REG-Transaction in own shares

OsbAnnouncement

30/05/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
30 May 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 29 May 2025 it had purchased a total of 7,979 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                      7,979                  -         -         
 Highest price paid (per ordinary share)                  486.00p                -         -         
 Lowest price paid (per ordinary share)                   484.00p                -         -         
 Volume weighted average price paid (per ordinary share)  484.96p                -         -         

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 366,176,532 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 366,176,532.

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  
 29-05-2025        15:52:36    GBp       319     484.60  XLON           xHaNvAHI3HP     
 29-05-2025        15:52:36    GBp       457     484.80  XLON           xHaNvAHI3HR     
 29-05-2025        15:51:02    GBp       157     485.00  XLON           xHaNvAHI1hc     
 29-05-2025        15:51:02    GBp       231     485.00  XLON           xHaNvAHI1he     
 29-05-2025        15:50:33    GBp       783     485.00  XLON           xHaNvAHI193     
 29-05-2025        15:50:33    GBp       323     484.60  XLON           xHaNvAHI19D     
 29-05-2025        15:45:27    GBp       487     484.20  XLON           xHaNvAHIAIF     
 29-05-2025        15:42:03    GBp       275     484.60  XLON           xHaNvAHJsgv     
 29-05-2025        15:38:38    GBp       39      484.00  XLON           xHaNvAHJr0e     
 29-05-2025        15:38:38    GBp       139     484.00  XLON           xHaNvAHJr06     
 29-05-2025        15:38:37    GBp       53      484.00  XLON           xHaNvAHJr30     
 29-05-2025        15:38:26    GBp       123     484.00  XLON           xHaNvAHJrJY     
 29-05-2025        15:38:26    GBp       124     484.00  XLON           xHaNvAHJrJp     
 29-05-2025        15:38:25    GBp       167     484.20  XLON           xHaNvAHJrJ4     
 29-05-2025        15:38:25    GBp       300     484.20  XLON           xHaNvAHJrJC     
 29-05-2025        15:38:25    GBp       38      484.20  XLON           xHaNvAHJrJE     
 29-05-2025        15:38:25    GBp       11      484.20  XLON           xHaNvAHJrJG     
 29-05-2025        15:38:25    GBp       126     484.00  XLON           xHaNvAHJrJR     
 29-05-2025        15:38:25    GBp       212     484.20  XLON           xHaNvAHJrIj     
 29-05-2025        15:38:25    GBp       486     484.40  XLON           xHaNvAHJrIA     
 29-05-2025        15:37:15    GBp       170     484.60  XLON           xHaNvAHJpZe     
 29-05-2025        15:33:09    GBp       127     484.00  XLON           xHaNvAHJ$Z0     
 29-05-2025        15:32:33    GBp       122     484.40  XLON           xHaNvAHJ$Oo     
 29-05-2025        15:32:23    GBp       184     484.60  XLON           xHaNvAHJylJ     
 29-05-2025        15:27:44    GBp       125     485.20  XLON           xHaNvAHJuGw     
 29-05-2025        15:20:19    GBp       146     485.80  XLON           xHaNvAHJXsa     
 29-05-2025        15:20:19    GBp       246     486.00  XLON           xHaNvAHJXsq     
 29-05-2025        12:03:45    GBp       15      486.00  XLON           xHaNvAHDFe0     
 29-05-2025        12:03:45    GBp       283     486.00  XLON           xHaNvAHDFe5     
 29-05-2025        11:19:04    GBp       1       485.80  XLON           xHaNvAHEkpe     
 29-05-2025        11:19:04    GBp       28      485.80  XLON           xHaNvAHEkpg     
 29-05-2025        11:19:04    GBp       1       485.80  XLON           xHaNvAHEkpi     
 29-05-2025        11:19:04    GBp       17      485.80  XLON           xHaNvAHEkpk     
 29-05-2025        11:19:04    GBp       401     486.00  XLON           xHaNvAHEkpm     
 29-05-2025        11:19:04    GBp       31      486.00  XLON           xHaNvAHEkpo     
 29-05-2025        11:19:04    GBp       15      486.00  XLON           xHaNvAHEkpq     
 29-05-2025        11:02:37    GBp       15      486.00  XLON           xHaNvAHELLa     
 29-05-2025        09:19:32    GBp       196     485.80  XLON           xHaNvAHFH9m     
 29-05-2025        09:17:28    GBp       226     486.00  XLON           xHaNvAHFUI@     
 29-05-2025        09:12:02    GBp       461     486.00  XLON           xHaNvAHFQo7     
 29-05-2025        08:15:34    GBp       319     486.00  XLON           xHaNvAH8YrC