Mijdrecht, Netherlands, 19 May 2025 – Caltra Nederland B.V. (‘Caltra’) proudly announces a strategic partnership with Kerakoll S.p.A. (‘Kerakoll’), a B Corp certified Benefit Company operating internationally in the building sector. As part of this agreement, Kerakoll has acquired a 60% stake in Caltra, while the current shareholders retain a 40% stake and continue leading the company’s operations.
Founded in 1984 by Ludo van Nes and under the leadership of his children, Daniëlle M. Hemmink-van Nes and Stephan P. van Nes, since 2013, Caltra specialises in developing, producing, and selling Supplementary Cementitious Materials (SCMs) and Low-Carbon Clinker. The company currently operates three production facilities, with a fourth facility under construction in the Netherlands, anticipated to be operational by Q3 2025.
The primary objective of this partnership, officially formalised on 16 May 2025, is to leverage combined expertise and resources to develop innovative, low-carbon binders. This aligns closely with global industry efforts to reduce the cement sector’s environmental impact – a sector responsible for approximately 7% of total global greenhouse gas emissions. Through the use of alternative materials, additives, and circular economy solutions, Caltra and Kerakoll aim to transform traditional business models and significantly contribute to industry-wide decarbonisation.
Daniëlle M. Hemmink-van Nes and Stephan P. van Nes will maintain their active roles, providing continuity and stability for employees, customers, suppliers, and stakeholders, as they play crucial roles in upcoming projects aimed at pioneering more sustainable solutions in the market. Expressing their optimism about the partnership, they commented:
“We are thrilled to be joining Kerakoll Group, a benchmark player in the sector that, in recent decades, has demonstrated a solid track record in sustainable innovation. We are confident that, together with Kerakoll, Caltra has a bright and prosperous future. We have ambitious development projects in the pipeline and now have the support and resources of a group capable of accelerating their implementation.”
Commenting on the acquisition, Fabio Sghedoni, Vice President of Kerakoll Group, stated:
“The acquisition of a majority shareholding in Caltra marks a further step forward in the innovation and sustainability process embarked on by Kerakoll. The current market trends require creative thinking and a broader vision, with a proactive approach aimed at embracing change: this is exactly how Kerakoll has been operating since its foundation. I am delighted to welcome Daniëlle, Stephan, and everyone at Caltra to Kerakoll Group, because we share the same values, enthusiasm, and commitment to sustainable innovation. I firmly believe that together, we can bring truly revolutionary solutions to our sector.”
Marco Zini, Group CEO of Kerakoll, added:
“With this strategic operation, our Group secures an important international presence in the heart of Europe, gaining essential know-how in critical components for the development of alternative cements, such as SCMs and Low-Carbon Clinkers. Direct access to the best sources of these strategic raw materials will increasingly be a critical success factor for the sustainable future of the building and construction industry.”
Caltra looks forward to further strengthening its position in the industry through this partnership, remaining deeply committed to innovation, sustainability, and responsible business practices.
This announcement is based on a joint press release by Kerakoll S.p.A. and Caltra Nederland B.V., dated 19 May 2025.