OSB GROUP PLC                                        
ISIN: GB00BLDRH360
15 August 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 14 August 2025 it had purchased a total of 21,224 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 21,224 - -
Highest price paid (per ordinary share) 562.00p - -
Lowest price paid (per ordinary share) 559.00p - -
Volume weighted average price paid (per ordinary share) 561.40p - -

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 363,342,856 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 363,342,856.

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
14-08-2025 16:26:08 GBp 201 561.00 XLON xHaNr67n$hZ
14-08-2025 16:26:08 GBp 332 561.50 XLON xHaNr67n$hl
14-08-2025 16:19:00 GBp 143 561.50 XLON xHaNr67ndUc
14-08-2025 16:18:56 GBp 815 561.50 XLON xHaNr67nadf
14-08-2025 16:12:10 GBp 1,404 562.00 XLON xHaNr67nlFe
14-08-2025 16:12:02 GBp 1,176 562.00 XLON xHaNr67nlJO
14-08-2025 15:59:55 GBp 1,552 562.00 XLON xHaNr67nSxg
14-08-2025 15:59:55 GBp 1,176 562.00 XLON xHaNr67nSxt
14-08-2025 15:52:06 GBp 326 561.50 XLON xHaNr67n2IH
14-08-2025 15:50:10 GBp 321 561.50 XLON xHaNr67n10s
14-08-2025 15:46:55 GBp 355 561.50 XLON xHaNr67nAJV
14-08-2025 15:46:33 GBp 140 561.50 XLON xHaNr67nBv9
14-08-2025 15:46:33 GBp 1,125 561.50 XLON xHaNr67nBvB
14-08-2025 15:46:33 GBp 1,268 561.50 XLON xHaNr67nBvD
14-08-2025 15:46:33 GBp 218 561.50 XLON xHaNr67nBvF
14-08-2025 15:45:14 GBp 1,176 561.00 XLON xHaNr67n9xE
14-08-2025 15:20:09 GBp 207 559.00 XLON xHaNr67oh9$
14-08-2025 15:20:03 GBp 345 559.50 XLON xHaNr67ohTB
14-08-2025 15:20:00 GBp 346 560.00 XLON xHaNr67ohON
14-08-2025 15:20:00 GBp 1,492 560.00 XLON xHaNr67ohRh
14-08-2025 15:19:11 GBp 303 560.50 XLON xHaNr67oeRO
14-08-2025 15:19:11 GBp 1,117 560.50 XLON xHaNr67oeRQ
14-08-2025 15:07:59 GBp 575 561.00 XLON xHaNr67oPyb
14-08-2025 15:07:59 GBp 249 561.00 XLON xHaNr67oPyh
14-08-2025 15:02:51 GBp 262 561.50 XLON xHaNr67o1dO
14-08-2025 15:00:35 GBp 474 562.00 XLON xHaNr67oCAG
14-08-2025 15:00:35 GBp 350 562.00 XLON xHaNr67oCLi
14-08-2025 15:00:35 GBp 440 562.00 XLON xHaNr67oCLm
14-08-2025 14:58:17 GBp 124 562.00 XLON xHaNr67o87A
14-08-2025 14:30:19 GBp 450 561.00 XLON xHaNr67pGJN
14-08-2025 14:19:32 GBp 469 561.50 XLON xHaNr67p5lR
14-08-2025 14:13:12 GBp 670 562.00 XLON xHaNr67pCfj
14-08-2025 14:13:12 GBp 403 562.00 XLON xHaNr67pCfx
14-08-2025 14:13:12 GBp 309 562.00 XLON xHaNr67pCf9
14-08-2025 14:13:12 GBp 911 562.00 XLON xHaNr67pCfB