4. Berkshire Partners

Company acquired: Masergy

Head count: 201-500 employees

Annual revenue: Not disclosed

Purchase price: Not disclosed

Date of announcement: Oct. 24

Private equity firm Berkshire Partners of Boston acquired a majority stake in managed services provider Masergy Communications.

Under the new ownership, Plano, Texas-based Masergy said it will be able to make more technology-related investments and reach more customers with its next-generation, hybrid networking solutions. ABRY Partners, a private equity firm, bought Masergy in 2011 and still holds a stake in the company.

Masergy offers cloud communications and software-defined networking services to business customers in more than 75 countries. The company currently has about 135 distinct channel partners, including VARs, systems integrators and master agents.