REG-OSB GROUP PLC - Transaction in Own Shares

OsbAnnouncement

14/11/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
14 November 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 13 November 2025 it had purchased a total of
60,785 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                      60,785                 -         -         
 Highest price paid (per ordinary share)                  554.00p                -         -         
 Lowest price paid (per ordinary share)                   545.00p                -         -         
 Volume weighted average price paid (per ordinary share)  549.57p                -         -         

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 357,419,685 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 357,419,685.

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  
 13-11-2025        15:39:48    GBp       82      553.50  XLON           xHaNZOtSE11     
 13-11-2025        15:39:48    GBp       138     553.50  XLON           xHaNZOtSE13     
 13-11-2025        15:38:56    GBp       110     553.00  XLON           xHaNZOtSCXP     
 13-11-2025        15:38:56    GBp       101     553.00  XLON           xHaNZOtSCXR     
 13-11-2025        15:38:10    GBp       196     553.00  XLON           xHaNZOtSCSm     
 13-11-2025        15:37:36    GBp       186     553.00  XLON           xHaNZOtSDNB     
 13-11-2025        15:34:19    GBp       1,251   553.00  XLON           xHaNZOtTthD     
 13-11-2025        15:34:19    GBp       228     553.00  XLON           xHaNZOtTthF     
 13-11-2025        15:34:19    GBp       275     553.00  XLON           xHaNZOtTthH     
 13-11-2025        15:34:19    GBp       359     553.00  XLON           xHaNZOtTthJ     
 13-11-2025        15:34:19    GBp       229     553.00  XLON           xHaNZOtTthL     
 13-11-2025        15:34:19    GBp       3       553.00  XLON           xHaNZOtTthN     
 13-11-2025        15:29:27    GBp       296     552.50  XLON           xHaNZOtT@Cy     
 13-11-2025        15:28:50    GBp       370     552.50  XLON           xHaNZOtT$6r     
 13-11-2025        15:28:50    GBp       896     552.00  XLON           xHaNZOtT$6x     
 13-11-2025        15:24:57    GBp       997     552.50  XLON           xHaNZOtTvMC     
 13-11-2025        15:12:25    GBp       1,330   552.00  XLON           xHaNZOtTK7p     
 13-11-2025        15:12:25    GBp       1,478   552.50  XLON           xHaNZOtTK7y     
 13-11-2025        15:12:10    GBp       700     553.00  XLON           xHaNZOtTKH@     
 13-11-2025        15:12:10    GBp       61      553.00  XLON           xHaNZOtTKHy     
 13-11-2025        15:12:01    GBp       206     553.00  XLON           xHaNZOtTLh8     
 13-11-2025        15:12:01    GBp       941     553.00  XLON           xHaNZOtTLhF     
 13-11-2025        15:03:29    GBp       300     552.00  XLON           xHaNZOtT6q0     
 13-11-2025        15:03:29    GBp       150     552.00  XLON           xHaNZOtT6q2     
 13-11-2025        15:03:29    GBp       26      552.00  XLON           xHaNZOtT6te     
 13-11-2025        15:03:28    GBp       885     552.00  XLON           xHaNZOtT6t7     
 13-11-2025        14:50:38    GBp       1,227   549.50  XLON           xHaNZOtUoA5     
 13-11-2025        14:50:38    GBp       168     550.00  XLON           xHaNZOtUoA8     
 13-11-2025        14:50:38    GBp       11      550.00  XLON           xHaNZOtUoAA     
 13-11-2025        14:49:53    GBp       161     550.00  XLON           xHaNZOtUmYp     
 13-11-2025        14:49:53    GBp       521     550.00  XLON           xHaNZOtUmYr     
 13-11-2025        14:43:09    GBp       280     550.00  XLON           xHaNZOtUdDt     
 13-11-2025        14:43:09    GBp       1,249   549.50  XLON           xHaNZOtUdDw     
 13-11-2025        14:38:05    GBp       614     549.50  XLON           xHaNZOtUjb7     
 13-11-2025        14:38:05    GBp       569     549.50  XLON           xHaNZOtUjb9     
 13-11-2025        14:34:54    GBp       842     550.00  XLON           xHaNZOtUM7z     
 13-11-2025        14:34:32    GBp       207     550.50  XLON           xHaNZOtUNhi     
 13-11-2025        14:34:22    GBp       247     550.50  XLON           xHaNZOtUN$a     
 13-11-2025        14:34:22    GBp       62      550.50  XLON           xHaNZOtUN$g     
 13-11-2025        14:34:22    GBp       115     550.50  XLON           xHaNZOtUN$i     
 13-11-2025        14:34:22    GBp       329     550.50  XLON           xHaNZOtUN$k     
 13-11-2025        14:34:22    GBp       252     550.50  XLON           xHaNZOtUN$2     
 13-11-2025        14:34:22    GBp       248     550.50  XLON           xHaNZOtUN$I     
 13-11-2025        14:34:22    GBp       254     550.50  XLON           xHaNZOtUN@h     
 13-11-2025        14:34:22    GBp       243     550.50  XLON           xHaNZOtUN@p     
 13-11-2025        14:18:41    GBp       450     548.50  XLON           xHaNZOtUEZM     
 13-11-2025        14:17:02    GBp       575     549.00  XLON           xHaNZOtUCyd     
 13-11-2025        14:17:02    GBp       181     549.00  XLON           xHaNZOtUCyf     
 13-11-2025        14:12:16    GBp       369     548.00  XLON           xHaNZOtU93r     
 13-11-2025        14:09:39    GBp       335     548.00  XLON           xHaNZOtVq1p     
 13-11-2025        14:06:31    GBp       242     547.00  XLON           xHaNZOtVm33     
 13-11-2025        14:06:30    GBp       485     547.00  XLON           xHaNZOtVmDc     
 13-11-2025        14:01:40    GBp       363     547.50  XLON           xHaNZOtVwF2     
 13-11-2025        14:01:40    GBp       405     548.00  XLON           xHaNZOtVwFA     
 13-11-2025        14:01:40    GBp       116     548.00  XLON           xHaNZOtVwFC     
 13-11-2025        14:00:12    GBp       953     548.50  XLON           xHaNZOtVu@y     
 13-11-2025        13:55:59    GBp       970     549.00  XLON           xHaNZOtVbIk     
 13-11-2025        13:50:18    GBp       182     547.50  XLON           xHaNZOtViMY     
 13-11-2025        13:48:46    GBp       271     548.00  XLON           xHaNZOtVgMO     
 13-11-2025        13:48:46    GBp       478     548.00  XLON           xHaNZOtVgMQ     
 13-11-2025        13:40:38    GBp       280     547.50  XLON           xHaNZOtVG27     
 13-11-2025        13:37:22    GBp       822     547.50  XLON           xHaNZOtVTac     
 13-11-2025        13:36:28    GBp       224     548.50  XLON           xHaNZOtVQfL     
 13-11-2025        13:35:00    GBp       540     548.00  XLON           xHaNZOtVOhn     
 13-11-2025        13:22:55    GBp       494     547.00  XLON           xHaNZOtVAML     
 13-11-2025        13:22:55    GBp       820     547.00  XLON           xHaNZOtVAHc     
 13-11-2025        13:10:59    GBp       424     545.50  XLON           xHaNZOtOybW     
 13-11-2025        13:03:09    GBp       428     547.00  XLON           xHaNZOtOaya     
 13-11-2025        13:03:09    GBp       428     547.50  XLON           xHaNZOtOayj     
 13-11-2025        13:03:01    GBp       794     548.00  XLON           xHaNZOtOaCH     
 13-11-2025        12:53:27    GBp       303     548.50  XLON           xHaNZOtOgiu     
 13-11-2025        12:52:29    GBp       473     549.00  XLON           xHaNZOtOhav     
 13-11-2025        12:50:00    GBp       623     549.50  XLON           xHaNZOtOfu4     
 13-11-2025        12:39:52    GBp       259     550.00  XLON           xHaNZOtOU3w     
 13-11-2025        12:39:00    GBp       365     549.00  XLON           xHaNZOtOVoa     
 13-11-2025        12:38:56    GBp       641     549.00  XLON           xHaNZOtOVz4     
 13-11-2025        12:32:47    GBp       113     548.50  XLON           xHaNZOtOOyG     
 13-11-2025        12:32:47    GBp       60      548.50  XLON           xHaNZOtOOyI     
 13-11-2025        12:32:47    GBp       23      548.50  XLON           xHaNZOtOOyK     
 13-11-2025        12:32:47    GBp       523     548.00  XLON           xHaNZOtOOyR     
 13-11-2025        12:20:20    GBp       330     545.00  XLON           xHaNZOtOFC7     
 13-11-2025        12:20:20    GBp       472     545.50  XLON           xHaNZOtOFC9     
 13-11-2025        12:13:12    GBp       386     546.50  XLON           xHaNZOtPsNH     
 13-11-2025        12:12:34    GBp       180     546.50  XLON           xHaNZOtPt5A     
 13-11-2025        12:10:00    GBp       339     547.00  XLON           xHaNZOtPoXW     
 13-11-2025        12:05:00    GBp       266     547.50  XLON           xHaNZOtP$u$     
 13-11-2025        12:05:00    GBp       118     547.50  XLON           xHaNZOtP$uz     
 13-11-2025        11:56:22    GBp       509     548.50  XLON           xHaNZOtPaHH     
 13-11-2025        11:56:22    GBp       847     549.00  XLON           xHaNZOtPaHN     
 13-11-2025        11:56:22    GBp       740     549.50  XLON           xHaNZOtPaGd     
 13-11-2025        11:55:04    GBp       177     550.50  XLON           xHaNZOtPYfd     
 13-11-2025        11:53:56    GBp       177     550.50  XLON           xHaNZOtPZ5o     
 13-11-2025        11:53:56    GBp       1,535   550.50  XLON           xHaNZOtPZ5O     
 13-11-2025        11:35:04    GBp       261     549.50  XLON           xHaNZOtPU9f     
 13-11-2025        11:31:24    GBp       808     549.50  XLON           xHaNZOtPQF1     
 13-11-2025        11:31:24    GBp       334     549.50  XLON           xHaNZOtPQF4     
 13-11-2025        11:17:56    GBp       250     549.50  XLON           xHaNZOtPDL7     
 13-11-2025        11:15:25    GBp       664     549.50  XLON           xHaNZOtP8TR     
 13-11-2025        11:15:12    GBp       214     550.00  XLON           xHaNZOtP9X0     
 13-11-2025        11:12:54    GBp       177     550.00  XLON           xHaNZOtQt56     
 13-11-2025        11:12:07    GBp       132     550.00  XLON           xHaNZOtQqhi     
 13-11-2025        11:12:07    GBp       79      550.00  XLON           xHaNZOtQqhk     
 13-11-2025        11:12:07    GBp       274     550.00  XLON           xHaNZOtQqh9     
 13-11-2025        11:12:07    GBp       3       549.50  XLON           xHaNZOtQqgg     
 13-11-2025        11:03:05    GBp       623     549.00  XLON           xHaNZOtQzsb     
 13-11-2025        10:59:53    GBp       428     548.00  XLON           xHaNZOtQu4B     
 13-11-2025        10:53:12    GBp       718     548.50  XLON           xHaNZOtQZ3R     
 13-11-2025        10:42:59    GBp       87      548.00  XLON           xHaNZOtQM6C     
 13-11-2025        10:42:59    GBp       192     548.00  XLON           xHaNZOtQM6E     
 13-11-2025        10:40:02    GBp       360     548.00  XLON           xHaNZOtQLFA     
 13-11-2025        10:40:02    GBp       177     549.50  XLON           xHaNZOtQLFO     
 13-11-2025        10:40:02    GBp       291     548.50  XLON           xHaNZOtQLEW     
 13-11-2025        10:40:02    GBp       417     549.00  XLON           xHaNZOtQLEY     
 13-11-2025        10:30:15    GBp       527     548.50  XLON           xHaNZOtQR7S     
 13-11-2025        10:30:15    GBp       460     548.50  XLON           xHaNZOtQR7U     
 13-11-2025        10:30:15    GBp       291     548.00  XLON           xHaNZOtQR6b     
 13-11-2025        10:30:15    GBp       87      548.50  XLON           xHaNZOtQR6m     
 13-11-2025        10:30:15    GBp       330     548.50  XLON           xHaNZOtQR6o     
 13-11-2025        10:21:11    GBp       417     548.00  XLON           xHaNZOtQ0UB     
 13-11-2025        10:08:02    GBp       242     547.00  XLON           xHaNZOtRpZf     
 13-11-2025        10:08:02    GBp       189     547.00  XLON           xHaNZOtRpZh     
 13-11-2025        10:05:54    GBp       278     547.50  XLON           xHaNZOtRnfy     
 13-11-2025        10:01:18    GBp       193     547.50  XLON           xHaNZOtRzKo     
 13-11-2025        10:01:18    GBp       277     548.00  XLON           xHaNZOtRzKx     
 13-11-2025        10:01:18    GBp       683     548.50  XLON           xHaNZOtRzKJ     
 13-11-2025        09:55:10    GBp       670     546.50  XLON           xHaNZOtRafl     
 13-11-2025        09:45:15    GBp       344     546.00  XLON           xHaNZOtRgqn     
 13-11-2025        09:45:15    GBp       466     546.00  XLON           xHaNZOtRgqs     
 13-11-2025        09:38:21    GBp       333     546.00  XLON           xHaNZOtRLu7     
 13-11-2025        09:36:08    GBp       425     546.50  XLON           xHaNZOtRJ4F     
 13-11-2025        09:30:59    GBp       458     547.00  XLON           xHaNZOtRS4k     
 13-11-2025        09:30:37    GBp       77      547.00  XLON           xHaNZOtRSAu     
 13-11-2025        09:22:35    GBp       379     547.00  XLON           xHaNZOtR2Xe     
 13-11-2025        09:19:10    GBp       291     547.50  XLON           xHaNZOtREW7     
 13-11-2025        09:19:05    GBp       417     548.00  XLON           xHaNZOtREeE     
 13-11-2025        09:19:05    GBp       417     548.50  XLON           xHaNZOtREhN     
 13-11-2025        09:02:53    GBp       373     549.00  XLON           xHaNZOtKzEp     
 13-11-2025        09:02:53    GBp       534     549.50  XLON           xHaNZOtKzEI     
 13-11-2025        09:02:53    GBp       472     550.50  XLON           xHaNZOtKzES     
 13-11-2025        08:57:51    GBp       208     550.50  XLON           xHaNZOtKdzA     
 13-11-2025        08:56:37    GBp       301     551.00  XLON           xHaNZOtKaCG     
 13-11-2025        08:55:59    GBp       303     551.50  XLON           xHaNZOtKbyQ     
 13-11-2025        08:47:57    GBp       504     551.00  XLON           xHaNZOtKggO     
 13-11-2025        08:44:57    GBp       394     549.50  XLON           xHaNZOtKfZc     
 13-11-2025        08:44:56    GBp       373     550.00  XLON           xHaNZOtKfZG     
 13-11-2025        08:39:45    GBp       228     553.00  XLON           xHaNZOtKIZ7     
 13-11-2025        08:39:10    GBp       330     553.50  XLON           xHaNZOtKIE1     
 13-11-2025        08:39:09    GBp       701     554.00  XLON           xHaNZOtKI9b     
 13-11-2025        08:08:30    GBp       843     554.00  XLON           xHaNZOtLsyf