Acorn Growth Cos. LLC bought a majority stake in Aerospares 2000 Ltd.

The U.K.-headquartered company is a full-service aftermarket supplier of rotable parts for commercial aircraft.

Aerospares founder Adam Nemenyi will continue as CEO and keep a significant ownership stake in the company.

Acorn Growth is a middle-market private equity firm with a focus on the aerospace, defense and intelligence sectors.