Stirling Square Capital Partners, a pan-European mid-market private equity firm, and Deutsche Beteiligungs, a publicly listed mid-market private equity firm, agreed to invest in Itelyum, a provider of hazardous liquid waste services. Financial terms were not disclosed. "Itelyum is a champion of sustainability and a reference for the circular economy in Europe. Stirling Square has the opportunity to continue to participate in Itelyum’s value build-up by capitalising on the Company’s market leadership, strong technical expertise, and a significant acquisition pipeline. We are excited to partner with DBAG for this next phase of international growth and delighted to continue the journey with Marco Codognola and his team," Enrico Biale, Stirling Square Partner.