11 March 2026

Porvair plc

("Porvair" or the "Group" or the "Company")

Posting of 2025 Annual Report & Accounts and
Publication of the Notice of Annual General Meeting

Porvair has, today, made its Annual Report & Accounts for the year ended 30 November 2025 (the "Annual Report & Accounts") and its Notice of the 2026 Annual General Meeting (the "Notice of AGM") available to shareholders on its website at www.porvair.com/investors. It will, today, post or email a Notice of Availability letter or the Annual Report & Accounts and the Notice of AGM (as applicable) to its shareholders.

The Annual General Meeting will be held at 11.00 am on Tuesday 14 April 2026 at the offices of Peel Hunt LLP, 100 Liverpool Street, London, EC2M 2AT. Please note that the location has been updated from that disclosed in the Full Year Results announcement released on 9 February 2026.

To ensure their vote is counted, shareholders are encouraged to appoint a proxy in advance of the meeting by following the instructions in the Notice of AGM. 

Copies of the Annual Report & Accounts and the Notice of AGM will be submitted to the National Storage Mechanism and will shortly be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

In accordance with DTR 6.3.5(1A), the unedited full text of the regulated information required to be made public under DTR 4.1 is contained within the Annual Report & Accounts.

The text of the email Notice of Availability is shown in the appendix to this release.

For further information, please contact:

LEI: 213800ECKHS8LAQO3C45

Notes to editors

Porvair plc

Porvair is a group of specialist filtration, laboratory and environmental technology businesses. Its businesses design and manufacture a range of bespoke consumable filtration products that are used in a range of niche filtration markets. It operates in three divisions: Aerospace & Industrial; Laboratory; and Metal Melt Quality.

The text of the email Notice of Availability letter

The Annual Report & Accounts for the year ended 30 November 2025 is now available. This can be accessed from our website: www.porvair.com. The Investor tab on the website includes Company reports and presentations and has a range of other shareholder services that you may find useful.

Annual General Meeting

The Company's Annual General Meeting ("AGM") will be held at 11.00 am on Tuesday 14 April 2026 at the offices of Peel Hunt LLP, 100 Liverpool Street, London, EC2M 2AT. The purpose of the AGM is to seek shareholders' approval for the resolutions set out in the Notice of the AGM.

The Notice of the 2026 AGM has now been published on the Company's website at www.porvair.com/investors/agm. The Directors consider that the proposed resolutions contained in the Notice of AGM are in the best interests of the Company and shareholders as a whole and unanimously recommend that you vote in favour of them, as they intend to do in respect of their own shareholdings.

The AGM is an important event in the Company's corporate calendar. It provides the Board with an opportunity to engage with shareholders. We encourage you to attend to meet the Board and find out more about the Company.

If you have questions which you would like to discuss in advance of the AGM, please email them to me at [email protected] by no later than 11.00 am on Friday 10 April 2026. I will pass your questions on to the appropriate person at the Company, who will endeavour to respond as soon as practicable. Responses will either be made by return email or published on our investors' website at www.porvair.com/investors, as deemed appropriate by the Board.

Proxy appointments

You will not receive a hard copy form of proxy for the 2026 AGM in the post. Instead, you are able to appoint a proxy electronically using the link https://uk.investorcentre.mpms.mufg.com. You will need to log into your Investor Centre account, or register if you have not previously done so. Once you have setup your account you will need to add your shareholding by clicking 'Add Holding' in the 'Portfolio' section and following the on-screen instructions. You will require your Investor Code (IVC) to add your shareholding. You can find your IVC on your share certificate or by contacting our Registrar, MUFG Corporate Markets.

Appointing a proxy prior to the AGM does not affect your right to attend the AGM and vote in person should you wish. Proxy appointments must be received no later than 11.00 am on Friday 10 April 2026.

If you need help with appointing a proxy online, or would like to be sent a hard copy proxy form, please contact our Registrar, MUFG Corporate Markets, by telephone on +44 (0) 371 664 0300 or by email at [email protected]. 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. Lines are open between 9.00 am - 5.30 pm, Monday to Friday excluding public holidays in England and Wales. If you are an institutional investor, you may also be able to appoint a proxy electronically via the Proxymity platform, a process which has been agreed by the Company and approved by the Registrar. For further information regarding Proxymity, please go to www.proxymity.io.

Thank you for your continued support as a shareholder of Porvair plc.