Simpson Thacher is representing Qualus, a portfolio company of New Mountain Capital, in connection with the announced sale of Qualus to affiliates of Clearlake Capital Group. The acquisition is subject to customary regulatory approvals and is expected to close in Q2 2026. Financial terms of the transaction were not disclosed.
Qualus is a pure-play power solutions firm at the forefront of the nation’s grid infrastructure transformation. The Company provides integrated front-end advisory and planning, engineering, digital solutions, program management, energy efficiency, and specialized field services supporting grid resiliency, security, and sustainability.
Simpson Thacher represented New Mountain Capital in its acquisition of Qualus in 2021.
The Simpson Thacher team includes Matthew Rogers, Elizabeth Cooper, Keegan Lopez, Theresa Scharff, Jonathan Schwartz, Bret Johanneson and Aaron Mashian (M&A); Andrew Blau, Laura Gallo and Matias Botto (Executive Compensation and Employee Benefits); Drew Purcell, Adam Hersch and Jemma Li (Tax); Benjamin Persina (Credit); Ryan Bekkerus and Jess Asrat (Capital Markets); Peter Guryan, Kelly Karapetyan, Nathaniel A. Bronstein and Matt Evola (Antitrust); Caroline Geiger, Dewey J. Kang and Paige Brinton (IP); Krista McManus and Helene Snyder (Real Estate); Jennifer Ho, Ryan Stalnaker and Jill Boggs (CFIUS); George Gerstein (ERISA); and Steven R. Delott (Insurance). Gedaliah Wielgus and Luke Rooney provided invaluable assistance.