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Webuild

Transaction in Own Shares Nov 10, 2025

4062_rns_2025-11-10_5de11667-cf0b-42c0-ac42-7012674ac4f6.pdf

Transaction in Own Shares

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PRESS RELEASE

WEEKLY COMMUNICATION REGARDING SHARE BUY-BACK PROGRAMME PURCHASED No. 350,000 SHARES (EQUAL TO 0.034% OF THE ORDINARY SHARE CAPITAL) OVERALL EQUIVALENT: €1.14 MILLIONS

Milan, November 10, 2025 – Webuild informs that it has purchased, in the period November 3-7, 2025 included, no. 350,000 ordinary treasury shares (equal to 0.034% of the ordinary share capital and 2.71% of the total volume of the exchanged shares in the aforementioned period) for an overall countervalue of €1,144,792.50.

In light of the above, the total amount of ordinary treasury shares held by the company as of November 7, 2025, amounts to 28,073,437 ordinary treasury shares, the equivalent of 2.759% 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)
06/11/2025 250,000 3.2750 818,743.50
07/11/2025 100,000 3.2605 326,049.00
TOTALE 350,000 3.2708 1,144,792.50

***

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 nearly 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 (USA), the Second Bosphorus Bridge (Turkey), the Sydney Metro Northwest skytrain viaduct and bridge (Australia), the Kingdom Centre skyscraper in Riyadh (Saudi Arabia), 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 Australian and the Dams System in Trojena in the Kingdom of Saudi Arabia. As of December 31, 2024, the Group registered total revenues for €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 (SDGs). 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 Tel. +39 338 247 4827 Tel +39 06 6776 26975

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

OPERATIONS IN DETAIL
Date Price (Euro) no. shares purchased Time
06/11/2025 3,314 433 10:10:12
06/11/2025 3,314 399 10:10:12
06/11/2025 3,314 62 10:10:23
06/11/2025 3,314 9.106 10:11:29
06/11/2025 3,312 8.071 10:11:29
06/11/2025 3,312 1.929 10:11:29
06/11/2025 3,318 3.023 10:22:18
06/11/2025 3,318 1.675 10:22:18
06/11/2025 3,318 5.302 10:23:29
06/11/2025 3,314 1.141 10:25:53
06/11/2025 3,316 1.169 10:39:43
06/11/2025 3,328 920 10:46:34
06/11/2025 3,328 250 10:46:34
06/11/2025 3,32 432 10:53:28
06/11/2025 3,32 736 10:53:28
06/11/2025 3,324 1.161 10:58:59
06/11/2025 3,322 1.166 11:03:49
06/11/2025 3,328 475 11:11:46
06/11/2025 3,326 36 11:12:24
06/11/2025 3,328 1.169 11:14:59
06/11/2025 3,328 1.165 11:21:37
06/11/2025 3,326 1.169 11:22:01
06/11/2025 3,314 1.168 11:34:21
06/11/2025 3,318 1.171 11:38:30
06/11/2025 3,318 534 11:53:19
06/11/2025 3,318 635 11:53:19
06/11/2025 3,316 444 11:57:14
06/11/2025 3,316 1.166 12:04:26
06/11/2025 3,318 1.161 12:10:48
06/11/2025 3,316 1.164 12:22:59
06/11/2025 3,314 1.167 12:30:47
06/11/2025 3,322 502 12:48:03
06/11/2025 3,322 533 12:48:03
06/11/2025 3,322 125 12:48:03
06/11/2025 3,32 1.166 12:54:43
06/11/2025 3,32 1.169 13:00:05
06/11/2025 3,32 1.000 13:11:05
06/11/2025 3,32 201 13:14:52
06/11/2025 3,322 1.164 13:21:38
06/11/2025 3,318 1.171 13:24:39
06/11/2025 3,314 476 13:45:53
06/11/2025 3,312 46 13:47:21
06/11/2025 3,312 1.121 13:47:21
06/11/2025 3,318 1.168 13:59:58
06/11/2025 3,314 705 14:03:21
06/11/2025 3,314 462 14:03:21

06/11/2025 3,314 758 14:15:24
06/11/2025 3,314 9 14:15:24
06/11/2025 3,314 88 14:15:24
06/11/2025 3,314 308 14:15:24
06/11/2025 3,306 1.166 14:30:18
06/11/2025 3,304 1.168 14:32:12
06/11/2025 3,302 1.163 14:50:39
06/11/2025 3,3 8.014 14:50:39
06/11/2025 3,3 1.000 14:51:44
06/11/2025 3,3 986 14:53:43
06/11/2025 3,3 1.162 14:55:17
06/11/2025 3,302 420 15:02:33
06/11/2025 3,302 751 15:02:33
06/11/2025 3,296 1.169 15:10:04
06/11/2025 3,296 1.163 15:17:04
06/11/2025 3,296 978 15:25:12
06/11/2025 3,296 192 15:25:12
06/11/2025 3,292 1.164 15:26:32
06/11/2025 3,29 10.000 15:29:20
06/11/2025 3,294 1.000 15:34:40
06/11/2025 3,292 1.168 15:38:02
06/11/2025 3,29 808 15:39:18
06/11/2025 3,282 1.162 15:43:41
06/11/2025 3,286 1.169 15:50:27
06/11/2025 3,282 1.166 15:52:51
06/11/2025 3,276 100 15:57:13
06/11/2025 3,278 1.164 16:01:39
06/11/2025 3,278 1.072 16:06:48
06/11/2025 3,278 99 16:06:48
06/11/2025 3,276 1.167 16:08:22
06/11/2025 3,274 821 16:14:39
06/11/2025 3,282 1.168 16:23:26
06/11/2025 3,28 1.166 16:28:21
06/11/2025 3,278 211 16:29:27
06/11/2025 3,282 1.160 16:34:39
06/11/2025 3,274 300 16:44:09
06/11/2025 3,274 868 16:44:09
06/11/2025 3,274 1.102 16:46:47
06/11/2025 3,274 58 16:46:47
06/11/2025 3,274 3 16:46:47
06/11/2025 3,27 10.000 16:53:54
06/11/2025 3,27 1.163 16:53:54
06/11/2025 3,272 1.172 16:55:41
06/11/2025 3,266 1.161 17:00:38
06/11/2025 3,262 1.167 17:03:19
06/11/2025 3,256 3.695 17:10:34
06/11/2025 3,256 219 17:10:34
06/11/2025 3,256 750 17:10:42

06/11/2025
3,256
5.336
17:10:56
06/11/2025
3,26
1.199
17:13:36
06/11/2025
3,264
1.166
17:15:19
06/11/2025
3,264
1.170
17:15:58
06/11/2025
3,26
8.801
17:19:11
06/11/2025
3,256
10.000
17:19:14
06/11/2025
3,254
1.163
17:19:17
06/11/2025
3,252
8.281
17:19:19
06/11/2025
3,252
1.719
17:19:22
06/11/2025
3,254
306
17:21:21
06/11/2025
3,256
942
17:22:07
06/11/2025
3,256
1.391
17:22:07
06/11/2025
3,25
475
17:27:10
06/11/2025
3,25
9.525
17:27:10
06/11/2025
3,244
228
17:35:25
06/11/2025
3,244
9.772
17:35:25
06/11/2025
3,244
10.000
17:35:25
06/11/2025
3,244
141
17:35:25
06/11/2025
3,244
12.809
17:35:25
06/11/2025
3,244
9.997
17:35:25
06/11/2025
3,244
7.063
17:35:25
06/11/2025
3,244
13.322
17:35:25
06/11/2025
3,244
6.668
17:35:25
07/11/2025
3,274
7
16:16:04
07/11/2025
3,274
742
16:16:08
07/11/2025
3,274
30
16:17:00
07/11/2025
3,274
897
16:18:56
07/11/2025
3,272
1.658
16:19:41
07/11/2025
3,27
3.555
16:19:41
07/11/2025
3,274
31
16:20:37
07/11/2025
3,274
4.969
16:22:59
07/11/2025
3,274
1.089
16:23:34
07/11/2025
3,274
356
16:23:34
07/11/2025
3,278
456
16:31:18
07/11/2025
3,278
1.207
16:31:18
07/11/2025
3,276
1.664
16:34:08
07/11/2025
3,274
5.000
16:36:49
07/11/2025
3,274
1.665
16:36:49
07/11/2025
3,266
2.982
16:39:52
07/11/2025
3,266
1.349
16:39:52
07/11/2025
3,266
669
16:39:52
07/11/2025
3,264
856
16:40:03
07/11/2025
3,264
900
16:45:26
07/11/2025
3,264
4.122
16:45:26
07/11/2025
3,264
4.122
16:45:26
07/11/2025
3,262
2.473
16:46:06
07/11/2025
3,262
1.084
16:46:22
07/11/2025 3,262 6.337 16:51:25

07/11/2025 3,262 106 16:51:25
07/11/2025 3,26 1.674 16:54:26
07/11/2025 3,258 10.000 17:01:42
07/11/2025 3,256 6.597 17:03:07
07/11/2025 3,256 3.403 17:03:07
07/11/2025 3,252 1.888 17:06:45
07/11/2025 3,252 3.112 17:06:45
07/11/2025 3,246 5.000 17:15:18
07/11/2025 3,246 1.476 17:19:14
07/11/2025 3,246 486 17:19:14
07/11/2025 3,246 351 17:19:14
07/11/2025 3,246 127 17:19:14
07/11/2025 3,246 2.560 17:19:22
07/11/2025 3,252 3.733 17:35:24
07/11/2025 3,252 68 17:35:24
07/11/2025 3,252 3.142 17:35:24
07/11/2025 3,252 8.057 17:35:24

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