REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

07/11/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
07 November 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 06 November 2025 it had purchased a total of
11,763 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                      9,847                  1,916     -         
 Highest price paid (per ordinary share)                  538.00p                531.50p   -         
 Lowest price paid (per ordinary share)                   530.50p                530.50p   -         
 Volume weighted average price paid (per ordinary share)  536.08p                531.25p   -         

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 357,520,567 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 357,520,567.

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  
 06-11-2025        10:45:27    GBp       635     536.00  XLON           xHaNYVdwVwz     
 06-11-2025        10:37:32    GBp       345     537.00  XLON           xHaNYVdw666     
 06-11-2025        10:36:45    GBp       497     537.50  XLON           xHaNYVdw7rm     
 06-11-2025        10:35:48    GBp       616     538.00  XLON           xHaNYVdw4eh     
 06-11-2025        10:35:48    GBp       80      538.00  XLON           xHaNYVdw4ef     
 06-11-2025        10:35:48    GBp       416     538.00  XLON           xHaNYVdw4em     
 06-11-2025        10:35:48    GBp       616     538.00  XLON           xHaNYVdw4eH     
 06-11-2025        10:35:48    GBp       107     538.00  XLON           xHaNYVdw4eF     
 06-11-2025        10:35:48    GBp       158     538.00  XLON           xHaNYVdw4hb     
 06-11-2025        10:35:48    GBp       342     538.00  XLON           xHaNYVdw4hZ     
 06-11-2025        10:35:48    GBp       294     537.50  XLON           xHaNYVdw4hl     
 06-11-2025        10:35:46    GBp       424     538.00  XLON           xHaNYVdw4qY     
 06-11-2025        10:21:35    GBp       421     536.00  XLON           xHaNYVdw8vN     
 06-11-2025        10:21:35    GBp       421     536.50  XLON           xHaNYVdw8u$     
 06-11-2025        10:03:57    GBp       260     537.00  XLON           xHaNYVdxu7H     
 06-11-2025        09:18:36    GBp       444     538.00  XLON           xHaNYVdxCEr     
 06-11-2025        08:09:51    GBp       335     536.50  XLON           xHaNYVdrr2V     
 06-11-2025        08:07:49    GBp       402     537.50  XLON           xHaNYVdrpE@     
 06-11-2025        08:07:49    GBp       272     537.00  XLON           xHaNYVdrpEy     
 06-11-2025        08:07:48    GBp       671     538.00  XLON           xHaNYVdrp9d     
 06-11-2025        08:02:36    GBp       324     530.50  XLON           xHaNYVdrzaq     
 06-11-2025        08:02:36    GBp       538     531.00  XLON           xHaNYVdrzas     
 06-11-2025        08:02:36    GBp       228     530.50  BATE           xHaNYVdrzau     
 06-11-2025        08:02:36    GBp       491     531.00  BATE           xHaNYVdrzaw     
 06-11-2025        08:02:36    GBp       1,197   531.50  BATE           xHaNYVdrzaE     
 06-11-2025        08:02:36    GBp       1,229   531.50  XLON           xHaNYVdrzaG