Callisto advised the management team of Nexteam:
2026: Sale by Tikehau to EMZ, BPI; Amundi and Management (Valuation: > €600m)
References
Since its inception in 2005, Callisto has conducted more than a hundred mandates on behalf of Management teams in transactions of various size, on both primary and secondary Buy-Outs.
Callisto has been exposed to a number of various transaction situations and buyers (french and international investment funds, long term funds, infrastructure funds, industrial buyers etc.).
Callisto is mainly active in France, but also in other European countries.
Hereafter are some references:
All references
Mid cap
Large cap
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Nexteam
Nexteam is a French industrial group specializing in the manufacturing of complex parts for the aerospace, defense and space sectors
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Celeste
Celeste is an independent French telecom operator specializing in internet, connectivity and cloud services for businesses and local authorities
Callisto advised the management team of Celeste:
2026: Sale by Infravia to CVC DIF (Valuation: €600m)
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Efficient IP
Efficient IP is a French company specializing in DNS, DHCP and IPAM (DDI) security and automation solutions for enterprises
Callisto advised the management team of Efficient IP:
2026: Sale by Jolt Capital and Founders to Francisco Partners (Valuation: nd)
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Entoria
Entoria is a French group specializing in the design and distribution of insurance solutions for professionals and businesses
Callisto advised the management team of Entoria:
2026: Sale by Alcentra to HLD Group (Valuation: nd)
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Gutor
Gutor is a Swiss company specializing in the design and manufacturing of secure power supply systems for demanding industrial environments
Callisto advised the management team of Gutor:
2026: Sale by Latour Capital to a continuation fund (Valuation: €420m)
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Belambra
Belambra is a French company specializing in holiday clubs and all-inclusive stays across France
Callisto advised the management team of Belambra:
2026: Sale by Caravelle to Antin Infrastructure (Valuation: ca. €450m)
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Brevo
Brevo is a French company specializing in digital marketing solutions and customer relationship management (CRM)
Callisto advised the management team of Brevo:
2026: Sale by Bridgepoint Developement Capital to Oakley and General Atlantic (Valuation: 500M€)
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Olyos
Olyos is an international pharmaceutical group specializing in natural health and nutrition products
Callisto advised the management team of Olyos:
2025: Sale by Motion Equity Partners to a continuation fund (Valuation: €450m)
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Sebia
Sebia is a French company specializing in in-vitro diagnostics, particularly protein analysis through electrophoresis
Callisto advised the management team of Sebia:
2025: Acquisition by Warburg Pincus of 35% of the capital from CVC, CDPQ, and Téthys
(Valuation: €5.0bn) -
Nemera
Nemera is a French company specializing in the design and manufacturing of drug-delivery devices for the pharmaceutical industry
Callisto advised the management team of Nemera:
2025: Acquisition by LGT Capital Partners of a minority stake from Astorg and Montagu (Valuation: nd)
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Akuo
Akuo Energy is a French company specialized in renewable energy, particularly solar, wind, and biomass
Callisto advised the management team of Akuo:
2025: acquisition by Ardian from Founders and ICG (Valuation: nd)
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ADIT
ADIT is a French firm specializing in strategic intelligence, risk management, and international business support
Callisto advised the management team of ADIT:
2025: Opening of the capital to various institutions (Covéa, UI, Florac, Impala, Isalt, Weinberg, etc.) (Valuation: €800m)
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Egis
Egis is a French engineering and consulting company, specialized in transport infrastructure, urban planning, and ecological transition
Callisto advised the management team of Egis:
2025: Sale by Tikehau to a continuation fund (Valuation: > €2.0bn)
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Serimas
Serimax is a French company specialized in high-performance welding solutions for complex energy sector projects
Callisto advised the management team of Serimax:
2025: acquisition by Aldebaran from Vallourec (Valuation: < €100m)
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Nexpublica
Nexpublica is a French company specializing in digital solutions and consulting services for the public sector
Callisto advised the management team of Nexpublica (ex- Inetum Software):
2025: acquisition by Bain Capital from Inetum (Valuation: €450m)
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Lynxeo
Lynxeo is a French company specializing in software solutions for traceability and management of industrial operations
Callisto advised the management team of Lynxeo:
2025: acquisition by Latour from Nexans (Valuation: €525m)
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Ekoscan
Ekoscan is a French company specializing in ultrasonic inspection solutions for non-destructive testing of materials
Callisto advised the management team of Ekoscan:
2025: acquisition by Eurazeo from Abenex and the Management (Valuation: €250m)
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Ceva
Ceva Santé Animale is a French veterinary laboratory focused on the research, development, and manufacturing of animal health products
Callisto advised the management team of Ceva:
2025: Capital opening to Archimed and Institut Mérieux (Valuation: > €9.0bn)
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Sulo
Sulo is a French company specializing in waste management and collection solutions, combining innovation and sustainability
Callisto advised the management team of Sulo:
2025: acquisition by Latour Capital Fonds IV from Latour Capital Fonds II (Valuation: €620m)
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Albingia
Albingia is a French insurance company specialized in business risks and tailored solutions
Callisto advised the management team of Albingia:
2024: acquisition by Krefeld; Fairfax and the Management from Eurazeo (Valuation: €780m)
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Systra
Systra is a French engineering company recognized for its expertise in rail and urban transport projects
Callisto advised the management team of Systra:
2024: acquisition by Latour from RATP and SNCF (Valuation: €900m)
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Finaxy
Multi-specialist insurance broker offering tailored solutions for businesses and individuals
Callisto advised the management team of Finaxy:
2024: acquisition by Cinven from Ardian (Valuation: €450m)
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Septeo
Leading multi-specialist group in software solutions and IT services dedicated to legal, real estate, and business professionals
Callisto advised the management team of Septeo:
2024: Minority investment of GIC and Tethys and partial sale of Hg (Valuation: €3.2bn)
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Magimix
French company pioneering in the design and manufacturing of high-end multifunctional food processors
Callisto advised the management team of Magimix:
2024: Capital opening to Ardian (Valuation: €1.5bn)