5 October 2026

BAE Systems plc

Transaction in own shares

BAE Systems plc (the ''Company'') announces that, in accordance with the terms of its share repurchase programme announced on 2 August 2023 (the ''Buyback Programme'') and following the announcement on 22 June 2026 in relation to the initiation of the third tranche (the ''Third Tranche'') of the Buyback Programme, it has purchased for cancellation the following number of its ordinary shares of 2.5 pence each on the London Stock Exchange from J.P. Morgan Securities plc (''JPMS plc''):

The Company intends to cancel all of the purchased ordinary shares.

In accordance with Article 5(1)(b) of the Market Abuse Regulation (EU) No 596/2014 (as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018, as amended), a full breakdown of the individual purchases of ordinary shares made by JPMS plc on behalf of the

Company can be found at:

http://www.rns-pdf.londonstockexchange.com/rns/6179X_1-2026-10-5.pdf

In relation to the Third Tranche, the Company has purchased 7,322,968 ordinary shares in aggregate at a volume weighted average price of 1,992.31p per ordinary share.

This announcement does not constitute, or form part of, an offer or any solicitation of an offer for securities in any jurisdiction.

This announcement will also be available on the Company's website at:

https://investors.baesystems.com/regulatory-news

- ENDS -

For further information, please contact:

Legal Entity Identifier (LEI): 8SVCSVKSGDWMW2QHOH83