ALU Alumasc Group Plc

The Alumasc Group plc

(the "Company")

6 November 2024

PDMR/PCA dealing

The Company announces that it received notification on 5 November 2024 that Mrs. Luan Leaf, a person closely associated to Mr Michael Leaf, an Executive Director, exercised 10,000 options over ordinary shares of 12.5p each ("Ordinary Shares") at a price of 225.66p each, held under the 2021 Alumasc Employee Share Option Scheme.  Following the exercise Mrs. Leaf sold 8,370 of the resulting Ordinary Shares to cover tax, national insurance and the option exercise price.

Following the above Michael Leaf's total holding (including shares held by his Person Closely Associated) was:

Settlement of the award was made from existing Ordinary Shares held by the Alumasc Employee Benefit Trust.

The below notification, made in accordance with the requirements of the EU Market Abuse Regulation, gives further detail of the transactions.

Notification and public disclosure of transactions by persons discharging

managerial responsibilities and persons closely associated with them

Enquiries:

Notes to Editors:

Alumasc is a UK-based supplier of premium sustainable building products, systems and solutions. Almost 80% of Group sales are driven by building regulations and specifications (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: Water Management; Building Envelope; and Housebuilding Products.