⌘K

t

Transaction in Own Shares - Costain Group PLC | RNS | Ticker

/Equities/XLON/COST/RNS

Transaction in Own Shares

RNS Number : 4928T

Costain Group PLC

01 August 2025

1^st August 2025

Costain Group PLC

Transaction in own shares

Costain Group PLC ("Costain", "the Group" or "the Company") announces that, in accordance with the terms of its share buyback programme (the "Buyback Programme") announced on 16^th June 2025, it has purchased the following number of its ordinary shares of 1 pence each ("Ordinary Shares") on the London Stock Exchange through Panmure Liberum.

Date of Purchase	31^st July 2025
Number of Ordinary Shares purchased	289,428
Weighted average price per day (pence)	164.39
Highest price per share (pence)	166.40
Lowest price per share (pence)	162.40

The purchased Ordinary Shares will be cancelled. The Company does not hold any Ordinary Shares in treasury.

Costain has now purchased 4,538,768 Ordinary Shares in aggregate for cancellation under the Buyback Programme. Following settlement of the above purchases and cancellation of the purchased Ordinary Shares, the Group's total number of Ordinary Shares in issue will be 268,459,707 Ordinary Shares.

Details of Trades:

Aggregate information

Venue	Volume-weighted average price (p)	Aggregated volume	Lowest price per share (p)	Highest price per share (p)
XLON	164.38	190,896	162.40	166.40
BATE	164.40	74,561	162.40	166.40
CHIX	164.32	20,149	162.40	166.40
TRQX	164.71	3,822	164.20	166.20

Individual Transactions

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 as it applies in the UK (the Market Abuse Regulation), the table below contains detailed information of the individual trades made by Panmure Liberum on behalf of Costain as part of the Buyback Programme.

Time of transaction	Number of shares purchased	Transaction price (pence per share)	Venue	Transaction reference no.
08:09:28	787	163.00	XLON	00041290349TRLO0
08:09:28	604	163.00	XLON	00041290348TRLO0
08:09:28	680	163.00	XLON	00041290347TRLO0
08:09:28	106	163.00	XLON	00041290346TRLO0
08:09:28	55	163.00	XLON	00041290345TRLO0
08:09:28	972	163.00	XLON	00041290344TRLO0
08:09:28	106	163.00	XLON	00041290343TRLO0
08:09:28	795	163.00	XLON	00041290342TRLO0
08:09:28	106	163.00	XLON	00041290341TRLO0
08:09:28	518	163.00	XLON	00041290340TRLO0
08:09:28	1058	163.00	XLON	00041290339TRLO0
08:09:28	1217	163.00	XLON	00041290338TRLO0
08:09:28	167	163.00	XLON	00041290337TRLO0
08:10:38	624	163.00	XLON	00041290415TRLO0
08:11:36	941	163.00	XLON	00041290462TRLO0
08:11:36	71	163.00	XLON	00041290461TRLO0
08:12:27	1136	162.80	BATE	00041290516TRLO0
08:12:27	823	162.80	BATE	00041290515TRLO0
08:12:27	1132	162.80	BATE	00041290514TRLO0
08:12:27	823	162.80	BATE	00041290513TRLO0
08:12:27	1784	162.80	XLON	00041290512TRLO0
08:12:36	1763	162.60	XLON	00041290533TRLO0
08:12:36	987	162.60	BATE	00041290532TRLO0
08:13:36	619	162.40	XLON	00041290617TRLO0
08:13:36	1149	162.40	BATE	00041290616TRLO0
08:13:36	1268	162.40	CHIX	00041290615TRLO0
08:24:35	720	162.60	XLON	00041291182TRLO0
08:24:35	698	162.60	XLON	00041291181TRLO0
08:25:43	1955	162.40	XLON	00041291233TRLO0
08:25:43	1389	162.40	CHIX	00041291232TRLO0
08:25:43	902	162.40	BATE	00041291231TRLO0
08:29:00	672	162.80	XLON	00041291331TRLO0
08:29:00	896	162.80	BATE	00041291330TRLO0
08:29:51	1653	162.60	XLON	00041291372TRLO0
08:29:51	999	162.60	BATE	00041291371TRLO0
08:34:48	39	163.00	XLON	00041291657TRLO0
08:34:48	835	163.00	XLON	00041291656TRLO0
08:36:44	553	163.00	XLON	00041291725TRLO0
08:37:02	677	163.00	XLON	00041291734TRLO0
08:37:02	835	163.00	XLON	00041291733TRLO0
08:37:02	184	163.00	XLON	00041291732TRLO0
08:38:40	867	163.00	BATE	00041291805TRLO0
08:40:05	1349	162.80	XLON	00041291858TRLO0
08:40:05	1179	162.80	BATE	00041291857TRLO0
08:46:24	771	163.00	XLON	00041292022TRLO0
08:46:45	924	163.00	BATE	00041292038TRLO0
08:48:20	690	163.20	XLON	00041292113TRLO0
08:49:18	2004	163.00	XLON	00041292124TRLO0
08:52:41	1287	163.40	XLON	00041292230TRLO0
08:56:04	1339	164.00	XLON	00041292369TRLO0
08:56:04	1270	163.80	BATE	00041292367TRLO0
08:56:04	1109	163.80	CHIX	00041292366TRLO0
08:56:04	1339	163.80	XLON	00041292368TRLO0
09:00:09	866	163.40	BATE	00041292508TRLO0
09:00:09	667	163.60	XLON	00041292507TRLO0
09:00:09	1236	163.60	BATE	00041292506TRLO0
09:14:26	726	164.60	BATE	00041292916TRLO0
09:15:58	1387	164.00	XLON	00041292986TRLO0
09:15:58	1063	163.80	XLON	00041292985TRLO0
09:15:58	988	163.80	BATE	00041292984TRLO0
09:15:58	1067	164.00	XLON	00041292983TRLO0
09:15:58	1227	164.00	BATE	00041292982TRLO0
09:27:13	1060	164.00	XLON	00041293267TRLO0
09:27:13	949	164.00	CHIX	00041293266TRLO0
09:27:13	1040	164.00	BATE	00041293265TRLO0
09:27:40	516	164.20	XLON	00041293277TRLO0
09:27:40	324	164.20	XLON	00041293276TRLO0
09:56:39	403	164.60	XLON	00041294052TRLO0
09:56:39	529	164.60	XLON	00041294053TRLO0
09:56:39	1345	164.60	XLON	00041294051TRLO0
09:56:39	98	164.40	XLON	00041294050TRLO0
09:56:39	1283	164.40	XLON	00041294049TRLO0
09:56:39	889	164.40	CHIX	00041294048TRLO0
09:56:39	1127	164.40	BATE	00041294047TRLO0
10:06:54	2474	164.40	BATE	00041294460TRLO0
10:06:54	1052	164.20	BATE	00041294457TRLO0
10:06:54	539	164.20	TRQX	00041294459TRLO0
10:06:54	4562	164.20	XLON	00041294458TRLO0
10:06:54	1203	164.60	XLON	00041294456TRLO0
10:06:54	772	164.40	TRQX	00041294455TRLO0
10:06:54	527	164.60	XLON	00041294453TRLO0
10:06:54	278	164.80	XLON	00041294454TRLO0
10:06:54	255	164.60	XLON	00041294452TRLO0
10:06:54	1645	164.80	XLON	00041294451TRLO0
10:06:54	279	164.80	XLON	00041294450TRLO0
10:06:54	953	164.80	XLON	00041294449TRLO0
10:06:54	47	164.80	XLON	00041294448TRLO0
10:06:54	1022	164.80	XLON	00041294447TRLO0
10:06:54	1401	164.40	XLON	00041294446TRLO0
10:06:54	1048	164.40	BATE	00041294445TRLO0
10:06:55	817	164.00	XLON	00041294462TRLO0
10:06:55	1052	164.00	BATE	00041294461TRLO0
10:32:08	938	164.40	BATE	00041295221TRLO0
10:32:08	1705	164.20	XLON	00041295220TRLO0
10:32:08	1111	164.20	BATE	00041295219TRLO0
10:32:08	29	164.80	XLON	00041295218TRLO0
10:32:08	1267	164.80	XLON	00041295217TRLO0
10:32:08	422	164.80	XLON	00041295216TRLO0
10:32:08	1273	164.80	XLON	00041295215TRLO0
10:32:08	1000	164.80	XLON	00041295214TRLO0
10:32:08	1644	164.40	XLON	00041295213TRLO0
10:32:08	1052	164.40	CHIX	00041295211TRLO0
10:32:08	813	164.40	BATE	00041295212TRLO0
10:32:11	780	164.00	BATE	00041295223TRLO0
10:32:11	1108	164.00	XLON	00041295222TRLO0
10:41:07	1000	164.20	XLON	00041295521TRLO0
10:45:30	818	164.20	BATE	00041295600TRLO0
10:47:14	410	164.20	TRQX	00041295631TRLO0
10:52:09	678	164.40	XLON	00041295729TRLO0
10:52:09	947	164.40	BATE	00041295728TRLO0
10:52:09	1125	164.60	XLON	00041295727TRLO0
10:52:09	996	164.60	BATE	00041295726TRLO0
10:52:09	2564	164.80	XLON	00041295725TRLO0
10:53:43	545	164.20	XLON	00041295770TRLO0
10:53:43	577	164.20	BATE	00041295769TRLO0
10:58:46	812	164.00	XLON	00041295873TRLO0
10:58:46	666	164.00	BATE	00041295872TRLO0
11:00:53	792	163.80	XLON	00041295980TRLO0
11:07:04	1306	163.80	XLON	00041296164TRLO0
11:07:29	916	163.60	XLON	00041296172TRLO0
11:07:29	1192	163.80	BATE	00041296171TRLO0
11:07:29	177	163.80	CHIX	00041296170TRLO0
11:07:29	836	163.80	CHIX	00041296169TRLO0
11:11:23	947	163.60	XLON	00041296286TRLO0
11:17:36	727	164.00	XLON	00041296454TRLO0
11:21:35	1380	163.80	XLON	00041296544TRLO0
11:21:35	1087	163.80	BATE	00041296543TRLO0
11:26:28	944	164.00	XLON	00041296694TRLO0
11:32:40	850	164.00	XLON	00041296901TRLO0
11:32:40	715	164.00	BATE	00041296900TRLO0
11:35:40	872	164.00	XLON	00041296987TRLO0
11:35:49	47	164.00	BATE	00041296995TRLO0
11:37:06	825	164.00	XLON	00041297051TRLO0
11:38:32	959	164.00	XLON	00041297109TRLO0
11:38:49	471	164.00	BATE	00041297181TRLO0
11:38:49	791	164.00	BATE	00041297180TRLO0
11:38:50	732	164.00	BATE	00041297182TRLO0
11:40:40	1047	164.00	XLON	00041297217TRLO0
11:44:24	898	164.20	CHIX	00041297298TRLO0
11:44:29	915	164.00	XLON	00041297299TRLO0
11:44:37	32	164.00	XLON	00041297317TRLO0
12:02:01	952	165.20	XLON	00041297740TRLO0
12:02:02	1185	165.00	XLON	00041297743TRLO0
12:02:02	893	165.00	BATE	00041297742TRLO0
12:02:02	327	165.00	BATE	00041297741TRLO0
12:07:40	2056	165.00	XLON	00041297930TRLO0
12:07:40	699	165.00	XLON	00041297929TRLO0
12:10:22	974	165.20	XLON	00041297975TRLO0
12:13:36	702	165.40	BATE	00041298056TRLO0
12:13:36	102	165.40	BATE	00041298055TRLO0
12:15:33	568	165.60	BATE	00041298200TRLO0
12:17:09	462	165.40	TRQX	00041298278TRLO0
12:17:09	1993	165.40	XLON	00041298277TRLO0
12:17:09	1565	165.40	BATE	00041298276TRLO0
12:17:10	7	165.20	BATE	00041298282TRLO0
12:17:10	932	165.20	XLON	00041298281TRLO0
12:17:10	40	165.20	BATE	00041298280TRLO0
12:17:10	601	165.20	BATE	00041298279TRLO0
12:17:14	648	165.00	XLON	00041298284TRLO0
12:17:14	561	165.20	BATE	00041298283TRLO0
12:24:52	1296	165.00	XLON	00041298657TRLO0
12:24:52	929	165.00	BATE	00041298656TRLO0
12:24:52	941	165.00	CHIX	00041298655TRLO0
12:25:02	882	164.80	XLON	00041298658TRLO0
12:25:52	34	164.60	XLON	00041298681TRLO0
12:33:16	1560	164.40	XLON	00041299015TRLO0
12:33:16	905	164.40	BATE	00041299014TRLO0
12:58:07	1307	164.60	BATE	00041299737TRLO0
12:59:35	2197	164.60	XLON	00041299774TRLO0
12:59:35	758	164.80	XLON	00041299773TRLO0
12:59:35	1165	164.60	BATE	00041299772TRLO0
12:59:35	1014	164.80	CHIX	00041299771TRLO0
12:59:35	758	164.80	BATE	00041299770TRLO0
13:08:55	2483	165.00	XLON	00041300024TRLO0
13:08:55	1469	165.00	BATE	00041300023TRLO0
13:15:24	3137	165.00	XLON	00041300219TRLO0
13:15:24	1272	165.00	BATE	00041300218TRLO0
13:16:01	3341	164.80	XLON	00041300245TRLO0
13:16:01	351	164.80	TRQX	00041300244TRLO0
13:16:01	894	164.80	BATE	00041300243TRLO0
13:20:24	888	164.40	XLON	00041300322TRLO0
13:20:24	1850	164.60	XLON	00041300321TRLO0
13:20:24	710	164.20	XLON	00041300320TRLO0
13:20:24	561	164.60	BATE	00041300319TRLO0
13:29:59	982	164.40	XLON	00041300598TRLO0
13:29:59	2240	164.60	XLON	00041300597TRLO0
13:29:59	781	164.40	BATE	00041300596TRLO0
13:29:59	1114	164.60	BATE	00041300595TRLO0
13:44:06	1091	166.20	BATE	00041300904TRLO0
13:46:48	2153	166.40	XLON	00041300956TRLO0
13:46:48	2832	166.40	XLON	00041300955TRLO0
13:46:48	779	166.40	CHIX	00041300954TRLO0
13:46:48	1826	166.40	BATE	00041300953TRLO0
13:46:48	618	166.40	CHIX	00041300952TRLO0
13:46:51	955	166.20	XLON	00041300959TRLO0
13:46:51	1232	166.20	XLON	00041300958TRLO0
13:46:51	1283	166.20	BATE	00041300957TRLO0
13:47:32	1319	166.00	XLON	00041300974TRLO0
13:52:44	838	166.00	XLON	00041301171TRLO0
13:52:44	838	166.00	BATE	00041301170TRLO0
14:00:46	424	166.20	TRQX	00041301530TRLO0
14:01:16	203	166.20	CHIX	00041301543TRLO0
14:01:54	811	166.40	XLON	00041301550TRLO0
14:09:17	818	166.20	BATE	00041302056TRLO0
14:09:17	299	166.40	XLON	00041302055TRLO0
14:09:17	66	166.40	XLON	00041302054TRLO0
14:09:17	343	166.40	XLON	00041302053TRLO0
14:09:17	695	166.40	XLON	00041302052TRLO0
14:09:17	4678	166.20	XLON	00041302051TRLO0
14:09:17	2198	166.20	BATE	00041302050TRLO0
14:09:17	1063	166.20	CHIX	00041302049TRLO0
14:19:00	1174	166.00	BATE	00041302403TRLO0
14:19:00	1816	166.00	XLON	00041302402TRLO0
14:19:00	3935	166.00	XLON	00041302401TRLO0
14:19:00	1770	166.00	BATE	00041302400TRLO0
14:58:29	4647	164.40	XLON	00041304727TRLO0
14:58:29	443	164.20	XLON	00041304726TRLO0
14:58:29	165	164.40	TRQX	00041304725TRLO0
14:58:29	4579	164.40	BATE	00041304724TRLO0
16:14:02	1844	164.40	XLON	00041309974TRLO0
16:14:02	699	164.40	TRQX	00041309973TRLO0
16:14:02	3417	164.40	CHIX	00041309971TRLO0
16:14:02	2266	164.40	BATE	00041309970TRLO0
16:14:02	1543	164.40	XLON	00041309972TRLO0
16:14:04	542	164.20	CHIX	00041309978TRLO0
16:14:04	994	164.20	BATE	00041309977TRLO0
16:14:04	618	164.20	CHIX	00041309976TRLO0
16:14:04	1200	164.20	XLON	00041309979TRLO0
16:14:08	841	164.00	XLON	00041309983TRLO0
16:14:08	599	164.00	BATE	00041309982TRLO0
16:14:10	1279	163.80	XLON	00041309984TRLO0
16:15:35	882	164.20	CHIX	00041310067TRLO0
16:16:20	687	164.20	CHIX	00041310167TRLO0
16:16:20	34	164.20	CHIX	00041310166TRLO0
16:16:25	836	164.20	XLON	00041310172TRLO0
16:16:25	811	164.20	XLON	00041310171TRLO0
16:17:05	784	164.40	CHIX	00041310219TRLO0
16:17:19	2241	164.00	XLON	00041310229TRLO0
16:19:30	394	164.40	XLON	00041310542TRLO0
16:19:30	498	164.20	XLON	00041310540TRLO0
16:19:30	111	164.20	XLON	00041310539TRLO0
16:19:30	4369	164.40	XLON	00041310541TRLO0
16:19:30	93	164.20	XLON	00041310538TRLO0
16:19:30	559	164.20	XLON	00041310537TRLO0
16:19:30	559	164.20	XLON	00041310536TRLO0
16:19:30	503	164.20	XLON	00041310535TRLO0
16:19:30	114	164.00	XLON	00041310534TRLO0
16:19:30	1255	164.40	XLON	00041310533TRLO0
16:19:30	1411	164.40	XLON	00041310532TRLO0
16:19:30	758	164.20	XLON	00041310531TRLO0
16:19:30	2037	164.20	XLON	00041310530TRLO0
16:19:30	1511	164.20	XLON	00041310529TRLO0
16:19:30	114	164.00	XLON	00041310528TRLO0
16:19:30	5160	164.40	XLON	00041310526TRLO0
16:19:30	1319	164.40	XLON	00041310525TRLO0
16:19:30	440	164.40	XLON	00041310524TRLO0
16:19:30	53	164.40	XLON	00041310523TRLO0
16:19:30	5571	164.40	XLON	00041310522TRLO0
16:19:30	697	164.40	XLON	00041310521TRLO0
16:19:30	704	164.40	XLON	00041310520TRLO0
16:19:31	194	164.20	XLON	00041310557TRLO0
16:19:31	299	164.20	XLON	00041310556TRLO0
16:19:31	164	164.20	XLON	00041310555TRLO0
16:19:31	1634	164.20	XLON	00041310554TRLO0
16:19:31	1652	164.20	XLON	00041310553TRLO0
16:19:31	379	164.20	XLON	00041310552TRLO0
16:19:31	236	164.20	XLON	00041310551TRLO0
16:19:31	197	164.20	XLON	00041310550TRLO0
16:19:31	1064	164.20	XLON	00041310547TRLO0
16:19:31	498	164.20	XLON	00041310546TRLO0
16:19:31	1183	164.20	XLON	00041310549TRLO0
16:19:31	1518	164.20	XLON	00041310548TRLO0
16:19:31	1037	164.20	XLON	00041310545TRLO0
16:19:31	729	164.20	XLON	00041310544TRLO0
16:19:31	1440	164.20	XLON	00041310543TRLO0

Enquiries:

Investors and analysts

Matt Jones, Costain

Matt.Jones@costain.com

+44 (0) 7860 922 341

Financial media - Headland

Andy Rivett-Carnac

Charlie Twigg

costain@headlandconsultancy.com

+44 (0) 7968 997365

+44 (0) 7946 494568

Issuer name: Costain Group PLC

LEI: 213800PKIJBZ2EDTKC88

ISIN: GB00B64NSP76

Classification: 2.4. Acquisition or disposal of the issuer's own shares

Intermediary name: Panmure Liberum

Intermediary Code: PMURGB2LXXX

Timezone: BST

Currency: GBp

This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.

RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.

END

POSPKDBNABKDDON

TIDM	COST
Share Price	Loading...
Market Cap	Loading...

Date	1 Aug 2025
Time	07:00:05
Category	Capital structure
ID	4928T

TIDM	COST
Share Price	Loading...
Market Cap	Loading...

Date	1 Aug 2025
Time	07:00:05
Category	Capital structure
ID	4928T

t

t

Company Information

AI Summary

RNS Metadata

Transaction in Own Shares

Company Information

AI Summary

RNS Metadata