BLOCK LISTING SIX MONTHLY RETURN

18 June 2026

BLOCK LISTING SIX MONTHLY RETURN

In accordance with UK Listing Rule 20.6.6R, Spirax Group plc makes the following notification in relation to its block listing of ordinary shares.

Enquiries:

Celine Barroche, Group General Counsel & Company Secretary

Tel: 01242 535035

About Spirax Group plc

Spirax Group is positioned to play a critical role in enabling the industrial transition to net zero, aligned to our Purpose to create sustainable value for all our stakeholders as we engineer a more efficient, safer and sustainable world. We put solving customers' problems at the heart of our total solutions approach. Our global thermal energy and fluid technology solutions improve operating efficiency and safety in our customers' critical industrial processes. Our new-to-world decarbonisation* solutions will use our proprietary technologies to electrify boilers, for the raising of steam, as well as the electrification of other critical industrial process heating applications.

Spirax Group comprises three strong and aligned Businesses: Steam Thermal Solutions helps customers control and manage steam within their mission critical industrial applications, such as cleaning, sterilising, cooking and heating. We are helping to put food safely on the world's tables and keeping our hospitals running. Electric Thermal Solutions has proprietary technologies that deliver electrification solutions at scale in industrial settings, including for the raising of steam, supporting our customers to achieve their net zero goals. We also deliver freeze protection and defrost solutions critical to aviation and space industries and ensure thermal uniformity in Semiconductor chip manufacturing to power the critical electronic systems we rely on. Watson‐Marlow Fluid Technology Solutions is engineering vital fluid technology solutions that optimise the efficient use of resources and support advancements in global health, such as lifesaving vaccines and gene therapies.

Spirax Group is headquartered in Cheltenham (UK). We have over 30 strategically located manufacturing plants around the world and are committed to creating a safe and inclusive working culture for our 10,000 colleagues, operating in nearly 70 countries and serving over 100,000 customers globally. 

The Company's shares have been listed on the London Stock Exchange since 1959 (symbol: SPX) and we are a constituent of the FTSE 100 and the FTSE4Good Indexes.

* Eliminates scopes 1 and 2 greenhouse gas emissions when connected to a green electricity source.

Further information can be found at spiraxgroup.com

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