An acquisition reinforcing OTEGO’s positioning in the protection of people and machinery worldwide.
- In January 2026, OTEGO, a French company specialized in technical textiles, acquired CALOMATECH, a French manufacturer of custom-made thermal insulation mattresses.
- Founded in 1948, OTEGO later became part of Dickson and subsequently the Glen Raven Group, before being acquired by its management team in 2020, with the support of Geneo Capital, Eximium and BPIfrance. OTEGO specializes in high-performance polymer-coated fabrics and provides advanced coating and lamination solutions to industries requiring resistance to heat and flames, chemicals, abrasion, and non-stick properties. With 100 employees, OTEGO exports to more than 110 countries, combining a strong global footprint with a localized operating approach. The group generates nearly 90% of its revenue internationally, across 6 continents.
- CALOMATECH is an independent company founded in 2017 by Gwenaël BRETON, and specialized in the design, manufacturing, and installation of thermal insulation and heating mattresses. Based in Caen and Marseille, its solutions are delivered to professional customers across a wide range of industrial sectors. With 42 employees, CALOMATECH operates an in-house design department that enables the development of tailor-made solutions for complex applications, helping clients reduce energy consumption, secure installations, and sustainably lower their carbon footprint.
- The transaction will enable CALOMATECH to accelerate its international expansion, particularly by strengthening its export presence across European markets. The complementary expertise of both companies will also support the development of new products, further enhancing and broadening existing protection solutions. OTEGO will benefit from CALOMATECH’s recognized expertise in thermal insulation mattresses, enabling the group to address new markets and applications.
A transaction supported by Altios Corporate Finance
The role of Altios Corporate Finance was to support OTEGO in its external growth strategy in France. The mandate covered several steps, from identifying companies that complement OTEGO in terms of geography and business lines, contacting the relevant targets, carrying out a financial analysis of these targets, and finally assisting the group through the negotiations and due diligence phases up to closing.
The role of Altios Corporate Finance:
- Screening of the French market
- Approach the qualified targets
- Financial analysis and valuation of the target company
- Due diligence coordination
- Support in negotiating LOI, SPA & other transactional documents
Client Testimonial — OTEGO
“With Calomatech, we are moving from a product-based approach to one focused on measurable energy performance, directly at industrial sites. This is a key step in our CAP 2030 plan. Altios’ expertise in acquisitions, combined with the pugnacity of the entire team, led to the success of this acquisition. Calomatech will allow the Otego Group to further strengthen its capabilities in insulation, thermal protection and energy optimization for our customers.”
Thierry Mosa,
CEO OTEGO Group
ALTIOS Corporate Finance Testimonial
“We are pleased to have finalized the first acquisition of OTEGO Group to strengthen its presence in France. The alignment of values with CALOMATECH will enable a smooth integration while maximizing operational synergies and innovation.”
Alexandre KAPLAN
M&A Director and Partner — ALTIOS
Advisors
Buyer’s advisors:
M&A: Altios Corporate Finance – Alexandre Kaplan, Elia Laurent and Elias Remy
Legal: LexCase – Guillaume Pierson, Pénélope Bouchard, Camille Bigan
Due Diligence: Baker Tilly – Frédéric Durand, Pierre Ricard
Seller’s advisors:
Legal: Fidal – Vincent Klinger
Fiscal: Fidal – David Enou
Finance: Incepto Expertise – Noël Le Goff
Contact Press: Alexandre Kaplan, M&A Director, a.kaplan@altios.com
