OSB GROUP PLC - Transaction in Own Shares

OSB GROUP PLC
ISIN: GB00BLDRH360
21 January 2026

LEI number: 213800ZBKL9BHSL2K459

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

The Company announces that on 20 January 2026 it had purchased a total of 85,102 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	81,004	4,098	-
Highest price paid (per ordinary share)	633.00p	630.00p	-
Lowest price paid (per ordinary share)	625.50p	628.50p	-
Volume weighted average price paid (per ordinary share)	629.99p	629.62p	-

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 355,341,926 ordinary shares.

No ordinary shares are held in treasury. Therefore, the total number of voting rights in the Company is 355,341,926.

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
20-01-2026	16:28:13	GBp	500	630.00	XLON	xeaMUypF5$b
20-01-2026	16:28:13	GBp	269	630.00	XLON	xeaMUypF5$Z
20-01-2026	16:28:13	GBp	120	630.00	XLON	xeaMUypF5$h
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5$I
20-01-2026	16:28:12	GBp	269	630.00	XLON	xeaMUypF5@c
20-01-2026	16:28:12	GBp	500	630.00	XLON	xeaMUypF5@e
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5@6
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5vv
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5v3
20-01-2026	16:28:12	GBp	97	630.00	XLON	xeaMUypF5vG
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5vI
20-01-2026	16:28:12	GBp	120	630.00	XLON	xeaMUypF5u1
20-01-2026	16:28:11	GBp	120	630.00	XLON	xeaMUypF5w2
20-01-2026	16:28:10	GBp	460	630.00	XLON	xeaMUypF55z
20-01-2026	16:28:10	GBp	180	630.00	XLON	xeaMUypF55H
20-01-2026	16:28:10	GBp	8	630.00	XLON	xeaMUypF55J
20-01-2026	16:28:10	GBp	182	630.00	XLON	xeaMUypF55S
20-01-2026	16:28:10	GBp	170	630.00	XLON	xeaMUypF54q
20-01-2026	16:28:10	GBp	48	630.00	XLON	xeaMUypF54s
20-01-2026	16:28:10	GBp	23	630.00	XLON	xeaMUypF54C
20-01-2026	16:28:10	GBp	141	630.00	XLON	xeaMUypF54H
20-01-2026	16:25:42	GBp	140	630.00	XLON	xeaMUypF1MH
20-01-2026	16:25:42	GBp	31	630.00	XLON	xeaMUypF1MJ
20-01-2026	16:25:42	GBp	68	630.00	XLON	xeaMUypF1ML
20-01-2026	16:25:42	GBp	468	630.00	XLON	xeaMUypF1MF
20-01-2026	16:21:12	GBp	123	630.00	XLON	xeaMUypF8GK
20-01-2026	16:21:11	GBp	97	630.00	XLON	xeaMUypF8Jc
20-01-2026	16:20:53	GBp	866	630.00	XLON	xeaMUypF9uW
20-01-2026	16:20:53	GBp	43	630.00	XLON	xeaMUypF9uY
20-01-2026	16:18:45	GBp	782	630.50	XLON	xeaMUyp8qa@
20-01-2026	16:18:45	GBp	127	630.50	XLON	xeaMUyp8qa0
20-01-2026	16:14:40	GBp	376	630.50	XLON	xeaMUyp8nyj
20-01-2026	16:10:00	GBp	846	631.00	XLON	xeaMUyp8ubb
20-01-2026	16:10:00	GBp	63	631.00	XLON	xeaMUyp8ubd
20-01-2026	15:56:29	GBp	794	631.50	XLON	xeaMUyp8hAo
20-01-2026	15:56:29	GBp	218	631.50	XLON	xeaMUyp8hAq
20-01-2026	15:56:29	GBp	456	631.50	XLON	xeaMUyp8hAs
20-01-2026	15:56:29	GBp	182	631.50	XLON	xeaMUyp8hAu
20-01-2026	15:42:59	GBp	779	630.50	XLON	xeaMUyp8PSQ
20-01-2026	15:42:59	GBp	13	630.50	XLON	xeaMUyp8PSS
20-01-2026	15:42:59	GBp	39	630.50	XLON	xeaMUyp8PSU
20-01-2026	15:42:59	GBp	39	630.50	XLON	xeaMUyp8PVW
20-01-2026	15:42:59	GBp	26	630.50	XLON	xeaMUyp8PVY
20-01-2026	15:42:59	GBp	13	630.50	XLON	xeaMUyp8PVa
20-01-2026	15:26:27	GBp	484	630.00	XLON	xeaMUyp9y@s
20-01-2026	15:25:17	GBp	661	630.00	XLON	xeaMUyp9wn$
20-01-2026	15:25:17	GBp	562	630.50	XLON	xeaMUyp9wn3
20-01-2026	15:25:17	GBp	145	630.50	XLON	xeaMUyp9wnD
20-01-2026	15:25:17	GBp	528	630.50	XLON	xeaMUyp9wnE
20-01-2026	15:25:17	GBp	689	630.50	XLON	xeaMUyp9wnM
20-01-2026	15:25:17	GBp	10	630.50	XLON	xeaMUyp9wmr
20-01-2026	15:25:17	GBp	2	630.50	XLON	xeaMUyp9wmt
20-01-2026	15:25:17	GBp	36	630.50	XLON	xeaMUyp9wmv
20-01-2026	15:25:17	GBp	638	630.50	XLON	xeaMUyp9wmp
20-01-2026	15:25:17	GBp	680	630.50	XLON	xeaMUyp9wm0
20-01-2026	15:25:17	GBp	698	630.50	XLON	xeaMUyp9wm6
20-01-2026	15:25:17	GBp	581	630.50	XLON	xeaMUyp9wmN
20-01-2026	15:25:17	GBp	94	630.50	XLON	xeaMUyp9wmO
20-01-2026	15:25:17	GBp	184	630.50	XLON	xeaMUyp9wmQ
20-01-2026	15:20:44	GBp	446	630.00	XLON	xeaMUyp9Y5W
20-01-2026	15:20:44	GBp	52	630.00	XLON	xeaMUyp9YwS
20-01-2026	15:20:44	GBp	276	630.00	XLON	xeaMUyp9YwU
20-01-2026	15:20:44	GBp	46	629.50	BATE	xeaMUyp9Y5f
20-01-2026	15:20:44	GBp	316	629.50	BATE	xeaMUyp9Y5h
20-01-2026	15:20:44	GBp	909	629.50	XLON	xeaMUyp9Y5d
20-01-2026	15:20:15	GBp	85	629.50	BATE	xeaMUyp9ZoT
20-01-2026	15:20:00	GBp	884	630.00	XLON	xeaMUyp9ZT@
20-01-2026	15:20:00	GBp	25	630.00	XLON	xeaMUyp9ZT0
20-01-2026	15:20:00	GBp	456	630.00	BATE	xeaMUyp9ZT2
20-01-2026	15:19:01	GBp	86	630.00	XLON	xeaMUyp9Xn6
20-01-2026	15:13:27	GBp	444	630.50	XLON	xeaMUyp9fs@
20-01-2026	15:13:24	GBp	276	630.50	XLON	xeaMUyp9fy0
20-01-2026	15:13:02	GBp	107	630.50	XLON	xeaMUyp9fP7
20-01-2026	15:09:03	GBp	247	630.50	XLON	xeaMUyp9GcV
20-01-2026	14:54:26	GBp	814	630.50	XLON	xeaMUypAs@N
20-01-2026	14:54:26	GBp	528	630.50	XLON	xeaMUypAs@P
20-01-2026	14:54:26	GBp	1	630.50	XLON	xeaMUypAs@V
20-01-2026	14:54:09	GBp	1,061	631.50	XLON	xeaMUypAsIK
20-01-2026	14:54:09	GBp	145	631.50	XLON	xeaMUypAsIM
20-01-2026	14:54:09	GBp	236	631.50	XLON	xeaMUypAsIO
20-01-2026	14:54:09	GBp	201	631.50	XLON	xeaMUypAsIQ
20-01-2026	14:54:09	GBp	35	631.50	XLON	xeaMUypAsIS
20-01-2026	14:54:09	GBp	443	631.50	XLON	xeaMUypAsIU
20-01-2026	14:54:09	GBp	157	631.50	XLON	xeaMUypAsTv
20-01-2026	14:54:09	GBp	909	631.00	XLON	xeaMUypAsT1
20-01-2026	14:43:21	GBp	432	631.00	XLON	xeaMUypAaIW
20-01-2026	14:43:15	GBp	892	632.00	XLON	xeaMUypAbXa
20-01-2026	14:43:15	GBp	497	632.00	XLON	xeaMUypAbXc
20-01-2026	14:43:15	GBp	879	632.00	XLON	xeaMUypAbXm
20-01-2026	14:43:15	GBp	1,072	632.00	XLON	xeaMUypAbX9
20-01-2026	14:43:15	GBp	477	632.00	XLON	xeaMUypAbXL
20-01-2026	14:43:15	GBp	2,163	632.00	XLON	xeaMUypAbXV
20-01-2026	14:43:15	GBp	11	632.00	XLON	xeaMUypAbWb
20-01-2026	14:43:15	GBp	250	632.00	XLON	xeaMUypAbWX
20-01-2026	14:43:15	GBp	208	632.00	XLON	xeaMUypAbWZ
20-01-2026	14:43:02	GBp	118	631.50	XLON	xeaMUypAb1$
20-01-2026	14:43:02	GBp	791	631.50	XLON	xeaMUypAb11
20-01-2026	14:40:49	GBp	909	632.00	XLON	xeaMUypAXZm
20-01-2026	14:30:18	GBp	26	630.50	XLON	xeaMUypAT83
20-01-2026	14:10:50	GBp	161	629.50	BATE	xeaMUypBmYp
20-01-2026	14:10:13	GBp	115	629.50	XLON	xeaMUypBmGP
20-01-2026	14:10:13	GBp	159	629.50	XLON	xeaMUypBmGT
20-01-2026	14:10:13	GBp	235	629.50	XLON	xeaMUypBmGV
20-01-2026	14:10:13	GBp	237	629.50	XLON	xeaMUypBmJX
20-01-2026	14:10:13	GBp	600	629.50	XLON	xeaMUypBmJZ
20-01-2026	14:10:13	GBp	892	629.50	XLON	xeaMUypBmJc
20-01-2026	14:09:07	GBp	228	629.50	BATE	xeaMUypB@d3
20-01-2026	14:00:40	GBp	135	629.00	XLON	xeaMUypBcUn
20-01-2026	14:00:40	GBp	262	629.00	BATE	xeaMUypBcUr
20-01-2026	13:59:34	GBp	289	629.00	XLON	xeaMUypBaiK
20-01-2026	13:59:34	GBp	284	629.00	BATE	xeaMUypBaiT
20-01-2026	13:59:31	GBp	124	629.50	XLON	xeaMUypBak$
20-01-2026	13:59:31	GBp	118	629.50	XLON	xeaMUypBak1
20-01-2026	13:58:27	GBp	193	629.50	XLON	xeaMUypBbio
20-01-2026	13:57:23	GBp	23	629.50	XLON	xeaMUypBYlo
20-01-2026	13:57:23	GBp	156	629.50	XLON	xeaMUypBYlq
20-01-2026	13:56:19	GBp	247	629.50	XLON	xeaMUypBZZx
20-01-2026	13:56:19	GBp	11	629.50	XLON	xeaMUypBZZz
20-01-2026	13:46:56	GBp	1,284	628.50	XLON	xeaMUypBej1
20-01-2026	13:46:56	GBp	389	628.50	BATE	xeaMUypBej3
20-01-2026	13:34:01	GBp	169	629.00	XLON	xeaMUypBSCO
20-01-2026	13:33:53	GBp	281	629.50	XLON	xeaMUypBTaf
20-01-2026	13:33:40	GBp	118	630.00	BATE	xeaMUypBTwz
20-01-2026	13:33:40	GBp	644	630.00	XLON	xeaMUypBT7n
20-01-2026	13:33:40	GBp	186	630.00	BATE	xeaMUypBT7o
20-01-2026	13:33:40	GBp	1,427	630.00	XLON	xeaMUypBT0F
20-01-2026	13:33:40	GBp	467	630.00	BATE	xeaMUypBT0H
20-01-2026	13:33:23	GBp	229	630.50	XLON	xeaMUypBQbx
20-01-2026	13:32:19	GBp	219	630.50	XLON	xeaMUypBQQF
20-01-2026	13:31:15	GBp	245	630.50	XLON	xeaMUypBObB
20-01-2026	13:30:11	GBp	169	630.50	XLON	xeaMUypBOU@
20-01-2026	13:26:47	GBp	1	630.00	BATE	xeaMUypB7NJ
20-01-2026	13:21:40	GBp	1,741	630.50	XLON	xeaMUypB0zp
20-01-2026	13:21:39	GBp	154	630.50	XLON	xeaMUypB0y7
20-01-2026	13:19:04	GBp	219	630.50	XLON	xeaMUypBELk
20-01-2026	13:17:52	GBp	275	630.50	XLON	xeaMUypBFAD
20-01-2026	13:17:52	GBp	1	630.50	XLON	xeaMUypBFAF
20-01-2026	13:17:52	GBp	19	630.50	XLON	xeaMUypBFLb
20-01-2026	13:17:52	GBp	3,380	630.50	XLON	xeaMUypBFLX
20-01-2026	13:17:52	GBp	2,386	630.50	XLON	xeaMUypBFLZ
20-01-2026	13:10:59	GBp	800	630.00	XLON	xeaMUypB9RB
20-01-2026	13:10:59	GBp	572	630.00	BATE	xeaMUypB9RD
20-01-2026	12:58:12	GBp	65	630.50	XLON	xeaMUyp4wZ@
20-01-2026	12:58:12	GBp	625	630.50	XLON	xeaMUyp4wZu
20-01-2026	12:58:12	GBp	423	630.50	XLON	xeaMUyp4wZw
20-01-2026	12:58:12	GBp	24	630.50	XLON	xeaMUyp4wZy
20-01-2026	12:57:45	GBp	1,499	630.50	XLON	xeaMUyp4wvz
20-01-2026	12:57:45	GBp	190	630.50	XLON	xeaMUyp4wv$
20-01-2026	12:57:45	GBp	24	630.50	XLON	xeaMUyp4wv1
20-01-2026	12:57:45	GBp	65	630.50	XLON	xeaMUyp4wv5
20-01-2026	12:57:45	GBp	600	630.50	XLON	xeaMUyp4wv7
20-01-2026	12:57:45	GBp	375	630.50	XLON	xeaMUyp4wv9
20-01-2026	12:57:45	GBp	275	630.00	XLON	xeaMUyp4wvG
20-01-2026	12:57:45	GBp	387	630.00	BATE	xeaMUyp4wvK
20-01-2026	12:57:32	GBp	255	630.50	XLON	xeaMUyp4wBW
20-01-2026	12:49:59	GBp	34	629.50	XLON	xeaMUyp4b@C
20-01-2026	12:49:59	GBp	141	629.50	XLON	xeaMUyp4b@E
20-01-2026	12:49:59	GBp	47	629.50	XLON	xeaMUyp4b@G
20-01-2026	12:43:36	GBp	1	630.00	BATE	xeaMUyp4lb5
20-01-2026	12:43:36	GBp	11	630.00	BATE	xeaMUyp4lb6
20-01-2026	12:43:36	GBp	32	630.00	BATE	xeaMUyp4lb8
20-01-2026	12:43:36	GBp	96	630.00	BATE	xeaMUyp4lbA
20-01-2026	11:43:37	GBp	357	625.50	XLON	xeaMUyp5@VN
20-01-2026	11:41:01	GBp	438	626.00	XLON	xeaMUyp5zla
20-01-2026	11:37:49	GBp	561	626.50	XLON	xeaMUyp5x66
20-01-2026	11:37:49	GBp	1,336	627.00	XLON	xeaMUyp5x65
20-01-2026	11:31:14	GBp	559	627.00	XLON	xeaMUyp5aM4
20-01-2026	11:31:14	GBp	567	627.00	XLON	xeaMUyp5aML
20-01-2026	11:20:52	GBp	164	627.00	XLON	xeaMUyp5ieZ
20-01-2026	11:16:01	GBp	217	627.50	XLON	xeaMUyp5ea1
20-01-2026	11:03:23	GBp	542	627.50	XLON	xeaMUyp5HDa
20-01-2026	10:56:18	GBp	300	628.00	XLON	xeaMUyp5Q5I
20-01-2026	10:56:18	GBp	616	628.00	XLON	xeaMUyp5Q5T
20-01-2026	10:54:04	GBp	247	628.50	XLON	xeaMUyp5OY@
20-01-2026	10:54:04	GBp	65	628.50	XLON	xeaMUyp5OY0
20-01-2026	10:51:07	GBp	236	628.50	XLON	xeaMUyp56nf
20-01-2026	10:51:07	GBp	45	628.50	XLON	xeaMUyp56nh
20-01-2026	10:48:10	GBp	75	628.50	XLON	xeaMUyp549X
20-01-2026	10:48:10	GBp	214	628.50	XLON	xeaMUyp549Z
20-01-2026	10:46:12	GBp	145	628.50	XLON	xeaMUyp52uB
20-01-2026	10:44:00	GBp	385	628.50	XLON	xeaMUyp50wn
20-01-2026	10:44:00	GBp	381	628.50	XLON	xeaMUyp50w$
20-01-2026	10:44:00	GBp	16	628.50	XLON	xeaMUyp50wS
20-01-2026	10:44:00	GBp	369	628.50	XLON	xeaMUyp505X
20-01-2026	10:44:00	GBp	7	628.50	XLON	xeaMUyp505Z
20-01-2026	10:44:00	GBp	390	628.50	XLON	xeaMUyp5058
20-01-2026	10:38:09	GBp	404	628.00	XLON	xeaMUyp5CPH
20-01-2026	10:38:06	GBp	388	628.00	XLON	xeaMUyp5CQw
20-01-2026	10:31:49	GBp	6	628.00	XLON	xeaMUyp6s7M
20-01-2026	10:24:12	GBp	154	628.50	XLON	xeaMUyp6nmf
20-01-2026	10:22:03	GBp	507	628.50	XLON	xeaMUyp6$d8
20-01-2026	10:22:03	GBp	187	628.50	XLON	xeaMUyp6$dA
20-01-2026	10:22:03	GBp	61	628.50	XLON	xeaMUyp6$dC
20-01-2026	10:22:03	GBp	19	628.50	XLON	xeaMUyp6$dE
20-01-2026	10:22:03	GBp	397	628.00	XLON	xeaMUyp6$cf
20-01-2026	10:20:17	GBp	385	628.50	XLON	xeaMUyp6ytg
20-01-2026	10:13:38	GBp	138	629.00	XLON	xeaMUyp6vQV
20-01-2026	10:13:38	GBp	262	629.00	XLON	xeaMUyp6cbX
20-01-2026	10:13:38	GBp	144	629.00	XLON	xeaMUyp6cbZ
20-01-2026	10:13:38	GBp	606	629.00	XLON	xeaMUyp6cbm
20-01-2026	09:46:30	GBp	446	628.00	XLON	xeaMUyp6Ha3
20-01-2026	09:45:08	GBp	452	629.00	XLON	xeaMUyp6UZK
20-01-2026	09:45:08	GBp	88	629.00	XLON	xeaMUyp6UZM
20-01-2026	09:45:08	GBp	250	629.00	XLON	xeaMUyp6UZO
20-01-2026	09:45:08	GBp	55	629.00	XLON	xeaMUyp6UZQ
20-01-2026	09:45:08	GBp	239	629.00	XLON	xeaMUyp6UYd
20-01-2026	09:45:08	GBp	365	628.50	XLON	xeaMUyp6UYj
20-01-2026	09:44:02	GBp	365	629.00	XLON	xeaMUyp6VXs
20-01-2026	09:33:44	GBp	365	628.00	XLON	xeaMUyp67IA
20-01-2026	09:29:04	GBp	9	628.50	XLON	xeaMUyp63Fa
20-01-2026	09:29:04	GBp	356	628.50	XLON	xeaMUyp63FY
20-01-2026	09:17:40	GBp	498	628.00	XLON	xeaMUyp69ge
20-01-2026	09:11:14	GBp	310	628.00	XLON	xeaMUyp7oMl
20-01-2026	09:11:13	GBp	75	628.50	XLON	xeaMUyp7oM$
20-01-2026	09:11:13	GBp	260	628.50	XLON	xeaMUyp7oM1
20-01-2026	09:11:13	GBp	483	629.00	XLON	xeaMUyp7oM5
20-01-2026	09:05:51	GBp	318	628.50	XLON	xeaMUyp7$2@
20-01-2026	09:05:50	GBp	250	629.50	XLON	xeaMUyp7$Cb
20-01-2026	09:05:50	GBp	207	629.50	XLON	xeaMUyp7$Cd
20-01-2026	09:05:50	GBp	4,444	629.50	XLON	xeaMUyp7$CZ
20-01-2026	09:05:50	GBp	365	629.00	XLON	xeaMUyp7$Cl
20-01-2026	09:04:37	GBp	365	629.50	XLON	xeaMUyp7y8S
20-01-2026	08:58:26	GBp	365	630.00	XLON	xeaMUyp7cBr
20-01-2026	08:38:15	GBp	365	630.50	XLON	xeaMUyp7LOL
20-01-2026	08:31:08	GBp	365	631.00	XLON	xeaMUyp7Snb
20-01-2026	08:29:05	GBp	365	631.50	XLON	xeaMUyp7QkM
20-01-2026	08:19:44	GBp	80	631.00	XLON	xeaMUyp72bS
20-01-2026	08:19:37	GBp	173	631.00	XLON	xeaMUyp72ZV
20-01-2026	08:19:16	GBp	365	631.50	XLON	xeaMUyp72u5
20-01-2026	08:15:10	GBp	365	632.00	XLON	xeaMUyp71UY
20-01-2026	08:05:16	GBp	365	632.00	XLON	xeaMUyp791n
20-01-2026	08:01:05	GBp	288	632.50	XLON	xeaMUyp0rRv
20-01-2026	08:01:00	GBp	240	633.00	XLON	xeaMUyp0oZw