This document must not be disclosed, published, or distributed, in whole or in part, directly or indirectly, in any country where such disclosure, publication, or distribution would constitute a violation of applicable laws or regulations in that jurisdiction

MILAN, September 18, 2026 - With reference to the voluntary tender offer launched by Webuild S.p.A. (“Webuild”) on all the ordinary shares in Trevi-Finanziaria Industriale S.p.A. ( “Trevi”), announced to the market on July 29, 2026 pursuant to Articles 102 of Legislative Decree No. 58 of February 24, 1998 and 37 of the Regulation adopted by CONSOB Resolution No. 11971 of May 14, 1999 (the “Offer”), Webuild hereby announces, pursuant to Article 38, paragraph 2, of Regulation No. 11971/1999, that the offer document has been published today, as approved by CONSOB by Resolution No. 24131 of September 15, 2026 (the “Offer Document”).

Webuild notes that, as indicated in the Offer Document, the Offer acceptance period (the “Acceptance Period”) will begin at 8:30AM (Italian time) on September 28, 2026, and will end at 5:30PM (Italian time) on November 20, 2026 (both dates included), unless the Acceptance Period is extended.

Payment of the consideration for each share of Trevi tendered in acceptance of the Offer will be made on November 27, 2026, unless the Acceptance Period is extended.

In order to make a properly informed assessment of the Offer, Trevi shareholders are invited to read the Offer Document, to which reference is made. 

Finally, please note that for any requests or information regarding the Offer, Trevi shareholders may use the following information channels, which will be available throughout the Acceptance Period on business days from 9:00AM to 6:00PM (Italian time): (i) the dedicated E-Mail account opatrevi_webuild@georgeson.com; (ii) the toll-free number 800 189039 (for callers from Italy); (iii) the direct line +39 06 45212909 (also for callers from abroad). The Global Information Agent website is www.georgeson.com/it.

Among the main points of the Offer Document:

• An Offer entirely in cash of 4.50 Euro per share, representing a premium of approximately 30% over the official price as of the reference date[1], leaving tendering shareholders with no exposure to future financial market volatility.
• An Offer fully financed by a dedicated facility, covering both the acquisition of all Trevi shares and the potential refinancing of Trevi's indebtedness, which is not a condition of the Offer.
• The integration of Trevi's expertise in special foundations into a global industrial group — which reported revenues of Euro 13.6 billion in 2025 and an order backlog of Euro 54 billion as at 30 June 2026 — that will enable Trevi to continue and expand its business, while gaining direct access to the network of the Webuild Group, which operates in some 50 countries and draws on over 120 years of history.
• Joining the Webuild Group would open new growth opportunities for Trevi, its people and its know-how, while preserving its identity, its operational headquarters in Italy and its technical, design and managerial expertise. Trevi would continue to operate on an open-market basis, offering its high value-added services to the entire sector.
• An industrial rationale rooted in the value chain: the success of the Offer would enable the Webuild Group to bring in-house high value-added expertise currently also entrusted to third parties, and to strengthen its competitive positioning in tenders for large and complex projects by offering a more efficient and competitive integrated end-to-end solution, also in terms of pricing.
• A deepening of an industrial partnership already established over many years: Webuild and Trevi work side by side on some of the largest construction sites in Italy and abroad, from the Rogun Dam in Tajikistan to Line C of the Rome Metro - a relationship that the transaction would allow them to consolidate in the long term.
• Italian excellence on a global stage: becoming part of one of the world's leading players in major infrastructure, by order backlog, global positioning and financial strength, would broaden Trevi's commercial reach, giving it access to new geographies, new clients and larger and more complex tenders for projects.

This press release and all documents relating to the Offer will be made available, amongst others, on the following websites:

https://www.webuildgroup.com/it/investitori/opa-trevi and 

https://www.webuildgroup.com/en/investor-relations/opa-trevi.

***

This communication does not constitute, and is not intended to constitute, an offer, invitation or solicitation to buy or otherwise acquire, subscribe for, sell or otherwise dispose of any financial instruments, and no sale, issuance or transfer of financial instruments of Trevi Finanziaria Industriale S.p.A. will be made in any country in violation of the applicable laws. The Offer will be made by means of publication of the relevant offer document, subject to CONSOB approval. The offer document will contain the full description of the terms and conditions of the Offer, including acceptance procedures. The publication or dissemination of this communication in countries other than Italy may be subject to restrictions under applicable law, and accordingly any person subject to the laws of any country other than Italy is required to independently inform itself of any restrictions under applicable laws and to ensure compliance therewith. Any failure to comply with such restrictions may constitute a violation of the applicable laws of the relevant country. To the fullest extent permitted by applicable law, the parties involved in the Offer shall be deemed exempt from any liability or adverse consequence arising from the violation of such restrictions by such persons. This communication has been prepared in accordance with Italian law and the information disclosed herein may differ from that which would have been disclosed had the communication been prepared in accordance with the laws of countries other than Italy. No copy of this communication or any other documents relating to the Offer will be, or may be, mailed or otherwise transmitted or distributed in or from any country where the provisions of local law may give rise to civil, criminal or regulatory risks if information concerning the Offer is transmitted or made available to shareholders of Trevi Finanziaria Industriale S.p.A. in such country or other countries where such actions would constitute a violation of the relevant laws, and any person receiving such documents (including custodians, nominees or trustees) must not mail or otherwise transmit or distribute them to or from any such country. The contents of this communication are of an informational and preliminary nature and should not be construed as investment advice. The statements contained herein have not been independently verified. No representation or warranty, express or implied, is made as to, and no reliance should be placed on, the fairness, accuracy, completeness, correctness or reliability of the information contained herein. Neither Webuild S.p.A. nor any of its representatives nor its direct or indirect controlling shareholders shall accept any liability (whether in negligence or otherwise) arising in any way in connection with such information or in connection with any loss arising from its use or otherwise arising in connection with this communication. By accessing this communication, you agree to be bound by the foregoing limitations.
 

[1] 26 June 2026, the undisturbed date prior to the ICOP Offer announcement