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Webuild

Transaction in Own Shares Nov 24, 2025

4062_rns_2025-11-24_1bbbfa26-9966-44df-9522-edc868a8fc75.pdf

Transaction in Own Shares

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PRESS RELEASE

WEEKLY COMMUNICATION REGARDING SHARE BUY-BACK PROGRAMME PURCHASED No. 360,867 SHARES (EQUAL TO 0.035% OF THE ORDINARY SHARE CAPITAL) OVERALL EQUIVALENT: €1.15 MILLIONS

Milan, November 24, 2025 Webuild informs that it has purchased, in the period November 17-21, 2025 included, no. 360,867 ordinary treasury shares (equal to 0.035% of the ordinary share capital and 3.05% of the total volume of the exchanged shares in the aforementioned period) for an overall countervalue of €1,151,128.18.

In light of the above, the total amount of ordinary treasury shares held by the company as of November 21, 2025, amounts to 28,464,304 ordinary treasury shares, the equivalent of 2.797% of the ordinary share capital.

Below, attached, the details of the purchases made (through the intermediary Intermonte S.p.A.) and the operations carried out in the aforementioned period, in detail.

DATE No. SHARES
PURCHASED
AVERAGE UNIT PRICE
(Euro)
COUNTERVALUE
(Euro)
18/11/2025 34,007 3.2016 108,876.30
19/11/2025 122,688 3.2091 393,720.15
21/11/2025 204,172 3.1764 648,531.74
TOTALE 360,867 3.1899 1,151,128.18

***

Webuild is a global leader in the construction of large, complex infrastructure projects, with a focus on sustainable mobility, hydropower, water treatment, and green buildings. A recognized leader in the water sector and active in about 50 countries, the Group employs approximately 95,000 people of over 125 nationalities. It boasts 120 years of experience with over 3,700 completed projects. Its track record includes 13,648 kilometres of railways, 891 kilometres of metro lines, 82,577 kilometres of roads and highways, 1,022 kilometres of bridges and viaducts, 3,462 kilometres of tunnels, and 319 dams and hydropower plants. Among its most iconic projects are the Grand Ethiopian Renaissance Dam in Ethiopia, the expansion of the Panama Canal, the Long Beach International Gateway bridge in California, the Second Bosphorus Bridge in Turkey, the Sydney Metro Northwest skytrain viaduct and bridge, the Kingdom Centre skyscraper in Riyadh, and metro lines in cities such as Copenhagen, Paris, Rome, Milan, Naples, Doha, Thessaloniki, and Riyadh. Ongoing projects include the New Genoa Breakwater, the Brenner Base Tunnel, the Pedemontana Lombarda Highway, Metro di Roma's Line C, the Genoa-Milan and Naples-Bari high-speed/high-capacity railways, the Palermo-Catania-Messina high-capacity railway, the Snowy 2.0 hydropower scheme in Australia and the Dams System in Trojena in Saudi Arabia. As of December 31, 2024, the Group registered total revenues of €12 billion. As of June 30, 2025, its total order backlog stands at approximately €59 billion, with over 90% of its construction backlog related to projects linked to the United Nations Sustainable Development Goals. Listed on the Borsa Italiana stock exchange in Milan (WBD; WBD.MI; WBD:IM), it is member of the MIB ESG index of Italian companies with best ESG practices. Headquartered in Italy, it is subject to the management and coordination of Salini Costruttori S.p.A.

More information at www.webuildgroup.com

Contacts: Media Relations Investor Relations Francesca Romana Chiarano Amarilda Karaj

email: [email protected] email: [email protected]

Tel. +39 338 247 4827 Tel +39 06 6776 26975

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OPERATIONS IN DETAIL
Date Price (Euro) no. shares purchased Time
18/11/2025 3,22 249 12:28:34
18/11/2025 3,22 1.177 12:28:34
18/11/2025 3,22 3.823 12:28:34
18/11/2025 3,218 4.751 12:33:32
18/11/2025 3,212 336 12:46:16
18/11/2025 3,212 4.664 12:46:16
18/11/2025 3,212 390 13:18:21
18/11/2025 3,212 389 13:39:32
18/11/2025 3,21 388 13:42:07
18/11/2025 3,2 390 13:53:45
18/11/2025 3,198 390 14:05:35
18/11/2025 3,192 393 14:16:33
18/11/2025 3,192 393 14:34:01
18/11/2025 3,194 205 14:36:16
18/11/2025 3,194 187 14:36:16
18/11/2025 3,192 60 14:44:18
18/11/2025 3,192 330 14:44:18
18/11/2025 3,19 393 14:52:42
18/11/2025 3,186 145 14:58:02
18/11/2025 3,184 394 15:02:25
18/11/2025 3,182 391 15:11:42
18/11/2025 3,182 393 15:18:15
18/11/2025 3,18 356 15:25:34
18/11/2025 3,182 394 15:31:22
18/11/2025 3,194 336 15:37:17
18/11/2025 3,198 390 15:40:39
18/11/2025 3,196 391 15:41:50
18/11/2025 3,202 391 15:46:22
18/11/2025 3,19 391 15:51:54
18/11/2025 3,184 392 15:57:42
18/11/2025 3,18 393 16:03:14
18/11/2025 3,176 394 16:11:36
18/11/2025 3,176 300 16:15:10
18/11/2025 3,176 93 16:15:10
18/11/2025 3,178 395 16:21:10
18/11/2025 3,182 394 16:29:09
18/11/2025 3,184 394 16:33:13
18/11/2025 3,178 393 16:40:59
18/11/2025 3,174 391 16:44:00
18/11/2025 3,18 394 16:50:35
18/11/2025 3,178 394 16:54:23
18/11/2025 3,178 393 16:59:16
18/11/2025 3,174 393 17:06:42
18/11/2025 3,176 395 17:09:23
18/11/2025 3,194 391 17:16:28
18/11/2025 3,194 390 17:18:29
18/11/2025 3,198 498 17:20:30

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18/11/2025 3,198 333 17:20:30
18/11/2025 3,194 1.908 17:35:19
18/11/2025 3,194 1.049 17:35:19
18/11/2025 3,194 1.050 17:35:19
19/11/2025 3,184 300 10:59:24
19/11/2025 3,18 356 11:08:37
19/11/2025 3,18 3.811 11:08:37
19/11/2025 3,188 286 11:09:58
19/11/2025 3,192 4.155 11:17:16
19/11/2025 3,196 3.807 11:28:16
19/11/2025 3,192 1.005 11:34:10
19/11/2025 3,192 605 11:34:10
19/11/2025 3,2 4.155 11:36:40
19/11/2025 3,198 4.171 11:40:48
19/11/2025 3,188 282 11:48:33
19/11/2025 3,196 546 11:51:05
19/11/2025 3,204 4.186 11:55:02
19/11/2025 3,202 3.761 11:55:04
19/11/2025 3,204 4.172 12:01:28
19/11/2025 3,2 3.688 12:04:46
19/11/2025 3,192 4.165 12:07:16
19/11/2025 3,206 3.713 12:16:02
19/11/2025 3,22 3.692 12:18:37
19/11/2025 3,22 4.182 12:20:30
19/11/2025 3,218 4.155 12:21:32
19/11/2025 3,214 4.179 12:31:10
19/11/2025 3,218 4.172 12:41:35
19/11/2025 3,22 4.168 12:47:32
19/11/2025 3,22 4.145 12:51:49
19/11/2025 3,216 3.900 13:03:41
19/11/2025 3,222 4.171 13:16:32
19/11/2025 3,22 1.710 13:23:13
19/11/2025 3,218 1.938 13:23:42
19/11/2025 3,22 198 13:26:40
19/11/2025 3,22 3.965 13:26:40
19/11/2025 3,22 4.183 13:27:31
19/11/2025 3,218 4.175 13:36:05
19/11/2025 3,206 500 15:12:37
19/11/2025 3,208 832 15:23:47
19/11/2025 3,22 2.475 17:24:27
19/11/2025 3,22 1.096 17:25:05
19/11/2025 3,21 15.087 17:35:02
19/11/2025 3,21 2.601 17:35:02
21/11/2025 3,174 1.000 09:12:25
21/11/2025 3,174 253 09:12:25
21/11/2025 3,166 2.504 09:12:48
21/11/2025 3,176 2.501 09:14:40
21/11/2025 3,168 2.506 09:19:23
21/11/2025 3,164 2.504 09:19:41

{3}------------------------------------------------

21/11/2025 3,164 645 09:20:40
21/11/2025 3,164 1.845 09:21:23
21/11/2025 3,176 2.505 09:23:35
21/11/2025 3,194 316 09:26:46
21/11/2025 3,194 804 09:26:46
21/11/2025 3,194 1.392 09:26:46
21/11/2025 3,194 1.274 09:27:03
21/11/2025 3,198 2.488 09:30:32
21/11/2025 3,186 1.404 09:35:00
21/11/2025 3,186 1.102 09:35:00
21/11/2025 3,188 2.013 09:39:50
21/11/2025 3,194 2.495 09:48:25
21/11/2025 3,19 68 09:49:02
21/11/2025 3,19 2.434 09:49:02
21/11/2025 3,192 573 10:00:12
21/11/2025 3,192 1.926 10:00:12
21/11/2025 3,186 2.499 10:00:31
21/11/2025 3,182 2.509 10:14:57
21/11/2025 3,176 2.496 10:22:12
21/11/2025 3,174 2.494 10:30:41
21/11/2025 3,17 2.491 10:35:19
21/11/2025 3,166 2.489 10:41:44
21/11/2025 3,166 168 10:57:31
21/11/2025 3,166 30 10:57:31
21/11/2025 3,166 1.362 10:57:31
21/11/2025 3,166 937 10:57:31
21/11/2025 3,162 852 11:03:22
21/11/2025 3,162 1.660 11:03:22
21/11/2025 3,152 2.508 11:11:43
21/11/2025 3,15 10.000 11:20:42
21/11/2025 3,146 7.431 11:22:55
21/11/2025 3,146 2.569 11:22:55
21/11/2025 3,142 2.509 11:27:49
21/11/2025 3,164 467 11:38:56
21/11/2025 3,164 2.036 11:38:56
21/11/2025 3,162 1.868 11:43:27
21/11/2025 3,162 157 11:43:27
21/11/2025 3,158 2.508 11:50:18
21/11/2025 3,18 2.501 12:13:04
21/11/2025 3,186 209 12:24:38
21/11/2025 3,186 2.281 12:24:40
21/11/2025 3,184 2.510 12:25:29
21/11/2025 3,184 2.488 12:41:19
21/11/2025 3,178 2.505 12:57:04
21/11/2025 3,178 2.488 13:04:46
21/11/2025 3,174 562 13:30:32
21/11/2025 3,174 1.936 13:30:32
21/11/2025 3,18 2.507 13:39:06
21/11/2025 3,196 393 14:01:00

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i . i i i i Ì
21/11/2025 3,196 2.109 14:01:00
21/11/2025 3,196 2.512 14:21:11
21/11/2025 3,19 2.488 14:25:11
21/11/2025 3,192 1.335 14:37:25
21/11/2025 3,192 1.168 14:37:25
21/11/2025 3,204 2.491 14:56:15
21/11/2025 3,196 2.489 15:01:47
21/11/2025 3,192 2.504 15:13:37
21/11/2025 3,19 2.488 15:21:40
21/11/2025 3,194 2.491 15:33:30
21/11/2025 3,194 2.512 15:35:11
21/11/2025 3,194 2.498 15:46:09
21/11/2025 3,194 799 15:49:21
21/11/2025 3,194 98 15:49:21
21/11/2025 3,194 100 15:49:21
21/11/2025 3,198 2.487 15:56:27
21/11/2025 3,194 2.510 15:57:23
21/11/2025 3,188 2.501 16:10:50
21/11/2025 3,186 8.500 16:12:44
21/11/2025 3,186 750 16:12:44
21/11/2025 3,186 750 16:12:44
21/11/2025 3,182 2.494 16:17:02
21/11/2025 3,178 2.494 16:20:11
21/11/2025 3,174 2.506 16:28:16
21/11/2025 3,168 2.495 16:36:35
21/11/2025 3,176 2.489 16:47:42
21/11/2025 3,168 2.494 16:52:03
21/11/2025 3,17 2.492 16:59:45
21/11/2025 3,166 2.512 17:11:20
21/11/2025 3,168 2.472 17:13:55
21/11/2025 3,178 2.497 17:28:01
21/11/2025 3,178 2.489 17:28:02
21/11/2025 3,178 14 17:28:04
21/11/2025 3,176 43 17:29:00
21/11/2025 3,176 9.957 17:29:00
21/11/2025 3,178 315 17:29:06
21/11/2025 3,178 287 17:29:06
21/11/2025 3,178 861 17:29:06
21/11/2025 3,178 913 17:29:06
21/11/2025 3,178 7.624 17:29:06
21/11/2025 3,172 3.602 17:35:02
21/11/2025 3,172 570 17:35:02

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