviser a work sheet in the form of Annexure C to Guidance Note 21 confirming the entity has the available capacity under listing rule 7.1A to issue that number of securities. N/A Introduced 01/12/19; amended 31/01/20; 05/06/21; 05/02/24

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 October 09, 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 1,043 02/10/2025 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 9/10/2025 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 4 / 5 Part 3A - number and type of +securities the subject of this notification (existing class or new class) where issue has previously been notified to ASX in an Appendix 3B Placement Details ASX +security code and description JHXAM : ORDINARY SHARES Date the +securities the subject of this notification were issued 2/10/2025 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. Issue details Number of +securities 1,043 Were the +securities issued for a cash consideration? In what currency was the cash consideration being paid? USD - US Dollar What was the issue price per +security? USD 0.69000000 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 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 1:1 430,021,535 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 4,670,265 JHXAM : ORDINARY SHARES 149,164,551 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 1 / 7 Announcement Summary Entity name JAMES HARDIE INDUSTRIES PLC Announcement Type New announcement Date of this announcement Friday October 10, 2025 The +securities to be quoted are: Total number of +securities to be quoted ASX +security code Security description Number of +securities to be quoted Issue date JHX CHESS DEPOSITARY INTERESTS 1:1 54,757 03/10/2025 Refer to next page for full details of the announcement +Securities issued under an +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 2 / 7 Part 1 - Entity and announcement details 1.1 Name of entity JAMES HARDIE INDUSTRIES PLC We (the entity named above) apply for +quotation of the following +securities and agree to the matters set out in Appendix 2A of the ASX Listing Rules. 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 10/10/2025 New announcement

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 3 / 7 Part 2 - Type of Issue 2.1 The +securities to be quoted are: 2.2 The +class of +securities to be quoted is: Additional +securities in a class that is already quoted on ASX ("existing class") +Securities issued under an +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 4 / 7 Part 3B - number and type of +securities to be quoted (existing class) where issue has not previously been notified to ASX in an Appendix 3B Additional +securities to be quoted in an existing class issued under an +employee incentive scheme FROM (Existing Class) ASX +security code and description No security currently exists FROM (Existing Class) +Security description Ordinary Shares/CDIs TO (Existing Class) ASX +security code and description JHX : CHESS DEPOSITARY INTERESTS 1:1 Please state the number of +securities issued under the +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer 54,757 Please provide details of a URL link for a document lodged with ASX detailing the terms of the +employee incentive scheme or a summary of the terms Refer to the 2001 Plan: https://ir.jameshardie.com.au/public/download.jsp?id=5562 Are any of these +securities being issued to +key management personnel (KMP) or an +associate Issue date 3/10/2025 Will the +securities to be quoted rank equally in all respects from their issue date with the existing issued +securities in that class? Yes No

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 5 / 7 Issue details Number of +securities to be quoted 54,757 Are the +securities being issued for a cash consideration? In what currency is the cash consideration being paid? USD - US Dollar What is the issue price per +security? USD 0.69380000 Any other information the entity wishes to provide about the +securities to be quoted Yes

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 6 / 7 Part 4 - Issued capital following quotation Following the quotation of the +securities the subject of this application, the issued capital 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 quoted on ASX following the +quotation of the +securities subject of this application) ASX +security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,076,292 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 4,670,265 JHXAM : ORDINARY SHARES 149,175,994 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 7 / 7 Part 5 - Other Listing Rule requirements 5.1 Are the +securities being issued under an exception in Listing Rule 7.2 and therefore the issue does 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 13 Yes

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 1 / 7 Announcement Summary Entity name JAMES HARDIE INDUSTRIES PLC Announcement Type New announcement Date of this announcement Friday October 17, 2025 The +securities to be quoted are: Total number of +securities to be quoted ASX +security code Security description Number of +securities to be quoted Issue date JHX CHESS DEPOSITARY INTERESTS 1:1 120 10/10/2025 Refer to next page for full details of the announcement +Securities issued under an +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 2 / 7 Part 1 - Entity and announcement details 1.1 Name of entity JAMES HARDIE INDUSTRIES PLC We (the entity named above) apply for +quotation of the following +securities and agree to the matters set out in Appendix 2A of the ASX Listing Rules. 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 17/10/2025 New announcement

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 3 / 7 Part 2 - Type of Issue 2.1 The +securities to be quoted are: 2.2 The +class of +securities to be quoted is: Additional +securities in a class that is already quoted on ASX ("existing class") +Securities issued under an +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 4 / 7 Part 3B - number and type of +securities to be quoted (existing class) where issue has not previously been notified to ASX in an Appendix 3B Additional +securities to be quoted in an existing class issued under an +employee incentive scheme FROM (Existing Class) ASX +security code and description No security currently exists FROM (Existing Class) +Security description Ordinary Shares/CDIs TO (Existing Class) ASX +security code and description JHX : CHESS DEPOSITARY INTERESTS 1:1 Please state the number of +securities issued under the +employee incentive scheme that are not subject to a restriction on transfer or that are to be quoted notwithstanding there is a restriction on transfer 120 Please provide details of a URL link for a document lodged with ASX detailing the terms of the +employee incentive scheme or a summary of the terms Refer to the 2001 Plan: https://ir.jameshardie.com.au/public/download.jsp?id=5562 Are any of these +securities being issued to +key management personnel (KMP) or an +associate Issue date 10/10/2025 Will the +securities to be quoted rank equally in all respects from their issue date with the existing issued +securities in that class? Yes No

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 5 / 7 Issue details Number of +securities to be quoted 120 Are the +securities being issued for a cash consideration? In what currency is the cash consideration being paid? USD - US Dollar What is the issue price per +security? USD 19.24400000 Any other information the entity wishes to provide about the +securities to be quoted Yes

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 6 / 7 Part 4 - Issued capital following quotation Following the quotation of the +securities the subject of this application, the issued capital 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 quoted on ASX following the +quotation of the +securities subject of this application) ASX +security code and description Total number of +securities on issue JHX : CHESS DEPOSITARY INTERESTS 1:1 430,076,412 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 4,670,265 JHXAM : ORDINARY SHARES 149,177,753 JHXAL : OPTION EXPIRING 03-NOV-2027 EX $33.05 269,221

Appendix 2A - Application for quotation of securities Appendix 2A - Application for quotation of securities 7 / 7 Part 5 - Other Listing Rule requirements 5.1 Are the +securities being issued under an exception in Listing Rule 7.2 and therefore the issue does 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 13 Yes