Result of Meeting, Board Changes and TVR

11 November 2026

Invinity Energy Systems plc

("Invinity" or the "Company")

Result of General Meeting, Board Changes and Total Voting Rights

Invinity Energy Systems plc (AIM: IES), a global leader in vanadium flow battery technology, announces that all resolutions relating to the Company’s recently announced fundraise were passed at the Company’s General Meeting held today at 11.30 a.m. The result of the poll voting (including all proxies) is detailed below.

*Any proxy appointments, which gave discretion to the Chairman, have been included in the ‘For’ votes total.

Total Voting Rights

An application has been made to the London Stock Exchange for the 250,000,000 Fundraising Shares to be admitted to trading on AIM at 8.00 a.m. on 12 November 2026.

Upon Admission, the issued ordinary share capital of the Company will be 819,613,393 Ordinary Shares. This figure may be used by shareholders in the Company 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 share capital of the Company under the FCA's Disclosure Guidance and Transparency Rules.

Board Changes

Further to the Board’s stated intention to review its composition, as announced on 20 October 2026, the Company announces the following changes to the Board, completing the planned Chair succession process and continuing the evolution of the Board’s composition to support the Company’s next phase of development.

As previously announced, Neil O’Brien informed the Board of his intention to retire as Non-Executive Chair following a formal succession process. With the transition to his successor now complete, Neil O’Brien will retire from the Board and Volker Beckers, currently a Non-Executive Director of the Company, will become Non-Executive Chair with immediate effect.

Additionally, after five years of service, Kristina Peterson has informed the Board of her intention to step down as a Non-Executive Director with immediate effect. The Board would like to thank her for her contribution to Invinity, including the extensive U.S. energy and infrastructure financing experience she has brought to the Company during her tenure.

The Company is also pleased to announce the appointment of Jonathan Keeling as a Non-Executive Director with immediate effect. Jonathan is an experienced corporate broker and investor with significant experience across the energy sector and growth companies. He was previously Chief Executive Officer of Arden Partners Limited, a corporate broking firm, where he advised a number of companies in the energy sector. He is also the majority owner of Next Gen Mobility Limited, an investment company and shareholder in Invinity.

Further information in relation to Jonathan Keeling’s appointment, as required pursuant to AIM Rule 17 and Schedule Two, paragraph (g) of the AIM Rules for Companies, is set out later in this announcement.

Volker Beckers, Non-Executive Chair at Invinity said:

“On behalf of the Board, I would like to thank Neil O’Brien for the significant contribution he has made to Invinity over his many years of service to the Company. His personal dedication and passion for the energy storage industry have been a constant throughout that time, and we wish him every success for the future. I would also like to thank Kristina Peterson for the experience and insight she has brought to Invinity and her valuable contribution to the Board over the past five years, as well as welcome Jonathan Keeling to the Board. His extensive capital markets and growth company experience will be highly valuable as Invinity enters the next stage of its development.

“I am very excited to be taking on the role of Chair at what I believe is an important moment in the Company’s development. Over the past four months, I have had the opportunity to spend significant time with Invinity’s highly skilled team and to meet many of the Company’s key partners, investors and customers. Those conversations have reinforced my conviction in the enormous potential of the business, underpinned by differentiated technology, strong capabilities and significant opportunities ahead. I look forward to working closely with the Board and management team to convert that potential into tangible progress and long-term value for our shareholders.

“As we look ahead, I believe there is an opportunity to build on Invinity’s existing strengths while continuing to evolve the way we govern and develop the business. I am focused on ensuring strong alignment between the Board and our shareholders, and on ensuring that our governance meets the highest standards as the Company develops. I look forward to engaging closely with our shareholders and other key stakeholders in the months and years ahead, and to ensuring that their perspectives help inform our approach as we govern and grow the business.”

Further Information

The following details in relation to the appointment of Jonathan Keeling are disclosed in accordance with AIM Rule 17 and Schedule Two, paragraph (g) of the AIM Rules:

Jonathan Blanshard Keeling (aged 63) holds or has held the following directorships and/or partnerships in the past five years.

Mr Keeling is either directly or indirectly interested in a total of 64,240,891 shares in Invinity, equating to approximately 7.84% of the issued share capital, as enlarged by the Fundraising:

*Artha Global Opportunities Fund is an Indian investment fund managed by Artha Bharat Investment Managers IFSC LLP and an existing shareholder in Invinity directly with a holding equating to 6.26% of the issued share capital, as enlarged by the Fundraising.

There is no further information to be disclosed in relation to Jonathan Keeling's appointment pursuant to AIM Rule 17 or Schedule Two, paragraph (g) (i)-(viii) of the AIM Rules for Companies.

Capitalised terms used but not otherwise defined in this announcement shall have the same meanings as those given to them in the circular published by the Company on 23 October 2026.

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Notes to Editors

Invinity Energy Systems plc (AIM: IES) is a world-leading manufacturer of vanadium flow batteries for energy storage. Built in our factories in the UK and Canada, the Company's proven, commercialised, flexible energy storage technology has been deployed at scale and dispatched gigawatt-hours of electricity for customers across the world.

Invinity's safe, scalable and durable battery technology is a trusted and safer alternative to lithium-ion batteries. Endurium VFBs are engineered for heavy-duty, high throughput applications, they don't wear out, cannot catch fire and are designed to be operated for 30 years or more. Our products address the challenges of our global energy system, unlocking the power of renewable generation by delivering energy storage without limits.

To find out more, visit invinity.com, sign up to our monthly Investor Newsletter here or contact Investor Relations on +44 (0)20 4551 0361 or [email protected].