AMI will continue to be led by its current management team, including President and CEO Dennis Parker.
Management will retain a significant ownership stake in the business.
Financial terms of the transaction were not disclosed.
AMI is headquartered in Sparks, Maryland and has regional offices in China, Taiwan, Mexico, and Australia.
“Golden Gate Capital’s strong financial resources, combined with its deep experience in investing in industrial minerals companies, will enable us to accelerate our growth strategy and bolster our leading market positions in kaolin and gel quality attapulgite clay minerals,” Parker said. “Our success has been built on providing the highest quality products and strong technical support to our customers, and this transaction allows us to extend those efforts.”
“AMI’s market-leading products, access to high-growth end-markets, and commitment to customer service provide an excellent foundation for the business,” added Dave Thomas, a managing director at Golden Gate Capital.