PAI Partners and Goldman Sachs' Merchant Banking Division have sold German building materials producer Xella Group to Lone Star.
Deal ends a five-year stint under Foresight ownership, which first invested in 2013
Trevi appointed a chief restructuring officer in 2017 to negotiate a debt restructuring plan
AI business will look to expand beyond marketing and into robotics, healthcare and education
Company's founders and CEO Klaus Schmidt have retained a significant minority stake