REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

26/11/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
26 November 2025

LEI number: 213800ZBKL9BHSL2K459

OSB GROUP PLC (the “Company”) 
Transaction in Own Shares

The Company announces that on 25 November 2025 it had purchased a total of
7,398 of its ordinary shares of £0.01 each (the "ordinary shares") on the
London Stock Exchange, CBOE BXE and CBOE CXE, through the Company's broker
Citigroup Global Markets Limited as detailed below. The repurchased ordinary
shares will be cancelled.

                                                          London Stock Exchange  CBOE BXE  CBOE CXE  
 Number of ordinary shares purchased                      7,398                  -         -         
 Highest price paid (per ordinary share)                  545.00p                -         -         
 Lowest price paid (per ordinary share)                   543.00p                -         -         
 Volume weighted average price paid (per ordinary share)  544.47p                -         -         

The purchases form part of the Company’s share buyback programme announced
on 13 March 2025.

Following settlement of the above purchases and cancellation of the purchased
ordinary shares, the Company's total number of ordinary shares in issue shall
be 356,545,749 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 356,545,749.

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 as
incorporated into and implemented under English law (including by virtue of
the European Union (Withdrawal) Act 2018), the detailed breakdown of
individual trades made by Citigroup Global Markets Limited on behalf of the
Company as part of the share buyback programme is set out below.

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

Schedule of Purchases – Individual Transactions

 Issuer Name        OSB GROUP PLC                     
 LEI                213800ZBKL9BHSL2K459              
 ISIN               GB00BLDRH360                      
 Intermediary Name  Citigroup Global Markets Limited  
 Intermediary Code  SBILGB2L                          
 Timezone           GMT+1                             
 Currency           GBP                               



 Transaction Date  Trade Time  Currency  Volume  Price   Trading Venue  Transaction ID  
 25-11-2025        10:17:00    GBp       58      544.50  XLON           xHaNbIF7Ope     
 25-11-2025        10:17:00    GBp       261     544.50  XLON           xHaNbIF7Opg     
 25-11-2025        10:16:06    GBp       277     544.50  XLON           xHaNbIF7OuE     
 25-11-2025        10:16:00    GBp       202     545.00  XLON           xHaNbIF7OuJ     
 25-11-2025        10:15:48    GBp       54      545.00  XLON           xHaNbIF7Ox8     
 25-11-2025        10:15:35    GBp       707     545.00  XLON           xHaNbIF7OwI     
 25-11-2025        10:07:41    GBp       14      544.50  XLON           xHaNbIF7OUf     
 25-11-2025        10:07:41    GBp       75      544.50  XLON           xHaNbIF7OUh     
 25-11-2025        09:46:38    GBp       376     545.00  XLON           xHaNbIF76Wy     
 25-11-2025        09:32:52    GBp       144     544.00  XLON           xHaNbIF77hM     
 25-11-2025        09:32:52    GBp       104     544.00  XLON           xHaNbIF77hO     
 25-11-2025        09:32:52    GBp       195     544.00  XLON           xHaNbIF77hQ     
 25-11-2025        09:32:19    GBp       661     544.50  XLON           xHaNbIF77ta     
 25-11-2025        09:26:34    GBp       511     545.00  XLON           xHaNbIF779b     
 25-11-2025        08:53:09    GBp       72      544.50  XLON           xHaNbIF75o0     
 25-11-2025        08:53:00    GBp       336     545.00  XLON           xHaNbIF75zv     
 25-11-2025        08:53:00    GBp       685     545.00  XLON           xHaNbIF75zy     
 25-11-2025        08:44:34    GBp       516     545.00  XLON           xHaNbIF75KK     
 25-11-2025        08:44:34    GBp       121     545.00  XLON           xHaNbIF75KM     
 25-11-2025        08:21:03    GBp       146     544.00  XLON           xHaNbIF732E     
 25-11-2025        08:21:03    GBp       359     544.00  XLON           xHaNbIF732G     
 25-11-2025        08:06:57    GBp       301     543.50  XLON           xHaNbIF71kW     
 25-11-2025        08:06:57    GBp       434     544.00  XLON           xHaNbIF71kY     
 25-11-2025        08:02:53    GBp       451     543.00  XLON           xHaNbIF710f     
 25-11-2025        08:02:53    GBp       338     543.50  XLON           xHaNbIF710h