REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

Mon 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
19 January 2026

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 16 January 2026 it had purchased a total of
13,431 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                      13,431                 -         -         
 Highest price paid (per ordinary share)                  637.50p                -         -         
 Lowest price paid (per ordinary share)                   633.50p                -         -         
 Volume weighted average price paid (per ordinary share)  635.39p                -         -         

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 355,487,099 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 355,487,099.

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  
 16-01-2026        16:27:21    GBp       926     635.00  XLON           xeaMTL1hq6a     
 16-01-2026        16:20:05    GBp       1,250   634.50  XLON           xeaMTL1hxQA     
 16-01-2026        16:19:33    GBp       136     634.50  XLON           xeaMTL1huLT     
 16-01-2026        16:05:43    GBp       190     634.50  XLON           xeaMTL1hKE@     
 16-01-2026        16:04:49    GBp       207     634.50  XLON           xeaMTL1hLPE     
 16-01-2026        16:02:59    GBp       200     634.50  XLON           xeaMTL1hGN7     
 16-01-2026        16:01:37    GBp       36      634.50  XLON           xeaMTL1hULC     
 16-01-2026        16:01:17    GBp       465     635.00  XLON           xeaMTL1hVgZ     
 16-01-2026        16:01:16    GBp       19      635.00  XLON           xeaMTL1hVg2     
 16-01-2026        16:01:16    GBp       1,185   635.50  XLON           xeaMTL1hVg8     
 16-01-2026        15:59:45    GBp       209     635.00  XLON           xeaMTL1hTE4     
 16-01-2026        15:58:56    GBp       175     635.00  XLON           xeaMTL1hRkt     
 16-01-2026        15:43:01    GBp       225     634.00  XLON           xeaMTL1a@mh     
 16-01-2026        15:42:21    GBp       179     634.00  XLON           xeaMTL1a$yU     
 16-01-2026        15:40:58    GBp       245     634.00  XLON           xeaMTL1azNx     
 16-01-2026        15:40:54    GBp       238     634.00  XLON           xeaMTL1azJ7     
 16-01-2026        15:40:04    GBp       77      634.50  XLON           xeaMTL1axgH     
 16-01-2026        15:40:04    GBp       143     634.50  XLON           xeaMTL1axgJ     
 16-01-2026        15:34:30    GBp       167     634.00  XLON           xeaMTL1aWjj     
 16-01-2026        15:18:55    GBp       155     635.00  XLON           xeaMTL1a63s     
 16-01-2026        15:18:45    GBp       225     635.50  XLON           xeaMTL1a6Gl     
 16-01-2026        14:50:18    GBp       263     633.50  XLON           xeaMTL1bLWB     
 16-01-2026        14:31:02    GBp       195     634.50  XLON           xeaMTL1cnPf     
 16-01-2026        14:10:56    GBp       201     636.00  XLON           xeaMTL1cN8n     
 16-01-2026        13:40:15    GBp       130     637.00  XLON           xeaMTL1doxK     
 16-01-2026        13:19:24    GBp       279     637.50  XLON           xeaMTL1di$Z     
 16-01-2026        13:10:52    GBp       315     637.00  XLON           xeaMTL1dIX7     
 16-01-2026        13:07:45    GBp       268     637.50  XLON           xeaMTL1dHJe     
 16-01-2026        13:05:01    GBp       334     637.50  XLON           xeaMTL1dSUK     
 16-01-2026        12:18:20    GBp       3       635.00  XLON           xeaMTL1WXBN     
 16-01-2026        12:18:04    GBp       295     636.00  XLON           xeaMTL1WkXW     
 16-01-2026        11:50:47    GBp       311     635.50  XLON           xeaMTL1W56I     
 16-01-2026        11:26:49    GBp       225     635.00  XLON           xeaMTL1XzGg     
 16-01-2026        11:07:45    GBp       164     634.00  XLON           xeaMTL1XNiu     
 16-01-2026        10:58:55    GBp       136     634.50  XLON           xeaMTL1XQY6     
 16-01-2026        10:57:55    GBp       198     635.00  XLON           xeaMTL1XRCn     
 16-01-2026        10:48:34    GBp       198     635.50  XLON           xeaMTL1XCM5     
 16-01-2026        10:42:04    GBp       323     636.00  XLON           xeaMTL1YtIV     
 16-01-2026        10:23:37    GBp       350     636.00  XLON           xeaMTL1YWEM     
 16-01-2026        10:14:42    GBp       494     636.00  XLON           xeaMTL1YKfM     
 16-01-2026        09:27:54    GBp       153     636.00  XLON           xeaMTL1ZYEx     
 16-01-2026        09:21:00    GBp       283     637.00  XLON           xeaMTL1Zhca     
 16-01-2026        09:17:11    GBp       345     637.00  XLON           xeaMTL1ZNyj     
 16-01-2026        09:04:22    GBp       209     636.00  XLON           xeaMTL1Z6v1     
 16-01-2026        08:40:21    GBp       180     635.50  XLON           xeaMTL0S$6N     
 16-01-2026        08:40:21    GBp       262     635.50  XLON           xeaMTL0S$6S     
 16-01-2026        08:08:37    GBp       193     636.00  XLON           xeaMTL0SUjZ     
 16-01-2026        08:07:21    GBp       120     635.50  XLON           xeaMTL0SUSn     
 16-01-2026        08:07:21    GBp       2       635.50  XLON           xeaMTL0SUSp     
 16-01-2026        08:07:21    GBp       147     635.50  XLON           xeaMTL0SUSr     
 16-01-2026        08:07:20    GBp       203     636.00  XLON           xeaMTL0SUVq