REG-Transaction in own shares

OsbAnnouncement

28/05/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
28 May 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 27 May 2025 it had purchased a total of 9,547 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                      9,547                  -         -         
 Highest price paid (per ordinary share)                  486.00p                -         -         
 Lowest price paid (per ordinary share)                   484.00p                -         -         
 Volume weighted average price paid (per ordinary share)  485.40p                -         -         

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 366,207,811 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 366,207,811.

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  
 27-05-2025        16:28:12    GBp       194     486.00  XLON           xHaNvU8yrru     
 27-05-2025        16:27:51    GBp       48      486.00  XLON           xHaNvU8yrLt     
 27-05-2025        16:27:46    GBp       588     486.00  XLON           xHaNvU8yrGW     
 27-05-2025        16:24:00    GBp       211     485.60  XLON           xHaNvU8y@et     
 27-05-2025        16:23:49    GBp       231     485.80  XLON           xHaNvU8y@ur     
 27-05-2025        16:23:48    GBp       495     485.80  XLON           xHaNvU8y@uC     
 27-05-2025        16:23:48    GBp       1,166   486.00  XLON           xHaNvU8y@uG     
 27-05-2025        16:10:22    GBp       47      485.80  XLON           xHaNvU8ykuh     
 27-05-2025        16:10:22    GBp       102     485.80  XLON           xHaNvU8ykuj     
 27-05-2025        16:10:22    GBp       105     485.80  XLON           xHaNvU8ykuo     
 27-05-2025        16:10:22    GBp       197     485.80  XLON           xHaNvU8ykuq     
 27-05-2025        16:10:22    GBp       257     485.80  XLON           xHaNvU8yku3     
 27-05-2025        16:10:22    GBp       177     485.80  XLON           xHaNvU8yku5     
 27-05-2025        16:10:22    GBp       107     485.80  XLON           xHaNvU8yku7     
 27-05-2025        16:10:22    GBp       786     485.80  XLON           xHaNvU8ykuK     
 27-05-2025        16:10:22    GBp       660     485.60  XLON           xHaNvU8ykx4     
 27-05-2025        16:10:22    GBp       2       485.60  XLON           xHaNvU8ykx6     
 27-05-2025        16:05:32    GBp       15      485.60  XLON           xHaNvU8yhNY     
 27-05-2025        16:04:33    GBp       32      485.60  XLON           xHaNvU8yfkd     
 27-05-2025        16:04:25    GBp       133     485.60  XLON           xHaNvU8yfoG     
 27-05-2025        16:01:05    GBp       706     485.20  XLON           xHaNvU8yLZO     
 27-05-2025        15:59:50    GBp       203     485.00  XLON           xHaNvU8yIJs     
 27-05-2025        15:58:58    GBp       225     485.00  XLON           xHaNvU8yJVk     
 27-05-2025        15:57:41    GBp       748     485.00  XLON           xHaNvU8yHt6     
 27-05-2025        15:57:41    GBp       167     485.00  XLON           xHaNvU8yHsZ     
 27-05-2025        15:56:53    GBp       130     485.00  XLON           xHaNvU8yUea     
 27-05-2025        15:56:53    GBp       36      485.00  XLON           xHaNvU8yUeY     
 27-05-2025        15:56:53    GBp       161     485.00  XLON           xHaNvU8yUht     
 27-05-2025        15:56:53    GBp       101     485.00  XLON           xHaNvU8yUhV     
 27-05-2025        15:56:53    GBp       50      485.00  XLON           xHaNvU8yUgX     
 27-05-2025        15:56:31    GBp       191     485.00  XLON           xHaNvU8yU8W     
 27-05-2025        15:56:31    GBp       4       485.00  XLON           xHaNvU8yU8Y     
 27-05-2025        15:54:26    GBp       355     484.80  XLON           xHaNvU8yThL     
 27-05-2025        15:51:43    GBp       120     484.00  XLON           xHaNvU8yOt@     
 27-05-2025        15:51:31    GBp       607     484.00  XLON           xHaNvU8yOCX     
 27-05-2025        15:51:31    GBp       190     484.00  XLON           xHaNvU8yOCg