On May 18, 2015, Sterigenics International announced that it had closed a recapitalization with an affiliate of Warburg Pincus and private equity firm GTCR. Terms of the transaction were not disclosed. GTCR purchased Sterigenics in 2011.

Sterigenics is a global leader in outsourced contract sterilization services, gamma technologies and medical isotopes, and the only vertically integrated sterilization company in the world.

The firm was counsel to Sterigenics and GTCR in this transaction with a team that included Paul Harricks, Faran Umar-Khitab and Neeta Sahadev (corporate/M&A); Ian Macdonald (competition); Paul Carenza (tax); Daniel Hayhurst (pensions); Kathleen Ritchie (securities); and Pam Vermeersch and Mark Madras (environmental and nuclear regulation).