Thoma Bravo has announced it will acquire Imprivata for approximately $544 million.

Thoma Bravo, with offices in Chicago and San Francisco, is a PE firm that invests with a particular focus on application and infrastructure software and technology-enabled services.

Imprivata, based in Lexington, Mass., is a healthcare IT security company founded in 2002. The company says its platform addresses critical compliance and security challenges while improving productivity and the patient experience.