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Last checked at 
7 Aug 2025 07:00
7th 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 16th 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 | 6th August 2025 |
Number of Ordinary Shares purchased | 154,884 |
Weighted average price per day (pence) | 166.90 |
Highest price per share (pence) | 167.80 |
Lowest price per share (pence) | 165.80 |
The purchased Ordinary Shares will be cancelled. The Company does not hold any Ordinary Shares in treasury.
Costain has now purchased 5,147,034 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 267,851,441 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 | 166.91 | 98,235 | 165.80 | 167.80 |
BATE | 166.85 | 45,490 | 166.00 | 167.80 |
CHIX | 166.93 | 9,434 | 166.40 | 167.80 |
TRQX | 166.97 | 1,725 | 166.20 | 167.60 |
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. |
08:02:32 | 60 | 166.00 | XLON | 00041368327TRLO0 |
08:02:32 | 587 | 166.00 | XLON | 00041368326TRLO0 |
08:02:33 | 854 | 165.80 | XLON | 00041368329TRLO0 |
08:02:33 | 569 | 166.00 | XLON | 00041368328TRLO0 |
08:10:12 | 40 | 166.80 | CHIX | 00041369054TRLO0 |
08:35:00 | 1595 | 167.00 | CHIX | 00041370017TRLO0 |
08:35:00 | 897 | 167.20 | XLON | 00041370016TRLO0 |
08:35:00 | 897 | 167.20 | BATE | 00041370015TRLO0 |
08:39:45 | 897 | 166.80 | XLON | 00041370308TRLO0 |
08:39:45 | 897 | 166.80 | BATE | 00041370307TRLO0 |
08:39:46 | 621 | 167.20 | XLON | 00041370313TRLO0 |
08:39:46 | 3465 | 167.20 | XLON | 00041370315TRLO0 |
08:39:46 | 1472 | 167.20 | XLON | 00041370314TRLO0 |
08:39:46 | 939 | 167.20 | BATE | 00041370312TRLO0 |
08:39:46 | 710 | 167.00 | BATE | 00041370309TRLO0 |
08:39:46 | 1207 | 167.20 | BATE | 00041370311TRLO0 |
08:39:46 | 489 | 167.20 | BATE | 00041370310TRLO0 |
08:45:00 | 1197 | 167.00 | XLON | 00041370558TRLO0 |
08:52:43 | 1007 | 167.00 | BATE | 00041370825TRLO0 |
09:00:51 | 1174 | 167.00 | XLON | 00041371205TRLO0 |
09:00:51 | 1000 | 167.00 | XLON | 00041371203TRLO0 |
09:00:51 | 770 | 167.00 | XLON | 00041371204TRLO0 |
09:00:51 | 127 | 167.00 | XLON | 00041371202TRLO0 |
09:00:51 | 897 | 166.80 | XLON | 00041371201TRLO0 |
09:00:51 | 195 | 166.80 | BATE | 00041371200TRLO0 |
09:00:51 | 1350 | 166.80 | BATE | 00041371199TRLO0 |
09:14:26 | 746 | 167.00 | XLON | 00041371687TRLO0 |
09:14:26 | 146 | 167.00 | XLON | 00041371688TRLO0 |
09:20:14 | 823 | 167.00 | XLON | 00041371879TRLO0 |
09:26:32 | 123 | 167.00 | BATE | 00041372116TRLO0 |
09:26:32 | 57 | 167.00 | XLON | 00041372115TRLO0 |
09:26:37 | 591 | 167.00 | CHIX | 00041372119TRLO0 |
09:27:22 | 1076 | 167.00 | BATE | 00041372153TRLO0 |
09:31:46 | 897 | 167.00 | XLON | 00041372342TRLO0 |
09:31:46 | 1072 | 167.00 | BATE | 00041372341TRLO0 |
09:47:03 | 897 | 167.00 | XLON | 00041372884TRLO0 |
09:47:18 | 353 | 167.00 | BATE | 00041372893TRLO0 |
09:49:58 | 48 | 167.00 | BATE | 00041372967TRLO0 |
09:50:17 | 1613 | 167.20 | XLON | 00041372976TRLO0 |
09:50:17 | 243 | 167.20 | XLON | 00041372975TRLO0 |
09:50:17 | 677 | 167.20 | XLON | 00041372973TRLO0 |
09:50:17 | 1 | 167.20 | XLON | 00041372974TRLO0 |
10:06:06 | 3316 | 167.60 | XLON | 00041373481TRLO0 |
10:09:50 | 1515 | 167.80 | XLON | 00041373580TRLO0 |
10:28:52 | 1185 | 167.80 | CHIX | 00041374215TRLO0 |
10:28:52 | 1174 | 167.80 | BATE | 00041374214TRLO0 |
10:28:58 | 1482 | 167.60 | XLON | 00041374219TRLO0 |
10:30:52 | 443 | 167.60 | TRQX | 00041374263TRLO0 |
10:30:52 | 1258 | 167.60 | BATE | 00041374261TRLO0 |
10:30:52 | 1305 | 167.60 | XLON | 00041374262TRLO0 |
10:30:53 | 392 | 167.40 | BATE | 00041374265TRLO0 |
10:32:44 | 127 | 167.40 | TRQX | 00041374338TRLO0 |
10:32:44 | 734 | 167.40 | BATE | 00041374337TRLO0 |
10:48:01 | 299 | 167.00 | BATE | 00041374721TRLO0 |
10:53:47 | 588 | 167.00 | BATE | 00041374834TRLO0 |
10:55:59 | 911 | 167.20 | XLON | 00041374904TRLO0 |
10:57:54 | 1262 | 167.00 | XLON | 00041374985TRLO0 |
11:08:46 | 577 | 166.80 | BATE | 00041375202TRLO0 |
11:13:22 | 745 | 167.20 | XLON | 00041375282TRLO0 |
11:18:50 | 136 | 167.00 | TRQX | 00041375373TRLO0 |
11:18:50 | 1061 | 167.00 | BATE | 00041375370TRLO0 |
11:18:50 | 802 | 167.00 | XLON | 00041375372TRLO0 |
11:18:50 | 992 | 167.00 | XLON | 00041375371TRLO0 |
11:34:36 | 738 | 167.20 | XLON | 00041375727TRLO0 |
11:36:10 | 1335 | 167.20 | XLON | 00041375773TRLO0 |
11:36:10 | 1038 | 167.20 | BATE | 00041375772TRLO0 |
11:36:10 | 89 | 167.20 | XLON | 00041375771TRLO0 |
11:47:32 | 1432 | 167.00 | XLON | 00041376078TRLO0 |
11:47:32 | 63 | 167.00 | XLON | 00041376077TRLO0 |
11:47:32 | 930 | 167.00 | CHIX | 00041376076TRLO0 |
12:04:34 | 273 | 167.20 | XLON | 00041376515TRLO0 |
12:04:34 | 591 | 167.20 | XLON | 00041376514TRLO0 |
12:04:47 | 791 | 167.00 | XLON | 00041376517TRLO0 |
12:16:12 | 103 | 167.00 | TRQX | 00041376768TRLO0 |
12:16:12 | 1424 | 167.00 | XLON | 00041376767TRLO0 |
12:16:12 | 1296 | 167.00 | BATE | 00041376766TRLO0 |
12:16:18 | 934 | 167.00 | BATE | 00041376772TRLO0 |
12:17:18 | 1369 | 167.00 | XLON | 00041376808TRLO0 |
12:41:56 | 269 | 166.60 | BATE | 00041377357TRLO0 |
12:47:44 | 998 | 166.80 | XLON | 00041377494TRLO0 |
12:59:14 | 545 | 166.60 | BATE | 00041377742TRLO0 |
12:59:18 | 227 | 166.60 | BATE | 00041377743TRLO0 |
13:18:07 | 537 | 166.60 | CHIX | 00041378290TRLO0 |
13:31:06 | 531 | 166.60 | BATE | 00041378591TRLO0 |
13:31:40 | 263 | 166.60 | BATE | 00041378600TRLO0 |
13:40:36 | 221 | 166.60 | BATE | 00041378869TRLO0 |
13:58:15 | 1220 | 166.80 | XLON | 00041379445TRLO0 |
13:58:15 | 90 | 166.80 | TRQX | 00041379444TRLO0 |
13:58:15 | 1041 | 166.80 | BATE | 00041379443TRLO0 |
13:58:15 | 534 | 166.80 | BATE | 00041379442TRLO0 |
13:58:15 | 897 | 166.80 | BATE | 00041379441TRLO0 |
13:58:15 | 1183 | 166.80 | XLON | 00041379440TRLO0 |
13:58:15 | 1093 | 166.80 | XLON | 00041379439TRLO0 |
13:58:16 | 1540 | 166.80 | XLON | 00041379446TRLO0 |
14:05:05 | 512 | 167.40 | XLON | 00041379621TRLO0 |
14:05:05 | 316 | 167.40 | XLON | 00041379620TRLO0 |
14:05:05 | 158 | 167.40 | XLON | 00041379619TRLO0 |
14:14:04 | 1103 | 167.20 | CHIX | 00041379852TRLO0 |
14:14:04 | 1287 | 167.40 | XLON | 00041379851TRLO0 |
14:14:04 | 660 | 167.40 | XLON | 00041379850TRLO0 |
14:19:54 | 12 | 167.20 | XLON | 00041380017TRLO0 |
14:19:54 | 835 | 167.20 | XLON | 00041380016TRLO0 |
14:19:54 | 1000 | 167.00 | XLON | 00041380015TRLO0 |
14:19:54 | 189 | 167.00 | TRQX | 00041380014TRLO0 |
14:19:54 | 1068 | 167.00 | BATE | 00041380013TRLO0 |
14:19:55 | 1933 | 167.20 | XLON | 00041380021TRLO0 |
14:19:55 | 681 | 167.20 | XLON | 00041380020TRLO0 |
14:19:55 | 813 | 167.20 | XLON | 00041380019TRLO0 |
14:19:55 | 1864 | 167.20 | XLON | 00041380018TRLO0 |
14:21:44 | 746 | 166.60 | XLON | 00041380072TRLO0 |
14:21:44 | 956 | 166.60 | BATE | 00041380071TRLO0 |
14:21:44 | 1064 | 166.80 | XLON | 00041380070TRLO0 |
14:21:44 | 1502 | 166.80 | BATE | 00041380069TRLO0 |
14:34:29 | 1148 | 166.60 | XLON | 00041380574TRLO0 |
14:34:29 | 1060 | 166.80 | BATE | 00041380573TRLO0 |
14:34:29 | 269 | 166.80 | BATE | 00041380572TRLO0 |
14:39:14 | 151 | 166.60 | XLON | 00041380782TRLO0 |
14:39:14 | 940 | 166.60 | XLON | 00041380781TRLO0 |
14:39:14 | 623 | 166.60 | XLON | 00041380780TRLO0 |
14:39:14 | 121 | 166.60 | XLON | 00041380779TRLO0 |
14:39:14 | 269 | 166.60 | XLON | 00041380778TRLO0 |
14:39:14 | 3 | 166.60 | XLON | 00041380777TRLO0 |
14:39:14 | 190 | 166.60 | XLON | 00041380776TRLO0 |
14:39:14 | 1493 | 166.60 | XLON | 00041380775TRLO0 |
14:39:14 | 980 | 166.60 | XLON | 00041380774TRLO0 |
14:39:14 | 184 | 166.40 | TRQX | 00041380773TRLO0 |
14:39:14 | 1224 | 166.40 | XLON | 00041380772TRLO0 |
14:39:14 | 1710 | 166.40 | BATE | 00041380771TRLO0 |
14:39:14 | 949 | 166.40 | CHIX | 00041380770TRLO0 |
14:45:02 | 1562 | 166.60 | XLON | 00041380976TRLO0 |
14:48:54 | 303 | 166.60 | XLON | 00041381129TRLO0 |
14:48:54 | 1019 | 166.60 | XLON | 00041381128TRLO0 |
14:48:54 | 329 | 166.60 | XLON | 00041381127TRLO0 |
14:52:46 | 84 | 166.60 | XLON | 00041381290TRLO0 |
14:52:46 | 1147 | 166.60 | XLON | 00041381289TRLO0 |
14:55:37 | 358 | 166.40 | BATE | 00041381373TRLO0 |
14:55:37 | 554 | 166.40 | BATE | 00041381372TRLO0 |
14:55:37 | 820 | 166.40 | BATE | 00041381371TRLO0 |
14:55:37 | 954 | 166.20 | BATE | 00041381368TRLO0 |
14:55:37 | 140 | 166.20 | TRQX | 00041381370TRLO0 |
14:55:37 | 741 | 166.20 | XLON | 00041381369TRLO0 |
14:55:37 | 1454 | 166.20 | XLON | 00041381367TRLO0 |
14:59:56 | 107 | 166.00 | BATE | 00041381576TRLO0 |
15:03:29 | 1319 | 166.00 | XLON | 00041381753TRLO0 |
15:03:29 | 1533 | 166.00 | BATE | 00041381752TRLO0 |
15:05:29 | 529 | 166.20 | XLON | 00041381897TRLO0 |
15:05:29 | 111 | 166.20 | XLON | 00041381896TRLO0 |
15:05:29 | 2056 | 166.20 | XLON | 00041381895TRLO0 |
15:23:11 | 322 | 166.80 | XLON | 00041382993TRLO0 |
15:23:11 | 458 | 166.80 | XLON | 00041382992TRLO0 |
15:23:11 | 812 | 166.80 | XLON | 00041382991TRLO0 |
15:23:11 | 756 | 166.80 | XLON | 00041382990TRLO0 |
15:23:11 | 360 | 166.80 | XLON | 00041382989TRLO0 |
15:23:11 | 370 | 166.80 | XLON | 00041382988TRLO0 |
15:23:11 | 887 | 166.80 | XLON | 00041382987TRLO0 |
15:23:11 | 796 | 166.80 | XLON | 00041382986TRLO0 |
15:23:11 | 579 | 166.80 | XLON | 00041382985TRLO0 |
15:32:27 | 1219 | 166.80 | BATE | 00041383428TRLO0 |
15:32:50 | 1163 | 166.80 | XLON | 00041383444TRLO0 |
15:35:36 | 737 | 166.80 | XLON | 00041383553TRLO0 |
15:35:36 | 913 | 166.80 | XLON | 00041383551TRLO0 |
15:35:36 | 770 | 166.80 | XLON | 00041383554TRLO0 |
15:35:36 | 10 | 166.80 | XLON | 00041383552TRLO0 |
15:35:36 | 1204 | 166.80 | XLON | 00041383555TRLO0 |
15:35:36 | 1008 | 166.80 | BATE | 00041383548TRLO0 |
15:35:36 | 1007 | 166.80 | BATE | 00041383550TRLO0 |
15:35:36 | 483 | 166.80 | BATE | 00041383549TRLO0 |
15:35:36 | 226 | 166.80 | BATE | 00041383547TRLO0 |
15:35:36 | 1796 | 166.60 | CHIX | 00041383542TRLO0 |
15:35:36 | 171 | 166.60 | TRQX | 00041383545TRLO0 |
15:35:36 | 964 | 166.60 | XLON | 00041383546TRLO0 |
15:35:36 | 582 | 166.60 | XLON | 00041383544TRLO0 |
15:35:36 | 1546 | 166.60 | BATE | 00041383543TRLO0 |
15:35:40 | 142 | 166.60 | TRQX | 00041383559TRLO0 |
15:35:40 | 708 | 166.60 | CHIX | 00041383558TRLO0 |
15:42:00 | 723 | 167.00 | XLON | 00041383860TRLO0 |
15:43:02 | 526 | 167.00 | XLON | 00041383895TRLO0 |
15:43:02 | 258 | 167.00 | XLON | 00041383894TRLO0 |
15:44:58 | 181 | 167.00 | XLON | 00041383983TRLO0 |
15:44:58 | 578 | 167.00 | XLON | 00041383984TRLO0 |
15:45:00 | 705 | 166.80 | BATE | 00041383991TRLO0 |
15:45:00 | 224 | 166.80 | BATE | 00041383990TRLO0 |
15:45:00 | 1105 | 166.60 | BATE | 00041383987TRLO0 |
15:45:00 | 354 | 166.60 | BATE | 00041383988TRLO0 |
15:45:00 | 2415 | 166.60 | XLON | 00041383989TRLO0 |
15:45:05 | 391 | 166.40 | BATE | 00041383998TRLO0 |
15:50:59 | 2286 | 166.40 | XLON | 00041384318TRLO0 |
15:50:59 | 1402 | 166.40 | BATE | 00041384317TRLO0 |
15:58:30 | 741 | 166.60 | XLON | 00041384788TRLO0 |
16:02:22 | 239 | 167.60 | XLON | 00041384986TRLO0 |
16:02:22 | 1000 | 167.60 | XLON | 00041384985TRLO0 |
16:02:22 | 500 | 167.60 | XLON | 00041384988TRLO0 |
16:02:22 | 272 | 167.60 | XLON | 00041384987TRLO0 |
16:02:22 | 309 | 167.80 | BATE | 00041384983TRLO0 |
16:02:22 | 378 | 167.80 | BATE | 00041384984TRLO0 |
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
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