REG-Transaction in own shares

OsbAnnouncement

25/06/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
25 June 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 24 June 2025 it had purchased a total of 3,026
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                      3,026                  -         -         
 Highest price paid (per ordinary share)                  509.00p                -         -         
 Lowest price paid (per ordinary share)                   504.50p                -         -         
 Volume weighted average price paid (per ordinary share)  507.26p                -         -         

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 364,980,165 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 364,980,165.

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  
 24-06-2025        12:20:16    GBp       144     507.50  XLON           xHaNzDAvJ3H     
 24-06-2025        12:08:09    GBp       196     508.50  XLON           xHaNzDAvU5g     
 24-06-2025        11:59:16    GBp       203     508.50  XLON           xHaNzDAvRYX     
 24-06-2025        11:19:46    GBp       177     508.00  XLON           xHaNzDAwqKW     
 24-06-2025        10:57:42    GBp       48      507.00  XLON           xHaNzDAw$aX     
 24-06-2025        10:57:42    GBp       93      507.00  XLON           xHaNzDAw$bV     
 24-06-2025        10:43:04    GBp       141     507.00  XLON           xHaNzDAwxR5     
 24-06-2025        10:26:26    GBp       215     509.00  XLON           xHaNzDAwaMz     
 24-06-2025        10:00:55    GBp       189     504.50  XLON           xHaNzDAwiyF     
 24-06-2025        09:40:34    GBp       180     504.50  XLON           xHaNzDAwfLU     
 24-06-2025        09:20:58    GBp       148     506.00  XLON           xHaNzDAwIj0     
 24-06-2025        09:06:50    GBp       168     506.50  XLON           xHaNzDAwHCz     
 24-06-2025        08:50:59    GBp       212     507.00  XLON           xHaNzDAwTHq     
 24-06-2025        08:30:28    GBp       266     507.00  XLON           xHaNzDAw7KZ     
 24-06-2025        08:09:15    GBp       176     507.50  XLON           xHaNzDAw1v9     
 24-06-2025        08:04:03    GBp       238     508.00  XLON           xHaNzDAwFBi     
 24-06-2025        08:04:03    GBp       232     508.50  XLON           xHaNzDAwFBn