Mare Engineering Group — M&A Activity 2025

Jul 29, 2025

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, DIRECTLY OR INDIRECTLY IN, INTO OR FROM ANY JURISDICTION WHERE TO DO SO WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OR REGULATIONS OF SUCH JURISDICTION (INCLUDING UNITED STATES OF AMERICA, CANADA, AUSTRALIA AND JAPAN).

NOTICE PURSUANT TO ARTICLE 41, PARAGRAPH 2, LETTER C) OF REGULATION ADOPTED BY CONSOB WITH RESOLUTION NO. 11971 OF 14 MAY 1999, AS SUBSEQUENTLY AMENDED ("ISSUERS' REGULATION") PUBLISHED IN THE CONTEXT OF THE VOLUNTARY PARTIAL PUBLIC PURCHASE AND EXCHANGE OFFER LAUNCHED BY MARE ENGINEERING GROUP S.P.A. ON ALL ORDINARY AND MULTIPLE-VOTING SHARES OF ELES SEMICONDUCTOR EQUIPMENT S.P.A. CORRESPONDING TO 29,99% OF VOTING RIGHTS

MARE GROUP: ELES OPAS DEADLINE SET FOR AUGUST 4, 2025

Salerno, July 29, 2025

Mare Group S.p.A. (ticker MARE.MI), a digital engineering company listed on Euronext Growth Milan and active in Italy and abroad in innovation through enabling technologies ("Mare Group", the "Company", or the "Group"), in relation to the voluntary and partial Public Exchange and Purchase Offer (OPAS) launched by the Company for the ordinary and multiple voting shares of Eles Semiconductor Equipment S.p.A., up to a maximum of 29.99% of the voting rights, it is announced that the deadline for acceptance is set for Monday, August 4, 2025; payment of the consideration is scheduled for Friday, August 8, 2025.

This press release is available on the Company's website https://www.maregroup.it/investor-relations and on the authorized system for the transmission and storage of regulated information at https:///.

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This communication does not constitute, nor is it intended to constitute, an offer, invitation or solicitation to purchase, acquire, subscribe for, sell or otherwise dispose of any financial instruments, and no sale, issuance or transfer of securities of ELES or Mare Group shall be made in any country in breach of the applicable laws and regulations of that country.

For complete information on the Offer and the procedures for acceptance, please refer to the offer document published in the dedicated sections of the Mare Group website (Investor Relations → OPAS Eles) and the Eles website.

The dissemination of this communication in countries other than Italy may be subject to legal or regulatory restrictions, and any person in possession of this communication must independently inquire about any such restrictions and comply with them. Any failure to comply with such restrictions may constitute a violation of the applicable laws of such jurisdictions.

To the maximum extent permitted by applicable law, the Offeror and the parties involved in the Offer shall be deemed to be exempt from any liability deriving from any violation by such persons of the aforementioned restrictions.

This communication has been prepared in accordance with Italian law and the information disclosed herein may differ from that which would have been disclosed if the communication had been prepared in accordance with the laws of jurisdictions other than Italy.

No copy of this communication or any other document relating to the Offer shall be, nor may be, sent by mail or otherwise forwarded or distributed from or into any country where local laws may give rise to civil, criminal or regulatory risks if information regarding the Offer is transmitted or made available to shareholders of ELES or Mare Group in such country or where such conduct would constitute a violation of the laws of such country. Any person receiving such documents (including as a custodian, fiduciary or trustee) must not mail or otherwise forward or distribute them into or from such jurisdictions.

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About the Company

Founded in 2001, Mare Group is an engineering company listed on Euronext Growth Milan with a model based on proprietary technology platforms. With more than 2,000 clients, a team of over 500 people, 25 operational and commercial offices in 5 countries, Mare Group is a key player in the innovation ecosystem. Significant investments in R&D and the 16 acquisitions completed since 2019, with subsequent mergers, demonstrate the Group's strong ability to integrate complementary resources and technologies to expand its product portfolio and increase its market presence.

Contact Info

Issuer: Mare Group S.p.A.

Gennaro Tesone (Investor Relations Manager) Via Ex Aeroporto SNC, 80038 Pomigliano d'Arco T. +39 081 803 6677 – E-mail investor-relator@maregroup.it

Euronext Growth Advisor: illimity Bank S.p.A. Via Soperga 9, 20124 Milano T. +39 0282849699 – E-mail maregroup@illimity.com Investor & Media Relations Advisor: IRTOP Consulting Via Bigli, 19 - 20121 Milano T. +39 0245473883 – E-mail ir@irtop.com (investors) – mediarelations@irtop.com (media)

Specialist: MIT SIM S.p.A. Corso Venezia 16, 20121 Milano T. +39 0230561270 – E-mail investor.relations@mitsim.it