REG-Transaction in own shares

OsbAnnouncement

27/06/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
27 June 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 26 June 2025 it had purchased a total of 7,172
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                      7,172                  -         -         
 Highest price paid (per ordinary share)                  515.00p                -         -         
 Lowest price paid (per ordinary share)                   514.00p                -         -         
 Volume weighted average price paid (per ordinary share)  514.68p                -         -         

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 364,968,040 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 364,968,040.

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  
 26-06-2025        15:32:29    GBp       254     514.50  XLON           xHaN@vJIWb@     
 26-06-2025        15:25:29    GBp       236     515.00  XLON           xHaN@vJIfCR     
 26-06-2025        15:10:21    GBp       206     515.00  XLON           xHaN@vJI370     
 26-06-2025        15:10:21    GBp       227     515.00  XLON           xHaN@vJI37R     
 26-06-2025        15:10:21    GBp       90      515.00  XLON           xHaN@vJI37T     
 26-06-2025        15:01:24    GBp       190     514.50  XLON           xHaN@vJJshB     
 26-06-2025        15:01:24    GBp       274     515.00  XLON           xHaN@vJJshJ     
 26-06-2025        14:47:33    GBp       272     515.00  XLON           xHaN@vJJZEV     
 26-06-2025        14:47:33    GBp       498     515.00  XLON           xHaN@vJJZ9m     
 26-06-2025        14:40:14    GBp       145     515.00  XLON           xHaN@vJJfxK     
 26-06-2025        14:38:56    GBp       139     515.00  XLON           xHaN@vJJNk9     
 26-06-2025        14:38:56    GBp       425     515.00  XLON           xHaN@vJJNkI     
 26-06-2025        14:38:56    GBp       18      515.00  XLON           xHaN@vJJNkK     
 26-06-2025        14:38:56    GBp       306     515.00  XLON           xHaN@vJJNkM     
 26-06-2025        14:38:56    GBp       38      515.00  XLON           xHaN@vJJNkO     
 26-06-2025        14:33:21    GBp       282     514.50  XLON           xHaN@vJJUxm     
 26-06-2025        14:32:08    GBp       328     514.50  XLON           xHaN@vJJSvG     
 26-06-2025        14:32:08    GBp       350     514.50  XLON           xHaN@vJJSua     
 26-06-2025        14:32:08    GBp       160     514.50  XLON           xHaN@vJJSuW     
 26-06-2025        14:32:08    GBp       145     514.50  XLON           xHaN@vJJSuY     
 26-06-2025        14:30:22    GBp       311     514.00  XLON           xHaN@vJJRtK     
 26-06-2025        14:30:22    GBp       251     514.00  XLON           xHaN@vJJRtQ     
 26-06-2025        14:28:26    GBp       145     514.00  XLON           xHaN@vJJPQh     
 26-06-2025        14:22:32    GBp       255     514.00  XLON           xHaN@vJJ0@k     
 26-06-2025        14:22:32    GBp       85      514.00  XLON           xHaN@vJJ0@m     
 26-06-2025        14:12:17    GBp       274     514.50  XLON           xHaN@vJCtVN     
 26-06-2025        14:12:17    GBp       395     515.00  XLON           xHaN@vJCtVT     
 26-06-2025        14:09:04    GBp       495     514.50  XLON           xHaN@vJCpxm     
 26-06-2025        14:07:30    GBp       378     515.00  XLON           xHaN@vJCnl9