21 July 2025

THE ALUMASC GROUP PLC

("Alumasc" or "the Company")

 Notice of Full Year Results and Investor Presentation

Alumasc, the premium sustainable building products, systems and solutions group, will publish its audited results for the 12 months ended 30 June 2025 ("Full Year Results") on Tuesday 2 September 2025.

Paul Hooper, Chief Executive, and Simon Dray, Group Finance Director, will provide an in-person presentation to sell-side analysts at 9am BST on Tuesday 2 September 2025, this will also be available via Zoom. If you would like to attend, please RSVP to [email protected].

There will also be a live presentation relating to the Company's Full Year Results via the Investor Meet Company platform on Tuesday 2 September 2025 at 3pm BST. The presentation is open to all existing and potential shareholders. Questions can be submitted in advance via your Investor Meet Company dashboard up until 9am the day before the meeting or at any time during the live presentation.

Investors can sign up free of charge to Investor Meet Company and meet Alumasc via:

https://www.investormeetcompany.com/alumasc-group-plc/register-investor

Investors who already follow ALUMASC GROUP PLC on the Investor Meet Company platform will automatically be invited.

A recording of the presentation and a copy of the slides will be available following the event on the Company's website at https://www.alumasc.co.uk/investor-relations

END

Enquiries:

The Alumasc Group plc

Paul Hooper (Chief Executive)                                  +44 (0)1536 383844

Simon Dray (Group Finance Director)

Helen Ashton (Group Company Secretary)           

Cavendish (Nominated Adviser and Joint Broker)

Julian Blunt                                                               +44 (0)207 908 6000

Edward Whiley

Tim Redfern (ECM)   

Peel Hunt (Joint Broker)                                         

Mike Bell                                                                   +44 (0)207 418 8831 

Ed Allsopp                                                      

Camarco:

Ginny Pulbrook                                                      +44 (0)203 757 4980

Tilly Butcher                                                    [email protected]

LEI: 2138002MV11VKZFJ4359

About Alumasc:

Alumasc is a UK-based supplier of premium building products, systems and solutions. Almost 80% of group sales are driven by building regulations and specifications (developers/housebuilders, architects and structural engineers) because of the performance characteristics offered.

The Group has three business segments with strong positions and brands in their individual markets. The three segments are: Building Envelope; Water Management; and Housebuilding Products.