PRESS RELEASE

Sale of Aerostructures business and confirmation of share buyback programme

5 January 2026

Senior plc ("Senior" or the "Group"), an international manufacturer of high technology components and systems, is pleased to announce that it completed the sale of its Aerostructures business to Sullivan Street Partners on 31 December 2025 (the "Transaction"), marking a significant milestone in the delivery of the Group's strategy to become a leading global fluid conveyance and thermal management company.

As previously announced, and consistent with its capital allocation policy, Senior will use the initial net cash proceeds of the Transaction to reduce net debt and fund a £40m share buyback programme.  The share buyback programme is expected to commence following completion of the closed period upon the announcement of Senior's full year results on 2 March 2026.

David Squires, Chief Executive of Senior, commented:

"The completion of this transaction marks a pivotal moment for Senior as we deliver on our strategy to become a market-leading fluid conveyance and thermal management business, supplying highly engineered products and systems to blue chip customers in diverse and attractive growth markets with high barriers to entry."

"Senior is well positioned to deliver above-market growth, increasing margins, and enhanced returns on capital with strong operating cash flow generation.  We remain confident in our ability to create sustainable long-term value for our shareholders as we execute against our strategy."

Further information

About Senior

Senior is a FTSE 250 international engineering and manufacturing Group with operations in 10 countries.  It is listed on the main market of the London Stock Exchange (symbol SNR).  Senior's Purpose is "we help engineer the transition to a sustainable world for the benefit of all our stakeholders".  Senior designs and manufactures high technology components and systems for the principal original equipment producers in the worldwide aerospace & defence, land vehicle and power & energy markets.  Further information on Senior plc may be found at: www.seniorplc.com