Transaction in own shares

OSB GROUP PLC                                        
ISIN: GB00BLDRH360
23 May 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 22 May 2025 it had purchased a total of 30,000 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	30,000	-	-
Highest price paid (per ordinary share)	481.20p	-	-
Lowest price paid (per ordinary share)	474.40p	-	-
Volume weighted average price paid (per ordinary share)	477.58p	-	-

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 366,294,715 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 366,294,715.

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
22-05-2025	16:28:04	GBp	212	480.60	XLON	xHaNu19J07U
22-05-2025	16:20:14	GBp	131	480.40	XLON	xHaNu19CtKg
22-05-2025	16:20:14	GBp	166	480.40	XLON	xHaNu19CtKi
22-05-2025	16:16:37	GBp	149	479.80	XLON	xHaNu19CnOA
22-05-2025	16:16:37	GBp	110	479.80	XLON	xHaNu19CnOC
22-05-2025	16:13:05	GBp	300	480.40	XLON	xHaNu19CxuK
22-05-2025	16:13:05	GBp	431	480.60	XLON	xHaNu19CxxR
22-05-2025	16:13:03	GBp	36	480.60	XLON	xHaNu19CxCS
22-05-2025	16:13:03	GBp	167	480.60	XLON	xHaNu19CxCU
22-05-2025	16:06:28	GBp	445	480.20	XLON	xHaNu19CWIo
22-05-2025	15:59:36	GBp	471	480.20	XLON	xHaNu19CMxN
22-05-2025	15:49:14	GBp	393	479.20	XLON	xHaNu19CPk@
22-05-2025	15:41:46	GBp	280	478.60	XLON	xHaNu19CCtx
22-05-2025	15:41:46	GBp	400	478.80	XLON	xHaNu19CCsZ
22-05-2025	15:22:45	GBp	144	477.80	XLON	xHaNu19Di0D
22-05-2025	15:22:39	GBp	9	477.80	XLON	xHaNu19DiEW
22-05-2025	15:22:39	GBp	18	477.80	XLON	xHaNu19DiEY
22-05-2025	15:22:39	GBp	191	478.00	XLON	xHaNu19DiEu
22-05-2025	15:20:03	GBp	79	477.40	XLON	xHaNu19DeQm
22-05-2025	15:20:03	GBp	131	477.40	XLON	xHaNu19DeQo
22-05-2025	15:11:09	GBp	126	476.80	XLON	xHaNu19DRPa
22-05-2025	15:11:09	GBp	75	477.00	XLON	xHaNu19DRPc
22-05-2025	15:11:09	GBp	109	477.00	XLON	xHaNu19DRPe
22-05-2025	15:10:01	GBp	178	477.20	XLON	xHaNu19DP8f
22-05-2025	15:10:01	GBp	97	477.20	XLON	xHaNu19DP8h
22-05-2025	14:56:07	GBp	207	477.40	XLON	xHaNu19E@yP
22-05-2025	14:56:07	GBp	201	477.60	XLON	xHaNu19E@$c
22-05-2025	14:56:02	GBp	323	477.80	XLON	xHaNu19E@A@
22-05-2025	14:49:17	GBp	302	477.00	XLON	xHaNu19EZWf
22-05-2025	14:49:17	GBp	458	477.20	XLON	xHaNu19EZWh
22-05-2025	14:33:46	GBp	143	477.60	XLON	xHaNu19EPhE
22-05-2025	14:31:45	GBp	169	477.80	XLON	xHaNu19E5kw
22-05-2025	14:31:45	GBp	274	478.00	XLON	xHaNu19E5ky
22-05-2025	14:26:23	GBp	34	477.20	XLON	xHaNu19EDrd
22-05-2025	14:19:25	GBp	183	477.60	XLON	xHaNu19FrYV
22-05-2025	14:19:25	GBp	213	477.60	XLON	xHaNu19FrjY
22-05-2025	14:06:05	GBp	244	478.80	XLON	xHaNu19FdVc
22-05-2025	14:03:16	GBp	22	478.60	XLON	xHaNu19FZbh
22-05-2025	14:03:16	GBp	5	478.60	XLON	xHaNu19FZbj
22-05-2025	14:03:16	GBp	85	478.60	XLON	xHaNu19FZbl
22-05-2025	13:58:11	GBp	193	478.60	XLON	xHaNu19Fjzs
22-05-2025	13:58:11	GBp	367	478.80	XLON	xHaNu19Fjz0
22-05-2025	13:45:04	GBp	357	478.60	XLON	xHaNu19FVMv
22-05-2025	13:45:04	GBp	85	478.60	XLON	xHaNu19FVMx
22-05-2025	13:11:17	GBp	268	478.80	XLON	xHaNu198wdr
22-05-2025	12:58:46	GBp	156	480.20	XLON	xHaNu198ldo
22-05-2025	12:51:33	GBp	167	480.40	XLON	xHaNu198M$E
22-05-2025	12:51:33	GBp	104	480.40	XLON	xHaNu198M$G
22-05-2025	12:51:33	GBp	382	480.60	XLON	xHaNu198M$Q
22-05-2025	12:44:36	GBp	103	481.20	XLON	xHaNu198Hzh
22-05-2025	12:44:36	GBp	132	481.20	XLON	xHaNu198Hzm
22-05-2025	12:44:00	GBp	77	480.80	XLON	xHaNu198HPc
22-05-2025	12:43:45	GBp	4	481.00	XLON	xHaNu198Ujx
22-05-2025	12:43:45	GBp	70	481.00	XLON	xHaNu198Ujz
22-05-2025	12:20:30	GBp	204	478.80	XLON	xHaNu198Ami
22-05-2025	12:20:28	GBp	48	479.20	XLON	xHaNu198ApI
22-05-2025	12:20:25	GBp	156	479.20	XLON	xHaNu198Azq
22-05-2025	12:20:24	GBp	206	479.40	XLON	xHaNu198AyC
22-05-2025	12:02:20	GBp	303	478.20	XLON	xHaNu199xKX
22-05-2025	11:58:30	GBp	39	476.60	XLON	xHaNu199dQb
22-05-2025	11:58:30	GBp	179	476.60	XLON	xHaNu199dQd
22-05-2025	11:58:30	GBp	65	476.60	XLON	xHaNu199dQZ
22-05-2025	11:55:01	GBp	158	476.40	XLON	xHaNu199ZvK
22-05-2025	11:49:30	GBp	119	476.40	XLON	xHaNu199ivu
22-05-2025	11:49:30	GBp	5	476.40	XLON	xHaNu199ivw
22-05-2025	11:39:47	GBp	214	475.00	XLON	xHaNu199LFv
22-05-2025	11:39:46	GBp	1,869	475.60	XLON	xHaNu199LF5
22-05-2025	11:39:46	GBp	78	475.60	XLON	xHaNu199LF7
22-05-2025	11:39:46	GBp	5	475.00	XLON	xHaNu199LFD
22-05-2025	11:39:46	GBp	16	475.00	XLON	xHaNu199LFF
22-05-2025	11:39:46	GBp	21	475.00	XLON	xHaNu199LFH
22-05-2025	11:39:46	GBp	294	475.20	XLON	xHaNu199LFJ
22-05-2025	11:38:24	GBp	9	475.00	XLON	xHaNu199JWV
22-05-2025	11:38:24	GBp	285	475.00	XLON	xHaNu199JZX
22-05-2025	11:30:00	GBp	16	474.80	XLON	xHaNu199Rw5
22-05-2025	11:08:02	GBp	268	474.40	XLON	xHaNu19At4c
22-05-2025	11:07:02	GBp	294	474.60	XLON	xHaNu19Aqml
22-05-2025	11:04:02	GBp	313	474.80	XLON	xHaNu19Apm2
22-05-2025	11:03:02	GBp	294	475.00	XLON	xHaNu19Amwz
22-05-2025	10:50:30	GBp	294	474.40	XLON	xHaNu19Ad4s
22-05-2025	10:50:30	GBp	2	474.60	XLON	xHaNu19Ad4y
22-05-2025	10:50:30	GBp	286	474.60	XLON	xHaNu19Ad4@
22-05-2025	10:48:45	GBp	1	474.60	XLON	xHaNu19Abjz
22-05-2025	10:48:45	GBp	24	474.60	XLON	xHaNu19Abj$
22-05-2025	10:25:18	GBp	167	474.60	XLON	xHaNu19ASqT
22-05-2025	10:19:25	GBp	215	475.20	XLON	xHaNu19APPt
22-05-2025	10:12:11	GBp	170	475.80	XLON	xHaNu19A0LB
22-05-2025	10:07:06	GBp	161	476.80	XLON	xHaNu19ADwL
22-05-2025	10:07:05	GBp	232	477.00	XLON	xHaNu19ADwS
22-05-2025	10:06:32	GBp	297	477.20	XLON	xHaNu19AAdF
22-05-2025	10:03:32	GBp	195	477.40	XLON	xHaNu19A828
22-05-2025	10:03:32	GBp	146	477.40	XLON	xHaNu19A82A
22-05-2025	10:03:31	GBp	291	477.60	XLON	xHaNu19A8DZ
22-05-2025	10:01:56	GBp	185	477.80	XLON	xHaNu19BsYj
22-05-2025	10:01:56	GBp	313	478.00	XLON	xHaNu19BsYl
22-05-2025	09:41:51	GBp	33	475.20	XLON	xHaNu19Bb0B
22-05-2025	09:41:51	GBp	294	475.40	XLON	xHaNu19Bb0C
22-05-2025	09:14:09	GBp	204	475.60	XLON	xHaNu19BOk5
22-05-2025	09:14:09	GBp	294	475.80	XLON	xHaNu19BOk8
22-05-2025	09:14:09	GBp	204	475.80	XLON	xHaNu19BOkH
22-05-2025	09:14:09	GBp	278	476.00	XLON	xHaNu19BOkJ
22-05-2025	09:14:09	GBp	16	476.00	XLON	xHaNu19BOkL
22-05-2025	08:59:53	GBp	35	476.00	XLON	xHaNu19B8BW
22-05-2025	08:55:05	GBp	136	476.00	XLON	xHaNu194rwJ
22-05-2025	08:52:08	GBp	61	476.00	XLON	xHaNu194mLP
22-05-2025	08:52:08	GBp	419	476.00	XLON	xHaNu194mLR
22-05-2025	08:45:34	GBp	270	476.00	XLON	xHaNu194v5B
22-05-2025	08:45:11	GBp	160	476.20	XLON	xHaNu194cZ5
22-05-2025	08:45:06	GBp	205	476.40	XLON	xHaNu194crd
22-05-2025	08:45:00	GBp	1,594	477.20	XLON	xHaNu194cy7
22-05-2025	08:45:00	GBp	179	477.20	XLON	xHaNu194cy9
22-05-2025	08:45:00	GBp	56	477.20	XLON	xHaNu194cyB
22-05-2025	08:45:00	GBp	58	477.20	XLON	xHaNu194cyD
22-05-2025	08:45:00	GBp	128	477.20	XLON	xHaNu194cyF
22-05-2025	08:45:00	GBp	90	477.20	XLON	xHaNu194cyH
22-05-2025	08:45:00	GBp	160	476.60	XLON	xHaNu194cyK
22-05-2025	08:45:00	GBp	229	476.80	XLON	xHaNu194cyM
22-05-2025	08:45:00	GBp	220	477.20	XLON	xHaNu194c$w
22-05-2025	08:45:00	GBp	110	477.20	XLON	xHaNu194c$y
22-05-2025	08:45:00	GBp	185	476.80	XLON	xHaNu194c$9
22-05-2025	08:45:00	GBp	313	477.00	XLON	xHaNu194c$B
22-05-2025	08:45:00	GBp	294	477.20	XLON	xHaNu194c$G
22-05-2025	08:32:17	GBp	189	476.80	XLON	xHaNu194M8h
22-05-2025	08:31:56	GBp	294	477.00	XLON	xHaNu194NrP
22-05-2025	08:29:34	GBp	294	477.20	XLON	xHaNu194Jit
22-05-2025	08:25:46	GBp	41	477.20	XLON	xHaNu194VGz
22-05-2025	08:16:17	GBp	268	477.80	XLON	xHaNu1940be
22-05-2025	08:15:35	GBp	150	478.00	XLON	xHaNu1940Vl
22-05-2025	08:15:35	GBp	261	478.00	XLON	xHaNu1940Vn
22-05-2025	08:15:01	GBp	77	478.80	XLON	xHaNu1941J2
22-05-2025	08:15:01	GBp	47	478.60	XLON	xHaNu1941J4
22-05-2025	08:15:01	GBp	204	478.00	XLON	xHaNu1941JB
22-05-2025	08:15:00	GBp	489	478.80	XLON	xHaNu1941SC
22-05-2025	08:15:00	GBp	10	478.80	XLON	xHaNu1941SE
22-05-2025	08:14:50	GBp	294	478.20	XLON	xHaNu194Ekh
22-05-2025	08:12:49	GBp	313	478.60	XLON	xHaNu194CYU
22-05-2025	08:12:35	GBp	177	478.80	XLON	xHaNu194CnC
22-05-2025	08:12:34	GBp	58	478.80	XLON	xHaNu194Cpb
22-05-2025	08:12:34	GBp	294	477.80	XLON	xHaNu194Cph
22-05-2025	08:10:27	GBp	204	478.80	XLON	xHaNu194Awn
22-05-2025	08:10:21	GBp	294	479.00	XLON	xHaNu194A2y
22-05-2025	08:10:20	GBp	293	479.40	XLON	xHaNu194AD$
22-05-2025	08:10:20	GBp	205	479.20	XLON	xHaNu194ADz
22-05-2025	08:02:58	GBp	367	479.80	XLON	xHaNu195pzj
22-05-2025	08:02:58	GBp	12	479.80	XLON	xHaNu195pzl
22-05-2025	08:02:58	GBp	153	479.80	XLON	xHaNu195pzE
22-05-2025	08:02:58	GBp	174	479.80	XLON	xHaNu195pzM