Grainger PLC

Share Issue/Capital Change • Dec 17, 2025

Investor Code

16 December 2025

Dear Shareholder,

Grainger plc Notice of Annual General Meeting (AGM)

Thank you for agreeing to receive your Shareholder communications from Grainger plc electronically. I am pleased to let you know that the following documents are available to view on the Investor pages on our website: corporate.graingerplc.co.uk/investors

• Notice of our 2026 Annual General Meeting (AGM)
• Annual Report and Accounts 2025
• Revised and updated 2017 LTIP Rules

Please read these documents carefully. If you have any doubt about the action you should take, please contact your stockbroker, bank manager, solicitor, accountant or independent advisor.

The 2026 AGM is due to take place at 2.00pm on 4 February 2026 at Grainger plc, Citygate, St James' Boulevard, Newcastle upon Tyne NE1 4JE.

If you wish to attend the AGM, please print the Notice of AGM and bring it with you as it will speed up your entry into the meeting. Shareholder attendance at the AGM is in person. In addition, as is our usual practice, the Company also provides facilities so that Shareholders can ask questions of the Board remotely, which will be answered and published on the Company's website in advance

Shareholders are strongly urged to cast their votes by proxy in advance of the AGM in order to ensure that their votes are counted. All votes will be held by poll so that all proxy votes are included.

Online Proxy Voting

of the AGM.

If you would like to vote on the resolutions, please send us your vote by completing your proxy form online through the Shareholder portal at signalshares.com. The person you appoint need not be a Shareholder of the Company.

You will require your username and password in order to log in and vote. If you have forgotten your username or password you can request a reminder via the Shareholder portal. If you haven't previously registered to use the portal you will require your investor code (IVC) which can be found above.

The completed form needs to be received by our registrars, MUFG Corporate Markets before 2.00pm on 2 February 2026. Alternatively, you can vote via the Vote+ app, Proxymity, or CREST (please refer to the notes to the Notice of AGM).

Voting by proxy does not affect your right to attend the AGM and vote in person. If you have any questions regarding voting online or finding documents on the website, please contact MUFG Corporate Markets at shareholderenquiries@cm.mpms.mufg.com or call the Shareholder Helpline on 0371 664 0300 between 9.00am – 5.30pm, Monday to Friday excluding public holidays in England and Wales (calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate).

Yours faithfully

Sapna FitzGerald Company Secretary Grainger plc