La SIA S.p.A.

Earnings Release • May 14, 2025

PRESS RELEASE

THE BOARD OF DIRECTORS EXAMINED SOME MANAGEMENT AND BUSINESS INDICATORS FOR THE FIRST QUARTER OF 2025

VALUE OF PRODUCTION EQUAL TO € 3,6 M NFP CASH POSITIVE FOR € 3,6 M BACKLOG EQUAL TO c. € 36,1 M

Main results for the period:

• Value of Production: approximately 3,6 million Euro compared to 3,4 million Euro in March 2024 (+5%);
• NFP: 3,6 million Euro (cash) compared to 2,8 million Euro in December 2024 (+28%);
• Backlog: 36,1 million Euro in line with the previous year.

Rome, 14 May, 2025 - The Board of Directors of La SIA S.p.A. ("La SIA" or the "Company"), a company active in the engineering & design sector, whose shares are traded on Euronext Growth Milan, today approved certain unaudited selected information indicative of the Company's business performance for the first quarter of 2025.

Maurizio Ciardi, CEO of La SIA commented, "The results achieved in the first quarter of 2025 are in line with the path of diversification of market segments started last year and confirm the validity of the strategy adopted and the correctness of the growth trajectory of the different lines of business we are pursuing. Financial solidity, continuity in the effective management of the business and established relationships with public and private partners are helping to further strengthen our position as a reference entity in the engineering sector and to project ourselves into the future with momentum and determination."

■ Main results for the first quarter of 2025

In the first quarter of 2025, the Company recorded a Value of Production of 3.6 million Euro compared to 3.4 million Euro in the first quarter of 2024.

The NFP at 31 March 2025 is equal to 3.6 million Euro, with an increase compared to 31 December 2024 of approximately 0.8 million Euro mainly linked to the performance of ordinary management in the first quarter.

The backlog as at March 31, 2025 stands at 36.1 million Euro. The growth is in line with the first quarter of 2024, consistently with the further development of the Company's business. Compared to the amount of December 2024 (34.4 million Euro), c. 2.3 million Euro were transformed into revenues, new agreements signed for c. 4 million Euro and new orders finalized for 3.5 million Euro. The hard backlog component is equal to 12.7 million Euro and maintains its contribution to the overall backlog at 35%.

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■ Key Management KPIs as at 31 March, 2025

The process of business diversification and expansion into new areas continues in 2025. The customer portfolio is further expanding into new markets favoring the reduction of exposure to individual customers and thus risk. The Revenue component relating to the Civil business line as at March 31, 2025 stands at 53% (compared to 43% in March 2024), that of Utilities & Infrastructures at 12% (compared to 8% in March 2024) and that of Telco is equal to 35% (compared to 49% in March 2024) as per the company strategy of diversification and balance between business lines.

This press release is available on the Company's website https://lasia.it/investor-relations/, "Investor Relations/Press Releases" section.

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For the transmission of regulated information La SIA S.p.A. uses the dissemination system (SDIR) "" available at managed by Computershare S.p.A. with registered office in Via Lorenzo Mascheroni 19, Milan.

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Contacts

Investor Relator	Euronext Growth Advisor
Alessandra Speranza	illimity Bank S.p.A.
Viale Luigi Schiavonetti 286, 00173 Rome (RM)	Via Soperga 9, 20124 Milan
+39 0645441972	+39 0282849699
investorrelator@lasia.it	lasia@illimity.com
Specialist	Investor & Media Relations
MiT Sim S.p.A.	Twister Communications Group S.r.l.
Corso Venezia 16, 20121 Milan	Via Valparaiso, 3 - 20144 Milan
+ 39 0230561270	+39 02438114200
investor.relations@mitsim.it	Lucia Saluzzi lasia@twistergroup.it

The Company

La SIA S.p.A. is an innovative SME active in the engineering and design sector, specialising in the design of infrastructures in the fields of telecommunications, civil construction, mobility infrastructures and energy plants, using state-of-the-art technologies and specific know-how. La SIA is among the top 100 engineering companies in Italy, and among the first movers in the introduction of the BIM (Building Information Modeling) methodology, also used for safety, predictive maintenance and the protection of the country's artistic and historical heritage. The Company, established in 2004, operates through three business lines: the 'Civil & Design' line, specialising in the architectural, structural and plant design of complex buildings such as hospitals, data centres and stadiums, guaranteeing high quality and sustainability; the 'Utility & Infrastructure' line, focused on the management and design of infrastructures related to energy, road and rail networks, with particular attention to digital technologies and energy efficiency, and the design of medium voltage and

PRESS RELEASE

photovoltaic systems; and finally the 'Telecommunications' line, entirely dedicated to the design and construction of fibre optic and mobile radio networks.