OSB Group PLC

Transaction in Own Shares • Dec 22, 2025

National Storage Mechanism | Additional information

OSB GROUP PLC                                        

ISIN: GB00BLDRH360

22 December 2025

LEI number: 213800ZBKL9BHSL2K459

OSB GROUP PLC (the “Company”)

Transaction in Own Shares

The Company announces that on 19 December 2025 it had purchased a total of 101,346 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	101,346	-	-
Highest price paid (per ordinary share)	632.00p	-	-
Lowest price paid (per ordinary share)	628.50p	-	-
Volume weighted average price paid (per ordinary share)	630.68p	-	-

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 356,397,278 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 356,397,278.

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
19-12-2025	16:28:43	GBp	1,071	630.50	XLON	xeaMPcVbRrP
19-12-2025	16:28:43	GBp	450	631.00	XLON	xeaMPcVbRrR
19-12-2025	16:28:43	GBp	100	631.00	XLON	xeaMPcVbRrT
19-12-2025	16:28:43	GBp	550	631.00	XLON	xeaMPcVbRqA
19-12-2025	16:28:43	GBp	550	631.00	XLON	xeaMPcVbRqI
19-12-2025	16:28:43	GBp	108	631.00	XLON	xeaMPcVbRsa
19-12-2025	16:28:43	GBp	442	631.00	XLON	xeaMPcVbRsY
19-12-2025	16:28:43	GBp	49	630.50	XLON	xeaMPcVbRsh
19-12-2025	16:28:43	GBp	173	631.00	XLON	xeaMPcVbRsi
19-12-2025	16:28:42	GBp	692	631.00	XLON	xeaMPcVbRst
19-12-2025	16:28:42	GBp	173	631.00	XLON	xeaMPcVbRsv
19-12-2025	16:28:42	GBp	500	631.00	XLON	xeaMPcVbRsH
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRsR
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRnX
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRnd
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRnj
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRnt
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRnz
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRn3
19-12-2025	16:28:42	GBp	792	631.00	XLON	xeaMPcVbRn8
19-12-2025	16:28:42	GBp	609	631.00	XLON	xeaMPcVbRnG
19-12-2025	16:28:42	GBp	62	631.00	XLON	xeaMPcVbRnV
19-12-2025	16:28:42	GBp	182	631.00	XLON	xeaMPcVbRnR
19-12-2025	16:28:42	GBp	100	631.00	XLON	xeaMPcVbRnT
19-12-2025	16:26:22	GBp	1,046	630.00	XLON	xeaMPcVbPQF
19-12-2025	16:25:07	GBp	291	631.00	XLON	xeaMPcVb78t
19-12-2025	16:25:07	GBp	210	631.00	XLON	xeaMPcVb78y
19-12-2025	16:25:07	GBp	470	631.00	XLON	xeaMPcVb78@
19-12-2025	16:25:07	GBp	450	631.00	XLON	xeaMPcVb780
19-12-2025	16:25:07	GBp	3,230	631.00	XLON	xeaMPcVb78L
19-12-2025	16:25:07	GBp	470	631.00	XLON	xeaMPcVb78N
19-12-2025	16:25:07	GBp	3	631.00	XLON	xeaMPcVb78P
19-12-2025	16:25:07	GBp	530	631.00	XLON	xeaMPcVb78R
19-12-2025	16:25:07	GBp	4,329	631.00	XLON	xeaMPcVb7BW
19-12-2025	16:25:07	GBp	506	631.00	XLON	xeaMPcVb7BY
19-12-2025	16:25:07	GBp	5,018	631.00	XLON	xeaMPcVb7Bl
19-12-2025	16:25:07	GBp	530	631.00	XLON	xeaMPcVb7Bn
19-12-2025	16:25:07	GBp	86	631.00	XLON	xeaMPcVb7B3
19-12-2025	16:25:07	GBp	1,660	631.00	XLON	xeaMPcVb7B5
19-12-2025	16:25:07	GBp	598	631.00	XLON	xeaMPcVb7B9
19-12-2025	16:25:07	GBp	457	631.00	XLON	xeaMPcVb7BB
19-12-2025	16:25:07	GBp	67	631.00	XLON	xeaMPcVb7BD
19-12-2025	16:25:07	GBp	3	631.00	XLON	xeaMPcVb7BE
19-12-2025	16:25:07	GBp	37	631.00	XLON	xeaMPcVb7BG
19-12-2025	16:25:07	GBp	1,347	631.00	XLON	xeaMPcVb7BI
19-12-2025	16:22:18	GBp	1,046	630.50	XLON	xeaMPcVb3rf
19-12-2025	16:11:00	GBp	284	630.50	XLON	xeaMPcVb90c
19-12-2025	16:11:00	GBp	138	630.50	XLON	xeaMPcVb93Z
19-12-2025	16:10:58	GBp	155	630.50	XLON	xeaMPcVb9DV
19-12-2025	16:10:51	GBp	182	630.50	XLON	xeaMPcVb99G
19-12-2025	16:05:00	GBp	1,752	630.50	XLON	xeaMPcVco4$
19-12-2025	16:05:00	GBp	25	630.50	XLON	xeaMPcVco41
19-12-2025	16:04:49	GBp	327	631.00	XLON	xeaMPcVcoEw
19-12-2025	16:04:46	GBp	177	631.00	XLON	xeaMPcVco8Q
19-12-2025	16:04:44	GBp	300	631.00	XLON	xeaMPcVcoKx
19-12-2025	16:04:41	GBp	57	631.00	XLON	xeaMPcVcoHX
19-12-2025	16:04:41	GBp	120	631.00	XLON	xeaMPcVcoHZ
19-12-2025	16:04:28	GBp	253	631.00	XLON	xeaMPcVcpj@
19-12-2025	16:04:28	GBp	69	631.00	XLON	xeaMPcVcpj6
19-12-2025	16:04:28	GBp	500	631.00	XLON	xeaMPcVcpj8
19-12-2025	16:04:28	GBp	116	631.00	XLON	xeaMPcVcpjH
19-12-2025	16:04:28	GBp	244	631.00	XLON	xeaMPcVcpjM
19-12-2025	16:04:28	GBp	244	631.00	XLON	xeaMPcVcpjV
19-12-2025	16:04:28	GBp	137	631.00	XLON	xeaMPcVcpia
19-12-2025	16:04:28	GBp	235	631.00	XLON	xeaMPcVcpic
19-12-2025	16:04:28	GBp	251	631.00	XLON	xeaMPcVcpik
19-12-2025	16:04:28	GBp	500	631.00	XLON	xeaMPcVcpim
19-12-2025	16:04:28	GBp	1	631.00	XLON	xeaMPcVcpis
19-12-2025	16:04:28	GBp	179	631.00	XLON	xeaMPcVcpiD
19-12-2025	16:04:28	GBp	346	631.00	XLON	xeaMPcVcplj
19-12-2025	16:04:27	GBp	814	631.00	XLON	xeaMPcVcplp
19-12-2025	16:04:27	GBp	522	631.00	XLON	xeaMPcVcpl0
19-12-2025	16:04:27	GBp	523	631.00	XLON	xeaMPcVcplA
19-12-2025	16:04:27	GBp	540	631.00	XLON	xeaMPcVcplG
19-12-2025	16:04:27	GBp	357	631.00	XLON	xeaMPcVcpkk
19-12-2025	16:00:05	GBp	197	630.00	XLON	xeaMPcVc$t5
19-12-2025	16:00:05	GBp	319	630.00	XLON	xeaMPcVc$t7
19-12-2025	16:00:02	GBp	1,777	630.50	XLON	xeaMPcVc$mf
19-12-2025	15:59:43	GBp	1,085	631.50	XLON	xeaMPcVc$9z
19-12-2025	15:59:43	GBp	1,055	631.50	XLON	xeaMPcVc$9G
19-12-2025	15:59:43	GBp	1,097	631.50	XLON	xeaMPcVc$8@
19-12-2025	15:59:43	GBp	1,088	631.50	XLON	xeaMPcVc$86
19-12-2025	15:59:43	GBp	227	631.50	XLON	xeaMPcVc$8C
19-12-2025	15:59:43	GBp	500	631.50	XLON	xeaMPcVc$8E
19-12-2025	15:59:43	GBp	117	631.50	XLON	xeaMPcVc$8G
19-12-2025	15:59:43	GBp	33	631.50	XLON	xeaMPcVc$8I
19-12-2025	15:59:43	GBp	188	631.50	XLON	xeaMPcVc$8K
19-12-2025	15:59:43	GBp	1,071	631.50	XLON	xeaMPcVc$8Q
19-12-2025	15:59:42	GBp	1,373	631.50	XLON	xeaMPcVc$Ba
19-12-2025	15:59:42	GBp	259	631.50	XLON	xeaMPcVc$Bc
19-12-2025	15:59:42	GBp	500	631.50	XLON	xeaMPcVc$Be
19-12-2025	15:59:42	GBp	999	631.50	XLON	xeaMPcVc$Bk
19-12-2025	15:59:42	GBp	482	631.50	XLON	xeaMPcVc$Bm
19-12-2025	15:59:42	GBp	484	631.50	XLON	xeaMPcVc$Bs
19-12-2025	15:59:42	GBp	482	631.50	XLON	xeaMPcVc$Bu
19-12-2025	15:59:42	GBp	751	631.50	XLON	xeaMPcVc$B@
19-12-2025	15:59:42	GBp	752	631.50	XLON	xeaMPcVc$BB
19-12-2025	15:59:42	GBp	749	631.50	XLON	xeaMPcVc$BT
19-12-2025	15:59:42	GBp	729	631.50	XLON	xeaMPcVc$Ai
19-12-2025	15:59:42	GBp	746	631.50	XLON	xeaMPcVc$LX
19-12-2025	15:59:41	GBp	745	631.50	XLON	xeaMPcVc$Lv
19-12-2025	15:59:41	GBp	733	631.50	XLON	xeaMPcVc$L@
19-12-2025	15:55:15	GBp	1,046	630.50	XLON	xeaMPcVcuOI
19-12-2025	15:50:34	GBp	228	630.50	XLON	xeaMPcVcb0p
19-12-2025	15:50:00	GBp	440	631.00	XLON	xeaMPcVcYZ7
19-12-2025	15:50:00	GBp	589	631.00	XLON	xeaMPcVcYZ9
19-12-2025	15:48:06	GBp	17	631.00	XLON	xeaMPcVcZLx
19-12-2025	15:45:05	GBp	117	631.00	XLON	xeaMPcVckNp
19-12-2025	15:42:01	GBp	224	631.00	XLON	xeaMPcVcgXA
19-12-2025	15:41:16	GBp	1,046	631.50	XLON	xeaMPcVcgKW
19-12-2025	15:39:51	GBp	268	631.50	XLON	xeaMPcVcesf
19-12-2025	15:38:24	GBp	488	632.00	XLON	xeaMPcVcfAc
19-12-2025	15:38:24	GBp	558	632.00	XLON	xeaMPcVcfAe
19-12-2025	13:44:38	GBp	1,164	632.00	XLON	xeaMPcVWY9m
19-12-2025	13:44:38	GBp	1,746	631.50	XLON	xeaMPcVWY95
19-12-2025	13:44:38	GBp	1,746	631.50	XLON	xeaMPcVWY97
19-12-2025	13:44:38	GBp	4	631.50	XLON	xeaMPcVWY9B
19-12-2025	13:25:34	GBp	807	630.50	XLON	xeaMPcVWKD6
19-12-2025	13:25:34	GBp	102	630.50	XLON	xeaMPcVWKD8
19-12-2025	13:14:56	GBp	506	631.00	XLON	xeaMPcVWUB5
19-12-2025	13:14:56	GBp	1,161	631.50	XLON	xeaMPcVWUB7
19-12-2025	13:09:21	GBp	239	632.00	XLON	xeaMPcVWQtH
19-12-2025	13:09:21	GBp	9	632.00	XLON	xeaMPcVWQtR
19-12-2025	13:09:21	GBp	3	632.00	XLON	xeaMPcVWQtT
19-12-2025	13:09:21	GBp	46	632.00	XLON	xeaMPcVWQtU
19-12-2025	13:09:21	GBp	150	632.00	XLON	xeaMPcVWQsW
19-12-2025	13:05:53	GBp	216	631.50	XLON	xeaMPcVWOwc
19-12-2025	12:59:55	GBp	41	631.50	XLON	xeaMPcVW4e0
19-12-2025	12:59:55	GBp	156	631.50	XLON	xeaMPcVW4e4
19-12-2025	12:59:55	GBp	208	631.50	XLON	xeaMPcVW4e6
19-12-2025	12:59:55	GBp	156	631.50	XLON	xeaMPcVW4e8
19-12-2025	12:59:55	GBp	105	631.50	XLON	xeaMPcVW4eA
19-12-2025	12:59:55	GBp	53	631.50	XLON	xeaMPcVW4eC
19-12-2025	12:44:20	GBp	278	629.50	XLON	xeaMPcVWALu
19-12-2025	12:44:20	GBp	127	629.50	XLON	xeaMPcVWALw
19-12-2025	12:44:20	GBp	138	629.50	XLON	xeaMPcVWALy
19-12-2025	12:43:42	GBp	162	629.50	XLON	xeaMPcVWBXH
19-12-2025	12:43:42	GBp	120	629.50	XLON	xeaMPcVWBXJ
19-12-2025	12:43:04	GBp	142	629.50	XLON	xeaMPcVWBu5
19-12-2025	12:43:04	GBp	127	629.50	XLON	xeaMPcVWBu7
19-12-2025	12:43:04	GBp	24	629.50	XLON	xeaMPcVWBu9
19-12-2025	12:43:04	GBp	46	629.50	XLON	xeaMPcVWBuB
19-12-2025	12:41:48	GBp	308	629.50	XLON	xeaMPcVW8gu
19-12-2025	12:40:32	GBp	318	629.50	XLON	xeaMPcVW8IO
19-12-2025	12:39:16	GBp	90	629.50	XLON	xeaMPcVW91c
19-12-2025	12:39:16	GBp	189	629.50	XLON	xeaMPcVW91e
19-12-2025	12:39:16	GBp	43	629.50	XLON	xeaMPcVW91g
19-12-2025	12:38:00	GBp	249	629.50	XLON	xeaMPcVXsz6
19-12-2025	12:36:06	GBp	98	629.50	XLON	xeaMPcVXtp$
19-12-2025	12:36:06	GBp	125	629.50	XLON	xeaMPcVXtp1
19-12-2025	12:33:34	GBp	125	629.50	XLON	xeaMPcVXqNr
19-12-2025	12:33:34	GBp	246	629.50	XLON	xeaMPcVXqNt
19-12-2025	12:33:34	GBp	28	629.50	XLON	xeaMPcVXqNv
19-12-2025	12:31:40	GBp	604	629.50	XLON	xeaMPcVXoza
19-12-2025	12:30:51	GBp	149	629.50	XLON	xeaMPcVXoVS
19-12-2025	12:30:51	GBp	12	629.50	XLON	xeaMPcVXoVU
19-12-2025	12:30:51	GBp	132	629.50	XLON	xeaMPcVXoUW
19-12-2025	12:29:05	GBp	582	628.50	XLON	xeaMPcVXpUS
19-12-2025	12:29:05	GBp	209	628.50	XLON	xeaMPcVXpUU
19-12-2025	12:24:47	GBp	9	629.50	XLON	xeaMPcVX@7$
19-12-2025	12:24:47	GBp	400	629.50	XLON	xeaMPcVX@71
19-12-2025	12:24:47	GBp	140	629.50	XLON	xeaMPcVX@73
19-12-2025	12:24:47	GBp	122	629.50	XLON	xeaMPcVX@7z
19-12-2025	12:23:26	GBp	207	629.00	XLON	xeaMPcVX$va
19-12-2025	12:23:26	GBp	27	629.00	XLON	xeaMPcVX$vk
19-12-2025	12:23:26	GBp	87	629.00	XLON	xeaMPcVX$vp
19-12-2025	12:23:26	GBp	63	629.00	XLON	xeaMPcVX$vr
19-12-2025	12:20:51	GBp	624	628.50	XLON	xeaMPcVXzvC
19-12-2025	12:20:51	GBp	85	628.50	XLON	xeaMPcVXzvE
19-12-2025	12:18:16	GBp	705	629.00	XLON	xeaMPcVXxjZ
19-12-2025	12:12:59	GBp	903	629.00	XLON	xeaMPcVXc$z
19-12-2025	12:05:18	GBp	599	629.50	XLON	xeaMPcVXZkV
19-12-2025	11:58:48	GBp	1,132	629.50	XLON	xeaMPcVXjb3
19-12-2025	11:58:48	GBp	969	630.00	XLON	xeaMPcVXjb4
19-12-2025	11:54:46	GBp	177	629.50	XLON	xeaMPcVXhSV
19-12-2025	11:52:24	GBp	109	629.50	XLON	xeaMPcVXePw
19-12-2025	11:52:24	GBp	127	629.50	XLON	xeaMPcVXePy
19-12-2025	11:50:30	GBp	377	629.50	XLON	xeaMPcVXfOg
19-12-2025	11:50:30	GBp	201	629.50	XLON	xeaMPcVXfOi
19-12-2025	11:50:30	GBp	123	629.50	XLON	xeaMPcVXfOk
19-12-2025	11:49:14	GBp	127	629.50	XLON	xeaMPcVXMRi
19-12-2025	11:49:14	GBp	107	629.50	XLON	xeaMPcVXMRk
19-12-2025	11:47:20	GBp	221	629.50	XLON	xeaMPcVXKei
19-12-2025	11:47:20	GBp	102	629.50	XLON	xeaMPcVXKek
19-12-2025	11:47:20	GBp	176	629.50	XLON	xeaMPcVXKem
19-12-2025	11:47:20	GBp	250	629.50	XLON	xeaMPcVXKeo
19-12-2025	11:46:04	GBp	14	629.50	XLON	xeaMPcVXLZI
19-12-2025	11:46:04	GBp	130	629.50	XLON	xeaMPcVXLZK
19-12-2025	11:46:04	GBp	154	629.50	XLON	xeaMPcVXLZM
19-12-2025	11:44:48	GBp	466	629.50	XLON	xeaMPcVXLKQ
19-12-2025	11:43:32	GBp	314	629.50	XLON	xeaMPcVXI54
19-12-2025	11:43:32	GBp	82	629.50	XLON	xeaMPcVXI56
19-12-2025	11:41:00	GBp	46	629.50	XLON	xeaMPcVXGhR
19-12-2025	11:41:00	GBp	247	629.50	XLON	xeaMPcVXGhT
19-12-2025	11:37:50	GBp	533	629.50	XLON	xeaMPcVXHTy
19-12-2025	11:36:51	GBp	3,058	629.00	XLON	xeaMPcVXUDo
19-12-2025	11:36:51	GBp	340	629.00	XLON	xeaMPcVXUDq
19-12-2025	11:36:51	GBp	690	629.00	XLON	xeaMPcVXUDs
19-12-2025	11:36:51	GBp	118	629.00	XLON	xeaMPcVXUDu
19-12-2025	11:36:51	GBp	250	629.00	XLON	xeaMPcVXUDw
19-12-2025	11:36:51	GBp	116	629.00	XLON	xeaMPcVXUD@
19-12-2025	11:36:51	GBp	500	628.50	XLON	xeaMPcVXUDF
19-12-2025	11:28:00	GBp	497	629.00	XLON	xeaMPcVXRdx
19-12-2025	11:09:38	GBp	451	629.50	XLON	xeaMPcVXF58
19-12-2025	11:09:38	GBp	234	629.50	XLON	xeaMPcVXF5A
19-12-2025	11:06:25	GBp	238	630.00	XLON	xeaMPcVXDxm
19-12-2025	11:05:34	GBp	251	630.00	XLON	xeaMPcVXAjm
19-12-2025	11:05:32	GBp	1,692	630.00	XLON	xeaMPcVXAlS
19-12-2025	11:05:32	GBp	259	630.00	XLON	xeaMPcVXAlU
19-12-2025	10:49:50	GBp	359	630.00	XLON	xeaMPcVYNu1
19-12-2025	10:49:40	GBp	204	630.00	XLON	xeaMPcVYN3A
19-12-2025	10:36:41	GBp	746	630.00	XLON	xeaMPcVYVBi
19-12-2025	10:17:32	GBp	461	630.00	XLON	xeaMPcVY1CF