Notice of AGM and Posting of Annual Report

Following the release on 1 June 2026 of the Company's 2025 Full Year Results, Invinity Energy Systems plc (AIM: IES), a leading global manufacturer of utility-grade energy storage, announces that the Company's Annual General Meeting ("AGM" or "the Meeting") will be held at The Lothbury Room, LG Floor, 131 Finsbury Pavement, London EC2A 1NT at 12.00 p.m. (UK Time) on Thursday 25 June 2025.

Notice of the AGM containing further information, along with the form of proxy, has been published on the Company's shareholder documents portal. For those who have opted to receive printed communications, hard copies of the Notice of the AGM and the Annual Report will be posted to shareholders shortly.

Voting

You are strongly encouraged to use your proxy vote. Shareholders can vote electronically via the Investor Centre app or by visiting https://uk.investorcentre.mpms.mufg.com/.

We encourage you to appoint the Chair of the Meeting as your proxy so that your vote will be counted if ultimately you (or any other proxy you might otherwise appoint) are not able to attend. Submitting a proxy will not preclude you from attending and voting at the meeting in person if you wish to do so.

Attending the Meeting

Due to capacity constraints, shareholders wishing to attend the AGM are requested to RSVP via email to companysecretary@invinity.com no later than 5.00 p.m. on Tuesday 23 June 2026.