OpinionKKR buys from Gryphon, Siris buys from Bertram, and Riverside sells to Blackstone and VistaKKR aims to help the company grow organically and through add-ons.Mary Kathleen Flynn - 27 November 2023 Share A- A+ 100% Create an account to continue reading Gain instant access to our expert editorial analysis and in-depth insight. Register for free Already have an account? Sign in