Alten is a holding company. Through its subsidiaries, Co. operates in three areas: Engineering and Technology Consulting (ETC), Telecoms Networks and Multimedia, and Information Systems (NTIS). Through the Engineering and Technology Consulting (ETC) segment, Co. studies and designs technology products for technical divisions in industry and telecoms. The Telecoms Networks and Multimedia segment focuses on Product design, Architecture, deployment, and operation of networks. Lastly, the IT systems segment comprises Applications and software development, and Infrastructure and Telecoms (Applications, systems and networks Corporate telecommunications).

Bone Therapeutics is a biotechnology company with an advanced clinical pipeline of cell products for orthopaedic conditions and bone diseases (two Phase II/III and three Phase I/II clinical studies). These areas are characterized by high unmet medical needs due to the lack of efficacious and safe, non-invasive, treatments. Co. has two products in clinical trials, its allogeneic bone cell therapy product, ALLOB®, and its autologous bone cell therapy product, PREOB®. Co. is also conducting preclinical research on next generation products, such as combined cell-matrix products for large bone defects and maxillofacial.

Eramet is a mining and metallurgical group, which specializes in the extraction, production and marketing of non-ferrous metals, their chemical derivatives, alloys and superalloys, and parts. Co.'s operations are divided into three divisions: Nickel division which focuses on nickel and its derivative applications; Manganese division which focuses on manganese alloys, manganese chemical derivatives and provides recovery and recycling services of metals contained in oil-industry catalysts, electric batteries and acid solutions; and Alloys division which produces and sells special high-performance steels, superalloys and pre-machined parts based on these materials or aluminium and titanium.

High Co SA is a France-based marketing services group for mass-market retailers and consumer goods manufacturers. The Company offers marketing solutions, such as coupon issuing, a promotional technique that entitles the customer to a discount on a product; sampling, which consists in offering free samples to test a product; point-of sale, which ranges from shelf tags to in-store radio announcements, floor graphics and in-store field marketing; clearing, which consists of processing discount coupons and money-back offers; marketing communication agencies, which provide support for brands and retailers in their marketing campaigns, and digital services with the subsidiary, HighCo 3.0., which advises and assists clients on the integration of digital technologies for distributors and brands. The Company operates in France, Spain, United Kingdom, Poland, Russia and Turkey, among others.

Ses Imagotag SA Formerly known as Ses-Imagotag SA. Ses Imagotag SA is a France-based company, which designs and markets electronic shelf labeling systems for food and non-food retail industries. The Company's solutions include store electronic systems (SES), electronic labels, software, radio and mounting systems. The Company's solutions are designed for every type of retail environment, including hypermarkets, supermarkets, electronics stores, garden centers, pharmacies and service stations. The Company's products are distributed in approximately 50 countries worldwide. Ses Imagotag SA's main clients include Intermarche, E. Leclerc, Monoprix, Groupe Casino, Carrefour and Auchan. The Company has a global presence, through its own subsidiaries and representations, in Italy, Spain, the United Kingdom, Scandinavia, Canada, Mexico and Singapore, as well as more than 60 international partners. It operates through imagotag GmbH, a manufacturer of electronic components.

Verneuil Finance SA Formerly known as Verneuil Participations. Verneuil Finance SA, formerly known as Verneuil Participations SA, is a France-based investment company. The Company acquires shares in companies operating in a number of sectors, including the wood, real estate hotel promotion food processing and the leisure sectors. The Group operates its businesses through Societe Francaise de Casinos and Financier Duc. Through Societe Francaise de Casinos the Company offers a number of services, such as slot machines, games, shows & entertainment and restaurant and private reservation services, among others. The Company reports the leisure sector as its main activity.

Voltalia. Voltalia SA is a France-based holding company engaged in the renewable utilities sector. It designs, develops and operates electric power stations in numerous countries, such as France, French Guyana, Brazil, Greece and Morocco. The Company generates electricity using a variety of renewable energy sources. These include wind, water, biomass and solar power. In addition, Voltalia SA specializes in carbon credit trading activities. The Company operates several subsidiaries, including Anelia and Bio-Bar in France, Voltalia Guyane, SIG Kourou, SIG Mana and SIG Cacao in French Guyana, Voltalia Energia do Brasil in Brazil, Thegero in Greece and Alterrya Maroc in Morocco, among others. The Company is owned by Voltalia Investissement SA.