Cergy, 24 September 2026 - SPIE, independent European leader in multi-technical services in the areas of energy and communications, announces the launch of the 10^th edition of its employee shareholding programme, SHARE FOR YOU.

From September 24 to October 15, 2026, employees will have the opportunity to become shareholders of the Group or to increase their holdings in the capital of SPIE, directly or via a company mutual fund. The SHARE FOR YOU plan was hugely successful in 2025 with close to 25,000 company employees subscribing to shares.

With this new operation, SPIE is once again inviting its employees to share in its performance in the long term.

The subscription price has been set at 35.36 euros. This takes into account a 20% discount applied to the average opening price of the SPIE share on the Euronext Paris market during the 20 trading days preceding September 18, 2026, i.e. between August 21 and September 17, 2026, inclusive.

This 10^th edition of the SHARE FOR YOU programme since SPIE's IPO in 2015 is open to more than 51,000 employees from 18 countries (Australia, Austria, Belgium, Czech Republic, Denmark, France, Germany, Hungary, Luxembourg, Mexico, Netherlands, Poland, Romania, Slovakia, Spain, Switzerland, United Arab Emirates and United Kingdom).

Employees have been the Group’s largest shareholder group since December 2023. As at 30 June 2026, they held 8% of the share capital.

The terms of this operation are described below.

ISSUER

SPIE SA (hereinafter the “Company”) 
Registered office: 10 avenue de l'Entreprise, 95863 Cergy-Pontoise Cedex - France 
Registered capital: €79,598,276.45
RCS: 532 712 825 R.C.S. Pontoise 
Euronext Paris (France) 
Ordinary share, ISIN code: FR0012757854

FRAMEWORK OF THE OPERATION - PROPOSED SECURITIES

At the Combined General Meeting of April 30, 2026, the shareholders of the Company delegated to the Board of Directors in their 22^nd resolution, the power to decide to increase the Company's share capital, in one or more instalments, by up to a maximum nominal amount of € 2,000,000, or other securities giving access to the Company's capital, reserved for employees of the Company and French and foreign companies associated with it who are members of a Group company savings plan, subject to the conditions of Articles L. 225-180 of the Commercial Code and L. 3344-1 of the Labour Code. On July 29, 2026, the Board of Directors decided on the principle of issuing ordinary shares for the benefit of employees who are members of a Group company savings plan, adopted the main characteristics and delegated to the Chief Executive Officer of the Company the necessary powers for the implementation of the operation.

SUBSCRIPTION CONDITIONS

INDICATIVE TIMETABLE OF THE OPERATION

QUOTATION

The admission of the new SPIE shares for trading on the Euronext Paris market (ISIN code: FR0012757854) on the same line as the existing shares will be requested as soon as possible after the completion of the capital increase scheduled for December 3, 2026.

SPECIAL NOTE FOR INTERNATIONAL TRANSACTIONS

This memorandum does not constitute an offer to sell or a request to subscribe to SPIE shares. The SPIE share offer reserved for employees will only be implemented in countries where such an offer has been registered or notified to the competent local authorities and/or following the approval of a prospectus by the competent local authorities, or in consideration of an exemption from the obligation to draw up a prospectus or to register or notify the offer. More generally, the offer will only be made in countries where all the required registration procedures and/or notifications have been carried out and the necessary authorisations have been obtained.

POINTS OF CONTACT FOR BENEFICIARIES OF THE OFFER

For any questions relating to this offer, beneficiaries may contact their Human Resources manager and/or any other person as specified in the documents given to the beneficiaries.