10 June 2025

Grafton Group plc (the 'Company')

Correction - Voting Rights and Capital

This announcement is a correction of the Total Voting Rights and Capital announcement published on 02 June 2025 (RNS 0037L). The share capital and total number of voting rights were misstated by 9,607 shares. All other details remain unchanged. The full amended text is shown below which now states the correct figures for the share capital and total voting rights.

In conformity with Regulation 20 of the Transparency (Directive 2004/109/EC) Regulations 2007, the Company announces that:

The total number of Ordinary Shares of €0.05 each in issue on 31 May 2025 was 195,203,493. Each Ordinary Share carries one vote. The Company holds 500,000 Ordinary Shares in treasury. Therefore, the total number of voting rights is 194,703,493.

The above figure of 194,703,493 may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in the Company under the Transparency (Directive 2004/109/EC) Regulations 2007 and the Transparency Rules.

Rebecca McAleavey

Deputy Company Secretary

Grafton Group plc

Ph: +353 1 216 0600