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/EC^[i]

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ^[ii]:

CRH 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 obligation^[iii]:

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 reached^[v]: 19/12/2025

6. Date on which issuer notified: 22/12/2025

7. Threshold(s) that is/are crossed or reached:

Holdings for BlackRock, Inc. have gone above 6%.

8. Notified details:

9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable^[xviii]:

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:

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 22 December 2025

View source version on businesswire.com: https://www.businesswire.com/news/home/20251223616028/en/

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