Commencement of Share Buyback Programme

AGREED FORM NOTIFICATION OF SHARE REPURCHASE PROGRAMME

London Stock Exchange Group plc

FOR IMMEDIATE RELEASE

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY, IN OR INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION

26 February 2026

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London Stock Exchange Group plc - Commencement of Share Buyback Programme

London Stock Exchange Group plc (the "Company") announces today that, further to its announcement today of the Company's preliminary results for the financial year ended 31 December 2025, the Company will commence a share buyback programme to purchase ordinary shares of 679/86 pence each in the Company ("Shares") with an aggregate value of up to £750,000,000 million (the "Buyback Programme").

In connection with the Buyback Programme, the Company has entered into an agreement with Morgan Stanley & Co. International Plc ("Morgan Stanley") in relation to the purchase of Shares by Morgan Stanley, acting as riskless principal and in accordance with certain pre-set parameters, under which the Company has instructed Morgan Stanley to purchase Shares with a value of up to £750,000,000. Purchases will commence immediately and will end no later than 29 May 2026. Morgan Stanley will make trading decisions in relation to the Buyback Programme independently of, and uninfluenced by, the Company. Any purchase of Shares by Morgan Stanley contemplated by this announcement will be carried out on the London Stock Exchange and/or on Turquoise Equities Trading. Shares purchased by Morgan Stanley will be on-sold by Morgan Stanley to the Company, and any purchases of Shares by the Company from Morgan Stanley will be carried out on the London Stock Exchange, with the Shares purchased by the Company to be cancelled upon settlement. The arrangements between the Company and Morgan Stanley are subject to customary termination rights in favour of the Company and Morgan Stanley. The purpose of the Buyback Programme is to reduce the share capital of the Company. 

Any purchases under the Buyback Programme shall take place in accordance with (and subject to the limits prescribed by) the Company's general authority to repurchase Shares granted by its shareholders at the annual general meeting on 1 May 2025 (the "2025 Authority") and any further authority to repurchase Shares as may be granted by its shareholders from time to time under Chapter 9 of the UK Listing Rules. The maximum number of Shares that the Company is authorised to purchase under the 2025 Authority is 28,112,224. Purchases of Shares by Morgan Stanley shall take place in accordance with the Market Abuse Regulation (EU) No 596/2014 (including the delegated and implementing acts adopted under it) and the Commission Delegated Regulation (EU) No 2016/1052 with regard to regulatory technical standards for the conditions applicable to buyback programmes and stabilisation measures (in each case as they form part of the law of the United Kingdom by virtue of the European Union (Withdrawal) Act 2018, as implemented, retained, amended, extended, re-enacted or otherwise given effect in the United Kingdom from 1 January 2021 and as amended or supplemented in the United Kingdom thereafter). The Company will make further regulatory announcements to shareholders in respect of purchases of Shares under the Buyback Programme as they occur.

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For further information, please contact:

InvestorsPeregrine Riviere / Chris Turner - Investor Relations [email protected] 

MediaLucie Holloway / Rhiannon Davies - External Communications+44 (0) 20 7797 1222 [email protected] www.lseg.com