Transaction in own shares

OSB GROUP PLC                                        
ISIN: GB00BLDRH360
13 June 2025

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 12 June 2025 it had purchased a total of 54,087 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	54,087	-	-
Highest price paid (per ordinary share)	501.50p	-	-
Lowest price paid (per ordinary share)	494.40p	-	-
Volume weighted average price paid (per ordinary share)	497.89p	-	-

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 365,618,012 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 365,618,012.

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
12-06-2025	14:47:23	GBp	16	501.00	XLON	xHaNypoJTCG
12-06-2025	14:47:23	GBp	725	501.00	XLON	xHaNypoJTCI
12-06-2025	14:46:20	GBp	276	501.00	XLON	xHaNypoJRd@
12-06-2025	14:46:20	GBp	61	501.00	XLON	xHaNypoJRdt
12-06-2025	14:46:20	GBp	62	501.00	XLON	xHaNypoJRdv
12-06-2025	14:46:20	GBp	129	501.00	XLON	xHaNypoJRdw
12-06-2025	14:46:20	GBp	750	501.00	XLON	xHaNypoJRdy
12-06-2025	14:46:20	GBp	392	500.50	XLON	xHaNypoJRd9
12-06-2025	14:44:17	GBp	392	501.00	XLON	xHaNypoJPeJ
12-06-2025	14:41:16	GBp	101	501.00	XLON	xHaNypoJ4pJ
12-06-2025	14:41:16	GBp	310	501.00	XLON	xHaNypoJ4pL
12-06-2025	14:41:16	GBp	8	500.50	XLON	xHaNypoJ4pQ
12-06-2025	14:41:05	GBp	156	501.00	XLON	xHaNypoJ4Ft
12-06-2025	14:41:05	GBp	33	501.00	XLON	xHaNypoJ4Fx
12-06-2025	14:35:45	GBp	466	500.50	XLON	xHaNypoJFeU
12-06-2025	14:35:45	GBp	84	500.50	XLON	xHaNypoJFha
12-06-2025	14:35:45	GBp	34	500.50	XLON	xHaNypoJFhW
12-06-2025	14:35:45	GBp	201	500.50	XLON	xHaNypoJFhY
12-06-2025	14:32:52	GBp	87	500.00	XLON	xHaNypoJA8E
12-06-2025	14:32:52	GBp	115	500.00	XLON	xHaNypoJA8G
12-06-2025	14:32:52	GBp	190	500.00	XLON	xHaNypoJA8I
12-06-2025	14:32:52	GBp	578	500.00	XLON	xHaNypoJA8K
12-06-2025	14:30:06	GBp	149	499.60	XLON	xHaNypoCs80
12-06-2025	14:30:06	GBp	39	499.60	XLON	xHaNypoCs82
12-06-2025	14:30:06	GBp	386	499.40	XLON	xHaNypoCs89
12-06-2025	14:30:06	GBp	142	499.40	XLON	xHaNypoCs8B
12-06-2025	14:27:04	GBp	701	499.20	XLON	xHaNypoCoo2
12-06-2025	14:27:04	GBp	791	499.20	XLON	xHaNypoCooA
12-06-2025	14:27:04	GBp	57	499.20	XLON	xHaNypoCooC
12-06-2025	14:27:04	GBp	169	499.20	XLON	xHaNypoCooE
12-06-2025	14:27:04	GBp	117	499.20	XLON	xHaNypoCooG
12-06-2025	14:27:04	GBp	115	499.20	XLON	xHaNypoCooI
12-06-2025	14:27:04	GBp	750	499.20	XLON	xHaNypoCooK
12-06-2025	14:06:07	GBp	248	498.00	XLON	xHaNypoCWKI
12-06-2025	14:04:51	GBp	262	498.00	XLON	xHaNypoCXV0
12-06-2025	14:03:00	GBp	189	498.20	XLON	xHaNypoCl1Y
12-06-2025	14:01:07	GBp	8	498.20	XLON	xHaNypoCjxc
12-06-2025	14:01:07	GBp	308	498.20	XLON	xHaNypoCjxe
12-06-2025	14:01:07	GBp	456	498.40	XLON	xHaNypoCjxj
12-06-2025	14:01:07	GBp	95	498.60	XLON	xHaNypoCjxL
12-06-2025	14:01:07	GBp	268	498.60	XLON	xHaNypoCjxJ
12-06-2025	13:57:11	GBp	68	498.80	XLON	xHaNypoCeFL
12-06-2025	13:57:11	GBp	750	498.80	XLON	xHaNypoCeFN
12-06-2025	13:57:11	GBp	48	498.80	XLON	xHaNypoCeFP
12-06-2025	13:57:11	GBp	333	498.60	XLON	xHaNypoCeEb
12-06-2025	13:52:12	GBp	16	498.80	XLON	xHaNypoCK@A
12-06-2025	13:52:12	GBp	77	498.80	XLON	xHaNypoCK@C
12-06-2025	13:52:12	GBp	314	498.80	XLON	xHaNypoCKvZ
12-06-2025	13:42:35	GBp	213	497.40	XLON	xHaNypoCSTP
12-06-2025	13:42:03	GBp	350	497.60	XLON	xHaNypoCTs@
12-06-2025	13:37:20	GBp	316	498.00	XLON	xHaNypoCO$2
12-06-2025	13:37:20	GBp	531	498.20	XLON	xHaNypoCO$A
12-06-2025	13:36:41	GBp	116	498.60	XLON	xHaNypoCOP0
12-06-2025	13:36:41	GBp	117	498.60	XLON	xHaNypoCOP2
12-06-2025	13:36:41	GBp	59	498.60	XLON	xHaNypoCOP4
12-06-2025	13:36:26	GBp	95	498.60	XLON	xHaNypoCPZd
12-06-2025	13:36:26	GBp	123	498.60	XLON	xHaNypoCPZh
12-06-2025	13:36:26	GBp	10	498.60	XLON	xHaNypoCPZj
12-06-2025	13:36:26	GBp	16	498.60	XLON	xHaNypoCPZn
12-06-2025	13:30:00	GBp	450	496.20	XLON	xHaNypoC5IB
12-06-2025	13:28:56	GBp	40	496.40	XLON	xHaNypoC2A4
12-06-2025	13:28:56	GBp	363	496.40	XLON	xHaNypoC2A6
12-06-2025	13:28:56	GBp	125	496.40	XLON	xHaNypoC2AH
12-06-2025	13:28:56	GBp	25	496.40	XLON	xHaNypoC2AK
12-06-2025	13:28:56	GBp	93	496.40	XLON	xHaNypoC2AM
12-06-2025	13:28:56	GBp	314	496.20	XLON	xHaNypoC2AV
12-06-2025	13:16:02	GBp	252	496.00	XLON	xHaNypoCAup
12-06-2025	13:16:02	GBp	363	496.20	XLON	xHaNypoCAur
12-06-2025	13:14:17	GBp	138	497.20	XLON	xHaNypoCBFS
12-06-2025	13:14:17	GBp	89	497.20	XLON	xHaNypoCBFU
12-06-2025	13:14:17	GBp	239	497.60	XLON	xHaNypoCBEZ
12-06-2025	13:14:17	GBp	73	497.60	XLON	xHaNypoCBEb
12-06-2025	13:14:17	GBp	96	497.60	XLON	xHaNypoCBEd
12-06-2025	13:14:17	GBp	150	497.40	XLON	xHaNypoCBEf
12-06-2025	13:14:17	GBp	134	497.20	XLON	xHaNypoCBEh
12-06-2025	13:14:17	GBp	532	497.20	XLON	xHaNypoCBEj
12-06-2025	13:14:17	GBp	217	497.00	XLON	xHaNypoCBEr
12-06-2025	13:14:17	GBp	8	497.20	XLON	xHaNypoCBE1
12-06-2025	13:14:17	GBp	306	497.20	XLON	xHaNypoCBE3
12-06-2025	12:58:58	GBp	191	497.00	XLON	xHaNypoDn6k
12-06-2025	12:58:58	GBp	253	496.80	XLON	xHaNypoDn6r
12-06-2025	12:58:58	GBp	61	496.80	XLON	xHaNypoDn6t
12-06-2025	12:58:56	GBp	314	497.00	XLON	xHaNypoDn1e
12-06-2025	12:52:03	GBp	402	496.60	XLON	xHaNypoDzMZ
12-06-2025	12:52:03	GBp	314	496.40	XLON	xHaNypoDzMe
12-06-2025	12:51:50	GBp	188	496.60	XLON	xHaNypoDzO9
12-06-2025	12:46:48	GBp	6,465	496.80	XLON	xHaNypoDvo@
12-06-2025	12:46:48	GBp	15	496.80	XLON	xHaNypoDvo2
12-06-2025	12:06:54	GBp	210	495.60	XLON	xHaNypoDVlL
12-06-2025	12:06:54	GBp	30	495.60	XLON	xHaNypoDVlN
12-06-2025	12:06:54	GBp	69	495.60	XLON	xHaNypoDVlP
12-06-2025	12:06:54	GBp	116	495.60	XLON	xHaNypoDVlR
12-06-2025	11:49:07	GBp	312	494.80	XLON	xHaNypoD3rw
12-06-2025	11:42:10	GBp	314	494.80	XLON	xHaNypoDFPb
12-06-2025	11:24:14	GBp	334	494.40	XLON	xHaNypoEpIC
12-06-2025	11:24:13	GBp	485	494.60	XLON	xHaNypoEpTm
12-06-2025	11:24:08	GBp	131	495.00	XLON	xHaNypoEpQA
12-06-2025	11:24:08	GBp	15	495.00	XLON	xHaNypoEpQF
12-06-2025	11:24:08	GBp	132	495.00	XLON	xHaNypoEmaW
12-06-2025	11:24:08	GBp	75	495.00	XLON	xHaNypoEmax
12-06-2025	11:24:08	GBp	19	495.00	XLON	xHaNypoEmaz
12-06-2025	11:24:08	GBp	46	495.00	XLON	xHaNypoEma$
12-06-2025	11:12:30	GBp	221	494.60	XLON	xHaNypoExOv
12-06-2025	11:10:21	GBp	213	494.80	XLON	xHaNypoEv00
12-06-2025	11:10:19	GBp	98	495.00	XLON	xHaNypoEv0T
12-06-2025	11:10:19	GBp	119	495.00	XLON	xHaNypoEv0V
12-06-2025	11:09:42	GBp	164	495.20	XLON	xHaNypoEcXa
12-06-2025	11:09:42	GBp	183	495.40	XLON	xHaNypoEcXp
12-06-2025	11:09:42	GBp	90	495.40	XLON	xHaNypoEcXr
12-06-2025	11:09:41	GBp	1,228	496.00	XLON	xHaNypoEcX9
12-06-2025	11:09:41	GBp	15	496.00	XLON	xHaNypoEcXB
12-06-2025	11:09:41	GBp	116	496.00	XLON	xHaNypoEcXD
12-06-2025	11:09:41	GBp	18	496.00	XLON	xHaNypoEcXF
12-06-2025	11:09:41	GBp	333	495.60	XLON	xHaNypoEcXN
12-06-2025	10:49:48	GBp	282	494.80	XLON	xHaNypoEeDT
12-06-2025	10:45:10	GBp	212	495.20	XLON	xHaNypoEKi2
12-06-2025	10:44:46	GBp	306	495.40	XLON	xHaNypoEK5A
12-06-2025	10:40:18	GBp	274	496.00	XLON	xHaNypoEJAs
12-06-2025	10:39:31	GBp	181	496.60	XLON	xHaNypoEGmm
12-06-2025	10:39:31	GBp	66	496.60	XLON	xHaNypoEGmr
12-06-2025	10:39:31	GBp	485	496.20	XLON	xHaNypoEGmw
12-06-2025	10:30:03	GBp	140	496.20	XLON	xHaNypoERzL
12-06-2025	10:30:03	GBp	203	496.40	XLON	xHaNypoERzR
12-06-2025	10:28:29	GBp	223	496.60	XLON	xHaNypoEO85
12-06-2025	10:25:13	GBp	302	496.80	XLON	xHaNypoE7j4
12-06-2025	10:25:13	GBp	356	497.00	XLON	xHaNypoE7jL
12-06-2025	10:21:16	GBp	221	497.00	XLON	xHaNypoE5OB
12-06-2025	10:21:16	GBp	593	497.20	XLON	xHaNypoE5OF
12-06-2025	10:19:36	GBp	73	497.40	XLON	xHaNypoE3lc
12-06-2025	10:19:36	GBp	460	497.20	XLON	xHaNypoE3le
12-06-2025	10:19:36	GBp	217	497.20	XLON	xHaNypoE3lt
12-06-2025	10:19:27	GBp	314	497.40	XLON	xHaNypoE3oX
12-06-2025	10:15:42	GBp	193	497.40	XLON	xHaNypoEEak
12-06-2025	10:15:42	GBp	121	497.40	XLON	xHaNypoEEam
12-06-2025	10:09:07	GBp	314	497.40	XLON	xHaNypoEBf9
12-06-2025	10:00:06	GBp	310	497.60	XLON	xHaNypoFoxI
12-06-2025	10:00:06	GBp	260	497.80	XLON	xHaNypoFoxO
12-06-2025	09:59:46	GBp	314	497.80	XLON	xHaNypoFoSY
12-06-2025	09:53:21	GBp	716	497.40	XLON	xHaNypoF$OU
12-06-2025	09:50:27	GBp	314	497.00	XLON	xHaNypoFw5Y
12-06-2025	09:46:54	GBp	201	496.80	XLON	xHaNypoFv9U
12-06-2025	09:46:54	GBp	330	497.00	XLON	xHaNypoFv8W
12-06-2025	09:45:32	GBp	330	497.00	XLON	xHaNypoFcAC
12-06-2025	09:33:23	GBp	255	496.60	XLON	xHaNypoFlMI
12-06-2025	09:29:44	GBp	252	497.00	XLON	xHaNypoFg79
12-06-2025	09:28:50	GBp	258	497.20	XLON	xHaNypoFhgB
12-06-2025	09:28:50	GBp	226	497.40	XLON	xHaNypoFhgD
12-06-2025	09:22:46	GBp	294	497.80	XLON	xHaNypoFKqv
12-06-2025	09:22:46	GBp	421	497.60	XLON	xHaNypoFKqT
12-06-2025	09:17:03	GBp	173	498.20	XLON	xHaNypoFGBa
12-06-2025	09:17:03	GBp	251	498.40	XLON	xHaNypoFGBi
12-06-2025	09:13:07	GBp	260	498.60	XLON	xHaNypoFV6M
12-06-2025	09:12:57	GBp	375	498.80	XLON	xHaNypoFVAw
12-06-2025	09:12:46	GBp	608	499.00	XLON	xHaNypoFVIk
12-06-2025	09:11:04	GBp	314	498.60	XLON	xHaNypoFTfb
12-06-2025	09:04:55	GBp	168	497.40	XLON	xHaNypoF6a8
12-06-2025	09:01:37	GBp	164	497.40	XLON	xHaNypoF4Dt
12-06-2025	09:01:33	GBp	135	498.00	XLON	xHaNypoF4LI
12-06-2025	09:01:33	GBp	276	498.00	XLON	xHaNypoF4LK
12-06-2025	09:01:33	GBp	217	497.60	XLON	xHaNypoF4Kb
12-06-2025	09:01:33	GBp	314	497.80	XLON	xHaNypoF4Kh
12-06-2025	08:51:19	GBp	319	498.00	XLON	xHaNypoFCA@
12-06-2025	08:51:04	GBp	290	498.20	XLON	xHaNypoFCSx
12-06-2025	08:46:49	GBp	134	498.40	XLON	xHaNypoF8kI
12-06-2025	08:46:39	GBp	196	498.60	XLON	xHaNypoF8nD
12-06-2025	08:46:33	GBp	228	498.60	XLON	xHaNypoF8z6
12-06-2025	08:46:33	GBp	8	498.80	XLON	xHaNypoF8zN
12-06-2025	08:46:29	GBp	523	498.80	XLON	xHaNypoF8v3
12-06-2025	08:46:22	GBp	1,296	499.20	XLON	xHaNypoF875
12-06-2025	08:46:22	GBp	170	499.20	XLON	xHaNypoF879
12-06-2025	08:46:22	GBp	15	499.20	XLON	xHaNypoF87B
12-06-2025	08:46:22	GBp	314	499.00	XLON	xHaNypoF87G
12-06-2025	08:44:17	GBp	284	499.20	XLON	xHaNypo8sqf
12-06-2025	08:44:17	GBp	180	499.20	XLON	xHaNypo8sqk
12-06-2025	08:44:14	GBp	180	499.20	XLON	xHaNypo8snB
12-06-2025	08:44:14	GBp	148	499.00	XLON	xHaNypo8snO
12-06-2025	08:44:14	GBp	213	499.20	XLON	xHaNypo8snQ
12-06-2025	08:44:12	GBp	615	499.40	XLON	xHaNypo8spB
12-06-2025	08:44:12	GBp	262	499.40	XLON	xHaNypo8spG
12-06-2025	08:44:12	GBp	217	499.40	XLON	xHaNypo8spR
12-06-2025	08:44:12	GBp	314	499.60	XLON	xHaNypo8spV
12-06-2025	08:32:39	GBp	264	499.80	XLON	xHaNypo8$Ce
12-06-2025	08:32:11	GBp	193	499.80	XLON	xHaNypo8ykv
12-06-2025	08:32:10	GBp	314	500.00	XLON	xHaNypo8ykB
12-06-2025	08:32:10	GBp	314	500.50	XLON	xHaNypo8ykP
12-06-2025	08:15:17	GBp	297	500.50	XLON	xHaNypo8XPp
12-06-2025	08:15:17	GBp	300	499.80	XLON	xHaNypo8XPv
12-06-2025	08:15:09	GBp	229	501.50	XLON	xHaNypo8ki$
12-06-2025	08:15:09	GBp	110	501.50	XLON	xHaNypo8ki1
12-06-2025	08:13:45	GBp	44	499.60	XLON	xHaNypo8ltF
12-06-2025	08:13:45	GBp	150	499.60	XLON	xHaNypo8ltH
12-06-2025	08:13:45	GBp	286	499.60	XLON	xHaNypo8ltJ
12-06-2025	08:13:45	GBp	272	499.00	XLON	xHaNypo8ltR
12-06-2025	08:13:45	GBp	124	498.80	XLON	xHaNypo8ltT
12-06-2025	08:13:45	GBp	217	498.80	XLON	xHaNypo8lsW
12-06-2025	08:13:45	GBp	217	498.80	XLON	xHaNypo8lsc
12-06-2025	08:13:45	GBp	314	499.00	XLON	xHaNypo8lse