Correction to Dividend Election Date (DRIP)

14 May 2026

Grainger plc

("Grainger" or the "Company")

Interim Dividend for the year ending 30 September 2026 - Correction to Dividend

Re-investment Plan ("DRIP") Election Date

The Company refers to its Half-year Financial Results announcement released at 7.00am today under RNS Number 2324E (the "Announcement").

The Announcement incorrectly stated that the final date for elections under the DRIP was 14 May 2026. The correct final date for DRIP elections in respect of the 2026 interim dividend is 12 June 2026.

All other details relating to the interim dividend remain unchanged.

For further information, please contact:

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