Aurora Capital Partners, a middle-market private equity firm, completed the acquisition of Curtis Bay Medical Waste Services, a provider of medical waste collection, treatment and disposal services, from Summer Street Capital Partners. Financial terms were not disclosed. "Mark has assembled an impressive team and built Curtis Bay into a real leader in the medical waste management industry. The Company has a strong operational foundation that uniquely positions it to capitalize on a range of attractive growth opportunities as well as a balance sheet designed to support Aurora's Buy and Build strategy. We're excited to be their partner as Curtis Bay leverages its strong market position to pursue organic growth as well as add-on acquisitions," Matt Laycock, Aurora Partner.