Sapian is acquiring Aérolia, Servitec and EC Assainissement, which together generate more than €10 million in revenue. The group is owned by Weinberg Capital Partners and generated revenue of around €155 million in 2025. It operates in four businesses: air hygiene, pest control, sanitation and fire protection. The three transactions were concluded outside any competitive process.
Analysis by the experts at Auris Finance, M&A and financial engineering advisory firm.
Beyond the announcement, these three acquisitions show how a consolidator organises its external growth: with financing arranged in advance, transactions concluded without competition, a scope adjusted before signing and precise selection criteria. For SME leaders in the sector, each of these points sheds light on how a sale can be prepared.
Formerly the Hygiene and Prevention division of ISS, Sapian has more than 1,500 employees, 41 branches and more than 48,000 active accounts. Air hygiene, pest control and sanitation each account for nearly 30% of its sales, with fire protection making up the remainder. In 2025, its EBITDA margin exceeded 10%.
An acquisition driven by a funded consolidation strategy
At the end of 2025, Weinberg Capital Partners reinvested in Sapian through its first continuation fund, in which its WCP#4 fund participated alongside management. The transaction raised €115 million and made external growth a priority.
Credit lines dedicated to acquisitions were put in place at that stage. It is these facilities that are now financing the three transactions. The financing was therefore in place before the targets were acquired. Until then, the group had completed only one acquisition since its shareholder came on board: that of the Vallier group.
Outside any process: the relationship comes before the transaction
None of the three transactions went through a competitive process. Aérolia, the largest of the three, had been approached by Sapian for a long time. An off-market sale relies on direct dialogue with a single acquirer, without competition.
The three targets are also very different in size. Aérolia accounts for the majority of the €10 million in revenue acquired, while EC Assainissement generates less than €1 million. The acquisition of the latter, which strengthens Vallier’s positions in the Pays de Gex, shows that a company of this size can find its place in a consolidation strategy.
The scope of the sale, a variable in the negotiation
The acquisition of Aérolia shows how the scope of a sale can be redrawn before signing. The company was founded in Lille in 2010 and also has branches in Normandy and Metz. Its Île-de-France branch, which accounted for nearly €4 million in sales, was carved out before the transaction and remains outside the scope acquired. The founders, Sébastien Pissonnier and François Tailliez, remain operational.
The transaction therefore covered a scope redefined in advance, with the Île-de-France business remaining outside the acquisition, while the founders remain at the helm of the acquired company.
Expertise, territory, density: a consolidator’s criteria
Each target brings a distinct lever to the group.
Aérolia brings expertise. Based in Radinghem-en-Weppes, in the Nord department, it is recognised in air hygiene, industrial cleaning and disinfection. It serves industry, healthcare, agri-food, the office sector and local authorities. Camille Duxin, Associate Director at Weinberg Capital Partners, sums up the objective: “Once you have an area of expertise, the ambition is for it to extend across the whole group and be offered in every branch.”
Servitec brings a territory. Based in South-West France, it operates in air hygiene and fire protection, and is expected to generate commercial and operational synergies with the group’s teams.
EC Assainissement brings density. A specialist in wastewater treatment in the Ain department, it strengthens Vallier’s positions in the Pays de Gex.
A market that calls for consolidation
Sapian’s markets are fragmented, driven by regulation and recurring demand. In France, pest control, insect control and disinfection represent a market estimated at more than €1 billion. In July 2026, these businesses counted 5,664 active companies, four times more than ten years ago, 86% of which have no employees.
Sapian has announced that further acquisitions are under consideration. Its Chairman, Fabien Sfez, states: “With Aérolia, Servitec and EC Assainissement, we are taking a new step and we intend to pursue this development strategy in the years ahead.”
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