UK Listing Rule 6.4.9R(2) Disclosure

19 May 2026

Grainger plc

("Grainger" or the "Company")

UK Listing Rule 6.4.9R(2) Disclosure

In accordance with UK Listing Rule 6.4.9R(2), Grainger announces that Helen Gordon, Chief Executive Officer, has been appointed as Senior Independent Non-Executive Director of Big Yellow Group PLC with effect from 1 June 2027.

For further information, please contact:

The Company Secretarial team at: CoSec@graingerplc.co.uk