REG-Transaction in own shares

OsbAnnouncement

06/08/2025 07:00

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OSB GROUP
PLC                                        
ISIN: GB00BLDRH360
06 August 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 05 August 2025 it had purchased a total of
43,440 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                      43,440                 -         -         
 Highest price paid (per ordinary share)                  561.00p                -         -         
 Lowest price paid (per ordinary share)                   556.50p                -         -         
 Volume weighted average price paid (per ordinary share)  558.21p                -         -         

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 363,593,263 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting
rights in the Company is 363,593,263.

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  
 05-08-2025        16:25:15    GBp       34      557.00  XLON           xeaNqXj3NYg     
 05-08-2025        16:25:04    GBp       102     556.50  XLON           xeaNqXj3NoS     
 05-08-2025        16:25:00    GBp       81      556.50  XLON           xeaNqXj3N7k     
 05-08-2025        16:24:59    GBp       160     556.50  XLON           xeaNqXj3N0J     
 05-08-2025        16:23:53    GBp       571     557.00  XLON           xeaNqXj3KTL     
 05-08-2025        16:23:52    GBp       517     557.00  XLON           xeaNqXj3KSr     
 05-08-2025        16:23:21    GBp       1,057   557.00  XLON           xeaNqXj3Lxj     
 05-08-2025        16:20:05    GBp       256     557.50  XLON           xeaNqXj3Hj@     
 05-08-2025        16:20:05    GBp       191     558.00  XLON           xeaNqXj3HjG     
 05-08-2025        16:20:05    GBp       269     558.00  XLON           xeaNqXj3HjI     
 05-08-2025        16:20:05    GBp       1,107   557.50  XLON           xeaNqXj3HjV     
 05-08-2025        16:08:11    GBp       650     558.00  XLON           xeaNqXj322M     
 05-08-2025        16:07:50    GBp       41      558.50  XLON           xeaNqXj33cb     
 05-08-2025        16:07:50    GBp       127     558.50  XLON           xeaNqXj33cX     
 05-08-2025        16:07:50    GBp       21      558.50  XLON           xeaNqXj33cZ     
 05-08-2025        16:07:50    GBp       1,237   558.50  XLON           xeaNqXj33ch     
 05-08-2025        16:07:50    GBp       156     558.50  XLON           xeaNqXj33cj     
 05-08-2025        16:07:50    GBp       169     558.50  XLON           xeaNqXj33cl     
 05-08-2025        16:07:50    GBp       83      558.50  XLON           xeaNqXj33cn     
 05-08-2025        16:07:50    GBp       184     558.50  XLON           xeaNqXj33cp     
 05-08-2025        16:07:50    GBp       165     558.50  XLON           xeaNqXj33cr     
 05-08-2025        16:07:32    GBp       2       557.50  XLON           xeaNqXj33oP     
 05-08-2025        16:07:32    GBp       234     557.50  XLON           xeaNqXj33oR     
 05-08-2025        16:06:54    GBp       7       557.00  XLON           xeaNqXj30dT     
 05-08-2025        16:01:04    GBp       13      557.00  XLON           xeaNqXj3AdT     
 05-08-2025        15:48:02    GBp       343     557.00  XLON           xeaNqXjyy3T     
 05-08-2025        15:48:02    GBp       50      556.50  XLON           xeaNqXjyy2W     
 05-08-2025        15:48:02    GBp       135     556.50  XLON           xeaNqXjyy2Y     
 05-08-2025        15:48:02    GBp       712     556.50  XLON           xeaNqXjyy2a     
 05-08-2025        15:45:36    GBp       456     557.50  XLON           xeaNqXjyxL7     
 05-08-2025        15:45:36    GBp       585     557.00  XLON           xeaNqXjyxLD     
 05-08-2025        15:43:04    GBp       1,058   557.50  XLON           xeaNqXjydwn     
 05-08-2025        15:43:04    GBp       269     557.50  XLON           xeaNqXjydwp     
 05-08-2025        15:43:04    GBp       207     557.50  XLON           xeaNqXjydwr     
 05-08-2025        15:43:04    GBp       24      557.50  XLON           xeaNqXjydwt     
 05-08-2025        15:42:04    GBp       376     557.50  XLON           xeaNqXjyaM7     
 05-08-2025        15:42:04    GBp       316     557.50  XLON           xeaNqXjyaM9     
 05-08-2025        15:26:45    GBp       474     557.50  XLON           xeaNqXjyUZ6     
 05-08-2025        15:16:50    GBp       106     557.50  XLON           xeaNqXjy34r     
 05-08-2025        15:16:41    GBp       2       557.50  XLON           xeaNqXjy3FY     
 05-08-2025        15:14:57    GBp       404     558.00  XLON           xeaNqXjyE04     
 05-08-2025        15:14:57    GBp       189     558.00  XLON           xeaNqXjyE0J     
 05-08-2025        15:14:57    GBp       454     557.50  XLON           xeaNqXjyE0T     
 05-08-2025        15:00:00    GBp       278     558.00  XLON           xeaNqXjzxUf     
 05-08-2025        15:00:00    GBp       650     558.00  XLON           xeaNqXjzudW     
 05-08-2025        14:56:47    GBp       480     558.50  XLON           xeaNqXjza2P     
 05-08-2025        14:56:08    GBp       264     559.50  XLON           xeaNqXjzbC0     
 05-08-2025        14:56:08    GBp       135     559.50  XLON           xeaNqXjzbC2     
 05-08-2025        14:56:08    GBp       342     559.50  XLON           xeaNqXjzbCC     
 05-08-2025        14:56:08    GBp       672     559.00  XLON           xeaNqXjzbCE     
 05-08-2025        14:56:08    GBp       445     559.00  XLON           xeaNqXjzbCK     
 05-08-2025        14:42:12    GBp       52      559.50  XLON           xeaNqXjzGN0     
 05-08-2025        14:42:12    GBp       503     559.50  XLON           xeaNqXjzGN2     
 05-08-2025        14:36:41    GBp       1,040   559.50  XLON           xeaNqXjzRBx     
 05-08-2025        14:36:41    GBp       508     559.50  XLON           xeaNqXjzRBz     
 05-08-2025        14:36:41    GBp       1,174   559.50  XLON           xeaNqXjzRB7     
 05-08-2025        14:36:41    GBp       23      559.50  XLON           xeaNqXjzRB9     
 05-08-2025        14:36:41    GBp       557     559.50  XLON           xeaNqXjzRBB     
 05-08-2025        14:36:41    GBp       278     559.50  XLON           xeaNqXjzRBT     
 05-08-2025        14:36:41    GBp       10      559.50  XLON           xeaNqXjzRBV     
 05-08-2025        14:33:36    GBp       43      559.00  XLON           xeaNqXjz4bi     
 05-08-2025        14:31:25    GBp       15      559.00  XLON           xeaNqXjz3k0     
 05-08-2025        14:31:25    GBp       146     559.00  XLON           xeaNqXjz3k2     
 05-08-2025        14:31:25    GBp       40      559.00  XLON           xeaNqXjz3k4     
 05-08-2025        14:01:03    GBp       311     558.50  XLON           xeaNqXj@Zio     
 05-08-2025        14:00:34    GBp       243     559.50  XLON           xeaNqXj@Z9W     
 05-08-2025        14:00:34    GBp       317     559.50  XLON           xeaNqXj@Z9p     
 05-08-2025        14:00:21    GBp       445     559.00  XLON           xeaNqXj@ZVi     
 05-08-2025        14:00:21    GBp       419     559.00  XLON           xeaNqXj@ZV4     
 05-08-2025        14:00:21    GBp       13      559.00  XLON           xeaNqXj@ZV6     
 05-08-2025        14:00:21    GBp       13      559.00  XLON           xeaNqXj@ZV8     
 05-08-2025        13:41:14    GBp       164     559.50  XLON           xeaNqXj@V2D     
 05-08-2025        13:41:14    GBp       21      559.50  XLON           xeaNqXj@V2E     
 05-08-2025        13:19:43    GBp       274     559.00  XLON           xeaNqXj@8I8     
 05-08-2025        13:19:43    GBp       383     559.00  XLON           xeaNqXj@8IJ     
 05-08-2025        13:17:11    GBp       9       559.50  XLON           xeaNqXj$qfs     
 05-08-2025        13:17:11    GBp       551     559.50  XLON           xeaNqXj$qfu     
 05-08-2025        13:12:42    GBp       683     559.50  XLON           xeaNqXj$pI$     
 05-08-2025        13:03:12    GBp       325     558.00  XLON           xeaNqXj$upl     
 05-08-2025        12:47:29    GBp       331     557.50  XLON           xeaNqXj$jBG     
 05-08-2025        12:37:16    GBp       210     557.50  XLON           xeaNqXj$L8Q     
 05-08-2025        12:33:13    GBp       207     558.50  XLON           xeaNqXj$Hb3     
 05-08-2025        12:30:45    GBp       291     558.50  XLON           xeaNqXj$VlU     
 05-08-2025        12:30:45    GBp       430     558.50  XLON           xeaNqXj$Vku     
 05-08-2025        12:30:44    GBp       615     559.00  XLON           xeaNqXj$Vk@     
 05-08-2025        12:30:44    GBp       445     559.00  XLON           xeaNqXj$Vk7     
 05-08-2025        12:19:17    GBp       209     560.00  XLON           xeaNqXj$5hw     
 05-08-2025        12:19:17    GBp       114     560.00  XLON           xeaNqXj$5h0     
 05-08-2025        12:19:17    GBp       75      560.00  XLON           xeaNqXj$5h2     
 05-08-2025        12:19:17    GBp       283     560.00  XLON           xeaNqXj$5hK     
 05-08-2025        12:19:17    GBp       226     560.00  XLON           xeaNqXj$5hQ     
 05-08-2025        12:13:16    GBp       445     559.00  XLON           xeaNqXj$EKE     
 05-08-2025        12:07:46    GBp       445     558.50  XLON           xeaNqXj$Bvr     
 05-08-2025        12:02:15    GBp       558     558.50  XLON           xeaNqXjuqvo     
 05-08-2025        11:58:05    GBp       1       558.00  XLON           xeaNqXjumyn     
 05-08-2025        11:58:05    GBp       12      558.00  XLON           xeaNqXjumyp     
 05-08-2025        11:58:05    GBp       1       558.00  XLON           xeaNqXjumyr     
 05-08-2025        11:58:05    GBp       14      558.00  XLON           xeaNqXjumyt     
 05-08-2025        11:54:54    GBp       613     558.00  XLON           xeaNqXju$Wh     
 05-08-2025        11:45:15    GBp       19      557.00  XLON           xeaNqXjud0n     
 05-08-2025        11:45:15    GBp       132     557.00  XLON           xeaNqXjud0p     
 05-08-2025        11:13:15    GBp       660     557.00  XLON           xeaNqXjuTD$     
 05-08-2025        10:51:44    GBp       455     557.00  XLON           xeaNqXju8BP     
 05-08-2025        10:47:51    GBp       371     557.00  XLON           xeaNqXjvtOP     
 05-08-2025        10:47:48    GBp       711     557.50  XLON           xeaNqXjvtQE     
 05-08-2025        10:31:38    GBp       500     557.50  XLON           xeaNqXjvv6W     
 05-08-2025        10:20:00    GBp       452     557.00  XLON           xeaNqXjvlq9     
 05-08-2025        10:12:02    GBp       477     556.50  XLON           xeaNqXjvfSC     
 05-08-2025        10:00:52    GBp       300     556.50  XLON           xeaNqXjvVCJ     
 05-08-2025        10:00:52    GBp       485     556.50  XLON           xeaNqXjvVFm     
 05-08-2025        09:56:58    GBp       379     557.00  XLON           xeaNqXjvRiS     
 05-08-2025        09:56:58    GBp       114     558.00  XLON           xeaNqXjvRl1     
 05-08-2025        09:56:58    GBp       199     558.00  XLON           xeaNqXjvRl3     
 05-08-2025        09:56:58    GBp       445     557.50  XLON           xeaNqXjvRlB     
 05-08-2025        09:45:14    GBp       211     557.00  XLON           xeaNqXjv0M7     
 05-08-2025        09:35:27    GBp       642     556.50  XLON           xeaNqXjv8Fj     
 05-08-2025        09:29:27    GBp       483     557.00  XLON           xeaNqXjwrUH     
 05-08-2025        09:04:30    GBp       383     556.50  XLON           xeaNqXjwlAg     
 05-08-2025        09:02:10    GBp       380     556.50  XLON           xeaNqXjwjGI     
 05-08-2025        08:52:31    GBp       355     558.00  XLON           xeaNqXjwL0F     
 05-08-2025        08:46:30    GBp       317     558.50  XLON           xeaNqXjwHIs     
 05-08-2025        08:46:28    GBp       700     559.00  XLON           xeaNqXjwHS$     
 05-08-2025        08:46:28    GBp       65      559.00  XLON           xeaNqXjwHSx     
 05-08-2025        08:46:28    GBp       182     559.00  XLON           xeaNqXjwHSz     
 05-08-2025        08:46:28    GBp       472     558.50  XLON           xeaNqXjwHS2     
 05-08-2025        08:44:31    GBp       32      559.00  XLON           xeaNqXjwV17     
 05-08-2025        08:35:37    GBp       379     558.50  XLON           xeaNqXjw65A     
 05-08-2025        08:14:44    GBp       325     559.00  XLON           xeaNqXjxr5f     
 05-08-2025        08:10:28    GBp       203     559.50  XLON           xeaNqXjxn9S     
 05-08-2025        08:10:27    GBp       292     560.00  XLON           xeaNqXjxn8y     
 05-08-2025        08:05:43    GBp       245     560.50  XLON           xeaNqXjxwxa     
 05-08-2025        08:05:42    GBp       351     561.00  XLON           xeaNqXjxwwi     
 05-08-2025        08:02:13    GBp       437     560.00  XLON           xeaNqXjxciD     
 05-08-2025        08:02:07    GBp       342     560.50  XLON           xeaNqXjxctl