REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

15/01/2026 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
15 January 2026

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 14 January 2026 it had purchased a total of
3,933 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                      3,933                  -         -         
 Highest price paid (per ordinary share)                  618.50p                -         -         
 Lowest price paid (per ordinary share)                   616.00p                -         -         
 Volume weighted average price paid (per ordinary share)  617.72p                -         -         

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 355,501,015 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 355,501,015.

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  
 14-01-2026        13:51:39    GBp       167     617.00  XLON           xeaMTvtIM6V     
 14-01-2026        13:36:16    GBp       156     617.50  XLON           xeaMTvtI6SB     
 14-01-2026        13:36:11    GBp       226     618.00  XLON           xeaMTvtI7aW     
 14-01-2026        12:54:27    GBp       1       617.50  XLON           xeaMTvtJkWl     
 14-01-2026        12:54:26    GBp       266     618.00  XLON           xeaMTvtJkWN     
 14-01-2026        12:23:21    GBp       186     616.00  XLON           xeaMTvtJPC3     
 14-01-2026        12:00:00    GBp       199     616.50  XLON           xeaMTvtCsKu     
 14-01-2026        11:42:25    GBp       284     616.50  XLON           xeaMTvtCxIf     
 14-01-2026        11:04:55    GBp       247     617.00  XLON           xeaMTvtCSd4     
 14-01-2026        10:36:10    GBp       225     617.00  XLON           xeaMTvtDtYJ     
 14-01-2026        09:49:59    GBp       195     617.50  XLON           xeaMTvtDGlF     
 14-01-2026        09:49:59    GBp       195     618.00  XLON           xeaMTvtDGlP     
 14-01-2026        09:26:24    GBp       294     618.50  XLON           xeaMTvtDDax     
 14-01-2026        09:26:24    GBp       9       618.50  XLON           xeaMTvtDDaz     
 14-01-2026        09:26:24    GBp       453     618.50  XLON           xeaMTvtDDa3     
 14-01-2026        09:26:24    GBp       108     618.50  XLON           xeaMTvtDDaN     
 14-01-2026        08:10:25    GBp       222     618.50  XLON           xeaMTvtE33q     
 14-01-2026        08:09:15    GBp       397     618.50  XLON           xeaMTvtE0FK     
 14-01-2026        08:09:15    GBp       103     618.50  XLON           xeaMTvtE0FM