REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

17/11/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
17 November 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 14 November 2025 it had purchased a total of
37,038 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                      37,038                 -         -         
 Highest price paid (per ordinary share)                  553.00p                -         -         
 Lowest price paid (per ordinary share)                   544.50p                -         -         
 Volume weighted average price paid (per ordinary share)  549.83p                -         -         

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 357,382,647 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 357,382,647.

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  
 14-11-2025        14:44:55    GBp       263     553.00  XLON           xHaNZEC5gqr     
 14-11-2025        14:44:55    GBp       372     553.00  XLON           xHaNZEC5gqu     
 14-11-2025        14:44:01    GBp       152     553.00  XLON           xHaNZEC5hME     
 14-11-2025        14:44:01    GBp       396     553.00  XLON           xHaNZEC5hMG     
 14-11-2025        14:25:00    GBp       264     551.50  XLON           xHaNZEC5B7y     
 14-11-2025        14:09:49    GBp       316     552.00  XLON           xHaNZEC6vJj     
 14-11-2025        13:59:56    GBp       102     552.50  XLON           xHaNZEC6g$7     
 14-11-2025        13:59:56    GBp       210     552.50  XLON           xHaNZEC6g$9     
 14-11-2025        13:59:56    GBp       446     553.00  XLON           xHaNZEC6g$C     
 14-11-2025        13:49:27    GBp       489     553.00  XLON           xHaNZEC6UHl     
 14-11-2025        13:49:27    GBp       1       553.00  XLON           xHaNZEC6UHm     
 14-11-2025        13:49:09    GBp       28      553.00  XLON           xHaNZEC6VjL     
 14-11-2025        13:49:09    GBp       14      553.00  XLON           xHaNZEC6VjN     
 14-11-2025        13:49:09    GBp       287     553.00  XLON           xHaNZEC6VjP     
 14-11-2025        13:45:27    GBp       319     552.00  XLON           xHaNZEC6RRD     
 14-11-2025        13:45:05    GBp       1       552.00  XLON           xHaNZEC6O$@     
 14-11-2025        13:45:05    GBp       5       552.00  XLON           xHaNZEC6O$y     
 14-11-2025        13:45:05    GBp       1       552.00  XLON           xHaNZEC6O$3     
 14-11-2025        13:45:05    GBp       14      552.00  XLON           xHaNZEC6O$6     
 14-11-2025        13:45:05    GBp       603     552.00  XLON           xHaNZEC6O$B     
 14-11-2025        13:32:00    GBp       178     551.00  XLON           xHaNZEC6BQg     
 14-11-2025        13:32:00    GBp       422     550.50  XLON           xHaNZEC6BQm     
 14-11-2025        13:31:55    GBp       836     551.00  XLON           xHaNZEC68i0     
 14-11-2025        13:31:55    GBp       100     551.00  XLON           xHaNZEC68i2     
 14-11-2025        13:09:36    GBp       1       549.50  XLON           xHaNZEC7YMe     
 14-11-2025        13:09:27    GBp       706     550.00  XLON           xHaNZEC7Zdn     
 14-11-2025        13:07:35    GBp       46      551.00  XLON           xHaNZEC7WR4     
 14-11-2025        13:07:35    GBp       176     551.00  XLON           xHaNZEC7WR6     
 14-11-2025        13:04:15    GBp       236     551.00  XLON           xHaNZEC7iIh     
 14-11-2025        12:52:14    GBp       463     550.00  XLON           xHaNZEC7HYJ     
 14-11-2025        12:47:33    GBp       514     549.50  XLON           xHaNZEC7QZT     
 14-11-2025        12:44:59    GBp       730     550.00  XLON           xHaNZEC7O46     
 14-11-2025        12:44:59    GBp       447     550.00  XLON           xHaNZEC7O4E     
 14-11-2025        12:44:59    GBp       1       549.50  XLON           xHaNZEC7O4G     
 14-11-2025        12:24:14    GBp       94      548.00  XLON           xHaNZEC0t6L     
 14-11-2025        12:24:14    GBp       99      548.00  XLON           xHaNZEC0t6N     
 14-11-2025        12:24:14    GBp       459     548.00  XLON           xHaNZEC0t6P     
 14-11-2025        12:22:35    GBp       183     548.50  XLON           xHaNZEC0rke     
 14-11-2025        12:22:35    GBp       111     548.50  XLON           xHaNZEC0rkg     
 14-11-2025        12:19:46    GBp       195     548.50  XLON           xHaNZEC0p9N     
 14-11-2025        12:19:46    GBp       4       548.50  XLON           xHaNZEC0p9P     
 14-11-2025        12:18:40    GBp       72      548.50  XLON           xHaNZEC0mAR     
 14-11-2025        12:18:40    GBp       163     548.50  XLON           xHaNZEC0mAT     
 14-11-2025        12:18:40    GBp       17      548.50  XLON           xHaNZEC0mLZ     
 14-11-2025        12:01:22    GBp       262     546.00  XLON           xHaNZEC0Xup     
 14-11-2025        12:01:22    GBp       534     546.00  XLON           xHaNZEC0XuA     
 14-11-2025        12:01:22    GBp       39      546.00  XLON           xHaNZEC0XuC     
 14-11-2025        11:49:25    GBp       232     546.00  XLON           xHaNZEC0KGi     
 14-11-2025        11:46:34    GBp       289     547.50  XLON           xHaNZEC0J6H     
 14-11-2025        11:41:45    GBp       210     547.50  XLON           xHaNZEC0VJv     
 14-11-2025        11:40:28    GBp       317     547.50  XLON           xHaNZEC0TZV     
 14-11-2025        11:40:19    GBp       589     547.50  XLON           xHaNZEC0Tq3     
 14-11-2025        11:31:14    GBp       442     547.50  XLON           xHaNZEC05il     
 14-11-2025        11:20:31    GBp       314     547.00  XLON           xHaNZEC0AIx     
 14-11-2025        11:16:22    GBp       243     547.00  XLON           xHaNZEC1sHv     
 14-11-2025        11:12:46    GBp       210     548.00  XLON           xHaNZEC1oPk     
 14-11-2025        11:12:29    GBp       303     548.50  XLON           xHaNZEC1pnc     
 14-11-2025        11:12:21    GBp       608     549.00  XLON           xHaNZEC1p6q     
 14-11-2025        11:01:29    GBp       283     549.50  XLON           xHaNZEC1cgD     
 14-11-2025        10:52:58    GBp       376     549.50  XLON           xHaNZEC1kMG     
 14-11-2025        10:52:58    GBp       47      549.50  XLON           xHaNZEC1kML     
 14-11-2025        10:52:25    GBp       537     550.00  XLON           xHaNZEC1ltW     
 14-11-2025        10:40:41    GBp       315     550.50  XLON           xHaNZEC1L8P     
 14-11-2025        10:40:41    GBp       98      551.00  XLON           xHaNZEC1LBn     
 14-11-2025        10:40:41    GBp       583     551.00  XLON           xHaNZEC1LBp     
 14-11-2025        10:40:41    GBp       152     551.00  XLON           xHaNZEC1LBr     
 14-11-2025        10:40:41    GBp       74      551.00  XLON           xHaNZEC1LBt     
 14-11-2025        10:40:41    GBp       422     550.50  XLON           xHaNZEC1LBw     
 14-11-2025        10:30:02    GBp       271     550.50  XLON           xHaNZEC1ROX     
 14-11-2025        10:30:02    GBp       30      550.50  XLON           xHaNZEC1ROZ     
 14-11-2025        10:28:00    GBp       439     550.50  XLON           xHaNZEC1PUm     
 14-11-2025        10:25:05    GBp       171     551.00  XLON           xHaNZEC14Di     
 14-11-2025        10:05:08    GBp       326     551.50  XLON           xHaNZEC2mS4     
 14-11-2025        10:04:07    GBp       265     552.00  XLON           xHaNZEC2nPY     
 14-11-2025        10:02:40    GBp       169     552.00  XLON           xHaNZEC2$o@     
 14-11-2025        10:02:40    GBp       418     552.00  XLON           xHaNZEC2$oy     
 14-11-2025        10:01:02    GBp       355     552.00  XLON           xHaNZEC2zlg     
 14-11-2025        09:57:31    GBp       7       552.50  XLON           xHaNZEC2uFa     
 14-11-2025        09:57:31    GBp       441     552.50  XLON           xHaNZEC2uFc     
 14-11-2025        09:55:09    GBp       14      552.00  XLON           xHaNZEC2cL5     
 14-11-2025        09:55:09    GBp       620     552.00  XLON           xHaNZEC2cL7     
 14-11-2025        09:46:03    GBp       354     552.50  XLON           xHaNZEC2l2r     
 14-11-2025        09:40:14    GBp       227     552.50  XLON           xHaNZEC2f6@     
 14-11-2025        09:38:08    GBp       253     553.00  XLON           xHaNZEC2NVn     
 14-11-2025        09:35:04    GBp       328     553.00  XLON           xHaNZEC2GYQ     
 14-11-2025        09:35:04    GBp       552     553.00  XLON           xHaNZEC2GjW     
 14-11-2025        09:35:04    GBp       128     553.00  XLON           xHaNZEC2Gjb     
 14-11-2025        09:35:04    GBp       286     553.00  XLON           xHaNZEC2Gjd     
 14-11-2025        09:09:05    GBp       96      552.00  XLON           xHaNZEC3q3z     
 14-11-2025        09:09:05    GBp       472     552.00  XLON           xHaNZEC3q3$     
 14-11-2025        09:01:30    GBp       305     549.50  XLON           xHaNZEC3yep     
 14-11-2025        09:01:00    GBp       561     550.00  XLON           xHaNZEC3yG1     
 14-11-2025        09:00:18    GBp       150     551.00  XLON           xHaNZEC3z85     
 14-11-2025        09:00:18    GBp       286     551.00  XLON           xHaNZEC3z87     
 14-11-2025        09:00:18    GBp       52      551.00  XLON           xHaNZEC3z89     
 14-11-2025        09:00:18    GBp       280     550.50  XLON           xHaNZEC3z8C     
 14-11-2025        08:50:52    GBp       460     550.00  XLON           xHaNZEC3Yvz     
 14-11-2025        08:48:40    GBp       572     550.00  XLON           xHaNZEC3Wz5     
 14-11-2025        08:41:18    GBp       359     546.50  XLON           xHaNZEC3h3M     
 14-11-2025        08:40:39    GBp       234     546.50  XLON           xHaNZEC3eqT     
 14-11-2025        08:40:10    GBp       581     547.00  XLON           xHaNZEC3eGU     
 14-11-2025        08:37:28    GBp       356     547.50  XLON           xHaNZEC3N7x     
 14-11-2025        08:37:28    GBp       149     547.50  XLON           xHaNZEC3N7z     
 14-11-2025        08:37:28    GBp       36      548.50  XLON           xHaNZEC3N64     
 14-11-2025        08:37:28    GBp       657     548.50  XLON           xHaNZEC3N6C     
 14-11-2025        08:37:28    GBp       11      547.50  XLON           xHaNZEC3N1X     
 14-11-2025        08:37:28    GBp       324     547.50  XLON           xHaNZEC3N1d     
 14-11-2025        08:28:46    GBp       182     544.50  XLON           xHaNZEC3SOW     
 14-11-2025        08:28:46    GBp       222     546.00  XLON           xHaNZEC3SOd     
 14-11-2025        08:25:32    GBp       361     549.00  XLON           xHaNZEC3RHt     
 14-11-2025        08:23:40    GBp       322     549.00  XLON           xHaNZEC3P8o     
 14-11-2025        08:23:18    GBp       448     549.50  XLON           xHaNZEC36Y4     
 14-11-2025        08:23:18    GBp       642     550.00  XLON           xHaNZEC36is     
 14-11-2025        08:22:50    GBp       178     549.50  XLON           xHaNZEC368Z     
 14-11-2025        08:22:50    GBp       178     549.50  XLON           xHaNZEC368p     
 14-11-2025        08:21:24    GBp       178     549.00  XLON           xHaNZEC34kM     
 14-11-2025        08:21:22    GBp       305     548.50  XLON           xHaNZEC34es     
 14-11-2025        08:19:36    GBp       2,080   548.50  XLON           xHaNZEC321O     
 14-11-2025        08:19:36    GBp       52      548.50  XLON           xHaNZEC321Q     
 14-11-2025        08:19:36    GBp       250     548.50  XLON           xHaNZEC321S     
 14-11-2025        08:19:36    GBp       262     548.50  XLON           xHaNZEC321U     
 14-11-2025        08:11:20    GBp       446     546.00  XLON           xHaNZEC3Be1     
 14-11-2025        08:09:54    GBp       422     546.00  XLON           xHaNZEC39fl     
 14-11-2025        08:01:30    GBp       201     546.50  XLON           xHaNZECyyP$     
 14-11-2025        08:01:30    GBp       67      546.50  XLON           xHaNZECyyP1     
 14-11-2025        08:01:17    GBp       273     550.50  XLON           xHaNZECyzp8     
 14-11-2025        08:01:17    GBp       359     550.00  XLON           xHaNZECyzpA